Mitochondria are important sub-cellular organelles in eukaryotes. Defects in mitochondrial system lead to a variety of disease. Therefore, detailed knowledge of mitochondrial proteome is vital to understand mitochondrial system and their function. Sequence databases contain large number of mitochondrial proteins but they are mostly not annotated. In this study, we developed a support vector machine approach, SubmitoLoc, to predict mitochondrial sub cellular locations of proteins based on various sequence derived properties. We evaluated the predictor using 10-fold cross validation. Our method achieved 88.56 % accuracy using all features. Average sensitivity and specificity for four-subclass prediction is 85.37% and 87.25% respectively. High prediction accuracy suggests that SubmitoLoc will be useful for researchers studying mitochondrial biology and drug discovery.
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http://dx.doi.org/10.6026/97320630015863 | DOI Listing |
J Cell Sci
March 2025
Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.
Mitochondria perform diverse functions, such as producing ATP through oxidative phosphorylation, synthesizing macromolecule precursors, maintaining redox balance, and many others. Given this diversity of functions, we and others have hypothesized that cells maintain specialized subpopulations of mitochondria. To begin addressing this hypothesis, we developed a new dual-purification system to isolate subpopulations of mitochondria for chemical and biochemical analyses.
View Article and Find Full Text PDFStem Cells Dev
March 2025
Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
Orchestrated changes in cell arrangements and cell-to-cell contacts are susceptible to cellular stressors during central nervous system development. Effects of mitochondrial complex I inhibition on cell-to-cell contacts have been studied in vascular and intestinal structures; however, its effects on developing neuronal cells are largely unknown. We investigated the effects of the classical mitochondrial stressor and complex I inhibitor, rotenone, on the architecture of neural rosettes-radially organized neuronal progenitor cells (NPCs)-differentiated from human-induced pluripotent stem cells.
View Article and Find Full Text PDFFront Cardiovasc Med
February 2025
Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China.
Introduction: The molecular mechanisms underlying cardioprotection against doxorubicin (DOX)-induced myocardial injury are poorly understood. Histone deacetylase 2 (HDAC2) plays a significant role in oxidative stress, apoptosis, and mitochondrial dysfunction and is implicated in many human diseases, This study investigated the relationship between HDAC2 expression and DOX-induced myocardial injury using the rat model of DOX-induced cardiotoxicity and experiments with the H9c2 cardiomyocytes.
Methods: The rat model of DOX-induced myocardial injury was established by administering DOX via intraperitoneal injections.
Front Cell Dev Biol
February 2025
School of Exercise and Health Sciences, Tianjin University of Sport, Tianjin, China.
Enhanced Drp1 activity mediates excessive mitochondrial fission, contributing to the onset and progression of various chronic diseases, including neurodegenerative, cardiovascular, and metabolic disorders. Studies indicate that exercise mitigates mitochondrial dysfunction by modulating Drp1-related signaling targets, thereby inhibiting Drp1 activity and reducing excessive mitochondrial fission. This, in turn, enhances mitochondrial function and cellular metabolism.
View Article and Find Full Text PDFFront Pharmacol
February 2025
Department of Core Facility, The First Hospital of Jilin University, Changchun, Jilin, China.
Drug resistance is a prevalent challenge in clinical disease treatment, often leading to disease relapse and poor prognosis. Therefore, it is crucial to gain a deeper understanding of the molecular mechanisms underlying drug resistance and to develop targeted strategies for its effective prevention and management. Mitochondria, as vital energy-producing organelles within cells, have been recognized as key regulators of drug sensitivity.
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