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Zein-Sabatto H, Brockett JS, Jin L, Husbands CA, Lee J, Fang J, Buehler J, Bullock SL, Lerit DA. Centrocortin potentiates co-translational localization of its mRNA to the centrosome via dynein. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.09.607365. [PMID: 39149256 PMCID: PMC11326273 DOI: 10.1101/2024.08.09.607365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Centrosomes rely upon proteins within the pericentriolar material to nucleate and organize microtubules. Several mRNAs also reside at centrosomes, although less is known about how and why they accumulate there. We previously showed that local Centrocortin (Cen) mRNA supports centrosome separation, microtubule organization, and viability in Drosophila embryos. Here, using Cen mRNA as a model, we examine mechanisms of centrosomal mRNA localization. We find that while the Cen N'-terminus is sufficient for protein enrichment at centrosomes, multiple domains cooperate to concentrate Cen mRNA at this location. We further identify an N'-terminal motif within Cen that is conserved among dynein cargo adaptor proteins and test its contribution to RNA localization. Our results support a model whereby Cen protein enables the accumulation of its own mRNA to centrosomes through a mechanism requiring active translation, microtubules, and the dynein motor complex. Taken together, our data uncover the basis of translation-dependent localization of a centrosomal RNA required for mitotic integrity.
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Affiliation(s)
- Hala Zein-Sabatto
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
| | - Jovan S. Brockett
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
| | - Li Jin
- Division of Cell Biology, MRC Laboratory of Molecular Biology, Cambridge, UK
| | | | - Jina Lee
- Emory College of Arts and Sciences, Emory University, Atlanta, GA 30322
- Present Address: University of Pennsylvania School of Dental Medicine, Philadelphia, PA 19104
| | - Junnan Fang
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
| | - Joseph Buehler
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
| | - Simon L. Bullock
- Division of Cell Biology, MRC Laboratory of Molecular Biology, Cambridge, UK
- co-corresponding authors
| | - Dorothy A. Lerit
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
- co-corresponding authors
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2
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Balcerak A, Szafron LA, Rubel T, Swiderska B, Bonna AM, Konarzewska M, Sołtyszewski I, Kupryjanczyk J, Szafron LM. A Multi-Faceted Analysis Showing CRNDE Transcripts and a Recently Confirmed Micropeptide as Important Players in Ovarian Carcinogenesis. Int J Mol Sci 2024; 25:4381. [PMID: 38673965 PMCID: PMC11050281 DOI: 10.3390/ijms25084381] [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: 03/18/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
CRNDE is considered an oncogene expressed as long non-coding RNA. Our previous paper is the only one reporting CRNDE as a micropeptide-coding gene. The amino acid sequence of this micropeptide (CRNDEP) has recently been confirmed by other researchers. This study aimed at providing a mass spectrometry (MS)-based validation of the CRNDEP sequence and an investigation of how the differential expression of CRNDE(P) influences the metabolism and chemoresistance of ovarian cancer (OvCa) cells. We also assessed cellular localization changes of CRNDEP, looked for its protein partners, and bioinformatically evaluated its RNA-binding capacities. Herein, we detected most of the CRNDEP sequence by MS. Moreover, our results corroborated the oncogenic role of CRNDE, portraying it as the gene impacting carcinogenesis at the stages of DNA transcription and replication, affecting the RNA metabolism, and stimulating the cell cycle progression and proliferation, with CRNDEP being detected in the centrosomes of dividing cells. We also showed that CRNDEP is located in nucleoli and revealed interactions of this micropeptide with p54, an RNA helicase. Additionally, we proved that high CRNDE(P) expression increases the resistance of OvCa cells to treatment with microtubule-targeted cytostatics. Furthermore, altered CRNDE(P) expression affected the activity of the microtubular cytoskeleton and the formation of focal adhesion plaques. Finally, according to our in silico analyses, CRNDEP is likely capable of RNA binding. All these results contribute to a better understanding of the CRNDE(P) role in OvCa biology, which may potentially improve the screening, diagnosis, and treatment of this disease.
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Affiliation(s)
- Anna Balcerak
- Department of Pathology and Anatomical Sciences, State University of New York, Buffalo, NY 14203, USA
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | | | - Tymon Rubel
- Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - Bianka Swiderska
- Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | | | | | | | - Jolanta Kupryjanczyk
- Department of Cancer Pathomorphology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Lukasz Michal Szafron
- Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
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3
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Park JE, Kim TS, Zeng Y, Mikolaj M, Il Ahn J, Alam MS, Monnie CM, Shi V, Zhou M, Chun TW, Maldarelli F, Narayan K, Ahn J, Ashwell JD, Strebel K, Lee KS. Centrosome amplification and aneuploidy driven by the HIV-1-induced Vpr•VprBP•Plk4 complex in CD4 + T cells. Nat Commun 2024; 15:2017. [PMID: 38443376 PMCID: PMC10914751 DOI: 10.1038/s41467-024-46306-8] [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: 05/09/2023] [Accepted: 02/14/2024] [Indexed: 03/07/2024] Open
Abstract
HIV-1 infection elevates the risk of developing various cancers, including T-cell lymphoma. Whether HIV-1-encoded proteins directly contribute to oncogenesis remains unknown. We observe that approximately 1-5% of CD4+ T cells from the blood of people living with HIV-1 exhibit over-duplicated centrioles, suggesting that centrosome amplification underlies the development of HIV-1-associated cancers by driving aneuploidy. Through affinity purification, biochemical, and cellular analyses, we discover that Vpr, an accessory protein of HIV-1, hijacks the centriole duplication machinery and induces centrosome amplification and aneuploidy. Mechanistically, Vpr forms a cooperative ternary complex with an E3 ligase subunit, VprBP, and polo-like kinase 4 (Plk4). Unexpectedly, however, the complex enhances Plk4's functionality by promoting its relocalization to the procentriole assembly and induces centrosome amplification. Loss of either Vpr's C-terminal 17 residues or VprBP acidic region, the two elements required for binding to Plk4 cryptic polo-box, abrogates Vpr's capacity to induce these events. Furthermore, HIV-1 WT, but not its Vpr mutant, induces multiple centrosomes and aneuploidy in human primary CD4+ T cells. We propose that the Vpr•VprBP•Plk4 complex serves as a molecular link that connects HIV-1 infection to oncogenesis and that inhibiting the Vpr C-terminal motif may reduce the occurrence of HIV-1-associated cancers.
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Affiliation(s)
- Jung-Eun Park
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Tae-Sung Kim
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Yan Zeng
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Melissa Mikolaj
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Jong Il Ahn
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Muhammad S Alam
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Christina M Monnie
- Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15260, USA
| | - Victoria Shi
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ming Zhou
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Tae-Wook Chun
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Frank Maldarelli
- HIV Dynamics and Replication Program, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Kedar Narayan
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Jinwoo Ahn
- Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15260, USA
| | - Jonathan D Ashwell
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Klaus Strebel
- Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kyung S Lee
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
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4
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Fang J, Tian W, Quintanilla MA, Beach JR, Lerit DA. The PCM scaffold enables RNA localization to centrosomes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.13.575509. [PMID: 38469150 PMCID: PMC10926663 DOI: 10.1101/2024.01.13.575509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
As microtubule-organizing centers, centrosomes direct assembly of the bipolar mitotic spindle required for chromosome segregation and genome stability. Centrosome activity requires the dynamic assembly of pericentriolar material (PCM), the composition and organization of which changes throughout the cell cycle. Recent studies highlight the conserved localization of several mRNAs encoded from centrosome-associated genes enriched at centrosomes, including Pericentrin-like protein (Plp) mRNA. However, relatively little is known about how RNAs localize to centrosomes and influence centrosome function. Here, we examine mechanisms underlying the subcellular localization of Plp mRNA. We find that Plp mRNA localization is puromycin-sensitive, and the Plp coding sequence is both necessary and sufficient for RNA localization, consistent with a co-translational transport mechanism. We identify regions within the Plp coding sequence that regulate Plp mRNA localization. Finally, we show that protein-protein interactions critical for elaboration of the PCM scaffold permit RNA localization to centrosomes. Taken together, these findings inform the mechanistic basis of Plp mRNA localization and lend insight into the oscillatory enrichment of RNA at centrosomes.
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Affiliation(s)
- Junnan Fang
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
- Equal contributions
| | - Weiyi Tian
- Equal contributions
- Emory College of Arts and Sciences, Emory University, Atlanta, GA 30322
| | - Melissa A. Quintanilla
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153
| | - Jordan R. Beach
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153
| | - Dorothy A. Lerit
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322
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5
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Aljiboury A, Hehnly H. The centrosome - diverse functions in fertilization and development across species. J Cell Sci 2023; 136:jcs261387. [PMID: 38038054 PMCID: PMC10730021 DOI: 10.1242/jcs.261387] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023] Open
Abstract
The centrosome is a non-membrane-bound organelle that is conserved across most animal cells and serves various functions throughout the cell cycle. In dividing cells, the centrosome is known as the spindle pole and nucleates a robust microtubule spindle to separate genetic material equally into two daughter cells. In non-dividing cells, the mother centriole, a substructure of the centrosome, matures into a basal body and nucleates cilia, which acts as a signal-transducing antenna. The functions of centrosomes and their substructures are important for embryonic development and have been studied extensively using in vitro mammalian cell culture or in vivo using invertebrate models. However, there are considerable differences in the composition and functions of centrosomes during different aspects of vertebrate development, and these are less studied. In this Review, we discuss the roles played by centrosomes, highlighting conserved and divergent features across species, particularly during fertilization and embryonic development.
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Affiliation(s)
- Abrar Aljiboury
- Syracuse University, Department of Biology, 107 College Place, Syracuse, NY 13244, USA
- Syracuse University, BioInspired Institute, Syracuse, NY 13244, USA
| | - Heidi Hehnly
- Syracuse University, Department of Biology, 107 College Place, Syracuse, NY 13244, USA
- Syracuse University, BioInspired Institute, Syracuse, NY 13244, USA
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6
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Jaiswal S, Sanghi S, Singh P. Separation-of-function MCPH-associated mutations in CPAP affect centriole number and length. J Cell Sci 2023; 136:jcs261297. [PMID: 37823337 DOI: 10.1242/jcs.261297] [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: 05/01/2023] [Accepted: 09/27/2023] [Indexed: 10/13/2023] Open
Abstract
Centrioles are microtubule-based cylindrical ultrastructures characterized by their definite size and robustness. The molecular capping protein, CPAP (also known as CENPJ) engages its N-terminal region with the centriole microtubules to regulate their length. Nevertheless, the conserved C-terminal glycine-rich G-box of CPAP, which interacts with the centriole inner cartwheel protein STIL, is frequently mutated in primary microcephaly (MCPH) patients. Here, we show that two different MCPH-associated variants, E1235V and D1196N in the CPAP G-box, affect distinct functions at centrioles. The E1235V mutation reduces CPAP centriole recruitment and causes overly long centrioles. The D1196N mutation increases centriole numbers without affecting centriole localization. Both mutations prevent binding to STIL, which controls centriole duplication. Our work highlights the involvement of an alternative CEP152-dependent route for CPAP centriole localization. Molecular dynamics simulations suggest that E1235V leads to an increase in G-box flexibility, which could have implications on its molecular interactions. Collectively, we demonstrate that a CPAP region outside the microtubule-interacting domains influences centriole number and length, which translates to spindle defects and reduced cell viability. Our work provides new insights into the molecular causes of primary microcephaly.
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Affiliation(s)
- Sonal Jaiswal
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, NH 62, Nagaur Road, Karwar 342037, Jodhpur, Rajasthan, India
| | - Srishti Sanghi
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, NH 62, Nagaur Road, Karwar 342037, Jodhpur, Rajasthan, India
| | - Priyanka Singh
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, NH 62, Nagaur Road, Karwar 342037, Jodhpur, Rajasthan, India
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7
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Shakhov AS, Churkina AS, Kotlobay AA, Alieva IB. The Endothelial Centrosome: Specific Features and Functional Significance for Endothelial Cell Activity and Barrier Maintenance. Int J Mol Sci 2023; 24:15392. [PMID: 37895072 PMCID: PMC10607758 DOI: 10.3390/ijms242015392] [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: 08/22/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
This review summarizes information about the specific features that are characteristic of the centrosome and its relationship with the cell function of highly specialized cells, such as endotheliocytes. It is based on data from other researchers and our own long-term experience. The participation of the centrosome in the functional activity of these cells, including its involvement in the performance of the main barrier function of the endothelium, is discussed. According to modern concepts, the centrosome is a multifunctional complex and an integral element of a living cell; the functions of which are not limited only to the ability to polymerize microtubules. The location of the centrosome near the center of the interphase cell, the concentration of various regulatory proteins in it, the organization of the centrosome radial system of microtubules through which intracellular transport is carried out by motor proteins and the involvement of the centrosome in the process of the perception of the external signals and their transmission make this cellular structure a universal regulatory and distribution center, controlling the entire dynamic morphology of an animal cell. Drawing from modern data on the tissue-specific features of the centrosome's structure, we discuss the direct involvement of the centrosome in the performance of functions by specialized cells.
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Affiliation(s)
- Anton Sergeevich Shakhov
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 1–40, Leninskye Gory, 119992 Moscow, Russia
| | - Aleksandra Sergeevna Churkina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 1–40, Leninskye Gory, 119992 Moscow, Russia
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 1–73, Leninskye Gory, 119992 Moscow, Russia
| | - Anatoly Alekseevich Kotlobay
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 1a Malaya Pirogovskaya St., 119435 Moscow, Russia
| | - Irina Borisovna Alieva
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 1–40, Leninskye Gory, 119992 Moscow, Russia
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8
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Wu T, Sang Q, Wang L. Mechanism of spindle assembly regulated by the human oocyte microtubule organizing centre in human oocytes. Clin Transl Med 2023; 13:e1222. [PMID: 37715449 PMCID: PMC10504452 DOI: 10.1002/ctm2.1222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 09/17/2023] Open
Affiliation(s)
- Tianyu Wu
- Institute of Pediatrics, Children's Hospital of Fudan University, State Key Laboratory of Genetic EngineeringInstitutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan UniversityShanghaiChina
| | - Qing Sang
- Institute of Pediatrics, Children's Hospital of Fudan University, State Key Laboratory of Genetic EngineeringInstitutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan UniversityShanghaiChina
| | - Lei Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, State Key Laboratory of Genetic EngineeringInstitutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan UniversityShanghaiChina
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9
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Huang Y, Lu C, Wang H, Gu L, Fu YX, Li GM. DNAJA2 deficiency activates cGAS-STING pathway via the induction of aberrant mitosis and chromosome instability. Nat Commun 2023; 14:5246. [PMID: 37640708 PMCID: PMC10462666 DOI: 10.1038/s41467-023-40952-0] [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: 10/20/2022] [Accepted: 08/17/2023] [Indexed: 08/31/2023] Open
Abstract
Molecular chaperone HSP70s are attractive targets for cancer therapy, but their substrate broadness and functional non-specificity have limited their role in therapeutical success. Functioning as HSP70's cochaperones, HSP40s determine the client specificity of HSP70s, and could be better targets for cancer therapy. Here we show that tumors defective in HSP40 member DNAJA2 are benefitted from immune-checkpoint blockade (ICB) therapy. Mechanistically, DNAJA2 maintains centrosome homeostasis by timely degrading key centriolar satellite proteins PCM1 and CEP290 via HSC70 chaperone-mediated autophagy (CMA). Tumor cells depleted of DNAJA2 or CMA factor LAMP2A exhibit elevated levels of centriolar satellite proteins, which causes aberrant mitosis characterized by abnormal spindles, chromosome missegregation and micronuclei formation. This activates the cGAS-STING pathway to enhance ICB therapy response in tumors derived from DNAJA2-deficient cells. Our study reveals a role for DNAJA2 to regulate mitotic division and chromosome stability and suggests DNAJA2 as a potential target to enhance cancer immunotherapy, thereby providing strategies to advance HSPs-based cancer therapy.
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Affiliation(s)
- Yaping Huang
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Changzheng Lu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, China
| | - Hanzhi Wang
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Liya Gu
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yang-Xin Fu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Department of Basic Medical Sciences, Tsinghua University School of Medicine, Beijing, China.
| | - Guo-Min Li
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Chinese Institutes for Medical Research, Beijing, China.
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10
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Park JE, Kim TS, Zeng Y, Monnie CM, Alam MS, Zhou M, Mikolaj M, Maldarelli F, Narayan K, Ahn J, Ashwell JD, Strebel K, Lee KS. Centrosome amplification and aneuploidy driven by the HIV-1-induced Vpr•VprBP•Plk4 complex in CD4 + T cells. RESEARCH SQUARE 2023:rs.3.rs-2924123. [PMID: 37645926 PMCID: PMC10462243 DOI: 10.21203/rs.3.rs-2924123/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
HIV-1 infection elevates the risk of developing various cancers, including T-cell lymphoma. Whether HIV-1-encoded proteins directly contribute to oncogenesis remains unknown. We observed that approximately 1-5% of CD4+ T cells from the blood of people living with HIV-1 exhibit over-duplicated centrioles, suggesting that centrosome amplification underlies the development of HIV-1-associated cancers by driving aneuploidy. Through affinity purification, biochemical, and cell biology analyses, we discovered that Vpr, an accessory protein of HIV-1, hijacks the centriole duplication machinery and induces centrosome amplification and aneuploidy. Mechanistically, Vpr formed a cooperative ternary complex with an E3 ligase subunit, VprBP, and polo-like kinase 4 (Plk4). Unexpectedly, however, the complex enhanced Plk4's functionality by promoting its relocalization to the procentriole assembly and induced centrosome amplification. Loss of either Vpr's C-terminal 17 residues or VprBP acidic region, the two elements required for binding to Plk4 cryptic polo-box, abrogated Vpr's capacity to induce all these events. Furthermore, HIV-1 WT, but not its Vpr mutant, induced multiple centrosomes and aneuploidy in primary CD4+ T cells. We propose that the Vpr•VprBP•Plk4 complex serves as a molecular link that connects HIV-1 infection to oncogenesis and that inhibiting the Vpr C-terminal motif may reduce the occurrence of HIV-1-associated cancers.
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Affiliation(s)
- Jung-Eun Park
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- These authors contributed equally to this work
| | - Tae-Sung Kim
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- These authors contributed equally to this work
| | - Yan Zeng
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Christina M. Monnie
- Department of Structural Biology and Pittsburgh Center for HIV Protein Interactions, University of Pittsburgh School of Medicine, Biomedical Science Tower 3, RM 1055, 3501 Fifth Ave., Pittsburgh, PA, 15260, USA
| | - Muhammad S. Alam
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ming Zhou
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, Maryland 21702, USA
| | - Melissa Mikolaj
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Frank Maldarelli
- HIV Dynamics and Replication Program, NCI, NIH, Frederick, MD 21702, USA
| | - Kedar Narayan
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Jinwoo Ahn
- Department of Structural Biology and Pittsburgh Center for HIV Protein Interactions, University of Pittsburgh School of Medicine, Biomedical Science Tower 3, RM 1055, 3501 Fifth Ave., Pittsburgh, PA, 15260, USA
| | - Jonathan D. Ashwell
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Klaus Strebel
- Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Kyung S. Lee
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
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11
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Il Ahn J, Zhang L, Ravishankar H, Fan L, Kirsch K, Zeng Y, Meng L, Park JE, Yun HY, Ghirlando R, Ma B, Ball D, Ku B, Nussinov R, Schmit JD, Heinz WF, Kim SJ, Karpova T, Wang YX, Lee KS. Architectural basis for cylindrical self-assembly governing Plk4-mediated centriole duplication in human cells. Commun Biol 2023; 6:712. [PMID: 37433832 PMCID: PMC10336005 DOI: 10.1038/s42003-023-05067-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 06/23/2023] [Indexed: 07/13/2023] Open
Abstract
Proper organization of intracellular assemblies is fundamental for efficient promotion of biochemical processes and optimal assembly functionality. Although advances in imaging technologies have shed light on how the centrosome is organized, how its constituent proteins are coherently architected to elicit downstream events remains poorly understood. Using multidisciplinary approaches, we showed that two long coiled-coil proteins, Cep63 and Cep152, form a heterotetrameric building block that undergoes a stepwise formation into higher molecular weight complexes, ultimately generating a cylindrical architecture around a centriole. Mutants defective in Cep63•Cep152 heterotetramer formation displayed crippled pericentriolar Cep152 organization, polo-like kinase 4 (Plk4) relocalization to the procentriole assembly site, and Plk4-mediated centriole duplication. Given that the organization of pericentriolar materials (PCM) is evolutionarily conserved, this work could serve as a model for investigating the structure and function of PCM in other species, while offering a new direction in probing the organizational defects of PCM-related human diseases.
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Affiliation(s)
- Jong Il Ahn
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Liang Zhang
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Harsha Ravishankar
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lixin Fan
- Basic Science Program, Frederick National Laboratory for Cancer Research, Small-Angle X-ray Scattering Core Facility, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Klara Kirsch
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Yan Zeng
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lingjun Meng
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Jung-Eun Park
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Hye-Yeoung Yun
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Rodolfo Ghirlando
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Buyong Ma
- Basic Science Program, Leidos Biomedical Research, Inc., Cancer and Inflammation Program, National Cancer Institute, Frederick, MD, 21702, USA
- School of Pharmacy, Shanghai Jiao Tong University, 200240, Shanghai, P R China
| | - David Ball
- Laboratory of Receptor Biology and Gene Expression, Optical Microscopy Core, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Bonsu Ku
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Ruth Nussinov
- Basic Science Program, Leidos Biomedical Research, Inc., Cancer and Inflammation Program, National Cancer Institute, Frederick, MD, 21702, USA
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Jeremy D Schmit
- Department of Physics, Kansas State University, Manhattan, KS, 66506, USA
| | - William F Heinz
- Optical Microscopy and Analysis Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Seung Jun Kim
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Tatiana Karpova
- Laboratory of Receptor Biology and Gene Expression, Optical Microscopy Core, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Yun-Xing Wang
- Protein-Nucleic Acid Interaction Section, Center for Structural Biology, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Kyung S Lee
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
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12
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Liu H, Li H, Jiang Z, Jin S, Song R, Yang Y, Li J, Huang J, Zhang X, Dong X, Mori M, Fritzler MJ, He L, Cardoso WV, Lu J. A local translation program regulates centriole amplification in the airway epithelium. Sci Rep 2023; 13:7090. [PMID: 37127654 PMCID: PMC10151349 DOI: 10.1038/s41598-023-34365-8] [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: 01/10/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023] Open
Abstract
Biogenesis of organelles requires targeting of a subset of proteins to specific subcellular domains by signal peptides or mechanisms controlling mRNA localization and local translation. How local distribution and translation of specific mRNAs for organelle biogenesis is achieved remains elusive and likely to be dependent on the cellular context. Here we identify Trinucleotide repeat containing-6a (Tnrc6a), a component of the miRNA pathway, distinctively localized to apical granules of differentiating airway multiciliated cells (MCCs) adjacent to centrioles. In spite of being enriched in TNRC6A and the miRNA-binding protein AGO2, they lack enzymes for mRNA degradation. Instead, we found these apical granules enriched in components of the mRNA translation machinery and newly synthesized proteins suggesting that they are specific hubs for target mRNA localization and local translation in MCCs. Consistent with this, Tnrc6a loss of function prevented formation of these granules and led to a broad reduction, rather than stabilization of miRNA targets. These included downregulation of key genes involved in ciliogenesis and was associated with defective multicilia formation both in vivo and in primary airway epithelial cultures. Similar analysis of Tnrc6a disruption in yolk sac showed stabilization of miRNA targets, highlighting the potential diversity of these mechanisms across organs.
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Affiliation(s)
- Helu Liu
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Huijun Li
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Zhihua Jiang
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Shibo Jin
- Division of Cellular and Developmental Biology, Department of Molecular & Cell Biology, University of California, Berkeley, CA, USA
| | - Rui Song
- Division of Cellular and Developmental Biology, Department of Molecular & Cell Biology, University of California, Berkeley, CA, USA
| | - Ying Yang
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Jun Li
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Jingshu Huang
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Xiaoqing Zhang
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Xuesong Dong
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Munemasa Mori
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA
| | - Marvin J Fritzler
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Lin He
- Division of Cellular and Developmental Biology, Department of Molecular & Cell Biology, University of California, Berkeley, CA, USA
| | - Wellington V Cardoso
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA.
| | - Jining Lu
- The Columbia Center for Human Development, Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine, Columbia University Medical Center, Columbia University, College of Physicians & Surgeons, 650 West 168th Street, BB 8-812, New York, NY, 10032, USA.
- Division of Lung Diseases, National Heart, Lung, and Blood Institute, National Institutes of Health, 6705 Rockledge Drive, Room 407-J, MSC 7952, Bethesda, MD, 20892-7952, USA.
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13
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Piezo mechanosensory channels regulate centrosome integrity and mitotic entry. Proc Natl Acad Sci U S A 2023; 120:e2213846120. [PMID: 36574677 PMCID: PMC9910506 DOI: 10.1073/pnas.2213846120] [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: 12/28/2022] Open
Abstract
Piezo1 and 2 are evolutionarily conserved mechanosensory cation channels known to function on the cell surface by responding to external pressure and transducing a mechanically activated Ca2+ current. Here we show that both Piezo1 and 2 also exhibit concentrated intracellular localization at centrosomes. Both Piezo1 and 2 loss-of-function and Piezo1 activation by the small molecule Yoda1 result in supernumerary centrosomes, premature centriole disengagement, multi-polar spindles, and mitotic delay. By using a GFP, Calmodulin and M13 Protein fusion (GCaMP) Ca2+-sensitive reporter, we show that perturbations in Piezo modulate Ca2+ flux at centrosomes. Moreover, the inhibition of Polo-like-kinase 1 eliminates Yoda1-induced centriole disengagement. Because previous studies have implicated force generation by microtubules as essential for maintaining centrosomal integrity, we propose that mechanotransduction by Piezo maintains pericentrosomal Ca2+ within a defined range, possibly through sensing cell intrinsic forces from microtubules.
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14
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The Male Mouse Meiotic Cilium Emanates from the Mother Centriole at Zygotene Prior to Centrosome Duplication. Cells 2022; 12:cells12010142. [PMID: 36611937 PMCID: PMC9818220 DOI: 10.3390/cells12010142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/19/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022] Open
Abstract
Cilia are hair-like projections of the plasma membrane with an inner microtubule skeleton known as axoneme. Motile cilia and flagella beat to displace extracellular fluids, playing important roles in the airways and reproductive system. On the contrary, primary cilia function as cell-type-dependent sensory organelles, detecting chemical, mechanical, or optical signals from the extracellular environment. Cilia dysfunction is associated with genetic diseases called ciliopathies and with some types of cancer. Cilia have been recently identified in zebrafish gametogenesis as an important regulator of bouquet conformation and recombination. However, there is little information about the structure and functions of cilia in mammalian meiosis. Here we describe the presence of cilia in male mouse meiotic cells. These solitary cilia formed transiently in 20% of zygotene spermatocytes and reached considerable lengths (up to 15-23 µm). CEP164 and CETN3 localization studies indicated that these cilia emanate from the mother centriole prior to centrosome duplication. In addition, the study of telomeric TFR2 suggested that cilia are not directly related to the bouquet conformation during early male mouse meiosis. Instead, based on TEX14 labeling of intercellular bridges in spermatocyte cysts, we suggest that mouse meiotic cilia may have sensory roles affecting cyst function during prophase I.
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15
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Wu T, Dong J, Fu J, Kuang Y, Chen B, Gu H, Luo Y, Gu R, Zhang M, Li W, Dong X, Sun X, Sang Q, Wang L. The mechanism of acentrosomal spindle assembly in human oocytes. Science 2022; 378:eabq7361. [DOI: 10.1126/science.abq7361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Meiotic spindle assembly ensures proper chromosome segregation in oocytes. However, the mechanisms behind spindle assembly in human oocytes remain largely unknown. We used three-dimensional high-resolution imaging of more than 2000 human oocytes to identify a structure that we named the human oocyte microtubule organizing center (huoMTOC). The proteins TACC3, CCP110, CKAP5, and DISC1 were found to be essential components of the huoMTOC. The huoMTOC arises beneath the oocyte cortex and migrates adjacent to the nuclear envelope before nuclear envelope breakdown (NEBD). After NEBD, the huoMTOC fragments and relocates on the kinetochores to initiate microtubule nucleation and spindle assembly. Disrupting the huoMTOC led to spindle assembly defects and oocyte maturation arrest. These results reveal a physiological mechanism of huoMTOC-regulated spindle assembly in human oocytes.
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Affiliation(s)
- Tianyu Wu
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
| | - Jie Dong
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
| | - Jing Fu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Yanping Kuang
- Department of Assisted Reproduction, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Biaobang Chen
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai 200032, China
| | - Hao Gu
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
| | - Yuxi Luo
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
| | - Ruihuan Gu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Meiling Zhang
- Center for Reproductive Medicine and Fertility Preservation Program, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Wen Li
- Center for Reproductive Medicine and Fertility Preservation Program, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xi Dong
- Reproductive Medicine Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Qing Sang
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
| | - Lei Wang
- Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China
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16
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Hibbard JVK, Vázquez N, Wallingford JB. Cilia proteins getting to work - how do they commute from the cytoplasm to the base of cilia? J Cell Sci 2022; 135:jcs259444. [PMID: 36073764 PMCID: PMC9482345 DOI: 10.1242/jcs.259444] [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] [Indexed: 11/20/2022] Open
Abstract
Cilia are multifunctional organelles that originated with the last eukaryotic common ancestor and play central roles in the life cycles of diverse organisms. The motile flagella that move single cells like sperm or unicellular organisms, the motile cilia on animal multiciliated cells that generate fluid flow in organs, and the immotile primary cilia that decorate nearly all cells in animals share many protein components in common, yet each also requires specialized proteins to perform their specialized functions. Despite a now-advanced understanding of how such proteins are transported within cilia, we still know very little about how they are transported from their sites of synthesis through the cytoplasm to the ciliary base. Here, we review the literature concerning this underappreciated topic in ciliary cell biology. We discuss both general mechanisms, as well as specific examples of motor-driven active transport and passive transport via diffusion-and-capture. We then provide deeper discussion of specific, illustrative examples, such as the diverse array of protein subunits that together comprise the intraflagellar transport (IFT) system and the multi-protein axonemal dynein motors that drive beating of motile cilia. We hope this Review will spur further work, shedding light not only on ciliogenesis and ciliary signaling, but also on intracellular transport in general.
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Affiliation(s)
| | | | - John B. Wallingford
- Department of Molecular Biosciences, University of Texas, Austin, TX 78751, USA
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17
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Aljiboury A, Mujcic A, Curtis E, Cammerino T, Magny D, Lan Y, Bates M, Freshour J, Ahmed-Braimeh YH, Hehnly H. Pericentriolar matrix (PCM) integrity relies on cenexin and polo-like kinase (PLK)1. Mol Biol Cell 2022; 33:br14. [PMID: 35609215 PMCID: PMC9582643 DOI: 10.1091/mbc.e22-01-0015] [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: 01/18/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 11/11/2022] Open
Abstract
Polo-like-kinase (PLK) 1 activity is associated with maintaining the functional and physical properties of the centrosome's pericentriolar matrix (PCM). In this study, we use a multimodal approach of human cells (HeLa), zebrafish embryos, and phylogenic analysis to test the role of a PLK1 binding protein, cenexin, in regulating the PCM. Our studies identify that cenexin is required for tempering microtubule nucleation by maintaining PCM cohesion in a PLK1-dependent manner. PCM architecture in cenexin-depleted zebrafish embryos was rescued with wild-type human cenexin, but not with a C-terminal cenexin mutant (S796A) deficient in PLK1 binding. We propose a model where cenexin's C terminus acts in a conserved manner in eukaryotes, excluding nematodes and arthropods, to sequester PLK1 that limits PCM substrate phosphorylation events required for PCM cohesion.
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Affiliation(s)
- Abrar Aljiboury
- Biology Department, Syracuse University, Syracuse, NY 13244
- BioInspired Institute, Syracuse University, Syracuse, NY 13244
| | - Amra Mujcic
- Biology Department, Syracuse University, Syracuse, NY 13244
| | - Erin Curtis
- Biology Department, Syracuse University, Syracuse, NY 13244
| | | | - Denise Magny
- Biology Department, Syracuse University, Syracuse, NY 13244
| | - Yiling Lan
- Biology Department, Syracuse University, Syracuse, NY 13244
| | - Michael Bates
- Biology Department, Syracuse University, Syracuse, NY 13244
| | - Judy Freshour
- Biology Department, Syracuse University, Syracuse, NY 13244
| | | | - Heidi Hehnly
- Biology Department, Syracuse University, Syracuse, NY 13244
- BioInspired Institute, Syracuse University, Syracuse, NY 13244
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18
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Fang J, Lerit DA. Orb-dependent polyadenylation contributes to PLP expression and centrosome scaffold assembly. Development 2022; 149:275606. [DOI: 10.1242/dev.200426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/25/2022] [Indexed: 01/09/2023]
Abstract
ABSTRACT
As the microtubule-organizing centers of most cells, centrosomes engineer the bipolar mitotic spindle required for error-free mitosis. Drosophila Pericentrin-like protein (PLP) directs formation of a pericentriolar material (PCM) scaffold required for PCM organization and microtubule-organizing center function. Here, we investigate the post-transcriptional regulation of Plp mRNA. We identify conserved binding sites for cytoplasmic polyadenylation element binding (CPEB) proteins within the Plp 3′-untranslated region and examine the role of the CPEB ortholog Oo18 RNA-binding protein (Orb) in Plp mRNA regulation. Our data show that Orb interacts biochemically with Plp mRNA to promote polyadenylation and PLP protein expression. Loss of orb, but not orb2, diminishes PLP levels in embryonic extracts. Consequently, PLP localization to centrosomes and its function in PCM scaffolding are compromised in orb mutant embryos, resulting in genomic instability and embryonic lethality. Moreover, we find that PLP overexpression restores centrosome scaffolding and rescues the cell division defects caused by orb depletion. Our data suggest that Orb modulates PLP expression at the level of Plp mRNA polyadenylation and demonstrates that the post-transcriptional regulation of core, conserved centrosomal mRNAs is crucial for centrosome function.
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Affiliation(s)
- Junnan Fang
- Emory University School of Medicine Department of Cell Biology , , Atlanta, GA 30322 , USA
| | - Dorothy A. Lerit
- Emory University School of Medicine Department of Cell Biology , , Atlanta, GA 30322 , USA
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19
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McCurdy BL, Jewett CE, Stemm-Wolf AJ, Duc HN, Joshi M, Espinosa JM, Prekeris R, Pearson CG. Trisomy 21 increases microtubules and disrupts centriolar satellite localization. Mol Biol Cell 2022; 33:br11. [PMID: 35476505 PMCID: PMC9635274 DOI: 10.1091/mbc.e21-10-0517-t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 11/11/2022] Open
Abstract
Trisomy 21, the source of Down syndrome, causes a 0.5-fold protein increase of the chromosome 21-resident gene Pericentrin (PCNT) and reduces primary cilia formation and signaling. We investigate how PCNT imbalances disrupt cilia. Using isogenic RPE-1 cells with increased chromosome 21 dosage, we find PCNT accumulates around the centrosome as a cluster of enlarged cytoplasmic puncta that localize along microtubules (MTs) and at MT ends. Cytoplasmic PCNT puncta impact the density, stability, and localization of the MT trafficking network required for primary cilia. The PCNT puncta appear to sequester cargo peripheral to centrosomes in what we call pericentrosomal crowding. The centriolar satellite proteins PCM1, CEP131, and CEP290, important for ciliogenesis, accumulate at enlarged PCNT puncta in trisomy 21 cells. Reducing PCNT when chromosome 21 ploidy is elevated is sufficient to decrease PCNT puncta and pericentrosomal crowding, reestablish a normal density of MTs around the centrosome, and restore ciliogenesis to wild-type levels. A transient reduction in MTs also decreases pericentrosomal crowding and partially rescues ciliogenesis in trisomy 21 cells, indicating that increased PCNT leads to defects in the MT network deleterious to normal centriolar satellite distribution. We propose that chromosome 21 aneuploidy disrupts MT-dependent intracellular trafficking required for primary cilia.
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Affiliation(s)
- Bailey L. McCurdy
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Cayla E. Jewett
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045-2537
- Linda Crnic Institute for Down Syndrome, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Alexander J. Stemm-Wolf
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Huy Nguyen Duc
- Functional Genomics Facility, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Molishree Joshi
- Functional Genomics Facility, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Joaquin M. Espinosa
- Linda Crnic Institute for Down Syndrome, University of Colorado School of Medicine, Aurora, CO 80045-2537
- Functional Genomics Facility, University of Colorado School of Medicine, Aurora, CO 80045-2537
- Department of Pharmacology, University of Colorado School of Medicine, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Rytis Prekeris
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045-2537
| | - Chad G. Pearson
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045-2537
- Linda Crnic Institute for Down Syndrome, University of Colorado School of Medicine, Aurora, CO 80045-2537
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20
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Wu D, Zhang Z, Jiang X, Du Y, Zhang S, Yang XD. Inflammasome Meets Centrosome: Understanding the Emerging Role of Centrosome in Controlling Inflammasome Activation. Front Immunol 2022; 13:826106. [PMID: 35281071 PMCID: PMC8907152 DOI: 10.3389/fimmu.2022.826106] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/07/2022] [Indexed: 12/30/2022] Open
Abstract
Inflammasomes are multi-protein platforms that are assembled in response to microbial and danger signals to activate proinflammatory caspase-1 for production of active form of IL-1β and induction of pyroptotic cell death. Where and how an inflammasome is assembled in cells has remained controversial. While the endoplasmic reticulum, mitochondria and Golgi apparatus have been reported to be associated with inflammasome assembly, none of these sites seems to match the morphology, number and size of activated inflammasomes that are microscopically observable as one single perinuclear micrometer-sized punctum in each cell. Recently, emerging evidence shows that NLRP3 and pyrin inflammasomes are assembled, activated and locally regulated at the centrosome, the major microtubule organizing center in mammalian cells, elegantly accounting for the singularity, size and perinuclear location of activated inflammasomes. These new exciting findings reveal the previously unappreciated importance of the centrosome in controlling inflammasome assembly and activation as well as inflammasome-related diseases.
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Affiliation(s)
- Dandan Wu
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenzhen Zhang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoli Jiang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaning Du
- Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuangyan Zhang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Dong Yang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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21
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Yan Z, Shi Q, Liu X, Li J, Ahire V, Zhang S, Zhang J, Yang D, Allen TD. The phytochemical, corynoline, diminishes Aurora kinase B activity to induce mitotic defect and polyploidy. Pharmacotherapy 2022; 147:112645. [DOI: 10.1016/j.biopha.2022.112645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/01/2022] [Accepted: 01/12/2022] [Indexed: 01/21/2023]
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22
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Sheung JY, Achiriloaie DH, Currie C, Peddireddy K, Xie A, Simon-Parker J, Lee G, Rust MJ, Das M, Ross JL, Robertson-Anderson RM. Motor-Driven Restructuring of Cytoskeleton Composites Leads to Tunable Time-Varying Elasticity. ACS Macro Lett 2021; 10:1151-1158. [PMID: 35549081 DOI: 10.1021/acsmacrolett.1c00500] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The composite cytoskeleton, comprising interacting networks of semiflexible actin and rigid microtubules, generates forces and restructures by using motor proteins such as myosins to enable key processes including cell motility and mitosis. Yet, how motor-driven activity alters the mechanics of cytoskeleton composites remains an open challenge. Here, we perform optical tweezers microrheology and confocal imaging of composites with varying actin-tubulin molar percentages (25-75, 50-50, and 75-25), driven by light-activated myosin II motors, to show that motor activity increases the elastic plateau modulus by over 2 orders of magnitude by active restructuring of both actin and microtubules that persists for hours after motor activation has ceased. Nonlinear microrheology measurements show that motor-driven restructuring increases the force response and stiffness and suppresses actin bending. The 50-50 composite exhibits the most dramatic mechanical response to motor activity due to the synergistic effects of added stiffness from the microtubules and sufficient motor substrate for pronounced activity.
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Affiliation(s)
- Janet Y. Sheung
- W. M. Keck Science Department, Scripps College, Pitzer College, and Claremont McKenna College, 925 N. Mills Ave., Claremont, California 91711, United States
| | - Daisy H. Achiriloaie
- W. M. Keck Science Department, Scripps College, Pitzer College, and Claremont McKenna College, 925 N. Mills Ave., Claremont, California 91711, United States
| | - Christopher Currie
- Department of Physics and Biophysics, University of San Diego, 5998 Alcala Park, San Diego, California 92110, United States
| | - Karthik Peddireddy
- Department of Physics and Biophysics, University of San Diego, 5998 Alcala Park, San Diego, California 92110, United States
| | - Aaron Xie
- W. M. Keck Science Department, Scripps College, Pitzer College, and Claremont McKenna College, 925 N. Mills Ave., Claremont, California 91711, United States
| | - Jessalyn Simon-Parker
- W. M. Keck Science Department, Scripps College, Pitzer College, and Claremont McKenna College, 925 N. Mills Ave., Claremont, California 91711, United States
| | - Gloria Lee
- Department of Physics and Biophysics, University of San Diego, 5998 Alcala Park, San Diego, California 92110, United States
| | - Michael J. Rust
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, Illinois 60637, United States
| | - Moumita Das
- School of Physics and Astronomy, Rochester Institute of Technology, Rochester, New York 14623, United States
| | - Jennifer L. Ross
- Department of Physics, Syracuse University, Syracuse, New York 13244, United States
| | - Rae M. Robertson-Anderson
- Department of Physics and Biophysics, University of San Diego, 5998 Alcala Park, San Diego, California 92110, United States
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23
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Duerinckx S, Désir J, Perazzolo C, Badoer C, Jacquemin V, Soblet J, Maystadt I, Tunca Y, Blaumeiser B, Ceulemans B, Courtens W, Debray F, Destree A, Devriendt K, Jansen A, Keymolen K, Lederer D, Loeys B, Meuwissen M, Moortgat S, Mortier G, Nassogne M, Sekhara T, Van Coster R, Van Den Ende J, Van der Aa N, Van Esch H, Vanakker O, Verhelst H, Vilain C, Weckhuysen S, Passemard S, Verloes A, Aeby A, Deconinck N, Van Bogaert P, Pirson I, Abramowicz M. Phenotypes and genotypes in non-consanguineous and consanguineous primary microcephaly: High incidence of epilepsy. Mol Genet Genomic Med 2021; 9:e1768. [PMID: 34402213 PMCID: PMC8457702 DOI: 10.1002/mgg3.1768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/06/2021] [Accepted: 07/03/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Primary microcephaly (PM) is defined as a significant reduction in occipitofrontal circumference (OFC) of prenatal onset. Clinical and genetic heterogeneity of PM represents a diagnostic challenge. METHODS We performed detailed phenotypic and genomic analyses in a large cohort (n = 169) of patients referred for PM and could establish a molecular diagnosis in 38 patients. RESULTS Pathogenic variants in ASPM and WDR62 were the most frequent causes in non-consanguineous patients in our cohort. In consanguineous patients, microarray and targeted gene panel analyses reached a diagnostic yield of 67%, which contrasts with a much lower rate in non-consanguineous patients (9%). Our series includes 11 novel pathogenic variants and we identify novel candidate genes including IGF2BP3 and DNAH2. We confirm the progression of microcephaly over time in affected children. Epilepsy was an important associated feature in our PM cohort, affecting 34% of patients with a molecular confirmation of the PM diagnosis, with various degrees of severity and seizure types. CONCLUSION Our findings will help to prioritize genomic investigations, accelerate molecular diagnoses, and improve the management of PM patients.
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Affiliation(s)
- Sarah Duerinckx
- Institut de Recherche Interdisciplinaire en Biologie Humaine et moléculaireUniversité Libre de BruxellesBrusselsBelgium
| | - Julie Désir
- Centre de Génétique HumaineInstitut de Pathologie et de GénétiqueGosseliesBelgium
| | - Camille Perazzolo
- Institut de Recherche Interdisciplinaire en Biologie Humaine et moléculaireUniversité Libre de BruxellesBrusselsBelgium
| | - Cindy Badoer
- Department of GeneticsHôpital ErasmeULB Center of Human GeneticsUniversité Libre de BruxellesBrusselsBelgium
| | - Valérie Jacquemin
- Institut de Recherche Interdisciplinaire en Biologie Humaine et moléculaireUniversité Libre de BruxellesBrusselsBelgium
| | - Julie Soblet
- Department of GeneticsHôpital ErasmeULB Center of Human GeneticsUniversité Libre de BruxellesBrusselsBelgium
- Hôpital Universitaire des Enfants Reine Fabiola (HUDERF)Université Libre de BruxellesBrusselsBelgium
| | - Isabelle Maystadt
- Centre de Génétique HumaineInstitut de Pathologie et de GénétiqueGosseliesBelgium
| | - Yusuf Tunca
- Department of Medical GeneticsGülhane Faculty of Medicine & Gülhane Training and Research HospitalUniversity of Health Sciences TurkeyAnkaraTurkey
| | | | | | | | | | - Anne Destree
- Centre de Génétique HumaineInstitut de Pathologie et de GénétiqueGosseliesBelgium
| | | | - Anna Jansen
- Universitair Ziekenhuis Brussel (UZ Brussel)Centrum Medische GeneticaUniversiteit Brussel (VUB)BrusselsBelgium
| | - Kathelijn Keymolen
- Universitair Ziekenhuis Brussel (UZ Brussel)Centrum Medische GeneticaUniversiteit Brussel (VUB)BrusselsBelgium
| | - Damien Lederer
- Centre de Génétique HumaineInstitut de Pathologie et de GénétiqueGosseliesBelgium
| | - Bart Loeys
- University and University Hospital of AntwerpAntwerpBelgium
| | | | - Stéphanie Moortgat
- Centre de Génétique HumaineInstitut de Pathologie et de GénétiqueGosseliesBelgium
| | - Geert Mortier
- University and University Hospital of AntwerpAntwerpBelgium
| | | | | | | | | | | | - Hilde Van Esch
- Center for Human GeneticsUniversity Hospitals LeuvenLeuvenBelgium
| | | | | | - Catheline Vilain
- Department of GeneticsHôpital ErasmeULB Center of Human GeneticsUniversité Libre de BruxellesBrusselsBelgium
- Hôpital Universitaire des Enfants Reine Fabiola (HUDERF)Université Libre de BruxellesBrusselsBelgium
| | | | | | - Alain Verloes
- Department of GeneticsAPHPRobert Debré University HospitalParisFrance
| | - Alec Aeby
- Hôpital Universitaire des Enfants Reine Fabiola (HUDERF)Université Libre de BruxellesBrusselsBelgium
| | - Nicolas Deconinck
- Hôpital Universitaire des Enfants Reine Fabiola (HUDERF)Université Libre de BruxellesBrusselsBelgium
| | | | - Isabelle Pirson
- Institut de Recherche Interdisciplinaire en Biologie Humaine et moléculaireUniversité Libre de BruxellesBrusselsBelgium
| | - Marc Abramowicz
- Institut de Recherche Interdisciplinaire en Biologie Humaine et moléculaireUniversité Libre de BruxellesBrusselsBelgium
- Department of Genetic Medicine and DevelopmentUniversity of GenevaGenèveSwitzerland
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24
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Siskos N, Stylianopoulou E, Skavdis G, Grigoriou ME. Molecular Genetics of Microcephaly Primary Hereditary: An Overview. Brain Sci 2021; 11:brainsci11050581. [PMID: 33946187 PMCID: PMC8145766 DOI: 10.3390/brainsci11050581] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
MicroCephaly Primary Hereditary (MCPH) is a rare congenital neurodevelopmental disorder characterized by a significant reduction of the occipitofrontal head circumference and mild to moderate mental disability. Patients have small brains, though with overall normal architecture; therefore, studying MCPH can reveal not only the pathological mechanisms leading to this condition, but also the mechanisms operating during normal development. MCPH is genetically heterogeneous, with 27 genes listed so far in the Online Mendelian Inheritance in Man (OMIM) database. In this review, we discuss the role of MCPH proteins and delineate the molecular mechanisms and common pathways in which they participate.
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25
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Vasquez-Limeta A, Loncarek J. Human centrosome organization and function in interphase and mitosis. Semin Cell Dev Biol 2021; 117:30-41. [PMID: 33836946 DOI: 10.1016/j.semcdb.2021.03.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 01/15/2023]
Abstract
Centrosomes were first described by Edouard Van Beneden and named and linked to chromosome segregation by Theodor Boveri around 1870. In the 1960-1980s, electron microscopy studies have revealed the remarkable ultrastructure of a centriole -- a nine-fold symmetrical microtubular assembly that resides within a centrosome and organizes it. Less than two decades ago, proteomics and genomic screens conducted in multiple species identified hundreds of centriole and centrosome core proteins and revealed the evolutionarily conserved nature of the centriole assembly pathway. And now, super resolution microscopy approaches and improvements in cryo-tomography are bringing an unparalleled nanoscale-detailed picture of the centriole and centrosome architecture. In this chapter, we summarize the current knowledge about the architecture of human centrioles. We discuss the structured organization of centrosome components in interphase, focusing on localization/function relationship. We discuss the process of centrosome maturation and mitotic spindle pole assembly in centriolar and acentriolar cells, emphasizing recent literature.
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Affiliation(s)
| | - Jadranka Loncarek
- Laboratory of Protein Dynamics and Signaling, NIH/NCI, Frederick 21702, MD, USA.
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26
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Burigotto M, Mattivi A, Migliorati D, Magnani G, Valentini C, Roccuzzo M, Offterdinger M, Pizzato M, Schmidt A, Villunger A, Maffini S, Fava LL. Centriolar distal appendages activate the centrosome-PIDDosome-p53 signalling axis via ANKRD26. EMBO J 2021; 40:e104844. [PMID: 33350486 PMCID: PMC7883297 DOI: 10.15252/embj.2020104844] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 10/22/2020] [Accepted: 11/04/2020] [Indexed: 01/08/2023] Open
Abstract
Centrosome amplification results into genetic instability and predisposes cells to neoplastic transformation. Supernumerary centrosomes trigger p53 stabilization dependent on the PIDDosome (a multiprotein complex composed by PIDD1, RAIDD and Caspase-2), whose activation results in cleavage of p53's key inhibitor, MDM2. Here, we demonstrate that PIDD1 is recruited to mature centrosomes by the centriolar distal appendage protein ANKRD26. PIDDosome-dependent Caspase-2 activation requires not only PIDD1 centrosomal localization, but also its autoproteolysis. Following cytokinesis failure, supernumerary centrosomes form clusters, which appear to be necessary for PIDDosome activation. In addition, in the context of DNA damage, activation of the complex results from a p53-dependent elevation of PIDD1 levels independently of centrosome amplification. We propose that PIDDosome activation can in both cases be promoted by an ANKRD26-dependent local increase in PIDD1 concentration close to the centrosome. Collectively, these findings provide a paradigm for how centrosomes can contribute to cell fate determination by igniting a signalling cascade.
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Affiliation(s)
- Matteo Burigotto
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Alessia Mattivi
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Daniele Migliorati
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Giovanni Magnani
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Chiara Valentini
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Michela Roccuzzo
- Advanced Imaging Core FacilityDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Martin Offterdinger
- Division of NeurobiochemistryBioopticsBiocenterMedical University of InnsbruckInnsbruckAustria
| | - Massimo Pizzato
- Laboratory of Virus‐Cell InteractionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
| | - Alexander Schmidt
- Proteomics Core FacilityBiozentrumUniversity of BaselBaselSwitzerland
| | - Andreas Villunger
- Division of Developmental ImmunologyBiocenterMedical University of InnsbruckInnsbruckAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
| | - Stefano Maffini
- Department of Mechanistic Cell BiologyMax Planck Institute of Molecular PhysiologyDortmundGermany
| | - Luca L Fava
- Armenise‐Harvard Laboratory of Cell DivisionDepartment of Cellular, Computational and Integrative Biology—CIBIOUniversity of TrentoTrentoItaly
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27
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Labat-de-Hoz L, Rubio-Ramos A, Casares-Arias J, Bernabé-Rubio M, Correas I, Alonso MA. A Model for Primary Cilium Biogenesis by Polarized Epithelial Cells: Role of the Midbody Remnant and Associated Specialized Membranes. Front Cell Dev Biol 2021; 8:622918. [PMID: 33585461 PMCID: PMC7873843 DOI: 10.3389/fcell.2020.622918] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
Primary cilia are solitary, microtubule-based protrusions surrounded by a ciliary membrane equipped with selected receptors that orchestrate important signaling pathways that control cell growth, differentiation, development and homeostasis. Depending on the cell type, primary cilium assembly takes place intracellularly or at the cell surface. The intracellular route has been the focus of research on primary cilium biogenesis, whereas the route that occurs at the cell surface, which we call the "alternative" route, has been much less thoroughly characterized. In this review, based on recent experimental evidence, we present a model of primary ciliogenesis by the alternative route in which the remnant of the midbody generated upon cytokinesis acquires compact membranes, that are involved in compartmentalization of biological membranes. The midbody remnant delivers part of those membranes to the centrosome in order to assemble the ciliary membrane, thereby licensing primary cilium formation. The midbody remnant's involvement in primary cilium formation, the regulation of its inheritance by the ESCRT machinery, and the assembly of the ciliary membrane from the membranes originally associated with the remnant are discussed in the context of the literature concerning the ciliary membrane, the emerging roles of the midbody remnant, the regulation of cytokinesis, and the role of membrane compartmentalization. We also present a model of cilium emergence during evolution, and summarize the directions for future research.
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Affiliation(s)
- Leticia Labat-de-Hoz
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
| | - Armando Rubio-Ramos
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
| | - Javier Casares-Arias
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
| | - Miguel Bernabé-Rubio
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
| | - Isabel Correas
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
- Department of Molecular Biology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Miguel A. Alonso
- Centro de Biología Molecular “Severo Ochoa”, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain
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28
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Park JE, Meng L, Ryu EK, Nagashima K, Baxa U, Bang JK, Lee KS. Autophosphorylation-induced self-assembly and STIL-dependent reinforcement underlie Plk4's ring-to-dot localization conversion around a human centriole. Cell Cycle 2020; 19:3419-3436. [PMID: 33323015 DOI: 10.1080/15384101.2020.1843772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Polo-like kinase 4 (Plk4) is a key regulator of centriole biogenesis. Studies have shown that Plk4 undergoes dynamic relocalization from a ring-like pattern around a centriole to a dot-like morphology at the procentriole assembly site and this event is central for inducing centriole biogenesis. However, the detailed mechanisms underlying Plk4's capacity to drive its symmetry-breaking ring-to-dot relocalization remain largely unknown. Here, we showed that Plk4 self-initiates this process in an autophosphorylation-dependent manner and that STIL, its downstream target, is not required for this event. Time-dependent analyses with mEOS-fused photoconvertible Plk4 revealed that a portion of ring-state Plk4 acquires a capacity, presumably through autophosphorylation, to linger around a centriole, ultimately generating a dot-state morphology. Interestingly, Plk4 WT, but not its catalytically inactive mutant, showed the ability to form a nanoscale spherical assembly in the cytosol of human cells or heterologous E. coli, demonstrating its autophosphorylation-dependent self-organizing capacity. At the biochemical level, Plk4 - unlike its N-terminal βTrCP degron motif - robustly autophosphorylated the PC3 SSTT motif within its C-terminal cryptic polo-box, an event critical for inducing its physical clustering. Additional in vivo experiments showed that although STIL was not required for Plk4's initial ring-to-dot conversion, coexpressed STIL greatly enhanced Plk4's ability to generate a spherical condensate and recruit Sas6, a major component of the centriolar cartwheel structure. We propose that Plk4's autophosphorylation-induced clustering is sufficient to induce its ring-to-dot localization conversion and that subsequently recruited STIL potentiates this process to generate a procentriole assembly body critical for Plk4-dependent centriole biogenesis.
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Affiliation(s)
- Jung-Eun Park
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Lingjun Meng
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute , Cheongju, Republic of Korea
| | - Kunio Nagashima
- Electron Microscopy Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research , Frederick, MD, USA
| | - Ulrich Baxa
- Electron Microscopy Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research , Frederick, MD, USA
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute , Cheongju, Republic of Korea
| | - Kyung S Lee
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
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29
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Bornens M. Centrosome organization and functions. Curr Opin Struct Biol 2020; 66:199-206. [PMID: 33338884 DOI: 10.1016/j.sbi.2020.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/23/2020] [Accepted: 11/03/2020] [Indexed: 02/06/2023]
Abstract
The centrosome, discovered near 1875, was named by Boveri when proposing the chromosomal theory of heredity. After a long eclipse, a considerable amount of molecular data has been accumulated on the centrosome and its biogenesis in the last 30 years, summarized regularly in excellent reviews. Major questions are still at stake in 2021 however, as we lack a comprehensive view of the centrosome functions. I will first try to see how progress towards a unified view of the role of centrosomes during evolution is possible, and then review recent data on only some of the many important questions raised by this organelle.
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Affiliation(s)
- Michel Bornens
- Institut Curie, PSL University, CNRS - UMR 144, 75005 Paris, France.
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30
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Takayasu BS, Martins IR, Garnique AM, Miyamoto S, Machado-Santelli GM, Uemi M, Onuki J. Biological effects of an oxyphytosterol generated by β-Sitosterol ozonization. Arch Biochem Biophys 2020; 696:108654. [DOI: 10.1016/j.abb.2020.108654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 12/12/2022]
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31
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Ahn JI, Park JE, Meng L, Zhang L, Kim TS, Kruhlak MJ, Kim BY, Lee KS. Phase separation of the Cep63•Cep152 complex underlies the formation of dynamic supramolecular self-assemblies at human centrosomes. Cell Cycle 2020; 19:3437-3457. [PMID: 33208041 DOI: 10.1080/15384101.2020.1843777] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The centrosome is a unique membraneless organelle that plays a pivotal role in the orderly progression of the cell cycle in animal cells. It has been shown that two pericentriolar scaffold proteins, Cep63 and Cep152, generate a heterotetrameric complex to self-assemble into a higher-order cylindrical architecture around a centriole. However, the mechanisms underlying how they reach their threshold concentrations in the vast intracellular space and generate a self-assembled architecture remain mysterious. Here we demonstrate that, like liquid-like assemblies, Cep63 and Cep152 cooperatively generate amorphous aggregates capable of undergoing dynamic turnover and inter-aggregate fusion in vivo and a significant level of internal rearrangemefnt within a condensate in vitro. Consistently, 1,6-hexanediol, a liquid-liquid phase separation disruptor, greatly diminished the ability of endogenous Cep63 and Cep152 to localize to centrosomes. Interestingly, a purified Cep63•Cep152 complex generated either a cylindrical structure or a vesicle-like hollow sphere in a spatially controlled manner. It also formed condensate-like solid spheres in the presence of a macromolecular crowder. At the molecular level, two hydrophobic motifs, one each from Cep63 and Cep152, were required for generating phase-separating condensates and a high molecular-weight assembly. Thus, we propose that the self-assembly of the Cep63•Cep152 complex is triggered by an intrinsic property of the complex undergoing density transition through the hydrophobic-motif-mediated phase separation. Abbreviations: PCM, pericentriolar material; LLPS, liquid-liquid phase separation; MW, molecular-weight; CLEM, correlative light and electron microscopy; WT, wild-type; CMV, cytomegalovirus; FRAP, fluorescence recovery after photobleaching; FITC, fluorescein isothiocyanate; PCR, polymerase chain reaction; 3D-SIM, three-dimensional structured illumination microscopy; DMEM, Dulbecco's Modified Eagle Medium; PEI Max, Polyethylenimine Max; PBS, phosphate-buffered saline; RT, room temperature; DAPI, 4', 6-diamidino-2-phenylindole; AOTF, acousto-optic tunable filter; LB, Luria broth; OD, optical density; IPTG, isopropyl β-D-1-thiogalactopyranoside; SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis.
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Affiliation(s)
- Jong Il Ahn
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Jung-Eun Park
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Lingjun Meng
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Liang Zhang
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Tae-Sung Kim
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Michael J Kruhlak
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Bo Yeon Kim
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology , Ochang, Republic of Korea
| | - Kyung S Lee
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
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32
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Ryder PV, Fang J, Lerit DA. centrocortin RNA localization to centrosomes is regulated by FMRP and facilitates error-free mitosis. J Cell Biol 2020; 219:211538. [PMID: 33196763 PMCID: PMC7716377 DOI: 10.1083/jcb.202004101] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 09/12/2020] [Accepted: 10/14/2020] [Indexed: 02/06/2023] Open
Abstract
Centrosomes are microtubule-organizing centers required for error-free mitosis and embryonic development. The microtubule-nucleating activity of centrosomes is conferred by the pericentriolar material (PCM), a composite of numerous proteins subject to cell cycle-dependent oscillations in levels and organization. In diverse cell types, mRNAs localize to centrosomes and may contribute to changes in PCM abundance. Here, we investigate the regulation of mRNA localization to centrosomes in the rapidly cycling Drosophila melanogaster embryo. We find that RNA localization to centrosomes is regulated during the cell cycle and developmentally. We identify a novel role for the fragile-X mental retardation protein in the posttranscriptional regulation of a model centrosomal mRNA, centrocortin (cen). Further, mistargeting cen mRNA is sufficient to alter cognate protein localization to centrosomes and impair spindle morphogenesis and genome stability.
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33
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Devi R, Pelletier L, Prosser SL. Charting the complex composite nature of centrosomes, primary cilia and centriolar satellites. Curr Opin Struct Biol 2020; 66:32-40. [PMID: 33130249 DOI: 10.1016/j.sbi.2020.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 10/24/2022]
Abstract
The centrosome and its associated structures of the primary cilium and centriolar satellites have been established as central players in a plethora of cellular processes ranging from cell division to cellular signaling. Consequently, defects in the structure or function of these organelles are linked to a diverse range of human diseases, including cancer, microcephaly, ciliopathies, and neurodegeneration. To understand the molecular mechanisms underpinning these diseases, the biology of centrosomes, cilia, and centriolar satellites has to be elucidated. Central to solving this conundrum is the identification, localization, and functional analysis of all the proteins that reside and interact with these organelles. In this review, we discuss the technological breakthroughs that are dissecting the molecular players of these enigmatic organelles with unprecedented spatial and temporal resolution.
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Affiliation(s)
- Raksha Devi
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, Ontario, M5G 1X5, Canada
| | - Laurence Pelletier
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, Ontario, M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, M5S 1A8, Canada.
| | - Suzanna L Prosser
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, Ontario, M5G 1X5, Canada.
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34
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Ng DCH, Richards DK, Mills RJ, Ho UY, Perks HL, Tucker CR, Voges HK, Pagan JK, Hudson JE. Centrosome Reduction Promotes Terminal Differentiation of Human Cardiomyocytes. Stem Cell Reports 2020; 15:817-826. [PMID: 32946803 PMCID: PMC7561510 DOI: 10.1016/j.stemcr.2020.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/18/2020] [Accepted: 08/18/2020] [Indexed: 01/10/2023] Open
Abstract
Centrosome reduction and redistribution of pericentriolar material (PCM) coincides with cardiomyocyte transitions to a post-mitotic and matured state. However, it is unclear whether centrosome changes are a cause or consequence of terminal differentiation. We validated that centrosomes were intact and functional in proliferative human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs), consistent with their immature phenotype. We generated acentrosomal hPSC-CMs, through pharmacological inhibition of centriole duplication, and showed that centrosome loss was sufficient to promote post-mitotic transitions and aspects of cardiomyocyte maturation. As Hippo kinases are activated during post-natal cardiac maturation, we pharmacologically activated the Hippo pathway using C19, which was sufficient to trigger centrosome disassembly and relocalization of PCM components to perinuclear membranes. This was due to specific activation of Hippo kinases, as direct inhibition of YAP-TEAD interactions with verteporfin had no effect on centrosome organization. This suggests that Hippo kinase-centrosome remodeling may play a direct role in cardiac maturation. Centrosomes are intact and functional in immature human cardiomyocytes Centrosome loss promotes maturation of human cardiomyocytes Centrosomes are returned with cell cycle reinitiation in post-natal cardiomyocytes Hippo kinases promote disassembly and redistribution of centrosomal proteins
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Affiliation(s)
- Dominic C H Ng
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia.
| | - Dominic K Richards
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia
| | - Richard J Mills
- Cardiac Bioengineering Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Uda Y Ho
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia
| | - Hannah L Perks
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia
| | - Callum R Tucker
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia
| | - Holly K Voges
- Cardiac Bioengineering Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Julia K Pagan
- School of Biomedical Sciences, University of Queensland, Saint Lucia, QLD, Australia
| | - James E Hudson
- Cardiac Bioengineering Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
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McConnachie DJ, Stow JL, Mallett AJ. Ciliopathies and the Kidney: A Review. Am J Kidney Dis 2020; 77:410-419. [PMID: 33039432 DOI: 10.1053/j.ajkd.2020.08.012] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/11/2020] [Indexed: 12/19/2022]
Abstract
Primary cilia are specialized sensory organelles that protrude from the apical surface of most cell types. During the past 2 decades, they have been found to play important roles in tissue development and signal transduction, with mutations in ciliary-associated proteins resulting in a group of diseases collectively known as ciliopathies. Many of these mutations manifest as renal ciliopathies, characterized by kidney dysfunction resulting from aberrant cilia or ciliary functions. This group of overlapping and genetically heterogeneous diseases includes polycystic kidney disease, nephronophthisis, and Bardet-Biedl syndrome as the main focus of this review. Renal ciliopathies are characterized by the presence of kidney cysts that develop due to uncontrolled epithelial cell proliferation, growth, and polarity, downstream of dysregulated ciliary-dependent signaling. Due to cystic-associated kidney injury and systemic inflammation, cases result in kidney failure requiring dialysis and transplantation. Of the handful of pharmacologic treatments available, none are curative. It is important to determine the molecular mechanisms that underlie the involvement of the primary cilium in cyst initiation, expansion, and progression for the development of novel and efficacious treatments. This review updates research progress in defining key genes and molecules central to ciliogenesis and renal ciliopathies.
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Affiliation(s)
- Dominique J McConnachie
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation Disease and Research, The University of Queensland, Brisbane, QLD, Australia
| | - Jennifer L Stow
- Kidney Health Service, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Andrew J Mallett
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation Disease and Research, The University of Queensland, Brisbane, QLD, Australia; Kidney Health Service, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia; Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia; KidGen Collaborative, Australian Genomics Health Alliance, Melbourne, VIC, Australia.
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36
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Mann M. The Origins of Organellar Mapping by Protein Correlation Profiling. Proteomics 2020; 20:e1900330. [PMID: 32744740 DOI: 10.1002/pmic.201900330] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/27/2020] [Indexed: 11/09/2022]
Abstract
Cells have a rich inner structure that is commonly explored by microscopy. Classical biochemical methods that break apart the cells and fractionate them along a gradient have now gotten a new lease on life through modern methods of mass spectrometry-based proteomics. Their common principle is to comprehensively measure all the proteins in each of the fractions. The resulting quantitative profile then associates thousands of proteins to their cellular homes. Here, the author recounts how protein correlation profiling, the first such technique, was conceived and how it was applied to answer intricate cell biological questions.
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Affiliation(s)
- Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany.,Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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Eichwald C, Ackermann M, Fraefel C. Mammalian orthoreovirus core protein μ2 reorganizes host microtubule-organizing center components. Virology 2020; 549:13-24. [PMID: 32805585 PMCID: PMC7402380 DOI: 10.1016/j.virol.2020.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/02/2020] [Accepted: 07/08/2020] [Indexed: 10/26/2022]
Abstract
Filamentous mammalian orthoreovirus (MRV) viral factories (VFs) are membrane-less cytosolic inclusions in which virus transcription, replication of dsRNA genome segments, and packaging of virus progeny into newly synthesized virus cores take place. In infected cells, the MRV μ2 protein forms punctae in the enlarged region of the filamentous VFs that are co-localized with γ-tubulin and resistant to nocodazole treatment, and permitted microtubule (MT)-extension, features common to MT-organizing centers (MTOCs). Using a previously established reconstituted VF model, we addressed the functions of MT-components and MTOCs concerning their roles in the formation of filamentous VFs. Indeed, the MTOC markers γ-tubulin and centrin were redistributed within the VF-like structures (VFLS) in a μ2-dependent manner. Moreover, the MT-nucleation centers significantly increased in numbers, and γ-tubulin was pulled-down in a binding assay when co-expressed with histidine-tagged-μ2 and μNS. Thus, μ2, by interaction with γ-tubulin, can modulate MTOCs localization and function according to viral needs.
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Affiliation(s)
- Catherine Eichwald
- Institute of Virology, University of Zurich, Winterthurerstrasse 266a, 8057 Zurich, Switzerland.
| | - Mathias Ackermann
- Institute of Virology, University of Zurich, Winterthurerstrasse 266a, 8057 Zurich, Switzerland.
| | - Cornel Fraefel
- Institute of Virology, University of Zurich, Winterthurerstrasse 266a, 8057 Zurich, Switzerland.
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Lee KS, Park JE, Il Ahn J, Wei Z, Zhang L. A self-assembled cylindrical platform for Plk4-induced centriole biogenesis. Open Biol 2020; 10:200102. [PMID: 32810424 PMCID: PMC7479937 DOI: 10.1098/rsob.200102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 05/28/2020] [Indexed: 12/19/2022] Open
Abstract
The centrosome, a unique membraneless multiprotein organelle, plays a pivotal role in various cellular processes that are critical for promoting cell proliferation. Faulty assembly or organization of the centrosome results in abnormal cell division, which leads to various human disorders including cancer, microcephaly and ciliopathy. Recent studies have provided new insights into the stepwise self-assembly of two pericentriolar scaffold proteins, Cep63 and Cep152, into a near-micrometre-scale higher-order structure whose architectural properties could be crucial for proper execution of its biological function. The construction of the scaffold architecture appears to be centrally required for tight control of a Ser/Thr kinase called Plk4, a key regulator of centriole duplication, which occurs precisely once per cell cycle. In this review, we will discuss a new paradigm for understanding how pericentrosomal scaffolds are self-organized into a new functional entity and how, on the resulting structural platform, Plk4 undergoes physico-chemical conversion to trigger centriole biogenesis.
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Affiliation(s)
- Kyung S. Lee
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Chen HY, Kelley RA, Li T, Swaroop A. Primary cilia biogenesis and associated retinal ciliopathies. Semin Cell Dev Biol 2020; 110:70-88. [PMID: 32747192 PMCID: PMC7855621 DOI: 10.1016/j.semcdb.2020.07.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/14/2020] [Accepted: 07/18/2020] [Indexed: 12/19/2022]
Abstract
The primary cilium is a ubiquitous microtubule-based organelle that senses external environment and modulates diverse signaling pathways in different cell types and tissues. The cilium originates from the mother centriole through a complex set of cellular events requiring hundreds of distinct components. Aberrant ciliogenesis or ciliary transport leads to a broad spectrum of clinical entities with overlapping yet highly variable phenotypes, collectively called ciliopathies, which include sensory defects and syndromic disorders with multi-organ pathologies. For efficient light detection, photoreceptors in the retina elaborate a modified cilium known as the outer segment, which is packed with membranous discs enriched for components of the phototransduction machinery. Retinopathy phenotype involves dysfunction and/or degeneration of the light sensing photoreceptors and is highly penetrant in ciliopathies. This review will discuss primary cilia biogenesis and ciliopathies, with a focus on the retina, and the role of CP110-CEP290-CC2D2A network. We will also explore how recent technologies can advance our understanding of cilia biology and discuss new paradigms for developing potential therapies of retinal ciliopathies.
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Affiliation(s)
- Holly Y Chen
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, MSC0610, 6 Center Drive, Bethesda, MD 20892, USA.
| | - Ryan A Kelley
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, MSC0610, 6 Center Drive, Bethesda, MD 20892, USA
| | - Tiansen Li
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, MSC0610, 6 Center Drive, Bethesda, MD 20892, USA
| | - Anand Swaroop
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, MSC0610, 6 Center Drive, Bethesda, MD 20892, USA.
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40
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Mc Fie M, Koneva L, Collins I, Coveney CR, Clube AM, Chanalaris A, Vincent TL, Bezbradica JS, Sansom SN, Wann AKT. Ciliary proteins specify the cell inflammatory response by tuning NFκB signalling, independently of primary cilia. J Cell Sci 2020; 133:jcs.239871. [PMID: 32503942 PMCID: PMC7358134 DOI: 10.1242/jcs.239871] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 05/21/2020] [Indexed: 12/17/2022] Open
Abstract
Complex inflammatory signalling cascades define the response to tissue injury but also control development and homeostasis, limiting the potential for these pathways to be targeted therapeutically. Primary cilia are subcellular regulators of cellular signalling, controlling how signalling is organized, encoded and, in some instances, driving or influencing pathogenesis. Our previous research revealed that disruption of ciliary intraflagellar transport (IFT), altered the cell response to IL-1β, supporting a putative link emerging between cilia and inflammation. Here, we show that IFT88 depletion affects specific cytokine-regulated behaviours, changing cytosolic NFκB translocation dynamics but leaving MAPK signalling unaffected. RNA-seq analysis indicates that IFT88 regulates one third of the genome-wide targets, including the pro-inflammatory genes Nos2, Il6 and Tnf. Through microscopy, we find altered NFκB dynamics are independent of assembly of a ciliary axoneme. Indeed, depletion of IFT88 inhibits inflammatory responses in the non-ciliated macrophage. We propose that ciliary proteins, including IFT88, KIF3A, TTBK2 and NPHP4, act outside of the ciliary axoneme to tune cytoplasmic NFκB signalling and specify the downstream cell response. This is thus a non-canonical function for ciliary proteins in shaping cellular inflammation. This article has an associated First Person interview with the first author of the paper. Summary: Ciliary proteins, acting independently of the ciliary axoneme, regulate the dynamics of cytosolic NFκB, but not other signalling pathways, defining an important subset of the inflammatory response.
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Affiliation(s)
- Megan Mc Fie
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK.,School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Lada Koneva
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Isabella Collins
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Clarissa R Coveney
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Aisling M Clube
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Anastasios Chanalaris
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Tonia L Vincent
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Jelena S Bezbradica
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Stephen N Sansom
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
| | - Angus K T Wann
- Kennedy Institute of Rheumatology Research, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford OX3 7FY, UK
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41
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Reciprocal Regulation between Primary Cilia and mTORC1. Genes (Basel) 2020; 11:genes11060711. [PMID: 32604881 PMCID: PMC7349257 DOI: 10.3390/genes11060711] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 12/11/2022] Open
Abstract
In quiescent cells, primary cilia function as a mechanosensor that converts mechanic signals into chemical activities. This unique organelle plays a critical role in restricting mechanistic target of rapamycin complex 1 (mTORC1) signaling, which is essential for quiescent cells to maintain their quiescence. Multiple mechanisms have been identified that mediate the inhibitory effect of primary cilia on mTORC1 signaling. These mechanisms depend on several tumor suppressor proteins localized within the ciliary compartment, including liver kinase B1 (LKB1), AMP-activated protein kinase (AMPK), polycystin-1, and polycystin-2. Conversely, changes in mTORC1 activity are able to affect ciliogenesis and stability indirectly through autophagy. In this review, we summarize recent advances in our understanding of the reciprocal regulation of mTORC1 and primary cilia.
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42
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Bozal-Basterra L, Gonzalez-Santamarta M, Muratore V, Bermejo-Arteagabeitia A, Da Fonseca C, Barroso-Gomila O, Azkargorta M, Iloro I, Pampliega O, Andrade R, Martín-Martín N, Branon TC, Ting AY, Rodríguez JA, Carracedo A, Elortza F, Sutherland JD, Barrio R. LUZP1, a novel regulator of primary cilia and the actin cytoskeleton, is a contributing factor in Townes-Brocks Syndrome. eLife 2020; 9:e55957. [PMID: 32553112 PMCID: PMC7363444 DOI: 10.7554/elife.55957] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 06/18/2020] [Indexed: 12/20/2022] Open
Abstract
Primary cilia are sensory organelles crucial for cell signaling during development and organ homeostasis. Cilia arise from centrosomes and their formation and function is governed by numerous factors. Through our studies on Townes-Brocks Syndrome (TBS), a rare disease linked to abnormal cilia formation in human fibroblasts, we uncovered the leucine-zipper protein LUZP1 as an interactor of truncated SALL1, a dominantly-acting protein causing the disease. Using TurboID proximity labeling and pulldowns, we show that LUZP1 associates with factors linked to centrosome and actin filaments. Here, we show that LUZP1 is a cilia regulator. It localizes around the centrioles and to actin cytoskeleton. Loss of LUZP1 reduces F-actin levels, facilitates ciliogenesis and alters Sonic Hedgehog signaling, pointing to a key role in cytoskeleton-cilia interdependency. Truncated SALL1 increases the ubiquitin proteasome-mediated degradation of LUZP1. Together with other factors, alterations in LUZP1 may be contributing to TBS etiology.
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Affiliation(s)
- Laura Bozal-Basterra
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - María Gonzalez-Santamarta
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Veronica Muratore
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Aitor Bermejo-Arteagabeitia
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Carolina Da Fonseca
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Orhi Barroso-Gomila
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Mikel Azkargorta
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
- CIBERehd, Instituto de Salud Carlos IIIMadridSpain
- ProteoRed-ISCIII, Instituto de Salud Carlos IIIMadridSpain
| | - Ibon Iloro
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
- CIBERehd, Instituto de Salud Carlos IIIMadridSpain
- ProteoRed-ISCIII, Instituto de Salud Carlos IIIMadridSpain
| | - Olatz Pampliega
- Department of Neurosciences, University of the Basque Country, Achucarro Basque Center for Neuroscience-UPV/EHULeioaSpain
| | - Ricardo Andrade
- Analytical & High Resolution Biomedical Microscopy Core Facility, University of the Basque Country (UPV/EHU)LeioaSpain
| | - Natalia Martín-Martín
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Tess C Branon
- Department of Chemistry, Massachusetts Institute of TechnologyCambridgeUnited States
- Departments of Genetics, Chemistry and Biology, Stanford UniversityStanfordUnited States
| | - Alice Y Ting
- Department of Chemistry, Massachusetts Institute of TechnologyCambridgeUnited States
- Departments of Genetics, Chemistry and Biology, Stanford UniversityStanfordUnited States
- Chan Zuckerberg BiohubSan FranciscoUnited States
| | - Jose A Rodríguez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU)LeioaSpain
| | - Arkaitz Carracedo
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
- CIBERONC, Instituto de Salud Carlos IIIMadridSpain
- Ikerbasque, Basque Foundation for ScienceBilbaoSpain
- Biochemistry and Molecular Biology Department, University of the Basque Country (UPV/EHU)BilbaoSpain
| | - Felix Elortza
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
- CIBERehd, Instituto de Salud Carlos IIIMadridSpain
- ProteoRed-ISCIII, Instituto de Salud Carlos IIIMadridSpain
| | - James D Sutherland
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
| | - Rosa Barrio
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology ParkDerioSpain
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Sullenberger C, Vasquez-Limeta A, Kong D, Loncarek J. With Age Comes Maturity: Biochemical and Structural Transformation of a Human Centriole in the Making. Cells 2020; 9:cells9061429. [PMID: 32526902 PMCID: PMC7349492 DOI: 10.3390/cells9061429] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/29/2020] [Accepted: 06/04/2020] [Indexed: 12/14/2022] Open
Abstract
Centrioles are microtubule-based cellular structures present in most human cells that build centrosomes and cilia. Proliferating cells have only two centrosomes and this number is stringently maintained through the temporally and spatially controlled processes of centriole assembly and segregation. The assembly of new centrioles begins in early S phase and ends in the third G1 phase from their initiation. This lengthy process of centriole assembly from their initiation to their maturation is characterized by numerous structural and still poorly understood biochemical changes, which occur in synchrony with the progression of cells through three consecutive cell cycles. As a result, proliferating cells contain three structurally, biochemically, and functionally distinct types of centrioles: procentrioles, daughter centrioles, and mother centrioles. This age difference is critical for proper centrosome and cilia function. Here we discuss the centriole assembly process as it occurs in somatic cycling human cells with a focus on the structural, biochemical, and functional characteristics of centrioles of different ages.
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Liu C, Shi Y, Li J, Liu X, Xiahou Z, Tan Z, Chen X, Li J. O-GlcNAcylation of myosin phosphatase targeting subunit 1 (MYPT1) dictates timely disjunction of centrosomes. J Biol Chem 2020; 295:7341-7349. [PMID: 32295844 PMCID: PMC7247298 DOI: 10.1074/jbc.ra119.012401] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 04/01/2020] [Indexed: 01/10/2023] Open
Abstract
The role of O-linked N-acetylglucosamine (O-GlcNAc) modification in the cell cycle has been enigmatic. Previously, both O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA) disruptions have been shown to derail the mitotic centrosome numbers, suggesting that mitotic O-GlcNAc oscillation needs to be in concert with mitotic progression to account for centrosome integrity. Here, using both chemical approaches and biological assays with HeLa cells, we attempted to address the underlying molecular mechanism and observed that incubation of the cells with the OGA inhibitor Thiamet-G strikingly elevates centrosomal distances, suggestive of premature centrosome disjunction. These aberrations could be overcome by inhibiting Polo-like kinase 1 (PLK1), a mitotic master kinase. PLK1 inactivation is modulated by the myosin phosphatase targeting subunit 1 (MYPT1)-protein phosphatase 1cβ (PP1cβ) complex. Interestingly, MYPT1 has been shown to be abundantly O-GlcNAcylated, and the modified residues have been detected in a recent O-GlcNAc-profiling screen utilizing chemoenzymatic labeling and bioorthogonal conjugation. We demonstrate here that MYPT1 is O-GlcNAcylated at Thr-577, Ser-585, Ser-589, and Ser-601, which antagonizes CDK1-dependent phosphorylation at Ser-473 and attenuates the association between MYPT1 and PLK1, thereby promoting PLK1 activity. We conclude that under high O-GlcNAc levels, PLK1 is untimely activated, conducive to inopportune centrosome separation and disruption of the cell cycle. We propose that too much O-GlcNAc is equally deleterious as too little O-GlcNAc, and a fine balance between the OGT/OGA duo is indispensable for successful mitotic divisions.
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Affiliation(s)
- Caifei Liu
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Yingxin Shi
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Jie Li
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Xuewen Liu
- Department of Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410006, China; Key Laboratory of Translational Radiation Oncology, Hunan 410006, China
| | - Zhikai Xiahou
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Zhongping Tan
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xing Chen
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking-Tsinghua Center for Life Sciences, Synthetic and Functional Biomolecules Center, and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Peking University, Beijing 100871, China
| | - Jing Li
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing 100048, China.
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45
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Requirement of the Cep57-Cep63 Interaction for Proper Cep152 Recruitment and Centriole Duplication. Mol Cell Biol 2020; 40:MCB.00535-19. [PMID: 32152252 DOI: 10.1128/mcb.00535-19] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/27/2020] [Indexed: 01/27/2023] Open
Abstract
Cep57 has been characterized as a component of a pericentriolar complex containing Cep63 and Cep152. Interestingly, Cep63 and Cep152 self-assemble into a pericentriolar cylindrical architecture, and this event is critical for the orderly recruitment of Plk4, a key regulator of centriole duplication. However, the way in which Cep57 interacts with the Cep63-Cep152 complex and contributes to the structure and function of Cep63-Cep152 self-assembly remains unknown. We demonstrate that Cep57 interacts with Cep63 through N-terminal motifs and associates with Cep152 via Cep63. Three-dimensional structured illumination microscopy (3D-SIM) analyses suggested that the Cep57-Cep63-Cep152 complex is concentrically arranged around a centriole in a Cep57-in and Cep152-out manner. Cep57 mutant cells defective in Cep63 binding exhibited improper Cep63 and Cep152 localization and impaired Sas6 recruitment for procentriole assembly, proving the significance of the Cep57-Cep63 interaction. Intriguingly, Cep63 fused to a microtubule (MT)-binding domain of Cep57 functioned in concert with Cep152 to assemble around stabilized MTs in vitro Thus, Cep57 plays a key role in architecting the Cep63-Cep152 assembly around centriolar MTs and promoting centriole biogenesis. This study may offer a platform to investigate how the organization and function of the pericentriolar architecture are altered by disease-associated mutations found in the Cep57-Cep63-Cep152 complex.
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Naslavsky N, Caplan S. Endocytic membrane trafficking in the control of centrosome function. Curr Opin Cell Biol 2020; 65:150-155. [PMID: 32143977 DOI: 10.1016/j.ceb.2020.01.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 12/15/2022]
Abstract
Until recently, endocytic trafficking and its regulators were thought to function almost exclusively on membrane-bound organelles and/or vesicles containing a lipid bilayer. Recent studies have demonstrated that endocytic regulatory proteins play much wider roles in trafficking regulation and influence a variety of nonendocytic pathways, including trafficking to/from mitochondria and peroxisomes. Moreover, new studies also suggest that endocytic regulators also control trafficking to and from cellular organelles that lack membranes, such as the centrosome. Although endocytic membrane trafficking (EMT) clearly impacts pathways downstream of the centrosome, such as ciliogenesis (including transport to and from cilia), mitotic spindle formation, and cytokinesis, relatively few studies have focused on the growing role for EMT more directly on centrosome biogenesis, maintenance and control throughout cell cycle, and centrosome duplication. Indeed, a growing number of endocytic regulatory proteins have been implicated in centrosome regulation, including various Rab proteins (among them Rab11) and the leucine-rich repeat kinase 2. In this review, we will examine the relationship between centrosomes and EMT, focusing primarily on how EMT directly influences the centrosome.
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Affiliation(s)
- Naava Naslavsky
- The Department of Biochemistry and Molecular Biology and Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, United States
| | - Steve Caplan
- The Department of Biochemistry and Molecular Biology and Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, United States.
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Yang X, Li W, Zhang S, Wu D, Jiang X, Tan R, Niu X, Wang Q, Wu X, Liu Z, Chen L, Qin J, Su B. PLK4 deubiquitination by Spata2-CYLD suppresses NEK7-mediated NLRP3 inflammasome activation at the centrosome. EMBO J 2020; 39:e102201. [PMID: 31762063 PMCID: PMC6960439 DOI: 10.15252/embj.2019102201] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 10/13/2019] [Accepted: 10/21/2019] [Indexed: 12/11/2022] Open
Abstract
The innate immune sensor NLRP3 assembles an inflammasome complex with NEK7 and ASC to activate caspase-1 and drive the maturation of proinflammatory cytokines IL-1β and IL-18. NLRP3 inflammasome activity must be tightly controlled, as its over-activation is involved in the pathogenesis of inflammatory diseases. Here, we show that NLRP3 inflammasome activation is suppressed by a centrosomal protein Spata2. Spata2 deficiency enhances NLRP3 inflammasome activity both in the macrophages and in an animal model of peritonitis. Mechanistically, Spata2 recruits the deubiquitinase CYLD to the centrosome for deubiquitination of polo-like kinase 4 (PLK4), the master regulator of centrosome duplication. Deubiquitination of PLK4 facilitates its binding to and phosphorylation of NEK7 at Ser204. NEK7 phosphorylation in turn attenuates NEK7 and NLRP3 interaction, which is required for NLRP3 inflammasome activation. Pharmacological or shRNA-mediated inhibition of PLK4, or mutation of the NEK7 Ser204 phosphorylation site, augments NEK7 interaction with NLRP3 and causes increased NLRP3 inflammasome activation. Our study unravels a novel centrosomal regulatory pathway of inflammasome activation and may provide new therapeutic targets for the treatment of NLRP3-associated inflammatory diseases.
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Affiliation(s)
- Xiao‐Dong Yang
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Wenguo Li
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Shuangyan Zhang
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Dandan Wu
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Xiaoli Jiang
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Rong Tan
- Xiangya HospitalCentral South UniversityChangshaChina
| | - Xiaoyin Niu
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Qijun Wang
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Xuefeng Wu
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Zhiduo Liu
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
| | - Lin‐Feng Chen
- Department of BiochemistryUniversity of Illinois at Urbana‐ChampaignUrbanaILUSA
| | - Jun Qin
- Department of Biochemistry and Molecular BiologyBaylor College of MedicineHoustonTXUSA
| | - Bing Su
- Shanghai Jiao Tong University School of Medicine‐Yale Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina§
- Yale University Institute for Immune MetabolismShanghai Jiao Tong University School of MedicineShanghaiChina
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Brand F, Förster A, Christians A, Bucher M, Thomé CM, Raab MS, Westphal M, Pietsch T, von Deimling A, Reifenberger G, Claus P, Hentschel B, Weller M, Weber RG. FOCAD loss impacts microtubule assembly, G2/M progression and patient survival in astrocytic gliomas. Acta Neuropathol 2020; 139:175-192. [PMID: 31473790 DOI: 10.1007/s00401-019-02067-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/12/2019] [Accepted: 08/19/2019] [Indexed: 12/23/2022]
Abstract
In search of novel genes associated with glioma pathogenesis, we have previously shown frequent deletions of the KIAA1797/FOCAD gene in malignant gliomas, and a tumor suppressor function of the encoded focadhesin impacting proliferation and migration of glioma cells in vitro and in vivo. Here, we examined an association of reduced FOCAD gene copy number with overall survival of patients with astrocytic gliomas, and addressed the molecular mechanisms that govern the suppressive effect of focadhesin on glioma growth. FOCAD loss was associated with inferior outcome in patients with isocitrate dehydrogenase 1 or 2 (IDH)-mutant astrocytic gliomas of WHO grades II-IV. Multivariate analysis considering age at diagnosis as well as IDH mutation, MGMT promoter methylation, and CDKN2A/B homozygous deletion status confirmed reduced FOCAD gene copy number as a prognostic factor for overall survival. Using a yeast two-hybrid screen and pull-down assays, tubulin beta-6 and other tubulin family members were identified as novel focadhesin-interacting partners. Tubulins and focadhesin co-localized to centrosomes where focadhesin was enriched in proximity to centrioles. Focadhesin was recruited to microtubules via its interaction partner SLAIN motif family member 2 and reduced microtubule assembly rates, possibly explaining the focadhesin-dependent decrease in cell migration. During the cell cycle, focadhesin levels peaked in G2/M phase and influenced time-dependent G2/M progression potentially via polo like kinase 1 phosphorylation, providing a possible explanation for focadhesin-dependent cell growth reduction. We conclude that FOCAD loss may promote biological aggressiveness and worsen clinical outcome of diffuse astrocytic gliomas by enhancing microtubule assembly and accelerating G2/M phase progression.
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Affiliation(s)
- Frank Brand
- Department of Human Genetics OE 6300, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Alisa Förster
- Department of Human Genetics OE 6300, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Anne Christians
- Department of Human Genetics OE 6300, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Martin Bucher
- Department of Human Genetics OE 6300, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Carina M Thomé
- Neurology Clinic and National Center for Tumor Diseases, Clinical Cooperation Unit Neurooncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Marc S Raab
- Department of Internal Medicine V, Hematology, Oncology and Rheumatology, University of Heidelberg, Heidelberg, Germany
- Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Manfred Westphal
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Torsten Pietsch
- Department of Neuropathology, University of Bonn Medical School, Bonn, Germany
| | - Andreas von Deimling
- Department of Neuropathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Clinical Cooperation Unit Neuropathology, German Consortium for Translational Cancer Research (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Guido Reifenberger
- Department of Neuropathology, Heinrich-Heine-University, Düsseldorf, Germany
- German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Claus
- Department of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany
- Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Bettina Hentschel
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
| | - Michael Weller
- Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Ruthild G Weber
- Department of Human Genetics OE 6300, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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Abstract
The centrosome apparatus is vital for spindle assembly and chromosome segregation during mitotic divisions. Its replication, disjunction and separation have to be fine-tuned in space and time. A multitude of post-translational modifications (PTMs) have been implicated in centrosome modulation, including phosphorylation, ubiquitination and acetylation. Among them is the emerging O-linked N-acetylglucosamine (O-GlcNAc) modification. This quintessential PTM has a sole writer, O-GlcNAc transferase (OGT), and the only eraser, O-GlcNAcase (OGA). O-GlcNAc couples glucose metabolism with signal transduction and forms a yin-yang relationship with phosphorylation. Evidence from proteomic studies as well as single protein investigations has pinpointed a role of O-GlcNAc in centrosome number and separation, centriole number and distribution, as well as the cilia machinery emanating from the centrosomes. Herein we review our current understanding of the sweet modification embedded in centrosome dynamics and speculate that more molecular details will be unveiled in the future.
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Wang P, Xia J, Zhang L, Zhao S, Li S, Wang H, Cheng S, Li H, Yin W, Pei D, Shu X. SNX17 Recruits USP9X to Antagonize MIB1-Mediated Ubiquitination and Degradation of PCM1 during Serum-Starvation-Induced Ciliogenesis. Cells 2019; 8:cells8111335. [PMID: 31671755 PMCID: PMC6912348 DOI: 10.3390/cells8111335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/15/2019] [Accepted: 10/27/2019] [Indexed: 12/12/2022] Open
Abstract
Centriolar satellites are non-membrane cytoplasmic granules that deliver proteins to centrosome during centrosome biogenesis and ciliogenesis. Centriolar satellites are highly dynamic during cell cycle or ciliogenesis and how they are regulated remains largely unknown. We report here that sorting nexin 17 (SNX17) regulates the homeostasis of a subset of centriolar satellite proteins including PCM1, CEP131, and OFD1 during serum-starvation-induced ciliogenesis. Mechanistically, SNX17 recruits the deubiquitinating enzyme USP9X to antagonize the mindbomb 1 (MIB1)-induced ubiquitination and degradation of PCM1. SNX17 deficiency leads to enhanced degradation of USP9X as well as PCM1 and disrupts ciliogenesis upon serum starvation. On the other hand, SNX17 is dispensable for the homeostasis of PCM1 and USP9X in serum-containing media. These findings reveal a SNX17/USP9X mediated pathway essential for the homeostasis of centriolar satellites under serum starvation, and provide insight into the mechanism of USP9X in ciliogenesis, which may lead to a better understating of USP9X-deficiency-related human diseases such as X-linked mental retardation and neurodegenerative diseases.
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Affiliation(s)
- Pengtao Wang
- School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
- Hefei Institute of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
| | - Jianhong Xia
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Leilei Zhang
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Shaoyang Zhao
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Shengbiao Li
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Haiyun Wang
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Shan Cheng
- Hefei Institute of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
| | - Heying Li
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Wenguang Yin
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
| | - Duanqing Pei
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory (GRMH-GDL), Guangzhou 510005, China.
| | - Xiaodong Shu
- CAS Key Laboratory of Regenerative Biology, South China Institutes for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou 510530, China.
- Hefei Institute of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory (GRMH-GDL), Guangzhou 510005, China.
- Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Medical University, Guangzhou 511436, China.
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