PMID- 31175486 OWN - NLM STAT- MEDLINE DCOM- 20200702 LR - 20200702 IS - 1573-675X (Electronic) IS - 1360-8185 (Linking) VI - 24 IP - 9-10 DP - 2019 Oct TI - ATP induces caspase-3/gasdermin E-mediated pyroptosis in NLRP3 pathway-blocked murine macrophages. PG - 703-717 LID - 10.1007/s10495-019-01551-x [doi] AB - ATP acts as a canonical activator to induce NLRP3 (NOD-like receptor family, pyrin domain containing 3) inflammasome activation in macrophages, leading to caspase-1/gasdermin D (GSDMD)-mediated pyroptosis. It remains unclear whether ATP can induce pyroptosis in macrophages when the NLRP3 pathway is blocked by pathogenic infection. In this study, we used cellular models to mimic such blockade of NLRP3 activation: bone marrow-derived macrophages (BMDMs) treated with NLRP3-specific inhibitor MCC950 and RAW264.7 cells deficient in ASC (apoptosis-associated speck-like protein containing a caspase recruitment domain) expression. The results showed that ATP treatment induced lytic cell death morphologically resembling canonical pyroptosis in both MCC950-treated BMDMs and RAW264.7 cells, but did not cause the activation of caspase-1 (by detecting caspase-1p10 and mature interleukin-1beta) and cleavage of GSDMD. Instead, both apoptotic initiator (caspase-8 and -9) and executioner (caspase-3 and -7) caspases were evidently activated and gasdermin E (GSDME) was cleaved to generate its N-terminal fragment (GSDME-NT) which executes pyroptosis. The GSDME-NT production and lytic cell death induced by ATP were diminished by caspase-3 inhibitor. In BMDMs without MCC950 treatment, ATP induced the formation of ASC specks which were co-localized with caspase-8; with MCC950 treatment, however, ATP did not induced the formation of ASC specks. In RAW264.7 cells, knockdown of GSDME by small interfering RNA attenuated ATP-induced lytic cell death and HMGB1 release into culture supernatants. Collectively, our results indicate that ATP induces pyroptosis in macrophages through the caspase-3/GSDME axis when the canonical NLRP3 pathway is blocked, suggestive of an alternative mechanism for combating against pathogen evasion. FAU - Zeng, Chen-Ying AU - Zeng CY AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Li, Chen-Guang AU - Li CG AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Shu, Jun-Xiang AU - Shu JX AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Xu, Li-Hui AU - Xu LH AD - Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Ouyang, Dong-Yun AU - Ouyang DY AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Mai, Feng-Yi AU - Mai FY AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Zeng, Qiong-Zhen AU - Zeng QZ AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Zhang, Cheng-Cheng AU - Zhang CC AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. FAU - Li, Rui-Man AU - Li RM AD - Department of Gynecology and Obstetrics, The First Affiliated Hospital of Jinan University, Guangzhou, China. hqyylrm@126.com. FAU - He, Xian-Hui AU - He XH AUID- ORCID: 0000-0001-7433-7392 AD - Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. thexh@jnu.edu.cn. LA - eng GR - 81773965/National Natural Science Foundation of China/International GR - 81673664/National Natural Science Foundation of China/International GR - 81873064/National Natural Science Foundation of China/International PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Apoptosis JT - Apoptosis : an international journal on programmed cell death JID - 9712129 RN - 0 (Gsdma protein, mouse) RN - 0 (Inflammasomes) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (Neoplasm Proteins) RN - 0 (Nlrp3 protein, mouse) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 8) RN - EC 3.4.22.- (Caspases) RN - EC 3.4.22.36 (Caspase 1) SB - IM MH - Adenosine Triphosphate/metabolism/*pharmacology MH - Animals MH - Caspase 1/metabolism MH - Caspase 3/*metabolism MH - Caspase 8/metabolism MH - Caspases/metabolism MH - Inflammasomes/metabolism MH - Macrophages/metabolism MH - Mice MH - NLR Family, Pyrin Domain-Containing 3 Protein/genetics/*metabolism MH - Neoplasm Proteins/*metabolism MH - Pyroptosis/*drug effects MH - RAW 264.7 Cells MH - RNA Interference OTO - NOTNLM OT - ATP OT - Caspase-3 OT - Gasdermin E OT - Macrophages OT - Pyroptosis EDAT- 2019/06/09 06:00 MHDA- 2020/07/03 06:00 CRDT- 2019/06/09 06:00 PHST- 2019/06/09 06:00 [pubmed] PHST- 2020/07/03 06:00 [medline] PHST- 2019/06/09 06:00 [entrez] AID - 10.1007/s10495-019-01551-x [pii] AID - 10.1007/s10495-019-01551-x [doi] PST - ppublish SO - Apoptosis. 2019 Oct;24(9-10):703-717. doi: 10.1007/s10495-019-01551-x.