Cited by 399Cell death mechanisms and regulationMesenchymal stem cell researchCardiac Ischemia and Reperfusion

Hypoxia and Serum Deprivation-Induced Apoptosis in Mesenchymal Stem Cells

Zhu, Weiquan, Chen, Jinghai, Cong, Xiangfeng, Hu, Shengshou, Chen, Xi·2006·Stem Cells

Abstract

In recent years, the understanding that regeneration progresses at the level of the myocardium has placed stem cell research at the center stage in cardiology. Despite an increasing interest in cell transplant research, relatively little is known about the biochemical regulation of the stem cell itself after transplantation into an ischemic heart. We demonstrated here, using rat mesenchymal stem cells (MSCs), that cells undergo caspase-dependent apoptosis in response to hypoxia and serum deprivation (SD), which are both components of ischemia in vivo. In particular, the treated cells exhibited mitochondrial dysfunction, including cytochrome C release, loss in ΔΨm, and Bax accumulation, but in a p53-independent manner. Although the cells treated by hypoxia/SD possess the activity of caspase-8, zIEDT-fmk, a specific caspase-8 inhibitor, failed to inhibit cell apoptosis induced in our system. Taken together, our findings indicate that MSCs are sensitive to hypoxia/SD stimuli that involve changes in mitochondrial integrity and function but are potentially independent of caspase-8.

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Registry

Crossref · 10.1634/stemcells.2005-0121

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47 of 47 references verified0 citation errors · 0 not checkable

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Authors
Zhu, W., Chen, J., Cong, X., Hu, S., & Chen, X.
Affiliations
Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
Corresponding author
  • Hu, Shengshou
  • Chen, Xi
Venue
Stem Cells
Published
2005-10-27
Volume
24
Issue
2
Pages
416-425
ISSN
  • 1066-5099 (ISSN-L)
  • 1549-4918
OpenAlex
W2083123206
Cited by
399
References
47
Citations by year
2025: 9 · 2024: 7 · 2023: 10 · 2022: 21 · 2021: 9 · 2020: 18 · 2019: 11 · 2018: 31 · 2017: 28 · 2016: 22 · 2015: 31 · 2014: 33 · 2013: 38 · 2012: 35
FWCI
3.64
Type
journal article
Language
en
Open access
closed
Locations
  • Stem Cells (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China
  • National Science Fund for Distinguished Young Scholars
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
Keywords
mesenchymal stem cells, hypoxia, serum deprivation, apoptosis, caspase-8, mitochondrial dysfunction, cytochrome c release, Bax, p53-independent apoptosis, myocardial ischemia, stem cell transplantation, cardiac regeneration
MeSH terms
Animals, Mitochondria, Translocation, Genetic, Cell Hypoxia, Culture Media, Serum-Free, Apoptosis, Caspases, bcl-2-Associated X Protein, Rats, Caspase 3, Caspase 8, Mesenchymal Stem Cells

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