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TCF4-Targeting miR-124 is Differentially Expressed amongst Dendritic Cell Subsets.

 Sun Murray Han  ;  Hye Young Na  ;  Onju Ham  ;  Wanho Choi  ;  Moah Sohn  ;  Seul Hye Ryu  ;  Hyunju In  ;  Ki-Chul Hwang  ;  Chae Gyu Park 
 IMMUNE NETWORK, Vol.16(1) : 61-74, 2016 
Journal Title
Issue Date
Dendritic cells ; MicroRNAs ; Posttranscriptional Gene Silencing ; TCF4
Dendritic cells (DCs) are professional antigen-presenting cells that sample their environment and present antigens to naïve T lymphocytes for the subsequent antigen-specific immune responses. DCs exist in a range of distinct subpopulations including plasmacytoid DCs (pDCs) and classical DCs (cDCs), with the latter consisting of the cDC1 and cDC2 lineages. Although the roles of DC-specific transcription factors across the DC subsets have become understood, the posttranscriptional mechanisms that regulate DC development are yet to be elucidated. MicroRNAs (miRNAs) are pivotal posttranscriptional regulators of gene expression in a myriad of biological processes, but their contribution to the immune system is just beginning to surface. In this study, our in-house probe collection was screened to identify miRNAs possibly involved in DC development and function by targeting the transcripts of relevant mouse transcription factors. Examination of DC subsets from the culture of mouse bone marrow with Flt3 ligand identified high expression of miR-124 which was able to target the transcript of TCF4, a transcription factor critical for the development and homeostasis of pDCs. Further expression profiling of mouse DC subsets isolated from in vitro culture as well as via ex vivo purification demonstrated that miR-124 was outstandingly expressed in CD24(+) cDC1 cells compared to in pDCs and CD172α(+) cDC2 cells. These results imply that miR-124 is likely involved in the processes of DC subset development by posttranscriptional regulation of a transcription factor(s).
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1. College of Medicine (의과대학) > BioMedical Science Institute (의생명과학부) > 1. Journal Papers
Yonsei Authors
Na, Hye Young(나혜영) ORCID logo https://orcid.org/0000-0002-2886-9926
Park, Chae Gyu(박채규) ORCID logo https://orcid.org/0000-0003-1906-1308
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