241. Kidney function changes associated with trastuzumab use in women with breast cancer: a retrospective cohort study.
作者: Amber O Molnar.;Eric McArthur.;Sarah E Bota.;Kathryn Stirling.;Jaffa Romain.;Darryl P Leong.;Som D Mukherjee.;Abhijat Kitchlu.;Michael Walsh.
来源: Breast Cancer Res Treat. 2026年217卷1期
Higher concentrations of human epidermal growth receptor 2 (HER2) may cause chronic kidney disease. We sought to determine if trastuzumab (a HER2 inhibitor) may be kidney protective.
242. Pre-treatment audiological and vestibular assessment in adults starting platinum-based chemotherapy.
作者: Heleen Van Der Biest.;Sarah Verhulst.;Hannah Keppler.;Leen Maes.;Frederic Acke.;Eline Naert.;Sylvie Rottey.;Ingeborg Dhooge.
来源: Support Care Cancer. 2026年34卷4期
To evaluate the feasibility of incorporating both standard and novel audiological and vestibular assessments into routine oncology care. A secondary objective was to characterize audiovestibular status prior to platinum-based chemotherapy and identify potential risk factors for cochleotoxicity and vestibulotoxicity.
243. Immune-Related Adverse Events in Bladder Cancer Patients Treated With Immune Checkpoint Inhibitors: Insights From a FAERS Disproportionality Analysis.
Immune checkpoint inhibitors (ICIs) are an important treatment option in bladder cancer, but clinical trials have demonstrated that they are associated with immune-related adverse events (irAEs), such as rash, hypothyroidism, hyperthyroidism, and others. This study aimed to evaluate real-world evidence of these irAEs using the FDA Adverse Event Reporting System (FAERS).
244. Synthesis of silicon (IV)-based Phthalocyanine N3-nucleoside conjugates with absorption, aggregation, solvent effects, and in vitro anticancer activity.
作者: Ahmed Khalil.;Emad A Ahmed.;Mohamed Shaker S Adam.;Mostafa Y Nassar.;Mohammed Salah Ayoup.
来源: Bioorg Chem. 2026年175卷109811页
Silicon (IV)-based phthalocyanines (Si(IV)-Pcs) are attractive scaffolds for photodynamic therapy due to their strong absorption in the therapeutic window and tunable photophysical properties. In this work, a novel N3-thymidine-silicon(IV) phthalocyanine conjugate was prepared via axial substitution using a propyl spacer and fully characterized by spectroscopic techniques and high-resolution mass spectrometry. UV-Vis studies revealed pronounced solvent-dependent behavior, with concentration-dependent measurements in DMSO demonstrating strict adherence to the Beer-Lambert law (ε = 2.17 × 105 L·mol-1·cm-1 at 674 nm), indicating that predominantly monomeric species were present under these conditions. The behavior of aggregation induced by solvents was observed in mixtures with a high methanol content. Molecular docking studies suggested an enhanced binding affinity of the conjugate toward selected cancer-relevant protein targets compared to the Si(IV)-Pcs. In vitro biological evaluation showed that the conjugate exhibited improved cytotoxic and anti-migratory activity against breast cancer cell lines relative to the Si(IV)-Pcs. Molecular docking further indicated that both the Si(IV)-Pc dichloride and nucleoside-conjugated silicon phthalocyanine engage key residues implicated in apoptosis regulation and migration, supporting their relevance to the targeted cancer pathways. The conjugates, however, appear to expand the interaction surface at the protein binding sites, increasing the number of contacts and overall binding energy. These findings highlight the potential of nucleoside-conjugated silicon phthalocyanines as scaffolds for controlling aggregation, paving the way for further development in photodynamic and anticancer applications.
245. Synthesis of chromone-indole derivatives and evaluation of their antitumor activity.
作者: Ling-Rong Zeng.;Yang Shi.;Jin Liu.;Zhang-Chao Dong.;Ting-Ting Feng.;Ying Zhou.;Bo-Wen Pan.
来源: Bioorg Chem. 2026年175卷109809页
Cancer remains a major global health threat, creating an urgent demand for new, selective small-molecule anticancer agents. To address the paucity of potent, targeted chromone-derived antitumor compounds and fill the knowledge gap in C-2 modified chromone-indole hybrids, we designed, synthesized, and biologically evaluated 24 novel chromone-indole hybrids via C-2 modification of the chromone core and conjugation with indole. All compounds were characterized by 1H NMR, 13C NMR and High-resolution mass spectrometry (HRMS), with single-crystal X-ray diffraction for compound 3 k. In vitro Cell Counting Kit-8 (CCK-8) assays (cisplatin as positive control) identified several potent and selective antiproliferative agents: 3q (IC50 = 14.05 ± 0.95 μM, K562), 3m (IC50 = 13.95 ± 0.98 μM, HeLa) and notably 3h (IC50 = 6.70 ± 0.37 μM, AGS). Network pharmacology and PPI analysis identified MDM2, MAPK1, PGR and AR as core targets; molecular docking confirmed stable binding via hydrogen bonds, π -π stacking and halogen interactions. Label-free surface plasmon resonance(SPR)assays verified direct binding of 3 h to Progesterone receptor (PGR) (KD = 2.41 × 10-6 M; ka = 70.07 × 103 M-1·s-1, kd = 16.87 × 10-2 s-1, τ = 5.93 s), confirming target engagement.Collectively, this study addresses critical gaps in chromone-indole hybrid research, provides an efficient synthetic strategy, and identifies 3 h as a promising lead candidate for further optimization and in vivo studies.
246. Synergistic inhibition of tumor growth by MET and COX-2 targeting in gastric and colorectal cancers.
作者: Shuai Zhang.;Fen Wang.;Xin An.;Mengxuan Wang.;Yan Lou.;Jiaqi Qiu.;Fangyi Jia.;Xin Li.;Yuxue Xu.;Xingshu Li.;Geng Tian.;Baijiao An.
来源: Bioorg Chem. 2026年175卷109791页
Gastric and colorectal cancers are common and deadly across the globe. Preclinical findings propose that the pairing of MET inhibitors with anti-inflammatory drugs could synergistically impede tumor growth and reshape the tumor microenvironment. This study introduces AspMet, a novel dual-targeting inhibitor of c-Met and COX-2. In vitro experiments demonstrated that AspMet significantly inhibited the proliferation of MKN45 (IC50 = 1.05 ± 0.02 nM) and SW480 (IC50 = 1.32 ± 0.01 μM) cell lines. The experimental data indicate that AspMet effectively blocks several cancer-promoting signaling pathways, including c-Met、TRKB、COX-2 and HIF-1α, significantly inhibits epithelial-mesenchymal transition, thus decreasing tumor cell migration and invasion, and causes DNA damage, resulting in G0/G1 cell cycle arrest and the initiation of apoptosis. Furthermore, AspMet has strong anti-angiogenic properties. In animal models, AspMet significantly reduced the growth of subcutaneous tumors in both gastric and colorectal cancers,and it has an extremely high bioavailability. Therefore, the dual inhibition strategy targeting c-Met and COX-2 offers a promising novel approach for the treatment of cancers, particularly inflammatory cancers.
247. Polypharmacologic phosphoinositide modulation by FTY720 triggers endomembrane trafficking collapse and metabolic starvation in cancer cells.
作者: Satoshi Kofuji.;Kazutaka Sumita.;Yoshiki Ikeda.;Yasufumi Takahashi.;Sho Tabata.;Doshun Ito.;Yoshihisa Hirota.;Mika Sasaki.;Hirotaka Kanoh.;Fubito Nakatsu.;Koh Takeuchi.;Toshiya Senda.;Mindy I Davis.;Min Shen.;Hiroaki Wakimoto.;Akiyoshi Hirayama.;Tomoyoshi Soga.;Anton Simeonov.;Atsuo T Sasaki.
来源: Biochem Biophys Res Commun. 2026年815卷153671页
Phosphoinositides coordinate membrane trafficking and bioenergetic homeostasis, and many tumors rely on elevated phosphoinositide flux to sustain growth. Therapeutic development has largely pursued single-phosphoinositide kinase inhibition, whereas polypharmacologic strategies that perturb the broader network remain underexplored. FTY720 (fingolimod), a clinically approved sphingosine-1-phosphate receptor modulator, shows anti-tumor activity at micromolar concentrations, but its non-canonical mechanisms remain incompletely defined. Building on our work with the structurally related compound KRP203, we show that high-dose FTY720 produces isozyme-divergent modulation across phosphoinositide kinases and biases PIKFYVE activity toward phosphatidylinositol, a pattern we term ASURA (Asymmetric Simultaneous Uncoupling of Related Activities). FTY720 induces vacuolization and endomembrane remodeling in cancer cells, and suppresses macropinocytic ruffling as demonstrated by tracer uptake and scanning ion conductance microscopy analyses. Quantitative metabolomics revealed depletion of intracellular amino acids and ribonucleoside triphosphates, coupled with reduced glycolysis. Concurrently, FTY720 induced extensive rewiring of the hexosamine pathway, nitrogen metabolism, and tricarboxylic acid (TCA)-cycle anaplerosis, along with redox signatures indicating oxidative stress despite a nutrient-replete medium. The metabolites depleted by FTY720 showed extensive, directionally concordant overlap with those depleted by PTEN induction. Patient-derived glioblastoma (GBM) neurospheres were sensitive to FTY720, and co-treatment with a PI3Kα-selective inhibitor augmented growth suppression in U87MG cells. Together, these data support a model in which ASURA-dose FTY720 disrupts phosphoinositide-regulated trafficking and nutrient access, imposing intracellular nutrient stress that culminates in tumor-cell death.
248. Key Considerations for Targeting KRAS in Pancreatic Cancer: Potential Impact on the Treatment Paradigm.
作者: Cody Eslinger.;Mohamad Bassam Sonbol.;Ben George.;Hani Babiker.;Mitesh J Borad.;Tanios S Bekaii-Saab.
来源: Drug Des Devel Ther. 2026年20卷559325页
Pancreatic ductal adenocarcinoma (PDAC) is among the most lethal solid malignancies, characterized by aggressive biology and a paucity of effective treatments. Activating mutations in KRAS occur in more than 90% of cases and are fundamental to tumor initiation, progression, therapeutic resistance, and immune exclusion, establishing KRAS as the dominant oncogenic driver in PDAC. Long considered undruggable, KRAS has recently become a viable therapeutic target with the development of allele-specific inhibitors as well as pan-RAS(ON) agents capable of broadly suppressing mutant RAS signaling. Preclinical models and early-phase clinical trials demonstrate meaningful antitumor activity, with emerging evidence of tumor microenvironment remodeling and delayed resistance. Combination strategies integrating KRAS-directed therapies with chemotherapy, vertical pathway inhibition, immunotherapy, and emerging approaches such as KRAS degradation and RNA-targeted approaches are being explored to improve the depth and durability of response. Together, these advances signal a paradigm shift toward molecularly guided treatment strategies in PDAC and offer a promising path forward in a disease with substantial unmet clinical need.
249. Aptamer-Mediated Dual-Loaded Liposomal Nanosystem for Synergistic Therapy in Hepatocellular Carcinoma via mTOR/HIF-1α/VEGF Pathway.
作者: Aiqiu Wei.;Ziyi Zhong.;Yiming Zhang.;Jincheng He.;Haihe Pang.;Xinhua Xia.;Xiaoqing Zhang.
来源: Int J Nanomedicine. 2026年21卷556912页
Cantharidin (CTD) is a natural anticancer compound whose clinical application is limited by poor water solubility, low bioavailability, and significant toxicity. To develop a more effective and safer therapeutic strategy, we proposed a synergistic combination therapy by integrating CTD with staurosporine (STS), a protein kinase inhibitor that shares complementary mechanisms of action targeting the mTOR/HIF-1α/VEGF pathway. We further developed an aptamer-guided liposomal nanosystem for the co-delivery of CTD and STS (Apt/CTD-STS/NL), aiming to enhance tumor targeting, improve bioavailability, and reduce the systemic toxicity of both drugs.
250. Investigating the Therapeutic Potential of Cinnamic Acid in Vascular Dementia Through PARP1 Inhibition and Microglial M2 Polarization.
Vascular dementia (VD) is a cerebrovascular disease-associated cognitive disorder characterized by chronic neuroinflammation. Cinnamic acid (CA), a natural aromatic carboxylic acid, has been demonstrated to mitigate neurological dysfunction. In this study, a two-vessel occlusion (2-VO) rat model was established, and the rats were treated with CA at doses of 45 mg/kg and 90 mg/kg via intragastric gavage. CA treatment significantly restored cognitive function in 2-VO rats, which was attributed to the reduction of neuronal apoptosis. Furthermore, CA administration downregulated the expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in the hippocampal tissues, while upregulating the expressions of arginase-1 (Arg-1), found in inflammatory zone 1 (Fizz1), and chitinase 3-like 3 (YM-1). These observations suggest that CA promotes the alternatively activated (M2) polarization of microglia in hippocampal tissues. To simulate the neuroinflammatory environment in vitro, BV2 cells were subjected to oxygen-glucose deprivation/reoxygenation (OGD/R) treatment. CA pretreatment promotes M2 polarization in OGD/R-induced BV2 cells, opposing OGD/R-driven M1 polarization in these cells. Importantly, network pharmacology analysis identified poly (ADP-ribose) polymerase 1 (PARP1) as a downstream target of CA. PARP1 expression was upregulated in the hippocampal tissues of 2-VO rats and OGD/R-induced BV2 cells, while CA treatment significantly reduced PARP1 expression. Notably, exogenous PARP1 reversed the CA-induced promotion of the microglial M2 phenotype, as evidenced by increased iNOS expression and decreased Arg-1 expression. In conclusion, CA targets PARP1 to promote the M2 polarization of microglia, thereby alleviating neuroinflammation and contributing to the recovery of neurological function in 2-VO rats.
251. Design, Synthesis, In Silico Profiling, and In Vitro Anticancer Assessment of Azine-Linked Thiazolo[3,2-a]benzimidazoles as CDK2-Directed Therapeutic Candidates.
作者: Mohamed S M Ahmed.;Sayed M Riyadh.;Mohammad Alhilal.;Magdi E A Zaki.;Suzan Alhilal.;Mohamed El-Naggar.;Wesam Hussein.;Ahmed A Elhenawy.;Sobhi M Gomha.
来源: Drug Dev Res. 2026年87卷2期e70272页
A series of unsymmetrical azine-linked thiazolo[3,2-a]benzimidazole derivatives (4a-r) was synthesized and structurally characterized. Density functional theory (DFT) calculations, including frontier molecular orbital (FMO) analysis and global reactivity descriptors, supported the preferential formation of the E-isomeric forms. In silico target prediction prioritized cyclin-dependent kinase 2 (CDK2), and molecular docking of representative active members (4b, 4 d, 4p, and 4r) revealed key contacts around Arg83/Pro84 and favorable binding energies ( - 3.91 to -6.20 kcal/mol). In vitro antiproliferative activity against human colon carcinoma (HCT-116) and human hepatocellular carcinoma (HepG2) cell lines identified 4r as the most potent compound (half-maximal inhibitory concentration, IC50 = 5.26 ± 0.37 and 5.03 ± 0.42 µM, respectively), surpassing doxorubicin (IC50 = 7.05 ± 0.49 and 6.42 ± 0.31 µM). Absorption, distribution, metabolism, excretion, and toxicity (ADMET) prediction indicated high gastrointestinal (GI) absorption, no blood-brain barrier (BBB) permeation, no P-glycoprotein (P-gp) substrate liability, a bioavailability score of 0.55, and zero pan-assay interference compounds (PAINS) alerts. Overall, the integrated synthetic, computational, and biological results highlight azine-linked thiazolo[3,2-a]benzimidazoles, particularly 4r, as promising CDK2-directed anticancer leads.
252. A LAT1-Compatible, Leadlike Tyrosine-Naphthoquinone Conjugate With Anticancer Activity.
作者: Austin Seymour.;Christian Peterson.;Raymond Osafo.;Abdullahi A Ashimi.;Dylan Williams.;Laura Echezabal.;Chelsea Carrier.;Alysa Clarke.;Clifford W Padgett.;Mark Vincent C Dela Cerna.;Zheni Utic.;Divine Wanduku.;Nathaniel Shank.;Karelle S Aiken.;Jannet Kocerha.
来源: Drug Dev Res. 2026年87卷2期e70269页
A L-type amino acid transporter 1 (LAT1)-compatible, anticancer-active tyrosine-naphthoquinone (NQ) conjugate was successfully developed. The conjugate was designed to exploit LAT1 overexpression in cancers with the goal of achieving selective cytotoxicity for cancerous over noncancerous cells. The tyrosine-NQ molecule was subjected to cell viability, imaging, docking and in silico pharmacological studies along with structure-activity relationship (SAR) assessment. Cell viability investigations included IC50 and substrate-competition studies. Cells of cancerous (PC3) and noncancerous (HEK293) origin with high and minimal expressions of LAT1, respectively, were employed for biochemical investigations. The tyrosine-NQ assembly showed significant cytotoxic selectivity toward PC3 over HEK293, with activity comparable to that of the parent molecule NQ and doxorubicin (DOX), an approved drug. Docking studies demonstrated that the conjugate is LAT1-compatible as it interacts with key residues along the protein's transport pathway. Cell viability competition studies verify a LAT1-facilitated uptake. SAR studies revealed that the conjugate's anticancer activity is due to its aryloxy-naphthoquinone motif. In silico pharmacological investigations determined that the conjugate is leadlike and therefore, well-suited for structural modifications for further drug development. Finally, imaging investigations showed that, with PC3, the conjugate caused drug-induced stress-responses in nuclear morphology. Overall, findings demonstrate that the tyrosine-NQ conjugate is a promising lead for the design of LAT1-targeting, NQ-based chemotherapeutics.
253. [A Retrospective Multicenter Study to Examine the Risk Factors for Febrile Neutropenia during Amrubicin Hydrochloride Therapy for Recurrent Small Cell Lung Cancer].
作者: Takuya Mura.;Takuma Matsumoto.;Ryo Takada.;Kazuhiro Kojin.;Miho Tsukuda.;Terutaka Hamaoka.;Yasushi Semba.;Yoshikazu Ogawa.;Shuichi Nishizawa.
来源: Yakugaku Zasshi. 2026年146卷4期333-338页
In Japan, amrubicin hydrochloride (AMR) is occasionally administered to patients with recurrent small cell lung cancer (SCLC). AMR therapy can induce febrile neutropenia (FN), a complication that may be fatal or compromise therapeutic efficacy due to treatment interruption or dose reduction. Identifying risk factors for FN is therefore critical to ensuring safe and effective AMR administration. Current evidence on this issue remains limited to small case series, underscoring the need for more robust studies. We conducted a multicenter retrospective analysis to examine predictors of FN during AMR treatment for recurrent SCLC. Patients who received AMR between April 1, 2013, and March 31, 2023, were included. The cohort comprised 256 patients, divided into 192 without FN and 64 with FN. Multivariate analysis demonstrated that performance status (PS) >2 (odds ratio: 5.8, 95% confidence interval: 1.70-19.80, p=0.005) and hematocrit (HCT) (odds ratio: 0.93, 95% confidence interval: 0.877-0.994, p=0.033) were significantly associated with FN development. These findings suggest that PS and HCT may serve as key indicators for predicting FN during AMR therapy in patients with recurrent SCLC.
254. Investigation of the Chemical Composition and Bioactivities of Essential Oil from Leaves of Myrsine linearis (Lour.).
作者: Ty Viet Pham.;Thao Xuan Hoang.;Dang Khoa Phan Nguyen.;Thai Hoang Truong.;Tuong Vy Le Thi.;Gia-Buu Tran.;Bich Hang Do.
来源: J Oleo Sci. 2026年75卷4期477-490页
Myrsine linearis (Lour.) is a medicinal plant in Vietnam that was used to treat various diseases. However, the phytochemical and biological activities of this plant have not been extensively investigated. Therefore, this study extracted the essential oil from Myrsine linearis leaves (MLEO), followed by the identification of phytochemical components and the evaluation of anti-inflammatory and anticancer activities in vitro and in silico. The results showed that major constituents in MLEO were β-caryophyllene (11.3 %), α-humulene (10.3 %), caryophyllene oxide (4.6 %), and spathulenol (4.3 %). MLEO inhibited the protein denaturation (IC50 =34.01±5.64 µg/mL) and inhibited nitric oxide release in LPS-induced macrophage with the value of 33.19±1.78 %. The main compounds in MLEO bound to cyclooxygenase-2 and nitric oxide synthase, with binding energy values ranging from -6.1 to -7.5 kcal/mol, similar to those of positive controls. Additionally, MLEO demonstrated cytotoxicity against different cancer cells, with IC50 values ranging from 20.26±1.1 µg/mL to 21.11±1.41 µg/mL. Therefore, MLEO is a promising candidate for supporting the treatment of diseases relating to inflammation and cancer.
255. Synthesis and biological evaluation of novel fused pyridopyrimidine derivatives as topoisomerase I inhibitors and as potential antitumor agents: promising results in lung, ovary and gastric cancer.
作者: Leyre Lopez-Aguileta.;Endika Martín-Encinas.;Birgitta R Knudsen.;Cinzia Tesauro.;Annalisa Schirizzi.;Rosangela Montanaro.;Rosalba D'Alessandro.;Maria Grazia Perrone.;Angela Stefanachi.;Marialessandra Contino.;Concepcion Alonso.
来源: Eur J Med Chem. 2026年310卷118782页
The topoisomerase I (TOP1) enzymatic inhibition was investigated using novel pyrimidine and quinazolinone derivatives. First, the synthesis of these compounds was performed by intramolecular cycloaddition reaction of functionalized aminoalcohols, aminoesters and aldimines, obtained by the condensation of 2-aminopyridine and unsaturated aldehydes, affording corresponding pyrido[1,2-a]pyrimidine derivatives, pyrido[2,1-b]quinazolin-11-one derivatives and hybrid chromeno[4,3-d]pyrido[1,2-a]pyrimidine compounds respectively with good to high general yields. The vast majority of prepared products showed notable and excellent activity as inhibitors of TOP1. The cytotoxic effect on cell lines derived from human lung adenocarcinoma (A549), human ovarian carcinoma (SKOV-3), human gastric adenocarcinoma (AGS), human undifferentiated gastric adenocarcinoma derived from the metastatic lymph node (HGC27), and on non-cancerous lung fibroblasts cell line (MRC-5) was also screened. Dihydrochromeno[4,3-d]pyrido[1,2-a]pyrimidine 9b was the most cytotoxic compound with IC50 values of 6.0 ± 0.3 nM in the A549 cell line, and with IC50 values of 4.67 ± 0.02 μM in the SKOV-3 cell line. Compound 9p (LL123) also proved to be a good candidate in two human gastric carcinoma lines (HGC27 and AGS). Furthermore, none of the compounds with outstanding results showed toxicity against non-malignant lung fibroblasts (MRC-5).
256. Intraperitoneal CF33-hNIS combined with PD-L1 blockade eradicates gastric cancer peritoneal metastases and prevents recurrence via durable T cell memory.
作者: Annie Yang.;Zhifang Zhang.;Anthony K Park.;Shyambabu Chaurasiya.;Sang-In Kim.;Jianming Lu.;Yoya Vashi.;Jennifer Cillis.;Hannah Valencia.;Courtney Chen.;Supriya Deshpande.;Yuman Fong.;Yanghee Woo.
来源: J Immunother Cancer. 2026年14卷4期
Peritoneal metastasis (PM) from gastric cancer (GC) is associated with poor prognosis and limited treatment options. We investigated a novel peritoneal-targeted therapy using CF33-human sodium iodide symporter (hNIS), a chimeric orthopoxvirus, combined with anti-PD-L1 immune checkpoint blockade in an immunocompetent mouse model of GCPM.
257. Neuro-Ophthalmic Complications of Immune Checkpoint Inhibitors.
Neuro-ophthalmic complications associated with immune checkpoint inhibitors (ICIs) are rare. These involve adverse events primarily affecting the optic nerve, other cranial nerves, and the neuromuscular junction. Myasthenia gravis-like syndrome (often with concomitant myositis) is the most commonly reported immune-related adverse event, followed by optic neuropathy, of which the most notable is optic neuritis. Symptoms typically present within 6 months of exposure. Prompt and comprehensive evaluation is essential. Diagnostic work-up may include MRI brain and orbits, lumbar puncture, serum, and cerebrospinal fluid antibody testing.
258. Supporting patients receiving oral systemic anti-cancer therapies.
Oral systemic anti-cancer therapies improve convenience, but also shift responsibility for treatment management to the patient. Education, communication, and models of care must adapt to support safe, equitable, and sustainable oral anti-cancer treatment.
259. Design, Synthesis, and Biological Evaluation of Benzimidazole-Pyrazole Hybrids as Aromatase Inhibitors for Breast Cancer Therapy.
作者: Supriya Sharma.;Jay Prakash Soni.;Milind J Umekar.;Uma Dhiraj Kabra.
来源: Chem Biodivers. 2026年23卷4期e03557页
Current aromatase inhibitors (AIs) are limited by poor bioavailability and high toxicity, underscoring the need for the development of new therapeutics. In the present study, a series of 12 benzimidazole-pyrazole hybrids was designed, synthesized, and structurally characterized using infrared spectroscopy, mass spectrometry, nuclear magnetic resonance spectroscopy, and elemental analysis. Their anti-breast cancer potential was evaluated against the MCF-7 cell line using the MTT assay. Notably, compounds 5g and 5i exhibited the highest cytotoxicity, reflected by the lowest IC50 values, while showing minimal toxicity toward the normal cell line, NIH3T3. Aromatase inhibitory activity, assessed using the fluorometric assay, further identified compound 5g as the most potent inhibitor. Complementary molecular docking studies demonstrated that compounds 5g and 5i form favorable interactions with the aromatase enzyme, showing higher binding affinity compared to letrozole, providing mechanistic insight into their inhibitory activity. ADMET analysis further confirmed the drug-likeness and pharmacokinetic suitability of the synthesized derivatives. Collectively, these results establish compound 5g as a promising lead for aromatase inhibition, necessitating further in vivo evaluation.
260. Virtual Screening and Characterization of AN-329/11627212 as a Novel Inhibitor Disrupting the EED-H3K27me3 Interaction.
作者: Ning Zhou.;Zhili Zuo.;Haiqiong Cao.;Chengwen Tian.;Yan Liu.;Shenghong Li.;Lihu Gong.
来源: Chem Biodivers. 2026年23卷4期e71171页
The key epigenetic regulator polycomb repressive complex 2 (PRC2) is dysregulated in multiple cancers. While most therapeutic strategies target its catalytic EZH2 subunit, inhibition of its allosteric EED subunit offers a potential strategy for overcoming emerging drug resistance. Here, we identify and characterize AN-329/11627212, a novel EED-targeting compound, through structure-based virtual screening. Biochemical and biophysical analyses confirm its direct binding to EED. Strikingly, x-ray crystallography reveals that AN-329/11627212 induces dissociation of the pre-bound EED-H3K27me3 complex, consistent with a "hit-and-run" inhibitory mechanism. Detailed molecular docking revealed that AN-329/11627212 embeds itself within EED's allosteric H3K27me3-binding pocket. Functionally, AN-329/11627212 exhibited anti-proliferative activity in PRC2-dependent cancer cell lines, most potently against HCT116 colon cancer cells. Our work identifies AN-329/11627212 as a novel chemotype that acts by dissociating the EED-H3K27me3 complex, providing a foundation for developing next-generation anti-tumor agents targeting PRC2.
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