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논문 기본 정보

자료유형
학술저널
저자정보
강태흥 (건국대학교 의생명과학연구원) Jung Hwa Park (School of Medicine Konkuk University) Donghyeok Shin (School of Medicine Konkuk University) Hyungon Choi (School of Medicine Konkuk University) Jeenam Kim (School of Medicine Konkuk University) 이명철 (건국대학교병원)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제16권 제5호
발행연도
2019.1
수록면
539 - 548 (10page)

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BACKGROUND: Brown adipocytes have thermogenic characteristics in neonates and elicit anti-inflammatory responses. We postulated that thermogenic brown adipocytes produce distinctive intercellular effects in a hypobaric state. The purpose of this study is to analyze the correlation between brown adipocyte and regulatory T cell (Treg) expression under intermittent hypobaric conditions. METHODS: Brown and white adipocytes were harvested from the interscapular and flank areas of C57BL6 mice, respectively. Adipocytes were cultured with syngeneic splenocytes after isolation and differentiation. Intermittent hypobaric conditions were generated using cyclic negative pressure application for 48 h in both groups of adipocytes. Expression levels of Tregs (CD4 ? CD25 ? Foxp3 ? T cells), cytokines [tumor necrosis factor-a (TNF-a) and interleukin- 10 (IL-10), and the programmed death-ligand 1 (PD-L1)] co-inhibitory ligand were examined. RESULTS: Splenocytes, cultured with brown and white adipocytes, exhibited comparable Treg expression in a normobaric state. Under hypobaric conditions, brown adipocytes maintained a subset of Tregs. However, a decrease in Tregs was found in the white adipocyte group. TNF-a levels increased in both groups under hypobaric conditions. In the brown adipocyte group, anti-inflammatory IL-10 expression increased significantly; meanwhile, IL-10 expression decreased in the white adipocyte group. PD-L1 levels increased more significantly in brown adipocytes than in white adipocytes under hypobaric conditions. CONCLUSION: Both brown and white adipocytes support Treg expression when they are cultured with splenocytes. Of note, brown adipocytes maintained Treg expression in intermittent hypobaric conditions. Anti-inflammatory cytokines and co-inhibitory ligands mediate the immunomodulatory effects of brown adipocytes under altered atmospheric conditions. Brown adipocytes showed the feasibility as a source of adjustment in physical stresses.

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