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Comparison of toxicity of benzene metabolite hydroquinone in hematopoietic stem cells derived from murine embryonic yolk sac and adult bone marrow.

Authors
Zhu-J; Wang-H; Yang-S; Guo-L; Li-Z; Wang-W; Wang-S; Huang-W; Wang-L; Yang-T; Ma-Q; Bi-Y
Source
PLoS One 2013 Aug; 8(8):e71153
NIOSHTIC No.
20043253
Abstract
Benzene is an occupational toxicant and an environmental pollutant that potentially causes hematotoxicity and leukemia in exposed populations. Epidemiological studies suggest an association between an increased incidence of childhood leukemia and benzene exposure during the early stages of pregnancy. However, experimental evidence supporting the association is lacking at the present time. It is believed that benzene and its metabolites target hematopoietic stem cells (HSCs) to cause toxicity and cancer in the hematopoietic system. In the current study, we compared the effects of hydroquinone (HQ), a major metabolite of benzene in humans and animals, on mouse embryonic yolk sac hematopoietic stem cells (YS-HSCs) and adult bone marrow hematopoietic stem cells (BM-HSCs). YS-HSCs and BM-HSCs were isolated and enriched, and were exposed to HQ at increasing concentrations. HQ reduced the proliferation and the differentiation and colony formation, but increased the apoptosis of both YS-HSCs and BM-HSCs. However, the cytotoxic and apoptotic effects of HQ were more apparent and reduction of colony formation by HQ was more severe in YS-HSCs than in BM-HSCs. Differences in gene expression profiles were observed in HQ-treated YS-HSCs and BM-HSCs. Cyp4f18 was induced by HQ both in YS-HSCs and BM-HSCs, whereas DNA-PKcs was induced in BM-HSCs only. The results revealed differential effects of benzene metabolites on embryonic and adult HSCs. The study established an experimental system for comparison of the hematopoietic toxicity and leukemogenicity of benzene and metabolites during mouse embryonic development and adulthood.
Keywords
Benzenes; Toxic-materials; Toxins; Environmental-pollution; Pollutants; Exposure-levels; Risk-factors; Blood-disorders; Epidemiology; Metabolites; Cancer; Humans; Men; Women; Children; Animals; Laboratory-animals
CODEN
POLNCL
CAS No.
71-43-2; 123-31-9
Publication Date
20130805
Document Type
Journal Article
Email Address
yongyib@yahoo.com.cn
Fiscal Year
2013
NTIS Accession No.
NTIS Price
Identifying No.
M102013
Issue of Publication
8
ISSN
1932-6203
NIOSH Division
HELD
Priority Area
Manufacturing
Source Name
Public Library of Science One
State
WV
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