Inside the eukaryotic cell, mitochondria are internal organelles of prokaryotic origin, responsible for energy supply in the cell. The control of the mitochondrial ATP production is a complex problem with different patterns according to different tissues and organs. Our aim is to continue to develop the modelling of oxidative phosphorylation in different tissues, to model other parts of mitochondrial metabolism and to include this virtual mitochondria in a virtual cell. In constructing the complete metabolic map of mitochondria, we will take advantage of the sequenced genomes of eukaryotic organism (10-15% of the yeast genome concerns mitochondria).
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http://dx.doi.org/10.1023/a:1020338115406 | DOI Listing |
Nat Metab
December 2024
Department of Biomedicine, University of Bergen, Bergen, Norway.
The coenzyme NAD is consumed by signalling enzymes, including poly-ADP-ribosyltransferases (PARPs) and sirtuins. Ageing is associated with a decrease in cellular NAD levels, but how cells cope with persistently decreased NAD concentrations is unclear. Here, we show that subcellular NAD pools are interconnected, with mitochondria acting as a rheostat to maintain NAD levels upon excessive consumption.
View Article and Find Full Text PDFJ Cell Mol Med
December 2024
Guangdong Provincial Key Laboratory of Digital Medicine and Biomechanics & Guangdong Engineering Research Center for Translation of Medical 3D Printing Application & National Virtual & Reality Experimental Education Center for Medical Morphology (Southern Medical University) & National key Discipline of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
Mitochondria are important organelles in the human body and play a major role in providing cellular energy, maintaining tissue homeostasis and apoptosis. Osteoporosis, characterised by a decrease in the amount of bone tissue per unit volume, is a metabolic bone pathology with multiple causes. Under pathological conditions, mitochondrial dysfunction leads to an imbalance in mitochondrial homeostasis, resulting in a disruption of osteoblast-osteoclast homeostasis, which in turn disrupts bone homeostasis, and this disruption of homeostasis is an important pathogenetic mechanism underlying chronic metabolic bone disease in osteoporosis.
View Article and Find Full Text PDFActa Pharmacol Sin
December 2024
Laboratory of Biochemistry, Structural and Molecular Biology, Department of Pharmacy - Pharmaceutical Sciences, University of Bari "Aldo Moro", 70125, Bari, Italy.
Carnitine O-acetyltransferase (CRAT) is a crucial enzyme involved in mitochondrial energy metabolism. Alterations in CRAT activity have emerged as significant contributors to the pathogenesis of Leigh syndrome and related mitochondrial disorders. In this study we employed an integrated approach combining in silico docking analysis and virtual screening of chemical libraries with subsequent in vitro validation to identify small molecule modulators of the activity of the wild type (WT) CRAT and the p.
View Article and Find Full Text PDFJ Adv Res
December 2024
Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China; Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China; Department of Urology, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan 511518, Guangdong, China. Electronic address:
Introduction: Cancer-associated fibroblasts (CAFs) are a critical component of the tumor microenvironment, being implicated in enhancing tumor growth and fostering drug resistance. Nonetheless, the mechanisms underlying their function in prostate cancer (PCa) remain incompletely understood, which is essential for devising effective therapeutic strategies.
Objectives: The main objective of this study was to explore the mechanisms by which CAFs mediate PCa growth and chemoresistance.
Pharmaceutics
October 2024
R+D Department, Mesoestetic Pharma Group, 08840 Barcelona, Spain.
: Skin hyperpigmentation is a biological process that results in an excessive production of melanin and is highly regulated by several mechanisms, tyrosinase being one of the key enzymes involved. Current reported inhibitors lack clinical efficacy, show toxic side effects, have poor bioavailability, or low formulation compatibility. The aim of this study was to design a new effective tyrosinase inhibitor for topical hyperpigmentation and anti-aging treatments.
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