1
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Mahanty S, Bergam P, Belapurkar V, Eluvathingal L, Gupta N, Goud B, Nair D, Raposo G, Setty SRG. Biogenesis of specialized lysosomes in differentiated keratinocytes relies on close apposition with the Golgi apparatus. Cell Death Dis 2024; 15:496. [PMID: 38992005 PMCID: PMC11239851 DOI: 10.1038/s41419-024-06710-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 07/13/2024]
Abstract
Intracellular organelles support cellular physiology in diverse conditions. In the skin, epidermal keratinocytes undergo differentiation with gradual changes in cellular physiology, accompanying remodeling of lysosomes and the Golgi apparatus. However, it was not known whether changes in Golgi and lysosome morphology and their redistribution were linked. Here, we show that disassembled Golgi is distributed in close physical apposition to lysosomes in differentiated keratinocytes. This atypical localization requires the Golgi tethering protein GRASP65, which is associated with both the Golgi and lysosome membranes. Depletion of GRASP65 results in the loss of Golgi-lysosome apposition and the malformation of lysosomes, defined by their aberrant morphology, size, and function. Surprisingly, a trans-Golgi enzyme and secretory Golgi cargoes are extensively localized to the lysosome lumen and secreted to the cell surface, contributing to total protein secretion of differentiated keratinocytes but not in proliferative precursors, indicating that lysosomes acquire specialization during differentiation. We further demonstrate that the secretory function of the Golgi apparatus is critical to maintain keratinocyte lysosomes. Our study uncovers a novel form of Golgi-lysosome cross-talk and its role in maintaining specialized secretory lysosomes in differentiated keratinocytes.
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Affiliation(s)
- Sarmistha Mahanty
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, 560012, India.
| | - Ptissam Bergam
- Institut Curie, PSL Research University, CNRS, UMR 144, Structure and Membrane Compartments, F-75005, Paris, France
| | - Vivek Belapurkar
- Centre for Neuroscience, Indian Institute of Science, Bangalore, 560012, India
| | | | - Nikita Gupta
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, 560012, India
| | - Bruno Goud
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France
| | - Deepak Nair
- Centre for Neuroscience, Indian Institute of Science, Bangalore, 560012, India
| | - Graça Raposo
- Institut Curie, PSL Research University, CNRS, UMR 144, Structure and Membrane Compartments, F-75005, Paris, France
| | - Subba Rao Gangi Setty
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, 560012, India.
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2
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Mascanzoni F, Ayala I, Iannitti R, Luini A, Colanzi A. The Golgi checkpoint: Golgi unlinking during G2 is necessary for spindle formation and cytokinesis. Life Sci Alliance 2024; 7:e202302469. [PMID: 38479814 PMCID: PMC10941482 DOI: 10.26508/lsa.202302469] [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: 11/03/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/17/2024] Open
Abstract
Entry into mitosis requires not only correct DNA replication but also extensive cell reorganization, including the separation of the Golgi ribbon into isolated stacks. To understand the significance of pre-mitotic Golgi reorganization, we devised a strategy to first block Golgi segregation, with the consequent G2-arrest, and then force entry into mitosis. We found that the cells forced to enter mitosis with an intact Golgi ribbon showed remarkable cell division defects, including spindle multipolarity and binucleation. The spindle defects were caused by reduced levels at the centrosome of the kinase Aurora-A, a pivotal spindle formation regulator controlled by Golgi segregation. Overexpression of Aurora-A rescued spindle formation, indicating a crucial role of the Golgi-dependent recruitment of Aurora-A at the centrosome. Thus, our results reveal that alterations of the pre-mitotic Golgi segregation in G2 have profound consequences on the fidelity of later mitotic processes and represent potential risk factors for cell transformation and cancer development.
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Affiliation(s)
- Fabiola Mascanzoni
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
| | - Inmaculada Ayala
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
| | - Roberta Iannitti
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
| | - Alberto Luini
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
| | - Antonino Colanzi
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
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3
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Benvenuto G, Leone S, Astoricchio E, Bormke S, Jasek S, D'Aniello E, Kittelmann M, McDonald K, Hartenstein V, Baena V, Escrivà H, Bertrand S, Schierwater B, Burkhardt P, Ruiz-Trillo I, Jékely G, Ullrich-Lüter J, Lüter C, D'Aniello S, Arnone MI, Ferraro F. Evolution of the ribbon-like organization of the Golgi apparatus in animal cells. Cell Rep 2024; 43:113791. [PMID: 38428420 DOI: 10.1016/j.celrep.2024.113791] [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: 05/11/2023] [Revised: 10/31/2023] [Accepted: 01/29/2024] [Indexed: 03/03/2024] Open
Abstract
The "ribbon," a structural arrangement in which Golgi stacks connect to each other, is considered to be restricted to vertebrate cells. Although ribbon disruption is linked to various human pathologies, its functional role in cellular processes remains unclear. In this study, we investigate the evolutionary origin of the Golgi ribbon. We observe a ribbon-like architecture in the cells of several metazoan taxa suggesting its early emergence in animal evolution predating the appearance of vertebrates. Supported by AlphaFold2 modeling, we propose that the evolution of Golgi reassembly and stacking protein (GRASP) binding by golgin tethers may have driven the joining of Golgi stacks resulting in the ribbon-like configuration. Additionally, we find that Golgi ribbon assembly is a shared developmental feature of deuterostomes, implying a role in embryogenesis. Overall, our study points to the functional significance of the Golgi ribbon beyond vertebrates and underscores the need for further investigations to unravel its elusive biological roles.
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Affiliation(s)
- Giovanna Benvenuto
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | - Serena Leone
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | - Emanuele Astoricchio
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | | | - Sanja Jasek
- Living Systems Institute, University of Exeter, Exeter, UK; Heidelberg University, Centre for Organismal Studies (COS), Heidelberg, Germany
| | - Enrico D'Aniello
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | - Maike Kittelmann
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Kent McDonald
- Electron Microscope Lab, University of California Berkeley, Berkeley, CA, USA
| | - Volker Hartenstein
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Valentina Baena
- Department of Cell Biology, UConn Health, Farmington, CT, USA
| | - Héctor Escrivà
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, BIOM, Banyuls-sur-Mer, France
| | - Stephanie Bertrand
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, BIOM, Banyuls-sur-Mer, France
| | - Bernd Schierwater
- Institute of Ecology and Evolution, Hannover University of Veterinary Medicine Foundation, Hannover, Germany
| | | | - Iñaki Ruiz-Trillo
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta, Barcelona, Spain; ICREA, Barcelona, Spain
| | - Gáspár Jékely
- Living Systems Institute, University of Exeter, Exeter, UK; Heidelberg University, Centre for Organismal Studies (COS), Heidelberg, Germany
| | | | | | - Salvatore D'Aniello
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | - Maria Ina Arnone
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy
| | - Francesco Ferraro
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn (SZN), Naples, Italy.
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4
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Zhao SS, Qian Q, Chen XX, Lu Q, Xing G, Qiao S, Li R, Zhang G. Porcine reproductive and respiratory syndrome virus triggers Golgi apparatus fragmentation-mediated autophagy to facilitate viral self-replication. J Virol 2024; 98:e0184223. [PMID: 38179942 PMCID: PMC10878038 DOI: 10.1128/jvi.01842-23] [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: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024] Open
Abstract
Macroautophagy/autophagy is a cellular degradation and recycling process that maintains the homeostasis of organisms. A growing number of studies have reported that autophagy participates in infection by a variety of viruses. Porcine reproductive and respiratory syndrome virus (PRRSV) causes severe financial losses to the global swine industry. Although much research has shown that PRRSV triggers autophagy for its own benefits, the exact molecular mechanisms involved in PRRSV-triggered autophagy remain to be fully elucidated. In the current study, we demonstrated that PRRSV infection significantly induced Golgi apparatus (GA) fragmentation, which promoted autophagy to facilitate viral self-replication. Mechanistically, PRRSV nonstructural protein 2 was identified to interact with and degrade the Golgi reassembly and stacking protein 65 dependent on its papain-like cysteine protease 2 activity, resulting in GA fragmentation. Upon GA fragmentation, GA-resident Ras-like protein in brain 2 was disassociated from Golgi matrix protein 130 and subsequently bound to unc-51 like autophagy activating kinase 1 (ULK1), which enhanced phosphorylation of ULK1 and promoted autophagy. Taken together, all these results expand the knowledge of PRRSV-triggered autophagy as well as PRRSV pathogenesis to support novel potential avenues for prevention and control of the virus. More importantly, these results provide the detailed mechanism of GA fragmentation-mediated autophagy, deepening the understanding of autophagic processes.IMPORTANCEPorcine reproductive and respiratory syndrome virus (PRRSV) infection results in a serious swine disease affecting pig farming worldwide. Despite that numerous studies have shown that PRRSV triggers autophagy for its self-replication, how PRRSV induces autophagy is incompletely understood. Here, we identify that PRRSV Nsp2 degrades GRASP65 to induce GA fragmentation, which dissociates RAB2 from GM130 and activates RAB2-ULK1-mediated autophagy to enhance viral replication. This work expands our understanding of PRRSV-induced autophagy and PRRSV replication, which is beneficial for anti-viral drug development.
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Affiliation(s)
- Shuang-shuang Zhao
- College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Qisheng Qian
- College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Xin-xin Chen
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Qingxia Lu
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Guangxu Xing
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Songlin Qiao
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Rui Li
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Gaiping Zhang
- College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
- Longhu Modern Immunology Laboratory, Zhengzhou, Henan, China
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5
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Chiu SC, Yang XT, Wei TYW, Liao YTA, Chen JMM, Kuo YC, Liu CCJ, Cheng CY, Huang YTJ, Huang YRJ, Wu HLJ, Wan CX, Tsai JR, Yu CTR. The crescent-like Golgi ribbon is shaped by the Ajuba/PRMT5/Aurora-A complex-modified HURP. Cell Commun Signal 2023; 21:156. [PMID: 37370099 DOI: 10.1186/s12964-023-01167-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/14/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Golgi apparatus (GA) is assembled as a crescent-like ribbon in mammalian cells under immunofluorescence microscope without knowing the shaping mechanisms. It is estimated that roughly 1/5 of the genes encoding kinases or phosphatases in human genome participate in the assembly of Golgi ribbon, reflecting protein modifications play major roles in building Golgi ribbon. METHODS To explore how Golgi ribbon is shaped as a crescent-like structure under the guidance of protein modifications, we identified a protein complex containing the scaffold proteins Ajuba, two known GA regulators including the protein kinase Aurora-A and the protein arginine methyltransferase PRMT5, and the common substrate of Aurora-A and PRMT5, HURP. Mutual modifications and activation of PRMT5 and Aurora-A in the complex leads to methylation and in turn phosphorylation of HURP, thereby producing HURP p725. The HURP p725 localizes to GA vicinity and its distribution pattern looks like GA morphology. Correlation study of the HURP p725 statuses and GA structure, site-directed mutagenesis and knockdown-rescue experiments were employed to identify the modified HURP as a key regulator assembling GA as a crescent ribbon. RESULTS The cells containing no or extended distribution of HURP p725 have dispersed GA membranes or longer GA. Knockdown of HURP fragmentized GA and HURP wild type could, while its phosphorylation deficiency mutant 725A could not, restore crescent Golgi ribbon in HURP depleted cells, collectively indicating a crescent GA-constructing activity of HURP p725. HURP p725 is transported, by GA membrane-associated ARF1, Dynein and its cargo adaptor Golgin-160, to cell center where HURP p725 forms crescent fibers, binds and stabilizes Golgi assembly factors (GAFs) including TRIP11, GRASP65 and GM130, thereby dictating the formation of crescent Golgi ribbon at nuclear periphery. CONCLUSIONS The Ajuba/PRMT5/Aurora-A complex integrates the signals of protein methylation and phosphorylation to HURP, and the HURP p725 organizes GA by stabilizing and recruiting GAFs to its crescent-like structure, therefore shaping GA as a crescent ribbon. Therefore, the HURP p725 fiber serves a template to construct GA according to its shape. Video Abstract.
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Affiliation(s)
- Shao-Chih Chiu
- Department of Medical Research, Translational Cell Therapy Center, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Xin-Ting Yang
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Tong-You Wade Wei
- Graduate Institute of Biomedicine and Biomedical Technology, National Chi Nan University, Nantou, Taiwan
- Department of Medicine, University of California, San Diego, CA, USA
| | - Yu-Ting Amber Liao
- Department of Medical Research, Translational Cell Therapy Center, China Medical University Hospital, Taichung, Taiwan
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Jo-Mei Maureen Chen
- Department of Medical Research, Translational Cell Therapy Center, China Medical University Hospital, Taichung, Taiwan
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Yi-Chun Kuo
- Graduate Institute of Biomedicine and Biomedical Technology, National Chi Nan University, Nantou, Taiwan
| | - Chun-Chih Jared Liu
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Chiao-Yun Cheng
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Yu-Ting Jenny Huang
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | | | - He-Lian Joe Wu
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Chang-Xin Wan
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan
| | - Jia-Rung Tsai
- Division of Hematology/Medical Oncology, Department of Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chang-Tze Ricky Yu
- Department of Applied Chemistry, National Chi-Nan University, Nantou, Taiwan.
- Graduate Institute of Biomedicine and Biomedical Technology, National Chi Nan University, Nantou, Taiwan.
- Present Address: Department of Applied Chemistry, National Chi Nan University, No. 1, University Rd. Puli, Nantou, 545, Taiwan.
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6
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Dell'Amico C, Angulo Salavarria MM, Takeo Y, Saotome I, Dell'Anno MT, Galimberti M, Pellegrino E, Cattaneo E, Louvi A, Onorati M. Microcephaly-associated protein WDR62 shuttles from the Golgi apparatus to the spindle poles in human neural progenitors. eLife 2023; 12:e81716. [PMID: 37272619 PMCID: PMC10241521 DOI: 10.7554/elife.81716] [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: 07/08/2022] [Accepted: 04/17/2023] [Indexed: 06/06/2023] Open
Abstract
WDR62 is a spindle pole-associated scaffold protein with pleiotropic functions. Recessive mutations in WDR62 cause structural brain abnormalities and account for the second most common cause of autosomal recessive primary microcephaly (MCPH), indicating WDR62 as a critical hub for human brain development. Here, we investigated WDR62 function in corticogenesis through the analysis of a C-terminal truncating mutation (D955AfsX112). Using induced Pluripotent Stem Cells (iPSCs) obtained from a patient and his unaffected parent, as well as isogenic corrected lines, we generated 2D and 3D models of human neurodevelopment, including neuroepithelial stem cells, cerebro-cortical progenitors, terminally differentiated neurons, and cerebral organoids. We report that WDR62 localizes to the Golgi apparatus during interphase in cultured cells and human fetal brain tissue, and translocates to the mitotic spindle poles in a microtubule-dependent manner. Moreover, we demonstrate that WDR62 dysfunction impairs mitotic progression and results in alterations of the neurogenic trajectories of iPSC neuroderivatives. In summary, impairment of WDR62 localization and function results in severe neurodevelopmental abnormalities, thus delineating new mechanisms in the etiology of MCPH.
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Affiliation(s)
- Claudia Dell'Amico
- Department of Biology, Unit of Cell and Developmental Biology, University of PisaPisaItaly
| | | | - Yutaka Takeo
- Departments of Neurosurgery and Neuroscience, Yale School of MedicineNew HavenUnited States
| | - Ichiko Saotome
- Departments of Neurosurgery and Neuroscience, Yale School of MedicineNew HavenUnited States
| | | | - Maura Galimberti
- Dipartimento di Bioscienze, Università degli Studi di MilanoMilanItaly
- INGM, Istituto Nazionale Genetica MolecolareMilanItaly
| | - Enrica Pellegrino
- Department of Biology, Unit of Cell and Developmental Biology, University of PisaPisaItaly
- Host-Pathogen Interactions in Tuberculosis Laboratory, The Francis Crick InstituteLondonUnited Kingdom
| | - Elena Cattaneo
- Dipartimento di Bioscienze, Università degli Studi di MilanoMilanItaly
- INGM, Istituto Nazionale Genetica MolecolareMilanItaly
| | - Angeliki Louvi
- Departments of Neurosurgery and Neuroscience, Yale School of MedicineNew HavenUnited States
| | - Marco Onorati
- Department of Biology, Unit of Cell and Developmental Biology, University of PisaPisaItaly
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7
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González-Fuente M, Üstün S. ATG8 keeps Golgi in shape after the heat. NATURE PLANTS 2023; 9:685-686. [PMID: 37160997 DOI: 10.1038/s41477-023-01414-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Affiliation(s)
| | - Suayib Üstün
- Faculty of Biology and Biotechnology, Ruhr-University of Bochum, Bochum, Germany.
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8
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Zhou J, Ma J, Yang C, Zhu X, Li J, Zheng X, Li X, Chen S, Feng L, Wang P, Ho MI, Ma W, Liao J, Li F, Wang C, Zhuang X, Jiang L, Kang BH, Gao C. A non-canonical role of ATG8 in Golgi recovery from heat stress in plants. NATURE PLANTS 2023; 9:749-765. [PMID: 37081290 DOI: 10.1038/s41477-023-01398-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 03/22/2023] [Indexed: 05/03/2023]
Abstract
Above-optimal growth temperatures, usually referred to as heat stress (HS), pose a challenge to organisms' survival as they interfere with essential physiological functions and disrupt cellular organization. Previous studies have elucidated the complex transcriptional regulatory networks involved in plant HS responses, but the mechanisms of organellar remodelling and homeostasis during plant HS adaptations remain elusive. Here we report a non-canonical function of ATG8 in regulating the restoration of plant Golgi damaged by HS. Short-term acute HS causes vacuolation of the Golgi apparatus and translocation of ATG8 to the dilated Golgi membrane. The inactivation of the ATG conjugation system, but not of the upstream autophagic initiators, abolishes the targeting of ATG8 to the swollen Golgi, causing a delay in Golgi recovery after HS. Using TurboID-based proximity labelling, we identified CLATHRIN LIGHT CHAIN 2 (CLC2) as an interacting partner of ATG8 via the AIM-LDS interface. CLC2 is recruited to the cisternal membrane by ATG8 to facilitate Golgi reassembly. Collectively, our study reveals a hitherto unanticipated process of Golgi stack recovery from HS in plant cells and uncovers a previously unknown mechanism of organelle resilience involving ATG8.
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Affiliation(s)
- Jun Zhou
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China.
| | - Juncai Ma
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Chao Yang
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Xiu Zhu
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Jing Li
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Xuanang Zheng
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Xibao Li
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Siyu Chen
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Lei Feng
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Pengfei Wang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Man Ip Ho
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Wenlong Ma
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Jun Liao
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Faqiang Li
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Chao Wang
- College of Life Sciences, Shaoxing University, Shaoxing, China
| | - Xiaohong Zhuang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Liwen Jiang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China
| | - Byung-Ho Kang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Hong Kong, China.
| | - Caiji Gao
- MOE Key Laboratory & Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China.
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9
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Wortzel I, Porat Z. Quantifying Golgi Apparatus Fragmentation Using Imaging Flow Cytometry. Methods Mol Biol 2023; 2635:173-184. [PMID: 37074663 DOI: 10.1007/978-1-0716-3020-4_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
Unlike the common conception of the Golgi apparatus as a static organelle, it is, in fact, a dynamic structure, as well as a sensitive sensor for the cellular status. In response to various stimuli, the intact Golgi structure undergoes fragmentation. This fragmentation can yield either partial fragmentation, resulting in several separated chunks, or complete vesiculation of the organelle. These distinct morphologies form the basis of several methods for the quantification of the Golgi status. In this chapter, we describe our imaging flow cytometry-based method for quantifying changes in the Golgi architecture. This method has all the benefits of imaging flow cytometry-namely, it is rapid, high-throughput, and robust-while affording easy implementation and analysis capabilities.
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Affiliation(s)
- Inbal Wortzel
- Children's Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children's Health, Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Ziv Porat
- Flow Cytometry Unit, Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel.
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10
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Ayala I, Colanzi A. In Vitro Methods to Investigate the Disassembly of the Golgi Ribbon During the G2-M Transition of the Cell Cycle. Methods Mol Biol 2022; 2557:333-347. [PMID: 36512225 DOI: 10.1007/978-1-0716-2639-9_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Golgi complex is the central hub of the secretory pathway. In mammalian cells, it is formed by stacks of flattened cisternae organized in a continuous membrane system, the Golgi ribbon, located near the centrosome. During G2, the Golgi ribbon is disassembled into isolated stacks that, at the onset of mitosis, are further fragmented into small tubular-vesicular clusters that disperse throughout the cytoplasm. Here, we describe a set of methods to study the Golgi complex in different phases of the cell cycle, drawing attention to reproducing the mitotic Golgi fragmentation to gain knowledge and acquire the skills to study the mechanisms that regulate mitotic Golgi reorganization as well as its biological significance. The investigations based on these assays have been instrumental in understanding that Golgi disassembly is not only a consequence of mitosis but is also required for mitotic entry and cell division.
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Affiliation(s)
- Inmaculada Ayala
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy.
| | - Antonino Colanzi
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), Naples, Italy.
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Ayala I, Colanzi A. Structural Organization and Function of the Golgi Ribbon During Cell Division. Front Cell Dev Biol 2022; 10:925228. [PMID: 35813197 PMCID: PMC9263219 DOI: 10.3389/fcell.2022.925228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022] Open
Abstract
The Golgi complex has a central role in the secretory traffic. In vertebrate cells it is generally organized in polarized stacks of cisternae that are laterally connected by membranous tubules, forming a structure known as Golgi ribbon. The steady state ribbon arrangement results from a dynamic equilibrium between formation and cleavage of the membrane tubules connecting the stacks. This balance is of great physiological relevance as the unlinking of the ribbon during G2 is required for mitotic entry. A block of this process induces a potent G2 arrest of the cell cycle, indicating that a mitotic “Golgi checkpoint” controls the correct pre-mitotic segregation of the Golgi ribbon. Then, after mitosis onset, the Golgi stacks undergo an extensive disassembly, which is necessary for proper spindle formation. Notably, several Golgi-associated proteins acquire new roles in spindle formation and mitotic progression during mitosis. Here we summarize the current knowledge about the basic principle of the Golgi architecture and its functional relationship with cell division to highlight crucial aspects that need to be addressed to help us understand the physiological significance of the ribbon and the pathological implications of alterations of this organization.
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Mascanzoni F, Iannitti R, Colanzi A. Functional Coordination among the Golgi Complex, the Centrosome and the Microtubule Cytoskeleton during the Cell Cycle. Cells 2022; 11:cells11030354. [PMID: 35159164 PMCID: PMC8834581 DOI: 10.3390/cells11030354] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 12/11/2022] Open
Abstract
The Golgi complex of mammalian cells is organized in a ribbon-like structure often closely associated with the centrosome during interphase. Conversely, the Golgi complex assumes a fragmented and dispersed configuration away from the centrosome during mitosis. The structure of the Golgi complex and the relative position to the centrosome are dynamically regulated by microtubules. Many pieces of evidence reveal that this microtubule-mediated dynamic association between the Golgi complex and centrosome is of functional significance in cell polarization and division. Here, we summarize findings indicating how the Golgi complex and the centrosome cooperate in organizing the microtubule network for the directional protein transport and centrosome positioning required for cell polarization and regulating fundamental cell division processes.
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Tang S, Davoudi Z, Wang G, Xu Z, Rehman T, Prominski A, Tian B, Bratlie KM, Peng H, Wang Q. Soft materials as biological and artificial membranes. Chem Soc Rev 2021; 50:12679-12701. [PMID: 34636824 DOI: 10.1039/d1cs00029b] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The past few decades have seen emerging growth in the field of soft materials for synthetic biology. This review focuses on soft materials involved in biological and artificial membranes. The biological membranes discussed here are mainly those involved in the structure and function of cells and organelles. As building blocks in medicine, non-native membranes including nanocarriers (NCs), especially liposomes and DQAsomes, and polymeric membranes for scaffolds are constructed from amphiphilic combinations of lipids, proteins, and carbohydrates. Artificial membranes can be prepared using synthetic, soft materials and molecules and then incorporated into structures through self-organization to form micelles or niosomes. The modification of artificial membranes can be realized using traditional chemical methods such as click reactions to target the delivery of NCs and control the release of therapeutics. The biomembrane, a lamellar structure inlaid with ion channels, receptors, lipid rafts, enzymes, and other functional units, separates cells and organelles from the environment. An active domain inserted into the membrane and organelles for energy conversion and cellular communication can target disease by changing the membrane's composition, structure, and fluidity and affecting the on/off status of the membrane gates. The biological membrane targets analyzing pathological mechanisms and curing complex diseases, which inspires us to create NCs with artificial membranes.
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Affiliation(s)
- Shukun Tang
- Department of Pharmaceutics, Daqing Branch, Harbin Medical University, Research and Development of Natural Products Key Laboratory of Harbin Medical University, 39 Xin Yang Road, Daqing, 163319, China.
| | - Zahra Davoudi
- Department of Chemical and Biological Engineering, Iowa State University, 1014 Sweeney Hall, Ames, IA 50011, USA.
| | - Guangtian Wang
- Department of Pharmaceutics, Daqing Branch, Harbin Medical University, Research and Development of Natural Products Key Laboratory of Harbin Medical University, 39 Xin Yang Road, Daqing, 163319, China.
| | - Zihao Xu
- Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA
| | - Tanzeel Rehman
- Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA
| | - Aleksander Prominski
- The James Franck Institute, Department of Chemistry, The Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Bozhi Tian
- The James Franck Institute, Department of Chemistry, The Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Kaitlin M Bratlie
- Department of Chemical and Biological Engineering, Iowa State University, 1014 Sweeney Hall, Ames, IA 50011, USA. .,Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA
| | - Haisheng Peng
- Department of Pharmaceutics, Daqing Branch, Harbin Medical University, Research and Development of Natural Products Key Laboratory of Harbin Medical University, 39 Xin Yang Road, Daqing, 163319, China.
| | - Qun Wang
- Department of Chemical and Biological Engineering, Iowa State University, 1014 Sweeney Hall, Ames, IA 50011, USA.
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Wortzel I, Maik-Rachline G, Yadav SS, Hanoch T, Seger R. Mitotic HOOK3 phosphorylation by ERK1c drives microtubule-dependent Golgi destabilization and fragmentation. iScience 2021; 24:102670. [PMID: 34189435 PMCID: PMC8215223 DOI: 10.1016/j.isci.2021.102670] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/07/2020] [Accepted: 05/27/2021] [Indexed: 11/24/2022] Open
Abstract
ERK1c is an alternatively spliced isoform of ERK1 that specifically regulates mitotic Golgi fragmentation, which allows division of the Golgi during mitosis. We have previously shown that ERK1c translocates to the Golgi during mitosis where it is activated by a resident MEK1b to induce Golgi fragmentation. However, the mechanism of ERK1c functions in the Golgi remained obscure. Here, we searched for ERK1c substrates and identified HOOK3 as a mediator of ERK1c-induced mitotic Golgi fragmentation, which requires a second phosphorylation by AuroraA for its function. In cycling cells, HOOK3 interacts with microtubules (MTs) and links them to the Golgi. Early in mitosis, HOOK3 is phosphorylated by ERK1c and later by AuroraA, resulting in HOOK3 detachment from the MTs, and elevated interaction with GM130. This detachment modulates Golgi stability and allows fragmentation of the Golgi. This study demonstrates a novel mechanism of Golgi apparatus destabilization early in mitosis to allow mitotic progression.
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Affiliation(s)
- Inbal Wortzel
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Galia Maik-Rachline
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Suresh Singh Yadav
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Tamar Hanoch
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Rony Seger
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel
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Chakrabarti R, Lee M, Higgs HN. Multiple roles for actin in secretory and endocytic pathways. Curr Biol 2021; 31:R603-R618. [PMID: 34033793 DOI: 10.1016/j.cub.2021.03.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Actin filaments play multiple roles in the secretory pathway and in endosome dynamics in mammals, including maintenance of Golgi structure, release of membrane cargo from the trans-Golgi network (TGN), endocytosis, and endosomal sorting dynamics. In addition, TGN carrier transport and endocytosis both occur by multiple mechanisms in mammals. Actin likely plays a role in at least four mammalian endocytic pathways, five pathways for membrane release from the TGN, and three processes involving endosomes. Also, the mammalian Golgi structure is highly dynamic, and actin is likely important for these dynamics. One challenge for many of these processes is the need to deal with other membrane-associated structures, such as the cortical actin network at the plasma membrane or the matrix that surrounds the Golgi. Arp2/3 complex is a major actin assembly factor in most of the processes mentioned, but roles for formins and tandem WH2-motif-containing assembly factors are being elucidated and are anticipated to grow with further study. The specific role for actin has not been defined for most of these processes, but is likely to involve the generation of force for membrane dynamics, either by actin polymerization itself or by myosin motor activity. Defining these processes mechanistically is necessary for understanding membrane dynamics in general, as well as pathways that utilize these processes, such as autophagy.
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Affiliation(s)
- Rajarshi Chakrabarti
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Miriam Lee
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Henry N Higgs
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
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Vergarajauregui S, Becker R, Steffen U, Sharkova M, Esser T, Petzold J, Billing F, Kapiloff MS, Schett G, Thievessen I, Engel FB. AKAP6 orchestrates the nuclear envelope microtubule-organizing center by linking golgi and nucleus via AKAP9. eLife 2020; 9:61669. [PMID: 33295871 PMCID: PMC7725499 DOI: 10.7554/elife.61669] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/03/2020] [Indexed: 12/31/2022] Open
Abstract
The switch from centrosomal microtubule-organizing centers (MTOCs) to non-centrosomal MTOCs during differentiation is poorly understood. Here, we identify AKAP6 as key component of the nuclear envelope MTOC. In rat cardiomyocytes, AKAP6 anchors centrosomal proteins to the nuclear envelope through its spectrin repeats, acting as an adaptor between nesprin-1α and Pcnt or AKAP9. In addition, AKAP6 and AKAP9 form a protein platform tethering the Golgi to the nucleus. Both Golgi and nuclear envelope exhibit MTOC activity utilizing either AKAP9, or Pcnt-AKAP9, respectively. AKAP6 is also required for formation and activity of the nuclear envelope MTOC in human osteoclasts. Moreover, ectopic expression of AKAP6 in epithelial cells is sufficient to recruit endogenous centrosomal proteins. Finally, AKAP6 is required for cardiomyocyte hypertrophy and osteoclast bone resorption activity. Collectively, we decipher the MTOC at the nuclear envelope as a bi-layered structure generating two pools of microtubules with AKAP6 as a key organizer.
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Affiliation(s)
- Silvia Vergarajauregui
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Robert Becker
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ulrike Steffen
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Maria Sharkova
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Tilman Esser
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Jana Petzold
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Florian Billing
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Michael S Kapiloff
- Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, United States
| | - George Schett
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Ingo Thievessen
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Muscle Research Center Erlangen (MURCE), Erlangen, Germany
| | - Felix B Engel
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Muscle Research Center Erlangen (MURCE), Erlangen, Germany
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Jiang Y, Liu Y, Han F, Zhou J, Zhang X, Xu J, Yu Z, Zhao S, Gao F, Zhao H. Loss of GM130 does not impair oocyte meiosis and embryo development in mice. Biochem Biophys Res Commun 2020; 532:336-340. [PMID: 32873390 DOI: 10.1016/j.bbrc.2020.08.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 01/23/2023]
Abstract
Golgi matrix protein 130 (GM130), encoded by GOLGA2, is the classical marker of the Golgi apparatus. It plays important roles in various mitotic events, such as interacting with importin-alpha and liberating spindle assembly factor TPX2 to regulate mitotic spindle formation. A previous study showed that in vitro knockdown of GM130 could regulate the meiotic spindle pole assembly. In the current study, we found that knockout (KO) mice progressively died, had a small body size and were completely infertile. Furthermore, we constructed an oocyte-specific GM130 knockout mouse model (GM130-ooKO) driven by Gdf9-Cre. Through breeding assays, we found that the GM130-ooKO mice showed similar fecundity as control mice. During superovulation assays, the KO and GM130-ooKO mice had comparable numbers of ovulated eggs, oocyte maturation rates and normal polar bodies, similar to the control groups. Thus, this study indicated that deletion of GM130 might have a limited impact on the maturation and morphology of oocytes. This might due to more than one golgin sharing the same function, with others compensating for the loss of GM130.
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Affiliation(s)
- Yonghui Jiang
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Yue Liu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Feng Han
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Science, Beijing, 100101, China
| | - Jingjing Zhou
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Science, Beijing, 100101, China
| | - Xinze Zhang
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Junting Xu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Zhiheng Yu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Shigang Zhao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Fei Gao
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Science, Beijing, 100101, China.
| | - Han Zhao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China.
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