PMID- 22475146 OWN - NLM STAT- MEDLINE DCOM- 20121129 LR - 20181023 IS - 1007-3418 (Print) IS - 1007-3418 (Linking) VI - 20 IP - 3 DP - 2012 Mar TI - [Histone deacetylase inhibitor MS-275 treatment alters immune molecule content and categories in hepatocarcinoma exosomes]. PG - 231-5 LID - cma.j.issn.1007-3418.2012.03 [pii] LID - 10.3760/cma.j.issn.1007-3418.2012.03.019 [doi] AB - OBJECTIVE: To investigate the effects of the histone deacetylase inhibitor, MS-275, on the immune molecule content and categories in hepatocarcinoma exosomes. METHODS: Exosomes were isolated from the human hepatocarcinoma cell lines, HepG2 and Hep3b, and purified by a combination technique of ultrafiltration centrifugation and sucrose gradient ultracentrifugation. The expressions of heat shock protein (HSP)70, human leukocyte antigen (HLA)-I, HLA-DR, cluster of differentiation (CD) 80 and NY-ESO-1 on exosomes were analyzed with immunoelectron microscopy and Western blotting before and after MS-275 treatment. Intergroup differences were statistically analyzed by the Student's paired t-test. RESULTS: MS-275 treatment of both HepG2 and Hep3b cell types significantly increased the numbers of exosomes, their total protein content, and expression of HSP70, HLA-I and CD80 (per 100 exosomes), as compared to non-treated cells (all, P less than 0.01). MS-275 was also found to induce de novo expression of HLA-DR, but had no significant effect on NY-ESO-1 expression (P more than 0.05). The findings from immunoelectron microscopy confirmed those from Western blotting. CONCLUSION: The histone deacetylase inhibitor, MS-275, can significantly alter the immune molecule content and categories in exosomes of hepatocarcinoma cells. The differential expression profile may reflect an anti-cancer immune response and represent molecular targets for novel anti-hepatoma therapeutic or preventative strategies. FAU - Li, Qiu-wen AU - Li QW AD - Department of Oncology, the First Affiliated Hospital, Chinese PLA General Hospital, Beijing 100048, China. FAU - Xiao, Wen-hua AU - Xiao WH FAU - Sarengaowa, Gaowa AU - Sarengaowa G FAU - Dong, Wei-wei AU - Dong WW FAU - Zhao, Hui-xia AU - Zhao HX FAU - Duan, Xin-yu AU - Duan XY FAU - Zhu, Jian-hua AU - Zhu JH FAU - Kang, Huan-rong AU - Kang HR FAU - Fu, Yan AU - Fu Y FAU - Hao, Yi-xin AU - Hao YX FAU - Wang, Ru-liang AU - Wang RL FAU - Song, Lin-ping AU - Song LP FAU - Ye, Ming AU - Ye M LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Gan Zang Bing Za Zhi JT - Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology JID - 9710009 RN - 0 (Antigens, Neoplasm) RN - 0 (Benzamides) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (Pyridines) RN - 1ZNY4FKK9H (entinostat) SB - IM MH - Antigens, Neoplasm/immunology/metabolism MH - Benzamides/*pharmacology MH - Carcinoma, Hepatocellular/immunology/*metabolism MH - Exosomes/immunology/*metabolism MH - Hep G2 Cells MH - Histocompatibility Antigens Class I/immunology/metabolism MH - Histone Deacetylase Inhibitors/*pharmacology MH - Humans MH - Pyridines/*pharmacology EDAT- 2012/04/06 06:00 MHDA- 2012/12/10 06:00 CRDT- 2012/04/06 06:00 PHST- 2012/04/06 06:00 [entrez] PHST- 2012/04/06 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] AID - cma.j.issn.1007-3418.2012.03 [pii] AID - 10.3760/cma.j.issn.1007-3418.2012.03.019 [doi] PST - ppublish SO - Zhonghua Gan Zang Bing Za Zhi. 2012 Mar;20(3):231-5. doi: 10.3760/cma.j.issn.1007-3418.2012.03.019.