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A novel association between relaxin receptor polymorphism and hematopoietic stem cell yield after mobilization

 Saeam Shin  ;  Juwon Kim  ;  Soo-Zin Kim-Wanner  ;  Halvard BoÈ nig  ;  Sung Ran Cho  ;  Sinyoung Kim  ;  Jong Rak Choi  ;  Kyung-A Lee 
 PLoS One, Vol.12(6) : e0179986, 2017 
Journal Title
 PLoS One 
Issue Date
Adult ; Case-Control Studies ; Female ; Hematopoietic Stem Cell Mobilization ; Hematopoietic Stem Cell Transplantation ; Humans ; Male ; Middle Aged ; Polymorphism, Single Nucleotide ; Receptors, G-Protein-Coupled/genetics ; Receptors, Peptide/genetics
Mobilization of hematopoietic stem cells (HSCs) from the bone marrow to the peripheral blood is a complex mechanism that involves adhesive and chemotactic interactions of HSCs as well as their bone marrow microenvironment. In addition to a number of non-genetic factors, genetic susceptibilities also contribute to the mobilization outcome. Identification of genetic factors associated with HSC yield is important to better understand the mechanism behind HSC mobilization. In the present study, we enrolled 148 Korean participants (56 healthy donors and 92 patients) undergoing HSC mobilization for allogeneic or autologous HSC transplantation. Among a total of 53 polymorphisms in 33 candidate genes, one polymorphism (rs11264422) in relaxin/insulin-like family peptide receptor 4 (RXFP4) gene was significantly associated with a higher HSC yield after mobilization in Koreans. However, in a set of 101 Europeans, no association was found between circulating CD34+ cell counts and rs11264422 genotype. Therefore, we suggest that the ethnic differences in subjects' genetic background may be related to HSC mobilization. In conclusion, the relaxin-relaxin receptor axis may play an important role in HSC mobilization. We believe that the results of the current study could provide new insights for therapies that use relaxin and HSC populations, as well as a better understanding of HSC regulation and mobilization at the molecular level.
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1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
Yonsei Authors
김신영(Kim, Sin Young) ORCID logo https://orcid.org/0000-0002-2609-8945
신새암(Shin, Saeam) ORCID logo https://orcid.org/0000-0003-1501-3923
이경아(Lee, Kyung A) ORCID logo https://orcid.org/0000-0001-5320-6705
최종락(Choi, Jong Rak) ORCID logo https://orcid.org/0000-0002-0608-2989
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