Issue Information
The FEBS journal,
05/2021, Volume:
288, Issue:
9
Journal Article
Peer reviewed
Cover IllustrationIn this issue, Friederike‐Nora Vögtle addresses open questions and perspectives in the field of mitochondrial stress responses (see pages 2856‐2869).
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BFBNIB, DOBA, FZAB, GIS, IJS, IZUM, KILJ, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBMB, SIK, UILJ, UKNU, UL, UM, UPUK
Mitochondria are metabolic organelles that are essential for mammalian life, but the dynamics of mitochondrial metabolism within mammalian tissues in vivo remains incompletely understood. While ...whole-tissue metabolite profiling has been useful for studying metabolism in vivo, such an approach lacks resolution at the cellular and subcellular level. In vivo methods for interrogating organellar metabolites in specific cell types within mammalian tissues have been limited. To address this, we built on prior work in which we exploited a mitochondrially localized 3XHA epitope tag (MITO-Tag) for the fast isolation of mitochondria from cultured cells to generate MITO-Tag Mice. Affording spatiotemporal control over MITO-Tag expression, these transgenic animals enable the rapid, cell-type-specific immunoisolation of mitochondria from tissues, which we verified using a combination of proteomic and metabolomic approaches. Using MITO-Tag Mice and targeted and untargeted metabolite profiling, we identified changes during fasted and refed conditions in a diverse array of mitochondrial metabolites in hepatocytes and found metabolites that behaved differently at the mitochondrial versus whole-tissue level. MITO-Tag Mice should have utility for studying mitochondrial physiology, and our strategy should be generally applicable for studying other mammalian organelles in specific cell types in vivo.
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Periyannan, V, Annamalai, V, Veerasamy, V. Syringic acid suppresses oral squamous cell carcinoma SCC131 cell proliferation via modulation of mitochondria‐mediated apoptosis signaling pathways. J ...Biochem Mol Toxicol . 2020; 34:e22586. https://doi.org/10.1002/jbt.22586 . The above article, published online on July 25, 2020 in Wiley Online Library ( wileyonlinelibrary.com ), has been retracted by agreement between the journal Editor‐in‐Chief Hari Bhat and Wiley Periodicals, LLC. The retraction has been agreed due to concerns with data and because the article was submitted and approved for publication by Velu Periyannan without consent in any form by the named coauthor Vinothkumar Veerasamy.
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FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SBCE, SBMB, UL, UM, UPUK
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