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Zhou L, Zhang X, Zhou P, Li X, Xu X, Shi Q, Li D, Ju X. Effect of testosterone and hypoxia on the expansion of umbilical cord blood CD34 + cells in vitro. Exp Ther Med 2017; 14:4467-4475. [PMID: 29067121 DOI: 10.3892/etm.2017.5026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 06/15/2017] [Indexed: 12/29/2022] Open
Abstract
Successfully expanding hematopoietic stem cells (HSCs) is advantageous for clinical HSC transplantation. The present study investigated the influence of testosterone on the proliferation, antigen phenotype and expression of hematopoiesis-related genes in umbilical cord blood-derived cluster of differentiation (CD)34+ cells under normoxic or hypoxia conditions. Cord blood (CB) CD34+ cells were separated using magnetic activated cell sorting. A cytokine cocktail and feeder cells were used to stimulate the expansion of CD34+ cells under normoxic (20% O2) and hypoxic (1% O2) conditions for 7 days and testosterone was added accordingly. Cells were identified using flow cytometry and reconstruction capacity was determined using a colony-forming unit (CFU) assay. The effects of oxygen concentration and testosterone on the expression of hematopoietic-related genes, including homeobox (HOX)A9, HOXB2, HOXB4, HOXC4 and BMI-1, were measured using reverse transcription-quantitative polymerase chain reaction. The results indicated that the number of CFUs and total cells in the testosterone group increased under normoxic and hypoxic conditions compared with the corresponding control groups. Furthermore, the presence of testosterone increased the number of CFU-erythroid colonies. In liquid culture, the growth of CD34+ cells was rapid under normoxic conditions compared with under hypoxic conditions, however CD34+ cells were maintained in an undifferentiated state under hypoxic conditions. The addition of testosterone under hypoxia promoted the differentiation of CD34+ cells into CD34+CD38+CD71+ erythroid progenitor cells. Furthermore, it was determined that the expression of hematopoietic-related genes was significantly increased (P<0.05) in the hypoxia testosterone group compared with the other groups. Therefore, the results of the current study indicate that a combination of hypoxia and testosterone may be a promising cultivation condition for HSC/hemopoietic progenitor cell expansion ex vivo.
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Affiliation(s)
- Liping Zhou
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Pediatrics, The Sixth People's Hospital of Jinan, Jinan, Shandong 250200, P.R. China
| | - Xiaowei Zhang
- Department of Pediatrics, The Sixth People's Hospital of Jinan, Jinan, Shandong 250200, P.R. China
| | - Panpan Zhou
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xue Li
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xuejing Xu
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Qing Shi
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Dong Li
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xiuli Ju
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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Huang CK, Luo J, Lee SO, Chang C. Concise review: androgen receptor differential roles in stem/progenitor cells including prostate, embryonic, stromal, and hematopoietic lineages. Stem Cells 2015; 32:2299-308. [PMID: 24740898 DOI: 10.1002/stem.1722] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 03/07/2014] [Accepted: 03/12/2014] [Indexed: 01/07/2023]
Abstract
Stem/progenitor (S/P) cells are special types of cells that have the ability to generate tissues throughout their entire lifetime and play key roles in the developmental process. Androgen and the androgen receptor (AR) signals are the critical determinants in male gender development, suggesting that androgen and AR signals might modulate the behavior of S/P cells. In this review, we summarize the AR effects on the behavior of S/P cells, including self-renewal, proliferation, apoptosis, and differentiation in normal S/P cells, as well as proliferation, invasion, and self-renewal in prostate cancer S/P cells. AR plays a protective role in the oxidative stress-induced apoptosis in embryonic stem cells. AR inhibits the self-renewal of embryonic stem cells, bone marrow stromal cells, and prostate S/P cells, but promotes their differentiation except for adipogenesis. However, AR promotes the proliferation of hematopoietic S/P cells and stimulates hematopoietic lineage differentiation. In prostate cancer S/P cells, AR suppresses their self-renewal, metastasis, and invasion. Together, AR differentially influences the characteristics of normal S/P cells and prostate cancer S/P cells, and targeting AR might improve S/P cell transplantation therapy, especially in embryonic stem cells and bone marrow stromal cells.
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Affiliation(s)
- Chiung-Kuei Huang
- Departments of Pathology, Urology, Radiation Oncology, the George Whipple Lab for Cancer Research, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, New York, USA
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