98%
921
2 minutes
20
Luteolin, a flavonoid with well-documented antioxidant properties, has garnered significant attention for its potential therapeutic effects. : This study aims to investigate the antioxidant properties of luteolin under the influence of solvents, utilizing computational techniques to elucidate its interactions and its potential role as a modulator of enzymatic activities, particularly with Cytochrome 17A1. : Density Functional Theory (DFT) calculations were employed to determine luteolin's electronic and structural characteristics. Key aspects analyzed included electron density distribution and the energies of the frontier molecular orbitals (HOMO and LUMO). Free radical scavenging mechanisms were explored by comparing the dissociation enthalpy of the O-H bond in the absence and presence of water molecules. Additionally, molecular docking simulations were performed to assess the interactions of luteolin with Cytochrome 17A1, identifying preferred binding sites and interaction energies. : The findings indicate that luteolin possesses distinct structural and electronic features that contribute to its effectiveness in protecting against oxidative stress. However, hydrogen bonding interactions with water molecules were found to influence the dissociation enthalpy of the O-H bond. Docking simulations revealed significant interaction profiles between luteolin and Cytochrome 17A1, suggesting its potential role as a modulator of this protein. : This study underscores the therapeutic potential of luteolin and highlights the importance of computational techniques in predicting and understanding the molecular interactions of bioactive compounds with biological targets. The results provide valuable insights that may aid in developing new therapeutic strategies for diseases associated with oxidative stress.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944526 | PMC |
http://dx.doi.org/10.3390/ph18030410 | DOI Listing |
J Chem Phys
May 2025
Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies, Heidelberg, Germany.
The electron transfer steps in the catalytic cycle of cytochrome P450 (CYP) enzymes, ubiquitous proteins with key roles in processes such as drug metabolism and steroidogenesis, are often rate-limiting. To predict ET rates from atomistic molecular dynamics simulations using Marcus theory, values of the reaction free energy ΔG0 and the reorganization free energy λ are required from either experiments or computations. For the reduction of cytochrome P450 17A1 (CYP17A1) by the secondary redox protein cytochrome b5 (CYb5), a critical step in the regulation of steroidogenesis, experimental measurements of λ are not available.
View Article and Find Full Text PDFBiochemistry
May 2025
Division of Metabolism, Endocrinology, & Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States.
The 17-hydroxylase and 17,20-lyase activities of cytochrome P450 17A1 are required for androgen biosynthesis, which is the target of the prostate-cancer drug abiraterone acetate. Cytochrome (b5) stimulates the 17,20-lyase activity 8-fold in reconstituted systems containing P450-oxidoreductase (POR); however, the mechanism of the b5 effect and the rate-limiting step(s) of these catalytic cycles are not known. Using stopped flow spectroscopy and rapid chemical quench under single-turnover conditions, we determined the effects of b5 on rates of individual steps of the 17-hydroxylase and 17,20-lyase reactions.
View Article and Find Full Text PDFSci Rep
April 2025
Pediatric Endocrinology, University Children's Hospital, University Hospital Bern, Inselspital, Freiburgstrasse 15, KIKL C837, 3010, Bern, Switzerland.
Endogenous androgens are pivotal in the development and progression of prostate cancer (PC). We investigated nanoparticle formulations of curcumin and piperine in modulating steroidogenesis within PC cells. Using multiple PC cell lines (LNCaP, VCaP, DU145 and PC3) we studied the effects of curcumin, piperine, and their nanoparticle formulations-curcumin nanoparticles, piperine nanoparticles, and curcumin-piperine nanoparticles (CPN)-on cell viability, migration, and steroid biosynthesis.
View Article and Find Full Text PDFPharmaceuticals (Basel)
March 2025
Theoretical and Structural Chemistry Group of Anápolis, State University of Goiás, Anápolis 75132-903, GO, Brazil.
Luteolin, a flavonoid with well-documented antioxidant properties, has garnered significant attention for its potential therapeutic effects. : This study aims to investigate the antioxidant properties of luteolin under the influence of solvents, utilizing computational techniques to elucidate its interactions and its potential role as a modulator of enzymatic activities, particularly with Cytochrome 17A1. : Density Functional Theory (DFT) calculations were employed to determine luteolin's electronic and structural characteristics.
View Article and Find Full Text PDFJACC CardioOncol
December 2024
Division of Urology, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
Cardiovascular disease is common in patients with prostate cancer and is a significant cause of death. Cardiovascular risk factors are frequent in this population and are often not addressed to thresholds recommended by cardiovascular practice guidelines. Androgen deprivation therapy reduces muscle strength and increases adiposity, increasing the risk for diabetes and hypertension, although its relationship with adverse cardiovascular events requires confirmation.
View Article and Find Full Text PDF