1
|
Perez-Bertoldi JM, Zhao Y, Thawani A, Yildiz A, Nogales E. Molecular interplay between HURP and Kif18A in mitotic spindle regulation. RESEARCH SQUARE 2024:rs.3.rs-4249615. [PMID: 38854046 PMCID: PMC11160874 DOI: 10.21203/rs.3.rs-4249615/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
During mitosis, microtubule dynamics are regulated to ensure proper alignment and segregation of chromosomes. The dynamics of kinetochore-attached microtubules are regulated by hepatoma-upregulated protein (HURP) and the mitotic kinesin-8 Kif18A, but the underlying mechanism remains elusive. Using single-molecule imaging in vitro, we demonstrate that Kif18A motility is regulated by HURP. While sparse decoration of HURP activates the motor, higher concentrations hinder processive motility. To shed light on this behavior, we determined the binding mode of HURP to microtubules using Cryo-EM. The structure reveals that one HURP motif spans laterally across β-tubulin, while a second motif binds between adjacent protofilaments. HURP partially overlaps with the microtubule-binding site of the Kif18A motor domain, indicating that excess HURP inhibits Kif18A motility by steric exclusion. We also observed that HURP and Kif18A function together to suppress dynamics of the microtubule plus-end, providing a mechanistic basis for how they collectively serve in spindle length control.
Collapse
Affiliation(s)
| | - Yuanchang Zhao
- Physics Department, University of California, Berkeley, CA, USA
| | - Akanksha Thawani
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | - Ahmet Yildiz
- Biophysics Graduate Group, University of California, Berkeley, CA, USA
- Physics Department, University of California, Berkeley, CA, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Molecular Biophysics and Integrative Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Eva Nogales
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
- Molecular Biophysics and Integrative Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Howard Hughes Medical Institute, University of California, Berkeley, CA, USA
| |
Collapse
|
2
|
Perez-Bertoldi JM, Zhao Y, Thawani A, Yildiz A, Nogales E. Molecular interplay between HURP and Kif18A in mitotic spindle regulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.11.589088. [PMID: 38645125 PMCID: PMC11030443 DOI: 10.1101/2024.04.11.589088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
During mitosis, microtubule dynamics are regulated to ensure proper alignment and segregation of chromosomes. The dynamics of kinetochore-attached microtubules are regulated by hepatoma-upregulated protein (HURP) and the mitotic kinesin-8 Kif18A, but the underlying mechanism remains elusive. Using single-molecule imaging in vitro , we demonstrate that Kif18A motility is regulated by HURP. While sparse decoration of HURP activates the motor, higher concentrations hinder processive motility. To shed light on this behavior, we determined the binding mode of HURP to microtubules using Cryo-EM. The structure reveals that one HURP motif spans laterally across β-tubulin, while a second motif binds between adjacent protofilaments. HURP partially overlaps with the microtubule-binding site of the Kif18A motor domain, indicating that excess HURP inhibits Kif18A motility by steric exclusion. We also observed that HURP and Kif18A function together to suppress dynamics of the microtubule plus-end, providing a mechanistic basis for how they collectively serve in spindle length control.
Collapse
|
3
|
Simerly C, Robertson E, Harrison C, Ward S, George C, Deleon J, Hartnett C, Schatten G. Male meiotic spindle poles are stabilized by TACC3 and cKAP5/chTOG differently from female meiotic or somatic mitotic spindles in mice. Sci Rep 2024; 14:4808. [PMID: 38413710 PMCID: PMC10899211 DOI: 10.1038/s41598-024-55376-z] [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: 12/12/2023] [Accepted: 02/22/2024] [Indexed: 02/29/2024] Open
Abstract
Transforming acidic acid coiled-coil protein 3 (TACC3) and cytoskeleton associated protein 5 (cKAP5; or colonic hepatic tumor overexpressed gene, chTOG) are vital for spindle assembly and stabilization initiated through TACC3 Aurora-A kinase interaction. Here, TACC3 and cKAP5/chTOG localization with monospecific antibodies is investigated in eGFP-centrin-2- expressing mouse meiotic spermatocytes. Both proteins bind spermatocyte spindle poles but neither kinetochore nor interpolar microtubules, unlike in mitotic mouse fibroblasts or female meiotic oocyte spindles. Spermatocytes do not display a liquid-like spindle domain (LISD), although fusing them into maturing oocytes generates LISD-like TACC3 condensates around sperm chromatin but sparse microtubule assembly. Microtubule inhibitors do not reduce TACC3 and cKAP5/chTOG spindle pole binding. MLN 8237 Aurora-A kinase inhibitor removes TACC3, not cKAP5/chTOG, disrupting spindle organization, chromosome alignment, and impacting spindle pole γ-tubulin intensity. The LISD disruptor 1,6-hexanediol abolished TACC3 in spermatocytes, impacting spindle bipolarity and chromosome organization. Cold microtubule disassembly and rescue experiments in the presence of 1,6-hexanediol reinforce the concept that spermatocyte TACC3 spindle pole presence is not required for spindle pole microtubule assembly. Collectively, meiotic spermatocytes without a LISD localize TACC3 and cKAP5/chTOG exclusively at spindle poles to support meiotic spindle pole stabilization during male meiosis, different from either female meiosis or mitosis.
Collapse
Affiliation(s)
- Calvin Simerly
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Emily Robertson
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Caleb Harrison
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Sydney Ward
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Charlize George
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Jasmine Deleon
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Carrie Hartnett
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Gerald Schatten
- Departments of Cell Biology, Ob-Gyn-Repro Sci, and Bioengineering, Pittsburgh Development Center of Magee-Womens Research Institute, University of Pittsburgh Medical Center, 204 Craft Avenue, Pittsburgh, PA, 15213, USA.
| |
Collapse
|
4
|
Feng Y, Li F, Yan J, Guo X, Wang F, Shi H, Du J, Zhang H, Gao Y, Li D, Yao Y, Hu W, Han J, Zhang M, Ding R, Wang X, Huang C, Zhang J. Pan-cancer analysis and experiments with cell lines reveal that the slightly elevated expression of DLGAP5 is involved in clear cell renal cell carcinoma progression. Life Sci 2021; 287:120056. [PMID: 34687756 DOI: 10.1016/j.lfs.2021.120056] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/03/2021] [Accepted: 10/11/2021] [Indexed: 11/30/2022]
Abstract
AIMS Discs large-associated protein 5 (DLGAP5), a kinetochore fibers-binding protein, functions as a oncoprotein in many cancers. However, its expression patterns in pan-cancer including clear cell renal cell carcinoma (ccRCC) are not analyzed. Herein, we aimed to evaluate its expression in more common cancers, especially in ccRCC. MAIN METHODS Data from Genotype-Tissue Expression, The Cancer Genome Atlas, and Tumor Immune Estimation Resource were used to analyze the DLGAP5 expression in normal tissues, cancer cell lines, and cancer tissues, as well as the immune infiltration levels. The analysis results were verified with ccRCC cell lines via RNAi, western blotting, and the cytological analysis. KEY FINDINGS Low DLGAP5 expression in 31 types of normal tissues, the upregulation in 21 cancer cell lines, and the significant elevated expression in 26 types of cancers, were found, Surprisingly, kidney cancer including ccRCC, DLGAP5 exhibited a slightly elevated but statistically significant expression among 26 types of cancers. In addition, elevated DLGAP5 expression was significantly positive correlated with immune infiltration level in ccRCC. The survival probability of some cancers including kidney cancer, clinical TNM stage of ccRCC patients were significantly related to upregulated DLGAP5 expression. The experiments results showed DLGAP5 upregulation in ccRCC tissues and the cell lines, its knockdown inhibited the cells viability and proliferation, and compromised the cells migration and invasion. SIGNIFICANCE Elevated DLGAP5 expression occurred in common cancers. However, its slightly upregulated expression is related with ccRCC progression, it is therefore a prognostic risk factor for ccRCC, but not an independent factor.
Collapse
Affiliation(s)
- Yun Feng
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Fang Li
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, Shaanxi, China
| | - Jing Yan
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Xianli Guo
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Fenghui Wang
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Haiyan Shi
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Juan Du
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Huahua Zhang
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Yi Gao
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Dan Li
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Yan Yao
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Weihong Hu
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Jiaqi Han
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Mengjie Zhang
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Ruxin Ding
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China
| | - Xiaofei Wang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, Shaanxi, China.
| | - Chen Huang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, Shaanxi, China.
| | - Jing Zhang
- Department of Cell Biology and Genetics, Medical College of Yan'an University, Yan'an 716000, Shaanxi Province, China; Yan'an Key Laboratory of Chronic Disease Prevention and Research, Yan'an 716000, Shaanxi Province, China.
| |
Collapse
|
5
|
Lin W, Wang X, Wang Z, Shao F, Yang Y, Cao Z, Feng X, Gao Y, He J. Comprehensive Analysis Uncovers Prognostic and Immunogenic Characteristics of Cellular Senescence for Lung Adenocarcinoma. Front Cell Dev Biol 2021; 9:780461. [PMID: 34869385 PMCID: PMC8636167 DOI: 10.3389/fcell.2021.780461] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 10/27/2021] [Indexed: 01/10/2023] Open
Abstract
Cellular senescence plays a crucial role in tumorigenesis, development and immune modulation in cancers. However, to date, a robust and reliable cellular senescence-related signature and its value in clinical outcomes and immunotherapy response remain unexplored in lung adenocarcinoma (LUAD) patients. Through exploring the expression profiles of 278 cellular senescence-related genes in 936 LUAD patients, a cellular senescence-related signature (SRS) was constructed and validated as an independent prognostic predictor for LUAD patients. Notably, patients with high SRS scores exhibited upregulation of senescence-associated secretory phenotype (SASP) and an immunosuppressive phenotype. Further analysis showed that SRS combined with immune checkpoint expression or TMB served as a good predictor for patients’ clinical outcomes, and patients with low SRS scores might benefit from immunotherapy. Collectively, our findings demonstrated that SRS involved in the regulation of the tumor immune microenvironment through SASP was a robust biomarker for the immunotherapeutic response and prognosis in LUAD.
Collapse
Affiliation(s)
- Weihao Lin
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xin Wang
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhen Wang
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fei Shao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yannan Yang
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zheng Cao
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoli Feng
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yibo Gao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
6
|
Courthéoux T, Reboutier D, Vazeille T, Cremet JY, Benaud C, Vernos I, Prigent C. Microtubule nucleation during central spindle assembly requires NEDD1 phosphorylation on Serine 405 by Aurora A. J Cell Sci 2019; 132:jcs.231118. [DOI: 10.1242/jcs.231118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 04/16/2019] [Indexed: 12/12/2022] Open
Abstract
During mitosis, the cell sequentially constructs two microtubule-based spindles to ensure faithful segregation of chromosomes. A bipolar spindle first pulls apart the sister chromatids, then a central spindle further separates them away. Although the assembly of the first spindle is well described, the assembly of the second remains poorly understood. We report here that the inhibition of Aurora A leads to an absence of the central spindle due to a lack of nucleation of microtubules in the midzone. In the absence of Aurora A, the HURP and NEDD1 proteins that are involved in nucleation of microtubules fail to concentrate in the midzone. HURP is an effector of RanGTP and NEDD1 serves as an anchor for the γTURC. Interestingly, Aurora A already phosphorylates them during assembly of the bipolar spindle. We show here that the expression of a NEDD1 isoform mimicking Aurora A phosphorylation is sufficient to restore microtubule nucleation in the midzone in a context of Aurora A inhibition. These results reveal a new control mechanism of nucleation of microtubules by Aurora A during assembly of the central spindle.
Collapse
Affiliation(s)
- Thibault Courthéoux
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
| | - David Reboutier
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
| | - Thibaut Vazeille
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Jean-Yves Cremet
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
| | - Christelle Benaud
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
| | - Isabelle Vernos
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Claude Prigent
- Univ. Rennes, CNRS, Institut de Génétique et de Développement de Rennes (IGDR), UMR6290, Equipe labellisée Ligue 2014, F35000 Rennes, France
| |
Collapse
|