1
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Zhang T, Kim BM, Lee TH. Death-associated protein kinase 1 as a therapeutic target for Alzheimer's disease. Transl Neurodegener 2024; 13:4. [PMID: 38195518 PMCID: PMC10775678 DOI: 10.1186/s40035-023-00395-5] [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: 10/04/2023] [Accepted: 12/18/2023] [Indexed: 01/11/2024] Open
Abstract
Alzheimer's disease (AD) is the most prevalent form of dementia in the elderly and represents a major clinical challenge in the ageing society. Neuropathological hallmarks of AD include neurofibrillary tangles composed of hyperphosphorylated tau, senile plaques derived from the deposition of amyloid-β (Aβ) peptides, brain atrophy induced by neuronal loss, and synaptic dysfunctions. Death-associated protein kinase 1 (DAPK1) is ubiquitously expressed in the central nervous system. Dysregulation of DAPK1 has been shown to contribute to various neurological diseases including AD, ischemic stroke and Parkinson's disease (PD). We have established an upstream effect of DAPK1 on Aβ and tau pathologies and neuronal apoptosis through kinase-mediated protein phosphorylation, supporting a causal role of DAPK1 in the pathophysiology of AD. In this review, we summarize current knowledge about how DAPK1 is involved in various AD pathological changes including tau hyperphosphorylation, Aβ deposition, neuronal cell death and synaptic degeneration. The underlying molecular mechanisms of DAPK1 dysregulation in AD are discussed. We also review the recent progress regarding the development of novel DAPK1 modulators and their potential applications in AD intervention. These findings substantiate DAPK1 as a novel therapeutic target for the development of multifunctional disease-modifying treatments for AD and other neurological disorders.
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Affiliation(s)
- Tao Zhang
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute of Basic Medicine, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, Fuzhou, 350122, Fujian, China
| | - Byeong Mo Kim
- Research Center for New Drug Development, AgingTarget Inc., 10F Ace Cheonggye Tower, 53, Seonggogae-Ro, Uiwang-Si, 16006, Gyeonggi-Do, Korea.
| | - Tae Ho Lee
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute of Basic Medicine, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, Fuzhou, 350122, Fujian, China.
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2
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Urbaniak A, Jablonska K, Suchanski J, Partynska A, Szymczak-Kulus K, Matkowski R, Maciejczyk A, Ugorski M, Dziegiel P. Prolactin-induced protein (PIP) increases the sensitivity of breast cancer cells to drug-induced apoptosis. Sci Rep 2023; 13:6574. [PMID: 37085653 PMCID: PMC10121699 DOI: 10.1038/s41598-023-33707-w] [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: 12/13/2022] [Accepted: 04/18/2023] [Indexed: 04/23/2023] Open
Abstract
We have previously shown that high expression of prolactin-induced protein (PIP) correlates with the response of breast cancer (BC) patients to standard adjuvant chemotherapy (doxorubicin and cyclophosphamide), which suggests that the absence of this glycoprotein is associated with resistance of tumor cells to chemotherapy. Therefore, in the present study, we analyzed the impact of PIP expression on resistance of BC cells to anti-cancer drugs and its biological role in BC progression. Expression of PIP and apoptotic genes in BC cell lines was analyzed using real-time PCR and Western blotting. PIP was detected in BC tissue specimens using immunohistochemistry. The tumorigenicity of cancer cells was analyzed by the in vivo tumor growth assay. Apoptotic cells were detected based on caspase-3 activation, Annexin V binding and TUNEL assay. The interaction of PIP with BC cells was analyzed using flow cytometry. Using two cellular models of BC (i.e. T47D cells with the knockdown of the PIP gene and MDA-MB-231 cells overexpressing PIP), we found that high expression of PIP resulted in (1) increased sensitivity of BC cells to apoptosis induced by doxorubicin (DOX), 4-hydroperoxycyclophosphamide (4-HC), and paclitaxel (PAX), and (2) improved efficacy of anti-cancer therapy with DOX in the xenograft mice model. Accordingly, a clinical study revealed that BC patients with higher PIP expression were characterized by longer 5-year overall survival and disease-free survival. Subsequent studies showed that PIP up-regulated the expression of the following pro-apoptotic genes: CRADD, DAPK1, FASLG, CD40 and BNIP2. This pro-apoptotic activity is mediated by secreted PIP and most probably involves the specific surface receptor. This study demonstrates that a high expression level of PIP sensitizes BC cells to anti-cancer drugs. Increased sensitivity to chemotherapy is the result of pro-apoptotic activity of PIP, which is evidenced by up-regulation of specific pro-apoptotic genes. As high expression of PIP significantly correlated with a better response of patients to anti-cancer drugs, this glycoprotein can be a marker for the prognostic evaluation of adjuvant chemotherapy.
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Affiliation(s)
- Anna Urbaniak
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, C.K. Norwida 31, 50-375, Wroclaw, Poland
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, T. Chalubinskiego 6a, 50-368, Wroclaw, Poland
- Laboratory of Glycobiology, Hirszfeld Institute of Immunology and Experimental Therapy, 53-114, Wroclaw, Poland
| | - Karolina Jablonska
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, T. Chalubinskiego 6a, 50-368, Wroclaw, Poland
| | - Jaroslaw Suchanski
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, C.K. Norwida 31, 50-375, Wroclaw, Poland
| | - Aleksandra Partynska
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, T. Chalubinskiego 6a, 50-368, Wroclaw, Poland
| | - Katarzyna Szymczak-Kulus
- Laboratory of Glycobiology, Hirszfeld Institute of Immunology and Experimental Therapy, 53-114, Wroclaw, Poland
| | - Rafal Matkowski
- Department of Oncology, Wroclaw Medical University, 50-368, Wroclaw, Poland
- Lower Silesian Oncology, Pulmonology and Hematology Center, 53-413, Wroclaw, Poland
| | - Adam Maciejczyk
- Department of Oncology, Wroclaw Medical University, 50-368, Wroclaw, Poland
- Lower Silesian Oncology, Pulmonology and Hematology Center, 53-413, Wroclaw, Poland
| | - Maciej Ugorski
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, C.K. Norwida 31, 50-375, Wroclaw, Poland.
| | - Piotr Dziegiel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, T. Chalubinskiego 6a, 50-368, Wroclaw, Poland.
- Department of Human Biology, Faculty of Physiotherapy, Wroclaw University of Health and Sport Sciences, 51-612, Wroclaw, Poland.
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3
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Zhang T, Xia Y, Hu L, Chen D, Gan CL, Wang L, Mei Y, Lan G, Shui X, Tian Y, Li R, Zhang M, Lee TH. Death-associated protein kinase 1 mediates Aβ42 aggregation-induced neuronal apoptosis and tau dysregulation in Alzheimer's disease. Int J Biol Sci 2022; 18:693-706. [PMID: 35002518 PMCID: PMC8741852 DOI: 10.7150/ijbs.66760] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/27/2021] [Indexed: 12/22/2022] Open
Abstract
The aggregation of amyloid-β (Aβ) peptides into oligomers and fibrils is a key pathological feature of Alzheimer's disease (AD). An increasing amount of evidence suggests that oligomeric Aβ might be the major culprit responsible for various neuropathological changes in AD. Death-associated protein kinase 1 (DAPK1) is abnormally elevated in brains of AD patients and plays an important role in modulating tau homeostasis by regulating prolyl isomerase Pin1 phosphorylation. However, it remains elusive whether and how Aβ species influence the function of DAPK1, and whether this may further affect the function and phosphorylation of tau in neurons. Herein, we demonstrated that Aβ aggregates (both oligomers and fibrils) prepared from synthetic Aβ42 peptides were able to upregulate DAPK1 protein levels and thereby its function through heat shock protein 90 (HSP90)-mediated protein stabilization. DAPK1 activation not only caused neuronal apoptosis, but also phosphorylated Pin1 at the Ser71 residue, leading to tau accumulation and phosphorylation at multiple AD-related sites in primary neurons. Both DAPK1 knockout (KO) and the application of a specific DAPK1 inhibitor could effectively protect primary neurons against Aβ aggregate-induced cell death and tau dysregulation, corroborating the critical role of DAPK1 in mediating Aβ aggregation-induced neuronal damage. Our study suggests a mechanistic link between Aβ oligomerization and tau hyperphosphorylation mediated by DAPK1, and supports the role of DAPK1 as a promising target for early intervention in AD.
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Affiliation(s)
- Tao Zhang
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Yongfang Xia
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Li Hu
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Dongmei Chen
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Chen-Ling Gan
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Long Wang
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Yingxue Mei
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Guihua Lan
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Xindong Shui
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Yuan Tian
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Ruomeng Li
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Mi Zhang
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
| | - Tae Ho Lee
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350122, China
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4
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Wang Q, Lin Y, Zhong W, Jiang Y, Lin Y. Regulatory Non-coding RNAs for Death Associated Protein Kinase Family. Front Mol Biosci 2021; 8:649100. [PMID: 34422899 PMCID: PMC8377501 DOI: 10.3389/fmolb.2021.649100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 07/26/2021] [Indexed: 01/24/2023] Open
Abstract
The death associated protein kinases (DAPKs) are a family of calcium dependent serine/threonine kinases initially identified in the regulation of apoptosis. Previous studies showed that DAPK family members, including DAPK1, DAPK2 and DAPK3 play a crucial regulatory role in malignant tumor development, in terms of cell apoptosis, proliferation, invasion and metastasis. Accumulating evidence has demonstrated that non-coding RNAs, including microRNA (miRNA), long non-coding RNA (lncRNA) and circRNA, are involved in the regulation of gene expression and tumorigenesis. Recent studies indicated that non-coding RNAs participate in the regulation of DAPKs. In this review, we summarized the current knowledge of non-coding RNAs, as well as the potential miRNAs, lncRNAs and circRNAs, that are involved in the regulation of DAPKs.
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Affiliation(s)
- Qingshui Wang
- Central Laboratory at the Second Affiliated Hospital of Fujian Traditional Chinese Medical University, Collaborative Innovation Center for Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Youyu Lin
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Wenting Zhong
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Yu Jiang
- Prenatal Diagnosis Centre, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Yao Lin
- Central Laboratory at the Second Affiliated Hospital of Fujian Traditional Chinese Medical University, Collaborative Innovation Center for Rehabilitation Technology, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, China
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5
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Comparative Proteomics Unveils LRRFIP1 as a New Player in the DAPK1 Interactome of Neurons Exposed to Oxygen and Glucose Deprivation. Antioxidants (Basel) 2020; 9:antiox9121202. [PMID: 33265962 PMCID: PMC7761126 DOI: 10.3390/antiox9121202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/01/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Death-associated protein kinase 1 (DAPK1) is a pleiotropic hub of a number of networked distributed intracellular processes. Among them, DAPK1 is known to interact with the excitotoxicity driver NMDA receptor (NMDAR), and in sudden pathophysiological conditions of the brain, e.g., stroke, several lines of evidence link DAPK1 with the transduction of glutamate-induced events that determine neuronal fate. In turn, DAPK1 expression and activity are known to be affected by the redox status of the cell. To delineate specific and differential neuronal DAPK1 interactors in stroke-like conditions in vitro, we exposed primary cultures of rat cortical neurons to oxygen/glucose deprivation (OGD), a condition that increases reactive oxygen species (ROS) and lipid peroxides. OGD or control samples were co-immunoprecipitated separately, trypsin-digested, and proteins in the interactome identified by high-resolution LC-MS/MS. Data were processed and curated using bioinformatics tools. OGD increased total DAPK1 protein levels, cleavage into shorter isoforms, and dephosphorylation to render the active DAPK1 form. The DAPK1 interactome comprises some 600 proteins, mostly involving binding, catalytic and structural molecular functions. OGD up-regulated 190 and down-regulated 192 candidate DAPK1-interacting proteins. Some differentially up-regulated interactors related to NMDAR were validated by WB. In addition, a novel differential DAPK1 partner, LRRFIP1, was further confirmed by reverse Co-IP. Furthermore, LRRFIP1 levels were increased by pro-oxidant conditions such as ODG or the ferroptosis inducer erastin. The present study identifies novel partners of DAPK1, such as LRRFIP1, which are suitable as targets for neuroprotection.
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6
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Regulation of the Expression of DAPK1 by SUMO Pathway. Biomolecules 2019; 9:biom9040151. [PMID: 30999631 PMCID: PMC6523460 DOI: 10.3390/biom9040151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/07/2019] [Accepted: 04/15/2019] [Indexed: 01/11/2023] Open
Abstract
Death Associated Protein Kinase 1 (DAPK1) is an important signaling kinase mediating the biological effect of multiple natural biomolecules such as IFN-γ, TNF-α, curcumin, etc. DAPK1 is degraded through both ubiquitin-proteasomal and lysosomal degradation pathways. To investigate the crosstalk between these two DAPK1 degradation pathways, we carried out a screen using a set of ubiquitin E2 siRNAs at the presence of Tuberous Sclerous 2 (TSC2) and identified that the small ubiquitin-like molecule (SUMO) pathway is able to regulate the protein levels of DAPK1. Inhibition of the SUMO pathway enhanced DAPK1 protein levels and the minimum domain of DAPK1 protein required for this regulation is the kinase domain, suggesting that the SUMO pathway regulates DAPK1 protein levels independent of TSC2. Suppression of the SUMO pathway did not enhance DAPK1 protein stability. In addition, mutation of the potential SUMO conjugation sites on DAPK1 kinase domain did not alter its protein stability or response to SUMO pathway inhibition. These data suggested that the SUMO pathway does not regulate DAPK1 protein degradation. The exact molecular mechanism underlying this regulation is yet to be discovered.
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7
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Wang Y, Niu H, Hu Z, Zhu M, Wang L, Han L, Qian L, Tian K, Yuan H, Lou H. Targeting the lysosome by an aminomethylated Riccardin D triggers DNA damage through cathepsin B-mediated degradation of BRCA1. J Cell Mol Med 2018; 23:1798-1812. [PMID: 30565390 PMCID: PMC6378192 DOI: 10.1111/jcmm.14077] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 12/21/2022] Open
Abstract
RD-N, an aminomethylated derivative of riccardin D, is a lysosomotropic agent that can trigger lysosomal membrane permeabilization followed by cathepsin B (CTSB)-dependent apoptosis in prostate cancer (PCa) cells, but the underlying mechanisms remain unknown. Here we show that RD-N treatment drives CTSB translocation from the lysosomes to the nucleus where it promotes DNA damage by suppression of the breast cancer 1 protein (BRCA1). Inhibition of CTSB activity with its specific inhibitors, or by CTSB-targeting siRNA or CTSB with enzyme-negative domain attenuated activation of BRCA1 and DNA damage induced by RD-N. Conversely, CTSB overexpression resulted in inhibition of BRCA1 and sensitized PCa cells to RD-N-induced cell death. Furthermore, RD-N-induced cell death was exacerbated in BRCA1-deficient cancer cells. We also demonstrated that CTSB/BRCA1-dependent DNA damage was critical for RD-N, but not for etoposide, reinforcing the importance of CTSB/BRCA1 in RD-N-mediated cell death. In addition, RD-N synergistically increased cell sensitivity to cisplatin, and this effect was more evidenced in BRCA1-deficient cancer cells. This study reveals a novel molecular mechanism that RD-N promotes CTSB-dependent DNA damage by the suppression of BRCA1 in PCa cells, leading to the identification of a potential compound that target lysosomes for cancer treatment.
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Affiliation(s)
- Yanyan Wang
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Huanmin Niu
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Zhongyi Hu
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, China
| | - Mengyuan Zhu
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Lining Wang
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Lili Han
- School of Medicine, Shandong Yingcai University, Jinan, China
| | - Lilin Qian
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Keli Tian
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, China
| | - Huiqing Yuan
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Hongxiang Lou
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
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Song L, Pei L, Hu L, Pan S, Xiong W, Liu M, Wu Y, Shang Y, Yao S. Death-associated protein kinase 1 mediates interleukin-1β production through regulating inlfammasome activation in Bv2 microglial cells and mice. Sci Rep 2018; 8:9930. [PMID: 29967321 PMCID: PMC6028446 DOI: 10.1038/s41598-018-27842-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/11/2018] [Indexed: 12/25/2022] Open
Abstract
Interleukin-1β (IL-1β) plays a crucial role in mediating inflammation and innate immunity response in the central nervous system. Death-associated protein kinase 1 (DAPK1) was shown to be involved in several cellular processes. Here, we investigated the effects of DAPK1 on IL-1β production in microglial cells. We used a combination of in vitro (Bv2 microglial cell cultures) and in vivo (mice injected with amyloid-β (Aβ)) techniques to address the role of caspase-1 activation in release of IL-1β. DAPK1 involvement was postulated through genetic approaches and pharmacological blockade of this enzyme. We found that Aβ25-35 stimulation induced IL-1β production and caspase-1 activation in LPS-primed Bv2 cells and mice. DAPK1 knockdown and catalytic activity inhibition reduced IL-1β maturation and caspase-1 activation, nevertheless, DAPK1 overexpression attenuated these effects. Aβ25-35-induced lysosomal cathepsin B leakage was required for DAPK1 activation. Furthermore, repeated DAPK1 inhibitor treatment ameliorated the memory impairment in Aβ25-35-injected mice. Taken together, our findings suggest that DAPK1 facilitates Aβ25-35-induced IL-1β production through regulating caspase-1 activation in microglial cells.
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Affiliation(s)
- Limin Song
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lei Pei
- Department of Neurobiology, Tongji Medical Collge, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lisha Hu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shangwen Pan
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Xiong
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Min Liu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yan Wu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - You Shang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Shanglong Yao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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9
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Huang Y, Lin M, Chen X, Huang C, Zhang X, Chen L, Wu K, Chen Y, Zhu Y, Lin Y. Evaluation of the prognostic and physiological functions of death associated protein kinase 1 in breast cancer. Oncol Lett 2018; 15:8261-8268. [PMID: 29805560 PMCID: PMC5958705 DOI: 10.3892/ol.2018.8439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 12/05/2017] [Indexed: 12/11/2022] Open
Abstract
Death associated protein kinase 1 (DAPK1) is a notable serine/threonine kinase involved in the regulation of multiple cellular pathways, including apoptosis and autophagy. Although DAPK1 is usually considered to be a tumor suppressor, it was previously reported to promote the viability of p53 mutant cancer cell lines and possess physiological oncogenic functions in breast cancer. However, the ability of endogenous DAPK1 to suppress breast cancer cell mobility has not been assessed. In the present study, the prognostic function of DAPK1 in a Chinese patient cohort was evaluated, and no significant association was observed between DAPK1 expression and patient survival or lymph node metastasis. In order to investigate the physiological function of endogenous DAPK1, stable inducible DAPK1 knockdown MCF7 and MDA-MB-231 cell lines were established. Consistent with previous studies, endogenous DAPK1 only regulated cell viability in p53 mutant MDA-MB-231 cells. However, knockdown of DAPK1 did not significantly affect cell motility of either MCF7 or MDA-MB-231 cells. Altogether, these results further explored the function of endogenous DAPK1 in breast cancer and may shed light in understanding the molecular signaling pathways regulating the physiological function of DAPK1.
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Affiliation(s)
- Yide Huang
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, P.R. China
| | - Meizhen Lin
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, P.R. China
| | - Xiangjin Chen
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
| | - Chaoqun Huang
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, P.R. China
| | - Xiuli Zhang
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, P.R. China
| | - Ling Chen
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
| | - Kunlin Wu
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
| | - Yupeng Chen
- Department of Pathology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
| | - Youzhi Zhu
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
| | - Yao Lin
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, P.R. China
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10
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Chuang M, Hsiao TI, Tong A, Xu S, Chisholm AD. DAPK interacts with Patronin and the microtubule cytoskeleton in epidermal development and wound repair. eLife 2016; 5. [PMID: 27661253 PMCID: PMC5053806 DOI: 10.7554/elife.15833] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 09/22/2016] [Indexed: 12/11/2022] Open
Abstract
Epidermal barrier epithelia form a first line of defense against the environment, protecting animals against infection and repairing physical damage. In C. elegans, death-associated protein kinase (DAPK-1) regulates epidermal morphogenesis, innate immunity and wound repair. Combining genetic suppressor screens and pharmacological tests, we find that DAPK-1 maintains epidermal tissue integrity through regulation of the microtubule (MT) cytoskeleton. dapk-1 epidermal phenotypes are suppressed by treatment with microtubule-destabilizing drugs and mimicked or enhanced by microtubule-stabilizing drugs. Loss of function in ptrn-1, the C. elegans member of the Patronin/Nezha/CAMSAP family of MT minus-end binding proteins, suppresses dapk-1 epidermal and innate immunity phenotypes. Over-expression of the MT-binding CKK domain of PTRN-1 triggers epidermal and immunity defects resembling those of dapk-1 mutants, and PTRN-1 localization is regulated by DAPK-1. DAPK-1 and PTRN-1 physically interact in co-immunoprecipitation experiments, and DAPK-1 itself undergoes MT-dependent transport. Our results uncover an unexpected interdependence of DAPK-1 and the microtubule cytoskeleton in maintenance of epidermal integrity.
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Affiliation(s)
- Marian Chuang
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, San Diego, United States
| | - Tiffany I Hsiao
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, San Diego, United States
| | - Amy Tong
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, San Diego, United States
| | - Suhong Xu
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, San Diego, United States
| | - Andrew D Chisholm
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, San Diego, United States
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11
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Pineda de las Infantas MJ, Torres-Rusillo S, Unciti-Broceta JD, Fernandez-Rubio P, Luque-Gonzalez MA, Gallo MA, Unciti-Broceta A, Molina IJ, Diaz-Mochon JJ. Synthesis of 6,8,9 poly-substituted purine analogue libraries as pro-apoptotic inducers of human leukemic lymphocytes and DAPK-1 inhibitors. Org Biomol Chem 2016; 13:5224-34. [PMID: 25856731 DOI: 10.1039/c5ob00230c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A 18-member library of 6,8,9-poly-substituted purines was prepared from pyrimidines, primary alcohols, and N,N-dimethylamides under basic conditions via a novel one-pot synthetic pathway controlled by amide sizes and the novel analogues were tested against two leukemia cell lines: Jurkat (acute T cell leukemia) and K562 (chronic erythroleukemia) cells. Compounds having a benzoxy group at C6 position of the aromatic ring exhibited antiproliferative activity in Jurkat cells whereas all compounds induced a lower effect on K562 cells. Analysis of cell cycle, Annexin-V staining, and cleavage of initiator caspases assays showed that the active purine analogues induce cell death by apoptosis. Based on these results, a new purine derivative was synthesized, 6-benzyloxy-9-tert-butyl-8-phenyl-9H-purine (6d), which displayed the highest activity of the series against Jurkat cell lines. Finally, (33)P-radiolabeled kinase assays using 96 recombinant human kinases known to be involved in apoptotic events were performed. Just one of the kinases tested, DAPK-1, was inhibited 50% or more by the phenotypic hits at 10 μM, suggesting that the inhibition of this target could be responsible for the induction of cell death by apoptosis. In agreement with the phenotypic results, the most active antiproliferative agent, 6d, displayed also the lowest IC50 value against recombinant DAPK1 (2.5 μM), further supporting the potential role of this protein on the observed functional response. DAPK-1 inhibition led by 6d together with its pro-apoptotic properties against the Jurkat line makes it an interesting candidate to further investigate the role of DAPK1 kinase in triggering apoptosis in cancer cells, a role which is attracting recent interest.
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Affiliation(s)
- Maria J Pineda de las Infantas
- Departamento de Química Farmacéutica y Orgánica. Facultad de Farmacia, Universidad de Granada, Campus de Cartuja s/n, 18011 Granada, Spain.
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12
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Death-associated protein kinase: A molecule with functional antagonistic duality and a potential role in inflammatory bowel disease (Review). Int J Oncol 2015; 47:5-15. [PMID: 25963636 PMCID: PMC4485655 DOI: 10.3892/ijo.2015.2998] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 03/06/2015] [Indexed: 02/06/2023] Open
Abstract
The cytoskeleton-associated serine/threonine kinase death-associated protein kinase (DAPK) has been described as a cancer gene chameleon with functional antagonistic duality in a cell type and context specific manner. The broad range of interaction partners and substrates link DAPK to inflammatory processes especially in the gut. Herein we summarize our knowledge on the role of DAPK in different cell types that play a role under inflammatory conditions in the gut. Besides some promising experimental data suggesting DAPK as an interesting drug target in inflammatory bowel disease there are many open questions regarding direct evidence for a role of DAPK in intestinal inflammation.
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13
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Schlegel CR, Georgiou ML, Misterek MB, Stöcker S, Chater ER, Munro CE, Pardo OE, Seckl MJ, Costa-Pereira AP. DAPK2 regulates oxidative stress in cancer cells by preserving mitochondrial function. Cell Death Dis 2015; 6:e1671. [PMID: 25741596 PMCID: PMC4385915 DOI: 10.1038/cddis.2015.31] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 12/12/2014] [Accepted: 12/15/2014] [Indexed: 12/24/2022]
Abstract
Death-associated protein kinase (DAPK) 2 is a serine/threonine kinase that belongs to the DAPK family. Although it shows significant structural differences from DAPK1, the founding member of this protein family, DAPK2 is also thought to be a putative tumour suppressor. Like DAPK1, it has been implicated in programmed cell death, the regulation of autophagy and diverse developmental processes. In contrast to DAPK1, however, few mechanistic studies have been carried out on DAPK2 and the majority of these have made use of tagged DAPK2, which almost invariably leads to overexpression of the protein. As a consequence, physiological roles of this kinase are still poorly understood. Using two genetically distinct cancer cell lines as models, we have identified a new role for DAPK2 in the regulation of mitochondrial integrity. RNA interference-mediated depletion of DAPK2 leads to fundamental metabolic changes, including significantly decreased rate of oxidative phosphorylation in combination with overall destabilised mitochondrial membrane potential. This phenotype is further corroborated by an increase in the production of mitochondrial superoxide anions and increased oxidative stress. This then leads to the activation of classical stress-activated kinases such as ERK, JNK and p38, which is observed on DAPK2 genetic ablation. Interestingly, the generation of oxidative stress is further enhanced on overexpression of a kinase-dead DAPK2 mutant indicating that it is the kinase domain of DAPK2 that is important to maintain mitochondrial integrity and, by inference, for cellular metabolism.
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Affiliation(s)
- C R Schlegel
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - M L Georgiou
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - M B Misterek
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - S Stöcker
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - E R Chater
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - C E Munro
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - O E Pardo
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - M J Seckl
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
| | - A P Costa-Pereira
- Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Hammersmith Hospital Campus, ICTEM, Du Cane Road, London W12 0NN, UK
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14
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Abstract
Death associated protein kinase 1 (DAPK) is an important serine/theoreine kinase involved in various cellular processes such as apoptosis, autophagy and inflammation. DAPK expression and activity are misregulated in multiple diseases including cancer, neuronal death, stoke, et al. Methylation of the DAPK gene is common in many types of cancer and can lead to loss of DAPK expression. In this review, we summarize the pathological status and functional roles of DAPK in disease and compare the published reagents that can manipulate the expression or activity of DAPK. The pleiotropic functions of DAPK make it an intriguing target and the barriers and opportunities for targeting DAPK for future clinical application are discussed.
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15
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Abstract
Death-associated protein kinase (DAPK) is a tumor suppressor and negatively regulates several activation signals. Consistent with its potential anti-inflammatory activity, DAPK promotes the formation of IFN-γ-activated inhibitor of translation (GAIT) complex that suppresses the translation of selected inflammatory genes. DAPK has been found to inhibit tumor necrosis factor-α (TNF-α)- or lipopolysaccharides (LPS)-induced NF-κB activation and pro-inflammatory cytokine expression. Inflammation is always associated with T cell activation, while DAPK attenuates T cell activation by a selective suppression in T cell receptor-triggered NF-κB activation. Recent studies, however, also reveal a contribution of DAPK to pro-inflammatory processes. DAPK is shown to mediate pro-inflammatory signaling downstream of TNF-α, LPS, IL-17, or IL-32. In addition, DAPK is required for the full formation of NLRP3 inflammasome, essential for the generation of IL-1β and IL-18. These results suggest the complicated role of DAPK in the regulation of inflammation that is likely dependent on cell types and environmental cues.
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Affiliation(s)
- Ming-Zong Lai
- Institute of Molecular Biology, Academia Sinica, Taipei, 11529, Taiwan, ROC,
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16
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Gallagher PJ, Blue EK. Post-translational regulation of the cellular levels of DAPK. Apoptosis 2013; 19:306-15. [DOI: 10.1007/s10495-013-0936-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Nair S, Hagberg H, Krishnamurthy R, Thornton C, Mallard C. Death associated protein kinases: molecular structure and brain injury. Int J Mol Sci 2013; 14:13858-72. [PMID: 23880846 PMCID: PMC3742222 DOI: 10.3390/ijms140713858] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 06/14/2013] [Accepted: 06/27/2013] [Indexed: 01/09/2023] Open
Abstract
Perinatal brain damage underlies an important share of motor and neurodevelopmental disabilities, such as cerebral palsy, cognitive impairment, visual dysfunction and epilepsy. Clinical, epidemiological, and experimental studies have revealed that factors such as inflammation, excitotoxicity and oxidative stress contribute considerably to both white and grey matter injury in the immature brain. A member of the death associated protein kinase (DAPk) family, DAPk1, has been implicated in cerebral ischemic damage, whereby DAPk1 potentiates NMDA receptor-mediated excitotoxicity through interaction with the NR2BR subunit. DAPk1 also mediate a range of activities from autophagy, membrane blebbing and DNA fragmentation ultimately leading to cell death. DAPk mRNA levels are particularly highly expressed in the developing brain and thus, we hypothesize that DAPk1 may play a role in perinatal brain injury. In addition to reviewing current knowledge, we present new aspects of the molecular structure of DAPk domains, and relate these findings to interacting partners of DAPk1, DAPk-regulation in NMDA-induced cerebral injury and novel approaches to blocking the injurious effects of DAPk1.
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Affiliation(s)
- Syam Nair
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg 40530, Sweden; E-Mail:
- School of Biotechnology, National Institute of Technology Calicut, Calicut 673601, India; E-Mail:
| | - Henrik Hagberg
- Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg 40530, Sweden; E-Mail:
- Centre for the Developing Brain, Division of Imaging Sciences & Biomedical Engineering, The Rayne Institute, King’s College London St Thomas’ Hospital, London SE1 7EH, UK; E-Mail:
| | - Rajanikant Krishnamurthy
- School of Biotechnology, National Institute of Technology Calicut, Calicut 673601, India; E-Mail:
| | - Claire Thornton
- Centre for the Developing Brain, Division of Imaging Sciences & Biomedical Engineering, The Rayne Institute, King’s College London St Thomas’ Hospital, London SE1 7EH, UK; E-Mail:
| | - Carina Mallard
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg 40530, Sweden; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +46-31-7863-498; Fax: +46-31-7863-512
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18
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Wu B, Yao H, Wang S, Xu R. DAPK1 modulates a curcumin-induced G2/M arrest and apoptosis by regulating STAT3, NF-κB, and caspase-3 activation. Biochem Biophys Res Commun 2013; 434:75-80. [PMID: 23545262 DOI: 10.1016/j.bbrc.2013.03.063] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 03/21/2013] [Indexed: 10/27/2022]
Abstract
Curcumin, an active polyphenol extracted from the perennial herb Curcuma longa, controls various molecules involved in tumor cell death. In this study, we found that the tumor suppressor death-associated protein kinase 1 (DAPK1) plays a vital role in the anti-carcinogenic effects of curcumin. We found that curcumin increased DAPK1 expression at the mRNA and protein levels in U251 cells, and that the siRNA-mediated knockdown of DAPK1 attenuated the curcumin-induced inhibition of STAT3 and NF-κB. Moreover, DAPK1 suppression diminished curcumin-induced caspase-3 activation. In addition, we confirmed that DAPK1 was required for a curcumin-induced G2/M cell cycle arrest and apoptosis. Thus, DAPK1 is involved in curcumin-mediated death pathways. Our data suggest novel mechanisms for curcumin in cancer therapy.
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Affiliation(s)
- Bingshan Wu
- Affiliated Bayi Brain Hospital, Bayi Clinical College, Southern Medical University, Beijing, PR China
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19
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Widmer DS, Hoek KS, Cheng PF, Eichhoff OM, Biedermann T, Raaijmakers MIG, Hemmi S, Dummer R, Levesque MP. Hypoxia contributes to melanoma heterogeneity by triggering HIF1α-dependent phenotype switching. J Invest Dermatol 2013; 133:2436-2443. [PMID: 23474946 DOI: 10.1038/jid.2013.115] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 01/21/2013] [Accepted: 02/06/2013] [Indexed: 02/06/2023]
Abstract
We have previously reported a model for melanoma progression in which oscillation between melanoma cell phenotypes characterized by invasion or proliferation is fundamental to tumor heterogeneity and disease progression. In this study we examine the possible role of hypoxia as one of the microenvironmental influences driving metastatic progression by promoting a switch from a proliferative to an invasive phenotype. Immunohistochemistry on primary human cutaneous melanoma biopsies showed intratumoral heterogeneity for cells expressing melanocytic markers, and a loss of these markers correlated with hypoxic regions. Furthermore, we show that the downregulation of melanocytic markers is dependent on hypoxia inducible factor 1α (HIF1α), a known regulator of the hypoxic response. In vitro invasion assays showed that a hypoxic environment increases the invasiveness of proliferative melanoma cell cultures in a HIF1α-dependent manner. In contrast, invasive phenotype melanoma cells showed no increase in invasive potential upon exposure to hypoxia. Thus, exposure of proliferative melanoma cells to hypoxic microenvironments is sufficient, in a HIF1α-dependent manner, to downregulate melanocytic marker expression and increase their invasive potential.
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Affiliation(s)
- Daniel S Widmer
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Keith S Hoek
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Phil F Cheng
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Ossia M Eichhoff
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Thomas Biedermann
- Department of Surgery, University Children's Hospital Zürich, Zürich, Switzerland
| | | | - Silvio Hemmi
- Faculty of Mathematics and Natural Sciences, Institute of Molecular Life Sciences, University of Zürich, Zürich, Switzerland
| | - Reinhard Dummer
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Mitchell P Levesque
- Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland.
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20
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A novel derivative of riccardin D induces cell death through lysosomal rupture in vitro and inhibits tumor growth in vivo. Cancer Lett 2013. [DOI: 10.1016/j.canlet.2012.10.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Sancho-Martínez SM, Prieto-García L, Prieto M, López-Novoa JM, López-Hernández FJ. Subcellular targets of cisplatin cytotoxicity: An integrated view. Pharmacol Ther 2012; 136:35-55. [DOI: 10.1016/j.pharmthera.2012.07.003] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 06/28/2012] [Indexed: 12/29/2022]
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22
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Grifolin, a potent antitumour natural product upregulates death-associated protein kinase 1 DAPK1 via p53 in nasopharyngeal carcinoma cells. Eur J Cancer 2011; 47:316-25. [DOI: 10.1016/j.ejca.2010.09.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 09/03/2010] [Accepted: 09/10/2010] [Indexed: 11/19/2022]
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23
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Lin Y, Henderson P, Pettersson S, Satsangi J, Hupp T, Stevens C. Tuberous sclerosis-2 (TSC2) regulates the stability of death-associated protein kinase-1 (DAPK) through a lysosome-dependent degradation pathway. FEBS J 2010; 278:354-70. [PMID: 21134130 DOI: 10.1111/j.1742-4658.2010.07959.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yao Lin
- University of Edinburgh, Institute of Genetics and Molecular Medicine, Edinburgh, UK
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24
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The Cullin 3 substrate adaptor KLHL20 mediates DAPK ubiquitination to control interferon responses. EMBO J 2010; 29:1748-61. [PMID: 20389280 DOI: 10.1038/emboj.2010.62] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2009] [Accepted: 03/18/2010] [Indexed: 01/05/2023] Open
Abstract
Death-associated protein kinase (DAPK) was identified as a mediator of interferon (IFN)-induced cell death. How IFN controls DAPK activation remains largely unknown. Here, we identify the BTB-Kelch protein KLHL20 as a negative regulator of DAPK. KLHL20 binds DAPK and Cullin 3 (Cul3) via its Kelch-repeat domain and BTB domain, respectively. The KLHL20-Cul3-ROC1 E3 ligase complex promotes DAPK polyubiquitination, thereby inducing the proteasomal degradation of DAPK. Accordingly, depletion of KLHL20 diminishes DAPK ubiquitination and degradation. The KLHL20-mediated DAPK ubiquitination is suppressed in cells receiving IFN-alpha or IFN-gamma, which induces an enrichment/sequestration of KLHL20 in the PML nuclear bodies, thereby separating KLHL20 from DAPK. Consequently, IFN triggers the stabilization of DAPK. This mechanism of DAPK stabilization is crucial for determining IFN responsiveness of tumor cells and contributes to IFN-induced autophagy. This study identifies KLHL20-Cul3-ROC1 as an E3 ligase for DAPK ubiquitination and reveals a regulatory mechanism of DAPK, through blocking its accessibility to this E3 ligase, in IFN-induced apoptotic and autophagic death. Our findings may be relevant to the problem of IFN resistance in cancer therapy.
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25
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Widau RC, Jin Y, Dixon SA, Wadzinski BE, Gallagher PJ. Protein phosphatase 2A (PP2A) holoenzymes regulate death-associated protein kinase (DAPK) in ceramide-induced anoikis. J Biol Chem 2010; 285:13827-38. [PMID: 20220139 DOI: 10.1074/jbc.m109.085076] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The tumor suppressor, death-associated protein kinase (DAPK), is a Ca(2+)/calmodulin-regulated Ser/Thr kinase with an important role in regulating cytoskeletal dynamics. Autophosphorylation within the calmodulin-binding domain at Ser-308 inhibits DAPK catalytic activity. Dephosphorylation of Ser-308 by a previously unknown phosphatase enhances kinase activity and proteasome-mediated degradation of DAPK. In these studies, we identified two holoenzyme forms of protein phosphatase 2A (PP2A), ABalphaC and ABdeltaC, as DAPK-interacting proteins. These phosphatase holoenzymes dephosphorylate DAPK at Ser-308 in vitro and in vivo resulting in enhanced kinase activity of DAPK. The enzymatic activity of PP2A also negatively regulates DAPK levels by enhancing proteasome-mediated degradation of the kinase. Overexpression of wild type DAPK induces cell rounding and detachment in HEK293 cells; however, this effect is not observed following expression of an inactive DAPK S308E mutant. Finally, activation of DAPK by PP2A was found to be required for ceramide-induced anoikis. Together, our results provide a mechanism by which PP2A and DAPK activities control cell adhesion and anoikis.
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Affiliation(s)
- Ryan C Widau
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
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26
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Lin Y, Hupp TR, Stevens C. Death-associated protein kinase (DAPK) and signal transduction: additional roles beyond cell death. FEBS J 2009; 277:48-57. [DOI: 10.1111/j.1742-4658.2009.07411.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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27
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Bajbouj K, Poehlmann A, Kuester D, Drewes T, Haase K, Hartig R, Teller A, Kliche S, Walluscheck D, Ivanovska J, Chakilam S, Ulitzsch A, Bommhardt U, Leverkus M, Roessner A, Schneider-Stock R. RETRACTED: Identification of phosphorylated p38 as a novel DAPK-interacting partner during TNFalpha-induced apoptosis in colorectal tumor cells. THE AMERICAN JOURNAL OF PATHOLOGY 2009; 175:557-70. [PMID: 19628771 DOI: 10.2353/ajpath.2009.080853] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Death-associated protein kinase (DAPK) is a serine/threonine kinase that contributes to pro-apoptotic signaling on cytokine exposure. The role of DAPK in macrophage-associated tumor cell death is currently unknown. Recently, we suggested a new function for DAPK in the induction of apoptosis during the interaction between colorectal tumor cells and tumor-associated macrophages. Using a cell-culture model with conditioned supernatants of differentiated/activated macrophages (U937) and human HCT116 colorectal tumor cells, we replicated DAPK-associated tumor cell death; this model likely reflects the in vivo tumor setting. In this study, we show that tumor necrosis factor-alpha exposure under conditions of macrophage activation induced DAPK-dependent apoptosis in the colorectal tumor cell line HCT116. Simultaneously, early phosphorylation of p38 mitogen-activated protein kinase (phospho-p38) was observed. We identified the phospho-p38 mitogen-activated protein kinase as a novel interacting protein of DAPK in tumor necrosis factor-alpha-induced apoptosis. The general relevance of this interaction was verified in two colorectal cell lines without functional p53 (ie, HCT116 p53(-/-) and HT29 mutant) and in human colon cancer and ulcerative colitis tissues. Supernatants of freshly isolated human macrophages were also able to induce DAPK and phospho-p38. Our findings highlight the mechanisms that underlie DAPK regulation in tumor cell death evoked by immune cells.
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Affiliation(s)
- Khuloud Bajbouj
- Experimental Tumor Pathology, Institute of Pathology, University of Erlangen-Nuremberg, Universitätsstr. 22, 91054 Erlangen, Germany
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The alternative splice variant of DAPK-1, s-DAPK-1, induces proteasome-independent DAPK-1 destabilization. Mol Cell Biochem 2009; 328:101-7. [DOI: 10.1007/s11010-009-0079-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 02/24/2009] [Indexed: 10/21/2022]
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29
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Stevens C, Lin Y, Harrison B, Burch L, Ridgway RA, Sansom O, Hupp T. Peptide combinatorial libraries identify TSC2 as a death-associated protein kinase (DAPK) death domain-binding protein and reveal a stimulatory role for DAPK in mTORC1 signaling. J Biol Chem 2008; 284:334-344. [PMID: 18974095 DOI: 10.1074/jbc.m805165200] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Death-associated protein kinase (DAPK) is a multidomain enzyme that plays a central role in autophagic and apoptotic signaling, although the protein-protein interactions regulating DAPK functions are not well defined. Peptide aptamer libraries were used to identify the tumor suppressor protein tuberin (TSC2) as a novel DAPK death domain-binding protein, and we evaluated whether DAPK is a positive or negative effector of the TSC2-regulated mammalian target of rapamycin (mTORC1) signaling pathway. Binding studies using death domain miniproteins in vitro and deletion analysis in vivo determined that the death domain of DAPK is the major site for the interaction with TSC2. Recombinant DAPK phosphorylates TSC2 in vitro, and DAPK kinase activity is stimulated by growth factor signaling. Transfection of DAPK promotes phosphorylation of TSC2 in vivo, whereas short interfering RNA-mediated attenuation of DAPK reduces growth factor-stimulated phosphorylation of TSC2. DAPK-dependent phosphorylation leads to TSC1-TSC2 complex dissociation, and consequently manipulation of DAPK by transfection or short interfering RNA demonstrated that DAPK is a positive regulator of mTORC1 in response to growth factor activation. Epistatic studies suggest that DAPK functions downstream from the RAS-MEK-ERK and phosphatidylinositol 3-kinase-AKT growth factor signaling pathways. DAPK(+/-) mouse embryo fibroblasts have attenuated mTORC1 signaling compared with DAPK+/+ counterparts, and overexpression of DAPK in DAPK(+/-) MEFs stimulates mTORC1 activity. These data uncover a novel interaction between DAPK and TSC2 proteins that has revealed a positive link between growth factor stimulation of DAPK and mTORC1 signaling that may ultimately affect autophagy, cell survival, or apoptosis.
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Affiliation(s)
- Craig Stevens
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Yao Lin
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Ben Harrison
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Lindsay Burch
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Rachel A Ridgway
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Owen Sansom
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom
| | - Ted Hupp
- Institute of Genetics and Molecular Medicine, CRUK p53 Signal Transduction Laboratories, University of Edinburgh, Edinburgh EH4 2XR, United Kingdom and the CRUK Beatson Institute for Cancer Research, Glasgow G61 1BD, United Kingdom.
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Lin Y, Stevens C, Hrstka R, Harrison B, Fourtouna A, Pathuri S, Vojtesek B, Hupp T. An alternative transcript from the death-associated protein kinase 1 locus encoding a small protein selectively mediates membrane blebbing. FEBS J 2008; 275:2574-84. [DOI: 10.1111/j.1742-4658.2008.06404.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Harrison B, Kraus M, Burch L, Stevens C, Craig A, Gordon-Weeks P, Hupp TR. DAPK-1 Binding to a Linear Peptide Motif in MAP1B Stimulates Autophagy and Membrane Blebbing. J Biol Chem 2008; 283:9999-10014. [DOI: 10.1074/jbc.m706040200] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Chuang YT, Fang LW, Lin-Feng MH, Chen RH, Lai MZ. The Tumor Suppressor Death-Associated Protein Kinase Targets to TCR-Stimulated NF-κB Activation. THE JOURNAL OF IMMUNOLOGY 2008; 180:3238-49. [DOI: 10.4049/jimmunol.180.5.3238] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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