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Dobrzyn K, Kiezun M, Kopij G, Zarzecka B, Gudelska M, Kisielewska K, Zaobidna E, Makowczenko KG, Dall'Aglio C, Kamiński T, Smolińska N. Apelin-13 modulates the endometrial transcriptome of the domestic pig during implantation. BMC Genomics 2024; 25:501. [PMID: 38773369 PMCID: PMC11106924 DOI: 10.1186/s12864-024-10417-9] [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: 02/14/2024] [Accepted: 05/15/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND The peri-implantation period is a critical time during pregnancy that mostly defines the overall litter size. Most authors agree that the highest percentage of embryo mortality occurs during this time. Despite the brevity of the peri-implantation period, it is the most dynamic part of pregnancy in which the sequential and uninterrupted course of several processes is essential to the animal's reproductive success. Also then, the maternal uterine tissues undergo an intensive remodelling process, and their energy demand dramatically increases. It is believed that apelin, a member of the adipokine family, is involved in the control of female reproductive functions in response to the current metabolic state. The verified herein hypothesis assumed the modulatory effect of apelin on the endometrial tissue transcriptome on days 15 to 16 of gestation (beginning of implantation). RESULTS The analysis of data obtained during RNA-seq (Illumina HiSeq2500) of endometrial slices treated and untreated with apelin (n = 4 per group) revealed changes in the expression of 68 genes (39 up-regulated and 29 down-regulated in the presence of apelin), assigned to 240 gene ontology terms. We also revealed changes in the frequency of alternative splicing events (397 cases), as well as single nucleotide variants (1,818 cases) in the presence of the adipokine. The identified genes were associated, among others, with the composition of the extracellular matrix, apoptosis, and angiogenesis. CONCLUSIONS The obtained results indicate a potential role of apelin in the regulation of uterine tissue remodelling during the peri-implantation period.
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Affiliation(s)
- Kamil Dobrzyn
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland.
| | - Marta Kiezun
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
| | - Grzegorz Kopij
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
| | - Barbara Zarzecka
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
| | - Marlena Gudelska
- Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Aleja Warszawska 30, Olsztyn, 10-082, Poland
| | - Katarzyna Kisielewska
- Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Aleja Warszawska 30, Olsztyn, 10-082, Poland
| | - Ewa Zaobidna
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
| | - Karol G Makowczenko
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Department of Reproductive Immunology and Pathology, Tuwima 10, Olsztyn, 10-748, Poland
| | - Cecilia Dall'Aglio
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, Perugia, 06126, Italy
| | - Tadeusz Kamiński
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
| | - Nina Smolińska
- Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, Olsztyn, 10-719, Poland
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2
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Döring M, Brux M, Paszkowski-Rogacz M, Guillem-Gloria PM, Buchholz F, Pisabarro MT, Theis M. Nucleolar protein TAAP1/ C22orf46 confers pro-survival signaling in non-small cell lung cancer. Life Sci Alliance 2024; 7:e202302257. [PMID: 38228372 DOI: 10.26508/lsa.202302257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
Tumor cells subvert immune surveillance or lytic stress by harnessing inhibitory signals. Hence, bispecific antibodies have been developed to direct CTLs to the tumor site and foster immune-dependent cytotoxicity. Although applied with success, T cell-based immunotherapies are not universally effective partially because of the expression of pro-survival factors by tumor cells protecting them from apoptosis. Here, we report a CRISPR/Cas9 screen in human non-small cell lung cancer cells designed to identify genes that confer tumors with the ability to evade the cytotoxic effects of CD8+ T lymphocytes engaged by bispecific antibodies. We show that the gene C22orf46 facilitates pro-survival signals and that tumor cells devoid of C22orf46 expression exhibit increased susceptibility to T cell-induced apoptosis and stress by genotoxic agents. Although annotated as a non-coding gene, we demonstrate that C22orf46 encodes a nucleolar protein, hereafter referred to as "Tumor Apoptosis Associated Protein 1," up-regulated in lung cancer, which displays remote homologies to the BH domain containing Bcl-2 family of apoptosis regulators. Collectively, the findings establish TAAP1/C22orf46 as a pro-survival oncogene with implications to therapy.
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Affiliation(s)
- Marietta Döring
- https://ror.org/042aqky30 National Center for Tumor Diseases/University Cancer Center (NCT/UCC): German Cancer Research Center (DKFZ) Heidelberg, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Melanie Brux
- https://ror.org/042aqky30 National Center for Tumor Diseases/University Cancer Center (NCT/UCC): German Cancer Research Center (DKFZ) Heidelberg, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- https://ror.org/00e7dfm13 Medical Systems Biologyhttps://ror.org/042aqky30 , Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Maciej Paszkowski-Rogacz
- https://ror.org/00e7dfm13 Medical Systems Biologyhttps://ror.org/042aqky30 , Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Pedro M Guillem-Gloria
- https://ror.org/042aqky30 Structural Bioinformatics, BIOTEC, Technische Universität Dresden, Dresden, Germany
| | - Frank Buchholz
- https://ror.org/042aqky30 National Center for Tumor Diseases/University Cancer Center (NCT/UCC): German Cancer Research Center (DKFZ) Heidelberg, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- https://ror.org/00e7dfm13 Medical Systems Biologyhttps://ror.org/042aqky30 , Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) Partner Site, Dresden, Germany
| | - M Teresa Pisabarro
- https://ror.org/042aqky30 Structural Bioinformatics, BIOTEC, Technische Universität Dresden, Dresden, Germany
| | - Mirko Theis
- https://ror.org/042aqky30 National Center for Tumor Diseases/University Cancer Center (NCT/UCC): German Cancer Research Center (DKFZ) Heidelberg, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- https://ror.org/00e7dfm13 Medical Systems Biologyhttps://ror.org/042aqky30 , Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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3
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Skalka GL, Tsakovska M, Murphy DJ. Kinase signalling adaptation supports dysfunctional mitochondria in disease. Front Mol Biosci 2024; 11:1354682. [PMID: 38434478 PMCID: PMC10906720 DOI: 10.3389/fmolb.2024.1354682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/15/2024] [Indexed: 03/05/2024] Open
Abstract
Mitochondria form a critical control nexus which are essential for maintaining correct tissue homeostasis. An increasing number of studies have identified dysregulation of mitochondria as a driver in cancer. However, which pathways support and promote this adapted mitochondrial function? A key hallmark of cancer is perturbation of kinase signalling pathways. These pathways include mitogen activated protein kinases (MAPK), lipid secondary messenger networks, cyclic-AMP-activated (cAMP)/AMP-activated kinases (AMPK), and Ca2+/calmodulin-dependent protein kinase (CaMK) networks. These signalling pathways have multiple substrates which support initiation and persistence of cancer. Many of these are involved in the regulation of mitochondrial morphology, mitochondrial apoptosis, mitochondrial calcium homeostasis, mitochondrial associated membranes (MAMs), and retrograde ROS signalling. This review will aim to both explore how kinase signalling integrates with these critical mitochondrial pathways and highlight how these systems can be usurped to support the development of disease. In addition, we will identify areas which require further investigation to fully understand the complexities of these regulatory interactions. Overall, this review will emphasize how studying the interaction between kinase signalling and mitochondria improves our understanding of mitochondrial homeostasis and can yield novel therapeutic targets to treat disease.
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Affiliation(s)
- George L. Skalka
- School of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Mina Tsakovska
- School of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Daniel J. Murphy
- School of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
- CRUK Scotland Institute, Glasgow, United Kingdom
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4
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Sun JKL, Wong GCN, Chow KHM. Cross-talk between DNA damage response and the central carbon metabolic network underlies selective vulnerability of Purkinje neurons in ataxia-telangiectasia. J Neurochem 2023; 166:654-677. [PMID: 37319113 DOI: 10.1111/jnc.15881] [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: 04/30/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/17/2023]
Abstract
Cerebellar ataxia is often the first and irreversible outcome in the disease of ataxia-telangiectasia (A-T), as a consequence of selective cerebellar Purkinje neuronal degeneration. A-T is an autosomal recessive disorder resulting from the loss-of-function mutations of the ataxia-telangiectasia-mutated ATM gene. Over years of research, it now becomes clear that functional ATM-a serine/threonine kinase protein product of the ATM gene-plays critical roles in regulating both cellular DNA damage response and central carbon metabolic network in multiple subcellular locations. The key question arises is how cerebellar Purkinje neurons become selectively vulnerable when all other cell types in the brain are suffering from the very same defects in ATM function. This review intended to comprehensively elaborate the unexpected linkages between these two seemingly independent cellular functions and the regulatory roles of ATM involved, their integrated impacts on both physical and functional properties, hence the introduction of selective vulnerability to Purkinje neurons in the disease will be addressed.
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Affiliation(s)
- Jacquelyne Ka-Li Sun
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong
| | - Genper Chi-Ngai Wong
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong
| | - Kim Hei-Man Chow
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong
- Gerald Choa Neuroscience Institute, The Chinese University of Hong Kong, Hong Kong
- Nexus of Rare Neurodegenerative Diseases, The Chinese University of Hong Kong, Hong Kong
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Abstract
The intrinsic apoptosis pathway is controlled by the BCL-2 family of proteins. Although the pro-survival members of this family can help cancer cells evade apoptosis, they may also produce apoptotic vulnerabilities that can potentially be exploited therapeutically. Apoptotic vulnerabilities can be driven by endogenous factors including altered genetics, signaling, metabolism, structure and lineage or differentiation state as well as imposed factors, the most prominent being exposure to anti-cancer agents. The recent development of BH3 mimetics that inhibit pro-survival BCL-2 family proteins has allowed these apoptotic vulnerabilities to be targeted with demonstrable clinical success. Here, we review the key concepts that are vital for understanding, uncovering, and exploiting apoptotic vulnerabilities in cancer for the potential improvement of patient outcomes.
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Affiliation(s)
- Kristopher A. Sarosiek
- Molecular and Integrative Physiological Sciences Program, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Kris C. Wood
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
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6
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Yan S, Zhou J, Zhang H, Lin Z, Khambu B, Liu G, Ma M, Chen X, Chalasani N, Yin X. Promotion of diet-induced obesity and metabolic syndromes by BID is associated with gut microbiota. Hepatol Commun 2022; 6:3349-3362. [PMID: 36382356 PMCID: PMC9701492 DOI: 10.1002/hep4.2052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/23/2022] [Accepted: 07/01/2022] [Indexed: 11/17/2022] Open
Abstract
A growing body of evidence has indicated an expanding functional network of B-cell lymphoma 2 (BCL-2) family proteins beyond regulation of cell death and survival. Here, we examined the role and mechanisms of BH3 interacting-domain death agonist (BID), a pro-death BCL-2 family member, in the development of diet-induced metabolic dysfunction. Mice deficient in bid (bid-/- ) were resistant to high-fat diet (HFD)-induced obesity, hepatic steatosis, and dyslipidemia with an increased insulin sensitivity. Indirect calorimetry analysis indicated that bid deficiency increased metabolic rate and decreased respiratory exchange ratio, suggesting a larger contribution of lipids to overall energy expenditure. While expression of several genes related to lipid accumulation was only increased in wild-type livers, metabolomics analysis revealed a consistent reduction in fatty acids but an increase in certain sugars and Krebs cycle intermediates in bid-/- livers. Gut microbiota (GM) analysis indicated that HFD induced gut dysbiosis with differential patterns in wild-type and in bid-/- mice. Notably, abrogation of GM by antibiotics during HFD feeding eliminated the beneficial effects against obesity and hepatic steatosis conferred by the bid deficiency. Conclusion: These results indicate that the protective role of bid-deficiency against diet-induced metabolic dysfunction interacts with the function of GM.
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Affiliation(s)
- Shengmin Yan
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA,Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA
| | - Jun Zhou
- Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA,Department of Emergency MedicineThe Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Hao Zhang
- Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA,Digestive Health InstituteUniversity of IllinoisUrbanain IllinoisUSA
| | - Zhen Lin
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA
| | - Bilon Khambu
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA,Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA
| | - Gang Liu
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA
| | - Michelle Ma
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA
| | - Xiaoyun Chen
- Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA
| | - Naga Chalasani
- Department of MedicineIndiana University School of MedicineIndianapolisIndianaUSA
| | - Xiao‐Ming Yin
- Department of Pathology and Laboratory MedicineTulane University School of MedicineNew OrleansLouisianaUSA,Department of Pathology and Laboratory MedicineIndiana University School of MedicineIndianapolisIndianaUSA
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7
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Zveik O, Rechtman A, Haham N, Adini I, Canello T, Lavon I, Brill L, Vaknin-Dembinsky A. Sera of Neuromyelitis Optica Patients Increase BID-Mediated Apoptosis in Astrocytes. Int J Mol Sci 2022; 23:ijms23137117. [PMID: 35806122 PMCID: PMC9266359 DOI: 10.3390/ijms23137117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 11/30/2022] Open
Abstract
Neuromyelitis optica (NMO) is a rare disease usually presenting with bilateral or unilateral optic neuritis with simultaneous or sequential transverse myelitis. Autoantibodies directed against aquaporin-4 (AQP4-IgG) are found in most patients. They are believed to cross the blood−brain barrier, target astrocytes, activate complement, and eventually lead to astrocyte destruction, demyelination, and axonal damage. However, it is still not clear what the primary pathological event is. We hypothesize that the interaction of AQP4-IgG and astrocytes leads to DNA damage and apoptosis. We studied the effect of sera from seropositive NMO patients and healthy controls (HCs) on astrocytes’ immune gene expression and viability. We found that sera from seropositive NMO patients led to higher expression of apoptosis-related genes, including BH3-interacting domain death agonist (BID), which is the most significant differentiating gene (p < 0.0001), and triggered more apoptosis in astrocytes compared to sera from HCs. Furthermore, NMO sera increased DNA damage and led to a higher expression of immunological genes that interact with BID (TLR4 and NOD-1). Our findings suggest that sera of seropositive NMO patients might cause astrocytic DNA damage and apoptosis. It may be one of the mechanisms implicated in the primary pathological event in NMO and provide new avenues for therapeutic intervention.
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Affiliation(s)
- Omri Zveik
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Ariel Rechtman
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Nitzan Haham
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Irit Adini
- Department of Surgery, Harvard Medical School, Center for Engineering in Medicine & Surgery, Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA;
| | - Tamar Canello
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
- Leslie and Michael Gaffin Center for Neuro-Oncology, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - Iris Lavon
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
- Leslie and Michael Gaffin Center for Neuro-Oncology, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - Livnat Brill
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Adi Vaknin-Dembinsky
- Department of Neurology and Laboratory of Neuroimmunology, The Agnes-Ginges Center for Neurogenetics, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; (O.Z.); (A.R.); (N.H.); (T.C.); (I.L.); (L.B.)
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
- Correspondence: ; Tel.: +972-2-677-7741
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Caspase-2 is a mediator of apoptotic signaling in response to gemtuzumab ozogamicin in acute myeloid leukemia. Cell Death Dis 2022; 8:284. [PMID: 35690610 PMCID: PMC9188552 DOI: 10.1038/s41420-022-01071-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 05/02/2022] [Accepted: 05/26/2022] [Indexed: 11/27/2022]
Abstract
The antibody conjugate gemtuzumab ozogamicin (GO; Mylotarg®) provides targeted therapy of acute myeloid leukemia (AML), with recent approvals for patients with CD33-positive disease at diagnosis or relapse, as monotherapy or combined with chemotherapeutics. While its clinical efficacy is well documented, the molecular routes by which GO induces AML cell death warrant further analyses. We have earlier reported that this process is initiated via mitochondria-mediated caspase activation. Here we provide additional data, focusing on the involvement of caspase-2 in this mechanism. We show that this enzyme plays an important role in triggering apoptotic death of human AML cells after exposure to GO or its active moiety calicheamicin. Accordingly, the caspase-2 inhibitor z-VDVAD-fmk reduced GO-induced caspase-3 activation. This finding was validated with shRNA and siRNA targeting caspase-2, resulting in reduced caspase-3 activation and cleavage of poly [ADP-ribose] polymerase 1 (PARP-1). We previously demonstrated that GO-induced apoptosis included a conformational change of Bax into a pro-apoptotic state. Present data reveal that GO-treatment also induced Bid cleavage, which was partially reduced by caspase-2 specific inhibition while the effect on GO-induced Bax conformational change remained unaltered. In mononuclear cells isolated from AML patients that responded to GO treatment in vitro, processing of caspase-2 was evident, whereas in cells from an AML patient refractory to treatment no such processing was seen. When assessing diagnostic samples from 22 AML patients, who all entered complete remission (CR) following anthracycline-based induction therapy, and comparing patients with long versus those with short CR duration no significant differences in baseline caspase-2 or caspase-3 full-length protein expression levels were found. In summary, we demonstrate that GO triggers caspase-2 cleavage in human AML cells and that the subsequent apoptosis of these cells in part relies on caspase-2. These findings may have future clinical implications.
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9
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Mattoo AR, Jessup JM. MCL‐1 interacts with MOF and BID to regulate H4K16 acetylation and homologous recombination repair. Cell Biol Int 2022; 46:1196-1203. [DOI: 10.1002/cbin.11831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/05/2022] [Accepted: 02/15/2022] [Indexed: 11/06/2022]
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Stress Relief Techniques: p38 MAPK Determines the Balance of Cell Cycle and Apoptosis Pathways. Biomolecules 2021; 11:biom11101444. [PMID: 34680077 PMCID: PMC8533283 DOI: 10.3390/biom11101444] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/23/2021] [Accepted: 09/30/2021] [Indexed: 12/18/2022] Open
Abstract
Protein signaling networks are formed from diverse and inter-connected cell signaling pathways converging into webs of function and regulation. These signaling pathways both receive and conduct molecular messages, often by a series of post-translation modifications such as phosphorylation or through protein-protein interactions via intrinsic motifs. The mitogen activated protein kinases (MAPKs) are components of kinase cascades that transmit signals through phosphorylation. There are several MAPK subfamilies, and one subfamily is the stress-activated protein kinases, which in mammals is the p38 family. The p38 enzymes mediate a variety of cellular outcomes including DNA repair, cell survival/cell fate decisions, and cell cycle arrest. The cell cycle is itself a signaling system that precisely controls DNA replication, chromosome segregation, and cellular division. Another indispensable cell function influenced by the p38 stress response is programmed cell death (apoptosis). As the regulators of cell survival, the BCL2 family of proteins and their dynamics are exquisitely sensitive to cell stress. The BCL2 family forms a protein-protein interaction network divided into anti-apoptotic and pro-apoptotic members, and the balance of binding between these two sides determines cell survival. Here, we discuss the intersections among the p38 MAPK, cell cycle, and apoptosis signaling pathways.
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11
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Yao W, Jia X, Xu L, Li S, Wei L. MicroRNA-2053 involves in the progression of esophageal cancer by targeting KIF3C. Cell Cycle 2021; 20:1163-1172. [PMID: 34057012 DOI: 10.1080/15384101.2021.1929675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
This study aimed to explore the role of micorRNA-2053 in esophageal cancer development. The expression level of miR-2053 in esophageal cancer cell lines was detected. After cell transfection, the effects of miR-2053 overexpression on proliferation, apoptosis, migration and invasion of esophageal cancer cells were determined. Moreover, the potential molecular mechanism was explored by measuring the epithelial-mesenchymal transition (EMT) and apoptosis-related proteins. Luciferase reporter assay was conducted to investigate the target gene of miR-2053. The protein expressions of PI3K/AKT pathway associated factors were detected after overexpression of miR-2053 or administration with the pathway inhibitor LY294002. The miR-2053 was downregulated in esophageal cancer cell lines. Overexpression of miR-2053 inhibited cell proliferation, migration and invasion while promoted apoptosis. Molecular mechanism elucidated that miR-2053 could reduce EMT and elevate the expression of pro-apoptotic proteins. Further study found that overexpressed miR-2053 could negatively regulate KIF3C and involve in PI3K/AKT signaling pathway. Our study demonstrated the downregulation of miR-2053 in esophageal cancer. Downregulation of miR-2053 involved in the proliferation, apoptosis, migration and invasion of esophageal cancer cells through upregulating KIF3C expression and activating the PI3K/AKT signaling pathway. miR-2053 may have the potential in clinical treatment of esophageal cancer.
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Affiliation(s)
- Wenjian Yao
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Xiangbo Jia
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Lei Xu
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Saisai Li
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Li Wei
- Department of Thoracic Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
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12
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Gene Expression Alterations Associated with Oleuropein-Induced Antiproliferative Effects and S-Phase Cell Cycle Arrest in Triple-Negative Breast Cancer Cells. Nutrients 2020; 12:nu12123755. [PMID: 33297339 PMCID: PMC7762327 DOI: 10.3390/nu12123755] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/18/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023] Open
Abstract
It is known that the Mediterranean diet is effective in reducing the risk of several chronic diseases, including cancer. A critical component of the Mediterranean diet is olive oil, and the relationship between olive oil consumption and the reduced risk of cancer has been established. Oleuropein (OL) is the most prominent polyphenol component of olive fruits and leaves. This compound has been shown to have potent properties in various types of cancers, including breast cancer. In the present study, the molecular mechanism of OL was examined in two racially different triple-negative breast cancer (TNBC) cell lines-African American (AA, MDA-MB-468) and Caucasian American (CA, MDA-MB-231). The data obtained showed that OL effectively inhibits cell growth in both cell lines, concomitant with S-phase cell cycle arrest-mediated apoptosis. The results also showed that OL-treated MDA-MB-468 cells were two-fold more sensitive to OL antiproliferative effect than MDA-MB-231 cells were. At lower concentrations, OL modified the expression of many apoptosis-involved genes. OL was more effective in MDA-MB-468, compared to MDA-MB-231 cells, in terms of the number and the fold-change of the altered genes. In MDA-MB-468 cells, OL induced a noticeable transcription activation in fourteen genes, including two members of the caspase family: caspase 1 (CASP1) and caspase 14 (CASP14); two members of the TNF receptor superfamily: Fas-associated via death domain (FADD) and TNF receptor superfamily 21 (TNFRSF21); six other proapoptotic genes: growth arrest and DNA damage-inducible 45 alpha (GADD45A), cytochrome c somatic (CYCS), BCL-2 interacting protein 2 (BNIP2), BCL-2 interacting protein 3 (BNIP3), BH3 interacting domain death agonist (BID), and B-cell lymphoma/leukemia 10 (BCL10); and the CASP8 and FADD-like apoptosis regulator (CFLAR) gene. Moreover, in MDA-MB-468 cells, OL induced a significant upregulation in two antiapoptotic genes: bifunctional apoptosis regulator (BFAR) and B-Raf proto-oncogene (BRAF) and a baculoviral inhibitor of apoptosis (IAP) repeat-containing 3 (BIRC3). On the contrary, in MDA-MB-231 cells, OL showed mixed impacts on gene expression. OL significantly upregulated the mRNA expression of four genes: BIRC3, receptor-interacting serine/threonine kinase 2 (RIPK2), TNF receptor superfamily 10A (TNFRSF10A), and caspase 4 (CASP4). Additionally, another four genes were repressed, including caspase 6 (CASP6), pyrin domain (PYD), and caspase recruitment domain (CARD)-containing (PAYCARD), baculoviral IAP repeat-containing 5 (BIRC5), and the most downregulated TNF receptor superfamily member 11B (TNFRSF11B, 16.34-fold). In conclusion, the data obtained indicate that the two cell lines were markedly different in the anticancer effect and mechanisms of oleuropein's ability to alter apoptosis-related gene expressions. The results obtained from this study should also guide the potential utilization of oleuropein as an adjunct therapy for TNBC to increase chemotherapy effectiveness and prevent cancer progression.
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Role of Bcl-2 Family Proteins in Photodynamic Therapy Mediated Cell Survival and Regulation. Molecules 2020; 25:molecules25225308. [PMID: 33203053 PMCID: PMC7696921 DOI: 10.3390/molecules25225308] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/20/2022] Open
Abstract
Photodynamic therapy (PDT) is a treatment modality that involves three components: combination of a photosensitizer, light and molecular oxygen that leads to localized formation of reactive oxygen species (ROS). The ROS generated from this promising therapeutic modality can be lethal to the cell and leads to consequential destruction of tumor cells. However, sometimes the ROS trigger a stress response survival mechanism that helps the cells to cope with PDT-induced damage, resulting in resistance to the treatment. One preferred mechanism of cell death induced by PDT is apoptosis, and B-cell lymphoma 2 (Bcl-2) family proteins have been described as a major determinant of life or death decision of the death pathways. Apoptosis is a cellular self-destruction mechanism to remove old cells through the biological event of tissue homeostasis. The Bcl-2 family proteins act as a critical mediator of a life–death decision of cells in maintaining tissue homeostasis. There are several reports that show cancer cells developing resistance due to the increased interaction of the pro-survival Bcl-2 family proteins. However, the key mechanisms leading to apoptosis evasion and drug resistance have not been adequately understood. Therefore, it is critical to understand the mechanisms of PDT resistance, as well as the Bcl-2 family proteins, to give more insight into the treatment outcomes. In this review, we describe the role of Bcl-2 gene family proteins’ interaction in response to disease progression and PDT-induced resistance mechanisms.
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14
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Awah CU, Chen L, Bansal M, Mahajan A, Winter J, Lad M, Warnke L, Gonzalez-Buendia E, Park C, Zhang D, Feldstein E, Yu D, Zannikou M, Balyasnikova IV, Martuscello R, Konerman S, Győrffy B, Burdett KB, Scholtens DM, Stupp R, Ahmed A, Hsu P, Sonabend AM. Ribosomal protein S11 influences glioma response to TOP2 poisons. Oncogene 2020; 39:5068-5081. [PMID: 32528131 PMCID: PMC7646677 DOI: 10.1038/s41388-020-1342-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 05/22/2020] [Accepted: 05/29/2020] [Indexed: 12/26/2022]
Abstract
Topoisomerase II poisons are one of the most common class of chemotherapeutics used in cancer. We and others had shown that a subset of glioblastomas (GBM), the most malignant of all primary brain tumors in adults, are responsive to TOP2 poisons. To identify genes that confer susceptibility to this drug in gliomas, we performed a genome-scale CRISPR knockout screen with etoposide. Genes involved in protein synthesis and DNA damage were implicated in etoposide susceptibility. To define potential biomarkers for TOP2 poisons, CRISPR hits were overlapped with genes whose expression correlates with susceptibility to this drug across glioma cell lines, revealing ribosomal protein subunit RPS11, 16, 18 as putative biomarkers for response to TOP2 poisons. Loss of RPS11 led to resistance to etoposide and doxorubicin and impaired the induction of pro-apoptotic gene APAF1 following treatment. The expression of these ribosomal subunits was also associated with susceptibility to TOP2 poisons across cell lines from gliomas and multiple other cancers.
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Affiliation(s)
- Chidiebere U Awah
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Li Chen
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | | | - Aayushi Mahajan
- Department of Neurological Surgery, Columbia University Medical Center, Columbia University, New York City, NY, USA
| | - Jan Winter
- Functional Genomics and Signaling, German Center for Cancer Research, Heidelberg, Germany
| | - Meeki Lad
- Mailman School of Public Health, Columbia University, New York City, NY, USA
| | - Louisa Warnke
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Edgar Gonzalez-Buendia
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Cheol Park
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Daniel Zhang
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Eric Feldstein
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Dou Yu
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Markella Zannikou
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Irina V Balyasnikova
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Regina Martuscello
- Department of Pathology, Columbia University Medical Centre, Columbia University, New York City, NY, USA
| | | | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Hungarian Academy of Sciences, Budapest, Hungary.,2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Kirsten B Burdett
- Department of Preventive Medicine, Northwestern University, Chicago, IL, USA
| | - Denise M Scholtens
- Department of Preventive Medicine, Northwestern University, Chicago, IL, USA
| | - Roger Stupp
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Atique Ahmed
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States
| | - Patrick Hsu
- Molecular and Cell Biology, Salk Institute, La Jolla, CA, USA
| | - Adam M Sonabend
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University , Chicago, IL, United States.
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15
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Dobrzyn K, Kiezun M, Szeszko K, Kisielewska K, Rytelewska E, Gudelska M, Zaobidna E, Bors K, Kopij G, Szymanska K, Kaminska B, Kaminski T, Smolinska N. Orexin B affects the transcriptome of incubated in vitro porcine endometrial explants from the early-implantation period. Reprod Domest Anim 2020; 56:239-253. [PMID: 32402144 DOI: 10.1111/rda.13700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/23/2020] [Accepted: 05/05/2020] [Indexed: 01/11/2023]
Abstract
This study determined the effect of orexin B (OXB) on the porcine endometrial transcriptome during the embryo attachment phase. Microarray analyses of gene ontology (GO), biological pathways, networks and differentially expressed genes (DEG) were performed. Orexin B influenced the expression of 887 genes (fold change > 1.2; p < .05): 620 genes were up-regulated, and 267 were down-regulated. The analysis of the relationship between DEG revealed that OXB interacts with genes linked with processes such as cell hormone binding, regulation of hormone levels, lipid transport, steroid metabolic processes, the apoptotic signalling pathway and the acute inflammatory response, which are pivotal for reproductive success. Orexin B played a bivalent role in the early-pregnant uterus by limiting the pregnancy outcome, promoting embryo development, suppressing the immune system and, consequently, preventing embryo rejection. These findings suggest that OXB could be responsible for the proper course of gestation by adapting litter size to the metabolic status of the maternal organism.
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Affiliation(s)
- Kamil Dobrzyn
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Marta Kiezun
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Karol Szeszko
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Katarzyna Kisielewska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Edyta Rytelewska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Marlena Gudelska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Ewa Zaobidna
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Kinga Bors
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Grzegorz Kopij
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Karolina Szymanska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Barbara Kaminska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Tadeusz Kaminski
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Nina Smolinska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
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16
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Glab JA, Cao Z, Puthalakath H. Bcl-2 family proteins, beyond the veil. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 351:1-22. [PMID: 32247577 DOI: 10.1016/bs.ircmb.2019.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Apoptosis is an important part of both health and disease and is often regulated by the BCL-2 family of proteins. These proteins are either pro- or anti-apoptotic, existing in a delicate balance during homeostasis. They are best known for their role in regulating the activation of caspases and the execution of a cell in response to a variety of stimuli. However, it is often forgotten that these BCL-2 family proteins also have important roles to play in cell maintenance that are not associated with apoptosis. These include roles in regulating processes such as cell cycle progression, mitochondrial function, autophagy, intracellular calcium concentration, glucose and lipid metabolism, and the unfolded protein response. In addition to these established alternate functions, further discoveries are being made that have potential therapeutic benefits in diseases such as cancer. BOK, a BCL-2 family protein thought comparable to multidomain pro-apoptotic proteins BAX and BAK, has recently been identified as a key player in metabolism of and resistance to the commonly used chemotherapeutic 5-FU. As a result of such findings, which could see the potential use of BOK as a biomarker for 5-FU sensitivity or mimetic molecules as a resensitization strategy, new targets and mechanisms of pathology may arise from further investigation into the realm of alternate functions of BCL-2 family proteins.
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Affiliation(s)
- Jason Andrew Glab
- Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, Australia
| | - Zhipeng Cao
- Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, Australia
| | - Hamsa Puthalakath
- Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, Australia.
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17
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Escudero S, Zaganjor E, Lee S, Mill CP, Morgan AM, Crawford EB, Chen J, Wales TE, Mourtada R, Luccarelli J, Bird GH, Steidl U, Engen JR, Haigis MC, Opferman JT, Walensky LD. Dynamic Regulation of Long-Chain Fatty Acid Oxidation by a Noncanonical Interaction between the MCL-1 BH3 Helix and VLCAD. Mol Cell 2019; 69:729-743.e7. [PMID: 29499131 DOI: 10.1016/j.molcel.2018.02.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 12/21/2017] [Accepted: 02/01/2018] [Indexed: 01/08/2023]
Abstract
MCL-1 is a BCL-2 family protein implicated in the development and chemoresistance of human cancer. Unlike its anti-apoptotic homologs, Mcl-1 deletion has profound physiologic consequences, indicative of a broader role in homeostasis. We report that the BCL-2 homology 3 (BH3) α helix of MCL-1 can directly engage very long-chain acyl-CoA dehydrogenase (VLCAD), a key enzyme of the mitochondrial fatty acid β-oxidation (FAO) pathway. Proteomic analysis confirmed that the mitochondrial matrix isoform of MCL-1 (MCL-1Matrix) interacts with VLCAD. Mcl-1 deletion, or eliminating MCL-1Matrix alone, selectively deregulated long-chain FAO, causing increased flux through the pathway in response to nutrient deprivation. Transient elevation in MCL-1 upon serum withdrawal, a striking increase in MCL-1 BH3/VLCAD interaction upon palmitic acid titration, and direct modulation of enzymatic activity by the MCL-1 BH3 α helix are consistent with dynamic regulation. Thus, the MCL-1 BH3 interaction with VLCAD revealed a separable, gain-of-function role for MCL-1 in the regulation of lipid metabolism.
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Affiliation(s)
- Silvia Escudero
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Elma Zaganjor
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Susan Lee
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Christopher P Mill
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Ann M Morgan
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Emily B Crawford
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Jiahao Chen
- Departments of Medicine and Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Thomas E Wales
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Rida Mourtada
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - James Luccarelli
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Gregory H Bird
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ulrich Steidl
- Departments of Medicine and Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - John R Engen
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Marcia C Haigis
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Joseph T Opferman
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Loren D Walensky
- Department of Pediatric Oncology and the Linde Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA.
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18
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Increased Ripk1-mediated bone marrow necroptosis leads to myelodysplasia and bone marrow failure in mice. Blood 2018; 133:107-120. [PMID: 30413413 DOI: 10.1182/blood-2018-05-847335] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 10/24/2018] [Indexed: 02/07/2023] Open
Abstract
Hematopoiesis is a dynamic system that requires balanced cell division, differentiation, and death. The 2 major modes of programmed cell death, apoptosis and necroptosis, share molecular machinery but diverge in outcome with important implications for the microenvironment; apoptotic cells are removed in an immune silent process, whereas necroptotic cells leak cellular contents that incite inflammation. Given the importance of cytokine-directed cues for hematopoietic cell survival and differentiation, the impact on hematopoietic homeostasis of biasing cell death fate to necroptosis is substantial and poorly understood. Here, we present a mouse model with increased bone marrow necroptosis. Deletion of the proapoptotic Bcl-2 family members Bax and Bak inhibits bone marrow apoptosis. Further deletion of the BH3-only member Bid (to generate Vav CreBaxBakBid triple-knockout [TKO] mice) leads to unrestrained bone marrow necroptosis driven by increased Rip1 kinase (Ripk1). TKO mice display loss of progenitor cells, leading to increased cytokine production and increased stem cell proliferation and exhaustion and culminating in bone marrow failure. Genetically restoring Ripk1 to wild-type levels restores peripheral red cell counts as well as normal cytokine production. TKO bone marrow is hypercellular with abnormal differentiation, resembling the human disorder myelodysplastic syndrome (MDS), and we demonstrate increased necroptosis in MDS bone marrow. Finally, we show that Bid impacts necroptotic signaling through modulation of caspase-8-mediated Ripk1 degradation. Thus, we demonstrate that dysregulated necroptosis in hematopoiesis promotes bone marrow progenitor cell death that incites inflammation, impairs hematopoietic stem cells, and recapitulates the salient features of the bone marrow failure disorder MDS.
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19
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Salisbury-Ruf CT, Bertram CC, Vergeade A, Lark DS, Shi Q, Heberling ML, Fortune NL, Okoye GD, Jerome WG, Wells QS, Fessel J, Moslehi J, Chen H, Roberts LJ, Boutaud O, Gamazon ER, Zinkel SS. Bid maintains mitochondrial cristae structure and function and protects against cardiac disease in an integrative genomics study. eLife 2018; 7:40907. [PMID: 30281024 PMCID: PMC6234033 DOI: 10.7554/elife.40907] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/27/2018] [Indexed: 01/07/2023] Open
Abstract
Bcl-2 family proteins reorganize mitochondrial membranes during apoptosis, to form pores and rearrange cristae. In vitro and in vivo analysis integrated with human genetics reveals a novel homeostatic mitochondrial function for Bcl-2 family protein Bid. Loss of full-length Bid results in apoptosis-independent, irregular cristae with decreased respiration. Bid-/- mice display stress-induced myocardial dysfunction and damage. A gene-based approach applied to a biobank, validated in two independent GWAS studies, reveals that decreased genetically determined BID expression associates with myocardial infarction (MI) susceptibility. Patients in the bottom 5% of the expression distribution exhibit >4 fold increased MI risk. Carrier status with nonsynonymous variation in Bid’s membrane binding domain, BidM148T, associates with MI predisposition. Furthermore, Bid but not BidM148T associates with Mcl-1Matrix, previously implicated in cristae stability; decreased MCL-1 expression associates with MI. Our results identify a role for Bid in homeostatic mitochondrial cristae reorganization, that we link to human cardiac disease. Cells contain specialized structures called mitochondria, which help to convert fuel into energy. These tiny energy factories have a unique double membrane, with a smooth outer and a folded inner lining. The folds, called cristae, provide a scaffold for the molecular machinery that produces chemical energy that the cell can use. The cristae are dynamic, and can change shape, condensing to increase energy output. Mitochondria also play a role in cell death. In certain situations, cristae can widen and release the proteins held within their folds. This can trigger a program of self-destruction in the cell. A family of proteins called Bcl-2 control such a ‘programmed cell death’ through the release of mitochondrial proteins. Some family members, including a protein called Bid, can reorganize cristae to regulate this cell-death program. When cells die, Bid proteins that had been split move to the mitochondria. But, even when cells are healthy, Bid molecules that are intact are always there, suggesting that this form of the protein may have another purpose. To investigate this further, Salisbury-Ruf, Bertram et al. used mice with Bid, and mice that lacked the protein. Without Bid, cells – including heart cells – struggled to work properly and used less oxygen than their normal counterparts. A closer look using electron microscopy revealed abnormalities in the cristae. However, adding ‘intact’ Bid proteins back in to the deficient cells restored them to normal. Moreover, without Bid, the mice hearts were less able to respond to an increased demand for energy. This decreased their performance and caused the formation of scars in the heart muscle called fibrosis, similar to a pattern observed in human patients following a heart attack. DNA data from an electronic health record database revealed a link between low levels of Bid genes and heart attack in humans, which was confirmed in further studies. In addition, a specific mutation in the Bid gene was found to affect its ability to regulate the formation of proper cristae. Combining evidence from mice with human genetics revealed new information about heart diseases. Mitochondrial health may be affected by a combination of specific variations in genes and changes in the Bid protein, which could affect heart attack risk. Understanding more about this association could help to identify and potentially reduce certain risk factors for heart attack.
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Affiliation(s)
- Christi T Salisbury-Ruf
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, United States
| | - Clinton C Bertram
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, United States
| | - Aurelia Vergeade
- Department of Pharmacology, Vanderbilt University, Nashville, United States
| | - Daniel S Lark
- Molecular Physiology and Biophysics, Vanderbilt University, Nashville, United States
| | - Qiong Shi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
| | - Marlene L Heberling
- Department of Biological Sciences, Vanderbilt University, Nashville, United States
| | - Niki L Fortune
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
| | - G Donald Okoye
- Division of Cardiovascular Medicine and Cardio-oncology Program, Vanderbilt University Medical Center, Nashville, United States
| | - W Gray Jerome
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, United States
| | - Quinn S Wells
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
| | - Josh Fessel
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
| | - Javid Moslehi
- Division of Cardiovascular Medicine and Cardio-oncology Program, Vanderbilt University Medical Center, Nashville, United States
| | - Heidi Chen
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, United States
| | - L Jackson Roberts
- Department of Pharmacology, Vanderbilt University, Nashville, United States.,Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
| | - Olivier Boutaud
- Department of Pharmacology, Vanderbilt University, Nashville, United States
| | - Eric R Gamazon
- Division of Genetic Medicine, Vanderbilt University Medical Center, Nashville, United States.,Clare Hall, University of Cambridge, Cambridge, United Kingdom
| | - Sandra S Zinkel
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, United States.,Department of Medicine, Vanderbilt University Medical Center, Nashville, United States
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In vivo selection with lentiviral expression of Bcl2 T69A/S70A/S87A mutant in hematopoietic stem cell-transplanted mice. Gene Ther 2018. [PMID: 29523881 DOI: 10.1038/s41434-018-0008-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Current in vivo selections for hematopoietic stem cell (HSC)-based gene therapy are drug dependent and not without risk of cytotoxicity or tumorigenesis. We developed a new in vivo selection system with the non-phosphorylatable Bcl2 mutant Bcl2T69A/S70A/S87A (Bcl2AAA), which makes in vivo selection drug independent and without risk of cytotoxicity or tumorigenesis. We demonstrated in HSC-transplanted mice that Bcl2AAA facilitated efficient in vivo selection in the absence of any exogenously applied drugs under both myeloablative and non-myeloablative conditioning. In mice transplanted with retrovirally transduced sca-1-positive bone marrow cells, the marked cell level increased from 26.38% of input transduced cells to 92.61 ± 0.95% of peripheral blood cells for myeloablative transplantation or to 37.82 ± 6.35% for non-myeloablative transplantation 6 months after transplantation. Bcl2AAA did not induce tumorigenesis and does not influence hematopoiesis and the function of the reconstituted blood system. However, the high-level constitutive expression of Bcl2AAA mediated by retroviral vector induced exhaustion of the marked cells after tertiary transplantation. Fortunately, low-level constitutive expression of Bcl2AAA driven by an internal promoter in lentiviral vector could both maintain the marked cell level (24.13 ± 5.27%, 27.17 ± 5.51%, 24.33 ± 5.08%, and 22.07 ± 4.44% for primary, secondary, tertiary, and quaternary recipients) and avoid the exhaustion of the marked cells even in quaternary recipients. Importantly, the low-level constitutive expression of Bcl2AAA did not induce tumorigenesis. Thus, the in vivo selection employing the low-level constitutive expression of Bcl2AAA provides a general platform which is relevant for widespread applications of gene therapy.
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21
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Bhattacharyya R, Gupta P, Bandyopadhyay SK, Patro BS, Chattopadhyay S. Coralyne, a protoberberine alkaloid, causes robust photosenstization of cancer cells through ATR-p38 MAPK-BAX and JAK2-STAT1-BAX pathways. Chem Biol Interact 2018; 285:27-39. [PMID: 29486184 DOI: 10.1016/j.cbi.2018.02.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/16/2018] [Accepted: 02/23/2018] [Indexed: 12/20/2022]
Abstract
Photodynamic therapy (PDT) provides an effective cancer treatment option but it requires sufficient cellular oxygen concentration to exert its photosensitizing effects. Due to hypoxic nature of most tumors, widespread clinical application of PDT is restricted and warrants development of photosensitizers which can kill cancer cells in ROS independent manner. Previously, we reported significant enhancement of the anti-cancer property of coralyne in presence of ultraviolet-A (UVA) light exposure against several human carcinoma cell lines. This study aimed at unravelling molecular cascades of events in CUVA treatment (coralyne and UVA light)-mediated photosensitization of human skin cancer. The CUVA-treatment caused robust apoptosis of A431 cancer cells, primarily through mitochondrial and lysosomal dysfunctions. Silencing of BAX conferred a significant protection against CUVA-induced apoptosis. Both lysosomal proteases and caspase-8 activation contributed to BID cleavage. Further, our results revealed that a dual signaling axis e.g., ATR-p38 MAPK and JAK2-STAT1 pathways functioned upstream of BAX activation in apoptosis response. Moreover, transient silencing of ATR and pharmacological inhibition of p38-MAPK or JAK2 significantly abolished the effect of CUVA treatment induced BAX expression and cell death, linking the extrinsic and intrinsic pathways with the observed cell death. Our data suggest that coralyne, which is known topoisomerase-I inhibitor, may be an attractive agent for photo-chemotherapeutic treatment of human skin cancers.
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Affiliation(s)
- Rahul Bhattacharyya
- Dept. of Biochemistry, KPC Medical College & Hospital, Jadavpur, 700032, Kolkata, India
| | - Pooja Gupta
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | | | - Birija Sankar Patro
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India.
| | - Subrata Chattopadhyay
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
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22
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Popgeorgiev N, Jabbour L, Gillet G. Subcellular Localization and Dynamics of the Bcl-2 Family of Proteins. Front Cell Dev Biol 2018; 6:13. [PMID: 29497611 PMCID: PMC5819560 DOI: 10.3389/fcell.2018.00013] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/30/2018] [Indexed: 12/12/2022] Open
Abstract
Bcl-2 family proteins are recognized as major regulators of the mitochondrial pathway of apoptosis. They control the mitochondrial outer membrane permeabilization (MOMP) by directly localizing to this organelle. Further investigations demonstrated that Bcl-2 related proteins are also found in other intracellular compartments such as the endoplasmic reticulum, the Golgi apparatus, the nucleus and the peroxisomes. At the level of these organelles, Bcl-2 family proteins not only regulate MOMP in a remote fashion but also participate in major cellular processes including calcium homeostasis, cell cycle control and cell migration. With the advances of live cell imaging techniques and the generation of fluorescent recombinant proteins, it became clear that the distribution of Bcl-2 proteins inside the cell is a dynamic process which is profoundly affected by changes in the cellular microenvironment. Here, we describe the current knowledge related to the subcellular distribution of the Bcl-2 family of proteins and further emphasize on the emerging concept that this highly dynamic process is critical for cell fate determination.
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Affiliation(s)
- Nikolay Popgeorgiev
- Université de Lyon, Centre de Recherche en Cancérologie de Lyon, U1052 Institut National de la Santé et de la Recherche Médicale, UMR Centre National de la Recherche Scientifique 5286, Université Lyon I, Centre Léon Bérard, Lyon, France
| | - Lea Jabbour
- Université de Lyon, Centre de Recherche en Cancérologie de Lyon, U1052 Institut National de la Santé et de la Recherche Médicale, UMR Centre National de la Recherche Scientifique 5286, Université Lyon I, Centre Léon Bérard, Lyon, France
| | - Germain Gillet
- Université de Lyon, Centre de Recherche en Cancérologie de Lyon, U1052 Institut National de la Santé et de la Recherche Médicale, UMR Centre National de la Recherche Scientifique 5286, Université Lyon I, Centre Léon Bérard, Lyon, France.,Hospices Civils de Lyon, Laboratoire d'anatomie et Cytologie Pathologiques, Centre Hospitalier Lyon Sud, Pierre Bénite, France
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23
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Saha B, Patro BS, Koli M, Pai G, Ray J, Bandyopadhyay SK, Chattopadhyay S. trans-4,4'-Dihydroxystilbene (DHS) inhibits human neuroblastoma tumor growth and induces mitochondrial and lysosomal damages in neuroblastoma cell lines. Oncotarget 2017; 8:73905-73924. [PMID: 29088756 PMCID: PMC5650311 DOI: 10.18632/oncotarget.17879] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 03/24/2017] [Indexed: 01/07/2023] Open
Abstract
In view of the inadequacy of neuroblastoma treatment, five hydroxystilbenes and resveratrol (Resv) were screened for their cytotoxic property against human neuroblastoma cell lines. The mechanism of cytotoxic action of the most potent compound, trans-4,4'-dihydroxystilbene (DHS) was investigated in vitro using human neuroblastoma cell lines. DHS was also tested in a mouse xenograft model of human neuroblastoma tumor. The MTT, sub-G1, annexin V and clonogenic assays as well as microscopy established higher cytotoxicity of DHS than Resv to the IMR32 cell line. DHS (20 μM) induced mitochondrial membrane permeabilization (MMP) in the cells, as revealed from JC-1 staining, cytochrome c and ApaF1 release and caspases-9/3 activation. DHS also induced lysosomal membrane permeabilization (LMP) to release cathepsins B, L and D, and the cathepsins inhibitors partially reduced MMP/caspase-3 activation. The ROS, produced by DHS activated the p38 and JNK MAPKs to augment the BAX activity and BID-cleavage, and induce LMP and MMP in the cells. DHS (100 mg/kg) also inhibited human neuroblastoma tumor growth in SCID mice by 51%. Hence, DHS may be a potential chemotherapeutic option against neuroblastoma. The involvement of an independent LMP as well as a partially LMP-dependent MMP by DHS is attractive as it provides options to target both mitochondria and lysosome.
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Affiliation(s)
- Bhaskar Saha
- Vijaygarh Jyotish Ray College, Jadavpur, Kolkata 700 032, India
- S. N. Pradhan Centre for Neuroscience, Ballygunge Science College, University of Calcutta, Kolkata 700 019, India
| | - Birija Sankar Patro
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Mrunesh Koli
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Ganesh Pai
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Jharna Ray
- S. N. Pradhan Centre for Neuroscience, Ballygunge Science College, University of Calcutta, Kolkata 700 019, India
| | | | - Subrata Chattopadhyay
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
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24
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Gross A, Katz SG. Non-apoptotic functions of BCL-2 family proteins. Cell Death Differ 2017; 24:1348-1358. [PMID: 28234359 PMCID: PMC5520452 DOI: 10.1038/cdd.2017.22] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 01/26/2017] [Accepted: 01/30/2017] [Indexed: 02/06/2023] Open
Abstract
The BCL-2 family proteins are major regulators of the apoptosis process, but the mechanisms by which they regulate this process are only partially understood. It is now well documented that these proteins play additional non-apoptotic roles that are likely to be related to their apoptotic roles and to provide important clues to cracking their mechanisms of action. It seems that these non-apoptotic roles are largely related to the activation of cellular survival pathways designated to maintain or regain cellular survival, but, if unsuccessful, will switch over into a pro-apoptotic mode. These non-apoptotic roles span a wide range of processes that include the regulation of mitochondrial physiology (metabolism, electron transport chain, morphology, permeability transition), endoplasmic reticulum physiology (calcium homeostasis, unfolded protein response (UPR)), nuclear processes (cell cycle, DNA damage response (DDR)), whole-cell metabolism (glucose and lipid), and autophagy. Here we review all these different non-apoptotic roles, make an attempt to link them to the apoptotic roles, and present many open questions for future research directions in this fascinating field.
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Affiliation(s)
- Atan Gross
- Department of Biological Regulation, Weizmann Institute of Science, 100 Herzel Street, Rehovot, Israel,Department of Biological Regulation, Weizmann Institute of Science, 100 Herzel Street, Rehovot 76100, Israel. Tel: +972 8 9343656; Fax: +972 8 934 4116; E-mail:
| | - Samuel G Katz
- Department of Pathology, Yale University School of Medicine, 310 Cedar Street, Brady Memorial Laboratory 127A, New Haven, CT 06520, USA,Department of Pathology, Yale University School of Medicine, 310 Cedar Street, Brady Memorial Laboratory 127A, New Haven CT 06520, USA. Tel: +203 785 2757; E-mail:
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25
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Tuzlak S, Kaufmann T, Villunger A. Interrogating the relevance of mitochondrial apoptosis for vertebrate development and postnatal tissue homeostasis. Genes Dev 2017; 30:2133-2151. [PMID: 27798841 DOI: 10.1101/gad.289298.116] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
"Programmed cell death or 'apoptosis' is critical for organogenesis during embryonic development and tissue homeostasis in the adult. Its deregulation can contribute to a broad range of human pathologies, including neurodegeneration, cancer, or autoimmunity…" These or similar phrases have become generic opening statements in many reviews and textbooks describing the physiological relevance of apoptotic cell death. However, while the role in disease has been documented beyond doubt, facilitating innovative drug discovery, we wonder whether the former is really true. What goes wrong in vertebrate development or in adult tissue when the main route to apoptotic cell death, controlled by the BCL2 family, is impaired? Such scenarios have been mimicked by deletion of one or more prodeath genes within the BCL2 family, and gene targeting studies in mice exploring the consequences have been manifold. Many of these studies were geared toward understanding the role of BCL2 family proteins and mitochondrial apoptosis in disease, whereas fewer focused in detail on their role during normal development or tissue homeostasis, perhaps also due to an irritating lack of phenotype. Looking at these studies, the relevance of classical programmed cell death by apoptosis for development appears rather limited. Together, these many studies suggest either highly selective and context-dependent contributions of mitochondrial apoptosis or significant redundancy with alternative cell death mechanisms, as summarized and discussed here.
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Affiliation(s)
- Selma Tuzlak
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, A6020 Innsbruck, Austria
| | - Thomas Kaufmann
- Institute of Pharmacology, University of Bern, Inselspital, CH3010 Bern, Switzerland
| | - Andreas Villunger
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, A6020 Innsbruck, Austria.,Tyrolean Cancer Research Institute, A6020 Innsbruck, Austria
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G-Quadruplex surveillance in BCL-2 gene: a promising therapeutic intervention in cancer treatment. Drug Discov Today 2017; 22:1165-1186. [PMID: 28506718 DOI: 10.1016/j.drudis.2017.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 03/20/2017] [Accepted: 05/05/2017] [Indexed: 02/07/2023]
Abstract
Recently, therapeutic implications of BCL-2 quadruplex invigorated the field of clinical oncology. This Keynote review discusses how a BCL-2 quadruplex-selective approach circumvents the limitations of existing therapeutics; and which improvisations might ameliorate the recent trends of quadruplex-based treatment.
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27
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Cellular responses to replication stress: Implications in cancer biology and therapy. DNA Repair (Amst) 2016; 49:9-20. [PMID: 27908669 DOI: 10.1016/j.dnarep.2016.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 12/11/2022]
Abstract
DNA replication is essential for cell proliferation. Any obstacles during replication cause replication stress, which may lead to genomic instability and cancer formation. In this review, we summarize the physiological DNA replication process and the normal cellular response to replication stress. We also outline specialized therapies in clinical trials based on current knowledge and future perspectives in the field.
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28
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Abstract
Unlike the rather stereotypic image by which it was portrayed until not too many years ago, p53 is now increasingly emerging as a multifaceted transcription factor that can sometimes exert opposing effects on biological processes. This includes pro-survival activities that seem to contradict p53's canonical proapoptotic features, as well as opposing effects on cell migration, metabolism, and differentiation. Such antagonistic bifunctionality (balancing both positive and negative signals) bestows p53 with an ideal attribute to govern homeostasis. The molecular mechanisms underpinning the paradoxical activities of p53 may be related to a protein conformational spectrum (from canonical wild-type to "pseudomutant"), diversity of DNA response elements, and/or higher-order chromatin configuration. Altogether, this functional flexibility positions p53 as a transcriptional "super hub" that dictates cell homeostasis, and ultimately cell fate, by governing a hierarchy of other functional hubs. Deciphering the mechanisms by which p53 determines which hubs to engage, and how one might modulate the preferences of p53, remains a major challenge for both basic science and translational cancer medicine.
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Affiliation(s)
- Yael Aylon
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moshe Oren
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 76100, Israel
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29
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Tasdogan A, Kumar S, Allies G, Bausinger J, Beckel F, Hofemeister H, Mulaw M, Madan V, Scharffetter-Kochanek K, Feuring-Buske M, Doehner K, Speit G, Stewart AF, Fehling HJ. DNA Damage-Induced HSPC Malfunction Depends on ROS Accumulation Downstream of IFN-1 Signaling and Bid Mobilization. Cell Stem Cell 2016; 19:752-767. [PMID: 27641306 DOI: 10.1016/j.stem.2016.08.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 06/12/2016] [Accepted: 08/09/2016] [Indexed: 01/02/2023]
Abstract
Mouse mutants with an impaired DNA damage response frequently exhibit a set of remarkably similar defects in the HSPC compartment that are of largely unknown molecular basis. Using Mixed-Lineage-Leukemia-5 (Mll5)-deficient mice as prototypical examples, we have identified a mechanistic pathway linking DNA damage and HSPC malfunction. We show that Mll5 deficiency results in accumulation of DNA damage and reactive oxygen species (ROS) in HSPCs. Reduction of ROS efficiently reverses hematopoietic defects, establishing ROS as a major cause of impaired HSPC function. The Ink4a/Arf locus also contributes to HSPC phenotypes, at least in part via promotion of ROS. Strikingly, toxic ROS levels in Mll5-/- mice are critically dependent on type 1 interferon (IFN-1) signaling, which triggers mitochondrial accumulation of full-length Bid. Genetic inactivation of Bid diminishes ROS levels and reverses HSPC defects in Mll5-/- mice. Overall, therefore, our findings highlight an unexpected IFN-1 > Bid > ROS pathway underlying DNA damage-associated HSPC malfunction.
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Affiliation(s)
- Alpaslan Tasdogan
- Institute of Immunology, University Hospital, 89081 Ulm, Germany; Department of Dermatology, University Hospital, 89081 Ulm, Germany
| | - Suresh Kumar
- Institute of Immunology, University Hospital, 89081 Ulm, Germany
| | - Gabriele Allies
- Institute of Immunology, University Hospital, 89081 Ulm, Germany
| | - Julia Bausinger
- Institute of Human Genetics, University Hospital, 89081 Ulm, Germany
| | - Franziska Beckel
- Institute of Immunology, University Hospital, 89081 Ulm, Germany
| | - Helmut Hofemeister
- Genomics, BioInnovations Zentrum, Technische Universität, 01307 Dresden, Germany
| | - Medhanie Mulaw
- Institute of Experimental Cancer Research, University Clinics, 89081 Ulm, Germany
| | - Vikas Madan
- Institute of Immunology, University Hospital, 89081 Ulm, Germany
| | | | | | - Konstanze Doehner
- Department of Internal Medicine III, University Hospital, 89081 Ulm, Germany
| | - Günter Speit
- Institute of Human Genetics, University Hospital, 89081 Ulm, Germany
| | - A Francis Stewart
- Genomics, BioInnovations Zentrum, Technische Universität, 01307 Dresden, Germany
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30
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Gross A. BCL-2 family proteins as regulators of mitochondria metabolism. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:1243-1246. [DOI: 10.1016/j.bbabio.2016.01.017] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/26/2016] [Accepted: 01/27/2016] [Indexed: 02/07/2023]
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31
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Fukushi S, Yoshino H, Yoshizawa A, Kashiwakura I. p53-independent structure-activity relationships of 3-ring mesogenic compounds' activity as cytotoxic effects against human non-small cell lung cancer lines. BMC Cancer 2016; 16:521. [PMID: 27456853 PMCID: PMC4960859 DOI: 10.1186/s12885-016-2585-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 07/20/2016] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND We recently demonstrated the cytotoxicity of liquid crystal precursors (hereafter referred to as "mesogenic compounds") in the human non-small cell lung cancer (NSCLC) cell line A549 which carry wild-type p53. p53 mutations are observed in 50 % of NSCLC and contribute to their resistance to chemotherapy. To develop more effective and cancer-specific agents, in this study, we investigated the structure-activity relationships of mesogenic compounds with cytotoxic effects against multiple NSCLC cells. METHODS The pharmacological effects of mesogenic compounds were examined in human NSCLC cells (A549, LU99, EBC-1, and H1299) and normal WI-38 human fibroblast. Analyses of the cell cycle, cell-death induction, and capsases expression were performed. RESULTS The 3-ring compounds possessing terminal alkyl and hydroxyl groups (compounds C1-C5) showed cytotoxicity in NSCLC cells regardless of the p53 status. The compounds C1 and C3, which possess a pyrimidine at the center of the core, induced G2/M arrest, while the compounds without a pyrimidine (C2, C4, and C5) caused G1 arrest; all compounds produced caspase-mediated cell death. These events occurred in a p53-independent manner. Furthermore, it was suggested that compounds induced cell death through p53-independent DNA damage-signaling pathway. Compounds C2, C4, and C5 did not show strong cytotoxicity in WI-38 cells, whereas C1 and C3 did. However, the cytotoxicity of compound C1 against WI-38 cells was improved by modulating the terminal alkyl chain lengths of the compound. CONCLUSIONS We showed the p53-indepdent structure-activity relationships of mesogenic compounds related to the cytotoxic effects. These structure-activity relationships will be helpful in the development of more effective and cancer-specific agents.
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Affiliation(s)
- Saori Fukushi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561 Japan
| | - Hironori Yoshino
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori 036-8564 Japan
| | - Atsushi Yoshizawa
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561 Japan
| | - Ikuo Kashiwakura
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori 036-8564 Japan
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Zhang P, Wang S, Wang S, Qiao J, Zhang L, Zhang Z, Chen Z. Dual function of partitioning-defective 3 in the regulation of YAP phosphorylation and activation. Cell Discov 2016; 2:16021. [PMID: 27462467 PMCID: PMC4932730 DOI: 10.1038/celldisc.2016.21] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 05/22/2016] [Indexed: 12/22/2022] Open
Abstract
Partitioning-defective 3 (Par3), a key component of the evolutionarily conserved polarity PAR complex (Par3/Par6/aPKC), controls cell polarity and contributes to cell migration, proliferation and tumor development. Emerging evidence indicates that cell polarity proteins function as upstream modulators that regulate the Hippo pathway. However, little is known about Par3’s involvement in the Hippo pathway. Here, we find Par3 and YAP dynamically co-localize in different subcellular compartments; that is, the membrane, cytoplasm and nucleus, in a cell-density-dependent manner. Interestingly, Par3 knockdown promotes YAP phosphorylation, leading to a significant impairment of YAP nuclear translocation at low cell density, but not at high density, in MDCK cells. Furthermore, via its third PDZ domain, Par3 directly binds to the PDZ-binding motif of YAP. The interaction is required for regulating YAP phosphorylation and nuclear localization. Mechanistically, Par3, as a scaffold protein, associates with LATS1 and protein phosphatase 1, α subunit (PP1A) in the cytoplasm and nucleus. Par3 promotes the dephosphorylation of LATS1 and YAP, thus enhancing YAP activation and cell proliferation. Strikingly, we also find that under the condition of PP1A knockdown, Par3 expression promotes YAP hyperphosphorylation, leading to the suppression of YAP activity and its downstream targets. Par3 expression results in differential effects on YAP phosphorylation and activation in different tumor cell lines. These findings indicate that Par3 may have a dual role in regulating the activation of the Hippo pathway, in a manner possibly dependent on cellular context or cell type in response to cell–cell contact and cell polarity signals.
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Affiliation(s)
- Peng Zhang
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Shuting Wang
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Sai Wang
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jing Qiao
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Lei Zhang
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences , Shanghai, China
| | - Zhe Zhang
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences , Shanghai, China
| | - Zhengjun Chen
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China; School of Life Science and Technology, ShanghaiTech University, Shanghai, China
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Yu C, Yan S, Khambu B, Chen X, Dong Z, Luo J, Michalopoulos GK, Wu S, Yin XM. Gene Expression Analysis Indicates Divergent Mechanisms in DEN-Induced Carcinogenesis in Wild Type and Bid-Deficient Livers. PLoS One 2016; 11:e0155211. [PMID: 27196317 PMCID: PMC4873180 DOI: 10.1371/journal.pone.0155211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/26/2016] [Indexed: 12/27/2022] Open
Abstract
Bid is a Bcl-2 family protein. In addition to its pro-apoptosis function, Bid can also promote cell proliferation, maintain S phase checkpoint, and facilitate inflammasome activation. Bid plays important roles in tissue injury and regeneration, hematopoietic homeostasis, and tumorigenesis. Bid participates in hepatic carcinogenesis but the mechanism is not fully understood. Deletion of Bid resulted in diminished tumor burden and delayed tumor progression in a liver cancer model. In order to better understand the Bid-regulated events during hepatic carcinogenesis we performed gene expression analysis in wild type and bid-deficient mice treated with a hepatic carcinogen, diethylnitrosamine. We found that deletion of Bid caused significantly fewer alterations in gene expression in terms of the number of genes affected and the number of pathways affected. In addition, the expression profiles were remarkably different. In the wild type mice, there was a significant increase in the expression of growth regulation-related and immune/inflammation response-related genes, and a significant decrease in the expression of metabolism-related genes, both of which were diminished in bid-deficient livers. These data suggest that Bid could promote hepatic carcinogenesis via growth control and inflammation-mediated events.
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Affiliation(s)
- Changshun Yu
- Division of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University, Tianjin, China
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- Kingmed Center for Clinical Laboratory, Guangzhou, China
| | - Shengmin Yan
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Bilon Khambu
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Xiaoyun Chen
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Zheng Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia and Charlie Norwood VA Medical Center, Augusta, Georgia, United States of America
| | - Jianhua Luo
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - George K. Michalopoulos
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Shangwei Wu
- Division of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University, Tianjin, China
- Kingmed Center for Clinical Laboratory, Guangzhou, China
- * E-mail: (XMY); (SW)
| | - Xiao-Ming Yin
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- * E-mail: (XMY); (SW)
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34
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Matsumoto M, Nakajima W, Seike M, Gemma A, Tanaka N. Cisplatin-induced apoptosis in non-small-cell lung cancer cells is dependent on Bax- and Bak-induction pathway and synergistically activated by BH3-mimetic ABT-263 in p53 wild-type and mutant cells. Biochem Biophys Res Commun 2016; 473:490-6. [DOI: 10.1016/j.bbrc.2016.03.053] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
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35
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Kollek M, Müller A, Egle A, Erlacher M. Bcl-2 proteins in development, health, and disease of the hematopoietic system. FEBS J 2016; 283:2779-810. [DOI: 10.1111/febs.13683] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 01/29/2016] [Accepted: 02/12/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Matthias Kollek
- Division of Pediatric Hematology and Oncology; Department of Pediatrics and Adolescent Medicine; University Medical Center of Freiburg; Germany
- Faculty of Biology; University of Freiburg; Germany
| | - Alexandra Müller
- Division of Pediatric Hematology and Oncology; Department of Pediatrics and Adolescent Medicine; University Medical Center of Freiburg; Germany
| | - Alexander Egle
- Laboratory for Immunological and Molecular Cancer Research; 3rd Medical Department for Hematology; Paracelsus Private Medical University Hospital; Salzburg Austria
| | - Miriam Erlacher
- Division of Pediatric Hematology and Oncology; Department of Pediatrics and Adolescent Medicine; University Medical Center of Freiburg; Germany
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Genes CM, de Lucio H, González VM, Sánchez-Murcia PA, Rico E, Gago F, Fasel N, Jiménez-Ruiz A. A functional BH3 domain in an aquaporin from Leishmania infantum. Cell Death Discov 2016; 2:16043. [PMID: 27551533 PMCID: PMC4979448 DOI: 10.1038/cddiscovery.2016.43] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 05/15/2016] [Indexed: 02/08/2023] Open
Abstract
Despite the absence of sequences showing significant similarity to any of the members of the Bcl-2 family of proteins in protozoa, experiments carried out in yeast or trypanosomatids have demonstrated that ectopic expression of some of these members alters their response to different death stimuli. Because the BH3 domain is the smallest common signature in all the proteins of this family of apoptosis regulators and also because they are essential for molecular interactions between antagonistic members, we looked for sequences with significant similarity to the BH3 motif in the Leishmania infantum genome. Among the top scoring ones, we found the MYLALQNLGDEV amino-acid stretch at the C terminus of a previously described aquaporin, now renamed as Li-BH3AQP. This motif is highly conserved in homologous proteins from other species of the Leishmania genus. The association of Li-BH3AQP with human Bcl-XL was demonstrated by both co-immunoprecipitation and yeast two-hybrid experiments. Ectopic expression of Li-BH3AQP reduced viability of HeLa cells and this deleterious effect was abrogated by the simultaneous overexpression of Bcl-XL. Although we were not able to demonstrate a reduction in parasite viability when the protein was overexpressed in Leishmania promastigotes, a prodeath effect could be observed when the parasites overexpressing Li-BH3AQP were treated with staurosporine or antimycin A. Surprisingly, these parasites were more resistant, compared with wild-type parasites, to hypotonic stress or nutrient deprivation. The prodeath activity was abolished upon replacement of two highly conserved amino acids in this BH3 domain. Taken together, these results point to Li-BH3AQP as the first non-enzymatic protein ever described in trypanosomatids that is involved in cell death.
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Affiliation(s)
- C M Genes
- Departamento de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares 28805, Spain
| | - H de Lucio
- Departamento de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares 28805, Spain
| | - V M González
- Laboratory of aptamers, Departamento de Bioquímica-Investigación, IRYCIS-Hospital Ramón y Cajal, Madrid, Spain
| | - P A Sánchez-Murcia
- Departamento de Ciencias Biomédicas, Universidad de Alcalá, Facultad de Medicina, Alcalá de Henares 28805, Spain
| | - E Rico
- Departamento de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares 28805, Spain
| | - F Gago
- Departamento de Ciencias Biomédicas, Universidad de Alcalá, Facultad de Medicina, Alcalá de Henares 28805, Spain
| | - N Fasel
- Department of Biochemistry, University of Lausanne, 155 Chemin des Boveresses, Epalinges 1066, Switzerland
| | - A Jiménez-Ruiz
- Departamento de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares 28805, Spain
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Gross A, Zaltsman Y, Maryanovich M. The ATM-BID pathway plays a critical role in the DNA damage response by regulating mitochondria metabolism. Cell Death Differ 2015; 23:182. [PMID: 26611459 DOI: 10.1038/cdd.2015.154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- A Gross
- Department of Biological Regulation, Weizmann Institute, Rehovot, Israel
| | - Y Zaltsman
- Department of Biological Regulation, Weizmann Institute, Rehovot, Israel
| | - M Maryanovich
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
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Hilton BA, Li Z, Musich PR, Wang H, Cartwright BM, Serrano M, Zhou XZ, Lu KP, Zou Y. ATR Plays a Direct Antiapoptotic Role at Mitochondria, which Is Regulated by Prolyl Isomerase Pin1. Mol Cell 2015; 60:35-46. [PMID: 26387736 DOI: 10.1016/j.molcel.2015.08.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 07/06/2015] [Accepted: 08/14/2015] [Indexed: 12/27/2022]
Abstract
ATR, a PI3K-like protein kinase, plays a key role in regulating DNA damage responses. Its nuclear checkpoint kinase function is well documented, but little is known about its function outside the nucleus. Here we report that ATR has an antiapoptotic activity at mitochondria in response to UV damage, and this activity is independent of its hallmark checkpoint/kinase activity and partner ATRIP. ATR contains a BH3-like domain that allows ATR-tBid interaction at mitochondria, suppressing cytochrome c release and apoptosis. This mitochondrial activity of ATR is downregulated by Pin1 that isomerizes ATR from cis-isomer to trans-isomer at the phosphorylated Ser428-Pro429 motif. However, UV inactivates Pin1 via DAPK1, stabilizing the pro-survival cis-isomeric ATR. In contrast, nuclear ATR remains in the trans-isoform disregarding UV. This cytoplasmic response of ATR may provide a mechanism for the observed antiapoptotic role of ATR in suppressing carcinogenesis and its inhibition in sensitizing anticancer agents for killing of cancer cells.
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Affiliation(s)
- Benjamin A Hilton
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Zhengke Li
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Phillip R Musich
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Hui Wang
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Brian M Cartwright
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Moises Serrano
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Xiao Zhen Zhou
- Department of Medicine, Center for Life Science, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Kun Ping Lu
- Department of Medicine, Center for Life Science, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Yue Zou
- Department of Biomedical Sciences, J.H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
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Orlik J, Schüngel S, Buitrago-Molina LE, Marhenke S, Geffers R, Endig J, Lobschat K, Rössler S, Goeppert B, Manns MP, Gross A, Vogel A. The BH3-only protein BID impairs the p38-mediated stress response and promotes hepatocarcinogenesis during chronic liver injury in mice. Hepatology 2015; 62:816-28. [PMID: 25951810 DOI: 10.1002/hep.27888] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/17/2015] [Accepted: 05/03/2015] [Indexed: 12/24/2022]
Abstract
UNLABELLED Apoptosis is critical for maintaining tissue homeostasis, and apoptosis evasion is considered as a hallmark of cancer. However, increasing evidence also suggests that proapoptotic molecules can contribute to the development of cancer, including liver cancer. The aim of this study was to further clarify the role of the proapoptotic B-cell lymphoma 2 homology domain 3 (BH3)-only protein BH3 interacting-domain death agonist (BID) for chronic liver injury (CLI) and hepatocarcinogenesis (HCG). Loss of BID significantly delayed tumor development in two mouse models of Fah-mediated and HBsTg-driven HCG, suggesting a tumor-promoting effect of BID. Liver injury as well as basal and mitogen-stimulated hepatocyte proliferation were not modulated by BID. Moreover, there was no in vivo or in vitro evidence that BID was involved in DNA damage response in hepatocytes and hepatoma cells. Our data revealed that CLI was associated with strong activation of oxidative stress (OS) response and that BID impaired full activation of p38 after OS. CONCLUSION We provide evidence that the tumor-promoting function of BID in CLI is not related to enhanced proliferation or an impaired DNA damage response. In contrast, BID suppresses p38 activity and facilitates malignant transformation of hepatocytes.
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Affiliation(s)
- Johanna Orlik
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Sven Schüngel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | | | - Silke Marhenke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Robert Geffers
- Genome Analytics, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Jessica Endig
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Katharina Lobschat
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | | | | | - Michael P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Atan Gross
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Arndt Vogel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
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Stojković S, Podolski-Renić A, Dinić J, Stanković T, Banković J, Hadžić S, Paunović V, Isaković A, Tanić N, Pešić M. Development of resistance to antiglioma agents in rat C6 cells caused collateral sensitivity to doxorubicin. Exp Cell Res 2015; 335:248-57. [DOI: 10.1016/j.yexcr.2015.05.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/18/2015] [Accepted: 05/21/2015] [Indexed: 01/02/2023]
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Prakasam A, Ghose S, Oleinik NV, Bethard JR, Peterson YK, Krupenko NI, Krupenko SA. JNK1/2 regulate Bid by direct phosphorylation at Thr59 in response to ALDH1L1. Cell Death Dis 2014; 5:e1358. [PMID: 25077544 PMCID: PMC4123105 DOI: 10.1038/cddis.2014.316] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 06/06/2014] [Accepted: 06/18/2014] [Indexed: 01/07/2023]
Abstract
BH3 interacting-domain death agonist (Bid) is a BH3-only pro-apoptotic member of the Bcl-2 family of proteins. Its function in apoptosis is associated with the proteolytic cleavage to the truncated form tBid, mainly by caspase-8. tBid translocates to mitochondria and assists Bax and Bak in induction of apoptosis. c-Jun N-terminal kinase (JNK)-dependent alternative processing of Bid to jBid was also reported. We have previously shown that the folate stress enzyme 10-formyltetrahydrofolate dehydrogenase (ALDH1L1) activates JNK1 and JNK2 in cancer cells as a pro-apoptotic response. Here we report that in PC-3 prostate cancer cells, JNK1/2 phosphorylate Bid at Thr59 within the caspase cleavage site in response to ALDH1L1. In vitro, all three JNK isoforms, JNK 1–3, phosphorylated Thr59 of Bid with JNK1 being the least active. Thr59 phosphorylation protected Bid from cleavage by caspase-8, resulting in strong accumulation of the full-length protein and its translocation to mitochondria. Interestingly, although we did not observe jBid in response to ALDH1L1 in PC-3 cells, transient expression of Bid mutants lacking the caspase-8 cleavage site resulted in strong accumulation of jBid. Of note, a T59D mutant mimicking constitutive phosphorylation revealed more profound cleavage of Bid to jBid. JNK-driven Bid accumulation had a pro-apoptotic effect in our study: small interfering RNA silencing of either JNK1/2 or Bid prevented Bid phosphorylation and accumulation, and rescued ALDH1L1-expressing cells. As full-length Bid is a weaker apoptogen than tBid, we propose that the phosphorylation of Bid by JNKs, followed by the accumulation of the full-length protein, delays attainment of apoptosis, and allows the cell to evaluate the stress and make a decision regarding the response strategy. This mechanism perhaps can be modified by the alternative cleavage of phospho-T59 Bid to jBid at some conditions.
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Affiliation(s)
- A Prakasam
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA
| | - S Ghose
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA
| | - N V Oleinik
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA
| | - J R Bethard
- Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, USA
| | - Y K Peterson
- Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - N I Krupenko
- 1] Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA [2] Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
| | - S A Krupenko
- 1] Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA [2] Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
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Abstract
Mutations in the ataxia telangiectasia mutated (ATM) gene, which encodes a kinase critical for the normal DNA damage response, cause the neurodegenerative disorder ataxia-telangiectasia (AT). The substrates of ATM in the brain are poorly understood. Here we demonstrate that ATM phosphorylates and activates the transcription factor myocyte enhancer factor 2D (MEF2D), which plays a critical role in promoting survival of cerebellar granule cells. ATM associates with MEF2D after DNA damage and phosphorylates the transcription factor at four ATM consensus sites. Knockdown of endogenous MEF2D with a short-hairpin RNA (shRNA) increases sensitivity to etoposide-induced DNA damage and neuronal cell death. Interestingly, substitution of endogenous MEF2D with an shRNA-resistant phosphomimetic MEF2D mutant protects cerebellar granule cells from cell death after DNA damage, whereas an shRNA-resistant nonphosphorylatable MEF2D mutant does not. In vivo, cerebella in Mef2d knock-out mice manifest increased susceptibility to DNA damage. Together, our results show that MEF2D is a substrate for phosphorylation by ATM, thus promoting survival in response to DNA damage. Moreover, dysregulation of the ATM-MEF2D pathway may contribute to neurodegeneration in AT.
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43
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Romagnoli R, Baraldi PG, Salvador MK, Chayah M, Camacho ME, Prencipe F, Hamel E, Consolaro F, Basso G, Viola G. Design, synthesis and biological evaluation of arylcinnamide hybrid derivatives as novel anticancer agents. Eur J Med Chem 2014; 81:394-407. [PMID: 24858544 DOI: 10.1016/j.ejmech.2014.05.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 05/06/2014] [Accepted: 05/09/2014] [Indexed: 10/25/2022]
Abstract
The combination of two pharmacophores into a single molecule represents one of the methods that can be adopted for the synthesis of new anticancer molecules. A series of novel antiproliferative agents designed by a pharmacophore hybridization approach, combining the arylcinnamide skeleton and an α-bromoacryloyl moiety, was synthesized and evaluated for its antiproliferative activity against a panel of seven human cancer cell lines. In addition, the new derivatives were also active on multidrug-resistant cell lines over-expressing P-glycoprotein. The biological effects of various substituents on the N-phenyl ring of the benzamide portion were also described. In order to study the possible mechanism of action, we observed that 4p slightly increased the Reactive Oxygen Species (ROS) production in HeLa cells, but, more importantly, a remarkable decrease of intracellular reduced glutathione content was detected in treated cells compared with controls. These results were confirmed by the observation that only thiol-containing antioxidants were able to significantly protect the cells from induced cell death. Altogether our results indicate that the new derivatives are endowed with good anticancer activity in vitro, and their properties may result in the development of new cancer therapeutic strategies.
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Affiliation(s)
- Romeo Romagnoli
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy.
| | - Pier Giovanni Baraldi
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy.
| | - Maria Kimatrai Salvador
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy
| | - Mariem Chayah
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy
| | - M Encarnacion Camacho
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy
| | - Filippo Prencipe
- Dipartimento di Scienze Chimiche e Farmaceutiche, Via Fossato di Mortara 17, Università di Ferrara, 44121 Ferrara, Italy
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Francesca Consolaro
- Dipartimento di Salute della Donna e del Bambino, Laboratorio di Oncoematologia, Università di Padova, 35131 Padova, Italy
| | - Giuseppe Basso
- Dipartimento di Salute della Donna e del Bambino, Laboratorio di Oncoematologia, Università di Padova, 35131 Padova, Italy
| | - Giampietro Viola
- Dipartimento di Salute della Donna e del Bambino, Laboratorio di Oncoematologia, Università di Padova, 35131 Padova, Italy.
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Abstract
Nuclear envelope (NE) proteins have fundamental roles in maintaining nuclear structure, cell signaling, chromatin organization, and gene regulation, and mutations in genes encoding NE components were identified as primary cause of a number of age associated diseases and cancer. Nesprin-1 belongs to a family of multi-isomeric NE proteins that are characterized by spectrin repeats. We analyzed NE components in various tumor cell lines and found that Nesprin-1 levels were strongly reduced associated with alterations in further NE components. By reducing the amounts of Nesprin-1 by RNAi mediated knockdown, we could reproduce those alterations in mouse and human cell lines. In a search for novel Nesprin-1 binding proteins, we identified MSH2 and MSH6, proteins of the DNA damage response pathway, as interactors and found alterations in the corresponding pathways in cells with lower Nesprin-1 levels. We also noticed increased number of γH2AX foci in the absence of exogenous DNA damage as was seen in tumor cells. The levels of phosphorylated kinases Chk1 and 2 were altered in a manner resembling tumor cells and the levels of Ku70 were low and the protein was not recruited to the DNA after hydroxyurea (HU) treatment. Our findings indicate a role for Nesprin-1 in the DNA damage response pathway and propose Nesprin-1 as novel player in tumorigenesis and genome instability.
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Affiliation(s)
- Ilknur Sur
- Institute of Biochemistry I; Medical Faculty; Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD); University of Cologne; Cologne, Germany
| | - Sascha Neumann
- Institute of Biochemistry I; Medical Faculty; Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD); University of Cologne; Cologne, Germany
| | - Angelika A Noegel
- Institute of Biochemistry I; Medical Faculty; Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD); University of Cologne; Cologne, Germany
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45
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Wang P, Lindsay J, Owens TW, Mularczyk EJ, Warwood S, Foster F, Streuli CH, Brennan K, Gilmore AP. Phosphorylation of the proapoptotic BH3-only protein bid primes mitochondria for apoptosis during mitotic arrest. Cell Rep 2014; 7:661-71. [PMID: 24767991 PMCID: PMC4022835 DOI: 10.1016/j.celrep.2014.03.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 02/12/2014] [Accepted: 03/20/2014] [Indexed: 01/07/2023] Open
Abstract
Mitosis is a moment of exquisite vulnerability for a metazoan cell. Failure to complete mitosis accurately can lead to aneuploidy and cancer initiation. Therefore, if the exit from mitosis is delayed, normal cells are usually removed by apoptosis. However, how failure to complete mitosis activates apoptosis is still unclear. Here, we demonstrate that a phosphorylated form of the BH3-only protein Bid regulates apoptosis if mitotic exit is delayed. Bid is phosphorylated on serine 66 as cells enter mitosis, and this phosphorylation is lost during the metaphase-to-anaphase transition. Cells expressing a nonphosphorylatable version of Bid or a BH3-domain mutant were resistant to mitotic-arrest-induced apoptosis. Thus, we show that Bid phosphorylation primes cells to undergo mitochondrial apoptosis if mitotic exit is delayed. Avoidance of this mechanism may explain the selective pressure for cancer cells to undergo mitotic slippage. Cell death in mitosis requires the BH3-only protein Bid Bid becomes phosphorylated on serine 66 as cells enter mitosis Bid phosphorylation makes mitotic cells dependent on antiapoptotic proteins Paclitaxel-insensitive cells can be sensitized by targeting this Bcl-2 checkpoint
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Affiliation(s)
- Pengbo Wang
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Jennefer Lindsay
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Thomas W Owens
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Ewa J Mularczyk
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Stacey Warwood
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Fiona Foster
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Charles H Streuli
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Keith Brennan
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK
| | - Andrew P Gilmore
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK.
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46
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Tyagi M, Patro BS, Chattopadhyay S. Mechanism of the malabaricone C-induced toxicity to the MCF-7 cell line. Free Radic Res 2014; 48:466-77. [DOI: 10.3109/10715762.2014.886328] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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47
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Lin D, Zhong W, Li J, Zhang B, Song G, Hu T. Involvement of BID translocation in glycyrrhetinic acid and 11-deoxy glycyrrhetinic acid-induced attenuation of gastric cancer growth. Nutr Cancer 2014; 66:463-73. [PMID: 24547973 DOI: 10.1080/01635581.2013.877498] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Glycyrrhetinic acid (GA), the main chemical constituents of licorice, has shown remarkable anticancer activity. However, the side effects limit its widespread use. 11-DOGA is produced through reduction of GA 11-carbonyl to 11-hydroxyl to reduce its side effects, although its anticancer activities are largely unknown. Here, we report that the functional mechanisms of GA and 11-DOGA in gastric cancers, as well as the comparison between these two drugs' pharmacological potential. Firstly, we found that GA and 11-DOGA significantly inhibits the viabilities of gastric cancer cells in dose- and time-dependent manners. Both GA and 11-DOGA induce gastric cancer cells apoptosis and cell cycle arrest in G2 phase by upregulation of p21 and downregulation of cdc2 and cyclin B1. Further studies show that GA and 11-DOGA-induced apoptosis in gastric cancer cells is associated with BID translocation from nucleus to mitochondria. Moreover, GA and 11-DOGA could effectively inhibit tumor formation of gastric cancer cells in nude mice. Comparing with 11-DOGA, GA presents higher toxicity toward gastric cancer cells both in vivo and in vitro. Thus, the elucidation of the functional mechanisms of GA and 11-DOGA-induced attenuation of gastric cancer growth suggests a possible therapeutic role of GA and its derivatives.
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Affiliation(s)
- Dejian Lin
- a Cancer Research Center, Medical College of Xiamen University , Xiamen , People's Republic of China
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48
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Liu L, Yim H, Choi JH, Kim ST, Jin Y, Lee SK. ATM kinase promotes both caspase-8 and caspase-9 activation during TNF-α-induced apoptosis of HeLa cells. FEBS Lett 2014; 588:929-35. [PMID: 24530529 DOI: 10.1016/j.febslet.2014.01.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/31/2013] [Accepted: 01/04/2014] [Indexed: 11/24/2022]
Abstract
In this study, we show that atraxia telangiectasia mutated kinase (ATM) activity is generally upregulated by different apoptotic stimuli, i.e. TNF-α, TRAIL, paclitaxel, or UV. Apoptotic progression is markedly attenuated by siATM-RNA through down regulation of caspase-8 and caspase-9 in parallel with decreases in FLIP-S (short form of cellular FLICE inhibitory protein) protein levels and Bid cleavage. In addition, ATM activity is upregulated through t-Cdc6 while caspase-8 and caspase-9 activities increase. Taken together, we suggest that ATM regulates caspase-8 activation by influencing levels of FLIP-S, ATM kinase activity is upregulated by t-Cdc6, and increased ATM activity plays an essential role in the amplification of apoptosis in TNF-α-stimulated HeLa cells.
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Affiliation(s)
- Linhua Liu
- Department of Biochemistry, Institute of Glycobiology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian, 116044 Liaoning, China; Division of Pharmaceutical Biosciences, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, South Korea.
| | - Hyungshin Yim
- Division of Pharmaceutical Biosciences, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, South Korea; Department of Pharmacy, College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan, Kyeonggi-do 426-791, South Korea
| | - Jae Hyuk Choi
- Division of Pharmaceutical Biosciences, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, South Korea
| | - Seung-Tak Kim
- Division of Pharmaceutical Biosciences, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, South Korea
| | - Yinghua Jin
- Department of Life Science, Jilin University, Jiefang Road, Changchun, China
| | - Seung Ki Lee
- Division of Pharmaceutical Biosciences, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, South Korea
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49
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Abstract
Solar ultraviolet (UV) radiation, mainly UV-B (280-315 nm), is one of the most potent genotoxic agents that adversely affects living organisms by altering their genomic stability. DNA through its nucleobases has absorption maxima in the UV region and is therefore the main target of the deleterious radiation. The main biological relevance of UV radiation lies in the formation of several cytotoxic and mutagenic DNA lesions such as cyclobutane pyrimidine dimers (CPDs), 6-4 photoproducts (6-4PPs), and their Dewar valence isomers (DEWs), as well as DNA strand breaks. However, to counteract these DNA lesions, organisms have developed a number of highly conserved repair mechanisms such as photoreactivation, excision repair, and mismatch repair (MMR). Photoreactivation involving the enzyme photolyase is the most frequently used repair mechanism in a number of organisms. Excision repair can be classified as base excision repair (BER) and nucleotide excision repair (NER) involving a number of glycosylases and polymerases, respectively. In addition to this, double-strand break repair, SOS response, cell-cycle checkpoints, and programmed cell death (apoptosis) are also operative in various organisms to ensure genomic stability. This review concentrates on the UV-induced DNA damage and the associated repair mechanisms as well as various damage detection methods.
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Affiliation(s)
- Richa
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi, 221005, India
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The ATM-mediated DNA-damage response. Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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