PMID- 34510598 OWN - NLM STAT- MEDLINE DCOM- 20220203 LR - 20220203 IS - 1521-4095 (Electronic) IS - 0935-9648 (Linking) VI - 33 IP - 43 DP - 2021 Oct TI - A Novel Immunomodulator Delivery Platform Based on Bacterial Biomimetic Vesicles for Enhanced Antitumor Immunity. PG - e2103923 LID - 10.1002/adma.202103923 [doi] AB - T cell activation-induced cell death (AICD) during tumor pathogenesis is a tumor immune escape process dependent on dendritic cells (DCs). Proper immune-modulatory therapies effectively inhibit tumor-specific CD8(+) T cell exhaustion and enhance antitumor immune responses. Here, high-pressure homogenization is utilized to drive immunomodulator IL10-modified bacteria to extrude through the gap and self-assemble into bacterial biomimetic vesicles exposing IL10 (IL10-BBVs) on the surface with high efficiency. IL10-BBVs efficiently target DCs in tumor-draining lymph nodes and thus increase the interaction between IL10 on BBVs and IL10R on DCs to suppress AICD and mitigate CD8(+) T cell exhaustion specific to tumor antigens. Two subcutaneous peripheral injections of IL10-BBVs 1 week apart in tumor-bearing mice effectively increase systemic and intratumoral proportions of CD8(+) T cells to suppress tumor growth and metastasis. Tumor-specific antigen E7 is enclosed into the periplasm of IL10-BBVs (IL10-E7-BBVs) to realize concurrent actions of the immunomodulator IL10 and the tumor antigen human papillomavirus (HPV) 16E7 in lymph nodes, further enhancing the antitumor effects mediated by CD8(+) T cells. The development of this modified BBV delivery platform will expand the application of bacterial membranes and provide novel immunotherapeutic strategies for tumor treatment. CI - (c) 2021 Wiley-VCH GmbH. FAU - Hua, Liangqun AU - Hua L AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. AD - School of Life Sciences, Yunnan University, 2 Cuihu North Road, Kunming, 650091, China. FAU - Yang, Zhongqian AU - Yang Z AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Li, Weiran AU - Li W AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Zhang, Qishu AU - Zhang Q AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Ren, Zhaoling AU - Ren Z AD - The Second Affiliated Hospital of Kunming Medical University, 374 Dian Burma Avenue, Kunming, 650101, China. FAU - Ye, Chao AU - Ye C AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Zheng, Xiao AU - Zheng X AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. AD - School of Life Sciences, Yunnan University, 2 Cuihu North Road, Kunming, 650091, China. FAU - Li, Duo AU - Li D AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. AD - Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, 158 Dongsi Street, Kunming, 530112, China. FAU - Long, Qiong AU - Long Q AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Bai, Hongmei AU - Bai H AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Sun, Wenjia AU - Sun W AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Yang, Xu AU - Yang X AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Zheng, Peng AU - Zheng P AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - He, Jinrong AU - He J AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. AD - Kunming Medical University, 1168 Chunrong West Road, Kunming, 650500, China. FAU - Chen, Yongjun AU - Chen Y AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Huang, Weiwei AU - Huang W AUID- ORCID: 0000-0001-6417-3785 AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. FAU - Ma, Yanbing AU - Ma Y AD - Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, 935 Jiaoling Road, Kunming, 650118, China. LA - eng GR - 3332020063/Fundamental Research Funds for the Central Universities and PUMC Youth Fund/ GR - 2019FB045/Science and Technology Project of Yunnan Province/ GR - 202105AC160019/Science and Technology Project of Yunnan Province/ GR - 202002AA100009/Science and Technology Project of Yunnan Province/ GR - 2016FA049/Science and Technology Project of Yunnan Province/ GR - 81773270/National Natural Science Foundation of China/ GR - H-2018069/Yunnan High-level Health and Technical Personnel Project/ GR - 2020-I2M-2-014/CAMS Initiative for Innovative Medicine/ PT - Journal Article DEP - 20210912 PL - Germany TA - Adv Mater JT - Advanced materials (Deerfield Beach, Fla.) JID - 9885358 SB - IM MH - *Biomimetics OTO - NOTNLM OT - activation-induced T cell death OT - antitumor immunity OT - bacterial vesicles OT - cytokines OT - immunomodulators EDAT- 2021/09/13 06:00 MHDA- 2022/02/04 06:00 CRDT- 2021/09/12 21:25 PHST- 2021/07/06 00:00 [revised] PHST- 2021/05/24 00:00 [received] PHST- 2021/09/13 06:00 [pubmed] PHST- 2022/02/04 06:00 [medline] PHST- 2021/09/12 21:25 [entrez] AID - 10.1002/adma.202103923 [doi] PST - ppublish SO - Adv Mater. 2021 Oct;33(43):e2103923. doi: 10.1002/adma.202103923. Epub 2021 Sep 12.