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Hu X, Zou M, Zheng W, Zhu M, Hou Q, Gao H, Zhang X, Liu Y, Cheng Z. Bhlhe40 deficiency attenuates LPS-induced acute lung injury through preventing macrophage pyroptosis. Respir Res 2024; 25:100. [PMID: 38402153 PMCID: PMC10894472 DOI: 10.1186/s12931-024-02740-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/19/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Acute lung injury (ALI) and its more severe form, acute respiratory distress syndrome (ARDS) as common life-threatening lung diseases with high mortality rates are mostly associated with acute and severe inflammation in lungs. Recently, increasing evidence supports activated inflammation and gasdermin D (GSDMD)-mediated pyroptosis in macrophage are closely associated with ALI. Basic helix-loop-helix family member e40 (Bhlhe40) is a transcription factor that is comprehensively involved in inflammation. However, there is little experimental evidence connecting Bhlhe40 and GSDMD-driven pyroptosis. The study sought to verify the hypothesis that Bhlhe40 is required for GSDMD-mediated pyroptosis in lipopolysaccharide (LPS)-induced inflammatory injury. METHOD We performed studies using Bhlhe40-knockout (Bhlhe40 -/-) mice, small interfering RNA (siRNA) targeting Bhlhe40 and pyroptosis inhibitor disulfiram to investigate the potential roles of Bhlhe40 on LPS-induced ALI and the underlying mechanisms. RESULTS Bhlhe40 was highly expressed in total lung tissues and macrophages of LPS-induced mice. Bhlhe40-/- mice showed alleviative lung pathological injury and inflammatory response upon LPS stimulation. Meanwhile, we found that Bhlhe40 deficiency significantly suppressed GSDMD-mediated pyroptosis in macrophage in vivo and in vitro. By further mechanistic analysis, we demonstrated that Bhlhe40 deficiency inhibited GSDMD-mediated pyroptosis and subsequent ALI by repressing canonical (caspase-1-mediated) and non-canonical (caspase-11-mediated) signaling pathways in vivo and in vitro. CONCLUSION These results indicate Bhlhe40 is required for LPS-induced ALI. Bhlhe40 deficiency can inhibit GSDMD-mediated pyroptosis and therefore alleviate ALI. Targeting Bhlhe40 may be a potential therapeutic strategy for LPS-induced ALI.
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Affiliation(s)
- Xingxing Hu
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Menglin Zou
- Fourth Ward of Medical Care Center, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Weishuai Zheng
- Department of Respiratory and Critical Care Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Minghui Zhu
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Qinhui Hou
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Han Gao
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xin Zhang
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Yuan Liu
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Zhenshun Cheng
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, Hubei, China.
- Hubei Engineering Center for Infectious Disease Prevention, Control and Treatment, Wuhan, China.
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Abstract
BACKGROUND Gasdermin D (GSDMD) forms membrane pores to execute pyroptosis. But the mechanism of how cardiomyocyte pyroptosis induces cardiac remodeling in pressure overload remains unclear. We investigated the role of GSDMD-mediated pyroptosis in the pathogenesis of cardiac remodeling in pressure overload. METHODS Wild-type (WT) and cardiomyocyte-specific GSDMD-deficient (GSDMD-CKO) mice were subjected to transverse aortic constriction (TAC) to induce pressure overload. Four weeks after surgery, left ventricular structure and function were evaluated by echocardiographic, invasive hemodynamic and histological analysis. Pertinent signaling pathways related to pyroptosis, hypertrophy and fibrosis were investigated by histochemistry, RT-PCR and western blotting. The serum levels of GSDMD and IL-18 collected from healthy volunteers or hypertensive patients were measured by ELISA. RESULTS We found TAC induced cardiomyocyte pyroptosis and release of pro-inflammatory cytokines IL-18. The serum GSDMD level was significantly higher in hypertensive patients than in healthy volunteers, and induced more dramatic release of mature IL-18. GSDMD deletion remarkably mitigated TAC-induced cardiomyocyte pyroptosis. Furthermore, GSDMD deficiency in cardiomyocytes significantly reduced myocardial hypertrophy and fibrosis. The deterioration of cardiac remodeling by GSDMD-mediated pyroptosis was associated with activating JNK and p38 signaling pathways, but not ERK or Akt signaling pathway. CONCLUSION In conclusion, our results demonstrate that GSDMD serves as a key executioner of pyroptosis in cardiac remodeling induced by pressure overload. GSDMD-mediated pyroptosis activates JNK and p38 signaling pathways, and this may provide a new therapeutic target for cardiac remodeling induced by pressure overload.
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Affiliation(s)
- Jieyun You
- Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xuan Li
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Fangjie Dai
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jun Liu
- Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qi Zhang
- Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wei Guo
- Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
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Lao X, Mei X, Zou J, Xiao Q, Ning Q, Xu X, Zhang C, Ji L, Deng S, Lu B, Chen M. Pyroptosis associated with immune reconstruction failure in HIV-1- infected patients receiving antiretroviral therapy: a cross-sectional study. BMC Infect Dis 2022; 22:867. [PMID: 36411423 PMCID: PMC9677631 DOI: 10.1186/s12879-022-07818-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/27/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Highly active anti-retroviral therapy (HAART) can successfully suppress human immunodeficiency virus (HIV) viral replication and reconstruct immune function reconstruction in HIV-1-infected patients. However, about 15-30% of HIV-1-infected patients still fail to recover their CD4+ T cell counts after HAART treatment, which means immune reconstruction failure. Pyroptosis plays an important role in the death of CD4+ T cells in HIV-1- infected patients. The study aims to explore the association between the expression of pyroptosis in peripheral blood and immune function reconstruction in HIV-1- infected patients. METHODS One hundred thirty-five HIV-1-infected patients including immunological non-responders (INR) group, immunological responders (IR) group and normal immune function control (NC) group were analyzed. The expression of GSDMD and Caspase-1 in peripheral blood of HIV-1-infected patients were measured by qPCR. The concentrations of GSDMD, Caspase-1, IL-1β and IL-18 in the peripheral serum were quantified by ELISA. The associations between the expression of pyroptosis in peripheral blood and immune function reconstruction were analyzed using multivariate logistic models. RESULTS The relative expression of GSDMD mRNA and caspase-1 mRNA in peripheral blood, as well as the expression of IL-18 cytokine in the INR, were significantly higher than those in the IR and NC (P < 0.05). There was no significant difference in the expression of IL-1β cytokine (P > 0.05). Multivariate logistic analysis showed that the patients with baseline CD4+ T cell counts less than 100 cells/μL (aOR 7.051, 95% CI 1.115-44.592, P = 0.038), high level of expression of Caspase-1mRNA (aOR 2.803, 95% CI 1.065-7.377, P = 0.037) and IL-18 cytokine (aOR 10.131, 95% CI 1.616-63.505, P = 0.013) had significant poor CD4+ T cell recovery. CONCLUSIONS The baseline CD4+ T cell counts less than 100 cells/μL, high relative expression of Caspase-1 mRNA, and high expression of IL-18 cytokine are associated factors that affect the reconstruction of immune function.
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Affiliation(s)
- Xiaojie Lao
- grid.413996.00000 0004 0369 5549Department of Infectious Diseases, Beijing Ditan Hospital Capital Medical University, Beijing, 100015 China ,Guangxi Key Laboratory of AlDS Prevention and Treatment, Nanning, 530021 China ,grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Guangxi Medical University First Affiliated Hospital, Nanning, 530021 China
| | - Xinyin Mei
- Guangxi Key Laboratory of AlDS Prevention and Treatment, Nanning, 530021 China ,grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Guangxi Medical University First Affiliated Hospital, Nanning, 530021 China
| | - Jun Zou
- AIDS Clinical Treatment Center, The Fourth People’s Hospital of Nanning, Nanning, 530023 China
| | - Qing Xiao
- grid.413996.00000 0004 0369 5549Department of Infectious Diseases, Beijing Ditan Hospital Capital Medical University, Beijing, 100015 China
| | - Qiuyue Ning
- Guangxi Key Laboratory of AlDS Prevention and Treatment, Nanning, 530021 China ,grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Guangxi Medical University First Affiliated Hospital, Nanning, 530021 China
| | - Xianli Xu
- grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Wuming Hospital of Guangxi Medical University, Nanning, 530100 China
| | - Chunlan Zhang
- grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Wuming Hospital of Guangxi Medical University, Nanning, 530100 China
| | - Lei Ji
- Guangxi Key Laboratory of AlDS Prevention and Treatment, Nanning, 530021 China ,grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Wuming Hospital of Guangxi Medical University, Nanning, 530100 China
| | - Shengwei Deng
- grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Wuming Hospital of Guangxi Medical University, Nanning, 530100 China
| | - Bingyang Lu
- Department of Infectious Diseases, Mashan People’s Hospital, Nanning, 530600 China
| | - Maowei Chen
- grid.256607.00000 0004 1798 2653Department of Infectious Diseases, Wuming Hospital of Guangxi Medical University, Nanning, 530100 China
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Xia XF, Liu YC, Lu SF, Bai H, Xu SL, Sun K, Wu JH, Gu YH, Zhang HR. [Effect of electroacupuncture preconditioning on expression of Gasdermin D, Caspase-1 and IL-1β in rats with myocardial ischemia reperfusion injury]. Zhen Ci Yan Jiu 2022; 47:443-448. [PMID: 35616419 DOI: 10.13702/j.1000-0607.20210286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To observe the effect of electroacupuncture(EA) preconditioning on expression of Caspase-1, Gasdermin D(GSDMD) and interleukin-1β(IL-1β) in myocardial tissue of myocardial ischemia reperfusion injury (MIRI) rats in order to explore its underlying mechanisms in resisting MIRI. METHODS Forty male rats were randomly divided into 4 groups: normal control (normal), sham operation (sham), MIRI model and EA groups. The MIRI model was established by ligation of the left anterior descending branch of the left coronary artery for 30 min and perfusion. EA (2 Hz/100 Hz, 1 mA) was applied to bilateral "Neiguan" (PC6) for 20 min, once a day for 3 consecutive days. The echocardiography was used to analyze the left ventricular end-diastolic dimension (LVEDD), left ventricular end-systolic dimension (LVESD) and left ventricular ejection fraction (LVEF, by using Teichholz formula) 4 h after modeling. The myocardial TTC staining was used to observe the proportion of the infarct area, and Western blot was used to detect the expression levels of GSDMD, Caspase-1, IL-1β proteins in the myocardium. RESULTS Compared with the normal group, the immunoactivity of GSDMD was increased in the sham group (P<0.05). Compared with the sham group, the LVEF was significantly decreased (P<0.000 1), while the myocardial infarction area, immunoactivity of GSDMD, and the expression levels of Caspase-1, GSDMD and IL-1β proteins were considerably increased in the model group (P<0.000 1, P<0.001). In comparison with the model group, the decreased ejection fraction and the increased myocardial infarction area, and Caspase-1, GSDMD and IL-1β expression were reversed in the EA group (P<0.001, P<0.000 1, P<0.01). CONCLUSION EA preconditioning may ameliorate myocardial injury in MIRI rats which may be associated with its function in down-regulating the expression of myocardial Caspase-1 protein to reduce cardiomyocyte pyroptosis.
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Affiliation(s)
- Xue-Feng Xia
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yu-Chen Liu
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Sheng-Feng Lu
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China; Key Laboratory for Resear-ching Combination of Acupuncture and Drugs of Chinese Ministry of Education, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hua Bai
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Sen-Lei Xu
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ke Sun
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jia-Hong Wu
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yi-Huang Gu
- College of Acupuncture and Massage, Health and Rehabilitation College, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hong-Ru Zhang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
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