Cited by 62Hematopoietic Stem Cell TransplantationEffects of Radiation ExposureReproductive Biology and Fertility

An acute negative bystander effect of γ-irradiated recipients on transplanted hematopoietic stem cells.

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Shen, Hongmei, Yu, Hui, Liang, Paulina H., Cheng, Haizi, XuFeng, Richard, Yuan, Youzhong, Zhang, Peng, Smith, Clayton A. +1 more·2012·Blood

Abstract

Ultimate success of hematopoietic stem cell transplantation (HSCT) depends not only on donor HSCs themselves but also on the host environment. Total body irradiation is a component in various host conditioning regimens for HSCT. It is known that ionizing radiation exerts "bystander effects" on nontargeted cells and that HSCs transplanted into irradiated recipients undergo proliferative exhaustion. However, whether irradiated recipients pose a proliferation-independent bystander effect on transplanted HSCs is unclear. In this study, we found that irradiated mouse recipients significantly impaired the long-term repopulating ability of transplanted mouse HSCs shortly (∼ 17 hours) after exposure to irradiated hosts and before the cells began to divide. There was an increase of acute cell death associated with accelerated proliferation of the bystander hematopoietic cells. This effect was marked by dramatic down-regulation of c-Kit, apparently because of elevated reactive oxygen species. Administration of an antioxidant chemical, N-acetylcysteine, or ectopically overexpressing a reactive oxygen species scavenging enzyme, catalase, improved the function of transplanted HSCs in irradiated hosts. Together, this study provides evidence for an acute negative, yet proliferation-independent, bystander effect of irradiated recipients on transplanted HSCs, thereby having implications for HSCT in both experimental and clinical scenarios in which total body irradiation is involved.

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Authors
Shen, H., Yu, H., Liang, P. H., Cheng, H., XuFeng, R., Yuan, Y., Zhang, P., Smith, C. A., & Cheng, T.
Affiliations
  • University of Pittsburgh (US)
  • Departments of Radiation Oncology and
  • UPMC Hillman Cancer Center (US)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
Corresponding author
  • Shen, Hongmei
  • Yu, Hui
Venue
Blood
Published
2012-04-12
Volume
119
Issue
15
Pages
3629-3637
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2006848133
Cited by
62
References
52
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 10 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 5 · 2014: 5 · 2013: 5
FWCI
3.19
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (30825017, 81090410)
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01HL070561, HL070561)
  • National Institute of Allergy and Infectious Diseases (AI080424, R01AI080424)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
Keywords
hematopoietic stem cells, gamma irradiation, total body irradiation, host conditioning, CD117, reactive oxygen species, N-acetylcysteine, catalase, antioxidants
MeSH terms
Acute Disease, Animals, Cells, Cultured, Hematopoietic Stem Cells, Humans, Mice, Inbred C57BL, Models, Biological, Radiation Injuries, Experimental, Whole-Body Irradiation, Hematopoietic Stem Cell Transplantation, Transplantation Conditioning, Mice, Congenic, Bystander Effect, Mice, HEK293 Cells

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