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논문 기본 정보

자료유형
학술저널
저자정보
Young-Kwan Lee (Seoul National University College of Medicine) Ji-Min Ju (Seoul National University College of Medicine) Woo-Jeong Shon (Seoul National University College of Human Ecology) Sehwa Oh (Seoul National University College of Medicine) Chang-Ki Min (The Catholic University of Korea) Myung-Soo Kang (Seoul National University College of Medicine) Dong-Mi Shin (Seoul National University College of Human Ecology) Eun Young Choi (Seoul National University College of Medicine)
저널정보
대한면역학회 Immune Network Immune Network Vol.18 No.6
발행연도
2018.12
수록면
36 - 58 (23page)

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초록· 키워드

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Graft-versus-host disease (GVHD), a life-threatening complication after bone marrow transplantation (BMT), is induced by activation of alloreactive donor T cells. Our previous study demonstrated that transplantation of myeloid differentiation factor 88 (MyD88)-deficient knockout (KO) bone marrow (BM) resulted in aggravation of GVHD. Here, to understand the cellular mechanism, we performed longitudinal in vivo imaging and flow cytometric analyses followed by transcriptome and functional examination of donor MyD88-KO BM progenies in GVHD hosts, using a major histocompatibility complex-matched but minor histocompatibility antigen-mismatched C57BL/6→BALB.B model. In GVHD hosts with MyD88-KO BMT, donor BM-derived CD11b<SUP>+</SUP>Gr-1<SUP>+</SUP> cells were found to undergo cell death, a fate significantly different from the explosive expansion shown by the wild type (WT) counterparts, and also from the moderate expansion of the WT or MyD88-KO BM-derived cells in non-GVHD hosts. It was also revealed that MyD88-KO CD11b<SUP>+</SUP>Gr-1<SUP>+</SUP> cells preferred differentiation into CD11c<SUP>+</SUP> dendritic cells (DCs) to expansion as myeloid-derived suppressor cells in GVHD hosts or in high inflammatory in vitro conditions. These CD11c<SUP>+</SUP> DCs comprised the majority of MyD88-KO CD11b<SUP>+</SUP>Gr-1<SUP>+</SUP> apoptotic cells in GVHD hosts. Their ability to crosspresent alloantigens of host origin contributed to the enhancement of T cell alloreactivity, causing GVHD aggravation and eventually death through the killing function of activated T cells. These results provide insights into the roles of MyD88 in myelopoiesis of donor BM and the protective effects in GVHD hosts, helpful information for development of a strategy to control GVHD.

목차

ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2019-517-000338071