PMID- 31895698 OWN - NLM STAT- MEDLINE DCOM- 20201230 LR - 20201230 IS - 1558-8238 (Electronic) IS - 0021-9738 (Print) IS - 0021-9738 (Linking) VI - 130 IP - 4 DP - 2020 Apr 1 TI - Bruton tyrosine kinase deficiency augments NLRP3 inflammasome activation and causes IL-1beta-mediated colitis. PG - 1793-1807 LID - 128322 [pii] LID - 10.1172/JCI128322 [doi] AB - Bruton tyrosine kinase (BTK) is present in a wide variety of cells and may thus have important non-B cell functions. Here, we explored the function of this kinase in macrophages with studies of its regulation of the NLR family, pyrin domain-containing 3 (NLRP3) inflammasome. We found that bone marrow-derived macrophages (BMDMs) from BTK-deficient mice or monocytes from patients with X-linked agammaglobulinemia (XLA) exhibited increased NLRP3 inflammasome activity; this was also the case for BMDMs exposed to low doses of BTK inhibitors such as ibrutinib and for monocytes from patients with chronic lymphocytic leukemia being treated with ibrutinib. In mechanistic studies, we found that BTK bound to NLRP3 during the priming phase of inflammasome activation and, in doing so, inhibited LPS- and nigericin-induced assembly of the NLRP3 inflammasome during the activation phase of inflammasome activation. This inhibitory effect was caused by BTK inhibition of protein phosphatase 2A-mediated (PP2A-mediated) dephosphorylation of Ser5 in the pyrin domain of NLRP3. Finally, we show that BTK-deficient mice were subject to severe experimental colitis and that such colitis was normalized by administration of anti-IL-beta or anakinra, an inhibitor of IL-1beta signaling. Together, these studies strongly suggest that BTK functions as a physiologic inhibitor of NLRP3 inflammasome activation and explain why patients with XLA are prone to develop Crohn's disease. FAU - Mao, Liming AU - Mao L AD - Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA. FAU - Kitani, Atsushi AU - Kitani A AD - Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA. FAU - Hiejima, Eitaro AU - Hiejima E AD - Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA. FAU - Montgomery-Recht, Kim AU - Montgomery-Recht K AD - Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research Inc., National Cancer Institute (NCI) Campus at Frederick, Frederick, Maryland, USA. FAU - Zhou, Wenchang AU - Zhou W AD - Theoretical Molecular Biophysics Laboratory, National Heart, Lung and Blood Institute (NHLBI), and. FAU - Fuss, Ivan AU - Fuss I AD - Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA. FAU - Wiestner, Adrian AU - Wiestner A AD - Lymphoid Malignancies Section, Hematology Branch, NHLBI, NIH, Bethesda, Maryland, USA. FAU - Strober, Warren AU - Strober W AD - Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA. LA - eng GR - HHSN261200800001E/CA/NCI NIH HHS/United States GR - ZIA AI000354/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural PL - United States TA - J Clin Invest JT - The Journal of clinical investigation JID - 7802877 RN - 0 (IL1B protein, human) RN - 0 (IL1B protein, mouse) RN - 0 (Inflammasomes) RN - 0 (Interleukin-1beta) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (NLRP3 protein, human) RN - 0 (Nlrp3 protein, mouse) RN - EC 2.7.10.2 (Agammaglobulinaemia Tyrosine Kinase) RN - EC 2.7.10.2 (BTK protein, human) RN - EC 2.7.10.2 (Btk protein, mouse) RN - Bruton type agammaglobulinemia SB - IM MH - Adolescent MH - Adult MH - Agammaglobulinaemia Tyrosine Kinase/*deficiency/metabolism MH - Agammaglobulinemia/enzymology/genetics/pathology MH - Aged MH - Aged, 80 and over MH - Animals MH - Child MH - *Crohn Disease/enzymology/genetics/pathology MH - Female MH - Genetic Diseases, X-Linked/enzymology/genetics/pathology MH - Humans MH - Inflammasomes/genetics/*metabolism MH - Interleukin-1beta/genetics/*metabolism MH - Male MH - Mice MH - Mice, Knockout MH - NLR Family, Pyrin Domain-Containing 3 Protein/genetics/*metabolism PMC - PMC7108929 OTO - NOTNLM OT - Gastroenterology OT - Inflammatory bowel disease OT - Innate immunity COIS- Conflict of interest: AW receives research funding from Pharmacyclics, an AbbVie Company. EDAT- 2020/01/03 06:00 MHDA- 2020/12/31 06:00 PMCR- 2020/07/01 CRDT- 2020/01/03 06:00 PHST- 2019/03/25 00:00 [received] PHST- 2019/12/23 00:00 [accepted] PHST- 2020/01/03 06:00 [pubmed] PHST- 2020/12/31 06:00 [medline] PHST- 2020/01/03 06:00 [entrez] PHST- 2020/07/01 00:00 [pmc-release] AID - 128322 [pii] AID - 10.1172/JCI128322 [doi] PST - ppublish SO - J Clin Invest. 2020 Apr 1;130(4):1793-1807. doi: 10.1172/JCI128322.