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Fluorenyl-phthalimide hybrids as potent aldose reductase inhibitors with selective anticancer activity: Rational design, synthesis, and molecular insights    
Yazarlar (5)
Saliha Gundogdu
Doç. Dr. Hatice Esra DURAN Doç. Dr. Hatice Esra DURAN
Kafkas Üniversitesi, Türkiye
Mustafa Arslan
Busra Demir Cetinkaya
Cuneyt Turkes
Devamını Göster
Özet
Metabolic reprogramming in cancer cells creates actionable vulnerabilities for precision oncology. Aldose reductase (ALR2, AKR1B1; EC 1.1.1.21), a cytosolic NADPH-dependent oxidoreductase, has emerged as a multifunctional player in tumor progression, drug resistance, and oxidative stress modulation, yet remains underexploited as a cancer target. In this study, we report the rational design, synthesis, and biological evaluation of a focused series of fluorenyl-phthalimide carboxylic-acid hybrids (5a-5l) as dual-acting agents with selective anticancer potential and potent ALR2 inhibition. Among them, compound 5a exhibited the strongest ALR2 inhibition with a K of 8.71 ± 0.81 nM, far surpassing the clinical comparator epalrestat (K = 232.10 ± 14.42 nM). In MCF-7 and A549 carcinoma cells, 5a demonstrated moderate antiproliferative activity (IC = 52.04 μM and 192.91 μM, respectively) while sparing normal bronchial epithelial cells, indicating tumor selectivity. Molecular docking and MM-GBSA calculations (ΔGbind = -44.02 kcal/mol) revealed a consistent bidentate hydrogen bonding network supporting high-affinity binding involving Tyr48, His110, and Trp111, further stabilized by crystallographic water molecules. To explore structure-activity relationships, a Random Forest regression model was developed using 24 descriptors derived from QikProp. The model achieved strong predictive performance (QCV = 0.71), and SHAP analysis identified water/gas partition coefficient, skin permeability, and human oral absorption as the most influential features shaping inhibitory potency. In silico ADME/Tox profiling supported the drug-like nature of compound 5a, with no major CYP or hERG liabilities predicted. Collectively, these findings position 5a as a first-in-class ALR2-targeted anticancer lead, introducing a chemically novel and mechanistically validated chemotype for further development within the framework of metabolically targeted precision therapies.
Anahtar Kelimeler
Aldose reductase inhibitors | Fluorenyl-phthalimide hybrids | Rational drug design | Targeted therapy | Selective cytotoxicity | Precision oncology | Machine learning
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı BIOORGANIC CHEMISTRY
Dergi ISSN 0045-2068 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 08-2025
Cilt No 163
Doi Numarası 10.1016/j.bioorg.2025.108689