1
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Bellah SF, Xiong F, Dou Z, Yang F, Liu X, Yao X, Gao X, Zhang L. PLK1 phosphorylation of ZW10 guides accurate chromosome segregation in mitosis. J Mol Cell Biol 2024; 16:mjae008. [PMID: 38402459 PMCID: PMC11328731 DOI: 10.1093/jmcb/mjae008] [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: 09/03/2023] [Revised: 11/09/2023] [Accepted: 02/23/2024] [Indexed: 02/26/2024] Open
Abstract
Stable transmission of genetic information during cell division requires faithful chromosome segregation. Mounting evidence has demonstrated that polo-like kinase 1 (PLK1) dynamics at kinetochores control correct kinetochore-microtubule attachments and subsequent silencing of the spindle assembly checkpoint. However, the mechanisms underlying PLK1-mediated silencing of the spindle checkpoint remain elusive. Here, we identified a regulatory mechanism by which PLK1-elicited zeste white 10 (ZW10) phosphorylation regulates spindle checkpoint silencing in mitosis. ZW10 is a cognate substrate of PLK1, and the phosphorylation of ZW10 at Ser12 enables dynamic ZW10-Zwint1 interactions. Inhibition of ZW10 phosphorylation resulted in misaligned chromosomes, while persistent expression of phospho-mimicking ZW10 mutant caused premature anaphase, in which sister chromatids entangled as cells entered anaphase. These findings reveal the previously uncharacterized PLK1-ZW10 interaction through which dynamic phosphorylation of ZW10 fine-tunes accurate chromosome segregation in mitosis.
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Affiliation(s)
- Sm Faysal Bellah
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
| | - Fangyuan Xiong
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
| | - Zhen Dou
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Fengrui Yang
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
| | - Xing Liu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Xuebiao Yao
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Xinjiao Gao
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Liangyu Zhang
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China School of Life Sciences, Hefei 230027, China
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
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2
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Verrillo G, Obeid AM, Genco A, Scrofani J, Orange F, Hanache S, Mignon J, Leyder T, Michaux C, Kempeneers C, Bricmont N, Herkenne S, Vernos I, Martin M, Mottet D. Non-canonical role for the BAF complex subunit DPF3 in mitosis and ciliogenesis. J Cell Sci 2024; 137:jcs261744. [PMID: 38661008 PMCID: PMC11166463 DOI: 10.1242/jcs.261744] [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: 10/27/2023] [Accepted: 04/04/2024] [Indexed: 04/26/2024] Open
Abstract
DPF3, along with other subunits, is a well-known component of the BAF chromatin remodeling complex, which plays a key role in regulating chromatin remodeling activity and gene expression. Here, we elucidated a non-canonical localization and role for DPF3. We showed that DPF3 dynamically localizes to the centriolar satellites in interphase and to the centrosome, spindle midzone and bridging fiber area, and midbodies during mitosis. Loss of DPF3 causes kinetochore fiber instability, unstable kinetochore-microtubule attachment and defects in chromosome alignment, resulting in altered mitotic progression, cell death and genomic instability. In addition, we also demonstrated that DPF3 localizes to centriolar satellites at the base of primary cilia and is required for ciliogenesis by regulating axoneme extension. Taken together, these findings uncover a moonlighting dual function for DPF3 during mitosis and ciliogenesis.
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Affiliation(s)
- Giulia Verrillo
- University of Liege, GIGA – Research Institute, Molecular Analysis of Gene Expression (MAGE) Laboratory, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
| | - Anna Maria Obeid
- University of Liege, GIGA – Research Institute, Molecular Analysis of Gene Expression (MAGE) Laboratory, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
| | - Alexia Genco
- University of Liege, GIGA – Research Institute, Molecular Analysis of Gene Expression (MAGE) Laboratory, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
| | - Jacopo Scrofani
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain
| | - François Orange
- Université Côte d'Azur, Centre Commun de Microscopie Appliquée (CCMA), 06100 Nice, France
| | - Sarah Hanache
- University of Liege, GIGA – Research Institute, Molecular Analysis of Gene Expression (MAGE) Laboratory, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
| | - Julien Mignon
- University of Namur, Laboratory of Physical Chemistry of Biomolecules, Unité de Chimie Physique Théorique et Structurale (UCPTS), Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Tanguy Leyder
- University of Namur, Laboratory of Physical Chemistry of Biomolecules, Unité de Chimie Physique Théorique et Structurale (UCPTS), Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Catherine Michaux
- University of Namur, Laboratory of Physical Chemistry of Biomolecules, Unité de Chimie Physique Théorique et Structurale (UCPTS), Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Céline Kempeneers
- University of Liege, Pneumology Laboratory, I3 Group, GIGA Research Center, B-4000 Liège, Belgium
- Division of Respirology, Department of Pediatrics, University Hospital Liège, B-4000 Liège, Belgium
| | - Noëmie Bricmont
- University of Liege, Pneumology Laboratory, I3 Group, GIGA Research Center, B-4000 Liège, Belgium
- Division of Respirology, Department of Pediatrics, University Hospital Liège, B-4000 Liège, Belgium
| | - Stephanie Herkenne
- University of Liege, GIGA-Cancer, Laboratory of Mitochondria and Cell Communication, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
| | - Isabelle Vernos
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain
- Universitat Pompeu Fabra (UPF), Barcelona 08002, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona 08010, Spain
| | - Maud Martin
- Laboratory of Neurovascular Signaling, Department of Molecular Biology, ULB Neuroscience Institute, Université libre de Bruxelles, B-6041 Gosselies, Belgium
| | - Denis Mottet
- University of Liege, GIGA – Research Institute, Molecular Analysis of Gene Expression (MAGE) Laboratory, B34, Avenue de l'Hôpital, B-4000 Liège, Belgium
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3
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Li J, Yang F, Wang Z, Zheng S, Zhang S, Wang C, He B, Wang J, Wang H. METTL16-mediated N6-methyladenosine modification of Soga1 enables proper chromosome segregation and chromosomal stability in colorectal cancer. Cell Prolif 2024; 57:e13590. [PMID: 38084791 PMCID: PMC11056707 DOI: 10.1111/cpr.13590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/25/2023] [Accepted: 11/29/2023] [Indexed: 04/30/2024] Open
Abstract
N6-methyladenosine (m6A) is the most prevalent internal modification in mammalian messenger RNAs and is associated with numerous biological processes. However, its role in chromosomal instability remains to be established. Here, we report that an RNA m6A methyltransferase, METTL16, plays an indispensable role in the progression of chromosome segregation and is required to preserve chromosome stability in colorectal cancer (CRC) cells. Depletion or inhibition of the methyltransferase activity of METTL16 results in abnormal kinetochore-microtubule attachment during mitosis, leading to delayed mitosis, lagging chromosomes, chromosome mis-segregation and chromosomal instability. Mechanistically, METTL16 exerts its oncogenic effects by enhancing the expression of suppressor of glucose by autophagy 1 (Soga1) in an m6A-dependent manner. CDK1 phosphorylates Soga1, thereby triggering its direct interaction with the polo box domain of PLK1. This interaction facilitates PLK1 activation and promotes mitotic progression. Therefore, targeting the METTL16-Soga1 pathway may provide a potential treatment strategy against CRC because of its essential role in maintaining chromosomal stability.
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Affiliation(s)
- Jimin Li
- Department of Laboratory MedicineThe Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefeiChina
| | - Fang Yang
- Department of Clinical LaboratoryThe First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College)WuhuChina
| | - Zeyu Wang
- Graduate School, Bengbu Medical CollegeBengbuChina
| | - Siqing Zheng
- School of PharmacyAnhui Medical UniversityHefeiChina
| | - Shuang Zhang
- Department of Laboratory MedicineThe Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefeiChina
| | - Chen Wang
- Department of Laboratory MedicineThe Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefeiChina
| | - Bing He
- Department of Laboratory MedicineThe Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefeiChina
| | - Jia‐Bei Wang
- Department of Hepatobiliary Surgery, Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHeifeiChina
| | - Hao Wang
- Department of Laboratory MedicineThe Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefeiChina
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4
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Ouyang W, Li Q, Niu Q, Qui M, Fu H, Du Y, Mo X. A multiplexed time-resolved fluorescence resonance energy transfer ultrahigh-throughput screening assay for targeting the SMAD4-SMAD3-DNA complex. J Mol Cell Biol 2024; 15:mjad068. [PMID: 37968137 PMCID: PMC11063955 DOI: 10.1093/jmcb/mjad068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/07/2023] [Accepted: 11/14/2023] [Indexed: 11/17/2023] Open
Abstract
The transforming growth factor-beta (TGFβ) signaling pathway plays crucial roles in the establishment of an immunosuppressive tumor microenvironment, making anti-TGFβ agents a significant area of interest in cancer immunotherapy. However, the clinical translation of current anti-TGFβ agents that target upstream cytokines and receptors remains challenging. Therefore, the development of small-molecule inhibitors specifically targeting SMAD4, the downstream master regulator of the TGFβ pathway, would offer an alternative approach with significant therapeutic potential for anti-TGFβ signaling. In this study, we present the development of a cell lysate-based multiplexed time-resolved fluorescence resonance energy transfer (TR-FRET) assay in an ultrahigh-throughput screening (uHTS) 1536-well plate format. This assay enables simultaneous monitoring of the protein‒protein interaction between SMAD4 and SMAD3, as well as the protein‒DNA interaction between SMADs and their consensus DNA-binding motif. The multiplexed TR-FRET assay exhibits high sensitivity, allowing the dynamic analysis of the SMAD4-SMAD3-DNA complex at single-amino acid resolution. Moreover, the multiplexed uHTS assay demonstrates robustness for screening small-molecule inhibitors. Through a pilot screening of an FDA-approved bioactive compound library, we identified gambogic acid and gambogenic acid as potential hit compounds. These proof-of-concept findings underscore the utility of our optimized multiplexed TR-FRET platform for large-scale screening to discover small-molecule inhibitors that target the SMAD4-SMAD3-DNA complex as novel anti-TGFβ signaling agents.
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Affiliation(s)
- Wukun Ouyang
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Qianjin Li
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Qiankun Niu
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Min Qui
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Haian Fu
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Atlanta, GA 30322, USA
- Department of Hematology and Medical Oncology and Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA
| | - Yuhong Du
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Xiulei Mo
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
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5
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Dou Z, Liu R, Gui P, Fu C, Lippincott-Schwartz J, Yao X, Liu X. Fluorescence complementation-based FRET imaging reveals centromere assembly dynamics. Mol Biol Cell 2024; 35:ar51. [PMID: 38381564 PMCID: PMC11064673 DOI: 10.1091/mbc.e23-09-0379] [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: 09/27/2023] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 02/23/2024] Open
Abstract
Visualization of specific molecules and their assembly in real time and space is essential to delineate how cellular dynamics and signaling circuit are orchestrated during cell division cycle. Our recent studies reveal structural insights into human centromere-kinetochore core CCAN complex. Here we introduce a method for optically imaging trimeric and tetrameric protein interactions at nanometer spatial resolution in live cells using fluorescence complementation-based Förster resonance energy transfer (FC-FRET). Complementary fluorescent protein molecules were first used to visualize dimerization followed by FRET measurements. Using FC-FRET, we visualized centromere CENP-SXTW tetramer assembly dynamics in live cells, and dimeric interactions between CENP-TW dimer and kinetochore protein Spc24/25 dimer in dividing cells. We further delineated the interactions of monomeric CENP-T with Spc24/25 dimer in dividing cells. Surprisingly, our analyses revealed critical role of CDK1 kinase activity in the initial recruitment of Spc24/25 by CENP-T. However, interactions between CENP-T and Spc24/25 during chromosome segregation is independent of CDK1. Thus, FC-FRET provides a unique approach to delineate spatiotemporal dynamics of trimerized and tetramerized proteins at nanometer scale and establishes a platform to report the precise regulation of multimeric protein interactions in space and time in live cells.
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Affiliation(s)
- Zhen Dou
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Ran Liu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Ping Gui
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
- Molecular Imaging Center, Morehouse School of Medicine, Atlanta, GA 30310
- Key Laboratory of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Chuanhai Fu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
| | | | - Xuebiao Yao
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Xing Liu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Center for Cross-disciplinary Sciences, University of Science and Technology of China, Hefei 230027, China
- Molecular Imaging Center, Morehouse School of Medicine, Atlanta, GA 30310
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6
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Jian Y, Jiang Y, Nie L, Dou Z, Liu X, Fu C. Phosphorylation of Bub1 by Mph1 promotes Bub1 signaling at the kinetochore to ensure accurate chromosome segregation. J Biol Chem 2024; 300:105559. [PMID: 38097187 PMCID: PMC10805674 DOI: 10.1016/j.jbc.2023.105559] [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: 07/04/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 01/02/2024] Open
Abstract
Bub1 is a conserved mitotic kinase involved in signaling of the spindle assembly checkpoint. Multiple phosphorylation sites on Bub1 have been characterized, yet it is challenging to understand the interplay between the multiple phosphorylation sites due to the limited availability of phosphospecific antibodies. In addition, phosphoregulation of Bub1 in Schizosaccharomyces pombe is poorly understood. Here we report the identification of a new Mph1/Mps1-mediated phosphorylation site, i.e., Ser532, of Bub1 in Schizosaccharomyces pombe. A phosphospecific antibody against phosphorylated Bub1-Ser532 was developed. Using the phosphospecific antibody, we demonstrated that phosphorylation of Bub1-Ser352 was mediated specifically by Mph1/Mps1 and took place during early mitosis. Moreover, live-cell microscopy showed that inhibition of the phosphorylation of Bub1 at Ser532 impaired the localization of Bub1, Mad1, and Mad2 to the kinetochore. In addition, inhibition of the phosphorylation of Bub1 at Ser532 caused anaphase B lagging chromosomes. Hence, our study constitutes a model in which Mph1/Mps1-mediated phosphorylation of fission yeast Bub1 promotes proper kinetochore localization of Bub1 and faithful chromosome segregation.
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Affiliation(s)
- Yanze Jian
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yueyue Jiang
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Lingyun Nie
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Zhen Dou
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Xing Liu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Chuanhai Fu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China.
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7
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Garlapati C, Joshi S, Bhattarai S, Krishnamurthy J, Turaga RC, Nguyen T, Li X, Aneja R. PLK1 and AURKB phosphorylate survivin differentially to affect proliferation in racially distinct triple-negative breast cancer. Cell Death Dis 2023; 14:12. [PMID: 36627281 PMCID: PMC9832024 DOI: 10.1038/s41419-022-05539-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 12/15/2022] [Accepted: 12/22/2022] [Indexed: 01/12/2023]
Abstract
Protein diversity due to alternative mRNA splicing or post-translational modifications (PTMs) plays a vital role in various cellular functions. The mitotic kinases polo-like kinase 1 (PLK1) and Aurora B (AURKB) phosphorylate survivin, an inhibitor of apoptosis (IAP) family member, thereby regulating cell proliferation. PLK1, AURKB, and survivin are overexpressed in triple-negative breast cancer (TNBC), an aggressive breast cancer subtype. TNBC is associated with high proliferative capacity, high rates of distant metastasis, and treatment resistance. The proliferation-promoting protein survivin and its activating kinases, PLK1 and AURKB, are overexpressed in TNBC. In this study, we investigated the role of survivin phosphorylation in racial disparities in TNBC cell proliferation. Analysis of TCGA TNBC data revealed higher expression levels of PLK1 (P = 0.026) and AURKB (P = 0.045) in African Americans (AAs; n = 41) than in European Americans (EAs; n = 86). In contrast, no significant racial differences in survivin mRNA or protein levels were observed. AA TNBC cells exhibited higher p-survivin levels than EA TNBC cells. Survivin silencing using small interfering RNAs significantly attenuated cell proliferation and cell cycle progression in AA TNBC cells, but not in EA TNBC cells. In addition, PLK1 and AURKB inhibition with volasertib and barasertib significantly inhibited the growth of AA TNBC xenografts, but not of EA TNBC tumors. These data suggest that inhibition of PLK1 and AURKB suppresses cell proliferation and tumor growth, specifically in AA TNBC. These findings suggest that targeting survivin phosphorylation may be a viable therapeutic option for AA patients with TNBC.
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Affiliation(s)
- Chakravarthy Garlapati
- Alkermes Inc, Waltham, MA, 02451, USA
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Shriya Joshi
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Shristi Bhattarai
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | | | | | - Thi Nguyen
- Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Xiaoxian Li
- Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Ritu Aneja
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA.
- School of Health Professions, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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8
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Akbar H, Cao J, Wang D, Yuan X, Zhang M, Muthusamy S, Song X, Liu X, Aikhionbare F, Yao X, Gao X, Liu X. Acetylation of Nup62 by TIP60 ensures accurate chromosome segregation in mitosis. J Mol Cell Biol 2022; 14:6747133. [PMID: 36190325 PMCID: PMC9926331 DOI: 10.1093/jmcb/mjac056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/14/2022] [Accepted: 09/29/2022] [Indexed: 11/14/2022] Open
Abstract
Stable transmission of genetic information during cell division requires faithful mitotic spindle assembly and chromosome segregation. In eukaryotic cells, nuclear envelope breakdown (NEBD) is required for proper chromosome segregation. Although a list of mitotic kinases has been implicated in NEBD, how they coordinate their activity to dissolve the nuclear envelope and protein machinery such as nuclear pore complexes was unclear. Here, we identified a regulatory mechanism in which Nup62 is acetylated by TIP60 in human cell division. Nup62 is a novel substrate of TIP60, and the acetylation of Lys432 by TIP60 dissolves nucleoporin Nup62-Nup58-Nup54 complex during entry into mitosis. Importantly, this acetylation-elicited remodeling of nucleoporin complex promotes the distribution of Nup62 to the mitotic spindle, which is indispensable for orchestrating correct spindle orientation. Moreover, suppression of Nup62 perturbs accurate chromosome segregation during mitosis. These results establish a previously uncharacterized regulatory mechanism in which TIP60-elicited nucleoporin dynamics promotes chromosome segregation in mitosis.
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Affiliation(s)
- Hameed Akbar
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Jun Cao
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Dongmei Wang
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Xiao Yuan
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | - Manjuan Zhang
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | | | - Xiaoyu Song
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xu Liu
- MOE Key Laboratory for Cellular Dynamics and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China,CAS Center for Excellence in Molecular and Cell Sciences, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei 230027, China
| | | | | | | | - Xing Liu
- Correspondence to: Xing Liu, E-mail:
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9
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Wellard SR, Skinner MW, Zhao X, Shults C, Jordan PW. PLK1 depletion alters homologous recombination and synaptonemal complex disassembly events during mammalian spermatogenesis. Mol Biol Cell 2022; 33:ar37. [PMID: 35274968 PMCID: PMC9282006 DOI: 10.1091/mbc.e21-03-0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 02/25/2022] [Accepted: 03/03/2022] [Indexed: 11/11/2022] Open
Abstract
Homologous recombination (HR) is an essential meiotic process that contributes to the genetic variation of offspring and ensures accurate chromosome segregation. Recombination is facilitated by the formation and repair of programmed DNA double-strand breaks. These DNA breaks are repaired via recombination between maternal and paternal homologous chromosomes and a subset result in the formation of crossovers. HR and crossover formation is facilitated by synapsis of homologous chromosomes by a proteinaceous scaffold structure known as the synaptonemal complex (SC). Recent studies in yeast and worms have indicated that polo-like kinases (PLKs) regulate several events during meiosis, including DNA recombination and SC dynamics. Mammals express four active PLKs (PLK1-4), and our previous work assessing localization and kinase function in mouse spermatocytes suggested that PLK1 coordinates nuclear events during meiotic prophase. Therefore, we conditionally mutated Plk1 in early prophase spermatocytes and assessed stages of HR, crossover formation, and SC processes. Plk1 mutation resulted in increased RPA foci and reduced RAD51/DMC1 foci during zygonema, and an increase of both class I and class II crossover events. Furthermore, the disassembly of SC lateral elements was aberrant. Our results highlight the importance of PLK1 in regulating HR and SC disassembly during spermatogenesis.
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Affiliation(s)
- Stephen R. Wellard
- Biochemistry and Molecular Biology Department, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
| | - Marnie W. Skinner
- Biochemistry and Molecular Biology Department, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
| | - Xueqi Zhao
- Biochemistry and Molecular Biology Department, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
| | - Chris Shults
- Biochemistry and Molecular Biology Department, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
| | - Philip W. Jordan
- Biochemistry and Molecular Biology Department, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
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10
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Barbosa J, Sunkel CE, Conde C. The Role of Mitotic Kinases and the RZZ Complex in Kinetochore-Microtubule Attachments: Doing the Right Link. Front Cell Dev Biol 2022; 10:787294. [PMID: 35155423 PMCID: PMC8832123 DOI: 10.3389/fcell.2022.787294] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/13/2022] [Indexed: 12/31/2022] Open
Abstract
During mitosis, the interaction of kinetochores (KTs) with microtubules (MTs) drives chromosome congression to the spindle equator and supports the segregation of sister chromatids. Faithful genome partition critically relies on the ability of chromosomes to establish and maintain proper amphitelic end-on attachments, a configuration in which sister KTs are connected to robust MT fibers emanating from opposite spindle poles. Because the capture of spindle MTs by KTs is error prone, cells use mechanisms that sense and correct inaccurate KT-MT interactions before committing to segregate sister chromatids in anaphase. If left unresolved, these errors can result in the unequal distribution of chromosomes and lead to aneuploidy, a hallmark of cancer. In this review, we provide an overview of the molecular strategies that monitor the formation and fine-tuning of KT-MT attachments. We describe the complex network of proteins that operates at the KT-MT interface and discuss how AURORA B and PLK1 coordinate several concurrent events so that the stability of KT-MT attachments is precisely modulated throughout mitotic progression. We also outline updated knowledge on how the RZZ complex is regulated to ensure the formation of end-on attachments and the fidelity of mitosis.
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Affiliation(s)
- João Barbosa
- i3S, Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Claudio E. Sunkel
- i3S, Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Carlos Conde
- i3S, Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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11
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Lee HS, Min S, Jung YE, Chae S, Heo J, Lee JH, Kim T, Kang HC, Nakanish M, Cha SS, Cho H. Spatiotemporal coordination of the RSF1-PLK1-Aurora B cascade establishes mitotic signaling platforms. Nat Commun 2021; 12:5931. [PMID: 34635673 PMCID: PMC8505570 DOI: 10.1038/s41467-021-26220-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 09/15/2021] [Indexed: 12/03/2022] Open
Abstract
The chromatin remodeler RSF1 enriched at mitotic centromeres is essential for proper chromosome alignment and segregation and underlying mechanisms remain to be disclosed. We here show that PLK1 recruitment by RSF1 at centromeres creates an activating phosphorylation on Thr236 in the activation loop of Aurora B and this is indispensable for the Aurora B activation. In structural modeling the phosphorylated Thr236 enhances the base catalysis by Asp200 nearby, facilitating the Thr232 autophosphorylation. Accordingly, RSF1-PLK1 is central for Aurora B-mediated microtubule destabilization in error correction. However, under full microtubule-kinetochore attachment RSF1-PLK1 positions at kinetochores, halts activating Aurora B and phosphorylates BubR1, regardless of tension. Spatial movement of RSF1-PLK1 to kinetochores is triggered by Aurora B-mediated phosphorylation of centromeric histone H3 on Ser28. We propose a regulatory RSF1-PLK1 axis that spatiotemporally controls on/off switch on Aurora B. This feedback circuit among RSF1-PLK1-Aurora B may coordinate dynamic microtubule-kinetochore attachment in early mitosis when full tension yet to be generated.
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Affiliation(s)
- Ho-Soo Lee
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea.
| | - Sunwoo Min
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Ye-Eun Jung
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Sunyoung Chae
- Institute of Medical Science, Ajou University School of Medicine, Suwon, 16499, Korea
| | - June Heo
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, 16499, Korea
| | - Jae-Ho Lee
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Institute of Medical Science, Ajou University School of Medicine, Suwon, 16499, Korea
| | - TaeSoo Kim
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea
| | - Ho-Chul Kang
- Department of Physiology, Ajou University School of Medicine, Suwon, Korea
| | - Makoto Nakanish
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, 108-8639, Japan
| | - Sun-Shin Cha
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Hyeseong Cho
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea.
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12
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Gao C, Han Y, Bai L, Wang Y, Xue F. IK: A novel cell mitosis regulator that contributes to carcinogenesis. Cell Biochem Funct 2021; 39:854-859. [PMID: 34250629 DOI: 10.1002/cbf.3660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/26/2021] [Accepted: 06/29/2021] [Indexed: 11/12/2022]
Abstract
Carcinogenesis is characterized by abnormal regulation of cell growth and cell death. IK is a novel cell mitosis regulator that may contribute to carcinogenesis. Previous studies showed that the loss of IK expression resulted in cell mitotic arrest and even cell death. Besides, IK can also inhibit the interferon gamma (IFN-γ)-induced expression of human leukocyte antigen (HLA) class II antigen, which is associated with tumour immune microenvironment. To gain insight into the current research progress regarding IK, we conducted a review and searched the limited literature on IK using PubMed or Web of Science. In this review, we discussed the possible biological functions and mechanisms of IK in cancer and its immune microenvironment. Future perspectives of IK were also mentioned to explore its clinical significance.
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Affiliation(s)
- Chao Gao
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin, China
| | - Yanyan Han
- Department of Pathology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lu Bai
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China.,Department of Gynecology and Obstetrics, Nankai University Affiliated Hospital (Tianjin Fourth Hospital), Tianjin, China
| | - Yingmei Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin, China
| | - Fengxia Xue
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin, China
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13
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Li Y, Lu W, Yang J, Edwards M, Jiang S. Survivin as a biological biomarker for diagnosis and therapy. Expert Opin Biol Ther 2021; 21:1429-1441. [PMID: 33877952 DOI: 10.1080/14712598.2021.1918672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Survivin (SVN) is a member of the inhibitor of apoptosis (IAP) protein family that promotes cellular proliferation and inhibits apoptosis. Overexpression of SVN is associated with autoimmune disease, hyperplasia, and tumors and can be used as a biomarker in these diseases. SVN is widely recognized as a tumor-associated antigen (TAA) and has become an important target for cancer diagnosis and treatment.Areas covered: We reviewed SVN research progress from the PubMed and clinical trials focused on SVN from https://clinicaltrials.gov since 2000 and anticipate future developments in the field. The trials reviewed cover various modalities including diagnostics for early detection and disease progression, small molecule inhibitors of the SVN pathway and immunotherapy targeting SVN epitopes.Expert opinion: The most promising developments involve anti-SVN immunotherapy, with several therapeutic SVN vaccines under evaluation in phase I/II trials. SVN is an important new immune-oncology target that expands the repertoire of individualized combination treatments for cancer.
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Affiliation(s)
- Yuming Li
- Department of Oncology, University of Oxford, Oxford, UK.,School of Life Sciences, Tsinghua University, Beijing, China
| | - Wenshu Lu
- Department of Oncology, University of Oxford, Oxford, UK
| | - Jiarun Yang
- Department of Oncology, University of Oxford, Oxford, UK
| | - Mark Edwards
- Department of Research and Development, Oxford Vacmedix UK Ltd, Oxford, UK
| | - Shisong Jiang
- Department of Oncology, University of Oxford, Oxford, UK.,Department of Research and Development, Oxford Vacmedix UK Ltd, Oxford, UK
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14
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BIRC5 is a prognostic biomarker associated with tumor immune cell infiltration. Sci Rep 2021; 11:390. [PMID: 33431968 PMCID: PMC7801710 DOI: 10.1038/s41598-020-79736-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 12/11/2020] [Indexed: 12/19/2022] Open
Abstract
BIRC5 is an immune-related gene that inhibits apoptosis and promotes cell proliferation. It is highly expressed in most tumors and leads to poor prognosis in cancer patients. This study aimed to analyze the relationship between the expression level of BIRC5 in different tumors and patient prognosis, clinical parameters, and its role in tumor immunity. Genes co-expressed with BIRC5 were analyzed, and functional enrichment analysis was performed. The relationship between BIRC5 expression and the immune and stromal scores of tumors in pan-cancer patients and the infiltration level of 22 tumor-infiltrating lymphocytes (TILs) was analyzed. The correlation of BIRC5 with immune checkpoints was conducted. Functional enrichment analysis showed that genes co-expressed with BIRC5 were significantly associated with the mitotic cell cycle, APC/C-mediated degradation of cell cycle proteins, mitotic metaphase, and anaphase pathways. Besides, the high expression of BIRC5 was significantly correlated with the expression levels of various DNA methyltransferases, indicating that BIRC5 regulates DNA methylation. We also found that BIRC5 was significantly correlated with multiple immune cells infiltrates in a variety of tumors. This study lays the foundation for future research on how BIRC5 modulates tumor immune cells, which may lead to the development of more effective targeted tumor immunotherapies.
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15
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Wanandi SI, Limanto A, Yunita E, Syahrani RA, Louisa M, Wibowo AE, Arumsari S. In silico and in vitro studies on the anti-cancer activity of andrographolide targeting survivin in human breast cancer stem cells. PLoS One 2020; 15:e0240020. [PMID: 33211707 PMCID: PMC7676700 DOI: 10.1371/journal.pone.0240020] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 09/17/2020] [Indexed: 02/05/2023] Open
Abstract
Breast cancer stem cells (BCSCs) express high levels of the anti-apoptotic protein, survivin. This study aimed to discover a natural active compound with anti-cancer properties that targeted survivin in human breast cancer stem cells. From the seven examined compounds, andrographolide was selected as a lead compound through in silico molecular docking with survivin, caspase-9, and caspase-3. We found that the affinity between andrographolide and survivin is higher than that with caspase-9 and caspase-3. Human CD24-/CD44+ BCSCs were treated with andrographolide in vitro for 24 hours. The cytotoxic effect of andrographolide on BCSCs was compared to that on human mesenchymal stem cells (MSCs). The expression of survivin, caspase-9, and caspase-3 mRNA was analyzed using qRT-PCR, while Thr34-phosphorylated survivin and total survivin levels were determined using ELISA and Immunoblotting assay. Annexin-V/PI flow cytometry assays were performed to evaluate the apoptotic activity of andrographolide. Our results demonstrate that the CC50 of andrographolide in BCSCs was 0.32mM, whereas there was no cytotoxic effect in MSCs. Moreover, andrographolide decreased survivin and Thr34-phosphorylated survivin, thus inhibiting survivin activation and increasing survivin mRNA in BCSCs. The apoptotic activity of andrographolide was revealed by the increase of caspase-3 mRNA and protein, as well as the increase in both the early and late phases of apoptosis. In conclusion, andrographolide can be considered an anti-cancer compound that targets BCSCs due to its molecular interactions with survivin, caspase-9, and caspase-3, which induce apoptosis. We suggest that the binding of andrographolide to survivin is a critical aspect of the effect of andrographolide.
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Affiliation(s)
- Septelia Inawati Wanandi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Center for Hypoxia and Oxidative Stress Studies, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Molecular Biology and Proteomic Core Facilities, Indonesian Medical Education and Research Institute, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Agus Limanto
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Elvira Yunita
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Resda Akhra Syahrani
- Molecular Biology and Proteomic Core Facilities, Indonesian Medical Education and Research Institute, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Master Program in Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Melva Louisa
- Department of Pharmacology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Agung Eru Wibowo
- Laboratory for Development of Industrial Agro and Biomedical Technology (LAPTIAB), Agency for the Assessment and Application of Technology (BPPT), Serpong, Tangerang Selatan, Indonesia
| | - Sekar Arumsari
- Molecular Biology and Proteomic Core Facilities, Indonesian Medical Education and Research Institute, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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16
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Li Y, Zhao ZG, Luo Y, Cui H, Wang HY, Jia YF, Gao YT. Dual targeting of Polo-like kinase 1 and baculoviral inhibitor of apoptosis repeat-containing 5 in TP53-mutated hepatocellular carcinoma. World J Gastroenterol 2020; 26:4786-4801. [PMID: 32921957 PMCID: PMC7459198 DOI: 10.3748/wjg.v26.i32.4786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/04/2020] [Accepted: 08/04/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC), often diagnosed at advanced stages without curative therapies, is the fifth most common malignant cancer and the second leading cause of cancer-related mortality. Polo-like kinase 1 (PLK1) is activated in the late G2 phase of the cell cycle and is required for entry to mitosis. Interestingly, PLK1 is overexpressed in many HCC patients and is highly associated with poor clinical outcome. Baculoviral inhibitor of apoptosis repeat-containing 5 (BIRC5) is also highly overexpressed in HCC and plays key roles in this malignancy. AIM To determine the expression patterns of PLK1 and BIRC5, as well as their correlation with p53 mutation status and patient clinical outcome. METHODS The expression patterns of PLK1 and BIRC5, and their correlation with p53 mutation status or patient clinical outcome were analyzed using a TCGA HCC dataset. Cell viability, cell apoptosis, and cell cycle arrest assays were conducted to investigate the efficacy of the PLK1 inhibitors volasertib and GSK461364 and the BIRC5 inhibitor YM155, alone or in combination. The in vivo efficacy of volasertib and YM155, alone or in combination, was assessed in p53-mutated Huh7-derived xenograft models in immune-deficient NSIG mice. RESULTS Our bioinformatics analysis using a TCGA HCC dataset revealed that PLK1 and BIRC5 were overexpressed in the same patient subset and their expression was highly correlated. The overexpression of both PLK1 and BIRC5 was more frequently detected in HCC with p53 mutations. High PLK1 or BIRC5 expression significantly correlated with poor clinical outcome. PLK1 inhibitors (volasertib and GSK461364) or a BIRC5 inhibitor (YM155) selectively targeted Huh7 cells with mutated p53, but not HepG2 cells with wild-type p53. The combination treatment of volasertib and YM155 synergistically inhibited the viability of Huh7 cells via apoptotic pathway. The efficacy of volasertib and YM155, alone or in combination, was validated in vivo in a Huh7-derived xenograft model. CONCLUSION PLK1 and BIRC5 are highly co-expressed in p53-mutated HCC and inhibition of both PLK1 and BIRC5 synergistically compromises the viability of p53-mutated HCC cells in vitro and in vivo.
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Affiliation(s)
- Yan Li
- Department of Hepatology, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
| | - Zhen-Gang Zhao
- Department of Hepatology, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
| | - Yin Luo
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Institute of Hepatobiliary Disease, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
| | - Hao Cui
- Department of Hepatology, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
| | - Hao-Yu Wang
- Department of Hepatology, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
| | - Yan-Fang Jia
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Tianjin Medical University Third Center Clinical College, Tianjin 300170, China
| | - Ying-Tang Gao
- Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Institute of Hepatobiliary Disease, Nankai University Affiliated Third Center Hospital, Tianjin 300170, China
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17
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Liu X, Xu L, Li J, Yao PY, Wang W, Ismail H, Wang H, Liao B, Yang Z, Ward T, Ruan K, Zhang J, Wu Q, He P, Ding X, Wang D, Fu C, Dou Z, Yan F, Wang W, Liu X, Yao X. Mitotic motor CENP-E cooperates with PRC1 in temporal control of central spindle assembly. J Mol Cell Biol 2020; 12:654-665. [PMID: 31174204 PMCID: PMC7683015 DOI: 10.1093/jmcb/mjz051] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/21/2019] [Accepted: 04/30/2019] [Indexed: 01/10/2023] Open
Abstract
Error-free cell division depends on the accurate assembly of the spindle midzone from dynamic spindle microtubules to ensure chromatid segregation during metaphase-anaphase transition. However, the mechanism underlying the key transition from the mitotic spindle to central spindle before anaphase onset remains elusive. Given the prevalence of chromosome instability phenotype in gastric tumorigenesis, we developed a strategy to model context-dependent cell division using a combination of light sheet microscope and 3D gastric organoids. Light sheet microscopic image analyses of 3D organoids showed that CENP-E inhibited cells undergoing aberrant metaphase-anaphase transition and exhibiting chromosome segregation errors during mitosis. High-resolution real-time imaging analyses of 2D cell culture revealed that CENP-E inhibited cells undergoing central spindle splitting and chromosome instability phenotype. Using biotinylated syntelin as an affinity matrix, we found that CENP-E forms a complex with PRC1 in mitotic cells. Chemical inhibition of CENP-E in metaphase by syntelin prevented accurate central spindle assembly by perturbing temporal assembly of PRC1 to the midzone. Thus, CENP-E-mediated PRC1 assembly to the central spindle constitutes a temporal switch to organize dynamic kinetochore microtubules into stable midzone arrays. These findings reveal a previously uncharacterized role of CENP-E in temporal control of central spindle assembly. Since CENP-E is absent from yeast, we reasoned that metazoans evolved an elaborate central spindle organization machinery to ensure accurate sister chromatid segregation during anaphase and cytokinesis.
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Affiliation(s)
- Xu Liu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Leilei Xu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Junying Li
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Phil Y Yao
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Wanjuan Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Hazrat Ismail
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Haowei Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Bryce Liao
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
- Department of Biology, Duke University Durham, NC 27708, USA
| | - Zhihong Yang
- Institute of ProteoGenomics, Beijing 100029, China
| | - Tarsha Ward
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Ke Ruan
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Jianchun Zhang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Quan Wu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Ping He
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Xia Ding
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Dongmei Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Chuanhai Fu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Zhen Dou
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Feng Yan
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Wenwen Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xing Liu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xuebiao Yao
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
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18
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Liu X, Liu X, Wang H, Dou Z, Ruan K, Hill DL, Li L, Shi Y, Yao X. Phase separation drives decision making in cell division. J Biol Chem 2020; 295:13419-13431. [PMID: 32699013 DOI: 10.1074/jbc.rev120.011746] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/22/2020] [Indexed: 12/11/2022] Open
Abstract
Liquid-liquid phase separation (LLPS) of biomolecules drives the formation of subcellular compartments with distinct physicochemical properties. These compartments, free of lipid bilayers and therefore called membraneless organelles, include nucleoli, centrosomes, heterochromatin, and centromeres. These have emerged as a new paradigm to account for subcellular organization and cell fate decisions. Here we summarize recent studies linking LLPS to mitotic spindle, heterochromatin, and centromere assembly and their plasticity controls in the context of the cell division cycle, highlighting a functional role for phase behavior and material properties of proteins assembled onto heterochromatin, centromeres, and central spindles via LLPS. The techniques and tools for visualizing and harnessing membraneless organelle dynamics and plasticity in mitosis are also discussed, as is the potential for these discoveries to promote new research directions for investigating chromosome dynamics, plasticity, and interchromosome interactions in the decision-making process during mitosis.
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Affiliation(s)
- Xing Liu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China; Keck Center for Cellular Dynamics and Organoids Plasticity, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Xu Liu
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China; Keck Center for Cellular Dynamics and Organoids Plasticity, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Haowei Wang
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China
| | - Zhen Dou
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China
| | - Ke Ruan
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China
| | - Donald L Hill
- Comprehensive Cancer Center, University of Alabama, Birmingham, Alabama, USA
| | - Lin Li
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Shanghai, China
| | - Yunyu Shi
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China
| | - Xuebiao Yao
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics and CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China School of Life Science, Hefei, China; Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Center for Physical Sciences at Nanoscale, Hefei, China; Keck Center for Cellular Dynamics and Organoids Plasticity, Morehouse School of Medicine, Atlanta, Georgia, USA; Comprehensive Cancer Center, University of Alabama, Birmingham, Alabama, USA; CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Shanghai, China.
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19
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Yu R, Wu H, Ismail H, Du S, Cao J, Wang J, Ward T, Yang F, Gui P, Ali M, Chu L, Mo F, Wang Q, Chu Y, Zang J, Zhao Y, Ye M, Fang G, Chen PR, Dou Z, Gao X, Wang W, Liu X, Yao X. Methylation of PLK1 by SET7/9 ensures accurate kinetochore-microtubule dynamics. J Mol Cell Biol 2020; 12:462-476. [PMID: 31863092 PMCID: PMC7333475 DOI: 10.1093/jmcb/mjz107] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/05/2019] [Accepted: 11/11/2019] [Indexed: 01/10/2023] Open
Abstract
Faithful segregation of mitotic chromosomes requires bi-orientation of sister chromatids, which relies on the sensing of correct attachments between spindle microtubules and kinetochores. Although the mechanisms underlying PLK1 activation have been extensively studied, the regulatory mechanisms that couple PLK1 activity to accurate chromosome segregation are not well understood. In particular, PLK1 is implicated in stabilizing kinetochore-microtubule attachments, but how kinetochore PLK1 activity is regulated to avoid hyperstabilized kinetochore-microtubules in mitosis remains elusive. Here, we show that kinetochore PLK1 kinase activity is modulated by SET7/9 via lysine methylation during early mitosis. The SET7/9-elicited dimethylation occurs at the Lys191 of PLK1, which tunes down its activity by limiting ATP utilization. Overexpression of the non-methylatable PLK1 mutant or chemical inhibition of SET7/9 methyltransferase activity resulted in mitotic arrest due to destabilized kinetochore-microtubule attachments. These data suggest that kinetochore PLK1 is essential for stable kinetochore-microtubule attachments and methylation by SET7/9 promotes dynamic kinetochore-microtubule attachments for accurate error correction. Our findings define a novel homeostatic regulation at the kinetochore that integrates protein phosphorylation and methylation with accurate chromosome segregation for maintenance of genomic stability.
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Affiliation(s)
- Ruoying Yu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Huihui Wu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Hazrat Ismail
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Shihao Du
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Jun Cao
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Jianyu Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Tarsha Ward
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Fengrui Yang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ping Gui
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Mahboob Ali
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- BUCM-MSM-USTC Joint Program on Global Health Equity, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Lingluo Chu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Harvard Medical School, Boston, MA 02115, USA
| | - Fei Mo
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Harvard Medical School, Boston, MA 02115, USA
| | - Qi Wang
- Dalian Institute for Physical Chemistry, Dalian 116023, China
| | - Youjun Chu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Jianye Zang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Yun Zhao
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China
| | - Mingliang Ye
- Dalian Institute for Physical Chemistry, Dalian 116023, China
| | - Guowei Fang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Peng R Chen
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhen Dou
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xinjiao Gao
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
| | - Wenwen Wang
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xing Liu
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xuebiao Yao
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science, Hefei National Science Center for Physical Sciences at Microscale & University of Science and Technology of China, Hefei 230027, China
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20
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Liao J, Guan Y, Chen W, Shi C, Yao D, Wang F, Lam SM, Shui G, Cao X. ACBD3 is required for FAPP2 transferring glucosylceramide through maintaining the Golgi integrity. J Mol Cell Biol 2020; 11:107-117. [PMID: 29750412 DOI: 10.1093/jmcb/mjy030] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 04/25/2018] [Accepted: 05/07/2018] [Indexed: 11/14/2022] Open
Abstract
Glycosphingolipid (GSL) metabolism is involved in various physiological processes, including all major cell signaling pathways, and its dysregulation is linked to some diseases. The four-phosphate adaptor protein FAPP2-mediated glucosylceramide (GlcCer) transport for complex GSL synthesis has been studied extensively. However, the molecular machinery of FAPP2 as a GlcCer-transferring protein remains poorly defined. Here, we identify a Golgi-resident protein, acyl-coenzyme A binding domain containing 3 (ACBD3), as an interacting partner of FAPP2. We find that ACBD3 knockdown leads to dramatic Golgi fragmentation, which subsequently causes FAPP2 dispersal throughout the cytoplasm and a decreased localization at trans-Golgi network. The further quantitative lipidomic analysis indicates that ACBD3 knockdown triggers abnormal sphingolipid metabolism. Interestingly, the expression of siRNA-resistant full-length ACBD3 can rescue these defects caused by ACBD3 knockdown. These data reveal critical roles for ACBD3 in maintaining the integrity of Golgi morphology and cellular sphingolipid homeostasis and establish the importance of the integrated Golgi complex for the transfer of GlcCer and complex GSL synthesis.
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Affiliation(s)
- Jing Liao
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Yuxiang Guan
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Wei Chen
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Can Shi
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Dongdong Yao
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Fengsong Wang
- School of Life Sciences, Anhui Medical University, Hefei, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Xinwang Cao
- School of Life Sciences, Anhui Medical University, Hefei, China
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21
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Abstract
The conserved serine-threonine kinase, Cdc7, plays a crucial role in initiation of DNA replication by facilitating the assembly of an initiation complex. Cdc7 is expressed at a high level and exhibits significant kinase activity not only during S-phase but also during G2/M-phases. A conserved mitotic kinase, Aurora B, is activated during M-phase by association with INCENP, forming the chromosome passenger complex with Borealin and Survivin. We show that Cdc7 phosphorylates and stimulates Aurora B kinase activity in vitro. We identified threonine-236 as a critical phosphorylation site on Aurora B that could be a target of Cdc7 or could be an autophosphorylation site stimulated by Cdc7-mediated phosphorylation elsewhere. We found that threonines at both 232 (that has been identified as an autophosphorylation site) and 236 are essential for the kinase activity of Aurora B. Cdc7 down regulation or inhibition reduced Aurora B activity in vivo and led to retarded M-phase progression. SAC imposed by paclitaxel was dramatically reversed by Cdc7 inhibition, similar to the effect of Aurora B inhibition under the similar situation. Our data show that Cdc7 contributes to M-phase progression and to spindle assembly checkpoint most likely through Aurora B activation.
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22
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Greenwald EC, Mehta S, Zhang J. Genetically Encoded Fluorescent Biosensors Illuminate the Spatiotemporal Regulation of Signaling Networks. Chem Rev 2018; 118:11707-11794. [PMID: 30550275 PMCID: PMC7462118 DOI: 10.1021/acs.chemrev.8b00333] [Citation(s) in RCA: 302] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cellular signaling networks are the foundation which determines the fate and function of cells as they respond to various cues and stimuli. The discovery of fluorescent proteins over 25 years ago enabled the development of a diverse array of genetically encodable fluorescent biosensors that are capable of measuring the spatiotemporal dynamics of signal transduction pathways in live cells. In an effort to encapsulate the breadth over which fluorescent biosensors have expanded, we endeavored to assemble a comprehensive list of published engineered biosensors, and we discuss many of the molecular designs utilized in their development. Then, we review how the high temporal and spatial resolution afforded by fluorescent biosensors has aided our understanding of the spatiotemporal regulation of signaling networks at the cellular and subcellular level. Finally, we highlight some emerging areas of research in both biosensor design and applications that are on the forefront of biosensor development.
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Affiliation(s)
- Eric C Greenwald
- University of California , San Diego, 9500 Gilman Drive, BRFII , La Jolla , CA 92093-0702 , United States
| | - Sohum Mehta
- University of California , San Diego, 9500 Gilman Drive, BRFII , La Jolla , CA 92093-0702 , United States
| | - Jin Zhang
- University of California , San Diego, 9500 Gilman Drive, BRFII , La Jolla , CA 92093-0702 , United States
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23
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Abstract
Mitosis is controlled by reversible protein phosphorylation involving specific kinases and phosphatases. A handful of major mitotic protein kinases, such as the cyclin B-CDK1 complex, the Aurora kinases, and Polo-like kinase 1 (PLK1), cooperatively regulate distinct mitotic processes. Research has identified proteins and mechanisms that integrate these kinases into signaling cascades that guide essential mitotic events. These findings have important implications for our understanding of the mechanisms of mitotic regulation and may advance the development of novel antimitotic drugs. We review collected evidence that in vertebrates, the Aurora kinases serve as catalytic subunits of distinct complexes formed with the four scaffold proteins Bora, CEP192, INCENP, and TPX2, which we deem "core" Aurora cofactors. These complexes and the Aurora-PLK1 cascades organized by Bora, CEP192, and INCENP control crucial aspects of mitosis and all pathways of spindle assembly. We compare the mechanisms of Aurora activation in relation to the different spindle assembly pathways and draw a functional analogy between the CEP192 complex and the chromosomal passenger complex that may reflect the coevolution of centrosomes, kinetochores, and the actomyosin cleavage apparatus. We also analyze the roles and mechanisms of Aurora-PLK1 signaling in the cell and centrosome cycles and in the DNA damage response.
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Affiliation(s)
- Vladimir Joukov
- N.N. Petrov National Medical Research Center of Oncology, Saint-Petersburg 197758, Russian Federation.
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24
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Cardiac glycoside bufalin blocks cancer cell growth by inhibition of Aurora A and Aurora B activation via PI3K-Akt pathway. Oncotarget 2018; 9:13783-13795. [PMID: 29568394 PMCID: PMC5862615 DOI: 10.18632/oncotarget.24475] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/30/2018] [Indexed: 11/25/2022] Open
Abstract
In our previous study, cardiac glycosides including bufalin, a group of sodium pump (Na+/K+-ATPase) inhibitors widely used to treat heart failure for many years, have been demonstrated to induce a delay of mitotic entry and mitotic arrest in many cancer cells. However, the underlying mechanism remains poorly understood. Here, we reported for the first time that cardiac glycoside bufalin induced mitotic entry delay and prometaphase arrest by inhibition of activation of Aurora A/B. Furthermore, cardiac glycoside bufalin prevented Aurora A recruitment to mitotic centrosomes and Aurora B recruitment to unattached kinetochores. Mechanistically, bufalin and knockdown of sodium pump inhibited PI3K-Akt pathway, which in turn inhibit the activation of Aurora A/B, followed by a delay in mitotic entry and mitotic arrest. These actions were reversed by overexpression of Akt. In addition, ERK, mTOR, and ROS are not involved in bufalin-mediated downregulation of active form of Aurora A/B. Taken together, cardiac glycoside bufalin induces mitotic entry delay and mitotic arrest in cancer cells through inhibition of Aurora A/B activation via PI3K-Akt pathway. Based on this novel finding we could suggest that targeting PI3K-Akt pathway may have therapeutic value for the treatment of cancers associated with sodium pump overexpression.
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25
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Lee M, Kim IS, Park KC, Kim JS, Baek SH, Kim KI. Mitosis-specific phosphorylation of Mis18α by Aurora B kinase enhances kinetochore recruitment of polo-like kinase 1. Oncotarget 2017; 9:1563-1576. [PMID: 29416714 PMCID: PMC5788582 DOI: 10.18632/oncotarget.22707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 10/28/2017] [Indexed: 01/11/2023] Open
Abstract
Mis18α, a component of Mis18 complex comprising of Mis18α, Mis18β, and M18BP1, is known to localize at the centromere from late telophase to early G1 phase and plays a priming role in CENP-A deposition. Although its role in CENP-A deposition is well established, the other function of Mis18α remains unknown. Here, we elucidate a new function of Mis18α that is critical for the proper progression of cell cycle independent of its role in CENP-A deposition. We find that Aurora B kinase phosphorylates Mis18α during mitosis not affecting neither centromere localization of Mis18 complex nor centromere loading of CENP-A. However, the replacement of endogenous Mis18α by phosphorylation-defective mutant causes mitotic defects including micronuclei formation, chromosome misalignment, and chromosomal bridges. Together, our data demonstrate that Aurora B kinase-mediated mitotic phosphorylation of Mis18α is a crucial event for faithful cell cycle progression through the enhanced recruitment of polo-like kinase 1 to the kinetochore.
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Affiliation(s)
- Minkyoung Lee
- Creative Research Initiatives Center for Chromatin Dynamics, Department of Biological Sciences, Seoul National University, Seoul 08826, South Korea
| | - Ik Soo Kim
- Creative Research Initiatives Center for Chromatin Dynamics, Department of Biological Sciences, Seoul National University, Seoul 08826, South Korea
| | - Koog Chan Park
- Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University, Seoul 04310, South Korea
| | - Jong-Seo Kim
- Center for RNA Research, Institute for Basic Science, Department of Biological Sciences, Seoul National University, Seoul 08826, South Korea
| | - Sung Hee Baek
- Creative Research Initiatives Center for Chromatin Dynamics, Department of Biological Sciences, Seoul National University, Seoul 08826, South Korea
| | - Keun Il Kim
- Department of Biological Sciences, Cellular Heterogeneity Research Center, Sookmyung Women's University, Seoul 04310, South Korea
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26
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Severance AL, Latham KE. PLK1 regulates spindle association of phosphorylated eukaryotic translation initiation factor 4E-binding protein and spindle function in mouse oocytes. Am J Physiol Cell Physiol 2017; 313:C501-C515. [PMID: 28794108 PMCID: PMC5792166 DOI: 10.1152/ajpcell.00075.2017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 11/22/2022]
Abstract
Oocyte meiotic spindles are associated with spindle-enriched mRNAs, phosphorylated ribosome protein S6, and phosphorylated variants of the key translational regulator, eukaryotic translation initiation factor 4E-binding protein 1 (eIF4E-BP1), consistent with translational control of localized mRNAs by eIF4E-BP1 in facilitating spindle formation and stability. Using specific kinase inhibitors, we determined which kinases regulate phosphorylation status of eIF4E-BP1 associated with meiotic spindles in mouse oocytes and effects of kinase inhibition on chromosome congression and spindle formation. Neither ataxia telangiectasia-mutated kinase nor mechanistic target of rapamycin inhibition significantly affected phosphorylation status of spindle-associated eIF4E-BP1 at the phosphorylation sites examined. Spindle-associated phospho-eIF4E-BP1, spindle formation, and chromosome congression were strongly disrupted by polo-like kinase I (PLK1) inhibition at both metaphase I (MI) and MII. In addition, direct inhibition of eIF4E-BP1 via 4EGI led to spindle defects at MI, indicating a direct role for eIF4E-BP1 phosphorylation in meiotic spindle formation. PLK1 also regulated microtubule dynamics throughout the ooplasm, indicating likely coordination between spindle dynamics and broader ooplasm cytoskeletal dynamics. Because diverse upstream signaling pathways converge on PLK1, these results implicate PLK1 as a major regulatory nexus coupling endogenous and exogenous signals via eIF4E-BP1 to the regulation of spindle formation and stability.
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Affiliation(s)
- Ashley L Severance
- Reproductive and Developmental Sciences Program, Michigan State University , East Lansing, Michigan
- Genetics Graduate Program, Michigan State University , East Lansing, Michigan
| | - Keith E Latham
- Reproductive and Developmental Sciences Program, Michigan State University , East Lansing, Michigan
- Genetics Graduate Program, Michigan State University , East Lansing, Michigan
- Department of Animal Science, Michigan State University , East Lansing, Michigan ; and
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University , East Lansing, Michigan
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27
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Combes G, Alharbi I, Braga LG, Elowe S. Playing polo during mitosis: PLK1 takes the lead. Oncogene 2017; 36:4819-4827. [PMID: 28436952 DOI: 10.1038/onc.2017.113] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 12/18/2022]
Abstract
Polo-like kinase 1 (PLK1), the prototypical member of the polo-like family of serine/threonine kinases, is a pivotal regulator of mitosis and cytokinesis in eukaryotes. Many layers of regulation have evolved to target PLK1 to different subcellular structures and to its various mitotic substrates in line with its numerous functions during mitosis. Collective work is starting to illuminate an important set of substrates for PLK1: the mitotic kinases that together ensure the fidelity of the cell division process. Amongst these, recent developments argue that PLK1 regulates the activity of the histone kinases Aurora B and Haspin to define centromere identity, of MPS1 to initiate spindle checkpoint signaling, and of BUB1 and its pseudokinase paralog BUBR1 to coordinate spindle checkpoint activation and inactivation. Here, we review the recent work describing the regulation of these kinases by PLK1. We highlight common themes throughout and argue that a major mitotic function of PLK1 is as a master regulator of these key kinases.
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Affiliation(s)
- G Combes
- Program in Molecular and Cellular biology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
- Axe of Reproduction, Mother and Youth Health, CHU de Québec Research Centre, Quebec City, Quebec, Canada
| | - I Alharbi
- Program in Molecular and Cellular biology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
- Axe of Reproduction, Mother and Youth Health, CHU de Québec Research Centre, Quebec City, Quebec, Canada
| | - L G Braga
- Program in Molecular and Cellular biology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
- Axe of Reproduction, Mother and Youth Health, CHU de Québec Research Centre, Quebec City, Quebec, Canada
| | - S Elowe
- Program in Molecular and Cellular biology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
- Axe of Reproduction, Mother and Youth Health, CHU de Québec Research Centre, Quebec City, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
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28
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Yuan X, Yao PY, Jiang J, Zhang Y, Su Z, Yao W, Wang X, Gui P, Mullen M, Henry C, Ward T, Wang W, Brako L, Tian R, Zhao X, Wang F, Cao X, Wang D, Liu X, Ding X, Yao X. MST4 kinase phosphorylates ACAP4 protein to orchestrate apical membrane remodeling during gastric acid secretion. J Biol Chem 2017; 292:16174-16187. [PMID: 28808054 DOI: 10.1074/jbc.m117.808212] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 12/18/2022] Open
Abstract
Digestion in the stomach depends on acidification of the lumen. Histamine-elicited acid secretion is triggered by activation of the PKA cascade, which ultimately results in the insertion of gastric H,K-ATPases into the apical plasma membranes of parietal cells. Our recent study revealed the functional role of PKA-MST4-ezrin signaling axis in histamine-elicited acid secretion. However, it remains uncharacterized how the PKA-MST4-ezrin signaling axis operates the insertion of H,K-ATPases into the apical plasma membranes of gastric parietal cells. Here we show that MST4 phosphorylates ACAP4, an ARF6 GTPase-activating protein, at Thr545 Histamine stimulation activates MST4 and promotes MST4 interaction with ACAP4. ACAP4 physically interacts with MST4 and is a cognate substrate of MST4 during parietal cell activation. The phosphorylation site of ACAP4 by MST4 was mapped to Thr545 by mass spectrometric analyses. Importantly, phosphorylation of Thr545 is essential for acid secretion in parietal cells because either suppression of ACAP4 or overexpression of non-phosphorylatable ACAP4 prevents the apical membrane reorganization and proton pump translocation elicited by histamine stimulation. In addition, persistent overexpression of MST4 phosphorylation-deficient ACAP4 results in inhibition of gastric acid secretion and blockage of tubulovesicle fusion to the apical membranes. Significantly, phosphorylation of Thr545 enables ACAP4 to interact with ezrin. Given the location of Thr545 between the GTPase-activating protein domain and the first ankyrin repeat, we reason that MST4 phosphorylation elicits a conformational change that enables ezrin-ACAP4 interaction. Taken together, these results define a novel molecular mechanism linking the PKA-MST4-ACAP4 signaling cascade to polarized acid secretion in gastric parietal cells.
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Affiliation(s)
- Xiao Yuan
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Phil Y Yao
- the Beijing University of Chinese Medicine, Beijing 100029, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Jiying Jiang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Yin Zhang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Zeqi Su
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Wendy Yao
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Xueying Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Ping Gui
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - McKay Mullen
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Calmour Henry
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Tarsha Ward
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Wenwen Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Larry Brako
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Ruijun Tian
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuannv Zhao
- the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Fengsong Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310.,the Department of Biochemistry, Anhui Medical University, Hefei 230027, China, and
| | - Xinwang Cao
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310.,the Department of Biochemistry, Anhui Medical University, Hefei 230027, China, and
| | - Dongmei Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Xing Liu
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China, .,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Xia Ding
- the Beijing University of Chinese Medicine, Beijing 100029, China,
| | - Xuebiao Yao
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China, .,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
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29
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Cho MG, Ahn JH, Choi HS, Lee JH. DNA double-strand breaks and Aurora B mislocalization induced by exposure of early mitotic cells to H 2O 2 appear to increase chromatin bridges and resultant cytokinesis failure. Free Radic Biol Med 2017; 108:129-145. [PMID: 28343997 DOI: 10.1016/j.freeradbiomed.2017.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 01/14/2023]
Abstract
Aneuploidy, an abnormal number of chromosomes that is a hallmark of cancer cells, can arise from tetraploid/binucleated cells through a failure of cytokinesis. Reactive oxygen species (ROS) have been implicated in various diseases, including cancer. However, the nature and role of ROS in cytokinesis progression and related mechanisms has not been clearly elucidated. Here, using time-lapse analysis of asynchronously growing cells and immunocytochemical analyses of synchronized cells, we found that hydrogen peroxide (H2O2) treatment at early mitosis (primarily prometaphase) significantly induced cytokinesis failure. Cytokinesis failure and the resultant formation of binucleated cells containing nucleoplasmic bridges (NPBs) seemed to be caused by increases in DNA double-strand breaks (DSBs) and subsequent unresolved chromatin bridges. We further found that H2O2 induced mislocalization of Aurora B during mitosis. All of these effects were attenuated by pretreatment with N-acetyl-L-cysteine (NAC) or overexpression of Catalase. Surprisingly, the PARP inhibitor PJ34 also reduced H2O2-induced Aurora B mislocalization and binucleated cell formation. Results of parallel experiments with etoposide, a topoisomerase IIα inhibitor that triggers DNA DSBs, suggested that both DNA DSBs and Aurora B mislocalization contribute to chromatin bridge formation. Aurora B mislocalization also appeared to weaken the "abscission checkpoint". Finally, we showed that KRAS-induced binucleated cell formation appeared to be also H2O2-dependent. In conclusion, we propose that a ROS, mainly H2O2 increases binucleation through unresolved chromatin bridges caused by DNA damage and mislocalization of Aurora B, the latter of which appears to augment the effect of DNA damage on chromatin bridge formation.
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Affiliation(s)
- Min-Guk Cho
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 443-721, South Korea; Genomic Instability Research Center, Ajou University School of Medicine, Suwon 443-721, South Korea; Department of Biomedical Science, Graduate School of Ajou university, Suwon 443-721, South Korea.
| | - Ju-Hyun Ahn
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 443-721, South Korea; Genomic Instability Research Center, Ajou University School of Medicine, Suwon 443-721, South Korea; Department of Biomedical Science, Graduate School of Ajou university, Suwon 443-721, South Korea.
| | - Hee-Song Choi
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 443-721, South Korea; Genomic Instability Research Center, Ajou University School of Medicine, Suwon 443-721, South Korea; Department of Biomedical Science, Graduate School of Ajou university, Suwon 443-721, South Korea.
| | - Jae-Ho Lee
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 443-721, South Korea; Genomic Instability Research Center, Ajou University School of Medicine, Suwon 443-721, South Korea; Department of Biomedical Science, Graduate School of Ajou university, Suwon 443-721, South Korea.
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30
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Aurora-A promotes the establishment of spindle assembly checkpoint by priming the Haspin-Aurora-B feedback loop in late G2 phase. Cell Discov 2017; 3:16049. [PMID: 28101375 PMCID: PMC5223110 DOI: 10.1038/celldisc.2016.49] [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: 06/18/2016] [Accepted: 11/22/2016] [Indexed: 12/11/2022] Open
Abstract
Aurora-A kinase functions mainly in centrosome maturation, separation and spindle formation. It has also been found to be amplified or overexpressed in a range of solid tumors, which is linked with tumor progression and poor prognosis. Importantly, Aurora-A inhibitors are being studied in a number of ongoing clinical trials. However, whether and how Aurora-A has a role in the regulation of the mitotic checkpoint is controversial. Additionally, the function of nuclear-accumulated Aurora-A in late G2 phase is not clear. Here we show that knockout, inhibition or blockade of the nuclear entry of Aurora-A severely decreased the centromere localization of Aurora-B and the phosphorylation of histone H3 threonine 3 (H3T3-ph) mediated by the kinase Haspin in late G2 phase. We further reveal that nuclear-accumulated Aurora-A phosphorylates Haspin at multiple sites at its N-terminus and that this promotes H3T3-ph and the rapid recruitment to the centromere of the chromosomal passenger complex. In addition, Aurora-A facilitates the association of Aurora-B with their common substrates: Haspin and Plk1. Notably, these functions of Aurora-A are mostly independent of Plk1. Thus we demonstrate that, in late G2 and prophase, Aurora-A phosphorylates Haspin to trigger the Haspin-H3T3-ph-Aurora-B positive feedback loop that supports the timely establishment of the chromosomal passenger complex and the mitotic checkpoint before spindle assembly.
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31
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Manic G, Corradi F, Sistigu A, Siteni S, Vitale I. Molecular Regulation of the Spindle Assembly Checkpoint by Kinases and Phosphatases. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2016; 328:105-161. [PMID: 28069132 DOI: 10.1016/bs.ircmb.2016.08.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The spindle assembly checkpoint (SAC) is a surveillance mechanism contributing to the preservation of genomic stability by monitoring the microtubule attachment to, and/or the tension status of, each kinetochore during mitosis. The SAC halts metaphase to anaphase transition in the presence of unattached and/or untensed kinetochore(s) by releasing the mitotic checkpoint complex (MCC) from these improperly-oriented kinetochores to inhibit the anaphase-promoting complex/cyclosome (APC/C). The reversible phosphorylation of a variety of substrates at the kinetochore by antagonistic kinases and phosphatases is one major signaling mechanism for promptly turning on or turning off the SAC. In such a complex network, some kinases act at the apex of the SAC cascade by either generating (monopolar spindle 1, MPS1/TTK and likely polo-like kinase 1, PLK1), or contributing to generate (Aurora kinase B) kinetochore phospho-docking sites for the hierarchical recruitment of the SAC proteins. Aurora kinase B, MPS1 and budding uninhibited by benzimidazoles 1 (BUB1) also promote sister chromatid biorientation by modulating kinetochore microtubule stability. Moreover, MPS1, BUB1, and PLK1 seem to play key roles in APC/C inhibition by mechanisms dependent and/or independent on MCC assembly. The protein phosphatase 1 and 2A (PP1 and PP2A) are recruited to kinetochores to oppose kinase activity. These phosphatases reverse the phosphorylation of kinetochore targets promoting the microtubule attachment stabilization, sister kinetochore biorientation and SAC silencing. The kinase-phosphatase network is crucial as it renders the SAC a dynamic, graded-signaling, high responsive, and robust process thereby ensuring timely anaphase onset and preventing the generation of proneoplastic aneuploidy.
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Affiliation(s)
- G Manic
- Regina Elena National Cancer Institute, Rome, Italy.
| | - F Corradi
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - A Sistigu
- Regina Elena National Cancer Institute, Rome, Italy
| | - S Siteni
- Regina Elena National Cancer Institute, Rome, Italy; Department of Biology, University of Rome "Roma Tre", Rome, Italy
| | - I Vitale
- Regina Elena National Cancer Institute, Rome, Italy; Department of Biology, University of Rome "Tor Vergata", Rome, Italy.
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32
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Duan H, Wang C, Wang M, Gao X, Yan M, Akram S, Peng W, Zou H, Wang D, Zhou J, Chu Y, Dou Z, Barrett G, Green HN, Wang F, Tian R, He P, Wang W, Liu X, Yao X. Phosphorylation of PP1 Regulator Sds22 by PLK1 Ensures Accurate Chromosome Segregation. J Biol Chem 2016; 291:21123-21136. [PMID: 27557660 PMCID: PMC5076521 DOI: 10.1074/jbc.m116.745372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 08/22/2016] [Indexed: 11/06/2022] Open
Abstract
During cell division, accurate chromosome segregation is tightly regulated by Polo-like kinase 1 (PLK1) and opposing activities of Aurora B kinase and protein phosphatase 1 (PP1). However, the regulatory mechanisms underlying the aforementioned hierarchical signaling cascade during mitotic chromosome segregation have remained elusive. Sds22 is a conserved regulator of PP1 activity, but how it regulates PP1 activity in space and time during mitosis remains elusive. Here we show that Sds22 is a novel and cognate substrate of PLK1 in mitosis, and the phosphorylation of Sds22 by PLK1 elicited an inhibition of PP1-mediated dephosphorylation of Aurora B at threonine 232 (Thr232) in a dose-dependent manner. Overexpression of a phosphomimetic mutant of Sds22 causes a dramatic increase in mitotic delay, whereas overexpression of a non-phosphorylatable mutant of Sds22 results in mitotic arrest. Mechanistically, the phosphorylation of Sds22 by PLK1 strengthens the binding of Sds22 to PP1 and inhibits the dephosphorylation of Thr232 of Aurora B to ensure a robust, error-free metaphase-anaphase transition. These findings delineate a conserved signaling hierarchy that orchestrates dynamic protein phosphorylation and dephosphorylation of critical mitotic regulators during chromosome segregation to guard chromosome stability.
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Affiliation(s)
- Hequan Duan
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China, the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310
| | - Chunli Wang
- the National Chromatographic Research and Analysis Center, Chinesse Academy of Sciences, Dalian 116023, China
| | - Ming Wang
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Xinjiao Gao
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Maomao Yan
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Saima Akram
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Wei Peng
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Hanfa Zou
- the National Chromatographic Research and Analysis Center, Chinesse Academy of Sciences, Dalian 116023, China
| | - Dong Wang
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Jiajia Zhou
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Youjun Chu
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China, the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310
| | - Zhen Dou
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China
| | - Gregory Barrett
- the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310
| | - Hadiyah-Nicole Green
- the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310
| | - Fangjun Wang
- the National Chromatographic Research and Analysis Center, Chinesse Academy of Sciences, Dalian 116023, China
| | - Ruijun Tian
- the Guangzhou Women and Children's Medical Center, Guangzhou 510623, China, and the Center of Molecular Proteomics, South University of Science & Technology of China, Shenzhen 518055, China
| | - Ping He
- the Guangzhou Women and Children's Medical Center, Guangzhou 510623, China, and the Center of Molecular Proteomics, South University of Science & Technology of China, Shenzhen 518055, China
| | - Wenwen Wang
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China, the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310,
| | - Xing Liu
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China, the Morehouse School of Medicine and Atlanta Clinical & Translational Science Institute, Atlanta, Georgia 30310,
| | - Xuebiao Yao
- From the Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, MOE Collaborative Innovation Center of Chemistry for Life Sciences, University of Science & Technology of China, Hefei 230027, China,
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33
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Lera RF, Potts GK, Suzuki A, Johnson JM, Salmon ED, Coon JJ, Burkard ME. Decoding Polo-like kinase 1 signaling along the kinetochore-centromere axis. Nat Chem Biol 2016; 12:411-8. [PMID: 27043190 PMCID: PMC4871769 DOI: 10.1038/nchembio.2060] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 02/29/2016] [Indexed: 12/14/2022]
Abstract
Protein kinase signaling along the kinetochore-centromere axis is crucial to assure mitotic fidelity, yet the details of its spatial coordination are obscure. Here, we examined how pools of human Polo-like kinase 1 (Plk1) within this axis control signaling events to elicit mitotic functions. To do this, we restricted active Plk1 to discrete subcompartments within the kinetochore-centromere axis using chemical genetics and decoded functional and phosphoproteomic signatures of each. We observe distinct phosphoproteomic and functional roles, suggesting that Plk1 exists and functions in discrete pools along this axis. Deep within the centromere, Plk1 operates to assure proper chromosome alignment and segregation. Thus, Plk1 at the kinetochore is a conglomerate of an observable bulk pool coupled with additional functional pools below the threshold of microscopic detection or resolution. Although complex, this multiplicity of locales provides an opportunity to decouple functional and phosphoproteomic signatures for a comprehensive understanding of Plk1's kinetochore functions.
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Affiliation(s)
- Robert F. Lera
- Department of Medicine, Hematology/Oncology Division, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
- University of Wisconsin Carbone Cancer Center
| | - Gregory K. Potts
- Department of Chemistry, University of Wisconsin, Madison WI 53706
- Department of Biomolecular Chemistry, University of Wisconsin, Madison WI 53706
| | - Aussie Suzuki
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599
| | - James M. Johnson
- Department of Medicine, Hematology/Oncology Division, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
- University of Wisconsin Carbone Cancer Center
| | - Edward D. Salmon
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599
| | - Joshua J. Coon
- Department of Chemistry, University of Wisconsin, Madison WI 53706
- Genome Center, University of Wisconsin, Madison WI 53706
| | - Mark E. Burkard
- Department of Medicine, Hematology/Oncology Division, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
- University of Wisconsin Carbone Cancer Center
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34
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Acetylation of Aurora B by TIP60 ensures accurate chromosomal segregation. Nat Chem Biol 2016; 12:226-32. [PMID: 26829474 PMCID: PMC4798883 DOI: 10.1038/nchembio.2017] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 12/11/2015] [Indexed: 01/19/2023]
Abstract
Faithful segregation of chromosomes in mammalian cells requires bi-orientation of sister chromatids, which relies on the sensing of correct attachments between spindle microtubules and kinetochores. Although the mechanisms underlying cyclin-dependent kinase 1 (CDK1) activation, which triggers mitotic entry, have been extensively studied, the regulatory mechanisms that couple CDK1-cyclin B activity to chromosome stability are not well understood. Here, we identified a signaling axis in which Aurora B activity is modulated by CDK1-cyclin B via the acetyltransferase TIP60 in human cell division. CDK1-cyclin B phosphorylates Ser90 of TIP60, which elicits TIP60-dependent acetylation of Aurora B and promotes accurate chromosome segregation in mitosis. Mechanistically, TIP60 acetylation of Aurora B at Lys215 protects Aurora B's activation loop from dephosphorylation by the phosphatase PP2A to ensure a robust, error-free metaphase-anaphase transition. These findings delineate a conserved signaling cascade that integrates protein phosphorylation and acetylation with cell cycle progression for maintenance of genomic stability.
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35
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O'Connor A, Maffini S, Rainey MD, Kaczmarczyk A, Gaboriau D, Musacchio A, Santocanale C. Requirement for PLK1 kinase activity in the maintenance of a robust spindle assembly checkpoint. Biol Open 2015; 5:11-9. [PMID: 26685311 PMCID: PMC4728306 DOI: 10.1242/bio.014969] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
During mitotic arrest induced by microtubule targeting drugs, the weakening of the spindle assembly checkpoint (SAC) allows cells to progress through the cell cycle without chromosome segregation occurring. PLK1 kinase plays a major role in mitosis and emerging evidence indicates that PLK1 is also involved in establishing the checkpoint and maintaining SAC signalling. However, mechanistically, the role of PLK1 in the SAC is not fully understood, with several recent reports indicating that it can cooperate with either one of the major checkpoint kinases, Aurora B or MPS1. In this study, we assess the role of PLK1 in SAC maintenance. We find that in nocodazole-arrested U2OS cells, PLK1 activity is continuously required for maintaining Aurora B protein localisation and activity at kinetochores. Consistent with published data we find that upon PLK1 inhibition, phosphoThr3-H3, a marker of Haspin activity, is reduced. Intriguingly, Aurora B inhibition causes PLK1 to relocalise from kinetochores into fewer and much larger foci, possibly due to incomplete recruitment of outer kinetochore proteins. Importantly, PLK1 inhibition, together with partial inhibition of Aurora B, allows efficient SAC override to occur. This phenotype is more pronounced than the phenotype observed by combining the same PLK1 inhibitors with partial MPS1 inhibition. We also find that PLK1 inhibition does not obviously cooperate with Haspin inhibition to promote SAC override. These results indicate that PLK1 is directly involved in maintaining efficient SAC signalling, possibly by cooperating in a positive feedback loop with Aurora B, and that partially redundant mechanisms exist which reinforce the SAC.
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Affiliation(s)
- Aisling O'Connor
- Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Stefano Maffini
- Max-Planck Institute of Molecular Physiology, Department of Mechanistic Cell Biology, Dortmund 44227, Germany
| | - Michael D Rainey
- Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Agnieszka Kaczmarczyk
- Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - David Gaboriau
- Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Andrea Musacchio
- Max-Planck Institute of Molecular Physiology, Department of Mechanistic Cell Biology, Dortmund 44227, Germany Centre for Medical Biotechnology, Faculty of Biology, University Duisburg-Essen, Universitätsstrasse, Essen 45141, Germany
| | - Corrado Santocanale
- Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
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36
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Krenn V, Musacchio A. The Aurora B Kinase in Chromosome Bi-Orientation and Spindle Checkpoint Signaling. Front Oncol 2015; 5:225. [PMID: 26528436 PMCID: PMC4607871 DOI: 10.3389/fonc.2015.00225] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/30/2015] [Indexed: 11/13/2022] Open
Abstract
Aurora B, a member of the Aurora family of serine/threonine protein kinases, is a key player in chromosome segregation. As part of a macromolecular complex known as the chromosome passenger complex, Aurora B concentrates early during mitosis in the proximity of centromeres and kinetochores, the sites of attachment of chromosomes to spindle microtubules. There, it contributes to a number of processes that impart fidelity to cell division, including kinetochore stabilization, kinetochore–microtubule attachment, and the regulation of a surveillance mechanism named the spindle assembly checkpoint. In the regulation of these processes, Aurora B is the fulcrum of a remarkably complex network of interactions that feed back on its localization and activation state. In this review, we discuss the multiple roles of Aurora B during mitosis, focusing in particular on its role at centromeres and kinetochores. Many details of the network of interactions at these locations remain poorly understood, and we focus here on several crucial outstanding questions.
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Affiliation(s)
- Veronica Krenn
- Department of Mechanistic Cell Biology, Max Planck Institute of Molecular Physiology , Dortmund , Germany
| | - Andrea Musacchio
- Department of Mechanistic Cell Biology, Max Planck Institute of Molecular Physiology , Dortmund , Germany ; Faculty of Biology, Centre for Medical Biotechnology, University Duisburg-Essen , Essen , Germany
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37
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Jiang H, Wang W, Zhang Y, Yao WW, Jiang J, Qin B, Yao WY, Liu F, Wu H, Ward TL, Chen CW, Liu L, Ding X, Liu X, Yao X. Cell Polarity Kinase MST4 Cooperates with cAMP-dependent Kinase to Orchestrate Histamine-stimulated Acid Secretion in Gastric Parietal Cells. J Biol Chem 2015; 290:28272-28285. [PMID: 26405038 DOI: 10.1074/jbc.m115.668855] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 01/13/2023] Open
Abstract
The digestive function of the stomach depends on acidification of the gastric lumen. Acid secretion into the lumen is triggered by activation of the PKA cascade, which ultimately results in the insertion of gastric H,K-ATPases into the apical plasma membranes of parietal cells. A coupling protein is ezrin, whose phosphorylation at Ser-66 by PKA is required for parietal cell activation. However, little is known regarding the molecular mechanism(s) by which this signaling pathway operates in gastric acid secretion. Here we show that PKA cooperates with MST4 to orchestrate histamine-elicited acid secretion by phosphorylating ezrin at Ser-66 and Thr-567. Histamine stimulation activates PKA, which phosphorylates MST4 at Thr-178 and then promotes MST4 kinase activity. Interestingly, activated MST4 then phosphorylates ezrin prephosphorylated by PKA. Importantly, MST4 is important for acid secretion in parietal cells because either suppression of MST4 or overexpression of non-phosphorylatable MST4 prevents the apical membrane reorganization and proton pump translocation elicited by histamine stimulation. In addition, overexpressing MST4 phosphorylation-deficient ezrin results in an inhibition of gastric acid secretion. Taken together, these results define a novel molecular mechanism linking the PKA-MST4-ezrin signaling cascade to polarized epithelial secretion in gastric parietal cells.
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Affiliation(s)
- Hao Jiang
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China
| | - Wenwen Wang
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Yin Zhang
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Beijing University of Chinese Medicine, Beijing 100029, China
| | - William W Yao
- Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Jiying Jiang
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China
| | - Bo Qin
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Wendy Y Yao
- Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Fusheng Liu
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Beijing University of Chinese Medicine, Beijing 100029, China; Airforce General Hospital, Beijing 100036, China
| | - Huihui Wu
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Tarsha L Ward
- Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310
| | - Chun Wei Chen
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China
| | - Lifang Liu
- Airforce General Hospital, Beijing 100036, China
| | - Xia Ding
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Beijing University of Chinese Medicine, Beijing 100029, China.
| | - Xing Liu
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,; Molecular Imaging Center, Atlanta Clinical and Translational Science Institute, Atlanta, Georgia 30310.
| | - Xuebiao Yao
- BUCM-USTC Joint Program in Cellular Dynamics and Anhui Key Laboratory for Cellular Dynamics, University of Science and Technology of China, Hefei 230027, China,.
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Lee HS, Park YY, Cho MY, Chae S, Yoo YS, Kwon MH, Lee CW, Cho H. The chromatin remodeller RSF1 is essential for PLK1 deposition and function at mitotic kinetochores. Nat Commun 2015; 6:7904. [PMID: 26259146 PMCID: PMC4918322 DOI: 10.1038/ncomms8904] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 06/22/2015] [Indexed: 01/04/2023] Open
Abstract
Accumulation of PLK1 at kinetochores is essential for chromosome alignment and segregation; however, the mechanism underlying PLK1 recruitment to kinetochores remains unresolved. The chromatin remodeller RSF1 tightly associates with centromere proteins, but its mitotic function is unknown. Here we show that RSF1 localizes at mitotic kinetochores and directly binds PLK1. RSF1 depletion disrupts localization of PLK1 at kinetochores; the C-terminal fragment of RSF1, which can bind PLK1, is sufficient to restore PLK1 localization. Moreover, CDK1 phosphorylates RSF1 at Ser1375, and this phosphorylation is necessary for PLK1 recruitment. Subsequently, PLK1 phosphorylates RSF1 at Ser1359, stabilizing PLK1 deposition. Importantly, RSF1 depletion mimicks the chromosome misalignment phenotype resulting from PLK1 knockdown; these defects are rescued by RSF1 S1375D or RSF1 S1359D but not RSF1 S1375A, showing a functional link between phosphorylation of RSF1 and chromosome alignment. Together, these data show that RSF1 is an essential centromeric component that recruits PLK1 to kinetochores and plays a crucial role in faithful cell division.
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Affiliation(s)
- Ho-Soo Lee
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon 443-380, Korea
| | - Yong-Yea Park
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
| | - Mi-Young Cho
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon 443-380, Korea
| | - Sunyoung Chae
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
| | - Young-Suk Yoo
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon 443-380, Korea
| | - Myung-Hee Kwon
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon 443-380, Korea
- Department of Microbiology, Ajou University School of Medicine, Suwon 443-380, Korea
| | - Chang-Woo Lee
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea
| | - Hyeseong Cho
- Department of Biochemistry, Ajou University School of Medicine, Suwon 443-380, Korea
- Department of Biomedical Sciences, Graduate School of Ajou University, Suwon 443-380, Korea
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Sah NK, Seniya C. Survivin splice variants and their diagnostic significance. Tumour Biol 2015; 36:6623-31. [PMID: 26245993 DOI: 10.1007/s13277-015-3865-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 07/29/2015] [Indexed: 12/12/2022] Open
Abstract
Survivin plays a crucial role in cell division particularly during the development of the fetus, in the onset and progression of most tumors and is found expressed in a few terminally differentiated cells. Altogether, there are ten splice variants of survivin, some of which are not yet satisfactorily characterized. Several isoforms may undergo homo/heterodimerization, particularly with the wild-type survivin to elicit a variety of biological functions. The detection of survivin and its splice variants not only suggests the onset, maintenance, and progression of cancer, but also the stage of certain cancers. Recent studies demonstrate that the presence of survivin in urine and blood samples of patients may suggest urogenital and bladder cancer hematologic malignancies, respectively. The expression of the survivin-3α splice variant is indicative of the onset and progression of breast cancer. Several companies have developed cancer diagnostic kits using survivin for detection of cancer. Some are also engaged in fine-tuning the type and stage-specific diagnosis of cancer based on survivin, its splice variants with and without other markers, such as hyaluronidase. Briefly, survivin and its splice variants hold a great biological significance, particularly in the diagnosis of cancer.
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Affiliation(s)
- Nand K Sah
- Department of Life Sciences (Botany), T. N. B. College, Bhagalpur (T M Bhagalpur University, Bhagalpur), Bhagalpur, 812007, India.
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Dynamic localization of Mps1 kinase to kinetochores is essential for accurate spindle microtubule attachment. Proc Natl Acad Sci U S A 2015; 112:E4546-55. [PMID: 26240331 DOI: 10.1073/pnas.1508791112] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The spindle assembly checkpoint (SAC) is a conserved signaling pathway that monitors faithful chromosome segregation during mitosis. As a core component of SAC, the evolutionarily conserved kinase monopolar spindle 1 (Mps1) has been implicated in regulating chromosome alignment, but the underlying molecular mechanism remains unclear. Our molecular delineation of Mps1 activity in SAC led to discovery of a previously unidentified structural determinant underlying Mps1 function at the kinetochores. Here, we show that Mps1 contains an internal region for kinetochore localization (IRK) adjacent to the tetratricopeptide repeat domain. Importantly, the IRK region determines the kinetochore localization of inactive Mps1, and an accumulation of inactive Mps1 perturbs accurate chromosome alignment and mitotic progression. Mechanistically, the IRK region binds to the nuclear division cycle 80 complex (Ndc80C), and accumulation of inactive Mps1 at the kinetochores prevents a dynamic interaction between Ndc80C and spindle microtubules (MTs), resulting in an aberrant kinetochore attachment. Thus, our results present a previously undefined mechanism by which Mps1 functions in chromosome alignment by orchestrating Ndc80C-MT interactions and highlight the importance of the precise spatiotemporal regulation of Mps1 kinase activity and kinetochore localization in accurate mitotic progression.
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Shao H, Huang Y, Zhang L, Yuan K, Chu Y, Dou Z, Jin C, Garcia-Barrio M, Liu X, Yao X. Spatiotemporal dynamics of Aurora B-PLK1-MCAK signaling axis orchestrates kinetochore bi-orientation and faithful chromosome segregation. Sci Rep 2015; 5:12204. [PMID: 26206521 PMCID: PMC4513279 DOI: 10.1038/srep12204] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 05/13/2015] [Indexed: 12/01/2022] Open
Abstract
Chromosome segregation in mitosis is orchestrated by the dynamic interactions between the kinetochore and spindle microtubules. The microtubule depolymerase mitotic centromere-associated kinesin (MCAK) is a key regulator for an accurate kinetochore-microtubule attachment. However, the regulatory mechanism underlying precise MCAK depolymerase activity control during mitosis remains elusive. Here, we describe a novel pathway involving an Aurora B-PLK1 axis for regulation of MCAK activity in mitosis. Aurora B phosphorylates PLK1 on Thr210 to activate its kinase activity at the kinetochores during mitosis. Aurora B-orchestrated PLK1 kinase activity was examined in real-time mitosis using a fluorescence resonance energy transfer-based reporter and quantitative analysis of native PLK1 substrate phosphorylation. Active PLK1, in turn, phosphorylates MCAK at Ser715 which promotes its microtubule depolymerase activity essential for faithful chromosome segregation. Importantly, inhibition of PLK1 kinase activity or expression of a non-phosphorylatable MCAK mutant prevents correct kinetochore-microtubule attachment, resulting in abnormal anaphase with chromosome bridges. We reason that the Aurora B-PLK1 signaling at the kinetochore orchestrates MCAK activity, which is essential for timely correction of aberrant kinetochore attachment to ensure accurate chromosome segregation during mitosis.
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Affiliation(s)
- Hengyi Shao
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
| | - Yuejia Huang
- Anhui-MSM Joint Research Group for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Liangyu Zhang
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Kai Yuan
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
| | - Youjun Chu
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Zhen Dou
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
- Anhui-MSM Joint Research Group for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
| | - Changjiang Jin
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
| | | | - Xing Liu
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
- Anhui-MSM Joint Research Group for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Xuebiao Yao
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology, University of Science & Technology of China, Hefei 230027, China
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Unruhe B, Schröder E, Wünsch D, Knauer SK. An Old Flame Never Dies: Survivin in Cancer and Cellular Senescence. Gerontology 2015; 62:173-81. [PMID: 26159786 DOI: 10.1159/000432398] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 05/18/2015] [Indexed: 11/19/2022] Open
Abstract
Survivin (BIRC5) is highly expressed in the vast majority of human cancers and is associated with chemotherapy resistance, increased tumor recurrence and shortened patient survival, making it an attractive therapeutic target. Initially identified as an inhibitor of apoptosis protein, it also plays a major role in the regulation of cell division. As such, it acts as a subunit of the chromosomal passenger complex, composed of the mitotic kinase aurora B, borealin and inner centromere protein, and is essential for proper chromosome segregation and cytokinesis. For both biological functions, interaction of survivin's nuclear export signal with the nuclear export receptor chromosome region maintenance 1 is absolutely essential. The timely orchestration of survivin's wide protein interaction repertoire is further modulated by different posttranslational modifications occurring in a cell-cycle-dependent manner. Recent data furthermore indicate additional roles of survivin in the DNA damage response, contributing to therapy resistance, yet the underlying molecular details are still not completely resolved. This also holds true for a potential involvement of survivin in senescence regulation. An age-related accumulation of survivin probably contributes to the apoptosis resistance observed in aged as well as in senescent cells, while it might promote escape from therapy-induced senescence. This review seeks to integrate the current knowledge on survivin's diverse and complex biological functions. By linking the 'old' facts about survivin with recent findings in research areas such as DNA damage response and aging, we want to highlight survivin's crucial role in a variety of cellular processes.
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Affiliation(s)
- Britta Unruhe
- Institute for Molecular Biology II, Centre for Medical Biotechnology (ZMB), University of Duisburg-Essen, Essen, Germany
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Li J, Hong MJ, Chow JP, Man WY, Mak JP, Ma HT, Poon RY. Co-inhibition of polo-like kinase 1 and Aurora kinases promotes mitotic catastrophe. Oncotarget 2015; 6:9327-40. [PMID: 25871386 PMCID: PMC4496220 DOI: 10.18632/oncotarget.3313] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 02/08/2015] [Indexed: 11/25/2022] Open
Abstract
Mitosis is choreographed by a number of protein kinases including polo-like kinases and Aurora kinases. As these kinases are frequently dysregulated in cancers, small-molecule inhibitors have been developed for targeted anticancer therapies. Given that PLK1 and Aurora kinases possess both unique functions as well as co-regulate multiple mitotic events, whether pharmacological inhibition of these kinases together can enhance mitotic catastrophe remains an outstanding issue to be determined. Using concentrations of inhibitors that did not induce severe mitotic defects on their own, we found that both the metaphase arrest and mitotic slippage induced by inhibitors targeting Aurora A and Aurora B (MK-5108 and Barasertib respectively) were enhanced by a PLK1 inhibitor (BI 2536). We found that PLK1 is overexpressed in cells from nasopharyngeal carcinoma, a highly invasive cancer with poor prognosis, in comparison to normal nasopharyngeal epithelial cells. Nasopharyngeal carcinoma cells were more sensitive to BI 2536 as a single agent and co-inhibition with Aurora kinases than normal cells. These observations underscore the mechanism and potential benefits of targeting PLK1 and Aurora kinases to induce mitotic catastrophe in cancer cells.
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Affiliation(s)
- Jingjing Li
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Myung Jin Hong
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Jeremy P.H. Chow
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Wing Yu Man
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Joyce P.Y. Mak
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Hoi Tang Ma
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Randy Y.C. Poon
- Division of Life Science, Center for Cancer Research, and State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
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Chiou SK, Hoa N, Hodges A, Ge L, Jadus MR. Indomethacin promotes apoptosis in gastric cancer cells through concomitant degradation of Survivin and Aurora B kinase proteins. Apoptosis 2015; 19:1378-88. [PMID: 24874838 DOI: 10.1007/s10495-014-1002-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Regular usage of nonsteroidal anti-inflammatory drugs (NSAIDs) is associated with reduced incidence of a variety of cancers. The molecular mechanisms underlying these chemopreventive effects remain poorly understood. This current investigation showed that in gastric cancer cells: (1) Indomethacin treatment enhanced the degradation of chromosomal passenger proteins, Survivin and Aurora B kinase; (2) Indomethacin treatment down-regulated Aurora B kinase activity in a cell cycle-independent fashion; (3) siRNA knockdown of Survivin level promoted Aurora B kinase protein degradation, and vice versa; (4) ectopic overexpression of Survivin blocked reduction of Aurora B kinase level and activity by indomethacin treatment, and vice versa; (5) siRNA knockdown of Aurora B kinase level and AZD1152 inhibition of its activity induced apoptosis, and overexpression of Aurora B kinase inhibited indomethacin-induced apoptosis; (6) indomethacin treatment reduced Aurora B kinase level, coinciding with reduction of Survivin level and induction of apoptosis, in KATO III and HT-29 cells, and in mouse gastric mucosa. A role for Aurora B kinase function in NSAID-induced apoptosis was not previously explored. Thus this report provides better understanding of the molecular mechanisms underlying the anti-cancer effect of NSAIDs by elucidating a significant role for Aurora B kinase in indomethacin-induced apoptosis.
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Affiliation(s)
- Shiun-Kwei Chiou
- Department of Veterans Affairs Medical Center, 5901 E 7th st., Long Beach, CA, 90822-5201, USA,
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Zhang Y, Chen HX, Zhou SY, Wang SX, Zheng K, Xu DD, Liu YT, Wang XY, Wang X, Yan HZ, Zhang L, Liu QY, Chen WQ, Wang YF. Sp1 and c-Myc modulate drug resistance of leukemia stem cells by regulating survivin expression through the ERK-MSK MAPK signaling pathway. Mol Cancer 2015; 14:56. [PMID: 25890196 PMCID: PMC4357193 DOI: 10.1186/s12943-015-0326-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 02/23/2015] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is initiated and maintained by a subset of self-renewing leukemia stem cells (LSCs), which contribute to the progression, recurrence and therapeutic resistance of leukemia. However, the mechanisms underlying the maintenance of LSCs drug resistance have not been fully defined. In this study, we attempted to elucidate the mechanisms of LSCs drug resistance. METHODS We performed reverse phase protein arrays to analyze the expression of anti-apoptotic proteins in the LSC-enriched leukemia cell line KG-1a. Immuno-blotting, cell viability and clinical AML samples were evaluated to verify the micro-assay results. The characteristics and transcriptional regulation of survivin were analyzed with the relative luciferase reporter assay, mutant constructs, chromatin immuno-precipitation (ChIP), quantitative real-time reverse transcription polymerase chain reaction (RT-qPCR), and western blotting. The levels of Sp1, c-Myc, phospho-extracellular signal-regulated kinase (p-ERK), phospho-mitogen and stress-activated protein kinase (p-MSK) were investigated in paired CD34+ and CD34- AML patient samples. RESULTS Survivin was highly over-expressed in CD34 + CD38- KG-1a cells and paired CD34+ AML patients compared with their differentiated counterparts. Functionally, survivin contributes to the drug resistance of LSCs, and Sp1 and c-Myc concurrently regulate levels of survivin transcription. Clinically, Sp1 and c-Myc were significantly up-regulated and positively correlated with survivin in CD34+ AML patients. Moreover, Sp1 and c-Myc were further activated by the ERK/MSK mitogen-activated protein kinase (MAPK) signaling pathway, modulating survivin levels. CONCLUSION Our findings demonstrated that ERK/MSK/Sp1/c-Myc axis functioned as a critical regulator of survivin expression in LSCs, offering a potential new therapeutic strategy for LSCs therapy.
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Affiliation(s)
- Yi Zhang
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
- Institute of Biomedicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Hai-xuan Chen
- College of Medicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Shu-yan Zhou
- Department of Pathological Physiology, Wan-nan Medical College, 241000, Wuhu, P.R China.
| | - Shao-xiang Wang
- College of Medicine, Shenzhen University, 518020, Shenzhen, P.R China.
| | - Kai Zheng
- College of Medicine, Shenzhen University, 518020, Shenzhen, P.R China.
| | - Dan-dan Xu
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
| | - Yu-ting Liu
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
| | - Xiao-yan Wang
- Institute of Biomedicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Xiao Wang
- Institute of Biomedicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Hai-Zhao Yan
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
| | - Li Zhang
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
| | - Qiu-ying Liu
- Institute of Biomedicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Wan-qun Chen
- College of Medicine, Jinan University, 510632, Guangzhou, P.R China.
| | - Yi-fei Wang
- College of Life Science and Technology, Jinan University, 510632, Guangzhou, P.R, China.
- Institute of Biomedicine, Jinan University, 510632, Guangzhou, P.R China.
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Liu X, Song Z, Huo Y, Zhang J, Zhu T, Wang J, Zhao X, Aikhionbare F, Zhang J, Duan H, Wu J, Dou Z, Shi Y, Yao X. Chromatin protein HP1 interacts with the mitotic regulator borealin protein and specifies the centromere localization of the chromosomal passenger complex. J Biol Chem 2015; 289:20638-49. [PMID: 24917673 DOI: 10.1074/jbc.m114.572842] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Accurate mitosis requires the chromosomal passenger protein complex (CPC) containing Aurora B kinase, borealin, INCENP, and survivin, which orchestrates chromosome dynamics. However, the chromatin factors that specify the CPC to the centromere remain elusive. Here we show that borealin interacts directly with heterochromatin protein 1 (HP1) and that this interaction is mediated by an evolutionarily conserved PXVXL motif in the C-terminal borealin with the chromo shadow domain of HP1. This borealin-HP1 interaction recruits the CPC to the centromere and governs an activation of Aurora B kinase judged by phosphorylation of Ser-7 in CENP-A, a substrate of Aurora B. Consistently, modulation of the motif PXVXL leads to defects in CPC centromere targeting and aberrant Aurora B activity. On the other hand, the localization of the CPC in the midzone is independent of the borealin-HP1 interaction, demonstrating the spatial requirement of HP1 in CPC localization to the centromere. These findings reveal a previously unrecognized but direct link between HP1 and CPC localization in the centromere and illustrate the critical role of borealin-HP1 interaction in orchestrating an accurate cell division.
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Raab M, Krämer A, Hehlgans S, Sanhaji M, Kurunci-Csacsko E, Dötsch C, Bug G, Ottmann O, Becker S, Pachl F, Kuster B, Strebhardt K. Mitotic arrest and slippage induced by pharmacological inhibition of Polo-like kinase 1. Mol Oncol 2015; 9:140-54. [PMID: 25169932 PMCID: PMC5528686 DOI: 10.1016/j.molonc.2014.07.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 07/25/2014] [Indexed: 01/22/2023] Open
Abstract
Exposure to drugs that interfere with microtubule dynamics block cell cycle progression at mitosis by prolonged activation of the spindle assembly checkpoint (SAC). Cells can evade mitotic arrest and proceed to interphase without chromosome segregation by a process termed mitotic slippage that involves Cyclin B1 degradation without checkpoint inactivation. Here, we explored the cellular response to small-molecule inhibitors of Polo-like kinase 1 (Plk1), an important regulator of cell division. We found that the clinical Plk1 inhibitors BI 2536 and BI 6727, both unexpectedly, induced a dose-dependent cellular drug response: While mitotic arrest was induced in cancer cell lines and primary non-transformed cells across the entire range of concentrations tested, only high concentrations seemed to promote mitotic slippage. Since this observation contrasts with the effects expected from studies reporting RNAi-mediated Plk1 depletion in cancer cells, we wondered whether both ATP-competitive inhibitors target unknown kinases that are involved in signaling from the spindle assembly checkpoint (SAC) and might contribute to the mitotic slippage. A chemical proteomics approach used to profile the selectivity of both inhibitors revealed that SAC kinases are not targeted directly. Still, the activities of Cdk1/Cyclin B1 and Aurora B, which plays important roles in the error correction of false microtubule-kinetochore attachments and in checkpoint signaling, were shown to be downregulated at high inhibitor concentrations. Our data suggest that the inhibition of Plk1 activity below a certain threshold influences Aurora B activity via reduced phosphorylation of Fox M1 and Survivin leading to diminished levels of Aurora B protein and alteration of its subcellular localization. Within the spectrum of SAC proteins that are degraded during mitotic slippage, the degradation of Cyclin B1 and the downregulation of Aurora B activity by Plk1 inhibition seem to be critical promoters of mitotic slippage. The results indicate that careful dose-finding studies in cancer trials are necessary to limit or even prevent mitotic slippage, which could be associated with improved cancer cell survival.
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Affiliation(s)
- Monika Raab
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Andrea Krämer
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | | | - Mourad Sanhaji
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Elisabeth Kurunci-Csacsko
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Christina Dötsch
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Gesine Bug
- Department of Medicine, Hematology/Oncology, Goethe University, Germany
| | - Oliver Ottmann
- Department of Medicine, Hematology/Oncology, Goethe University, Germany
| | - Sven Becker
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Fiona Pachl
- Technische Universität München, Emil Erlenmeyer Forum 5, 85354 Freising, Germany
| | - Bernhard Kuster
- Technische Universität München, Emil Erlenmeyer Forum 5, 85354 Freising, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Klaus Strebhardt
- Department of Gynecology, School of Medicine, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany.
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48
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Regulation of kinetochore-microtubule attachments through homeostatic control during mitosis. Nat Rev Mol Cell Biol 2014; 16:57-64. [PMID: 25466864 DOI: 10.1038/nrm3916] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Faithful chromosome segregation during mitosis is essential for genome integrity and is mediated by the bi-oriented attachment of replicated chromosomes to spindle microtubules through kinetochores. Errors in kinetochore-microtubule (k-MT) attachment that could cause chromosome mis-segregation are frequent and are corrected by the dynamic turnover of k-MT attachments. Thus, regulating the rate of spindle microtubule attachment and detachment to kinetochores is crucial for mitotic fidelity and is frequently disrupted in cancer cells displaying chromosomal instability. A model based on homeostatic principles involving receptors, a core control network, effectors and feedback control may explain the precise regulation of k-MT attachment stability during mitotic progression to ensure error-free mitosis.
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49
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Yu H, Zhou J, Takahashi H, Yao W, Suzuki Y, Yuan X, Yoshimura SH, Zhang Y, Liu Y, Emmett N, Bond V, Wang D, Ding X, Takeyasu K, Yao X. Spatial control of proton pump H,K-ATPase docking at the apical membrane by phosphorylation-coupled ezrin-syntaxin 3 interaction. J Biol Chem 2014; 289:33333-42. [PMID: 25301939 PMCID: PMC4246090 DOI: 10.1074/jbc.m114.581280] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 10/08/2014] [Indexed: 11/06/2022] Open
Abstract
The digestive function of the stomach depends on acidification of the gastric lumen. Acid secretion into the lumen is triggered by activation of a cAMP-dependent protein kinase (PKA) cascade, which ultimately results in the insertion of gastric H,K-ATPases into the apical plasma membranes of parietal cells. A coupling protein is ezrin whose phosphorylation at Ser-66 by PKA is required for parietal cell activation. However, little is known regarding the molecular mechanism(s) by which ezrin operates in gastric acid secretion. Here we show that phosphorylation of Ser-66 induces a conformational change of ezrin that enables its association with syntaxin 3 (Stx3) and provides a spatial cue for H,K-ATPase trafficking. This conformation-dependent association is specific for Stx3, and the binding interface is mapped to the N-terminal region. Biochemical analyses show that inhibition of ezrin phosphorylation at Ser-66 prevents ezrin-Stx3 association and insertion of H,K-ATPase into the apical plasma membrane of parietal cells. Using atomic force microscopic analyses, our study revealed that phosphorylation of Ser-66 induces unfolding of ezrin molecule to allow Stx3 binding to its N terminus. Given the essential role of Stx3 in polarized secretion, our study presents the first evidence in which phosphorylation-induced conformational rearrangement of the ezrin molecule provides a spatial cue for polarized membrane trafficking in epithelial cells.
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Affiliation(s)
- Huijuan Yu
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027
| | - Jiajia Zhou
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027, Morehouse School of Medicine, Atlanta, Georgia 30310, and
| | - Hirohide Takahashi
- Laboratory of Plasma Membrane, Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - William Yao
- Morehouse School of Medicine, Atlanta, Georgia 30310, and
| | - Yuki Suzuki
- Laboratory of Plasma Membrane, Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Xiao Yuan
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027
| | - Shige H Yoshimura
- Laboratory of Plasma Membrane, Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Yin Zhang
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027, Graduate School, Beijing University of Chinese Medicine, Beijing 100086, China
| | - Ya Liu
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027
| | | | - Vincent Bond
- Morehouse School of Medicine, Atlanta, Georgia 30310, and
| | - Dongmei Wang
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027
| | - Xia Ding
- Graduate School, Beijing University of Chinese Medicine, Beijing 100086, China
| | - Kunio Takeyasu
- Laboratory of Plasma Membrane, Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan,
| | - Xuebiao Yao
- From the Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, University of Science and Technology of China School of Life Science, Hefei, China 230027,
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50
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Xia P, Liu X, Wu B, Zhang S, Song X, Yao PY, Lippincott-Schwartz J, Yao X. Superresolution imaging reveals structural features of EB1 in microtubule plus-end tracking. Mol Biol Cell 2014; 25:4166-73. [PMID: 25355949 PMCID: PMC4263457 DOI: 10.1091/mbc.e14-06-1133] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A method is introduced for optically imaging intracellular protein interactions at nanometer spatial resolution in live cells using photoactivatable complementary fluorescent (PACF) proteins. The PACF approach established here will enable the simultaneous visualization of homo- and heterodimeric interactions at the single live-cell level. Visualization of specific molecules and their interactions in real time and space is essential to delineate how cellular dynamics and the signaling circuit are orchestrated. Spatial regulation of conformational dynamics and structural plasticity of protein interactions is required to rewire signaling circuitry in response to extracellular cues. We introduce a method for optically imaging intracellular protein interactions at nanometer spatial resolution in live cells, using photoactivatable complementary fluorescent (PACF) proteins. Subsets of complementary fluorescent protein molecules were activated, localized, and then bleached; this was followed by the assembly of superresolution images from aggregate position of sum interactive molecules. Using PACF, we obtained precise localization of dynamic microtubule plus-end hub protein EB1 dimers and their distinct distributions at the leading edges and in the cell bodies of migrating cells. We further delineated the structure–function relationship of EB1 by generating EB1-PACF dimers (EB1wt:EB1wt, EB1wt:EB1mt, and EB1mt:EB1mt) and imaging their precise localizations in culture cells. Surprisingly, our analyses revealed critical role of a previously uncharacterized EB1 linker region in tracking microtubule plus ends in live cells. Thus PACF provides a unique approach to delineating spatial dynamics of homo- or heterodimerized proteins at the nanometer scale and establishes a platform to report the precise regulation of protein interactions in space and time in live cells.
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Affiliation(s)
- Peng Xia
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xing Liu
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China Molecular Imaging Center, University of Georgia, Atlanta, Morehouse School of Medicine, Atlanta, GA 30310
| | - Bing Wu
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shuyuan Zhang
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaoyu Song
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Phil Y Yao
- Molecular Imaging Center, University of Georgia, Atlanta, Morehouse School of Medicine, Atlanta, GA 30310
| | | | - Xuebiao Yao
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology and the Center for Integrated Imaging, Hefei National Laboratory for Physical Sciences at the Nanoscale and University of Science and Technology of China, Hefei, Anhui 230026, China
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