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ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis

Fat storage is one of the important strategies employed in regulating energy homeostasis. Impaired lipid storage causes metabolic disorders in both mammals and Drosophila. In this study, we report CG9911, the Drosophila homolog of ERp44 (endoplasmic reticulum protein 44) plays a role in regulating a...

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Detalles Bibliográficos
Autores principales: Bi, Youkun, Chang, Yan, Liu, Qun, Mao, Yang, Zhai, Kui, Zhou, Yuanli, Jiao, Renjie, Ji, Guangju
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Impact Journals 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221293/
https://www.ncbi.nlm.nih.gov/pubmed/34031268
http://dx.doi.org/10.18632/aging.203063
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author Bi, Youkun
Chang, Yan
Liu, Qun
Mao, Yang
Zhai, Kui
Zhou, Yuanli
Jiao, Renjie
Ji, Guangju
author_facet Bi, Youkun
Chang, Yan
Liu, Qun
Mao, Yang
Zhai, Kui
Zhou, Yuanli
Jiao, Renjie
Ji, Guangju
author_sort Bi, Youkun
collection PubMed
description Fat storage is one of the important strategies employed in regulating energy homeostasis. Impaired lipid storage causes metabolic disorders in both mammals and Drosophila. In this study, we report CG9911, the Drosophila homolog of ERp44 (endoplasmic reticulum protein 44) plays a role in regulating adipose tissue fat storage. Using the CRISPR/Cas9 system, we generated a CG9911 mutant line deleting 5 bp of the coding sequence. The mutant flies exhibit phenotypes of lower bodyweight, fewer lipid droplets, reduced TAG level and increased expression of lipolysis related genes. The increased lipolysis phenotype is enhanced in the presence of ER stresses and suppressed by a reduction of the ER Ca(2+). Moreover, loss of CG9911 per se results in a decrease of ER Ca(2+) in the fat body. Together, our results reveal a novel function of CG9911 in promoting fat storage via regulating ER Ca(2+) signal in Drosophila.
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spelling pubmed-82212932021-06-26 ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis Bi, Youkun Chang, Yan Liu, Qun Mao, Yang Zhai, Kui Zhou, Yuanli Jiao, Renjie Ji, Guangju Aging (Albany NY) Research Paper Fat storage is one of the important strategies employed in regulating energy homeostasis. Impaired lipid storage causes metabolic disorders in both mammals and Drosophila. In this study, we report CG9911, the Drosophila homolog of ERp44 (endoplasmic reticulum protein 44) plays a role in regulating adipose tissue fat storage. Using the CRISPR/Cas9 system, we generated a CG9911 mutant line deleting 5 bp of the coding sequence. The mutant flies exhibit phenotypes of lower bodyweight, fewer lipid droplets, reduced TAG level and increased expression of lipolysis related genes. The increased lipolysis phenotype is enhanced in the presence of ER stresses and suppressed by a reduction of the ER Ca(2+). Moreover, loss of CG9911 per se results in a decrease of ER Ca(2+) in the fat body. Together, our results reveal a novel function of CG9911 in promoting fat storage via regulating ER Ca(2+) signal in Drosophila. Impact Journals 2021-05-24 /pmc/articles/PMC8221293/ /pubmed/34031268 http://dx.doi.org/10.18632/aging.203063 Text en Copyright: © 2021 Bi et al. https://creativecommons.org/licenses/by/3.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/3.0/) (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Paper
Bi, Youkun
Chang, Yan
Liu, Qun
Mao, Yang
Zhai, Kui
Zhou, Yuanli
Jiao, Renjie
Ji, Guangju
ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title_full ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title_fullStr ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title_full_unstemmed ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title_short ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca(2+) homeostasis
title_sort erp44/cg9911 promotes fat storage in drosophila adipocytes by regulating er ca(2+) homeostasis
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221293/
https://www.ncbi.nlm.nih.gov/pubmed/34031268
http://dx.doi.org/10.18632/aging.203063
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