1. Mitochondrial state determines functionally divergent stem cell population in planaria.
- Author
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Mohamed Haroon M, Lakshmanan V, Sarkar SR, Lei K, Vemula PK, and Palakodeti D
- Subjects
- Animals, Cell Differentiation genetics, Membrane Potential, Mitochondrial, Planarians genetics, Pluripotent Stem Cells cytology, Pluripotent Stem Cells metabolism, RNA, Small Interfering metabolism, RNA-Seq, Staining and Labeling, Stem Cell Transplantation, Stem Cells cytology, Transcriptome genetics, Mitochondria metabolism, Planarians cytology, Planarians metabolism, Stem Cells metabolism
- Abstract
Mitochondrial state changes were shown to be critical for stem cell function. However, variation in the mitochondrial content in stem cells and the implication, if any, on differentiation is poorly understood. Here, using cellular and molecular studies, we show that the planarian pluripotent stem cells (PSCs) have low mitochondrial mass compared with their progenitors. Transplantation experiments provided functional validation that neoblasts with low mitochondrial mass are the true PSCs. Further, the mitochondrial mass correlated with OxPhos and inhibiting the transition to OxPhos dependent metabolism in cultured cells resulted in higher PSCs. In summary, we show that low mitochondrial mass is a hallmark of PSCs in planaria and provide a mechanism to isolate live, functionally active, PSCs from different cell cycle stages (G0/G1 and S, G2/M). Our study demonstrates that the change in mitochondrial metabolism, a feature of PSCs is conserved in planaria and highlights its role in organismal regeneration., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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