81. Current Advances in the Physiological Roles and Disease-Associated Mechanisms of ADAMTS16.
As an important member of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) family, ADAMTS16 participates in various physiological and pathological processes through the regulation of extracellular matrix (ECM) components. This review systematically delineates the expression profiles of ADAMTS16 in different tissues and cell types, as well as its diverse roles in reproductive development, cardiovascular diseases, ocular diseases, skeletal disorders, malignancies, and other pathological conditions, revealing significant differences in its expression patterns and mechanisms of action across various tissues. Cumulatively, current evidence suggests that ADAMTS16 may engage in direct or indirect interactions with ECM constituents to regulate cell proliferation, differentiation, and migration, and may also influence a range of cellular activities via synergistic cooperation with other cytokines.
82. Molecular Biomarkers of Radiosensitivity and Radioresistance in Cervical Cancer: A Systematic Review.
作者: Anamaria Hermina Girbovan.;Cristina Balan.;Alexandra Timea Kirsch-Mangu.;Eva Fischer-Fodor.;Patriciu Achimas-Cadariu.
来源: Int J Mol Sci. 2026年27卷15期
The primary aim of this review is to summarize current evidence from clinical and pre-clinical studies on endogenous molecular biomarkers associated with radiosensitivity and radioresistance in cervical cancer, including patients treated with photon-based radiotherapy, cervical cancer cell lines, and xenograft models, and to evaluate the association of these biomarkers with radiotherapy response, residual disease, recurrence and survival, and experimental measures of radiosensitivity. A systematic literature review was conducted for studies published over the last 10 years that evaluated associations between genomic, epigenetic, or protein biomarkers and radiotherapy response or survival outcomes in cervical cancer. Eligible studies included in the current analysis summarize clinical, translational, and pre-clinical studies in correlation with photon-based radiotherapy. Research focusing exclusively on non-coding RNAs, exogenous radiosensitizers, or non-photon modalities was excluded. In total, 112 studies were identified, and 46 of them met the inclusion criteria. The identified biomarkers clustered into several key biological processes: DNA damage response and cell cycle regulation, cancer stemness, hypoxia and microenvironment, epigenetic and transcriptional regulation, and signaling pathways, including exosome-mediated communication. Most markers were linked to radioresistance and adverse outcomes, whereas a smaller subset was associated with increased radiosensitivity. A limited group of biomarkers was linked to clinical outcomes such as local control, residual disease, or survival, and emerging multi-marker protein signatures suggested that combinatorial approaches may outperform single-marker strategies. Radiosensitivity in cervical cancer is regulated by a network of biological pathways. Validated, integrated biomarker panels that capture DNA repair proficiency, stemness, hypoxia adaptation, and key signaling pathways are needed to improve risk stratification and enable biomarker-guided radiosensitization.
83. Co-Mutation of CREBBP/EP300 and POLE/POLD1 Identifies a TMB-High Subset of MSS CRC.
作者: Mariia Gusakova.;Fedor Sharko.;Eugenia Boulygina.;Ksenia Maksimova.;Maxim Patrushev.
来源: Int J Mol Sci. 2026年27卷15期
Identifying immunotherapy biomarkers for colorectal cancer (CRC) beyond MSI-high status is challenging. We evaluated CREBBP/EP300 and POLE/POLD1 mutations as candidate markers using public cohorts (MSK-CHORD, n = 5493; TCGA, n = 528; MetTropism, n = 24,496; ICI-treated, n = 1610). Regression with SHAP attribution, survival analyses, and pan-cancer transcriptomic profiling (n = 7628) were performed. CREBBP/EP300 mutations were independently associated with TMB-high MSS tumors (p < 0.00001). The co-mutation group (CREBBP/EP300 + POLE/POLD1; CoMut) was the strongest predictor of elevated TMB level (β = 3.63; p < 10-16; exp(β) = 37.7) with a median TMB of 155.9 vs. 7.4 and 5.4 Mut/Mb in single-mutation groups. CoMut also associated with improved survival (HR = 0.57, p = 0.035). In the ICI-treated cohort, both single-mutation groups (CREBBP/EP300-MUT-only; POLE/POLD1-MUT-only) and showed longer overall survival than wild type (34 and 28 vs. 17 months; p < 0.05), but only CREBBP/EP300 mutations independently reduced mortality risk (HR = 0.71, p = 0.0025). All groups shared immune-inflammatory transcriptomic enrichment. These findings support CREBBP/EP300 mutations as candidate immunotherapy biomarkers, and co-mutations with POLE/POLD1 define a TMB-high MSS subgroup that could refine TMB testing, pending prospective validation.
84. Evaluation of HER2 and Nectin-4 Expression in Primary Vaginal Cancers.
作者: Gilbert Georg Klamminger.;Hanna Wattendorff.;Felix Hässlin.;Christoph Eckert.;Silke Mitschke.;Stefanie Zimmer.;Meletios P Nigdelis.;Roxana Schwab.;Walburgis Brenner.;Annette Hasenburg.;Yaman Degirmenci.
来源: Int J Mol Sci. 2026年27卷15期
This study assessed the prevalence and clinical relevance of p16INK4a, p53, HER2, and Nectin-4 protein expression in primary vaginal cancer (PVC), with HER2 and Nectin-4 representing potentially druggable targets. A total of 34 patients with PVC from the University Medical Center Mainz biobank were included. Immunohistochemistry was used to evaluate the expression of p16, p53, HER2, and Nectin-4: p16, p53, and HER2 staining results were dichotomized (positive vs. negative; mutant vs. wildtype staining pattern), whereas Nectin-4 expression was assessed using an immunoreactive score (IRS) based on staining intensity and the proportion of positive tumor cells. Univariate analyses were performed to identify intergroup differences, and survival analyses were conducted using the log-rank test. Negative p16 expression was significantly associated with adenocarcinomatous histology (p = 0.0211), but neither p16 nor p53 status showed prognostic relevance. HER2 positivity was detected in 14.7% of tumors and was significantly associated with adenocarcinoma (p = 0.0001), p16 negativity (p = 0.0035), and younger age (p = 0.0483). Based on IRS, strong total Nectin-4 expression was observed in 20.59% and moderate membranous Nectin-4 expression in 17.65% of cases. No significant associations were found between HER2 or Nectin-4 expression and clinical outcomes; however, a limited statistical power of the survival analysis due to the low number of events (n = 10 deaths) should be considered. This analysis demonstrates a notable prevalence of HER2 and Nectin-4 expression in PVC.
85. The Pharmacogenomics of Opioid Response in Cancer Pain: From Receptor Polymorphisms to Tumour-Mediated Interference-A Narrative-Critical Review.
Cancer pain affects more than half of all oncology patients and represents one of the most challenging therapeutic problems in modern medicine. Despite the central role of opioids in cancer pain management-codified by the WHO analgesic ladder-the clinical response to these agents is highly variable between individuals. Pharmacogenomics promises to explain this heterogeneity by identifying functionally relevant genetic polymorphisms in genes encoding opioid receptors, metabolizing enzymes, and membrane transport proteins. However, after two decades of intensive research, clinical translation of genetic data into actionable prescribing strategies remains elusive. A narrative-critical review of the literature was conducted by searching PubMed, Scopus, and Web of Science databases from inception to March 2026, using the search terms "opioid," "pharmacogenomics," "pharmacogenetics," "cancer pain," "polymorphism," and individual gene names (OPRM1, CYP2D6, COMT, ABCB1, SLC22A1, UGT2B7, and others). Reference lists of included articles were hand-searched for additional relevant studies. Inclusion was restricted to English-language articles reporting original data or systematic reviews on genetic polymorphisms and opioid response, with priority given to studies conducted in cancer pain populations. Clinical practice guidelines from CPIC, NCCN, ESMO, EAPC, and ASCO were consulted for current recommendations. This narrative-critical review examines the evidence on genetic polymorphisms relevant to opioid response in cancer pain, covering three functional categories: (1) pharmacodynamic genes, including opioid receptors (OPRM1, OPRD1, OPRK1) and neuromodulatory targets (COMT, KCNJ6, MC1R); (2) pharmacokinetic enzymes (CYP2D6, CYP3A4/5, UGT2B7); and (3) membrane transporters, including ABC efflux pumps (ABCB1, ABCG2, ABCC2) and SLC uptake carriers (SLC22A1, SLCO1B1, SLC6A4, SLC6A2). A dedicated section addresses the direct and indirect interference of the tumour itself-through the tumour microenvironment, neuroimmune signalling, epigenetic reprogramming, and cancer-induced organ dysfunction-on opioid pharmacogenomics. The overall evidence is poor and fragmented, a finding intrinsic to the extraordinary diversity, large number, and context-dependent biological activity of the polymorphisms identified. The tumour itself acts as a pervasive confounder that systematically distorts genotype-phenotype relationships. The path forward requires a paradigm shift from candidate-gene association studies to system pharmacogenomics and multi-omic integration.
86. Homer3 Promotes Aggressive Phenotypes in Triple-Negative Breast Cancer Through Cell Cycle- and MYC-Associated Programs.
作者: Kuei-Yen Tsai.;Yu-Jia Chang.;Jang-Chun Lin.;G M Shazzad Hossain Prince.;Uyanga Batzorig.;Ai-Wei Lee.;Chin-Sheng Hung.
来源: Int J Mol Sci. 2026年27卷15期
Homer proteins (Homer1-3) are scaffold proteins that mediate protein-protein interactions in signal transduction; however, the role of Homer3 in breast cancer (BC), particularly triple-negative breast cancer (TNBC), remains poorly defined. Here, we investigated the clinical relevance and functional significance of Homer3 in BC and TNBC. Publicly available datasets from TCGA and GEO were analyzed to evaluate associations between Homer3 expression and patient outcomes using Kaplan-Meier survival analysis. Pathway enrichment analysis and gene set variation analysis (GSVA) were performed to identify signaling programs associated with Homer3 co-expressed genes. Functional roles were examined using stable TNBC cell lines with Homer3 knockdown or overexpression, followed by assays for cell proliferation, clonogenic growth, migration, invasion, and wound healing. We found that Homer3 expression was elevated in breast tumors compared with normal tissues and was associated with poor prognosis in both BC and TNBC. Homer3 expression was higher in TNBC than in non-TNBC subtypes and negatively correlated with estrogen receptor (ER) and progesterone receptor (PR) expression. Functionally, Homer3 depletion suppressed TNBC cell proliferation, clonogenic capacity, migration, invasion, and wound healing, whereas Homer3 overexpression produced reciprocal effects. Pathway analyses revealed that Homer3 co-expressed genes were enriched in cell cycle-related pathways and Hallmark MYC signaling, which were associated with adverse clinical outcomes. Consistently, Homer3 knockdown selectively reduced key proliferative cell-cycle regulators. Collectively, these findings demonstrate that Homer3 is associated with aggressive phenotypes and MYC- and cell cycle-linked proliferative programs in breast cancer, particularly in TNBC. Survival analyses are presented as exploratory findings, supporting the biological relevance of Homer3 in TNBC. These findings suggest that Homer3 may represent a potential therapeutic vulnerability.
87. ELAVL1-KO Affects Steroid Synthesis in ACC Cell Line NCI-H295R and Reduces Colony-Forming Abilities.
作者: Max Brandau.;Vanessa Kirsch.;Dmitry Chernyakov.;Laura-Sophie Landwehr.;Silviu Sbiera.;Bayram Edemir.
来源: Int J Mol Sci. 2026年27卷15期
Adrenocortical carcinoma (ACC) is a rare malignancy of the adrenal gland for which no curative treatment options exist in advanced stages. Analyzing the ACC cohort of The Cancer Genome Atlas, we identified that expression of the mRNA-stabilizing protein Embryonic-Lethal-Abnormal-Vision-Like RNA-Binding Protein 1 (ELAVL1) was negatively associated with patient survival. To investigate the functional role in ACC, we generated a CRISPR/Cas9-mediated ELAVL1 knockout (KO) in the ACC cell lines NCI-H295R and HAC15 and performed Next-Generation RNA Sequencing (NGS) to characterize transcriptomic changes. In NCI-H295R, NGS analysis revealed 3468 upregulated genes and 3458 downregulated genes in ELAVL1-deficient cells compared with controls. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis identified significant enrichment of aldosterone biosynthesis-related genes and enriched downregulation of genes associated in with "pathways in cancer." Functionally, ELAVL1-KO cells exhibited impaired colony-forming ability, indicating reduced proliferative or clonogenic potential. Steroid profiling of cell culture supernatants further demonstrated increased aldosterone synthesis and decreased cortisol and androgen production in the KO cells, consistent with the observed transcriptional changes. Given that hypercortisolism is an established negative prognostic factor in ACC, these data suggest that ELAVL1 may represent a potential therapeutic target worth further investigation for modulating steroidogenesis in ACC patients.
88. Targeting IGF2BP3 in Cancer: From Molecular Structure and Biology to Early Drug Discovery.
作者: Elisa Uliassi.;Maria Laura Bolognesi.;Katia Scotlandi.;Caterina Mancarella.
来源: Int J Mol Sci. 2026年27卷15期
RNA-binding proteins (RBPs) remain underexplored as small-molecule targets, although their dysregulation contributes to numerous human diseases, including cancer. RBPs are key regulators of post-transcriptional gene expression, controlling multiple stages of RNA metabolism. Among them, insulin-like growth factor 2 mRNA-binding protein 3 (IGF2BP3) is an oncofetal RBP that is highly expressed during embryonic development, largely absent in adult tissues, and re-expressed in multiple malignancies. A growing body of evidence supports IGF2BP3 as a diagnostic and prognostic biomarker and a potent oncogenic driver across tumor types, underscoring its potential as a therapeutic target. However, the development of effective IGF2BP3-targeting compounds remains in its early stages. In this review, we first describe the structural organization of IGF2BP3, the molecular basis of RNA recognition, and the mechanisms underlying its dysregulation across human cancers. We then discuss emerging therapeutic approaches, including direct inhibition of IGF2BP3-RNA interactions and indirect strategies that rewire IGF2BP3 expression or activity through epigenetic, epitranscriptomic, and signaling pathways. By critically highlighting the opportunities and limitations of these approaches and their impact on cancer progression, we provide an integrated perspective combining structural biology, medicinal chemistry, and cancer biology to support the development of next-generation IGF2BP3-targeted therapies.
89. Tumor-Induced PDPN+ Lymphatic-like Endothelial Cells Promote Clear-Cell Renal Cell Carcinoma Progression Through Reciprocal BMP10-CXCL13 Signaling.
作者: Tuong-Vi Nguyen.;Hieu-Huy Nguyen-Tran.;Thi-Ngoc Nguyen.;Tien Hsu.
来源: Int J Mol Sci. 2026年27卷15期
Here, we report the identification of a previously unrecognized population of tumor-induced podoplanin-positive (PDPN+) cells in clear-cell renal cell carcinoma (ccRCC) that exhibit features of under-differentiated lymphatic endothelial cells (LECs). These PDPN+ cells lack a complete repertoire of canonical LEC markers, including VE-cadherin, LYVE1, and VEGFR3, and fail to form functional lymphatic vessels, indicating a dysplastic phenotype. We termed these cells dysLECs and found that these cells are induced by BMP10 produced specifically by tumor cells. In turn, dysLECs secrete CXCL13, which promotes tumor cell proliferation and metastasis. Ligand-receptor analyses revealed a highly tumor-specific reciprocal signaling circuit: kidney tubule cells deficient in the von Hippel-Lindau (VHL) tumor suppressor gene uniquely express BMP10, a TGF-β family cytokine, whereas its receptor ALK1 is restricted to dysLECs; conversely, dysLECs produce CXCL13, while VHL mutant kidney tubule cells uniquely express its receptor, CXCR5. Pharmacological inhibition of ALK1 reduced CXCL13 production and suppressed the hyperplastic phenotype of VHL mutant tumor cells in vivo, whereas BMP10 neutralization inhibited tumor growth and metastasis in an orthotopic ccRCC xenograft model. Collectively, these findings identify a dysplastic population of PDPN+ lymphatic-like endothelial cells and define a tumor-specific BMP10-CXCL13 signaling axis that drives ccRCC progression, uncovering a previously unrecognized therapeutic vulnerability in this disease.
90. A Generalizable and Interpretable Framework for Molecular Subtype Classification of Pancreatic Ductal Adenocarcinoma Integrating Conformal Uncertainty Quantification and Consensus-Based Explainable Artificial Intelligence Across Multiple Cohorts.
作者: Seyma Yasar.;Fatma Hilal Yagin.;Sarah A Alzakari.;Amal K Alkhalifa.;Fahaid Al-Hashem.;Abedelmalek Kalefh Tabnjh.
来源: Int J Mol Sci. 2026年27卷15期
Pancreatic ductal adenocarcinoma (PDAC) has two principal molecular subtypes-classical and basal-like-with divergent prognosis and chemotherapy response, yet transcriptomic classifiers rarely generalize across cohorts or quantify per-patient uncertainty. We trained a classical-versus-basal-like classifier on CPTAC-PDAC (n = 140) and externally validated it on histology-filtered TCGA-PAAD (n = 150). Twelve algorithms were benchmarked under stratified nested cross-validation with four-method consensus feature selection; domain adaptation (naive transfer, CORAL, and ComBat), four conformal procedures (split, weighted, CV+, and Conformal Risk Control), and a four-method consensus explainable-AI framework (SHAP, LIME, permutation importance, and decision-curve ablation) with pathway enrichment were then evaluated. Top models reached a cross-validated AUROC ≈ 0.96 and external AUROC 0.913-0.938 (top-3 ensemble 0.961); batch correction did not improve transfer, indicating minimal residual batch effect. Consensus explainability recovered keratinization biology and nominated five candidate genes (GSDMC, A2ML1, PIP5K1B, IL20RB, and AKR7L) beyond the Moffitt signature. All four conformal procedures plateaued near 0.85 coverage at α = 0.05 under zero-shot transfer, whereas local recalibration on a small target sample restored nominal coverage. We present a transparent, externally validated, uncertainty-aware and TRIPOD+AI-compliant PDAC subtype classifier, best deployed as a calibrated decision-support tool with site-specific recalibration.
91. Endobronchial Intratumoral Immuno- and Gene Therapies in Lung Cancer: Mechanisms of Local Delivery, Systemic Immune Effects, and Global Feasibility.
作者: Mihai Olteanu.;Gabriela Marina Andrei.;Ramona Cioboată.;Virginia Maria Rădulescu.
来源: Int J Mol Sci. 2026年27卷15期
Lung cancer remains the leading cause of cancer-related mortality worldwide, and durable benefit from immune checkpoint inhibitors is limited by immune exclusion, microenvironmental immunosuppression, and toxicity. This narrative translational review evaluates whether endobronchial intratumoral delivery of immuno- and gene-based therapies can transform bronchoscopic access into a therapeutic platform linking local tumour intervention with systemic antitumour immunity. We synthesise evidence on endobronchial ultrasound, electromagnetic navigation bronchoscopy, and robotic-assisted bronchoscopy, together with local checkpoint blockade, cytokine and mRNA-lipid nanoparticle constructs, oncolytic virotherapy, dendritic-cell approaches, viral and non-viral gene transfer, and enzyme- or metabolite-based strategies. Current clinical evidence remains preliminary, consisting mainly of Phase I trials, small prospective cohorts, and case-based signals, with feasibility and safety observations but no completed randomised trial demonstrating efficacy against standard-of-care systemic therapy. The most plausible candidates are patients with advanced or recurrent NSCLC, bronchoscopically accessible lesions, inadequate response to systemic immunotherapy, and immune-excluded or locally immunosuppressed tumours. Biomarkers such as PD-L1, tumour mutational burden, CD8+ infiltration, tertiary lymphoid structures, radiomics, and circulating tumour DNA require validation. This review integrates delivery technology, immune mechanisms, statistical evidence appraisal, biomarker limitations, AI-guided planning, and global feasibility.
92. COPS7B Drives Malignant Progression of Glioblastoma Through Translational Upregulation of the Downstream Functional Effector CLU.
作者: Jiarui Li.;Meiling Zhang.;Fan Xu.;Xi Liu.;Yunting Le.;Zhaozhan Fan.;Chen Chen.;Liyuan Guo.;Shuoshuo Wang.
来源: Int J Mol Sci. 2026年27卷15期
Glioblastoma (GBM) is a highly aggressive primary malignant brain tumor, featuring diffuse infiltrative growth and poor clinical outcomes, which underscores the need to delineate the molecular mechanisms driving its malignant progression. COP9 signalosome subunit 7B (COPS7B), a core component of the conserved COP9 signalosome complex, is significantly upregulated in GBM tissues; however, its biological function and regulatory mechanism in GBM remain largely elusive. Here, we found that elevated COPS7B expression was positively correlated with glioma pathological grade and adverse prognosis in histologically and molecularly confirmed GBM patients. Functional assays demonstrated that COPS7B markedly promoted the proliferation, migration, and invasion of GBM cells in vitro, while COPS7B knockdown exerted the opposite suppressive effects. Mechanistically, we identified clusterin (CLU) as a key downstream functional effector of COPS7B in GBM. COPS7B upregulated CLU protein abundance by enhancing the translation efficiency of CLU mRNA, without altering its transcriptional level or protein stability. Functional rescue experiments further confirmed that CLU is indispensable for COPS7B-mediated malignancy-driving phenotypes in GBM, and transcriptomic analysis revealed that the progression-promoting effect of CLU was tightly associated with the activation of tumor-related signaling cascades, including the ERK and MAPK pathways, as well as the regulation of cell growth, invasion, and migration. Collectively, this study not only reveals a critical role of COPS7B in driving GBM malignant progression but also delineates a novel COPS7B-CLU regulatory axis that drives GBM aggressive phenotypes via activation of mitogenic signaling, suggesting candidate targets for further translational investigation.
93. Artificial Intelligence for Molecular Biomarker Identification in Gastrointestinal and Hepatobiliary Cancers.
Artificial intelligence (AI) has emerged as a promising tool for inferring molecular biomarkers directly from digitized histopathologic slides. However, the current evidence in gastrointestinal and hepatobiliary cancers remains fragmented across tumor types and biomarker categories. Relevant studies were systematically identified and screened according to the PRISMA 2020 statement. PubMed, Embase, Web of Science Core Collection, Scopus, and IEEE Xplore were searched from 1 January 2015 to the date of search. Eligible studies involved gastrointestinal or hepatobiliary malignancies, used histopathology images, applied AI-based methods, and reported molecular biomarker prediction or inference. A total of 110 studies were included. Most studies focused on colorectal, gastric, liver, and pancreatic cancers, with microsatellite instability, mutation status, molecular subtypes, and tumor mutational burden being the most commonly investigated targets. Model architectures evolved from conventional convolutional neural networks to multiple-instance learning and transformer-based methods. While many studies reported promising predictive performance, direct comparison across studies remained challenging because of substantial heterogeneity in datasets, model architectures, and validation strategies. AI-based molecular biomarker identification from pathologic slides shows substantial promise in gastrointestinal and hepatobiliary cancers, but current evidence is constrained by heterogeneity and limited validation. Standardized, multicenter studies are needed before routine clinical implementation.
94. Advances in Aptamer Diagnostics Targeting Non-Small-Cell Lung Cancer: A Systematic Review.
作者: Lisa Agnello.;Ilaria Leone.;Alessandra Affinito.;Carla Lucia Esposito.;Silvia Catuogno.;Anna D'Agostino.;Marco Salvatore.;Gerolama Condorelli.;Silvia Nuzzo.
来源: Int J Mol Sci. 2026年27卷15期
Non-small-cell lung cancer (NSCLC) is one of the most frequent cancer types and is responsible for the majority of cancer-related deaths worldwide. For this reason, initial diagnosis, prognosis, and targeted therapy of NSCLC represent very attractive areas of study. Aptamers are single-stranded nucleic acids (RNA or DNA) generated through Systematic Evolution of Ligands by Exponential Enrichment (SELEX); they are able to bind to a molecular target with high affinity and specificity. Thanks to their intrinsic nucleic acid properties, they can be easily modified and optimized to enhance target binding and their half-life; moreover, they exhibit no immunogenicity and toxicity. Due to this, many aptamers have just been selected against NSCLC biomarkers and provide specific imaging agents to improve the diagnosis of this type of cancer. However, despite the promising results in preclinical studies, the application of aptamers in NSCLC diagnosis is still in its early stages, mainly due to the limited literature in the research world, the dominance of antibodies in the pharmaceutical market and the challenge of target identification. Consequently, this appears to be a temporary issue, and aptamers could see increasing application in the future; thus, we performed a review aimed at summarizing current knowledge on the new promising DNA and RNA aptamer-based molecules for NSCLC diagnosis. All studies from 2000 were included and investigated. Our findings showed that several DNA and RNA aptamers are promising diagnostic tools for NSCLC management.
95. Myofibroblastic CAF and Malignant Ductal Cell Crosstalk Drives Epithelial-Mesenchymal Transition and Progression in Pancreatic Ductal Adenocarcinoma via THBS2-SDC/Integrin Axes.
作者: Zhonglu Ren.;Zhuangchang Li.;Jie Wang.;Yuchen Liu.;Lidan Chen.;Yuxin Su.;Limin Zhao.;Xi Liu.
来源: Int J Mol Sci. 2026年27卷15期
Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal malignancy with a five-year survival rate below 10%. Cancer-associated fibroblasts (CAFs) promote epithelial-mesenchymal transition (EMT) and metastasis, yet the specific CAF subtypes and molecular axes driving PDAC progression remain incompletely understood. Here, using multi-omics data from PDAC samples, we identified a malignant ductal subpopulation, termed Ductal-T0, characterized by the highest EMT activity and prominent acquisition of myofibroblastic CAF (myCAF)-like transcriptional programs. Computationally, we predicted that myCAF-secreted THBS2 and FN1 engage the ITGA3/ITGB1/SDC1/SDC4 receptor axes in Ductal-T0 cells, which could activate TNF, NF-κB, TGF-β, and PI3K-AKT-signaling pathways to promote EMT. Pseudotime trajectory and velocity analyses suggested that Ductal-T0 cells exhibited the highest propensity to acquire myCAF-like features among all ductal subpopulations. Survival analysis revealed that an increased proportion of Ductal-T0 cells and elevated abundance of THBS2-ITGA3/ITGB1 and THBS2-SDC1 ligand-receptor pairs were significantly associated with poor prognosis. Spatial transcriptomics further revealed that myCAFs and Ductal-T0 cells co-localized at the tumor margin, which may contribute to reduced immune cell presence via dense extracellular matrix (ECM) barrier formation-a computationally inferred model of EMT-associated immune exclusion and metastatic progression-and identify THBS2 as a promising candidate for future therapeutic investigation to disrupt CAF-tumor crosstalk in PDAC.
96. Curcumin and Cancer Stem Cells: Epigenetic Mechanisms Underlying Therapeutic Resistance and Tumor Relapse.
Cancer stem cells (CSCs) drive therapeutic resistance, metastasis, and tumor recurrence through reversible transitions among stem-like, differentiated, epithelial, and mesenchymal states, which are sustained by interconnected epigenetic mechanisms. To our knowledge, this is the first review to integrate curcumin-mediated regulation of DNA methylation, chromatin remodeling, and non-coding RNAs within a single CSC plasticity framework and to propose the concept of an "epigenetic collapse of CSC plasticity" as a mechanistic explanation for how curcumin may weaken stemness, state switching, and adaptive treatment resistance. Evidence was critically evaluated through structured searches of PubMed/MEDLINE, Scopus, Web of Science Core Collection, Google Scholar, and citation tracking, while direct curcumin-epigenetic evidence was distinguished from independent CSC evidence and inferential mechanistic links. Curcumin has been reported to modulate DNMT1 and locus-specific DNA methylation; regulate HDACs, p300/CBP, EZH2, H3K27me3, and BMI1; and alter selected microRNA, long non-coding RNA, and circular RNA pathways, with comparatively stronger evidence involving the miR-34 family, miR-200c, miR-21, H19, and circHN1. However, current evidence is constrained by the predominance of bulk cancer-cell models, heterogeneous formulations and exposure conditions, and the scarcity of epigenetic rescue experiments combined with rigorous functional CSC assays. By unifying previously fragmented epigenetic evidence, this review advances a new evidence-weighted model in which curcumin may suppress CSC persistence not through a single molecular target, but by destabilizing the multilayer epigenetic circuitry that enables plasticity. Curcumin should therefore be regarded as a context-dependent, multilayer epigenetic modulator rather than an established CSC-eradicating therapy, and its translational relevance requires validation in prospectively defined CSC models with pharmacologically justified delivery and exposure conditions.
97. Transfer RNA Modifications in the Immune System Participate in Disease Pathogenesis.
作者: Xinke Ma.;Hejia Gu.;Yi Zhang.;Hanru Jia.;Peiying Li.;Yingjia Wang.;Jiahui Wu.;Aiwei Wu.;Jing Wu.
来源: Int J Mol Sci. 2026年27卷15期
The human immune system executes immune defense against foreign antigens, immune surveillance against mutant cells, and immune homeostasis to maintain bodily physiological equilibrium. Transfer RNA (tRNA) is an important part of gene expression regulation. Recent studies have found that aberrant tRNA modifications can disturb the function of the immune system by altering translation efficiency, including regulating immune recognition and signal transduction, as well as influencing apoptosis and autophagy. tRNA modifications are also closely related to the development and occurrence of immune-related disorders such as infections, tumors, and autoimmune diseases. By integrating current research on immune-related tRNA modifications, this review systematically summarizes the mechanisms of tRNA modifications involved in three major immune functions and their relationship with related diseases, encompassing the direct regulation of immune cells and the indirect immune effects mediated through tissue or tumor cells. In addition, some tRNA modifications can also modulate immune responses by affecting tRNA cleavage and the consequent generation of tRNA-derived small RNAs (tsRNAs). Accordingly, this review outlines promising intervention targets and unresolved research bottlenecks, facilitating follow-up investigations into tRNA modification-dependent immune regulation and translational therapeutic research.
98. Inhibition of the AT-Hook DNA-Binding Domain Attenuates HMGA2-Mediated Epithelial Mesenchyme Transition in Esophageal Cancer Cells.
作者: Lucas de Jesus Lima.;Matheus Lohan-Codeço.;Maria Luísa Barambo Wagner.;Isabella Paiva Ramos de Oliveira.;Arthur Renato Macedo Adade.;Luiz Marcelo Ribeiro Tomé.;Nathalia Meireles Da Costa.;Luís Felipe Ribeiro Pinto.;Luiz Eurico Nasciutti.;Mariana Severo Ramundo.;Antonio Palumbo.
来源: Int J Mol Sci. 2026年27卷15期
Esophageal squamous cell carcinoma (ESCC) is a highly prevalent malignancy worldwide. Moreover, ESCC remains poorly characterized at the molecular level, which contributes to limited therapeutic options and an overall poor prognosis. In this context, HMGA family members, which are overexpressed in tumors but almost absent in healthy adult tissues, seem to represent promising therapeutic targets. These proteins act by binding to AT-hook DNA-binding motifs and may regulate the expression of several genes associated with tumor progression. Therefore, integrating in silico, translational, and in vitro approaches, we investigated the functional consequences of blocking HMGA2-DNA interaction in ESCC tumor progression by using netropsin, a site-specific ligand for AT-rich DNA regions. Our results demonstrate that netropsin treatment significantly reduced cell viability, migration, and cell cycle progression, thereby promoting apoptosis. Furthermore, netropsin treatment was capable of partially reverting Epithelial-Mesenchymal Transition (EMT) activation associated with HMGA2 expression, by downregulating EMT activators, such as Slug and Twist. Finally, the netropsin treatment sensitizes ESCC cells to chemotherapeutic treatment with 5-Fluorouracil. Taken together, our findings highlight that AT binding-specific blockade could be correlated with the inhibition of HMGA2 and may reveal a promising approach to better understand ESCC progression.
99. Droplet Digital PCR Assessment of MDM2 Amplification in Liposarcoma Diagnosis and Prognosis: A French Single-Center Cohort Study.
作者: Amira Amri.;Aurélie Haffner.;Fréderic Fina.;Romain Appay.;Florence Duffaud.;Sébastien Salas.;Jean-Camille Mattéi.;Alexandre Rochwerger.;Christophe Chagnaud.;Rémi Fernandez.;André Maues de Paula.;Pierre-Alexandre Just.;Ilyes Hamouda.;Shani Diai.;Chelsea Anjuly Neda.;Patrice Roll.;Elise Kaspi.;Catherine Gallardo.;Anne Barlier.;Corinne Bouvier.;Diane Frankel.;Nicolas Macagno.
来源: Int J Mol Sci. 2026年27卷15期
Amplification of MDM2 is the molecular hallmark of atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDL) and dedifferentiated liposarcoma (DDL). While fluorescence in situ hybridization (FISH) is widely used for diagnosis, the diagnostic and prognostic value of droplet digital PCR (ddPCR) remains poorly defined. We retrospectively analyzed 341 primary adipocytic tumors, including 85 liposarcomas (22 DDL), using ddPCR to quantify MDM2 copy number variation (CNV). Diagnostic performance was compared with FISH, and associations with clinicopathological variables and outcomes were evaluated using non-parametric tests, ROC analysis, survival analysis, and Firth's penalized Cox models. Comparison with FISH confirmed the diagnostic utility of ddPCR for detecting MDM2 amplification, while quantitative CNV assessment provided additional prognostic information. CNV values were significantly higher in deep-seated and dedifferentiated tumors and were strongly associated with local recurrence. ROC analysis identified a threshold of 16.85 copies predicting both dedifferentiation and recurrence (AUC 0.982 and 0.942, respectively). Patients with CNV ≥ 16.85 copies had significantly shorter recurrence-free and overall survival. In multivariable analysis, high CNV remained an independent predictor of recurrence (HR 36.6, 95% CI 4.0-4914.2). These findings support ddPCR as a robust method for MDM2 assessment and suggest that quantitative MDM2 copy number may improve both diagnosis and risk stratification in liposarcoma.
100. Next-Generation Sequencing in Colorectal Cancer: Real-World Molecular Profiling and Clinical Correlations.
作者: Afonso Cunha.;Carolina Robalo.;Carolina Lemos.;Nuno Jorge Lamas.;Marisa Domingues Dos Santos.
来源: Int J Mol Sci. 2026年27卷15期
Next-generation sequencing (NGS) has become a cornerstone of precision oncology in colorectal cancer (CRC), although its role in routine patient stratification remains incompletely defined. This retrospective single-centre study characterised the molecular landscape of clinically selected CRC patients undergoing routine NGS and explored associations between genomic alterations and clinicopathological features. 97 eligible patients who underwent targeted NGS using two validated sequencing platforms were selected. Demographic, clinicopathological, and molecular data were integrated, and associations were evaluated using descriptive statistics, exploratory association testing, principal component analysis, and multiple correspondence analysis. At least one reportable genetic alteration was identified in 91 patients (93.8%), comprising 198 alteration events across multiple cancer-related genes. The most frequently altered genes with pathogenic or likely pathogenic variants were TP53 (55.7%), KRAS (40.2%), PIK3CA (18.6%), and BRAF (11.5%), while microsatellite instability was detected in 19.1% of evaluable tumours. Exploratory analyses identified associations between selected molecular alterations and clinicopathological characteristics. However, these were generally modest, frequently limited by small subgroup sizes, and none survived Benjamini-Hochberg correction. Principal component analysis demonstrated substantial molecular heterogeneity without defining distinct clinicopathological subgroups. Routine targeted NGS provides detailed molecular characterisation of CRC and generates information relevant to biomarker-informed clinical decision-making in real-world practice. However, targeted panels alone were insufficient to establish robust molecular subgroups in this retrospective cohort. These findings highlight the biological complexity of CRC and support larger prospective studies incorporating broader molecular profiling to improve precision patient stratification and optimise personalised therapeutic strategies.
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