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Guo R, Wei Y, Du Y, Liu L, Zhang H, Ren R, Sun R, Zhang T, Xiong X, Zhao L, Wang H, Guo X, Zhu X. EX527, a sirtuins 1 inhibitor, sensitizes T-cell leukemia to death receptor-mediated apoptosis by downregulating cellular FLICE inhibitory protein. Cancer Biol Ther 2024; 25:2402588. [PMID: 39286953 PMCID: PMC11409494 DOI: 10.1080/15384047.2024.2402588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/22/2024] [Accepted: 09/05/2024] [Indexed: 09/19/2024] Open
Abstract
Death receptor-mediated extrinsic apoptosis system had been developed as a promising therapeutic strategy in clinical oncology, such as TRAIL therapy. However, multiple studies have demonstrated that TRAIL resistance is the biggest problem for disappointing clinical trials despite preclinical success. Targeting cellular FLICE inhibitory protein (cFLIP) is one strategy of combinatorial therapies to overcome resistance to DR-mediated apoptosis due to its negative regulator of extrinsic apoptosis. E × 527 (Selisistat) is a specific inhibitor of SIRT1 activity with safe and well tolerance in clinical trials. Here, we show that E × 527 could strengthen significantly activation of rhFasL-mediated apoptotic signaling pathway and increased apoptotic rate of T leukemia cells with high expression of cFLIP. Mechanically, Inhibition of SIRT1 by E × 527 increased polyubiquitination level of cFLIP via increasing acetylation of Ku70, which could promote proteosomal degradation of cFLIP protein. It implied that combinatorial therapies of E × 527 plus TRAIL may have a potential as a novel clinical application for TRAIL-resistant hematologic malignancies.
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Affiliation(s)
- Rongqi Guo
- Department of Clinical Laboratory, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Yihui Wei
- Henan Red Cross Blood Center, Xinxiang, China
| | - Yating Du
- Department of Clinical Laboratory, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Luyue Liu
- Departments of Laboratory Medicine, Zhoukou Central Hospital, Zhoukou, China
| | - Haoqi Zhang
- Department of Microbiology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Ruiying Ren
- Department of Clinical Laboratory, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Ruili Sun
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Tingting Zhang
- Department of Microbiology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xiwen Xiong
- School of Forensic Medicine, Xinxiang Medical University, Xinxiang, China
| | - Lijun Zhao
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Hongfei Wang
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
| | - Xiaofang Guo
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
- Department of Microbiology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xiaofei Zhu
- Department of Clinical Laboratory, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Xinxiang Key Laboratory of Tumor Microenvironment and Immunotherapy, Xinxiang Medical University, Xinxiang, China
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2
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Gharib E, Robichaud GA. From Crypts to Cancer: A Holistic Perspective on Colorectal Carcinogenesis and Therapeutic Strategies. Int J Mol Sci 2024; 25:9463. [PMID: 39273409 PMCID: PMC11395697 DOI: 10.3390/ijms25179463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/19/2024] [Accepted: 08/24/2024] [Indexed: 09/15/2024] Open
Abstract
Colorectal cancer (CRC) represents a significant global health burden, with high incidence and mortality rates worldwide. Recent progress in research highlights the distinct clinical and molecular characteristics of colon versus rectal cancers, underscoring tumor location's importance in treatment approaches. This article provides a comprehensive review of our current understanding of CRC epidemiology, risk factors, molecular pathogenesis, and management strategies. We also present the intricate cellular architecture of colonic crypts and their roles in intestinal homeostasis. Colorectal carcinogenesis multistep processes are also described, covering the conventional adenoma-carcinoma sequence, alternative serrated pathways, and the influential Vogelstein model, which proposes sequential APC, KRAS, and TP53 alterations as drivers. The consensus molecular CRC subtypes (CMS1-CMS4) are examined, shedding light on disease heterogeneity and personalized therapy implications.
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Affiliation(s)
- Ehsan Gharib
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
- Atlantic Cancer Research Institute, Moncton, NB E1C 8X3, Canada
| | - Gilles A Robichaud
- Département de Chimie et Biochimie, Université de Moncton, Moncton, NB E1A 3E9, Canada
- Atlantic Cancer Research Institute, Moncton, NB E1C 8X3, Canada
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3
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Yadav S, El Hamra R, Alturki NA, Ariana A, Bhan A, Hurley K, Gaestel M, Blackshear PJ, Blais A, Sad S. Regulation of Zfp36 by ISGF3 and MK2 restricts the expression of inflammatory cytokines during necroptosis stimulation. Cell Death Dis 2024; 15:574. [PMID: 39117638 PMCID: PMC11310327 DOI: 10.1038/s41419-024-06964-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 07/29/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
Necrosome activation following TLR- or cytokine receptor-signaling results in cell death by necroptosis which is characterized by the rupture of cell membranes and the consequent release of intracellular contents to the extracellular milieu. While necroptosis exacerbates various inflammatory diseases, the mechanisms through which the inflammatory responses are regulated are not clear. We show that the necrosome activation of macrophages results in an upregulation of various pathways, including the mitogen-activated protein kinase (MAPK) cascade, which results in an elevation of the inflammatory response and consequent expression of several cytokines and chemokines. Programming for this upregulation of inflammatory response occurs during the early phase of necrosome activation and proceeds independently of cell death but depends on the activation of the receptor-interacting protein kinase-1 (RipK1). Interestingly, necrosome activation also results in an upregulation of IFNβ, which in turn exerts an inhibitory effect on the maintenance of inflammatory response through the repression of MAPK-signaling and an upregulation of Zfp36. Activation of the interferon-induced gene factor-3 (ISGF3) results in the expression of ZFP36 (TTP), which induces the post-transcriptional degradation of mRNAs of various inflammatory cytokines and chemokines through the recognition of AU-rich elements in their 3'UTR. Furthermore, ZFP-36 inhibits IFNβ-, but not TNFα- induced necroptosis. Overall, these results reveal the molecular mechanism through which IFNβ, a pro-inflammatory cytokine, induces the expression of ZFP-36, which in turn inhibits necroptosis and halts the maintenance of the inflammatory response.
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Affiliation(s)
- Sahil Yadav
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Rayan El Hamra
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Norah A Alturki
- Clinical Laboratory Science Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ardeshir Ariana
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Avni Bhan
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Kate Hurley
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Matthias Gaestel
- Institute of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Perry J Blackshear
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, North Carolina, United States of America
| | - Alexandre Blais
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Ottawa Institute of Systems Biology, Ottawa, ON, Canada
- University of Ottawa, Centre for Infection Immunity and Inflammation, Ottawa, ON, Canada
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
| | - Subash Sad
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
- University of Ottawa, Centre for Infection Immunity and Inflammation, Ottawa, ON, Canada.
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4
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König C, Ivanisenko NV, Hillert-Richter LK, Namjoshi D, Natu K, Espe J, Reinhold D, Kolchanov NA, Ivanisenko VA, Kähne T, Bose K, Lavrik IN. Targeting type I DED interactions at the DED filament serves as a sensitive switch for cell fate decisions. Cell Chem Biol 2024:S2451-9456(24)00274-5. [PMID: 39053461 DOI: 10.1016/j.chembiol.2024.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/22/2024] [Accepted: 06/24/2024] [Indexed: 07/27/2024]
Abstract
Activation of procaspase-8 in the death effector domain (DED) filaments of the death-inducing signaling complex (DISC) is a key step in apoptosis. In this study, a rationally designed cell-penetrating peptide, DEDid, was engineered to mimic the h2b helical region of procaspase-8-DED2 containing a highly conservative FL motif. Furthermore, mutations were introduced into the DEDid binding site of the procaspase-8 type I interface. Additionally, our data suggest that DEDid targets other type I DED interactions such as those of FADD. Both approaches of blocking type I DED interactions inhibited CD95L-induced DISC assembly, caspase activation and apoptosis. We showed that inhibition of procaspase-8 type I interactions by mutations not only diminished procaspase-8 recruitment to the DISC but also destabilized the FADD core of DED filaments. Taken together, this study offers insights to develop strategies to target DED proteins, which may be considered in diseases associated with cell death and inflammation.
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Affiliation(s)
- Corinna König
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems, Otto von Guericke University, Magdeburg, Germany
| | - Nikita V Ivanisenko
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems, Otto von Guericke University, Magdeburg, Germany
| | - Laura K Hillert-Richter
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems, Otto von Guericke University, Magdeburg, Germany
| | - Deepti Namjoshi
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India
| | - Kalyani Natu
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India; Homi Bhabha National Institute, BARC Training School Complex, Mumbai, India
| | - Johannes Espe
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems, Otto von Guericke University, Magdeburg, Germany
| | - Dirk Reinhold
- Institute of Molecular and Clinical immunology, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Nikolai A Kolchanov
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia; Kurchatov Genomics Center, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Vladimir A Ivanisenko
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia; Kurchatov Genomics Center, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia; State Novosibirsk University, Novosibirsk, Russia
| | - Thilo Kähne
- Institute of Experimental and Internal Medicine (iEIM), Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Kakoli Bose
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India; Homi Bhabha National Institute, BARC Training School Complex, Mumbai, India
| | - Inna N Lavrik
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems, Otto von Guericke University, Magdeburg, Germany.
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Zhang S, Li N, Wu S, Xie T, Chen Q, Wu J, Zeng S, Zhu L, Bai S, Zha H, Tian W, Wu N, Zou X, Fang S, Luo C, Shi M, Sun C, Shu Y, Luo H. c-FLIP facilitates ZIKV infection by mediating caspase-8/3-dependent apoptosis. PLoS Pathog 2024; 20:e1012408. [PMID: 39038037 PMCID: PMC11293698 DOI: 10.1371/journal.ppat.1012408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 08/01/2024] [Accepted: 07/09/2024] [Indexed: 07/24/2024] Open
Abstract
c-FLIP functions as a dual regulator of apoptosis and inflammation, yet its implications in Zika virus (ZIKV) infection remain partially understood, especially in the context of ZIKV-induced congenital Zika syndrome (CZS) where both apoptosis and inflammation play pivotal roles. Our findings demonstrate that c-FLIP promotes ZIKV infection in placental cells and myeloid-derived macrophages, involving inflammation and caspase-8/3-mediated apoptosis. Moreover, our observations reveal that c-FLIP augments ZIKV infection in multiple tissues, including blood cell, spleen, uterus, testis, and the brain of mice. Notably, the partial deficiency of c-FLIP provides protection to embryos against ZIKV-induced CZS, accompanied by a reduction in caspase-3-mediated apoptosis. Additionally, we have found a distinctive parental effect of c-FLIP influencing ZIKV replication in fetal heads. In summary, our study reveals the critical role of c-FLIP as a positive regulator in caspase-8/3-mediated apoptosis during ZIKV infection, significantly contributing to the development of CZS.
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Affiliation(s)
- Shengze Zhang
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Nina Li
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Shu Wu
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Ting Xie
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Qiqi Chen
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Jiani Wu
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Shike Zeng
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Lin Zhu
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Shaohui Bai
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Haolu Zha
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Weijian Tian
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Nan Wu
- Shenzhen Nanshan Center for Disease Control and Prevention, Shenzhen, P.R. China
| | - Xuan Zou
- Shenzhen Center for Disease Control and Prevention, Shenzhen, P.R. China
| | - Shisong Fang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, P.R. China
| | - Chuming Luo
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
| | - Mang Shi
- The Centre for Infection and Immunity Studies, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Caijun Sun
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, P.R. China
| | - Yuelong Shu
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, P.R. China
- Key Laboratory of Pathogen Infection Prevention and Control (MOE), State Key Laboratory of Respiratory Health and Multimorbidity, National Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Huanle Luo
- School of Public Health (Shenzhen), Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, Shenzhen Campus of Sun Yat-sen University, Shenzhen, P.R. China
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou, P.R. China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, P.R. China
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Ergün S, Aslan S, Demir D, Kayaoğlu S, Saydam M, Keleş Y, Kolcuoğlu D, Taşkurt Hekim N, Güneş S. Beyond Death: Unmasking the Intricacies of Apoptosis Escape. Mol Diagn Ther 2024; 28:403-423. [PMID: 38890247 PMCID: PMC11211167 DOI: 10.1007/s40291-024-00718-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2024] [Indexed: 06/20/2024]
Abstract
Apoptosis, or programmed cell death, maintains tissue homeostasis by eliminating damaged or unnecessary cells. However, cells can evade this process, contributing to conditions such as cancer. Escape mechanisms include anoikis, mitochondrial DNA depletion, cellular FLICE inhibitory protein (c-FLIP), endosomal sorting complexes required for transport (ESCRT), mitotic slippage, anastasis, and blebbishield formation. Anoikis, triggered by cell detachment from the extracellular matrix, is pivotal in cancer research due to its role in cellular survival and metastasis. Mitochondrial DNA depletion, associated with cellular dysfunction and diseases such as breast and prostate cancer, links to apoptosis resistance. The c-FLIP protein family, notably CFLAR, regulates cell death processes as a truncated caspase-8 form. The ESCRT complex aids apoptosis evasion by repairing intracellular damage through increased Ca2+ levels. Antimitotic agents induce mitotic arrest in cancer treatment but can lead to mitotic slippage and tetraploid cell formation. Anastasis allows cells to resist apoptosis induced by various triggers. Blebbishield formation suppresses apoptosis indirectly in cancer stem cells by transforming apoptotic cells into blebbishields. In conclusion, the future of apoptosis research offers exciting possibilities for innovative therapeutic approaches, enhanced diagnostic tools, and a deeper understanding of the complex biological processes that govern cell fate. Collaborative efforts across disciplines, including molecular biology, genetics, immunology, and bioinformatics, will be essential to realize these prospects and improve patient outcomes in diverse disease contexts.
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Affiliation(s)
- Sercan Ergün
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey.
| | - Senanur Aslan
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
| | - Dilbeste Demir
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Sümeyye Kayaoğlu
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Mevsim Saydam
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Yeda Keleş
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Damla Kolcuoğlu
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Neslihan Taşkurt Hekim
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
| | - Sezgin Güneş
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
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7
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Natu K, Dutta S, Bose K. cFLIP - An interacting partner and a novel substrate for pro-apoptotic serine protease HtrA2. Biochem Biophys Rep 2024; 38:101682. [PMID: 38511187 PMCID: PMC10950699 DOI: 10.1016/j.bbrep.2024.101682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/22/2024] Open
Abstract
Background HtrA2, a pro-apoptotic protease, plays a crucial role in apoptosis by cleaving inhibitory and anti-apoptotic proteins by translocating from mitochondria to the cytosol. Prior studies in ischemic cells have indicated that cytosolic HtrA2 triggers cFLIP degradation, plausibly through direct interaction. In this study, we have characterized the cFLIP protein, validated its interaction with HtrA2, and demonstrated that cFLIP is also a substrate of HtrA2. Methods We have identified the probable cleavage sites of cFLIP through gel-based assays and mass spectrometric analysis of the cleaved fragments. Results Our findings shed light on a key protein-protein interaction involving pro-apoptotic HtrA2, confirming cFLIP as its interacting partner and substrate. Conclusion Understanding the nuances of HtrA2's interaction with cFLIP (a decoy protein of the initiator procaspase-8 in the extrinsic apoptotic pathway) and deciphering the cFLIP's mode of cleavage, would provide an excellent alternative to modulate the pathway for therapeutic benefits toward diseases like ischemia and cancer.
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Affiliation(s)
- Kalyani Natu
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, 410210, India
- Homi Bhabha National Institute, BARC Training School Complex, Mumbai, 400094, India
| | - Shubhankar Dutta
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, 410210, India
- Homi Bhabha National Institute, BARC Training School Complex, Mumbai, 400094, India
| | - Kakoli Bose
- Integrated Biophysics and Structural Biology Lab, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, 410210, India
- Homi Bhabha National Institute, BARC Training School Complex, Mumbai, 400094, India
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8
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Yang X, Zeng Q, İnam MG, İnam O, Lin CS, Tezel G. cFLIP in the molecular regulation of astroglia-driven neuroinflammation in experimental glaucoma. J Neuroinflammation 2024; 21:145. [PMID: 38824526 PMCID: PMC11143607 DOI: 10.1186/s12974-024-03141-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 05/24/2024] [Indexed: 06/03/2024] Open
Abstract
BACKGROUND Recent experimental studies of neuroinflammation in glaucoma pointed to cFLIP as a molecular switch for cell fate decisions, mainly regulating cell type-specific caspase-8 functions in cell death and inflammation. This study aimed to determine the importance of cFLIP for regulating astroglia-driven neuroinflammation in experimental glaucoma by analyzing the outcomes of astroglia-targeted transgenic deletion of cFLIP or cFLIPL. METHODS Glaucoma was modeled by anterior chamber microbead injections to induce ocular hypertension in mouse lines with or without conditional deletion of cFLIP or cFLIPL in astroglia. Morphological analysis of astroglia responses assessed quantitative parameters in retinal whole mounts immunolabeled for GFAP and inflammatory molecules or assayed for TUNEL. The molecular analysis included 36-plexed immunoassays of the retina and optic nerve cytokines and chemokines, NanoString-based profiling of inflammation-related gene expression, and Western blot analysis of selected proteins in freshly isolated samples of astroglia. RESULTS Immunoassays and immunolabeling of retina and optic nerve tissues presented reduced production of various proinflammatory cytokines, including TNFα, in GFAP/cFLIP and GFAP/cFLIPL relative to controls at 12 weeks of ocular hypertension with no detectable alteration in TUNEL. Besides presenting a similar trend of the proinflammatory versus anti-inflammatory molecules displayed by immunoassays, NanoString-based molecular profiling detected downregulated NF-κB/RelA and upregulated RelB expression of astroglia in ocular hypertensive samples of GFAP/cFLIP compared to ocular hypertensive controls. Analysis of protein expression also revealed decreased phospho-RelA and increased phospho-RelB in parallel with an increase in caspase-8 cleavage products. CONCLUSIONS A prominent response limiting neuroinflammation in ocular hypertensive eyes with cFLIP-deletion in astroglia values the role of cFLIP in the molecular regulation of glia-driven neuroinflammation during glaucomatous neurodegeneration. The molecular responses accompanying the lessening of neurodegenerative inflammation also seem to maintain astroglia survival despite increased caspase-8 cleavage with cFLIP deletion. A transcriptional autoregulatory response, dampening RelA but boosting RelB for selective expression of NF-κB target genes, might reinforce cell survival in cFLIP-deleted astroglia.
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Affiliation(s)
- Xiangjun Yang
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Qun Zeng
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Maide Gözde İnam
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Onur İnam
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Chyuan-Sheng Lin
- Department of Pathology & Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Gülgün Tezel
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.
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9
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Bibo-Verdugo B, Salvesen G. Evolution of Caspases and the Invention of Pyroptosis. Int J Mol Sci 2024; 25:5270. [PMID: 38791309 PMCID: PMC11121540 DOI: 10.3390/ijms25105270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
The protein scaffold that includes the caspases is ancient and found in all domains of life. However, the stringent specificity that defines the caspase biologic function is relatively recent and found only in multicellular animals. During the radiation of the Chordata, members of the caspase family adopted roles in immunity, events coinciding with the development of substrates that define the modern innate immune response. This review focuses on the switch from the non-inflammatory cellular demise of apoptosis to the highly inflammatory innate response driven by distinct members of the caspase family, and the interplay between these two regulated cell death pathways.
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Affiliation(s)
- Betsaida Bibo-Verdugo
- Instituto Tecnológico de La Paz, Boulevard Forjadores de Baja California Sur 4720, La Paz 23080, Mexico;
| | - Guy Salvesen
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
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10
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Yang CY, Lien CI, Tseng YC, Tu YF, Kulczyk AW, Lu YC, Wang YT, Su TW, Hsu LC, Lo YC, Lin SC. Deciphering DED assembly mechanisms in FADD-procaspase-8-cFLIP complexes regulating apoptosis. Nat Commun 2024; 15:3791. [PMID: 38710704 PMCID: PMC11074299 DOI: 10.1038/s41467-024-47990-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/17/2024] [Indexed: 05/08/2024] Open
Abstract
Fas-associated protein with death domain (FADD), procaspase-8, and cellular FLICE-inhibitory proteins (cFLIP) assemble through death-effector domains (DEDs), directing death receptor signaling towards cell survival or apoptosis. Understanding their three-dimensional regulatory mechanism has been limited by the absence of atomic coordinates for their ternary DED complex. By employing X-ray crystallography and cryogenic electron microscopy (cryo-EM), we present the atomic coordinates of human FADD-procaspase-8-cFLIP complexes, revealing structural insights into these critical interactions. These structures illustrate how FADD and cFLIP orchestrate the assembly of caspase-8-containing complexes and offer mechanistic explanations for their role in promoting or inhibiting apoptotic and necroptotic signaling. A helical procaspase-8-cFLIP hetero-double layer in the complex appears to promote limited caspase-8 activation for cell survival. Our structure-guided mutagenesis supports the role of the triple-FADD complex in caspase-8 activation and in regulating receptor-interacting protein kinase 1 (RIPK1). These results propose a unified mechanism for DED assembly and procaspase-8 activation in the regulation of apoptotic and necroptotic signaling across various cellular pathways involved in development, innate immunity, and disease.
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Grants
- AS-TP-107-L16, AS-TP-107-L16-1, AS-102-TP-B14 and AS-102-TP-B14-2 Academia Sinica
- AS-TP-107-L16-2 and AS-102-TP-B14-1 Academia Sinica
- AS-TP-107-L16-3 Academia Sinica
- MoST 107-2320-B-001-018-, 108-2311-B-001-018-, 109-2311-B-001-016-, and 110-2311-B-001-015- Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MoST 107-2320-B-006-062-MY3, and 111-2311-B-006-005-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MoST 108-2320-B-002-020-MY3, 111-2320-B-002-048-MY3, and 112-2326-B-002-007- Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
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Affiliation(s)
- Chao-Yu Yang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chia-I Lien
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan
| | - Yi-Chun Tseng
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Yi-Fan Tu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Arkadiusz W Kulczyk
- Institute for Quantitative Biomedicine, Rutgers University, Department of Biochemistry and Microbiology, Rutgers University, Piscataway, NJ, 08854, USA
| | - Yen-Chen Lu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Yin-Ting Wang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Tsung-Wei Su
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Li-Chung Hsu
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan.
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan.
| | - Yu-Chih Lo
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan.
| | - Su-Chang Lin
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan.
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11
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Boccellato C, Rehm M. TRAIL-induced apoptosis and proteasomal activity - Mechanisms, signalling and interplay. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119688. [PMID: 38368955 DOI: 10.1016/j.bbamcr.2024.119688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/01/2024] [Accepted: 02/10/2024] [Indexed: 02/20/2024]
Abstract
Programmed cell death, in particular apoptosis, is essential during development and tissue homeostasis, and also is the primary strategy to induce cancer cell death by cytotoxic therapies. Precision therapeutics targeting TRAIL death receptors are being evaluated as novel anti-cancer agents, while in parallel highly specific proteasome inhibitors have gained approval as drugs. TRAIL-dependent signalling and proteasomal control of cellular proteostasis are intricate processes, and their interplay can be exploited to enhance therapeutic killing of cancer cells in combination therapies. This review provides detailed insights into the complex signalling of TRAIL-induced pathways and the activities of the proteasome. It explores their core mechanisms of action, pharmaceutical druggability, and describes how their interplay can be strategically leveraged to enhance cell death responses in cancer cells. Offering this comprehensive and timely overview will allow to navigate the complexity of the processes governing cell death mechanisms in TRAIL- and proteasome inhibitor-based treatment conditions.
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Affiliation(s)
- Chiara Boccellato
- University of Stuttgart, Institute of Cell Biology and Immunology, Stuttgart 70569, Germany.
| | - Markus Rehm
- University of Stuttgart, Institute of Cell Biology and Immunology, Stuttgart 70569, Germany; University of Stuttgart, Stuttgart Research Center Systems Biology, Stuttgart 70569, Germany.
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12
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Chan KI, Zhang S, Li G, Xu Y, Cui L, Wang Y, Su H, Tan W, Zhong Z. MYC Oncogene: A Druggable Target for Treating Cancers with Natural Products. Aging Dis 2024; 15:640-697. [PMID: 37450923 PMCID: PMC10917530 DOI: 10.14336/ad.2023.0520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/20/2023] [Indexed: 07/18/2023] Open
Abstract
Various diseases, including cancers, age-associated disorders, and acute liver failure, have been linked to the oncogene, MYC. Animal testing and clinical trials have shown that sustained tumor volume reduction can be achieved when MYC is inactivated, and different combinations of therapeutic agents including MYC inhibitors are currently being developed. In this review, we first provide a summary of the multiple biological functions of the MYC oncoprotein in cancer treatment, highlighting that the equilibrium points of the MYC/MAX, MIZ1/MYC/MAX, and MAD (MNT)/MAX complexes have further potential in cancer treatment that could be used to restrain MYC oncogene expression and its functions in tumorigenesis. We also discuss the multifunctional capacity of MYC in various cellular cancer processes, including its influences on immune response, metabolism, cell cycle, apoptosis, autophagy, pyroptosis, metastasis, angiogenesis, multidrug resistance, and intestinal flora. Moreover, we summarize the MYC therapy patent landscape and emphasize the potential of MYC as a druggable target, using herbal medicine modulators. Finally, we describe pending challenges and future perspectives in biomedical research, involving the development of therapeutic approaches to modulate MYC or its targeted genes. Patients with cancers driven by MYC signaling may benefit from therapies targeting these pathways, which could delay cancerous growth and recover antitumor immune responses.
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Affiliation(s)
- Ka Iong Chan
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Siyuan Zhang
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Guodong Li
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Yida Xu
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Liao Cui
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang 524000, China
| | - Yitao Wang
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Huanxing Su
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
| | - Wen Tan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Zhangfeng Zhong
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China
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13
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Maji A, Paul A, Sarkar A, Nahar S, Bhowmik R, Samanta A, Nahata P, Ghosh B, Karmakar S, Kumar Maity T. Significance of TRAIL/Apo-2 ligand and its death receptors in apoptosis and necroptosis signalling: Implications for cancer-targeted therapeutics. Biochem Pharmacol 2024; 221:116041. [PMID: 38316367 DOI: 10.1016/j.bcp.2024.116041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/04/2024] [Accepted: 01/30/2024] [Indexed: 02/07/2024]
Abstract
The human immune defensesystem routinely expresses the tumour necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL), which is the most prevalent element for antitumor immunity. TRAIL associates with its death receptors (DRs), DR4 (TRAIL-R1), and DR5 (TRAIL-R2), in cancer cells to initiate the intracellular apoptosis cascade. Accordingly, numerous academic institutions and pharmaceutical companies havetried to exploreTRAIL's capacity to kill tumourcells by producing recombinant versions of it (rhTRAIL) or TRAIL receptor agonists (TRAs) [monoclonal antibody (mAb), synthetic and natural compounds, etc.] and molecules that sensitize TRAIL signalling pathway for therapeutic applications. Recently, several microRNAs (miRs) have been found to activate or inhibit death receptor signalling. Therefore, pharmacological regulation of these miRs may activate or resensitize the TRAIL DRs signal, and this is a novel approach for developing anticancer therapeutics. In this article, we will discuss TRAIL and its receptors and molecular pathways by which it induces various cell death events. We will unravel potential innovative applications of TRAIL-based therapeutics, and other investigated therapeutics targeting TRAIL-DRs and summarize the current preclinical pharmacological studies and clinical trials. Moreover, we will also emphasizea few situations where future efforts may be addressed to modulate the TRAIL signalling pathway.
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Affiliation(s)
- Avik Maji
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
| | - Abhik Paul
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
| | - Arnab Sarkar
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India; Bioequivalence Study Centre, Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata-700032, India.
| | - Sourin Nahar
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
| | - Rudranil Bhowmik
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India; Bioequivalence Study Centre, Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata-700032, India.
| | - Ajeya Samanta
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
| | - Pankaj Nahata
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
| | - Balaram Ghosh
- Epigenetic Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad-500078, India.
| | - Sanmoy Karmakar
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India; Bioequivalence Study Centre, Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata-700032, India.
| | - Tapan Kumar Maity
- Department of Pharmaceutical Technology, Jadavpur University, West Bengal, Kolkata 700 032, India.
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14
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Abstract
Apoptosis, necroptosis, and pyroptosis are genetically programmed cell death mechanisms that eliminate obsolete, damaged, infected, and self-reactive cells. Apoptosis fragments cells in a manner that limits immune cell activation, whereas the lytic death programs of necroptosis and pyroptosis release proinflammatory intracellular contents. Apoptosis fine-tunes tissue architecture during mammalian development, promotes tissue homeostasis, and is crucial for averting cancer and autoimmunity. All three cell death mechanisms are deployed to thwart the spread of pathogens. Disabling regulators of cell death signaling in mice has revealed how excessive cell death can fuel acute or chronic inflammation. Here we review strategies for modulating cell death in the context of disease. For example, BCL-2 inhibitor venetoclax, an inducer of apoptosis, is approved for the treatment of certain hematologic malignancies. By contrast, inhibition of RIPK1, NLRP3, GSDMD, or NINJ1 to limit proinflammatory cell death and/or the release of large proinflammatory molecules from dying cells may benefit patients with inflammatory diseases.
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Affiliation(s)
- Nobuhiko Kayagaki
- Physiological Chemistry Department, Genentech, South San Francisco, California, USA;
| | - Joshua D Webster
- Pathology Department, Genentech, South San Francisco, California, USA
| | - Kim Newton
- Physiological Chemistry Department, Genentech, South San Francisco, California, USA;
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15
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Yaacoub K, Pedeux R, Lafite P, Jarry U, Aci-Sèche S, Bonnet P, Daniellou R, Guillaudeux T. The Identification of New c-FLIP Inhibitors for Restoring Apoptosis in TRAIL-Resistant Cancer Cells. Curr Issues Mol Biol 2024; 46:710-728. [PMID: 38248348 PMCID: PMC10814526 DOI: 10.3390/cimb46010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
The catalytically inactive caspase-8-homologous protein, c-FLIP, is a potent antiapoptotic protein highly expressed in various types of cancers. c-FLIP competes with caspase-8 for binding to the adaptor protein FADD (Fas-Associated Death Domain) following death receptors' (DRs) activation via the ligands of the TNF-R family. As a consequence, the extrinsic apoptotic signaling pathway involving DRs is inhibited. The inhibition of c-FLIP activity in tumor cells might enhance DR-mediated apoptosis and overcome immune and anticancer drug resistance. Based on an in silico approach, the aim of this work was to identify new small inhibitory molecules able to bind selectively to c-FLIP and block its anti-apoptotic activity. Using a homology 3D model of c-FLIP, an in silico screening of 1880 compounds from the NCI database (National Cancer Institute) was performed. Nine molecules were selected for in vitro assays, based on their binding affinity to c-FLIP and their high selectivity compared to caspase-8. These molecules selectively bind to the Death Effector Domain 2 (DED2) of c-FLIP. We have tested in vitro the inhibitory effect of these nine molecules using the human lung cancer cell line H1703, overexpressing c-FLIP. Our results showed that six of these newly identified compounds efficiently prevent FADD/c-FLIP interactions in a molecular pull-down assay, as well as in a DISC immunoprecipitation assay. The overexpression of c-FLIP in H1703 prevents TRAIL-mediated apoptosis; however, a combination of TRAIL with these selected molecules significantly restored TRAIL-induced cell death by rescuing caspase cleavage and activation. Altogether, our findings indicate that new inhibitory chemical molecules efficiently prevent c-FLIP recruitment into the DISC complex, thus restoring the caspase-8-dependent apoptotic cascade. These results pave the way to design new c-FLIP inhibitory molecules that may serve as anticancer agents in tumors overexpressing c-FLIP.
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Affiliation(s)
- Katherine Yaacoub
- CNRS, INSERM, BIOSIT UAR 3480, US-S018, Rennes University, F-35000 Rennes, France; (K.Y.); (U.J.)
- INSERM, OSS (Oncogenesis Stress Signaling), UMR-S1242, CLCC Eugène Marquis, Rennes University, F-35000 Rennes, France;
| | - Rémy Pedeux
- INSERM, OSS (Oncogenesis Stress Signaling), UMR-S1242, CLCC Eugène Marquis, Rennes University, F-35000 Rennes, France;
| | - Pierre Lafite
- CNRS, ICOA, UMR 7311, Orléans University, F-45067 Orléans, France; (P.L.); (S.A.-S.); (P.B.); (R.D.)
| | - Ulrich Jarry
- CNRS, INSERM, BIOSIT UAR 3480, US-S018, Rennes University, F-35000 Rennes, France; (K.Y.); (U.J.)
| | - Samia Aci-Sèche
- CNRS, ICOA, UMR 7311, Orléans University, F-45067 Orléans, France; (P.L.); (S.A.-S.); (P.B.); (R.D.)
| | - Pascal Bonnet
- CNRS, ICOA, UMR 7311, Orléans University, F-45067 Orléans, France; (P.L.); (S.A.-S.); (P.B.); (R.D.)
| | - Richard Daniellou
- CNRS, ICOA, UMR 7311, Orléans University, F-45067 Orléans, France; (P.L.); (S.A.-S.); (P.B.); (R.D.)
| | - Thierry Guillaudeux
- CNRS, INSERM, BIOSIT UAR 3480, US-S018, Rennes University, F-35000 Rennes, France; (K.Y.); (U.J.)
- INSERM, OSS (Oncogenesis Stress Signaling), UMR-S1242, CLCC Eugène Marquis, Rennes University, F-35000 Rennes, France;
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16
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Mei X, Zhang Y, Wang S, Wang H, Chen R, Ma K, Yang Y, Jiang P, Feng Z, Zhang C, Zhang Z. Necroptosis in Pneumonia: Therapeutic Strategies and Future Perspectives. Viruses 2024; 16:94. [PMID: 38257794 PMCID: PMC10818625 DOI: 10.3390/v16010094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Pneumonia remains a major global health challenge, necessitating the development of effective therapeutic approaches. Recently, necroptosis, a regulated form of cell death, has garnered attention in the fields of pharmacology and immunology for its role in the pathogenesis of pneumonia. Characterized by cell death and inflammatory responses, necroptosis is a key mechanism contributing to tissue damage and immune dysregulation in various diseases, including pneumonia. This review comprehensively analyzes the role of necroptosis in pneumonia and explores potential pharmacological interventions targeting this cell death pathway. Moreover, we highlight the intricate interplay between necroptosis and immune responses in pneumonia, revealing a bidirectional relationship between necrotic cell death and inflammatory signaling. Importantly, we assess current therapeutic strategies modulating necroptosis, encompassing synthetic inhibitors, natural products, and other drugs targeting key components of the programmed necrosis pathway. The article also discusses challenges and future directions in targeting programmed necrosis for pneumonia treatment, proposing novel therapeutic strategies that combine antibiotics with necroptosis inhibitors. This review underscores the importance of understanding necroptosis in pneumonia and highlights the potential of pharmacological interventions to mitigate tissue damage and restore immune homeostasis in this devastating respiratory infection.
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Affiliation(s)
- Xiuzhen Mei
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
| | - Yuchen Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
| | - Shu Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
| | - Hui Wang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Rong Chen
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
| | - Ke Ma
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yue Yang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Ping Jiang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhixin Feng
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Chao Zhang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zhenzhen Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou 225300, China
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17
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Zhang D, Wu H, Liu D, Ye M, Li Y, Zhou G, Yang Q, Liu Y, Li Y. cFLIP L alleviates myocardial ischemia-reperfusion injury by regulating pyroptosis. Cell Biol Int 2024; 48:60-75. [PMID: 37750485 DOI: 10.1002/cbin.12091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 08/04/2023] [Accepted: 09/13/2023] [Indexed: 09/27/2023]
Abstract
Alleviating myocardial ischemia-reperfusion injury (MIRI) plays a critical role in the prognosis and improvement of cardiac function following acute myocardial infarction. Pyroptosis is a newly identified form of cell death that has been implicated in the regulation of MIRI. In our study, H9c2 cells and SD rats were transfected using a recombinant adenovirus vector carrying cFLIPL , and the transfection was conducted for 3 days. Subsequently, H9c2 cells were subjected to 4 h of hypoxia followed by 12 h of reoxygenation to simulate an in vitro ischemia-reperfusion model. SD rats underwent 30 min of ischemia followed by 2 h of reperfusion to establish an MIRI model. Our findings revealed a notable decrease in cFLIPL expression in response to ischemia/reperfusion (I/R) and hypoxia/reoxygenation (H/R) injuries. Overexpression of cFLIPL can inhibit pyroptosis, reducing myocardial infarction area in vivo, and enhancing H9c2 cell viability in vitro. I/R and H/R injuries induced the upregulation of ASC, cleaved Caspase 1, NLRP3, GSDMD-N, IL-1β, and IL-18 proteins, promoting cell apoptosis. Our research indicates that cFLIPL may suppress pyroptosis by strategically binding with Caspase 1, inhibiting the release of inflammatory cytokines and preventing cell membrane rupture. Therefore, cFLIPL could potentially serve as a promising target for alleviating MIRI by suppressing the pyroptotic pathway.
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Affiliation(s)
- Dong Zhang
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Hui Wu
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Di Liu
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Ming Ye
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Yunzhao Li
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Gang Zhou
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - QingZhuo Yang
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - YanFang Liu
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
| | - Yi Li
- Institute of Cardiovascular Disease, China Three Gorges University, Yichang, China
- Department of Cardiology, Yichang Central People's Hospital, Yichang, China
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18
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Davidovich P, Higgins CA, Najda Z, Longley DB, Martin SJ. cFLIP L acts as a suppressor of TRAIL- and Fas-initiated inflammation by inhibiting assembly of caspase-8/FADD/RIPK1 NF-κB-activating complexes. Cell Rep 2023; 42:113476. [PMID: 37988267 DOI: 10.1016/j.celrep.2023.113476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 08/16/2023] [Accepted: 11/03/2023] [Indexed: 11/23/2023] Open
Abstract
TRAIL and FasL are potent inducers of apoptosis but can also promote inflammation through assembly of cytoplasmic caspase-8/FADD/RIPK1 (FADDosome) complexes, wherein caspase-8 acts as a scaffold to drive FADD/RIPK1-mediated nuclear factor κB (NF-κB) activation. cFLIP is also recruited to FADDosomes and restricts caspase-8 activity and apoptosis, but whether cFLIP also regulates death receptor-initiated inflammation is unclear. Here, we show that silencing or deletion of cFLIP leads to robustly enhanced Fas-, TRAIL-, or TLR3-induced inflammatory cytokine production, which can be uncoupled from the effects of cFLIP on caspase-8 activation and apoptosis. Mechanistically, cFLIPL suppresses Fas- or TRAIL-initiated NF-κB activation through inhibiting the assembly of caspase-8/FADD/RIPK1 FADDosome complexes, due to the low affinity of cFLIPL for FADD. Consequently, increased cFLIPL occupancy of FADDosomes diminishes recruitment of FADD/RIPK1 to caspase-8, thereby suppressing NF-κB activation and inflammatory cytokine production downstream. Thus, cFLIP acts as a dual suppressor of apoptosis and inflammation via distinct modes of action.
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Affiliation(s)
- Pavel Davidovich
- Molecular Cell Biology Laboratory, Department of Genetics, The Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Catherine A Higgins
- Centre for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| | - Zaneta Najda
- Molecular Cell Biology Laboratory, Department of Genetics, The Smurfit Institute, Trinity College, Dublin 2, Ireland
| | - Daniel B Longley
- Centre for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| | - Seamus J Martin
- Molecular Cell Biology Laboratory, Department of Genetics, The Smurfit Institute, Trinity College, Dublin 2, Ireland.
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19
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Wang W, Wang H, Long Y, Li Z, Li J. Controlling Hair Loss by Regulating Apoptosis in Hair Follicles: A Comprehensive Overview. Biomolecules 2023; 14:20. [PMID: 38254620 PMCID: PMC10813359 DOI: 10.3390/biom14010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024] Open
Abstract
Apoptosis is a physiological process that occurs in all cell types of the human body, and it profoundly changes the fate of hair by affecting hair follicle cells. This review outlines the cellular changes, intrinsic biochemical characteristics, and mechanisms underlying apoptosis and summarizes the hair follicle life cycle, including development, cycle stages, and corresponding cellular changes. Finally, the relationship between apoptosis and the hair cycle is discussed and the significance of apoptosis in hair loss conditions and drug treatments is highlighted. Apoptosis induces cellular changes and exhibits distinctive properties through intricate signaling pathways. Hair follicles undergo cyclic periods of growth, regression, and dormancy. Apoptosis is closely correlated with the regression phase by triggering hair follicle cell death and shedding. Regulation of apoptosis in hair follicles plays an essential role in hair loss due to maladies and drug treatments. Mitigating apoptosis can enhance hair growth and minimize hair loss. A comprehensive understanding of the correlation between apoptosis and the hair cycle can facilitate the development of novel treatments to prevent hair loss and stimulate hair regeneration.
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Affiliation(s)
- Wuji Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China; (W.W.); (H.W.); (Y.L.); (Z.L.)
- Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi 563006, China
- Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Honglan Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China; (W.W.); (H.W.); (Y.L.); (Z.L.)
- Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi 563006, China
- Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Yunluan Long
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China; (W.W.); (H.W.); (Y.L.); (Z.L.)
- Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi 563006, China
- Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Zheng Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China; (W.W.); (H.W.); (Y.L.); (Z.L.)
- Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi 563006, China
- Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
| | - Jingjie Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, China; (W.W.); (H.W.); (Y.L.); (Z.L.)
- Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical University, Zunyi 563006, China
- Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi 563006, China
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20
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Pang J, Vince JE. The role of caspase-8 in inflammatory signalling and pyroptotic cell death. Semin Immunol 2023; 70:101832. [PMID: 37625331 DOI: 10.1016/j.smim.2023.101832] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/20/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
The programmed cell death machinery exhibits surprising flexibility, capable of crosstalk and non-apoptotic roles. Much of this complexity arises from the diverse functions of caspase-8, a cysteine-aspartic acid protease typically associated with activating caspase-3 and - 7 to induce apoptosis. However, recent research has revealed that caspase-8 also plays a role in regulating the lytic gasdermin cell death machinery, contributing to pyroptosis and immune responses in contexts such as infection, autoinflammation, and T-cell signalling. In mice, loss of caspase-8 results in embryonic lethality from unrestrained necroptotic killing, while in humans caspase-8 deficiency can lead to an autoimmune lymphoproliferative syndrome, immunodeficiency, inflammatory bowel disease or, when it can't cleave its substrate RIPK1, early onset periodic fevers. This review focuses on non-canonical caspase-8 signalling that drives immune responses, including its regulation of inflammatory gene transcription, activation within inflammasome complexes, and roles in pyroptotic cell death. Ultimately, a deeper understanding of caspase-8 function will aid in determining whether, and when, targeting caspase-8 pathways could be therapeutically beneficial in human diseases.
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Affiliation(s)
- Jiyi Pang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia.
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21
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Li Y, Zhu J, Yu Z, Zhai F, Li H, Jin X. Regulation of apoptosis by ubiquitination in liver cancer. Am J Cancer Res 2023; 13:4832-4871. [PMID: 37970337 PMCID: PMC10636691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/04/2023] [Indexed: 11/17/2023] Open
Abstract
Apoptosis is a programmed cell death process critical to cell development and tissue homeostasis in multicellular organisms. Defective apoptosis is a crucial step in the malignant transformation of cells, including hepatocellular carcinoma (HCC), where the apoptosis rate is higher than in normal liver tissues. Ubiquitination, a post-translational modification process, plays a precise role in regulating the formation and function of different death-signaling complexes, including those involved in apoptosis. Aberrant expression of E3 ubiquitin ligases (E3s) in liver cancer (LC), such as cellular inhibitors of apoptosis proteins (cIAPs), X chromosome-linked IAP (XIAP), and linear ubiquitin chain assembly complex (LUBAC), can contribute to HCC development by promoting cell survival and inhibiting apoptosis. Therefore, the review introduces the main apoptosis pathways and the regulation of proteins in these pathways by E3s and deubiquitinating enzymes (DUBs). It summarizes the abnormal expression of these regulators in HCC and their effects on cancer inhibition or promotion. Understanding the role of ubiquitination in apoptosis and LC can provide insights into potential targets for therapeutic intervention.
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Affiliation(s)
- Yuxuan Li
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center of LiHuiLi Hospital, Ningbo UniversityNingbo 315040, Zhejiang, P. R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
| | - Jie Zhu
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center of LiHuiLi Hospital, Ningbo UniversityNingbo 315040, Zhejiang, P. R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
| | - Zongdong Yu
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center of LiHuiLi Hospital, Ningbo UniversityNingbo 315040, Zhejiang, P. R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
| | - Fengguang Zhai
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
| | - Hong Li
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center of LiHuiLi Hospital, Ningbo UniversityNingbo 315040, Zhejiang, P. R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
| | - Xiaofeng Jin
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center of LiHuiLi Hospital, Ningbo UniversityNingbo 315040, Zhejiang, P. R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo UniversityNingbo 315211, Zhejiang, P. R. China
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22
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Wang K, Zhao A, Tayier D, Tan K, Song W, Cheng Q, Li X, Chen Z, Wei Q, Yuan Y, Yang Z. Activation of AMPK ameliorates acute severe pancreatitis by suppressing pancreatic acinar cell necroptosis in obese mice models. Cell Death Discov 2023; 9:363. [PMID: 37777514 PMCID: PMC10542799 DOI: 10.1038/s41420-023-01655-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 09/10/2023] [Accepted: 09/18/2023] [Indexed: 10/02/2023] Open
Abstract
Obese people with acute pancreatitis (AP) have an increased risk of developing severe acute pancreatitis (SAP), which prolongs the length of hospital stay and increases mortality. Thus, elucidation of the mechanisms through which SAP occurs in obese individuals will provide clues for possible treatment targets. Differences in early events in obese or lean patients with AP have not been conclusively reported. We selected C57BL/6 mice as lean mice models, ob/ob mice or diet induced obese (DIO) mice as obese mice models and then induced experimental AP in mice via injections of caerulein. There were suppressed p-AMPK expressions in the pancreas of obese mice, compared with same-age lean C57BL/6 mice, which were further reduced in AP mice models. Obese AP mice were treated using AICAR, a direct AMPK agonist, which prevented pancreatic damage and cell death, suppressed pancreatic enzyme levels in serum, reduced the areas of fat saponification in the peritoneal cavity, prevented injury in other organs and decreased mice mortality rate. Further assays showed that AICAR activates p-AMPK to stabilize pro-caspase-8. Pro-caspase-8 enhances RIPK3 degradation, inhibits pancreatic acinar cell necroptosis, and downregulates the release of pancreatic enzymes. Thus, activation of AMPK by AICAR alleviates pancreatic acinar cell necroptosis and converts SAP to mild acute pancreatitis in obese mice.
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Affiliation(s)
- Kunlei Wang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Anbang Zhao
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Dilinigeer Tayier
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Kai Tan
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Wenjing Song
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Qian Cheng
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Xinyin Li
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Zhinan Chen
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Qifeng Wei
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China
| | - Yufeng Yuan
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China.
| | - Zhiyong Yang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
- Pancreatic Surgery Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
- Clinical Medicine Research Center for Minimally Invasive Procedure of Hepatobiliary & Pancreatic Diseases of Hubei Province, Wuhan, China.
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23
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El Yousfi Y, Mora-Molina R, López-Rivas A, Yerbes R. Role of the YAP/TAZ-TEAD Transcriptional Complex in the Metabolic Control of TRAIL Sensitivity by the Mevalonate Pathway in Cancer Cells. Cells 2023; 12:2370. [PMID: 37830584 PMCID: PMC10571597 DOI: 10.3390/cells12192370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/14/2023] Open
Abstract
Different studies have reported that inhibiting the mevalonate pathway with statins may increase the sensitivity of cancer cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), although the signaling mechanism leading to this sensitization remains largely unknown. We investigated the role of the YAP (Yes-associated protein)/TAZ (transcriptional co-activator with PDZ-binding motif)-TEAD (TEA/ATTS domain) transcriptional complex in the metabolic control of TRAIL sensitivity by the mevalonate pathway. We show that depleting nuclear YAP/TAZ in tumor cells, either via treatment with statins or by silencing YAP/TAZ expression with siRNAs, facilitates the activation of apoptosis by TRAIL. Furthermore, the blockage of TEAD transcriptional activity either pharmacologically or through the ectopic expression of a disruptor of the YAP/TAZ interaction with TEAD transcription factors, overcomes the resistance of tumor cells to the induction of apoptosis by TRAIL. Our results show that the mevalonate pathway controls cellular the FLICE-inhibitory protein (cFLIP) expression in tumor cells. Importantly, inhibiting the YAP/TAZ-TEAD signaling pathway induces cFLIP down-regulation, leading to a marked sensitization of tumor cells to apoptosis induction by TRAIL. Our data suggest that a combined strategy of targeting TEAD activity and selectively activating apoptosis signaling by agonists of apoptotic TRAIL receptors could be explored as a potential therapeutic approach in cancer treatment.
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Affiliation(s)
- Younes El Yousfi
- Centro Andaluz de Biología Molecular y Medicina Regenerativa-CABIMER, CSIC-Universidad de Sevilla-Universidad Pablo de Olavide, 41092 Seville, Spain; (Y.E.Y.); (R.M.-M.); (A.L.-R.)
| | - Rocío Mora-Molina
- Centro Andaluz de Biología Molecular y Medicina Regenerativa-CABIMER, CSIC-Universidad de Sevilla-Universidad Pablo de Olavide, 41092 Seville, Spain; (Y.E.Y.); (R.M.-M.); (A.L.-R.)
| | - Abelardo López-Rivas
- Centro Andaluz de Biología Molecular y Medicina Regenerativa-CABIMER, CSIC-Universidad de Sevilla-Universidad Pablo de Olavide, 41092 Seville, Spain; (Y.E.Y.); (R.M.-M.); (A.L.-R.)
| | - Rosario Yerbes
- Centro Andaluz de Biología Molecular y Medicina Regenerativa-CABIMER, CSIC-Universidad de Sevilla-Universidad Pablo de Olavide, 41092 Seville, Spain; (Y.E.Y.); (R.M.-M.); (A.L.-R.)
- Medical Physiology and Biophysics Department, Universidad de Sevilla and Instituto de Biomedicina de Sevilla (IBiS) (Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla), 41013 Seville, Spain
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24
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Patterson LL, Byerly CD, Solomon R, Pittner N, Bui DC, Patel J, McBride JW. Ehrlichia Notch signaling induction promotes XIAP stability and inhibits apoptosis. Infect Immun 2023; 91:e0000223. [PMID: 37594275 PMCID: PMC10501217 DOI: 10.1128/iai.00002-23] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 06/07/2023] [Indexed: 08/19/2023] Open
Abstract
Ehrlichia chaffeensis has evolved multiple strategies to evade innate defenses of the mononuclear phagocyte. Recently, we reported the E. chaffeensis tandem repeat protein (TRP)120 effector functions as a Notch ligand mimetic and a ubiquitin ligase that degrades the nuclear tumor suppressor, F-box and WD repeat domain-containing 7, a negative regulator of Notch. The Notch intracellular domain (NICD) is known to inhibit apoptosis primarily by interacting with X-linked inhibitor of apoptosis protein (XIAP) to prevent degradation. In this study, we determined that E. chaffeensis activation of Notch signaling increases XIAP levels, thereby inhibiting apoptosis through both the intrinsic and executioner pathways. Increased NICD and XIAP levels were detected during E. chaffeensis infection and after TRP120 Notch ligand mimetic peptide treatment. Conversely, XIAP levels were reduced in the presence of Notch inhibitor DAPT. Cytoplasmic and nuclear colocalization of NICD and XIAP was observed during infection and a direct interaction was confirmed by co-immunoprecipitation. Procaspase levels increased temporally during infection, consistent with increased XIAP levels; however, knockdown (KD) of XIAP during infection significantly increased apoptosis and Caspase-3, -7, and -9 levels. Furthermore, treatment with SM-164, a second mitochondrial activator of caspases (Smac/DIABLO) antagonist, resulted in decreased procaspase levels and increased caspase activation, induced apoptosis, and significantly decreased infection. In addition, RNAi KD of XIAP also decreased infection and significantly increased apoptosis. Moreover, ectopic expression of TRP120 HECT Ub ligase catalytically defective mutant in HeLa cells decreased NICD and XIAP levels and increased caspase activation compared to HeLa cells with functional HECT Ub ligase catalytic activity (TRP120-WT). This investigation reveals a mechanism whereby E. chaffeensis modulates Notch signaling to stabilize XIAP and inhibit apoptosis.
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Affiliation(s)
- LaNisha L. Patterson
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Caitlan D. Byerly
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Regina Solomon
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Nicholas Pittner
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Duc Cuong Bui
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Jignesh Patel
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Jere W. McBride
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
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25
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Freund L, Oehrl S, Schwingen J, Haeberle S, Döbel T, Lee PDH, Meisel S, Mihalceanu S, Rußwurm M, Luft T, Schäkel K. IFNγ Causes Keratinocyte Necroptosis in Acute Graft-Versus-Host Disease. J Invest Dermatol 2023; 143:1746-1756.e9. [PMID: 36889661 DOI: 10.1016/j.jid.2023.02.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 01/16/2023] [Accepted: 02/06/2023] [Indexed: 03/08/2023]
Abstract
Epidermal keratinocytes form the first-line cellular barrier of the skin for protection against external injuries and maintenance of local tissue homeostasis. Expression of ZBP1 was shown to cause necroptotic keratinocyte cell death and skin inflammation in mice. We sought to characterize the relevance of ZBP1 and necroptosis in human keratinocytes and type 1-driven cutaneous acute graft-versus-host disease. in this study, we identify ZBP1 expression, necroptosis, and interface dermatitis as being the hallmarks of acute graft-versus-host disease. ZBP1 expression was dependent on leukocyte-derived IFNγ, and interference with IFNγ signaling by Jak inhibition prevented cell death. In predominantly IL-17-driven psoriasis, both ZBP1 expression and necroptosis could not be detected. Of note, in contrast to the signaling in mice, ZBP1 signaling in human keratinocytes was not affected by RIPK1's presence. These findings show that ZBP1 drives inflammation in IFNγ-dominant type 1 immune responses in human skin and may further point to a general role of ZBP1-mediated necroptosis.
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Affiliation(s)
- Lukas Freund
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Stephanie Oehrl
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Julius Schwingen
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Stefanie Haeberle
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Döbel
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Paul D H Lee
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Stefan Meisel
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Silvia Mihalceanu
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Martin Rußwurm
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Luft
- Department of Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
| | - Knut Schäkel
- Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany.
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26
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Martinez Lagunas K, Savcigil DP, Zrilic M, Carvajal Fraile C, Craxton A, Self E, Uranga-Murillo I, de Miguel D, Arias M, Willenborg S, Piekarek M, Albert MC, Nugraha K, Lisewski I, Janakova E, Igual N, Tonnus W, Hildebrandt X, Ibrahim M, Ballegeer M, Saelens X, Kueh A, Meier P, Linkermann A, Pardo J, Eming S, Walczak H, MacFarlane M, Peltzer N, Annibaldi A. Cleavage of cFLIP restrains cell death during viral infection and tissue injury and favors tissue repair. SCIENCE ADVANCES 2023; 9:eadg2829. [PMID: 37494451 PMCID: PMC10371024 DOI: 10.1126/sciadv.adg2829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 06/22/2023] [Indexed: 07/28/2023]
Abstract
Cell death coordinates repair programs following pathogen attack and tissue injury. However, aberrant cell death can interfere with such programs and cause organ failure. Cellular FLICE-like inhibitory protein (cFLIP) is a crucial regulator of cell death and a substrate of Caspase-8. However, the physiological role of cFLIP cleavage by Caspase-8 remains elusive. Here, we found an essential role for cFLIP cleavage in restraining cell death in different pathophysiological scenarios. Mice expressing a cleavage-resistant cFLIP mutant, CflipD377A, exhibited increased sensitivity to severe acute respiratory syndrome coronavirus (SARS-CoV)-induced lethality, impaired skin wound healing, and increased tissue damage caused by Sharpin deficiency. In vitro, abrogation of cFLIP cleavage sensitizes cells to tumor necrosis factor(TNF)-induced necroptosis and apoptosis by favoring complex-II formation. Mechanistically, the cell death-sensitizing effect of the D377A mutation depends on glutamine-469. These results reveal a crucial role for cFLIP cleavage in controlling the amplitude of cell death responses occurring upon tissue stress to ensure the execution of repair programs.
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Affiliation(s)
- Kristel Martinez Lagunas
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Deniz Pinar Savcigil
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Matea Zrilic
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Carlos Carvajal Fraile
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Andrew Craxton
- MRC Toxicology Unit, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Emily Self
- MRC Toxicology Unit, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Iratxe Uranga-Murillo
- Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
| | - Diego de Miguel
- Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
| | - Maykel Arias
- Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Department of Microbiology, Radiology, Pediatry and Public Health, University of Zaragoza, Zaragoza, Spain
- CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | | | - Michael Piekarek
- Department of Dermatology, University of Cologne, 50937 Cologne, Germany
| | - Marie Christine Albert
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Kalvin Nugraha
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Ina Lisewski
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Erika Janakova
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Natalia Igual
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
| | - Wulf Tonnus
- Division of Nephrology, Department of Internal Medicine 3, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
- Biotechnology Center, Technische Universität Dresden, Dresden, Germany
| | - Ximena Hildebrandt
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Department of Translational Genomics, University of Cologne, Weyertal 115b, 50931 Köln, Germany
| | - Mohammed Ibrahim
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Department of Translational Genomics, University of Cologne, Weyertal 115b, 50931 Köln, Germany
| | - Marlies Ballegeer
- VIB-UGent Center for Medical Biotechnology, VIB, B-9052 Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, B-9000 Ghent, Belgium
| | - Xavier Saelens
- VIB-UGent Center for Medical Biotechnology, VIB, B-9052 Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, B-9000 Ghent, Belgium
| | - Andrew Kueh
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Pascal Meier
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine 3, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
- Biotechnology Center, Technische Universität Dresden, Dresden, Germany
- Division of Nephrology, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Julian Pardo
- Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Department of Microbiology, Radiology, Pediatry and Public Health, University of Zaragoza, Zaragoza, Spain
- CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Sabine Eming
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
- Department of Dermatology, University of Cologne, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Institute of Zoology, Developmental Biology Unit, University of Cologne, 50674 Cologne, Germany
| | - Henning Walczak
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
- Centre for Cell Death, Cancer, and Inflammation (CCCI), UCL Cancer Institute, University College, London WC1E 6BT, UK
| | - Marion MacFarlane
- MRC Toxicology Unit, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Nieves Peltzer
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
- Department of Translational Genomics, University of Cologne, Weyertal 115b, 50931 Köln, Germany
| | - Alessandro Annibaldi
- Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch Strasse 21, 50931, Cologne, Germany
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Messeha SS, Noel S, Zarmouh NO, Womble T, Latinwo LM, Soliman KFA. Involvement of AKT/PI3K Pathway in Sanguinarine's Induced Apoptosis and Cell Cycle Arrest in Triple-negative Breast Cancer Cells. Cancer Genomics Proteomics 2023; 20:323-342. [PMID: 37400144 PMCID: PMC10320563 DOI: 10.21873/cgp.20385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/27/2023] [Accepted: 04/05/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND/AIM Chemotherapy resistance in triple-negative breast cancer (TNBC) cells is well documented. Therefore, it is necessary to develop safer and more effective therapeutic agents to enhance the outcomes of chemotherapeutic agents. The natural alkaloid sanguinarine (SANG) has demonstrated therapeutic synergy when coupled with chemotherapeutic agents. SANG can also induce cell cycle arrest and trigger apoptosis in various cancer cells. MATERIALS AND METHODS In this study, we investigated the molecular mechanism underlying SANG activity in MDA-MB-231 and MDA-MB-468 cells as two genetically different models of TNBC. We employed various assays including Alamar Blue to measure the effect of SANG on cell viability and proliferation rate, flow cytometry analysis to study the potential of the compound to induce apoptosis and cell cycle arrest, quantitative qRT PCR apoptosis array to measure the expression of different genes mediating apoptosis, and the western system was used to analyze the impact of the compound on AKT protein expression. RESULTS SANG lowered cell viability and disrupted cell cycle progression in both cell lines. Furthermore, S-phase cell cycle arrest-mediated apoptosis was found to be the primary contributor to cell growth inhibition in MDA-MB-231 cells. SANG-treated TNBC cells showed significantly up-regulated mRNA expression of 18 genes associated with apoptosis, including eight TNF receptor superfamily (TNFRSF), three members of the BCL2 family, and two members of the caspase (CASP) family in MDA-MB-468 cells. In MDA-MB-231 cells, two members of the TNF superfamily and four members of the BCL2 family were affected. The western study data showed the inhibition of AKT protein expression in both cell lines concurrent with up-regulated BCL2L11 gene. Our results point to the AKT/PI3K signaling pathway as one of the key mechanisms behind SANG-induced cell cycle arrest and death. CONCLUSION SANG shows anticancer properties and apoptosis-related gene expression changes in the two TNBC cell lines and suggests AKT/PI3K pathway implication in apoptosis induction and cell cycle arrest. Thus, we propose SANG's potential as a solitary or supplementary treatment agent against TNBC.
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Affiliation(s)
- Samia S Messeha
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, Tallahassee, FL, U.S.A
- Department of Biology, College of Science and Technology, Florida A&M University, Tallahassee, FL, U.S.A
| | - Sophie Noel
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, Tallahassee, FL, U.S.A
- Department of Biology, College of Science and Technology, Florida A&M University, Tallahassee, FL, U.S.A
| | - Najla O Zarmouh
- Faculty of Medical Technology-Misrata, Libyan Ministry of Technical & Vocational Education, Misrata, Libya
| | - Tracy Womble
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, Tallahassee, FL, U.S.A
| | - Lekan M Latinwo
- Department of Biology, College of Science and Technology, Florida A&M University, Tallahassee, FL, U.S.A
| | - Karam F A Soliman
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, Tallahassee, FL, U.S.A.;
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28
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Huyghe J, Priem D, Bertrand MJM. Cell death checkpoints in the TNF pathway. Trends Immunol 2023:S1471-4906(23)00105-9. [PMID: 37357102 DOI: 10.1016/j.it.2023.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/19/2023] [Accepted: 05/19/2023] [Indexed: 06/27/2023]
Abstract
Tumor necrosis factor (TNF) plays a central role in orchestrating mammalian inflammatory responses. It promotes inflammation either directly by inducing inflammatory gene expression or indirectly by triggering cell death. TNF-mediated cell death-driven inflammation can be beneficial during infection by providing cell-extrinsic signals that help to mount proper immune responses. Uncontrolled cell death caused by TNF is instead highly detrimental and is believed to cause several human autoimmune diseases. Death is not the default response to TNF sensing. Molecular brakes, or cell death checkpoints, actively repress TNF cytotoxicity to protect the organism from its detrimental consequences. These checkpoints therefore constitute essential safeguards against inflammatory diseases. Recent advances in the field have revealed the existence of several new and unexpected brakes against TNF cytotoxicity and pathogenicity.
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Affiliation(s)
- Jon Huyghe
- Cell Death and Inflammation Unit, Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Dario Priem
- Cell Death and Inflammation Unit, Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Mathieu J M Bertrand
- Cell Death and Inflammation Unit, Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
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29
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Xiao SQ, Cheng M, Wang L, Cao J, Fang L, Zhou XP, He XJ, Hu YF. The role of apoptosis in the pathogenesis of osteoarthritis. INTERNATIONAL ORTHOPAEDICS 2023:10.1007/s00264-023-05847-1. [PMID: 37294429 DOI: 10.1007/s00264-023-05847-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/17/2023] [Indexed: 06/10/2023]
Abstract
PURPOSE Apoptosis is an important physiological process, making a great difference to development and tissue homeostasis. Osteoarthritis (OA) is a chronic joint disease characterized by degeneration and destruction of articular cartilage and bone hyperplasia. This purpose of this study is to provide an updated review of the role of apoptosis in the pathogenesis of osteoarthritis. METHODS A comprehensive review of the literature on osteoarthritis and apoptosis was performed, which mainly focused on the regulatory factors and signaling pathways associated with chondrocyte apoptosis in osteoarthritis and other pathogenic mechanisms involved in chondrocyte apoptosis. RESULTS Inflammatory mediators such as reactive oxygen species (ROS), nitric oxide (NO), IL-1β, tumor necrosis factor-α (TNF-α), and Fas are closely related to chondrocyte apoptosis. NF-κB signaling pathway, Wnt signaling pathway, and Notch signaling pathway activate proteins and gene targets that promote or inhibit the progression of osteoarthritis disease, including chondrocyte apoptosis and ECM degradation. Long non-coding RNAs (LncRNAs) and microRNAs (microRNAs) have gradually replaced single and localized research methods and become the main research approaches. In addition, the relationship between cellular senescence, autophagy, and apoptosis was also briefly explained. CONCLUSION This review offers a better molecular delineation of apoptotic processes that may help in designing new therapeutic options for OA treatment.
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Affiliation(s)
- Si-Qi Xiao
- Department of Rheumatology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China
| | - Miao Cheng
- Department of Rheumatology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China
| | - Lei Wang
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China
| | - Jing Cao
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China
| | - Liang Fang
- Department of Rheumatology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China
| | - Xue-Ping Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xiao-Jin He
- Department of Rheumatology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.
- Jiangsu Province Hospital of Chinese medicine, Nanjing, 210029, China.
| | - Yu-Feng Hu
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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30
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Kalkavan H, Rühl S, Shaw JJP, Green DR. Non-lethal outcomes of engaging regulated cell death pathways in cancer. NATURE CANCER 2023; 4:795-806. [PMID: 37277528 PMCID: PMC10416134 DOI: 10.1038/s43018-023-00571-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 04/27/2023] [Indexed: 06/07/2023]
Abstract
Regulated cell death (RCD) is essential for successful systemic cancer therapy. Yet, the engagement of RCD pathways does not inevitably result in cell death. Instead, RCD pathways can take part in diverse biological processes if the cells survive. Consequently, these surviving cells, for which we propose the term 'flatliners', harbor important functions. These evolutionarily conserved responses can be exploited by cancer cells to promote their own survival and growth, with challenges and opportunities for cancer therapy.
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Affiliation(s)
- Halime Kalkavan
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN, USA
- West German Cancer Center, Department of Medical Oncology, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - Sebastian Rühl
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN, USA
- T3 Pharmaceuticals AG, Allschwil, Switzerland
| | - Jeremy J P Shaw
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Douglas R Green
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN, USA.
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31
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Gupta R, Kumari S, Tripathi R, Ambasta RK, Kumar P. Unwinding the modalities of necrosome activation and necroptosis machinery in neurological diseases. Ageing Res Rev 2023; 86:101855. [PMID: 36681250 DOI: 10.1016/j.arr.2023.101855] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/09/2022] [Accepted: 01/15/2023] [Indexed: 01/20/2023]
Abstract
Necroptosis, a regulated form of cell death, is involved in the genesis and development of various life-threatening diseases, including cancer, neurological disorders, cardiac myopathy, and diabetes. Necroptosis initiates with the formation and activation of a necrosome complex, which consists of RIPK1, RIPK2, RIPK3, and MLKL. Emerging studies has demonstrated the regulation of the necroptosis cell death pathway through the implication of numerous post-translational modifications, namely ubiquitination, acetylation, methylation, SUMOylation, hydroxylation, and others. In addition, the negative regulation of the necroptosis pathway has been shown to interfere with brain homeostasis through the regulation of axonal degeneration, mitochondrial dynamics, lysosomal defects, and inflammatory response. Necroptosis is controlled by the activity and expression of signaling molecules, namely VEGF/VEGFR, PI3K/Akt/GSK-3β, c-Jun N-terminal kinases (JNK), ERK/MAPK, and Wnt/β-catenin. Herein, we briefly discussed the implication and potential of necrosome activation in the pathogenesis and progression of neurological manifestations, such as Alzheimer's disease, Parkinson's disease, multiple sclerosis, traumatic brain injury, and others. Further, we present a detailed picture of natural compounds, micro-RNAs, and chemical compounds as therapeutic agents for treating neurological manifestations.
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Affiliation(s)
- Rohan Gupta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Smita Kumari
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Rahul Tripathi
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Rashmi K Ambasta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly Delhi College of Engineering), India
| | - Pravir Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly Delhi College of Engineering), India.
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32
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Ildefonso GV, Oliver Metzig M, Hoffmann A, Harris LA, Lopez CF. A biochemical necroptosis model explains cell-type-specific responses to cell death cues. Biophys J 2023; 122:817-834. [PMID: 36710493 PMCID: PMC10027451 DOI: 10.1016/j.bpj.2023.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 12/31/2022] [Accepted: 01/24/2023] [Indexed: 01/30/2023] Open
Abstract
Necroptosis is a form of regulated cell death associated with degenerative disorders, autoimmune and inflammatory diseases, and cancer. To better understand the biochemical mechanisms regulating necroptosis, we constructed a detailed computational model of tumor necrosis factor-induced necroptosis based on known molecular interactions from the literature. Intracellular protein levels, used as model inputs, were quantified using label-free mass spectrometry, and the model was calibrated using Bayesian parameter inference to experimental protein time course data from a well-established necroptosis-executing cell line. The calibrated model reproduced the dynamics of phosphorylated mixed lineage kinase domain-like protein, an established necroptosis reporter. A subsequent dynamical systems analysis identified four distinct modes of necroptosis signal execution, distinguished by rate constant values and the roles of the RIP1 deubiquitinating enzymes A20 and CYLD. In one case, A20 and CYLD both contribute to RIP1 deubiquitination, in another RIP1 deubiquitination is driven exclusively by CYLD, and in two modes either A20 or CYLD acts as the driver with the other enzyme, counterintuitively, inhibiting necroptosis. We also performed sensitivity analyses of initial protein concentrations and rate constants to identify potential targets for modulating necroptosis sensitivity within each mode. We conclude by associating numerous contrasting and, in some cases, counterintuitive experimental results reported in the literature with one or more of the model-predicted modes of necroptosis execution. In all, we demonstrate that a consensus pathway model of tumor necrosis factor-induced necroptosis can provide insights into unresolved controversies regarding the molecular mechanisms driving necroptosis execution in numerous cell types under different experimental conditions.
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Affiliation(s)
- Geena V Ildefonso
- Chemical and Physical Biology Program, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Marie Oliver Metzig
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California; Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, California
| | - Alexander Hoffmann
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California; Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, California
| | - Leonard A Harris
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas; Interdisciplinary Graduate Program in Cell and Molecular Biology, University of Arkansas, Fayetteville, Arkansas; Cancer Biology Program, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
| | - Carlos F Lopez
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee.
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33
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Mansour HM, Mohamed AF, El-Khatib AS, Khattab MM. Kinases control of regulated cell death revealing druggable targets for Parkinson's disease. Ageing Res Rev 2023; 85:101841. [PMID: 36608709 DOI: 10.1016/j.arr.2022.101841] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/31/2022] [Accepted: 12/31/2022] [Indexed: 01/05/2023]
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder in the world. Motor impairment seen in PD is associated with dopaminergic neurotoxicity in the striatum, and dopaminergic neuronal death in the substantia nigra pars compacta. Cell death has a significant effect on the development and progression of PD. Extensive research over the last few decades has unveiled new regulated cell death (RCD) mechanisms that are not dependent on apoptosis such as necroptosis, ferroptosis, and others. In this review, we will overview the mechanistic pathways of different types of RCD. Unlike accidental cell death, RCD subroutines can be regulated and the RCD-associated kinases are potential druggable targets. Hence, we will address an overview and analysis of different kinases regulating apoptosis such as receptor-interacting protein kinase 1 (RIPK-1), RIPK3, mixed lineage kinase (MLK), Ataxia telangiectasia muted (ATM), cyclin-dependent kinase (CDK), death-associated protein kinase 1 (DAPK1), Apoptosis-signaling kinase-1 (ASK-1), and Leucine-rich repeat kinase-2 (LRRK2). In addition to the role of RIPK1, RIPK3, and Mixed Lineage Kinase Domain like Pseudokinase (MLKL) in necroptosis. We also overview functions of AMP-kinase (AMPK), protein kinase C (PKC), RIPK3, and ATM in ferroptosis. We will recap the anti-apoptotic, anti-necroptotic, and anti-ferroptotic effects of different kinase inhibitors in different models of PD. Finally, we will discuss future challenges in the repositioning of kinase inhibitors in PD. In conclusion, this review kicks-start targeting RCD from a kinases perspective, opening novel therapeutic disease-modifying therapeutic avenues for PD.
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Affiliation(s)
| | - Ahmed F Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Aiman S El-Khatib
- Egyptian Drug Authority, EDA, Giza, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mahmoud M Khattab
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Chen KW, Brodsky IE. Yersinia interactions with regulated cell death pathways. Curr Opin Microbiol 2023; 71:102256. [PMID: 36584489 DOI: 10.1016/j.mib.2022.102256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 12/29/2022]
Abstract
Cell death in response to infection is conserved across all kingdoms of life. In metazoans, cell death upon bacterial infection is primarily carried out by the cysteine and aspartate protease and receptor-interacting serine/threonine protein kinase families. The Gram-negative bacterial genus Yersinia includes pathogens that cause disease in humans and other animals ranging from plague to gastrointestinal infections. Pathogenic Yersiniae express a type-III secretion system (T3SS), which translocates effectors that disrupt phagocytosis and innate immune signaling to evade immune defenses and replicate extracellularly in infected tissues. Blockade of innate immune signaling, disruption of the actin cytoskeleton, and the membrane-disrupting activity of the T3SS translocon pore, are all sensed by innate immune cells. Here, we discuss recent advances in understanding the pathways that regulate Yersinia-induced cell death, and how manipulation of these cell death pathways over the course of infection promotes bacterial dissemination or host defense.
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Affiliation(s)
- Kaiwen W Chen
- Immunology Translational Research Programme, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Igor E Brodsky
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, United States; Department of Microbiology, University of Pennsylvania Perelman School of Medicine, United States.
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35
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Bock FJ, Riley JS. When cell death goes wrong: inflammatory outcomes of failed apoptosis and mitotic cell death. Cell Death Differ 2023; 30:293-303. [PMID: 36376381 PMCID: PMC9661468 DOI: 10.1038/s41418-022-01082-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Apoptosis is a regulated cellular pathway that ensures that a cell dies in a structured fashion to prevent negative consequences for the tissue or the organism. Dysfunctional apoptosis is a hallmark of numerous pathologies, and treatments for various diseases are successful based on the induction of apoptosis. Under homeostatic conditions, apoptosis is a non-inflammatory event, as the activation of caspases ensures that inflammatory pathways are disabled. However, there is an increasing understanding that under specific conditions, such as caspase inhibition, apoptosis and the apoptotic machinery can be re-wired into a process which is inflammatory. In this review we discuss how the death receptor and mitochondrial pathways of apoptosis can activate inflammation. Furthermore, we will highlight how cell death due to mitotic stress might be a special case when it comes to cell death and the induction of inflammation.
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Affiliation(s)
- Florian J Bock
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Reproduction, Maastricht University Medical Centre, Maastricht, The Netherlands.
| | - Joel S Riley
- Institute of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria.
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Montinaro A, Walczak H. Harnessing TRAIL-induced cell death for cancer therapy: a long walk with thrilling discoveries. Cell Death Differ 2023; 30:237-249. [PMID: 36195672 PMCID: PMC9950482 DOI: 10.1038/s41418-022-01059-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 02/10/2023] Open
Abstract
Tumor necrosis factor (TNF)-related apoptosis inducing ligand (TRAIL) can induce apoptosis in a wide variety of cancer cells, both in vitro and in vivo, importantly without killing any essential normal cells. These findings formed the basis for the development of TRAIL-receptor agonists (TRAs) for cancer therapy. However, clinical trials conducted with different types of TRAs have, thus far, afforded only limited therapeutic benefit, as either the respectively chosen agonist showed insufficient anticancer activity or signs of toxicity, or the right TRAIL-comprising combination therapy was not employed. Therefore, in this review we will discuss molecular determinants of TRAIL resistance, the most promising TRAIL-sensitizing agents discovered to date and, importantly, whether any of these could also prove therapeutically efficacious upon cancer relapse following conventional first-line therapies. We will also discuss the more recent progress made with regards to the clinical development of highly active non-immunogenic next generation TRAs. Based thereupon, we next propose how TRAIL resistance might be successfully overcome, leading to the possible future development of highly potent, cancer-selective combination therapies that are based on our current understanding of biology TRAIL-induced cell death. It is possible that such therapies may offer the opportunity to tackle one of the major current obstacles to effective cancer therapy, namely overcoming chemo- and/or targeted-therapy resistance. Even if this were achievable only for certain types of therapy resistance and only for particular types of cancer, this would be a significant and meaningful achievement.
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Affiliation(s)
- Antonella Montinaro
- Centre for Cell Death, Cancer, and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6DD, UK.
| | - Henning Walczak
- Centre for Cell Death, Cancer, and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6DD, UK.
- CECAD Cluster of Excellence, University of Cologne, 50931, Cologne, Germany.
- Center for Biochemistry, Medical Faculty, Joseph-Stelzmann-Str. 52, University of Cologne, 50931, Cologne, Germany.
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Maiese A, Manetti AC, Santoro P, Del Duca F, De Matteis A, Turillazzi E, Frati P, Fineschi V. FOXO3 Depletion as a Marker of Compression-Induced Apoptosis in the Ligature Mark: An Immunohistochemical Study. Int J Mol Sci 2023; 24:ijms24021396. [PMID: 36674912 PMCID: PMC9866130 DOI: 10.3390/ijms24021396] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/04/2023] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
One of the most challenging issues in forensic pathology is lesion vitality demonstration, particularly in cases of hanging. Over the past few years, immunohistochemistry has been applied to this field with promising results. In particular, protein and transcription factors involved in the apoptotic process have been studied as vitality markers for the ligature mark. This study represents an implementation of our previous studies on ligature mark vitality demonstration. In this study, we evaluated the FOXO3 expression in post-mortem cervical skin samples through an immunohistochemical analysis. To evaluate FOXO3 expression, anti-FOXO3 antibodies (GTX100277) were used. The study group comprised 21 cases, 8 women and 13 men, whereas the control group consisted of 13 cases of subjects who died due to other causes. Decomposition and no clear circumstantial data were exclusion criteria. We found that FOXO3 is decreased in hanging cases compared with normal skin in other causes of death (p-value < 0.05). No differences were seen concerning the type of hanging material (hard or soft), type of hanging (complete or incomplete), and position of the knot. Our results suggest that FOXO3 depletion could be a valid immunohistochemical marker of ligature mark vitality.
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Affiliation(s)
- Aniello Maiese
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, PI, Italy
- Correspondence:
| | - Alice Chiara Manetti
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, PI, Italy
| | - Paola Santoro
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, RM, Italy
| | - Fabio Del Duca
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, RM, Italy
| | - Alessandra De Matteis
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, RM, Italy
| | - Emanuela Turillazzi
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, PI, Italy
| | - Paola Frati
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, RM, Italy
| | - Vittorio Fineschi
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, RM, Italy
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Patterson LL, Byerly CD, Solomon R, Pittner N, Bui DC, Patel J, McBride JW. Ehrlichia Notch signaling induction promotes XIAP stability and inhibits apoptosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.06.523066. [PMID: 36711597 PMCID: PMC9881962 DOI: 10.1101/2023.01.06.523066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Ehrlichia chaffeensis has evolved multiple strategies to evade innate defenses of the mononuclear phagocyte. Recently, we reported the E. chaffeensis TRP120 effector functions as a Notch ligand mimetic and a ubiquitin ligase that degrades the nuclear tumor suppressor, F-box and WD repeat domain-containing 7 (FBW7), a negative regulator of Notch. The Notch receptor intracellular domain (NICD) is known to inhibit apoptosis primarily by interacting with X-linked inhibitor of apoptosis protein (XIAP) to prevent degradation. In this study, we determined E. chaffeensis activation of Notch signaling increases XIAP levels, thereby inhibiting intrinsic apoptosis. Increased NICD and XIAP levels were detected during E. chaffeensis infection and after TRP120 Notch ligand mimetic peptide treatment. Conversely, XIAP levels were reduced in the presence of Notch inhibitor DAPT. Cytoplasmic colocalization of NICD and XIAP was observed during infection and a direct interaction was confirmed by co-immunoprecipitation. Procaspase levels increased temporally during infection, consistent with increased XIAP levels; however, knockdown of XIAP during infection significantly increased apoptosis and Caspase-3, -7 and -9 levels. Further, treatment with SM-164, a second mitochondrial activator of caspases (Smac/DIABLO) antagonist, resulted in decreased procaspase levels and increased caspase activation, induced apoptosis, and significantly decreased infection. In addition, iRNA knockdown of XIAP also decreased infection and significantly increased apoptosis. Moreover, ectopic expression of TRP120 HECT Ub ligase catalytically defective mutant in HeLa cells decreased NICD and XIAP levels and increased caspase activation compared to WT. This investigation reveals a mechanism whereby E. chaffeensis repurposes Notch signaling to stabilize XIAP and inhibit apoptosis. Author Summary Ehrlichia chaffeensis is a tick-borne, obligately intracellular bacterium that exhibits tropism for mononuclear phagocytes. E. chaffeensis survives by mobilizing various molecular strategies to promote cell survival, including modulation of apoptosis. This investigation reveals an E. chaffeensis initiated, Notch signaling regulated, antiapoptotic mechanism involving inhibitor of apoptosis proteins (IAPs). Herein, we demonstrate that E. chaffeensis induced Notch activation results in Notch intracellular domain stabilization of X-linked inhibitor of apoptosis protein (XIAP) to inhibit intrinsic apoptosis. This study highlights a novel mechanistic strategy whereby intracellular pathogens repurpose evolutionarily conserved eukaryotic signaling pathways to engage an antiapoptotic program for intracellular survival.
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Glycobiology of cellular expiry: Decrypting the role of glycan-lectin regulatory complex and therapeutic strategies focusing on cancer. Biochem Pharmacol 2023; 207:115367. [PMID: 36481348 DOI: 10.1016/j.bcp.2022.115367] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Often the outer leaflets of living cells bear a coat of glycosylated proteins, which primarily regulates cellular processes. Glycosylation of such proteins occurs as part of their post-translational modification. Within the endoplasmic reticulum, glycosylation enables the attachment of specific oligosaccharide moieties such as, 'glycan' to the transmembrane receptor proteins which confers precise biological information for governing the cell fate. The nature and degree of glycosylation of cell surface receptors are regulated by a bunch of glycosyl transferases and glycosidases which fine-tune attachment or detachment of glycan moieties. In classical death receptors, upregulation of glycosylation by glycosyl transferases is capable of inducing cell death in T cells, tumor cells, etc. Thus, any deregulated alternation at surface glycosylation of these death receptors can result in life-threatening disorder like cancer. In addition, transmembrane glycoproteins and lectin receptors can transduce intracellular signals for cell death execution. Exogenous interaction of lectins with glycan containing death receptors signals for cell death initiation by modulating downstream signalings. Subsequently, endogenous glycan-lectin interplay aids in the customization and implementation of the cell death program. Lastly, the glycan-lectin recognition system dictates the removal of apoptotic cells by sending accurate signals to the extracellular milieu. Since glycosylation has proven to be a biomarker of cellular death and disease progression; glycans serve as specific therapeutic targets of cancers. In this context, we are reviewing the molecular mechanisms of the glycan-lectin regulatory network as an integral part of cell death machinery in cancer to target them for successful therapeutic and clinical approaches.
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40
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Mechanisms of Drug Resistance in Ovarian Cancer and Associated Gene Targets. Cancers (Basel) 2022; 14:cancers14246246. [PMID: 36551731 PMCID: PMC9777152 DOI: 10.3390/cancers14246246] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
In the United States, over 100,000 women are diagnosed with a gynecologic malignancy every year, with ovarian cancer being the most lethal. One of the hallmark characteristics of ovarian cancer is the development of resistance to chemotherapeutics. While the exact mechanisms of chemoresistance are poorly understood, it is known that changes at the cellular and molecular level make chemoresistance challenging to treat. Improved therapeutic options are needed to target these changes at the molecular level. Using a precision medicine approach, such as gene therapy, genes can be specifically exploited to resensitize tumors to therapeutics. This review highlights traditional and novel gene targets that can be used to develop new and improved targeted therapies, from drug efflux proteins to ovarian cancer stem cells. The review also addresses the clinical relevance and landscape of the discussed gene targets.
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41
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Zhou Z, Song X, Kang R, Tang D. The Emerging Role of Deubiquitinases in Cell Death. Biomolecules 2022; 12:1825. [PMID: 36551253 PMCID: PMC9775562 DOI: 10.3390/biom12121825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Regulated cell death (RCD) is a signal-controlled process that not only eliminates infected, damaged, or aged cells but is also implicated in a variety of pathological conditions. The process of RCD is regulated by intracellular proteins that undergo varying levels of post-translational modifications, including mono- or polyubiquitination. Functionally, ubiquitination can affect protein abundance, localization, and activity. Like other post-translational modifications, ubiquitination is a dynamic and reversible process mediated by deubiquitinases, a large class of proteases that cleave ubiquitin from proteins and other substrates. The balance between ubiquitination and deubiquitination machinery determines cell fate under stressful conditions. Here, we review the latest advances in our understanding of the role of deubiquitinases in regulating the main types of RCD, including apoptosis, necroptosis, pyroptosis, and ferroptosis. This knowledge may contribute to identifying new protein degradation-related prognostic markers and therapeutic targets for human disease.
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Affiliation(s)
| | | | | | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX 75390, USA
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42
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Bibo-Verdugo B, Salvesen GS. Caspase mechanisms in the regulation of inflammation. Mol Aspects Med 2022; 88:101085. [PMID: 35248371 DOI: 10.1016/j.mam.2022.101085] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 12/31/2022]
Abstract
Regulated cell death is defined as genetically encoded pathways that lead towards the demise of cells. In mammals, cell demise can be either inflammatory or non-inflammatory, depending on whether the mechanism of death results in cell rupture or not. Inflammatory cell death can lead towards acute and chronic disease. Therefore, it becomes important to distinguish the mechanisms that result in these different inflammatory cell death outcomes. Apoptosis is a non-inflammatory form of cell death where cells resist rupture. In contrast, pyroptosis and necroptosis are inflammatory forms of cell death principally because of release of pro-inflammatory mediators from cells undergoing lysis. This review focusses on the mechanisms of these different cell death outcomes with specific emphasis on the caspase family of proteolytic enzymes.
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Affiliation(s)
- Betsaida Bibo-Verdugo
- Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA.
| | - Guy S Salvesen
- Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA.
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43
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Bai ZQ, Hu K. Expression, purification, and characterization of c-FLIP tandem death effector domains from Escherichia coli. Protein Expr Purif 2022; 200:106168. [PMID: 36084903 DOI: 10.1016/j.pep.2022.106168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/01/2022] [Accepted: 09/01/2022] [Indexed: 11/26/2022]
Abstract
Cellular FLICE-like inhibitory protein (c-FLIP) regulates extrinsic apoptosis by controlling procaspase-8 activation through its tandem N-terminal death effector domains (DEDs). Here, we present the expression and purification of c-FLIP tandem DEDs (tDED) from Escherichia coli. We observed that the c-FLIPtDED maintains monomeric form under near-physiological pH condition in vitro. Our results also reveal a significant correlation between the pH conditions and the structure of c-FLIPtDED (F114A). The described methods and results would be helpful for follow-up study on the structural and functional of c-FLIP.
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Affiliation(s)
- Zhi-Qiang Bai
- Innovative Institute of Chinese Medicine and Pharmacy, University of Traditional Chinese Medicine, Chengdu, 611137, China; College of Science, Yunnan Agricultural University, Kunming, 650201, China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Kaifeng Hu
- Innovative Institute of Chinese Medicine and Pharmacy, University of Traditional Chinese Medicine, Chengdu, 611137, China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
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44
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Milyutina YP, Korenevskii AV, Vasilyeva VV, Bochkovskii SK, Ishchenko AM, Simbirtsev AS, Sokolov DI, Selkov SA. Caspase Activation in Trophoblast Cells after Interacting with Microparticles Produced by Natural Killer Cells in vitro. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s002209302206014x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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45
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Limiting glutamine utilization activates a GCN2/TRAIL-R2/Caspase-8 apoptotic pathway in glutamine-addicted tumor cells. Cell Death Dis 2022; 13:906. [PMID: 36302756 PMCID: PMC9613879 DOI: 10.1038/s41419-022-05346-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 01/23/2023]
Abstract
Oncogenic transformation leads to changes in glutamine metabolism that make transformed cells highly dependent on glutamine for anabolic growth and survival. Herein, we investigated the cell death mechanism activated in glutamine-addicted tumor cells in response to the limitation of glutamine metabolism. We show that glutamine starvation triggers a FADD and caspase-8-dependent and mitochondria-operated apoptotic program in tumor cells that involves the pro-apoptotic TNF-related apoptosis-inducing ligand receptor 2 (TRAIL-R2), but is independent of its cognate ligand TRAIL. In glutamine-depleted tumor cells, activation of the amino acid-sensing general control nonderepressible-2 kinase (GCN2) is responsible for TRAIL-R2 upregulation, caspase-8 activation, and apoptotic cell death. Interestingly, GCN2-dependent ISR signaling induced by methionine starvation also leads to TRAIL-R2 upregulation and apoptosis. Moreover, pharmacological inhibition of transaminases activates a GCN2 and TRAIL-R2-dependent apoptotic mechanism that is inhibited by non-essential amino acids (NEAA). In addition, metabolic stress upon glutamine deprivation also results in GCN2-independent FLICE-inhibitory protein (FLIP) downregulation facilitating caspase-8 activation and apoptosis. Importantly, downregulation of the long FLIP splice form (FLIPL) and apoptosis upon glutamine deprivation are inhibited in the presence of a membrane-permeable α-ketoglutarate. Collectively, our data support a model in which limiting glutamine utilization in glutamine-addicted tumor cells triggers a previously unknown cell death mechanism regulated by GCN2 that involves the TRAIL-R2-mediated activation of the extrinsic apoptotic pathway.
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The resurrection of RIP kinase 1 as an early cell death checkpoint regulator-a potential target for therapy in the necroptosis era. EXPERIMENTAL & MOLECULAR MEDICINE 2022; 54:1401-1411. [PMID: 36171264 PMCID: PMC9534832 DOI: 10.1038/s12276-022-00847-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/07/2022] [Accepted: 07/15/2022] [Indexed: 01/05/2023]
Abstract
Receptor-interacting serine threonine protein kinase 1 (RIPK1) has emerged as a central molecular switch in controlling the balance between cell survival and cell death. The pro-survival role of RIPK1 in maintaining cell survival is achieved via its ability to induce NF-κB-dependent expression of anti-apoptotic genes. However, recent advances have identified the pro-death function of RIPK1: posttranslational modifications of RIPK1 in the tumor necrosis factor receptor 1 (TNFR1)-associated complex-I, in the cytosolic complex-IIb or in necrosomes regulate the cytotoxic potential of RIPK1, forming an early cell death checkpoint. Since the kinase activity of RIPK1 is indispensable in RIPK3- and MLKL-mediated necroptosis induction, while it is dispensable in apoptosis, a better understanding of this early cell death checkpoint via RIPK1 might lead to new insights into the molecular mechanisms controlling both apoptotic and necroptotic modes of cell death and help develop novel therapeutic approaches for cancer. Here, we present an emerging view of the regulatory mechanisms for RIPK1 activity, especially with respect to the early cell death checkpoint. We also discuss the impact of dysregulated RIPK1 activity in pathophysiological settings and highlight its therapeutic potential in treating human diseases. Improved understanding of the molecular mechanisms that allow a protein to control the balance between cell survival or early death could reveal new approaches to treating conditions including chronic inflammatory disease and cancer. Gang Min Hur and colleagues at Chungnam National University in Daejeon, South Korea, with Han-Ming Shen at the University of Macau in China, review emerging evidence about how the protein called receptor-interacting serine/threonine-protein kinase 1 (RIPK1) influences whether cells move towards death or survival at a key ‘checkpoint’ in cell development. Cells can undergo a natural process of programmed cell death called apoptosis, die abnormally in a disease process called necroptosis, or survive. RIPK1 appears able to influence which path is chosen depending on which genes it regulates and which proteins it interacts with. Many details are still unclear, and need further investigation.
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47
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Bai ZQ, Ma X, Liu B, Huang T, Hu K. Solution structure of c-FLIP death effector domains. Biochem Biophys Res Commun 2022; 617:1-6. [PMID: 35688044 DOI: 10.1016/j.bbrc.2022.05.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 11/28/2022]
Abstract
The formation of death-inducing signaling complex (DISC) and death effector domain (DED) filament initiates extrinsic apoptosis. Recruitment and activation of procaspase-8 at the DISC are regulated by c-FLIP. The interaction between c-FLIP and procaspase-8 is mediated by their tandem DEDs (tDED). However, the structure of c-FLIPtDED and how c-FLIP interferes with procaspase-8 activation at the DISC remain elusive. Here, we solved the monomeric structure of c-FLIPtDED (F114G) at near physiological pH by solution nuclear magnetic resonance (NMR). Structural superimposition reveals c-FLIPtDED (F114G) adopts a structural topology similar to that of procaspase-8tDED. Our results provide a structural basis for understanding how c-FLIP interacts with procaspase-8 and the molecular mechanisms of c-FLIP in regulating cell death.
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Affiliation(s)
- Zhi-Qiang Bai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Heilongtan, Kunming, 650201, Yunnan, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaofang Ma
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Bin Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Heilongtan, Kunming, 650201, Yunnan, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tao Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Heilongtan, Kunming, 650201, Yunnan, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kaifeng Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Heilongtan, Kunming, 650201, Yunnan, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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48
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Restoring TRAILR2/DR5-Mediated Activation of Apoptosis upon Endoplasmic Reticulum Stress as a Therapeutic Strategy in Cancer. Int J Mol Sci 2022; 23:ijms23168987. [PMID: 36012252 PMCID: PMC9409255 DOI: 10.3390/ijms23168987] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/02/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022] Open
Abstract
The uncontrolled proliferation of malignant cells in growing tumors results in the generation of different stressors in the tumor microenvironment, such as nutrient shortage, hypoxia and acidosis, among others, that disrupt endoplasmic reticulum (ER) homeostasis and may lead to ER stress. As a response to ER stress, both normal and tumor cells launch a set of signaling pathways known as the unfolded protein response (UPR) to restore ER proteostasis and maintain cell viability and function. However, under sustained ER stress, an apoptotic cell death process can be induced and this has been the subject of different review articles, although the role of the TRAIL-R2/DR5-activated extrinsic pathway of apoptosis has not yet been thoroughly summarized. In this Review, we provide an updated overview of the molecular mechanisms regulating cell fate decisions in tumor cells undergoing ER stress and discuss the role of the tumor necrosis factor (TNF)-related apoptosis-inducing ligand receptor 2 (TRAIL-R2/DR5) in the final outcome of UPR signaling. Particularly, we focus on the mechanisms controlling cellular FLICE-like inhibitory protein (FLIP) levels in tumor cells undergoing ER stress, which may represent a potential target for therapeutic intervention in cancer.
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49
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The cross-talk of autophagy and apoptosis in breast carcinoma: implications for novel therapies? Biochem J 2022; 479:1581-1608. [PMID: 35904454 DOI: 10.1042/bcj20210676] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/12/2022]
Abstract
Breast cancer is still the most common cancer in women worldwide. Resistance to drugs and recurrence of the disease are two leading causes of failure in treatment. For a more efficient treatment of patients, the development of novel therapeutic regimes is needed. Recent studies indicate that modulation of autophagy in concert with apoptosis induction may provide a promising novel strategy in breast cancer treatment. Apoptosis and autophagy are two tightly regulated distinct cellular processes. To maintain tissue homeostasis abnormal cells are disposed largely by means of apoptosis. Autophagy, however, contributes to tissue homeostasis and cell fitness by scavenging of damaged organelles, lipids, proteins, and DNA. Defects in autophagy promote tumorigenesis, whereas upon tumor formation rapidly proliferating cancer cells may rely on autophagy to survive. Given that evasion of apoptosis is one of the characteristic hallmarks of cancer cells, inhibiting autophagy and promoting apoptosis can negatively influence cancer cell survival and increase cell death. Hence, combination of antiautophagic agents with the enhancement of apoptosis may restore apoptosis and provide a therapeutic advantage against breast cancer. In this review, we discuss the cross-talk of autophagy and apoptosis and the diverse facets of autophagy in breast cancer cells leading to novel models for more effective therapeutic strategies.
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Impact of Primary RPE Cells in a Porcine Organotypic Co-Cultivation Model. Biomolecules 2022; 12:biom12070990. [PMID: 35883547 PMCID: PMC9313304 DOI: 10.3390/biom12070990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/04/2022] [Accepted: 07/13/2022] [Indexed: 12/10/2022] Open
Abstract
The pathological events of age-related macular degeneration are characterized by degenerative processes involving the photoreceptor cells, retinal pigment epithelium (RPE), and the Bruch's membrane as well as choroidal alterations. To mimic in vivo interactions between photoreceptor cells and RPE cells ex vivo, complex models are required. Hence, the aim of this study was to establish a porcine organotypic co-cultivation model and enlighten the interactions of photoreceptor and RPE cells, with a special emphasis on potential neuroprotective effects. Porcine neuroretina explants were cultured with primary porcine RPE cells (ppRPE) or medium derived from these cells (=conditioned medium). Neuroretina explants cultured alone served as controls. After eight days, RT-qPCR and immunohistology were performed to analyze photoreceptors, synapses, macroglia, microglia, complement factors, and pro-inflammatory cytokines (e.g., IL1B, IL6, TNF) in the neuroretina samples. The presence of ppRPE cells preserved photoreceptors, whereas synaptical density was unaltered. Interestingly, on an immunohistological as well as on an mRNA level, microglia and complement factors were comparable in all groups. Increased IL6 levels were noted in ppRPE and conditioned medium samples, while TNF was only upregulated in the ppRPE group. IL1B was elevated in conditioned medium samples. In conclusion, a co-cultivation of ppRPE cells and neuroretina seem to have beneficial effects on the neuroretina, preserving photoreceptors and maintaining synaptic vesicles in vitro. This organotypic co-cultivation model can be used to investigate the complex interactions between the retina and RPE cells, gain further insight into neurodegenerative pathomechanisms occurring in retinal diseases, and evaluate potential therapeutics.
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