CISD2 maintains cellular homeostasis

Zhao Qing Shen, Yi Long Huang, Yuan Chi Teng, Tai Wen Wang, Cheng Heng Kao, Chi Hsiao Yeh*, Ting Fen Tsai*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

36 Scopus citations

Abstract

CDGSH Iron Sulfur Domain 2 (CISD2) is the causative gene for the disease Wolfram syndrome 2 (WFS2; MIM 604928), which is an autosomal recessive disorder showing metabolic and neurodegenerative manifestations. CISD2 protein can be localized on the endoplasmic reticulum (ER), outer mitochondrial membrane (OMM) and mitochondria-associated membrane (MAM). CISD2 plays a crucial role in the regulation of cytosolic Ca2+ homeostasis, ER integrity and mitochondrial function. Here we summarize the most updated publications and discuss the central role of CISD2 in maintaining cellular homeostasis. This review mainly focuses on the following topics. Firstly, that CISD2 has been recognized as a prolongevity gene and the level of CISD2 is a key determinant of lifespan and healthspan. In mice, Cisd2 deficiency shortens lifespan and accelerates aging. Conversely, a persistently high level of Cisd2 promotes longevity. Intriguingly, exercise stimulates Cisd2 gene expression and thus, the beneficial effects offered by exercise may be partly related to Cisd2 activation. Secondly, that Cisd2 is down-regulated in a variety of tissues and organs during natural aging. Three potential mechanisms that may mediate the age-dependent decrease of Cisd2, via regulating at different levels of gene expression, are discussed. Thirdly, the relationship between CISD2 and cell survival, as well as the potential mechanisms underlying the cell death control, are discussed. Finally we discuss that, in cancers, CISD2 may functions as a double-edged sword, either suppressing or promoting cancer development. This review highlights the importance of the CISD2 in aging and age-related diseases and identifies the urgent need for the translation of available genetic evidence into pharmaceutic interventions in order to alleviate age-related disorders and extend a healthy lifespan in humans.

Original languageEnglish
Article number118954
JournalBiochimica et Biophysica Acta - Molecular Cell Research
Volume1868
Issue number4
DOIs
StatePublished - Apr 2021

Keywords

  • Aging
  • CISD2
  • Ca homeostasis
  • Longevity
  • Mitochondria
  • Mitochondria-associated membrane (MAM)
  • Wolfram syndrome 2

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