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Cryo-EM structures reveal the H/citrate symport mechanism of INDY.
Life Sci Alliance
April 2025
School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
I'm Not Dead Yet (INDY) functions as a transporter for citrate, a key metabolite in the citric acid cycle, across the plasma membrane. Partial deficiency of INDY extends lifespan, akin to the effects of caloric restriction. In this work, we use cryo-electron microscopy to determine structures of INDY in the presence and absence of citrate and in complex with the well-known inhibitor 4,4'-diisothiocyano-2,2'-disulfonic acid stilbene (DIDS) at resolutions ranging from 2.
View Article and Find Full Text PDFImpact of iron chelation with deferasirox on telomere length and oxidative stress in hemodialysis patients: A randomized study.
Nefrologia (Engl Ed)
January 2025
Department of Hemodialysis, Hospital General Regional No. 58, Mexican Institute of Social Security, León, Guanajuato, Mexico.
Background: Recent studies have demonstrated the effectiveness, safety, and tolerability of deferasirox in patients in peritoneal dialysis, however, its effect has not been studied in patients undergoing hemodialysis.
Objective: To investigate the impact of iron chelation on telomere length, oxidative stress, and ferritin levels in patients undergoing hemodialysis.
Methods: This is an open-label study, with a control group of patients undergoing hemodialysis, who will receive treatment with deferasirox 15mg/kg/day for 6 months for iron chelation.
Exploring the Ascorbate Requirement of the 2-Oxoglutarate-Dependent Dioxygenases.
J Med Chem
January 2025
Ma̅tai Ha̅ora - Centre for Redox Biology and Medicine, Department of Biomedical Science and Pathology, University of Otago, Christchurch, Christchurch 8140, New Zealand.
In humans, the 2-oxoglutarate-dependent dioxygenases (2-OGDDs) catalyze hydroxylation reactions involved in cell metabolism, the biosynthesis of small molecules, DNA and RNA demethylation, the hypoxic response and the formation of collagen. The reaction is catalyzed by a highly oxidizing ferryl-oxo species produced when the active site non-heme iron engages molecular oxygen. Enzyme activity is specifically stimulated by l-ascorbic acid (ascorbate, vitamin C), an effect not well mimicked by other reducing agents.
View Article and Find Full Text PDFAnti-melanogenic effects of hydroxyethyl chrysin through the inhibition of tyrosinase activity: and approaches.
Heliyon
January 2025
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea.
The suppression of tyrosinase (TYR), a key enzyme in melanogenesis, has been suggested as an effective strategy for preventing melanin accumulation. We previously discovered the novel chrysin derivative hydroxyethyl chrysin (HE-chrysin) through an irradiation technique, which exerted higher anti-inflammatory and anti-cancer activities than original chrysin. In the present study, we explored whether HE-chrysin has antioxidant and anti-melanogenic capacity using B16F10 murine melanoma cells and molecular docking.
View Article and Find Full Text PDFCD44-Receptors-Mediated Multiprong Targeting Strategy Against Breast Cancer and Tumor-Associated Macrophages: Design, Optimization, Characterization, and Cytologic Evaluation.
Int J Nanomedicine
January 2025
Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, 11451 Saudi Arabia.
Introduction: Owing to its high prevalence, colossal potential of chemoresistance, metastasis, and relapse, breast cancer (BC) is the second leading cause of cancer-related fatalities in women. Several treatments (eg, chemotherapy, surgery, radiations, hormonal therapy, etc.) are conventionally prescribed for the treatment of BC; however, these are associated with serious systemic aftermaths.
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