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Cell Immunol. 2016 Jun-Jul;304-305:9-15. doi: 10.1016/j.cellimm.2016.04.002. Epub 2016 Apr 7.

Comparative proteomic analysis of CD34(+) cells in bone marrow between severe aplastic anemia and normal control.

Author information

1
Department of Hematology, The General Hospital of Tianjin Medical University, Tianjin 300052, PR China.
2
Department of Hematology, The General Hospital of Tianjin Medical University, Tianjin 300052, PR China. Electronic address: shaozonghong@sina.com.

Abstract

Severe aplastic anemia (SAA) is an autoimmune disease with destruction of hematopoietic cells by activated T lymphocytes. However, the precise mechanism of cytotoxicity T cells recognizing and attacking CD34(+) cells remains unclear. Here, we investigated the proteome of CD34(+) cells in SAA patients to further explore the pathogenesis of SAA. CD34(+) cells from 29 SAA patients and 20 health controls were isolated by magnetic activated cell sorting. The protein of CD34(+) cells were examined by iTRAQ labeling combination of multidimensional liquid chromatography and tandem mass spectrometry. A total of 156 differential expression proteins in CD34(+) cells were identified. Compared with health controls, 53 proteins were up-regulated and 103 proteins were down-regulated in SAA patients. Specifically, abnormal expression of proteasome subunits, histone variants, dolichyl-diphosphooligosaccharide-protein glycosyltransferase subunit (DAD1) and ATPase inhibitor, mitochondrial isoform 1 precursor(IF1) may relate to the hyperfunction of immune responses and excessive apoptosis of SAA CD34(+) cells.

KEYWORDS:

Aplastic anemia; CD34(+) cells; Proteome

PMID:
27086042
DOI:
10.1016/j.cellimm.2016.04.002
[Indexed for MEDLINE]

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