PMID- 32761425 OWN - NLM STAT- MEDLINE DCOM- 20201207 LR - 20240426 IS - 1432-0851 (Electronic) IS - 0340-7004 (Print) IS - 0340-7004 (Linking) VI - 69 IP - 12 DP - 2020 Dec TI - Increased Th17 activation and gut microbiota diversity are associated with pembrolizumab-triggered tuberculosis. PG - 2665-2671 LID - 10.1007/s00262-020-02687-5 [doi] AB - INTRODUCTION: A hypersensitivity response akin to immune reconstitution inflammatory syndrome (IRIS) has been proposed as a mechanism responsible for anti-PD-1 therapy-induced tuberculosis. IRIS is associated with enhanced activation of IL-17A-expressing CD4 + T cells (Th17). Gut microbiota is thought to be linked to pulmonary inflammation through the gut-lung axis. MATERIALS AND METHODS: We used ImmuCellAI to investigate the T cell population in lung cancer and tuberculosis samples. Then, we applied flow cytometry to monitor the expression levels of the Th17 cell activation marker CD38 in the peripheral blood of a patient experiencing adverse events, including tuberculosis, in response to pembrolizumab. The gut microbiome was examined by 16S rRNA sequencing to examine the alterations caused by pembrolizumab. RESULTS: The percentage of Th17 cells was increased in both lung cancer and tuberculosis. FACS analysis showed that pembrolizumab induced substantial CD38 expression in Th17 cells. The patient's fecal samples showed that the diversity of the gut microbiota was significantly increased in response to the pembrolizumab cycle. One enriched genus was Prevotella, which has previously been linked to lung inflammation and Th17 immune activation. DISCUSSION: The observed Th17 activation in our patient was consistent with a role of Th17-mediated IRIS in pembrolizumab-triggered tuberculosis. Pembrolizumab might trigger airway inflammation with a Th17 phenotype through microbiota interactions in the gut-lung axis. FAU - Zhang, Yun-Bin AU - Zhang YB AD - Shanghai Public Health Clinical Center, Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China. FAU - Liu, Shi-Jia AU - Liu SJ AD - Department of Pulmonary Disease, PLA 905 Hospital, 9585 Humin Road, Shanghai, 200235, China. FAU - Hu, Zhi-Dong AU - Hu ZD AD - Shanghai Public Health Clinical Center, Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China. FAU - Zhou, Ji-Xue AU - Zhou JX AD - Department of Pulmonary Disease, PLA 905 Hospital, 9585 Humin Road, Shanghai, 200235, China. FAU - Wang, Yin-Zhen AU - Wang YZ AD - Department of Pulmonary Disease, PLA 905 Hospital, 9585 Humin Road, Shanghai, 200235, China. FAU - Fang, Bing AU - Fang B AD - Department of Pulmonary Disease, PLA 905 Hospital, 9585 Humin Road, Shanghai, 200235, China. FAU - Wong, Ka-Wing AU - Wong KW AD - Shanghai Public Health Clinical Center, Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University, Shanghai, China. kwwong@gmail.com. FAU - Xia, Fan AU - Xia F AUID- ORCID: 0000-0003-3932-6465 AD - Department of Pulmonary Disease, PLA 905 Hospital, 9585 Humin Road, Shanghai, 200235, China. xfs2000@hotmail.com. LA - eng GR - 81371777/Natural Science Foundation of China/ GR - 81873884/Natural Science Foundation of China/ GR - 81770010/Natural Science Foundation of China/ PT - Case Reports PT - Journal Article DEP - 20200806 PL - Germany TA - Cancer Immunol Immunother JT - Cancer immunology, immunotherapy : CII JID - 8605732 RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antitubercular Agents) RN - 0 (DNA, Bacterial) RN - 0 (PDCD1 protein, human) RN - 0 (Programmed Cell Death 1 Receptor) RN - 0 (RNA, Ribosomal, 16S) RN - DPT0O3T46P (pembrolizumab) SB - IM MH - Antibodies, Monoclonal, Humanized/*adverse effects MH - Antitubercular Agents/therapeutic use MH - DNA, Bacterial/isolation & purification MH - Datasets as Topic MH - Gastrointestinal Microbiome/genetics/*immunology MH - Humans MH - Immune Reconstitution Inflammatory Syndrome/blood/chemically induced/*immunology/microbiology MH - Lung/diagnostic imaging/immunology/microbiology/pathology MH - Lung Neoplasms/blood/*drug therapy/immunology/microbiology MH - Male MH - Middle Aged MH - Mycobacterium tuberculosis/immunology/isolation & purification MH - Prevotella/genetics/immunology/isolation & purification MH - Programmed Cell Death 1 Receptor/antagonists & inhibitors/immunology MH - RNA, Ribosomal, 16S/genetics MH - Th17 Cells/drug effects/*immunology MH - Tomography, X-Ray Computed MH - Tuberculosis/chemically induced/drug therapy/*immunology/microbiology PMC - PMC11027455 OTO - NOTNLM OT - Gut microbiota diversity OT - Immune reconstitution inflammatory syndrome (IRIS) OT - Pembrolizumab OT - Th17 activation OT - Tuberculosis COIS- All authors declare no conflict of interest. EDAT- 2020/08/08 06:00 MHDA- 2020/12/15 06:00 PMCR- 2020/08/06 CRDT- 2020/08/08 06:00 PHST- 2020/02/26 00:00 [received] PHST- 2020/07/30 00:00 [accepted] PHST- 2020/08/08 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/08/08 06:00 [entrez] PHST- 2020/08/06 00:00 [pmc-release] AID - 10.1007/s00262-020-02687-5 [pii] AID - 2687 [pii] AID - 10.1007/s00262-020-02687-5 [doi] PST - ppublish SO - Cancer Immunol Immunother. 2020 Dec;69(12):2665-2671. doi: 10.1007/s00262-020-02687-5. Epub 2020 Aug 6.