Abstract
Protein folding and clearance networks sense and respond to misfolded and aggregation-prone proteins by activating cytoprotective cell stress responses that safeguard the proteome against damage, maintain the health of the cell, and enhance lifespan. Surprisingly, cellular proteostasis undergoes a sudden and widespread failure early in Caenorhabditis elegans adulthood, with marked consequences on proteostasis functions later in life. These changes in the regulation of quality control systems, such as chaperones, the ubiquitin proteasome system and cellular stress responses, are controlled cell-nonautonomously by the proliferation of germline stem cells. Here, we review recent studies examining changes in proteostasis upon transition to adulthood and how proteostasis is modulated by reproduction onset, focusing on C. elegans. Based on these and our own findings, we propose that the regulation of quality control systems is actively remodeled at the point of transition between development and adulthood to influence the subsequent course of aging.
Keywords: Aging, Autophagy, Caenorhabditis elegans, Chaperones, Folding, Germline stem cells, Misfolding, Ubiquitin proteasome system.
Current Genomics
Title:Remodeling of Proteostasis Upon Transition to Adulthood is Linked to Reproduction Onset
Volume: 15 Issue: 2
Author(s): Nadav Shai, Netta Shemesh and Anat Ben-Zvi
Affiliation:
Keywords: Aging, Autophagy, Caenorhabditis elegans, Chaperones, Folding, Germline stem cells, Misfolding, Ubiquitin proteasome system.
Abstract: Protein folding and clearance networks sense and respond to misfolded and aggregation-prone proteins by activating cytoprotective cell stress responses that safeguard the proteome against damage, maintain the health of the cell, and enhance lifespan. Surprisingly, cellular proteostasis undergoes a sudden and widespread failure early in Caenorhabditis elegans adulthood, with marked consequences on proteostasis functions later in life. These changes in the regulation of quality control systems, such as chaperones, the ubiquitin proteasome system and cellular stress responses, are controlled cell-nonautonomously by the proliferation of germline stem cells. Here, we review recent studies examining changes in proteostasis upon transition to adulthood and how proteostasis is modulated by reproduction onset, focusing on C. elegans. Based on these and our own findings, we propose that the regulation of quality control systems is actively remodeled at the point of transition between development and adulthood to influence the subsequent course of aging.
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Cite this article as:
Shai Nadav, Shemesh Netta and Ben-Zvi Anat, Remodeling of Proteostasis Upon Transition to Adulthood is Linked to Reproduction Onset, Current Genomics 2014; 15 (2) . https://dx.doi.org/10.2174/1389202915666140221005023
DOI https://dx.doi.org/10.2174/1389202915666140221005023 |
Print ISSN 1389-2029 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5488 |
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