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Jung BC, Lim J, Kim SH, Kim YS. Caspase-8 Potentiates Triglyceride (TG)-Induced Cell Death of THP-1 Macrophages via a Positive Feedback Loop. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2021. [DOI: 10.15324/kjcls.2021.53.2.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Byung Chul Jung
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, United States
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea
| | - Jaewon Lim
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea
- Department of Biomedical Laboratory Science, College of Rehabilitation and Health, Daegu Haany University, Gyeongsan, Korea
| | - Sung Hoon Kim
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea
- Department of Biomedical Laboratory Science, Korea Nazarene University, Cheonan, Korea
| | - Yoon Suk Kim
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea
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Egorshina AY, Zamaraev AV, Lavrik IN, Zhivotovsky BD, Kopeina GS. Caspase-2 as an Oncosupressor and Metabolism Regulator: What Life Will Bring over the Long Run? Mol Biol 2018. [DOI: 10.1134/s0026893318050060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Prokhorova EA, Zamaraev AV, Kopeina GS, Zhivotovsky B, Lavrik IN. Role of the nucleus in apoptosis: signaling and execution. Cell Mol Life Sci 2015; 72:4593-612. [PMID: 26346492 PMCID: PMC11113907 DOI: 10.1007/s00018-015-2031-y] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/06/2015] [Accepted: 08/27/2015] [Indexed: 02/06/2023]
Abstract
Since their establishment in the early 1970s, the nuclear changes upon apoptosis induction, such as the condensation of chromatin, disassembly of nuclear scaffold proteins and degradation of DNA, were, and still are, considered as the essential steps and hallmarks of apoptosis. These are the characteristics of the execution phase of apoptotic cell death. In addition, accumulating data clearly show that some nuclear events can lead to the induction of apoptosis. In particular, if DNA lesions resulting from deregulation during the cell cycle or DNA damage induced by chemotherapeutic drugs or viral infection cannot be efficiently eliminated, apoptotic mechanisms, which enable cellular transformation to be avoided, are activated in the nucleus. The functional heterogeneity of the nuclear organization allows the tight regulation of these signaling events that involve the movement of various nuclear proteins to other intracellular compartments (and vice versa) to initiate and govern apoptosis. Here, we discuss how these events are coordinated to execute apoptotic cell death.
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Affiliation(s)
- Evgeniia A Prokhorova
- Faculty of Basic Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Alexey V Zamaraev
- Faculty of Basic Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Gelina S Kopeina
- Faculty of Basic Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Boris Zhivotovsky
- Faculty of Basic Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia.
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 17177, Stockholm, Sweden.
| | - Inna N Lavrik
- Faculty of Basic Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia
- Department of Translational Inflammation, Institute of Experimental Internal Medicine, Otto von Guericke University, Magdeburg, Germany
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Wang L, Hu T, Shen J, Zhang L, Chan RLY, Lu L, Li M, Cho CH, Wu WKK. Dihydrotanshinone I induced apoptosis and autophagy through caspase dependent pathway in colon cancer. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2015; 22:1079-87. [PMID: 26547530 DOI: 10.1016/j.phymed.2015.08.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/07/2015] [Accepted: 08/08/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Dihydrotanshinone I (DHTS) was previously reported to exhibit the most potent anti-cancer activity among several tanshinones in colon cancer cells. Its cytotoxic action was reactive oxygen species (ROS) dependent but p53 independent. PURPOSE To further study the anti-cancer activity of DHTS and its molecular mechanisms of action in colon cancer both in vitro and in vivo. METHODS Caspase activity was detected by fluorescence assay. Apoptosis was detected by flow cytometry and TUNEL assay. Protein levels were analyzed by western blotting. Knockdown of target gene was achieved by siRNA transfection. Formation of LC3B puncta and activation of caspase-3 were detected by confocal fluorescence microscope. In vivo anti-colon cancer activity of DHTS was observed in xenograft tumors in NOD/SCID mice. RESULTS Anti-colon cancer activity of DHTS by inducing apoptosis and autophagy was observed both in vitro and in vivo. Mitochondria mediated caspase dependent pathway was essential in DHTS-induced cytotoxicity. The apoptosis induced by DHTS was suppressed by knockdown of apoptosis inducing factor (AIF), inhibition of caspase-3/9 but was increased after knockdown of caspase-2. Meantime, knockdown of caspase-2, pretreatment with Z-VAD-fmk or NAC (N-Acety-L-Cysteine) efficiently inhibited the autophagy induced by DHTS. A crosstalk between cytochrome c and AIF was also reported. CONCLUSION DHTS-induced caspase and ROS dependent apoptosis and autophagy were mediated by mitochondria in colon cancer. DHTS could be a promising leading compound for the development of anti-tumor agent or be developed as an adjuvant drug for colon cancer therapy.
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Affiliation(s)
- Lin Wang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China.
| | - Tao Hu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Jing Shen
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Lin Zhang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Ruby Lok-Yi Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Lan Lu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Mingxing Li
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - Chi Hin Cho
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Lo Kwee-Seong Integrated Biomedical Sciences Building, Shatin, NT, Hong Kong, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
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Analysis of the minimal specificity of caspase-2 and identification of Ac-VDTTD-AFC as a caspase-2-selective peptide substrate. Biosci Rep 2014; 34:BSR20140025. [PMID: 27919034 PMCID: PMC3966047 DOI: 10.1042/bsr20140025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 02/12/2014] [Accepted: 02/13/2014] [Indexed: 11/17/2022] Open
Abstract
Caspase-2 is an evolutionarily conserved but enigmatic protease whose biological role remains poorly understood. To date, research into the functions of caspase-2 has been hampered by an absence of reagents that can distinguish its activity from that of the downstream apoptotic caspase, caspase-3. Identification of protein substrates of caspase-2 that are efficiently cleaved within cells may also provide clues to the role of this protease. We used a yeast-based transcriptional reporter system to define the minimal substrate specificity of caspase-2. The resulting profile enabled the identification of candidate novel caspase-2 substrates. Caspase-2 cleaved one of these proteins, the cancer-associated transcription factor Runx1, although with relatively low efficiency. A fluorogenic peptide was derived from the sequence most efficiently cleaved in the context of the transcriptional reporter. This peptide, Ac-VDTTD-AFC, was efficiently cleaved by purified caspase-2 and auto-activating caspase-2 in mammalian cells, and exhibited better selectivity for caspase-2 relative to caspase-3 than reagents that are currently available. We suggest that this reagent, used in parallel with the traditional caspase-3 substrate Ac-DEVD-AFC, will enable researchers to monitor caspase-2 activity in cell lysates and may assist in the determination of stimuli that activate caspase-2 in vivo.
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