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Maeda M, Arakawa M, Komatsu Y, Saito K. Small GTPase ActIvitY ANalyzing (SAIYAN) system: A method to detect GTPase activation in living cells. J Cell Biol 2024; 223:e202403179. [PMID: 39101946 PMCID: PMC11303508 DOI: 10.1083/jcb.202403179] [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: 03/28/2024] [Revised: 06/10/2024] [Accepted: 07/11/2024] [Indexed: 08/06/2024] Open
Abstract
Small GTPases are essential in various cellular signaling pathways, and detecting their activation within living cells is crucial for understanding cellular processes. The current methods for detecting GTPase activation using fluorescent proteins rely on the interaction between the GTPase and its effector. Consequently, these methods are not applicable to factors, such as Sar1, where the effector also functions as a GTPase-activating protein. Here, we present a novel method, the Small GTPase ActIvitY ANalyzing (SAIYAN) system, for detecting the activation of endogenous small GTPases via fluorescent signals utilizing a split mNeonGreen system. We demonstrated Sar1 activation at the endoplasmic reticulum (ER) exit site and successfully detected its activation state in various cellular conditions. Utilizing the SAIYAN system in collagen-secreting cells, we discovered activated Sar1 localized both at the ER exit sites and ER-Golgi intermediate compartment (ERGIC) regions. Additionally, impaired collagen secretion confined the activated Sar1 at the ER exit sites, implying the importance of Sar1 activation through the ERGIC in collagen secretion.
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Affiliation(s)
- Miharu Maeda
- Department of Biological Informatics and Experimental Therapeutics, Graduate School of Medicine, Akita University, Akita, Japan
| | - Masashi Arakawa
- Department of Biological Informatics and Experimental Therapeutics, Graduate School of Medicine, Akita University, Akita, Japan
| | - Yukie Komatsu
- Department of Biological Informatics and Experimental Therapeutics, Graduate School of Medicine, Akita University, Akita, Japan
| | - Kota Saito
- Department of Biological Informatics and Experimental Therapeutics, Graduate School of Medicine, Akita University, Akita, Japan
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2
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Zahoor M, Dong Y, Preussner M, Reiterer V, Shameen Alam S, Haun M, Horzum U, Frey Y, Hajdu R, Geley S, Cormier-Daire V, Heyd F, Jerome-Majewska LA, Farhan H. The unfolded protein response regulates ER exit sites via SNRPB-dependent RNA splicing and contributes to bone development. EMBO J 2024; 43:4228-4247. [PMID: 39160274 PMCID: PMC11445528 DOI: 10.1038/s44318-024-00208-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 07/08/2024] [Accepted: 07/24/2024] [Indexed: 08/21/2024] Open
Abstract
Splicing and endoplasmic reticulum (ER)-proteostasis are two key processes that ultimately regulate the functional proteins that are produced by a cell. However, the extent to which these processes interact remains poorly understood. Here, we identify SNRPB and other components of the Sm-ring, as targets of the unfolded protein response and novel regulators of export from the ER. Mechanistically, The Sm-ring regulates the splicing of components of the ER export machinery, including Sec16A, a component of ER exit sites. Loss of function of SNRPB is causally linked to cerebro-costo-mandibular syndrome (CCMS), a genetic disease characterized by bone defects. We show that heterozygous deletion of SNRPB in mice resulted in bone defects reminiscent of CCMS and that knockdown of SNRPB delays the trafficking of type-I collagen. Silencing SNRPB inhibited osteogenesis in vitro, which could be rescued by overexpression of Sec16A. This rescue indicates that the role of SNRPB in osteogenesis is linked to its effects on ER-export. Finally, we show that SNRPB is a target for the unfolded protein response, which supports a mechanistic link between the spliceosome and ER-proteostasis. Our work highlights components of the Sm-ring as a novel node in the proteostasis network, shedding light on CCMS pathophysiology.
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Affiliation(s)
- Muhammad Zahoor
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
- Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
| | - Yanchen Dong
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC, H4A 3J1, Canada
- Department of Human Genetics, McGill University, Montreal, QC, H3A 0G1, Canada
| | - Marco Preussner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Laboratory of RNA Biochemistry, Takustrasse 6, 14195, Berlin, Germany
| | - Veronika Reiterer
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Sabrina Shameen Alam
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC, H4A 3J1, Canada
- Department of Human Genetics, McGill University, Montreal, QC, H3A 0G1, Canada
| | - Margot Haun
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Utku Horzum
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Yannick Frey
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Renata Hajdu
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Stephan Geley
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria
| | - Valerie Cormier-Daire
- Clinical Genetics Department, Université de Paris, INSERM UMR 1163, Imagine Institute, Necker Enfants Malades Hospital, Paris, France
| | - Florian Heyd
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Laboratory of RNA Biochemistry, Takustrasse 6, 14195, Berlin, Germany
| | - Loydie A Jerome-Majewska
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC, H4A 3J1, Canada.
- Department of Human Genetics, McGill University, Montreal, QC, H3A 0G1, Canada.
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, H3A 2B2, Canada.
- Department of Pediatrics, McGill University, Montreal, QC, H4A 3J1, Canada.
| | - Hesso Farhan
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
- Institute of Pathophysiology, Medical University of Innsbruck, Innrain 80, 6020, Innsbruck, Austria.
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3
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Tobias ES, Lucas-Herald AK, Sagar D, Montezano AC, Rios FJ, De Lucca Camargo L, Hamilton G, Gazdagh G, Diver LA, Williams N, Herzyk P, Touyz RM, Greenfield A, McGowan R, Ahmed SF. SEC31A may be associated with pituitary hormone deficiency and gonadal dysgenesis. Endocrine 2024; 84:345-349. [PMID: 38400880 DOI: 10.1007/s12020-024-03701-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/14/2024] [Indexed: 02/26/2024]
Abstract
PURPOSE Disorders/differences of sex development (DSD) result from variants in many different human genes but, frequently, have no detectable molecular cause. METHODS Detailed clinical and genetic phenotyping was conducted on a family with three children. A Sec31a animal model and functional studies were used to investigate the significance of the findings. RESULTS By trio whole-exome DNA sequencing we detected a heterozygous de novo nonsense SEC31A variant, in three children of healthy non-consanguineous parents. The children had different combinations of disorders that included complete gonadal dysgenesis and multiple pituitary hormone deficiency. SEC31A encodes a component of the COPII coat protein complex, necessary for intracellular anterograde vesicle-mediated transport between the endoplasmic reticulum (ER) and Golgi. CRISPR-Cas9 targeted knockout of the orthologous Sec31a gene region resulted in early embryonic lethality in homozygous mice. mRNA expression of ER-stress genes ATF4 and CHOP was increased in the children, suggesting defective protein transport. The pLI score of the gene, from gnomAD data, is 0.02. CONCLUSIONS SEC31A might underlie a previously unrecognised clinical syndrome comprising gonadal dysgenesis, multiple pituitary hormone deficiencies, dysmorphic features and developmental delay. However, a variant that remains undetected, in a different gene, may alternatively be causal in this family.
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Affiliation(s)
- Edward S Tobias
- West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building, Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF, UK.
- Academic Unit of Medical Genetics and Clinical Pathology, University of Glasgow, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK.
| | - Angela K Lucas-Herald
- Developmental Endocrinology Research Group, School of Medicine, Dentistry and Nursing, University of Glasgow, Royal Hospital for Children, 1345 Govan Road, Glasgow, G51 4TF, UK
| | - Danielle Sagar
- MRC Mammalian Genetics Unit, Harwell Institute, Harwell Campus, Oxfordshire, OX11 0RD, UK
| | - Augusto C Montezano
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Centre for Research Excellence, University of Glasgow, 126 University Avenue, Glasgow, G12 8TA, UK
- Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - Francisco J Rios
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Centre for Research Excellence, University of Glasgow, 126 University Avenue, Glasgow, G12 8TA, UK
| | - Livia De Lucca Camargo
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Centre for Research Excellence, University of Glasgow, 126 University Avenue, Glasgow, G12 8TA, UK
- Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - Graham Hamilton
- Glasgow Polyomics, College of Medical Veterinary and Life Sciences, Garscube Estate, Switchback Rd, Glasgow, G61 1BD, UK
| | - Gabriella Gazdagh
- West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building, Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF, UK
- Academic Unit of Medical Genetics and Clinical Pathology, University of Glasgow, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK
| | - Louise A Diver
- West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building, Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF, UK
| | - Nicola Williams
- West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building, Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF, UK
| | - Pawel Herzyk
- Glasgow Polyomics, College of Medical Veterinary and Life Sciences, Garscube Estate, Switchback Rd, Glasgow, G61 1BD, UK
- Institute of Molecular Cell and Systems Biology, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Centre for Research Excellence, University of Glasgow, 126 University Avenue, Glasgow, G12 8TA, UK
- Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - Andy Greenfield
- MRC Mammalian Genetics Unit, Harwell Institute, Harwell Campus, Oxfordshire, OX11 0RD, UK
- Nuffield Department of Women's & Reproductive Health, Institute of Reproductive Sciences, University of Oxford, Oxford, UK
| | - Ruth McGowan
- West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building, Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF, UK
- Developmental Endocrinology Research Group, School of Medicine, Dentistry and Nursing, University of Glasgow, Royal Hospital for Children, 1345 Govan Road, Glasgow, G51 4TF, UK
| | - S Faisal Ahmed
- Developmental Endocrinology Research Group, School of Medicine, Dentistry and Nursing, University of Glasgow, Royal Hospital for Children, 1345 Govan Road, Glasgow, G51 4TF, UK
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Quirion L, Robert A, Boulais J, Huang S, Bernal Astrain G, Strakhova R, Jo CH, Kherdjemil Y, Faubert D, Thibault MP, Kmita M, Baskin JM, Gingras AC, Smith MJ, Côté JF. Mapping the global interactome of the ARF family reveals spatial organization in cellular signaling pathways. J Cell Sci 2024; 137:jcs262140. [PMID: 38606629 PMCID: PMC11166204 DOI: 10.1242/jcs.262140] [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: 03/23/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024] Open
Abstract
The ADP-ribosylation factors (ARFs) and ARF-like (ARL) GTPases serve as essential molecular switches governing a wide array of cellular processes. In this study, we used proximity-dependent biotin identification (BioID) to comprehensively map the interactome of 28 out of 29 ARF and ARL proteins in two cellular models. Through this approach, we identified ∼3000 high-confidence proximal interactors, enabling us to assign subcellular localizations to the family members. Notably, we uncovered previously undefined localizations for ARL4D and ARL10. Clustering analyses further exposed the distinctiveness of the interactors identified with these two GTPases. We also reveal that the expression of the understudied member ARL14 is confined to the stomach and intestines. We identified phospholipase D1 (PLD1) and the ESCPE-1 complex, more precisely, SNX1, as proximity interactors. Functional assays demonstrated that ARL14 can activate PLD1 in cellulo and is involved in cargo trafficking via the ESCPE-1 complex. Overall, the BioID data generated in this study provide a valuable resource for dissecting the complexities of ARF and ARL spatial organization and signaling.
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Affiliation(s)
- Laura Quirion
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
- Molecular Biology Programs, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Amélie Robert
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
| | - Jonathan Boulais
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
| | - Shiying Huang
- Department of Chemistry and Chemical Biology and Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
| | - Gabriela Bernal Astrain
- Molecular Biology Programs, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Regina Strakhova
- Molecular Biology Programs, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Chang Hwa Jo
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Yacine Kherdjemil
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
| | - Denis Faubert
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
| | | | - Marie Kmita
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
- Molecular Biology Programs, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Department of Medicine, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Department of Experimental Medicine, McGill University, Montréal, QC H3G 2M1, Canada
| | - Jeremy M. Baskin
- Department of Chemistry and Chemical Biology and Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Matthew J. Smith
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Jean-François Côté
- Montreal Clinical Research Institute (IRCM), Montréal, QC H2W 1R7, Canada
- Molecular Biology Programs, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Department of Medicine, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Department of Anatomy and Cell Biology, McGill University, Montréal, QC H3A 0C7, Canada
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5
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Quirion L, Robert A, Boulais J, Huang S, Bernal Astrain G, Strakhova R, Jo CH, Kherdjemil Y, Thibault MP, Faubert D, Kmita M, Baskin JM, Gingras AC, Smith MJ, Cote JF. Mapping the global interactome of the ARF family reveals spatial organization in cellular signaling pathways. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.03.01.530598. [PMID: 36909472 PMCID: PMC10002736 DOI: 10.1101/2023.03.01.530598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The ADP-ribosylation factors (ARFs) and ARF-like (ARLs) GTPases serve as essential molecular switches governing a wide array of cellular processes. In this study, we utilized proximity-dependent biotin identification (BioID) to comprehensively map the interactome of 28 out of 29 ARF and ARL proteins in two cellular models. Through this approach, we identified ~3000 high-confidence proximal interactors, enabling us to assign subcellular localizations to the family members. Notably, we uncovered previously undefined localizations for ARL4D and ARL10. Clustering analyses further exposed the distinctiveness of the interactors identified with these two GTPases. We also reveal that the expression of the understudied member ARL14 is confined to the stomach and intestines. We identified phospholipase D1 (PLD1) and the ESCPE-1 complex, more precisely SNX1, as proximity interactors. Functional assays demonstrated that ARL14 can activate PLD1 in cellulo and is involved in cargo trafficking via the ESCPE-1 complex. Overall, the BioID data generated in this study provide a valuable resource for dissecting the complexities of ARF and ARL spatial organization and signaling.
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6
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Bouroutzika E, Proikakis S, Theodosiadou EK, Vougas K, Katsafadou AI, Tsangaris GT, Valasi I. Proteomics Analysis of Pregnancy in Ewes under Heat Stress Conditions and Melatonin Administration. Animals (Basel) 2024; 14:400. [PMID: 38338042 PMCID: PMC10854642 DOI: 10.3390/ani14030400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Melatonin is an indoleamine with broad spectrum properties that acts as a regulator of antioxidant and immune response in organisms. In our previous studies, melatonin improved redox status and inflammatory response in pregnant ewes under heat stress conditions. In the present study, using proteomics, the proteins regulated by melatonin during different stages of pregnancy and lambing were assessed. Twenty-two ewes equally divided into two groups, the melatonin (M) (n = 11) and control (C) group (n = 11), participated in the study and were exposed to heat stress during the first months of pregnancy. In the M group, melatonin implants were administered throughout pregnancy, every 40 days, until parturition (a total of four implants per ewe). Blood samples were collected at the beginning of the study simultaneously with the administration of the first melatonin implant (blood samples M1, C1), mating (M2, C2), second implant (M3, C3), fourth implant (M4, C4) and parturition (M5, C5), and MALDI-TOF analysis was performed. The results revealed the existence of 42 extra proteins in samples M2, M3 and M4 and 53 in M5 (sample at parturition) that are linked to melatonin. The biological processes of these proteins refer to boosted immune response, the alleviation of oxidative and endoplasmic reticulum stress, energy metabolism, the protection of the maternal organism and embryo development. This proteomics analysis indicates that melatonin regulates protective mechanisms and controls cell proliferation under exogenous or endogenous stressful stimuli during pregnancy and parturition.
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Affiliation(s)
- Efterpi Bouroutzika
- Faculty of Veterinary Science, University of Thessaly, 43131 Karditsa, Greece; (E.B.); (E.K.T.)
| | - Stavros Proikakis
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece;
| | | | - Konstantinos Vougas
- Proteomics Research Unit, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (K.V.), (G.T.T.)
| | | | - George T. Tsangaris
- Proteomics Research Unit, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (K.V.), (G.T.T.)
| | - Irene Valasi
- Faculty of Veterinary Science, University of Thessaly, 43131 Karditsa, Greece; (E.B.); (E.K.T.)
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7
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Minale EMP, De Falco A, Agolini E, Novelli A, Russo R, Andolfo I, Iolascon A, Piscopo C. First Case of a Dominant De Novo SEC23A Mutation with Neurological and Psychiatric Features: New Insights into Cranio-Lenticulo-Sutural Dysplasia with Literature Review. Genes (Basel) 2024; 15:130. [PMID: 38275611 PMCID: PMC10815465 DOI: 10.3390/genes15010130] [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: 12/22/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024] Open
Abstract
Cranio-lenticulo-sutural dysplasia (CLSD, OMIM #607812) is a rare genetic condition characterized by late-closing fontanels, skeletal defects, dysmorphisms, and congenital cataracts that are caused by bi-allelic or monoallelic variants in the SEC23A gene. Autosomal recessive inheritance (AR-CLSD) has been extensively documented in several cases with homozygous or compound heterozygous variants in SEC23A, whereas autosomal dominant inheritance (AD-CLSD) involving heterozygous inherited variants has been reported just in three patients. The SEC23A gene encodes for one of the main components of a protein coat complex known as coat-protein-complex II (COPII), responsible for the generation of the envelope of the vesicles exported from the endoplasmic reticulum (ER) toward the Golgi complex (GC). AR-CLSD and AD-CLSD exhibit common features, although each form also presents distinctive and peculiar characteristics. Herein, we describe a rare case of a 10-year-old boy with a history of an anterior fontanel that closed only at the age of 9. The patient presents with short proportionate stature, low weight, and neurological impairment, including intellectual disability, global developmental delay, abnormal coordination, dystonia, and motor tics, along with dysmorphisms such as a wide anterior fontanel, hypertelorism, frontal bossing, broad nose, high-arched palate, and micrognathia. Trio clinical exome was performed, and a de novo heterozygous missense variant in SEC23A (p.Arg716Cys) was identified. This is the first reported case of CLSD caused by a de novo heterozygous missense variant in SEC23A presenting specific neurological manifestations never described before. For the first time, we have conducted a comprehensive phenotype-genotype correlation using data from our patient and the eight most well-documented cases in the literature. Our work has allowed us to identify the main specific and characteristic signs of both forms of CLSD (AR-CLSD, AD CLSD), offering valuable insights that can guide physicians in the diagnostic process. Notably, detailed descriptions of neurological features such as intellectual disability, global developmental delay, and motor impairment have not been documented before. Furthermore, our literature overview is crucial in the current landscape of CLSD due to the absence of guidelines for the clinical diagnosis and proper follow-up of these patients, especially during childhood.
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Affiliation(s)
- Elia Marco Paolo Minale
- U.O.C. Genetica Medica, A.O.U. Federico II, 80131 Naples, Italy; (E.M.P.M.); (A.D.F.); (A.I.)
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, 80131 Naples, Italy; (R.R.); (I.A.)
| | - Alessandro De Falco
- U.O.C. Genetica Medica, A.O.U. Federico II, 80131 Naples, Italy; (E.M.P.M.); (A.D.F.); (A.I.)
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, 80131 Naples, Italy; (R.R.); (I.A.)
| | - Emanuele Agolini
- Laboratory of Medical Genetics, Ospedale Pediatrico Bambino Gesù, IRCCS, 00165 Rome, Italy; (E.A.); (A.N.)
| | - Antonio Novelli
- Laboratory of Medical Genetics, Ospedale Pediatrico Bambino Gesù, IRCCS, 00165 Rome, Italy; (E.A.); (A.N.)
| | - Roberta Russo
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, 80131 Naples, Italy; (R.R.); (I.A.)
- CEINGE Biotecnologie Avanzate, 80145 Naples, Italy
| | - Immacolata Andolfo
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, 80131 Naples, Italy; (R.R.); (I.A.)
- CEINGE Biotecnologie Avanzate, 80145 Naples, Italy
| | - Achille Iolascon
- U.O.C. Genetica Medica, A.O.U. Federico II, 80131 Naples, Italy; (E.M.P.M.); (A.D.F.); (A.I.)
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, 80131 Naples, Italy; (R.R.); (I.A.)
- CEINGE Biotecnologie Avanzate, 80145 Naples, Italy
| | - Carmelo Piscopo
- Medical and Laboratory Genetic Unit, Antonio Cardarelli Hospital, 80131 Naples, Italy
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8
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Robinson CM, Duggan A, Forrester A. ER exit in physiology and disease. Front Mol Biosci 2024; 11:1352970. [PMID: 38314136 PMCID: PMC10835805 DOI: 10.3389/fmolb.2024.1352970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 01/05/2024] [Indexed: 02/06/2024] Open
Abstract
The biosynthetic secretory pathway is comprised of multiple steps, modifications and interactions that form a highly precise pathway of protein trafficking and secretion, that is essential for eukaryotic life. The general outline of this pathway is understood, however the specific mechanisms are still unclear. In the last 15 years there have been vast advancements in technology that enable us to advance our understanding of this complex and subtle pathway. Therefore, based on the strong foundation of work performed over the last 40 years, we can now build another level of understanding, using the new technologies available. The biosynthetic secretory pathway is a high precision process, that involves a number of tightly regulated steps: Protein folding and quality control, cargo selection for Endoplasmic Reticulum (ER) exit, Golgi trafficking, sorting and secretion. When deregulated it causes severe diseases that here we categorise into three main groups of aberrant secretion: decreased, excess and altered secretion. Each of these categories disrupts organ homeostasis differently, effecting extracellular matrix composition, changing signalling events, or damaging the secretory cells due to aberrant intracellular accumulation of secretory proteins. Diseases of aberrant secretion are very common, but despite this, there are few effective therapies. Here we describe ER exit sites (ERES) as key hubs for regulation of the secretory pathway, protein quality control and an integratory hub for signalling within the cell. This review also describes the challenges that will be faced in developing effective therapies, due to the specificity required of potential drug candidates and the crucial need to respect the fine equilibrium of the pathway. The development of novel tools is moving forward, and we can also use these tools to build our understanding of the acute regulation of ERES and protein trafficking. Here we review ERES regulation in context as a therapeutic strategy.
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Affiliation(s)
- Claire M Robinson
- School of Medicine, Health Sciences Centre, University College Dublin, Dublin, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Aislinn Duggan
- School of Medicine, Health Sciences Centre, University College Dublin, Dublin, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Alison Forrester
- Research Unit of Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium
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9
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Artlett CM, Connolly LM. TANGO1 Dances to Export of Procollagen from the Endoplasmic Reticulum. FIBROSIS (HONG KONG, CHINA) 2023; 1:10008. [PMID: 38650832 PMCID: PMC11034787 DOI: 10.35534/fibrosis.2023.10008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The endoplasmic reticulum (ER) to Golgi secretory pathway is an elegantly complex process whereby protein cargoes are manufactured, folded, and distributed from the ER to the cisternal layers of the Golgi stack before they are delivered to their final destinations. The export of large bulky cargoes such as procollagen and its trafficking to the Golgi is a sophisticated mechanism requiring TANGO1 (Transport ANd Golgi Organization protein 1. It is also called MIA3 (Melanoma Inhibitory Activity protein 3). TANGO1 has two prominent isoforms, TANGO1-Long and TANGO1-Short, and each isoform has specific functions. On the luminal side, TANGO1-Long has an HSP47 recruitment domain and uses this protein to collect collagen. It can also tether its paralog isoforms cTAGE5 and TALI and along with these proteins enlarges the vesicle to accommodate procollagen. Recent studies show that TANGO1-Long combines retrograde membrane flow with anterograde cargo transport. This complex mechanism is highly activated in fibrosis and promotes the excessive deposition of collagen in the tissues. The therapeutic targeting of TANGO1 may prove successful in the control of fibrotic disorders. This review focuses on TANGO1 and its complex interaction with other procollagen export factors that modulate increased vesicle size to accommodate the export of procollagen.
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Affiliation(s)
- Carol M. Artlett
- Drexel University College of Medicine, Drexel University, Philadelphia, PA 19129, USA
| | - Lianne M. Connolly
- Drexel University College of Medicine, Drexel University, Philadelphia, PA 19129, USA
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10
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Ragagnin AMG, Sundaramoorthy V, Farzana F, Gautam S, Saravanabavan S, Takalloo Z, Mehta P, Do-Ha D, Parakh S, Shadfar S, Hunter J, Vidal M, Jagaraj CJ, Brocardo M, Konopka A, Yang S, Rayner SL, Williams KL, Blair IP, Chung RS, Lee A, Ooi L, Atkin JD. ALS/FTD-associated mutation in cyclin F inhibits ER-Golgi trafficking, inducing ER stress, ERAD and Golgi fragmentation. Sci Rep 2023; 13:20467. [PMID: 37993492 PMCID: PMC10665471 DOI: 10.1038/s41598-023-46802-9] [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: 04/03/2023] [Accepted: 11/05/2023] [Indexed: 11/24/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a severely debilitating neurodegenerative condition that is part of the same disease spectrum as frontotemporal dementia (FTD). Mutations in the CCNF gene, encoding cyclin F, are present in both sporadic and familial ALS and FTD. However, the pathophysiological mechanisms underlying neurodegeneration remain unclear. Proper functioning of the endoplasmic reticulum (ER) and Golgi apparatus compartments is essential for normal physiological activities and to maintain cellular viability. Here, we demonstrate that ALS/FTD-associated variant cyclin FS621G inhibits secretory protein transport from the ER to Golgi apparatus, by a mechanism involving dysregulation of COPII vesicles at ER exit sites. Consistent with this finding, cyclin FS621G also induces fragmentation of the Golgi apparatus and activates ER stress, ER-associated degradation, and apoptosis. Induction of Golgi fragmentation and ER stress were confirmed with a second ALS/FTD variant cyclin FS195R, and in cortical primary neurons. Hence, this study provides novel insights into pathogenic mechanisms associated with ALS/FTD-variant cyclin F, involving perturbations to both secretory protein trafficking and ER-Golgi homeostasis.
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Affiliation(s)
- Audrey M G Ragagnin
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Vinod Sundaramoorthy
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Fabiha Farzana
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Shashi Gautam
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sayanthooran Saravanabavan
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Zeinab Takalloo
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Prachi Mehta
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Dzung Do-Ha
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia
| | - Sonam Parakh
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sina Shadfar
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Julie Hunter
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Marta Vidal
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Cyril J Jagaraj
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Mariana Brocardo
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Anna Konopka
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Shu Yang
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Stephanie L Rayner
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Kelly L Williams
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Ian P Blair
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Roger S Chung
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Albert Lee
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Lezanne Ooi
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia
| | - Julie D Atkin
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Melbourne, VIC, 3086, Australia.
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11
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Wang Q, Lin X, Lai K, Liu Y, Qin T, Tan H, Li J, Lin Z, Zhang X, Li X, Lin H, Chen W. Novel compound heterozygous variants of the SEC23A gene in a Chinese family with cranio-lenticulo-sutural dysplasia based on data from a large cohort of congenital cataract patients. BMC Med Genomics 2023; 16:241. [PMID: 37828500 PMCID: PMC10568747 DOI: 10.1186/s12920-023-01667-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Cranio-lenticulo-sutural dysplasia (CLSD) is a rare dysmorphic syndrome characterized by skeletal dysmorphism, late-closing fontanels, and cataracts. CLSD is caused by mutations in the SEC23A gene (OMIM# 607812) and can be inherited in either an autosomal dominant or autosomal recessive pattern. To date, only four mutations have been reported to cause CLSD. This study aims to identify the disease-causing variants in a large cohort of congenital cataract patients, to expand the genotypic and phenotypic spectrum of CLSD, and to confirm the association between SEC23A and autosomal recessive CLSD (ARCLSD). METHODS We collected detailed medical records and performed comprehensive ocular examinations and whole-exome sequencing (WES) on 115 patients with congenital cataracts. After suspecting that a patient may have CLSD based on the sequencing results, we proceeded to conduct transmission electron microscopy (TEM) on the cultured skin fibroblasts. The clinical validity of the reported gene-disease relationships for the gene and the disease was evaluated using the ClinGen gene curation framework. RESULTS Two novel compound heterozygous variants (c.710A > C p.Asp237Ala, c.1946T > C p.Leu649Pro) of the SEC23A gene, classified as variant of uncertain significance, were identified in the proband with skeletal, cardiac, ocular, and hearing defects. The observation of typical distended endoplasmic reticulum cisternae further supported the diagnosis of CLSD. Application of the ClinGen gene curation framework confirmed the association between SEC23A and ARCLSD. CONCLUSION This study expands the genotypic and phenotypic spectrum of CLSD, proposes TEM as a supplemental diagnostic method, and indicates that congenital cataracts are a typical sign of ARCLSD.
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Affiliation(s)
- Qiwei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Xiaoshan Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Kunbei Lai
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Yinghui Liu
- Department of Dermatology, Dermatology Hospital, Southern Medical University, 510091, Guangzhou, Guangdong Province, China
| | - Tingfeng Qin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Haowen Tan
- Aegicare Biotech, 518000, Shenzhen, Guangdong Province, China
| | - Jing Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Zhuoling Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Xulin Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Xiaoyan Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China
| | - Haotian Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China.
| | - Weirong Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Centre for Ocular Diseases, Sun Yat-sen University, 510060, Guangzhou, Guangdong Province, China.
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12
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Pihlström S, Richardt S, Määttä K, Pekkinen M, Olkkonen VM, Mäkitie O, Mäkitie RE. SGMS2 in primary osteoporosis with facial nerve palsy. Front Endocrinol (Lausanne) 2023; 14:1224318. [PMID: 37886644 PMCID: PMC10598846 DOI: 10.3389/fendo.2023.1224318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023] Open
Abstract
Pathogenic heterozygous variants in SGMS2 cause a rare monogenic form of osteoporosis known as calvarial doughnut lesions with bone fragility (CDL). The clinical presentations of SGMS2-related bone pathology range from childhood-onset osteoporosis with low bone mineral density and sclerotic doughnut-shaped lesions in the skull to a severe spondylometaphyseal dysplasia with neonatal fractures, long-bone deformities, and short stature. In addition, neurological manifestations occur in some patients. SGMS2 encodes sphingomyelin synthase 2 (SMS2), an enzyme involved in the production of sphingomyelin (SM). This review describes the biochemical structure of SM, SM metabolism, and their molecular actions in skeletal and neural tissue. We postulate how disrupted SM gradient can influence bone formation and how animal models may facilitate a better understanding of SGMS2-related osteoporosis.
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Affiliation(s)
- Sandra Pihlström
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Sampo Richardt
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Kirsi Määttä
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Minna Pekkinen
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Children´s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Vesa M. Olkkonen
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Outi Mäkitie
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Children´s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Molecular Medicine and Surgery and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Riikka E. Mäkitie
- Folkhälsan Institute of Genetics, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Otorhinolaryngology – Head and Neck Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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13
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Song J, Zhang Y, Bai Y, Sun X, Lu Y, Guo Y, He Y, Gao M, Chi X, Heng BC, Zhang X, Li W, Xu M, Wei Y, You F, Zhang X, Lu D, Deng X. The Deubiquitinase OTUD1 Suppresses Secretory Neutrophil Polarization And Ameliorates Immunopathology of Periodontitis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303207. [PMID: 37639212 PMCID: PMC10602526 DOI: 10.1002/advs.202303207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/12/2023] [Indexed: 08/29/2023]
Abstract
Tissue-infiltrating neutrophils (TINs) secrete various signaling molecules to establish paracrine communication within the inflammatory milieu. It is imperative to identify molecular mediators that control this secretory phenotype of TINs. The present study uncovers a secretory neutrophil subset that exhibits increased pro-inflammatory cytokine production and enhanced migratory capacity which is highly related with periodontal pathogenesis. Further analysis identifies the OTU domain-containing protein 1 (OTUD1) plays a regulatory role in this secretory neutrophil polarization. In human and mouse periodontitis, the waning of inflammation is correlated with OTUD1 upregulation, whereas severe periodontitis is induced when neutrophil-intrinsic OTUD1 is depleted. Mechanistically, OTUD1 interacts with SEC23B, a component of the coat protein II complex (COPII). By removing the K63-linked polyubiquitin chains on SEC23B Lysine 81, the deubiquitinase OTUD1 negatively regulates the COPII secretory machinery and limits protein ER-to-Golgi trafficking, thus restricting the surface expression of integrin-regulated proteins, CD9 and CD47. Accordingly, blockade of protein transport by Brefeldin A (BFA) curbs recruitment of Otud1-deficient TINs and attenuates inflammation-induced alveolar bone destruction. The results thus identify OTUD1 signaling as a negative feedback loop that limits the polarization of neutrophils with secretory phenotype and highlight the potential application of BFA in the treatment of periodontal inflammation.
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Affiliation(s)
- Jia Song
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Yuning Zhang
- Department of OrthodonticsPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Yunyang Bai
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xiaowen Sun
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Yanhui Lu
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Yusi Guo
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Ying He
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Min Gao
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xiaopei Chi
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Boon Chin Heng
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Central LaboratoryPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xin Zhang
- Institute of Systems BiomedicineSchool of Basic Medical SciencesNHC Key Laboratory of Medical ImmunologyBeijing Key Laboratory of Tumor Systems BiologyPeking University Health Science CenterBeijing100191P. R. China
| | - Wenjing Li
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Mingming Xu
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Yan Wei
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Fuping You
- Institute of Systems BiomedicineSchool of Basic Medical SciencesNHC Key Laboratory of Medical ImmunologyBeijing Key Laboratory of Tumor Systems BiologyPeking University Health Science CenterBeijing100191P. R. China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Peking University‐Yunnan Baiyao International Medical Research CenterBeijing100191P. R. China
| | - Dan Lu
- Institute of Systems BiomedicineSchool of Basic Medical SciencesNHC Key Laboratory of Medical ImmunologyBeijing Key Laboratory of Tumor Systems BiologyPeking University Health Science CenterBeijing100191P. R. China
| | - Xuliang Deng
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Center for Stomatology National Clinical Research Center for Oral DiseasesNational Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPAKey Laboratory for Dental Materials Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Peking University‐Yunnan Baiyao International Medical Research CenterBeijing100191P. R. China
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14
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Zhu H, Su Y, Wang J, Wu JY. The role of vesicle trafficking genes in osteoblast differentiation and function. Sci Rep 2023; 13:16079. [PMID: 37752218 PMCID: PMC10522589 DOI: 10.1038/s41598-023-43116-8] [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: 05/05/2023] [Accepted: 09/20/2023] [Indexed: 09/28/2023] Open
Abstract
Using Col2.3GFP transgenic mice expressing GFP in maturing osteoblasts, we isolated Col2.3GFP+ enriched osteoblasts from 3 sources. We performed RNA-sequencing, identified 593 overlapping genes and confirmed these genes are highly enriched in osteoblast differentiation and bone mineralization annotation categories. The top 3 annotations are all associated with endoplasmic reticulum and Golgi vesicle transport. We selected 22 trafficking genes that have not been well characterized in bone for functional validation in MC3T3-E1 pre-osteoblasts. Transient siRNA knockdown of trafficking genes including Sec24d, Gosr2, Rab2a, Stx5a, Bet1, Preb, Arf4, Ramp1, Cog6 and Pacs1 significantly increased mineralized nodule formation and expression of osteoblast markers. Increased mineralized nodule formation was suppressed by concurrent knockdown of P4ha1 and/or P4ha2, encoding collagen prolyl 4-hydroxylase isoenzymes. MC3T3-E1 pre-osteoblasts with knockdown of Cog6, Gosr2, Pacs1 or Arf4 formed more and larger ectopic mineralized bone nodules in vivo, which was attenuated by concurrent knockdown P4ha2. Permanent knockdown of Cog6 and Pacs1 by CRISPR/Cas9 gene editing in MC3T3-E1 pre-osteoblasts recapitulated increased mineralized nodule formation and osteoblast differentiation. In summary, we have identified several vesicle trafficking genes with roles in osteoblast function. Our findings provide potential targets for regulating bone formation.
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Affiliation(s)
- Hui Zhu
- Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA
| | - Yingying Su
- Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA
| | - Jamie Wang
- Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA
| | - Joy Y Wu
- Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA.
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15
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Zhang Y, Srivastava V, Zhang B. Mammalian cargo receptors for endoplasmic reticulum-to-Golgi transport: mechanisms and interactions. Biochem Soc Trans 2023:BST20220713. [PMID: 37334845 DOI: 10.1042/bst20220713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/21/2023]
Abstract
Proteins that are destined to enter the secretory pathway are synthesized on the rough endoplasmic reticulum (ER) and then translocated into the ER lumen, where they undergo posttranslational modifications, folding, and assembly. After passing a quality control system, the cargo proteins are packaged into coat protein complex II (COPII) vesicles to exit the ER. In metazoans, most COPII subunits have multiple paralogs, enabling COPII vesicles the flexibility to transport a diverse range of cargo. The cytoplasmic domains of transmembrane proteins can interact with SEC24 subunits of COPII to enter the ER exit sites. Some transmembrane proteins may also act as cargo receptors that bind soluble secretory proteins within the ER lumen, enabling them to enter COPII vesicles. The cytoplasmic domains of cargo receptors also contain coat protein complex I binding motifs that allow for their cycling back to the ER after unloading their cargo in the ER-Golgi intermediate compartment and cis-Golgi. Once unloaded, the soluble cargo proteins continue maturation through the Golgi before reaching their final destinations. This review provides an overview of receptor-mediated transport of secretory proteins from the ER to the Golgi, with a focus on the current understanding of two mammalian cargo receptors: the LMAN1-MCFD2 complex and SURF4, and their roles in human health and disease.
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Affiliation(s)
- Yuan Zhang
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, OH, U.S.A
| | - Vishal Srivastava
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, OH, U.S.A
| | - Bin Zhang
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, OH, U.S.A
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16
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Musri MM, Venturi V, Ferrer-Cortès X, Romero-Cortadellas L, Hernández G, Leoz P, Ricard Andrés MP, Morado M, Fernández Valle MDC, Beneitez Pastor D, Ortuño Cabrero A, Moreno Gamiz M, Senent Peris L, Perez-Valencia AI, Pérez-Montero S, Tornador C, Sánchez M. New Cases and Mutations in SEC23B Gene Causing Congenital Dyserythropoietic Anemia Type II. Int J Mol Sci 2023; 24:9935. [PMID: 37373084 DOI: 10.3390/ijms24129935] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/29/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
Congenital dyserythropoietic anemia type II (CDA II) is an inherited autosomal recessive blood disorder which belongs to the wide group of ineffective erythropoiesis conditions. It is characterized by mild to severe normocytic anemia, jaundice, and splenomegaly owing to the hemolytic component. This often leads to liver iron overload and gallstones. CDA II is caused by biallelic mutations in the SEC23B gene. In this study, we report 9 new CDA II cases and identify 16 pathogenic variants, 6 of which are novel. The newly reported variants in SEC23B include three missenses (p.Thr445Arg, p.Tyr579Cys, and p.Arg701His), one frameshift (p.Asp693GlyfsTer2), and two splicing variants (c.1512-2A>G, and the complex intronic variant c.1512-3delinsTT linked to c.1512-16_1512-7delACTCTGGAAT in the same allele). Computational analyses of the missense variants indicated a loss of key residue interactions within the beta sheet and the helical and gelsolin domains, respectively. Analysis of SEC23B protein levels done in patient-derived lymphoblastoid cell lines (LCLs) showed a significant decrease in SEC23B protein expression, in the absence of SEC23A compensation. Reduced SEC23B mRNA expression was only detected in two probands carrying nonsense and frameshift variants; the remaining patients showed either higher gene expression levels or no expression changes at all. The skipping of exons 13 and 14 in the newly reported complex variant c.1512-3delinsTT/c.1512-16_1512-7delACTCTGGAAT results in a shorter protein isoform, as assessed by RT-PCR followed by Sanger sequencing. In this work, we summarize a comprehensive spectrum of SEC23B variants, describe nine new CDA II cases accounting for six previously unreported variants, and discuss innovative therapeutic approaches for CDA II.
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Affiliation(s)
- Melina Mara Musri
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
| | - Veronica Venturi
- Department of Basic Sciences, Iron Metabolism: Regulation and Diseases Group, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Xènia Ferrer-Cortès
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
- Department of Basic Sciences, Iron Metabolism: Regulation and Diseases Group, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Lídia Romero-Cortadellas
- Department of Basic Sciences, Iron Metabolism: Regulation and Diseases Group, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Gonzalo Hernández
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
- Department of Basic Sciences, Iron Metabolism: Regulation and Diseases Group, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Pilar Leoz
- Red Blood Cell Disorders Unit, Department of Hematology, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
| | - María Pilar Ricard Andrés
- Hematology and Hemotherapy, Hospital Universitario Fundación Alcorcón, Avda Budapest, 28922 Alcorcon, Spain
| | - Marta Morado
- Department of Hematology, University Hospital La Paz, 28046 Madrid, Spain
| | | | - David Beneitez Pastor
- Red Blood Cell Disorders Unit, Hematology Department, Hospital Universitari Vall d'Hebron, VHIO, VHIR, 08035 Barcelona, Spain
| | - Ana Ortuño Cabrero
- Red Blood Cell Disorders Unit, Hematology Department, Hospital Universitari Vall d'Hebron, VHIO, VHIR, 08035 Barcelona, Spain
| | | | - Leonor Senent Peris
- Laboratory of Cytomorphology, Unity of Hematologic Diagnostic, Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain
| | | | - Santiago Pérez-Montero
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
| | - Cristian Tornador
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
| | - Mayka Sánchez
- BloodGenetics S.L. Diagnostics in Inherited Blood Diseases, 08950 Esplugues de Llobregat, Spain
- Department of Basic Sciences, Iron Metabolism: Regulation and Diseases Group, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
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Smyth LJ, Cruise SM, Tang J, Young I, McGuinness B, Kee F, McKnight AJ. Differential methylation in CD44 and SEC23A is associated with time preference in older individuals. ECONOMICS AND HUMAN BIOLOGY 2023; 49:101233. [PMID: 36812724 DOI: 10.1016/j.ehb.2023.101233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/25/2022] [Accepted: 02/06/2023] [Indexed: 05/08/2023]
Abstract
Time preference is a measure used to ascertain the level of which individuals prefer smaller, immediate rewards over larger, delayed rewards. We explored how an individual's time preference associates with their epigenetic profile. Time preferences were ascertained by asking participants of the Northern Ireland COhort for the Longitudinal study of Ageing to make a series of choices between two hypothetical income scenarios. From these, eight 'time preference' categories were derived, ranging from "patient" to "impatient" on an ordinal scale. The Infinium High Density Methylation Assay, MethylationEPIC (Illumina) was used to evaluate the status of 862,927 CpGs. Time preference and DNA methylation data were obtained for 1648 individuals. Four analyses were conducted, assessing the methylation patterns at single site resolution between patient and impatient individuals using two adjustment models. In this discovery cohort analysis, two CpG sites were identified with significantly different levels of methylation (p < 9 × 10-8) between the individuals allocated to the patient group and the remaining population following adjustment for covariates; cg08845621 within CD44 and cg18127619 within SEC23A. Neither of these genes have previously been linked to time preference. Epigenetic modifications have not previously been linked to time preference using a population cohort but they may represent important biomarkers of accumulated, complex determinants of this trait. Further analysis is warranted of both the top-ranked results and of DNA methylation as an important link between measurable biomarkers and health behaviours.
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Affiliation(s)
- Laura J Smyth
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
| | - Sharon M Cruise
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
| | - Jianjun Tang
- School of Agricultural Economics and Rural Development, Renmin University of China, Beijing, China.
| | - Ian Young
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
| | - Bernadette McGuinness
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
| | - Frank Kee
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
| | - Amy Jayne McKnight
- Epidemiology and Public Health Research Group, Centre for Public Health, Queen's University Belfast, BT12 6BJ Northern Ireland, United Kingdom
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18
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Zhaoran S, Linnebacher CS, Linnebacher M. Increased SEC23A Expression Correlates with Poor Prognosis and Immune Infiltration in Stomach Adenocarcinoma. Cancers (Basel) 2023; 15:cancers15072065. [PMID: 37046730 PMCID: PMC10093042 DOI: 10.3390/cancers15072065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Background: Previous studies have described that the SEC23A gene is involved in the occurrence and development of various tumor entities. However, little is known about its expression and relevance in stomach adenocarcinoma (STAD). The aim of this study was to bioinformatically analyze the role of SEC23A in STAD, followed by patient tissue sample analyses. Materials and methods: SEC23A expression levels in STAD and normal gastric tissues were analyzed in the Cancer Genome Atlas and Gene Expression Omnibus databases; results were verified in fresh clinical STAD specimens on both gene and protein expression levels. SEC23A expression correlated with survival parameters by Kaplan–Meier and multivariate Cox regression analyses. The top genes co-expressed with SEC23A were identified by gene set enrichment analysis (GSEA) using the clusterProfiler package in R. Furthermore, the R package (immunedeconv), integrating the CIBERSORT algorithm, was used to estimate immune cell infiltration levels in STAD. Results: SEC23A gene and sec23a protein expression were both significantly upregulated in STAD, and this correlated with the pT stage. Moreover, high SEC23A expression was associated with poor disease-free and overall survival of STAD patients. Cox analyses revealed that besides age and pathologic stage, SEC23A expression is an independent risk factor for STAD. GSEA indicated that SEC23A was positively associated with ECM-related pathways. In the CIBERSORT analysis, the level of SEC23A negatively correlated with various infiltrating immune cell subsets, including follicular helper T cells, Tregs, activated NK cells and myeloid dendritic cells. Finally, the expression levels of immune checkpoint-related genes, including HAVCR2 and PDCD1LG2, were significantly increased in the high SEC23A expression group. Conclusions: We observed the significantly upregulated expression of SEC23A in STAD, an association with disease progression, patients’ prognosis and infiltrating immune cell subsets. Thus, we propose SEC23A as an independent prognostic factor with a putative role in immune response regulation in STAD.
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19
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El-Gazzar A, Voraberger B, Rauch F, Mairhofer M, Schmidt K, Guillemyn B, Mitulović G, Reiterer V, Haun M, Mayr MM, Mayr JA, Kimeswenger S, Drews O, Saraff V, Shaw N, Fratzl-Zelman N, Symoens S, Farhan H, Högler W. Bi-allelic mutation in SEC16B alters collagen trafficking and increases ER stress. EMBO Mol Med 2023; 15:e16834. [PMID: 36916446 PMCID: PMC10086588 DOI: 10.15252/emmm.202216834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 03/16/2023] Open
Abstract
Osteogenesis imperfecta (OI) is a genetically and clinically heterogeneous disorder characterized by bone fragility and reduced bone mass generally caused by defects in type I collagen structure or defects in proteins interacting with collagen processing. We identified a homozygous missense mutation in SEC16B in a child with vertebral fractures, leg bowing, short stature, muscular hypotonia, and bone densitometric and histomorphometric features in keeping with OI with distinct ultrastructural features. In line with the putative function of SEC16B as a regulator of trafficking between the ER and the Golgi complex, we showed that patient fibroblasts accumulated type I procollagen in the ER and exhibited a general trafficking defect at the level of the ER. Consequently, patient fibroblasts exhibited ER stress, enhanced autophagosome formation, and higher levels of apoptosis. Transfection of wild-type SEC16B into patient cells rescued the collagen trafficking. Mechanistically, we show that the defect is a consequence of reduced SEC16B expression, rather than due to alterations in protein function. These data suggest SEC16B as a recessive candidate gene for OI.
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Affiliation(s)
- Ahmed El-Gazzar
- Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Barbara Voraberger
- Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Frank Rauch
- Shriners Hospital for Children-Canada, Montreal, QC, Canada.,Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Mario Mairhofer
- Department of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Linz, Austria
| | - Katy Schmidt
- Centre for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Brecht Guillemyn
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Goran Mitulović
- Clinical Department of Laboratory Medicine Proteomics Core Facility, Medical University Vienna, Vienna, Austria
| | - Veronika Reiterer
- Institute of Pathophysiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Margot Haun
- Institute of Pathophysiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela M Mayr
- Institute of Pathophysiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes A Mayr
- University Children's Hospital, Salzburger Landeskliniken (SALK) and Paracelsus Medical University (PMU), Salzburg, Austria
| | | | - Oliver Drews
- Biomedical Mass Spectrometry, Center for Medical Research, Johannes Kepler University, Linz, Austria
| | - Vrinda Saraff
- Department of Endocrinology and Diabetes, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK.,Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Nick Shaw
- Department of Endocrinology and Diabetes, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK.,The Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Nadja Fratzl-Zelman
- 1st Medical Department Hanusch Hospital, Ludwig Boltzmann Institute of Osteology at Hanusch Hospital of OEGK and AUVA Trauma Centre Meidling, Vienna, Austria.,Vienna Bone and Growth Center, Vienna, Austria
| | - Sofie Symoens
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Hesso Farhan
- Institute of Pathophysiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Wolfgang Högler
- Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria.,Department of Endocrinology and Diabetes, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK.,The Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
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20
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In vitro reconstitution of COPII vesicles from Arabidopsis thaliana suspension-cultured cells. Nat Protoc 2023; 18:810-830. [PMID: 36599961 DOI: 10.1038/s41596-022-00781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/23/2022] [Indexed: 01/06/2023]
Abstract
Transport vesicles mediate protein traffic between endomembrane organelles in a highly selective and efficient manner. In vitro reconstitution systems have been widely used for studying mechanisms of vesicle formation, polar trafficking, and cargo specificity in mammals and yeast. However, this technique has not yet been applied to plants because of the large lytic vacuoles and rigid cell walls. Here, we describe an Arabidopsis-derived in vitro vesicle formation system to reconstitute, purify and characterize plant-derived coat protein complex II (COPII) vesicles. In this protocol, we provide a detailed method for the isolation of microsomes and cytosol from Arabidopsis thaliana suspension-cultured cells (7-8 h), in vitro COPII vesicle reconstitution and purification (4-5 h) and biochemical and microscopic analysis using specific antibodies against COPII cargo molecules for reconstitution efficiency evaluation (2 h). We also include detailed sample-preparation steps for analyzing vesicle morphology by cryogenic electron microscopy (1 h) and vesicle cargoes by quantitative proteomics (4 h). Routinely, the whole procedure takes ~18-20 h of operation time and enables plant researchers without specific expertise to achieve organelle purification or vesicle reconstitution for further characterization.
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21
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Moretti T, Kim K, Tuladhar A, Kim J. KLHL12 can form large COPII structures in the absence of CUL3 neddylation. Mol Biol Cell 2023; 34:br4. [PMID: 36652337 PMCID: PMC10011723 DOI: 10.1091/mbc.e22-08-0383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
CUL3-RING ubiquitin ligases (CRL3s) are involved in various cellular processes through different Bric-a-brac, Tramtrack, and Broad-complex (BTB)-domain proteins. KLHL12, a BTB-domain protein, is suggested to play an essential role in the export of large cargo molecules such as procollagen from the endoplasmic reticulum (ER). CRL3KLHL12 monoubiquitylates SEC31, leading to an increase in COPII vesicle dimension. Enlarged COPII vesicles can accommodate procollagen molecules. Thus, CRL3KLHL12 is essential for the assembly of large COPII structures and collagen secretion. CRL3s are activated by CUL3 neddylation. Here, we evaluated the importance of CUL3 neddylation in COPII assembly and collagen secretion. Unexpectedly, the assembly of large COPII-KLHL12 structures persisted and cellular collagen levels decreased on treatment with MLN4924, a potent inhibitor of NEDD8-activating enzyme. When we introduced mutations into KLHL12 at the CUL3 interface, these KLHL12 variants did not interact with neddylated CUL3, but one of them (Mut A) still supported large COPII-KLHL12 structures. Overexpression of wild-type KLHL12, but not Mut A, lowered cellular collagen levels most likely via lysosomal degradation. Our results suggest that CUL3 neddylation is not necessary for the formation of large COPII-KLHL12 structures, but active CRL3KLHL12 contributes to the maintenance of collagen levels in the cell.
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Affiliation(s)
- Tamara Moretti
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Kyungho Kim
- Targeted Therapy Branch, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Astha Tuladhar
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Jinoh Kim
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
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22
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Tang VT, Ginsburg D. Cargo selection in endoplasmic reticulum-to-Golgi transport and relevant diseases. J Clin Invest 2023; 133:163838. [PMID: 36594468 PMCID: PMC9797344 DOI: 10.1172/jci163838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Most proteins destined for the extracellular space or various intracellular compartments must traverse the intracellular secretory pathway. The first step is the recruitment and transport of cargoes from the endoplasmic reticulum (ER) lumen to the Golgi apparatus by coat protein complex II (COPII), consisting of five core proteins. Additional ER transmembrane proteins that aid cargo recruitment are referred to as cargo receptors. Gene duplication events have resulted in multiple COPII paralogs present in the mammalian genome. Here, we review the functions of each COPII protein, human disorders associated with each paralog, and evidence for functional conservation between paralogs. We also provide a summary of current knowledge regarding two prototypical cargo receptors in mammals, LMAN1 and SURF4, and their roles in human health and disease.
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Affiliation(s)
- Vi T. Tang
- Department of Molecular and Integrative Physiology,,Life Sciences Institute
| | - David Ginsburg
- Life Sciences Institute,,Department of Internal Medicine,,Department of Human Genetics,,Department of Pediatrics and Communicable Diseases, and,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, Michigan, USA
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23
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Chen S, Wei X, Zhang X, Yao M, Qiu Z, Chen L, Zhang L. Supplementation with Tex261 provides a possible preventive treatment for hypoxic pulmonary artery hypertension. Front Pharmacol 2022; 13:1028058. [PMID: 36408272 PMCID: PMC9669906 DOI: 10.3389/fphar.2022.1028058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/19/2022] [Indexed: 10/28/2023] Open
Abstract
Objectives: Pulmonary artery hypertension (PAH) is a serious disease for which there is no effective treatment. Its pathogenesis is complex and has not yet been clarified. Tex261 is a protein-coding gene whose functional enrichment nodes include the transporter activity of COP II. However, the role of Tex261 in PAH remains unknown. Methods: Sugen5416/Hypoxic PAH models were established, and pulmonary arteries (PAs) were isolated for proteomic sequencing. The binding sites between Hif-1α and Tex261 were verified by dual-luciferase reporter gene assay. Cell proliferation was detected by MTS and EdU assays. For determination of the preventive and therapeutic effects of Tex261, intratracheal instillation of adeno-associated virus (AVV6) with Tex261 vectors was performed. Results: Tex261 was screened according to the proteomic sequencing data. Hif-1α inhibited Tex261 promoter activity under hypoxia. Decreased Tex261 expression promoted PASMC proliferation. Tex261 regulated Sec23 via the Ndrg1-mediated Akt pathway. Tex261 overexpression improved the pressure and vessel remodeling of PAs induced by Sugen5416/hypoxia. Conclusion: Hypoxia suppressed Tex261 expression through Hif-1α activation. The decreased Tex261 could promote Ndrg1 and depress Akt activity and then inhibit Sec23 activity, which leads to cell proliferation and vessel remodeling. Elevated Tex261 has some preventive and therapeutic effects on rats with PAH.
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Affiliation(s)
- Shaokun Chen
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Pathophysiology, The School of Basic Medical Sciences, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fuzhou, China
| | - Xiaozhen Wei
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Pathophysiology, The School of Basic Medical Sciences, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fuzhou, China
| | - Xu Zhang
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Pathophysiology, The School of Basic Medical Sciences, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fuzhou, China
| | - Mengge Yao
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Pathophysiology, The School of Basic Medical Sciences, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fuzhou, China
| | - Zhihuang Qiu
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Liangwan Chen
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Li Zhang
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Pathophysiology, The School of Basic Medical Sciences, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fuzhou, China
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24
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Finetti F, Onnis A, Baldari CT. IFT20: An Eclectic Regulator of Cellular Processes beyond Intraflagellar Transport. Int J Mol Sci 2022; 23:ijms232012147. [PMID: 36292997 PMCID: PMC9603483 DOI: 10.3390/ijms232012147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/06/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
Initially discovered as the smallest component of the intraflagellar transport (IFT) system, the IFT20 protein has been found to be implicated in several unconventional mechanisms beyond its essential role in the assembly and maintenance of the primary cilium. IFT20 is now considered a key player not only in ciliogenesis but also in vesicular trafficking of membrane receptors and signaling proteins. Moreover, its ability to associate with a wide array of interacting partners in a cell-type specific manner has expanded the function of IFT20 to the regulation of intracellular degradative and secretory pathways. In this review, we will present an overview of the multifaceted role of IFT20 in both ciliated and non-ciliated cells.
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25
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Sokoya T, Parolek J, Foged MM, Danylchuk DI, Bozan M, Sarkar B, Hilderink A, Philippi M, Botto LD, Terhal PA, Mäkitie O, Piehler J, Kim Y, Burd CG, Klymchenko AS, Maeda K, Holthuis JCM. Pathogenic variants of sphingomyelin synthase SMS2 disrupt lipid landscapes in the secretory pathway. eLife 2022; 11:e79278. [PMID: 36102623 PMCID: PMC9531943 DOI: 10.7554/elife.79278] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 09/13/2022] [Indexed: 11/13/2022] Open
Abstract
Sphingomyelin is a dominant sphingolipid in mammalian cells. Its production in the trans-Golgi traps cholesterol synthesized in the ER to promote formation of a sphingomyelin/sterol gradient along the secretory pathway. This gradient marks a fundamental transition in physical membrane properties that help specify organelle identify and function. We previously identified mutations in sphingomyelin synthase SMS2 that cause osteoporosis and skeletal dysplasia. Here, we show that SMS2 variants linked to the most severe bone phenotypes retain full enzymatic activity but fail to leave the ER owing to a defective autonomous ER export signal. Cells harboring pathogenic SMS2 variants accumulate sphingomyelin in the ER and display a disrupted transbilayer sphingomyelin asymmetry. These aberrant sphingomyelin distributions also occur in patient-derived fibroblasts and are accompanied by imbalances in cholesterol organization, glycerophospholipid profiles, and lipid order in the secretory pathway. We postulate that pathogenic SMS2 variants undermine the capacity of osteogenic cells to uphold nonrandom lipid distributions that are critical for their bone forming activity.
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Affiliation(s)
- Tolulope Sokoya
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Jan Parolek
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Mads Møller Foged
- Cell Death and Metabolism Group, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research CenterCopenhagenDenmark
| | - Dmytro I Danylchuk
- Laboratoire de Bioimagerie et Pathologies, Université de StrasbourgStrasbourgFrance
| | - Manuel Bozan
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Bingshati Sarkar
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Angelika Hilderink
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Michael Philippi
- Biophysics Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Lorenzo D Botto
- Division of Medical Genetics, Department of Pediatrics, University of UtahSalt Lake CityUnited States
| | - Paulien A Terhal
- Department of Genetics, University Medical Center UtrechtUtrechtNetherlands
| | - Outi Mäkitie
- Children’s Hospital, University of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Jacob Piehler
- Biophysics Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
| | - Yeongho Kim
- Department of Cell Biology, Yale School of MedicineNew HavenUnited States
| | - Christopher G Burd
- Department of Cell Biology, Yale School of MedicineNew HavenUnited States
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, Université de StrasbourgStrasbourgFrance
| | - Kenji Maeda
- Cell Death and Metabolism Group, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research CenterCopenhagenDenmark
| | - Joost CM Holthuis
- Molecular Cell Biology Division, Department of Biology and Center of Cellular Nanoanalytics, Osnabrück UniversityOsnabrückGermany
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26
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Jung J, Khan MM, Landry J, Halavatyi A, Machado P, Reiss M, Pepperkok R. Regulation of the COPII secretory machinery via focal adhesions and extracellular matrix signaling. J Cell Biol 2022; 221:213351. [PMID: 35829701 PMCID: PMC9284426 DOI: 10.1083/jcb.202110081] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 05/10/2022] [Accepted: 06/24/2022] [Indexed: 12/19/2022] Open
Abstract
Proteins that enter the secretory pathway are transported from their place of synthesis in the endoplasmic reticulum to the Golgi complex by COPII-coated carriers. The networks of proteins that regulate these components in response to extracellular cues have remained largely elusive. Using high-throughput microscopy, we comprehensively screened 378 cytoskeleton-associated and related proteins for their functional interaction with the coat protein complex II (COPII) components SEC23A and SEC23B. Among these, we identified a group of proteins associated with focal adhesions (FERMT2, MACF1, MAPK8IP2, NGEF, PIK3CA, and ROCK1) that led to the downregulation of SEC23A when depleted by siRNA. Changes in focal adhesions induced by plating cells on ECM also led to the downregulation of SEC23A and decreases in VSVG transport from ER to Golgi. Both the expression of SEC23A and the transport defect could be rescued by treatment with a focal adhesion kinase inhibitor. Altogether, our results identify a network of cytoskeleton-associated proteins connecting focal adhesions and ECM-related signaling with the gene expression of the COPII secretory machinery and trafficking.
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Affiliation(s)
- Juan Jung
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Muzamil Majid Khan
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
| | - Jonathan Landry
- Core Facilities Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Aliaksandr Halavatyi
- Core Facilities Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Pedro Machado
- Core Facilities Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Miriam Reiss
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Rainer Pepperkok
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Core Facilities Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
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Herrmann S, Küchler EC, Reis CLB, Paddenberg E, Zbidat N, Mattos NHR, Schröder A, Proff P, Kirschneck C. Association of third molar agenesis and microdontia with genetic polymorphisms in vitamin-D-related genes. Ann Anat 2022; 244:151972. [PMID: 35738313 DOI: 10.1016/j.aanat.2022.151972] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
The present study aimed to evaluate if functional genetic polymorphisms in vitamin-D-related genes are associated with third molar agenesis and third molar microdontia in German orthodontic patients. Pre-orthodontic and follow-up treatment records were evaluated for phenotype definition. Saliva samples were collected for DNA extraction. Eight potential functional genetic polymorphisms in VDR [rs731236 (TaqI), rs7975232 (ApaI), rs2228570 (FokI), and rs1544410 (BsmI)], CYP27B1 (rs4646536), CYP24A1 (rs927650), GC (rs4588), and SEC23A (rs8018720) were evaluated using real-time PCR. Comparison among the groups were performed (third molar anomaly vs. control; third molar agenesis vs. control; and third molar microdontia vs. control) with an alpha of 5%. A total of 164 patients were analyzed. Forty-nine (29.9%) patients had at least one third molar anomaly. In the haplotype analysis, genetic polymorphisms in VDR and CYP27B1 were associated with third molar anomalies (p<0.05). The G allele in rs8018720 (SEC23A) was more frequent in microdontia cases. In the genotype distribution analysis, rs8018720 in SEC23A was associated with third molar microdontia in the co-dominant (p=0.034; Prevalence Ratio [PR]=5.91, 95% Confidence Interval [CI]= 1.14-30.66) and in the recessive (p=0.038; PR=5.29; 95% CI= 1.09-25.65) models. In conclusion, vitamin D-related genes could be involved in third molar anomalies.
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Affiliation(s)
- Susann Herrmann
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Erika Calvano Küchler
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; School of Dentistry, Tuiuti University from Paraná, Curitiba, Paraná, Brazil
| | - Caio Luiz Bitencourt Reis
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo. Av. do Café S/N, 14040-904 Ribeirão Preto, Brazil
| | - Eva Paddenberg
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Nermien Zbidat
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | | | - Agnes Schröder
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Peter Proff
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University of Regensburg. Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany.
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Li B, Zeng Y, Jiang L. COPII vesicles in plant autophagy and endomembrane trafficking. FEBS Lett 2022; 596:2314-2323. [PMID: 35486434 DOI: 10.1002/1873-3468.14362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/06/2022]
Abstract
In eukaryotes, the endomembrane system allows for spatiotemporal compartmentation of complicated cellular processes. The plant endomembrane system consists of the endoplasmic reticulum (ER), the Golgi apparatus (GA), the trans-Golgi network (TGN), the multivesicular body (MVB), and the vacuole. Anterograde traffic from the ER to GA is mediated by coat protein complex II (COPII) vesicles. Autophagy, an evolutionarily conserved catabolic process that turns over cellular materials upon nutrient deprivation or in adverse environments, exploits double-membrane autophagosomes to recycle unwanted constituents in the lysosome/vacuole. Accumulating evidence reveals novel functions of plant COPII vesicles in autophagy and their regulation by abiotic stresses. Here, we summarize current knowledge about plant COPII vesicles in the endomembrane trafficking and then highlight recent findings showing their distinct roles in modulating the autophagic flux and stress responses.
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Affiliation(s)
- Baiying Li
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Yonglun Zeng
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Liwen Jiang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China.,CUHK Shenzhen Research Institute, Shenzhen, China.,Institute of Plant Molecular Biology and Agricultural Biotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
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29
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Ma T, Zhang F, Wang Y, Xu Z. Molecular mechanisms underlying cTAGE5/MEA6-mediated cargo transport and biological functions. J Genet Genomics 2022; 49:519-522. [DOI: 10.1016/j.jgg.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/06/2022] [Accepted: 04/06/2022] [Indexed: 11/30/2022]
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30
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Sun Z, Liu D, Zeng B, Zhao Q, Li X, Chen H, Wang J, Rosie Xing H. Sec23a inhibits the self-renewal of melanoma cancer stem cells via inactivation of ER-phagy. Cell Commun Signal 2022; 20:22. [PMID: 35236368 PMCID: PMC8889648 DOI: 10.1186/s12964-022-00827-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 01/07/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The genesis and developments of solid tumors, analogous to the renewal of healthy tissues, are driven by a subpopulation of dedicated stem cells, known as cancer stem cells (CSCs), that exhibit long-term clonal repopulation and self-renewal capacity. CSCs may regulate tumor initiation, growth, dormancy, metastasis, recurrence and chemoresistance. While autophagy has been proposed as a regulator of the stemness of CSCs, the underlying mechanisms requires further elucidation. METHODS The CSC component in human melanoma cell lines M14 and A375 was isolated and purified by repetitive enrichments for cells that consistently display anchorage-independent spheroid growth. The stemness properties of the CSCs were confirmed in vitro by the expressions of stemness marker genes, the single-cell cloning assay and the serial spheroid formation assay. Subcutaneous tumor transplantation assay in BALB/c nude mice was performed to test the stemness properties of the CSCs in vivo. The autophagic activity was confirmed by the protein level of LC3 and P62, mRFP-LC3B punta and cytoplasmic accumulation of autolysosomes. The morphology of ER was detected with transmission electron microscopy. RESULTS In the present study, by employing stable CSC cell lines derived from human melanoma cell lines M14 and A375, we show for the first time that Sec23a inhibits the self-renewal of melanoma CSCs via inactivation of ER-phagy. Mechanistically, inhibition of Sec23a reduces ER stress and consequently FAM134B-induced ER-phagy. Furthermore, TCGA data mining and analysis show that Sec23a is a favorable diagnostic and prognostic marker for human skin cutaneous melanoma. CONCLUSION This study has elucidated a new mechanism underlying the regulation of autophagy on stemness, i.e. CSCs can exploit the SEC23A/ER-stress/FAM134B/ER-phagy axis for the self-renewal. These observations provide new ideas for exploration of the regulatory network of CSC self-renewal to develop CSCs-based therapy strategies for malignant tumors. Video Abstract.
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Affiliation(s)
- Zhiwei Sun
- Institute of Life Sciences, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Doudou Liu
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - Bin Zeng
- Institute of Life Sciences, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - Qiting Zhao
- Institute of Life Sciences, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - Xiaoshuang Li
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - Hao Chen
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - Jianyu Wang
- Institute of Life Sciences, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
| | - H. Rosie Xing
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Medical University, 1 Yi Xue Yuan Road, Yuzhong District, Chongqing, 400016 People’s Republic of China
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31
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Liu Z, Yan M, Lei W, Jiang R, Dai W, Chen J, Wang C, Li L, Wu M, Nian X, Li D, Sun D, Lv X, Wang C, Xie C, Yao L, Wu C, Hu J, Xiao N, Mo W, Wang Z, Zhang L. Sec13 promotes oligodendrocyte differentiation and myelin repair through autocrine pleiotrophin signaling. J Clin Invest 2022; 132:155096. [PMID: 35143418 PMCID: PMC8970680 DOI: 10.1172/jci155096] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 02/08/2022] [Indexed: 11/17/2022] Open
Abstract
Dysfunction of protein trafficking has been intensively associated with neurological diseases, including neurodegeneration, but whether and how protein transport contributes to oligodendrocyte (OL) maturation and myelin repair in white matter injury remains unclear. ER-to-Golgi trafficking of newly synthesized proteins is mediated by coat protein complex II (COPII). Here, we demonstrate that the COPII component Sec13 was essential for OL differentiation and postnatal myelination. Ablation of Sec13 in the OL lineage prevented OPC differentiation and inhibited myelination and remyelination after demyelinating injury in the central nervous system (CNS), while improving protein trafficking by tauroursodeoxycholic acid (TUDCA) or ectopic expression of COPII components accelerated myelination. COPII components were upregulated in OL lineage cells after demyelinating injury. Loss of Sec13 altered the secretome of OLs and inhibited the secretion of pleiotrophin (PTN), which was found to function as an autocrine factor to promote OL differentiation and myelin repair. These data suggest that Sec13-dependent protein transport is essential for OL differentiation and that Sec13-mediated PTN autocrine signaling is required for proper myelination and remyelination.
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Affiliation(s)
- Zhixiong Liu
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Minbiao Yan
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Wanying Lei
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Rencai Jiang
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Wenxiu Dai
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Jialin Chen
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Chaomeng Wang
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Li Li
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Mei Wu
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Ximing Nian
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Daopeng Li
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Di Sun
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Xiaoqi Lv
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Chaoying Wang
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Changchuan Xie
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Luming Yao
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Caiming Wu
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Jin Hu
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Naian Xiao
- Department of Neurology, The First Affiliated Hospital, Xiamen University, Fujian, China
| | - Wei Mo
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
| | - Zhanxiang Wang
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
| | - Liang Zhang
- Department of Neuroscience, Institute of Neurosurgery, and Department of Neurosurgery, The First Affiliated Hospital, State Key Laboratory of Cellular Stress Biology, School of Medicine
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital
- School of Life Sciences, Innovation Center for Cell Signaling Network, and
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32
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Wang R, Miao G, Shen JL, Fortier TM, Baehrecke EH. ESCRT dysfunction compromises endoplasmic reticulum maturation and autophagosome biogenesis in Drosophila. Curr Biol 2022; 32:1262-1274.e4. [PMID: 35134326 PMCID: PMC8969116 DOI: 10.1016/j.cub.2022.01.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/09/2021] [Accepted: 01/13/2022] [Indexed: 12/20/2022]
Abstract
Autophagy targets cytoplasmic materials for degradation and influences cell health. Organelle contact and trafficking systems provide membranes for autophagosome formation, but how different membrane systems are selected for use during autophagy remains unclear. Here, we report a novel function of the endosomal sorting complex required for transport (ESCRT) in the regulation of endoplasmic reticulum (ER) coat protein complex II (COPII) vesicle formation that influences autophagy. The ESCRT functions in a pathway upstream of Vps13D to influence COPII vesicle transport, ER-Golgi intermediate compartment (ERGIC) assembly, and autophagosome formation. Atg9 functions downstream of the ESCRT to facilitate ERGIC and autophagosome formation. Interestingly, cells lacking either ESCRT or Vps13D functions exhibit dilated ER structures that are similar to cranio-lenticulo-sutural dysplasia patient cells with SEC23A mutations, which encodes a component of COPII vesicles. Our data reveal a novel ESCRT-dependent pathway that influences the ERGIC and autophagosome formation.
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Affiliation(s)
- Ruoxi Wang
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Guangyan Miao
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - James L Shen
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Tina M Fortier
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Eric H Baehrecke
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
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Crouzier L, Richard EM, Sourbron J, Lagae L, Maurice T, Delprat B. Use of Zebrafish Models to Boost Research in Rare Genetic Diseases. Int J Mol Sci 2021; 22:13356. [PMID: 34948153 PMCID: PMC8706563 DOI: 10.3390/ijms222413356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Rare genetic diseases are a group of pathologies with often unmet clinical needs. Even if rare by a single genetic disease (from 1/2000 to 1/more than 1,000,000), the total number of patients concerned account for approximatively 400 million peoples worldwide. Finding treatments remains challenging due to the complexity of these diseases, the small number of patients and the challenge in conducting clinical trials. Therefore, innovative preclinical research strategies are required. The zebrafish has emerged as a powerful animal model for investigating rare diseases. Zebrafish combines conserved vertebrate characteristics with high rate of breeding, limited housing requirements and low costs. More than 84% of human genes responsible for diseases present an orthologue, suggesting that the majority of genetic diseases could be modelized in zebrafish. In this review, we emphasize the unique advantages of zebrafish models over other in vivo models, particularly underlining the high throughput phenotypic capacity for therapeutic screening. We briefly introduce how the generation of zebrafish transgenic lines by gene-modulating technologies can be used to model rare genetic diseases. Then, we describe how zebrafish could be phenotyped using state-of-the-art technologies. Two prototypic examples of rare diseases illustrate how zebrafish models could play a critical role in deciphering the underlying mechanisms of rare genetic diseases and their use to identify innovative therapeutic solutions.
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Affiliation(s)
- Lucie Crouzier
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Elodie M. Richard
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Jo Sourbron
- Department of Development and Regeneration, Section Pediatric Neurology, University Hospital KU Leuven, 3000 Leuven, Belgium; (J.S.); (L.L.)
| | - Lieven Lagae
- Department of Development and Regeneration, Section Pediatric Neurology, University Hospital KU Leuven, 3000 Leuven, Belgium; (J.S.); (L.L.)
| | - Tangui Maurice
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Benjamin Delprat
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
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Wei W, Liu Z, Zhang C, Khoriaty R, Zhu M, Zhang B. A common human missense mutation of vesicle coat protein SEC23B leads to growth restriction and chronic pancreatitis in mice. J Biol Chem 2021; 298:101536. [PMID: 34954140 PMCID: PMC8760524 DOI: 10.1016/j.jbc.2021.101536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 11/16/2022] Open
Affiliation(s)
- Wei Wei
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, Ohio, USA
| | - Zhigang Liu
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, Ohio, USA
| | - Chao Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rami Khoriaty
- Departments of Internal Medicine, Cell and Developmental Biology and Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Min Zhu
- Department of Pathology, Xinjiang Key Laboratory of Clinical Genetic Testing and Biomedical Information, Karamay Central Hospital, Karamay, China.
| | - Bin Zhang
- Genomic Medicine Institute, Lerner Research Institute of Cleveland Clinic, Cleveland, Ohio, USA.
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35
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Adams EJ, Khoriaty R, Kiseleva A, Cleuren ACA, Tomberg K, van der Ent MA, Gergics P, Tang VT, Zhu G, Hoenerhoff MJ, O'Shea KS, Saunders TL, Ginsburg D. Murine SEC24D can substitute functionally for SEC24C during embryonic development. Sci Rep 2021; 11:21100. [PMID: 34702932 PMCID: PMC8548507 DOI: 10.1038/s41598-021-00579-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/07/2021] [Indexed: 11/30/2022] Open
Abstract
The COPII component SEC24 mediates the recruitment of transmembrane cargos or cargo adaptors into newly forming COPII vesicles on the ER membrane. Mammalian genomes encode four Sec24 paralogs (Sec24a-d), with two subfamilies based on sequence homology (SEC24A/B and C/D), though little is known about their comparative functions and cargo-specificities. Complete deficiency for Sec24d results in very early embryonic lethality in mice (before the 8 cell stage), with later embryonic lethality (E7.5) observed in Sec24c null mice. To test the potential overlap in function between SEC24C/D, we employed dual recombinase mediated cassette exchange to generate a Sec24cc-d allele, in which the C-terminal 90% of SEC24C has been replaced by SEC24D coding sequence. In contrast to the embryonic lethality at E7.5 of SEC24C-deficiency, Sec24cc-d/c-d pups survive to term, though dying shortly after birth. Sec24cc-d/c-d pups are smaller in size, but exhibit no other obvious developmental abnormality by pathologic evaluation. These results suggest that tissue-specific and/or stage-specific expression of the Sec24c/d genes rather than differences in cargo export function explain the early embryonic requirements for SEC24C and SEC24D.
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Affiliation(s)
- Elizabeth J Adams
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, 48109, USA
- Constellation Pharmaceuticals, Cambridge, MA, 02142, USA
| | - Rami Khoriaty
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, 48109, USA.
- Univeristy of Michigan Rogel Cancer Center, Ann Arbor, MI, 48109, USA.
| | - Anna Kiseleva
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Audrey C A Cleuren
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kärt Tomberg
- Departement of Human Genetics, University of Michigan, Ann Arbor, MI, 48109, USA
| | | | - Peter Gergics
- Departement of Human Genetics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Vi T Tang
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Guojing Zhu
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Mark J Hoenerhoff
- In Vivo Animal Core, Unit of Laboratory Animal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - K Sue O'Shea
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Thomas L Saunders
- Transgenic Animal Model Core, University of Michigan, Ann Arbor, MI, 48109, USA
| | - David Ginsburg
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA.
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, 48109, USA.
- Howard Hughes Medical Institute, University of Michigan, Ann Arbor, MI, 48109, USA.
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Cisarova K, Garavelli L, Caraffi SG, Peluso F, Valeri L, Gargano G, Gavioli S, Trimarchi G, Neri A, Campos-Xavier B, Superti-Furga A. A monoallelic SEC23A variant E599K associated with cranio-lenticulo-sutural dysplasia. Am J Med Genet A 2021; 188:319-325. [PMID: 34580982 PMCID: PMC9291540 DOI: 10.1002/ajmg.a.62506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/06/2022]
Abstract
Cranio-lenticulo-sutural dysplasia (CLSD; MIM 607812) is a rare or underdiagnosed condition, as only two families have been reported. The original family (Boyadjiev et al., Human Genetics, 2003, 113, 1-9 and Boyadjiev et al., Nature Genetics, 2006, 38, 1192-1197) showed recessive inheritance of the condition with a biallelic SEC23A missense variant in affected individuals. In contrast, another child with sporadic CLSD had a monoallelic SEC23A variant inherited from the reportedly unaffected father (Boyadjiev et al., Clinical Genetics, 2011, 80, 169-176), raising questions on possible digenism. Here, we report a 2-month-old boy seen because of large fontanels with wide cranial sutures, a large forehead, hypertelorism, a thin nose, a high arched palate, and micrognathia. His mother was clinically unremarkable, while his father had a history of large fontanels in infancy who had closed only around age 10 years; he also had a large forehead, hypertelorism, a thin, beaked nose and was operated for bilateral glaucoma with exfoliation of the lens capsule. Trio genome sequencing and familial segregation revealed a monoallelic c.1795G > A transition in SEC23A that was de novo in the father and transmitted to the proband. The variant predicts a nonconservative substitution (p.E599K) in an ultra-conserved residue that is seen in 3D models of yeast SEC23 to be involved in direct binding between SEC23 and SAR1 subunits of the coat protein complex II coat. This observation confirms the link between SEC23A variants and CLSD but suggests that in addition to the recessive inheritance described in the original family, SEC23A variants may result in dominant inheritance of CLSD, possibly by a dominant-negative disruptive effect on the SEC23 multimer.
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Affiliation(s)
- Katarina Cisarova
- Division of Genetic Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Livia Garavelli
- Clinical Genetics Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | | | - Francesca Peluso
- Clinical Genetics Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Lara Valeri
- Clinical Genetics Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Giancarlo Gargano
- Neonatal Intensive Care Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Sara Gavioli
- Neonatal Intensive Care Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Gabriele Trimarchi
- Clinical Genetics Unit, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Alberto Neri
- Ophthalmology Unit, Department of Surgery, Azienda USL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Belinda Campos-Xavier
- Division of Genetic Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Marí-Beffa M, Mesa-Román AB, Duran I. Zebrafish Models for Human Skeletal Disorders. Front Genet 2021; 12:675331. [PMID: 34490030 PMCID: PMC8418114 DOI: 10.3389/fgene.2021.675331] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/08/2021] [Indexed: 12/17/2022] Open
Abstract
In 2019, the Nosology Committee of the International Skeletal Dysplasia Society provided an updated version of the Nosology and Classification of Genetic Skeletal Disorders. This is a reference list of recognized diseases in humans and their causal genes published to help clinician diagnosis and scientific research advances. Complementary to mammalian models, zebrafish has emerged as an interesting species to evaluate chemical treatments against these human skeletal disorders. Due to its versatility and the low cost of experiments, more than 80 models are currently available. In this article, we review the state-of-art of this “aquarium to bedside” approach describing the models according to the list provided by the Nosology Committee. With this, we intend to stimulate research in the appropriate direction to efficiently meet the actual needs of clinicians under the scope of the Nosology Committee.
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Affiliation(s)
- Manuel Marí-Beffa
- Department of Cell Biology, Genetics and Physiology, Faculty of Sciences, University of Málaga, IBIMA, Málaga, Spain.,Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Andalusian Centre for Nanomedicine and Biotechnology-BIONAND, Málaga, Spain
| | - Ana B Mesa-Román
- Department of Cell Biology, Genetics and Physiology, Faculty of Sciences, University of Málaga, IBIMA, Málaga, Spain
| | - Ivan Duran
- Department of Cell Biology, Genetics and Physiology, Faculty of Sciences, University of Málaga, IBIMA, Málaga, Spain.,Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Andalusian Centre for Nanomedicine and Biotechnology-BIONAND, Málaga, Spain
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38
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Marom R, Burrage LC, Venditti R, Clément A, Blanco-Sánchez B, Jain M, Scott DA, Rosenfeld JA, Sutton VR, Shinawi M, Mirzaa G, DeVile C, Roberts R, Calder AD, Allgrove J, Grafe I, Lanza DG, Li X, Joeng KS, Lee YC, Song IW, Sliepka JM, Batkovskyte D, Washington M, Dawson BC, Jin Z, Jiang MM, Chen S, Chen Y, Tran AA, Emrick LT, Murdock DR, Hanchard NA, Zapata GE, Mehta NR, Weis MA, Scott AA, Tremp BA, Phillips JB, Wegner J, Taylor-Miller T, Gibbs RA, Muzny DM, Jhangiani SN, Hicks J, Stottmann RW, Dickinson ME, Seavitt JR, Heaney JD, Eyre DR, Westerfield M, De Matteis MA, Lee B. COPB2 loss of function causes a coatopathy with osteoporosis and developmental delay. Am J Hum Genet 2021; 108:1710-1724. [PMID: 34450031 PMCID: PMC8456174 DOI: 10.1016/j.ajhg.2021.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 08/04/2021] [Indexed: 02/08/2023] Open
Abstract
Coatomer complexes function in the sorting and trafficking of proteins between subcellular organelles. Pathogenic variants in coatomer subunits or associated factors have been reported in multi-systemic disorders, i.e., coatopathies, that can affect the skeletal and central nervous systems. We have identified loss-of-function variants in COPB2, a component of the coatomer complex I (COPI), in individuals presenting with osteoporosis, fractures, and developmental delay of variable severity. Electron microscopy of COPB2-deficient subjects' fibroblasts showed dilated endoplasmic reticulum (ER) with granular material, prominent rough ER, and vacuoles, consistent with an intracellular trafficking defect. We studied the effect of COPB2 deficiency on collagen trafficking because of the critical role of collagen secretion in bone biology. COPB2 siRNA-treated fibroblasts showed delayed collagen secretion with retention of type I collagen in the ER and Golgi and altered distribution of Golgi markers. copb2-null zebrafish embryos showed retention of type II collagen, disorganization of the ER and Golgi, and early larval lethality. Copb2+/- mice exhibited low bone mass, and consistent with the findings in human cells and zebrafish, studies in Copb2+/- mouse fibroblasts suggest ER stress and a Golgi defect. Interestingly, ascorbic acid treatment partially rescued the zebrafish developmental phenotype and the cellular phenotype in Copb2+/- mouse fibroblasts. This work identifies a form of coatopathy due to COPB2 haploinsufficiency, explores a potential therapeutic approach for this disorder, and highlights the role of the COPI complex as a regulator of skeletal homeostasis.
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Affiliation(s)
- Ronit Marom
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Lindsay C Burrage
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | | | - Aurélie Clément
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | | | - Mahim Jain
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Daryl A Scott
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - V Reid Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Marwan Shinawi
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ghayda Mirzaa
- Center for Integrative Brain Research, Seattle Children's Research Institute, and Department of Pediatrics, University of Washington, and Brotman Baty Institute for Precision Medicine, Seattle, WA 98105, USA
| | - Catherine DeVile
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Rowenna Roberts
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Alistair D Calder
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Jeremy Allgrove
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Ingo Grafe
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Denise G Lanza
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xiaohui Li
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Kyu Sang Joeng
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yi-Chien Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - I-Wen Song
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Joseph M Sliepka
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Dominyka Batkovskyte
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Megan Washington
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Brian C Dawson
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zixue Jin
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ming-Ming Jiang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Shan Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yuqing Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Alyssa A Tran
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Lisa T Emrick
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Department of Pediatrics, Section of Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - David R Murdock
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Neil A Hanchard
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Laboratory for Translational Genomics, ARS/USDA Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Gladys E Zapata
- Laboratory for Translational Genomics, ARS/USDA Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Nitesh R Mehta
- Laboratory for Translational Genomics, ARS/USDA Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mary Ann Weis
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA 98195, USA
| | - Abbey A Scott
- Division of Genetic Medicine, Seattle Children's Hospital, Seattle, WA 98105, USA
| | - Brenna A Tremp
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | | | - Jeremy Wegner
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | | | - Richard A Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Donna M Muzny
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Shalini N Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - John Hicks
- Texas Children's Hospital, Houston, TX 77030, USA; Department of Pathology, Texas Children's Hospital, and Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Rolf W Stottmann
- Division of Human Genetics, and Division of Developmental Biology, and Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Mary E Dickinson
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
| | - John R Seavitt
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jason D Heaney
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - David R Eyre
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA 98195, USA
| | - Monte Westerfield
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | - Maria Antonietta De Matteis
- Telethon Institute of Genetics and Medicine, Naples 80078, Italy; Department of Molecular Medicine and Medical Biotechnology, University of Napoli Federico II, Naples 80078, Italy
| | - Brendan Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA.
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39
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Zeng B, Zhao Q, Sun Z, Liu D, Chen H, Li X, Wang J, Xing HR. SEC23A Is an Independent Prognostic Biomarker in Bladder Cancer Correlated With MAPK Signaling. Front Genet 2021; 12:672832. [PMID: 34456965 PMCID: PMC8385657 DOI: 10.3389/fgene.2021.672832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/11/2021] [Indexed: 12/24/2022] Open
Abstract
Clinical data mining and bioinformatics analysis can be employed effectively to elucidate the function and underlying mechanisms of the gene of interest. Here, we have proposed a framework for the identification and validation of independent biomarkers in human cancer and for mechanistic profiling using gene sets enrichment analysis and pathway analysis. This is followed by validation with in vitro experiments. Using this framework to analyze the clinical relevance of SEC23A, we have discovered the prognostic potential of SEC23A in different cancers and identified SEC23A as an independent prognostic factor for poor prognosis in bladder cancer, which implicates SEC23A, for the first time, as an oncogene. Bioinformatic analyses have elucidated an association between SEC23A expression and the upregulation of the MAPK signaling pathway. Using the T24 human bladder cell line, we confirmed that knockdown of SEC23A expression could effectively impact the MAPK signaling pathway. Further, through PCR verification, we showed that MEF2A, one of the key genes of the MAPK signaling pathway, might be a downstream factor of the SEC23A gene.
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Affiliation(s)
- Bin Zeng
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Qiting Zhao
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Zhiwei Sun
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Doudou Liu
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded By Chongqing and the Ministry of Science and Technology, School of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Hao Chen
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded By Chongqing and the Ministry of Science and Technology, School of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Xiaoshuang Li
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded By Chongqing and the Ministry of Science and Technology, School of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Jianyu Wang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - H Rosie Xing
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded By Chongqing and the Ministry of Science and Technology, School of Biomedical Engineering, Chongqing Medical University, Chongqing, China
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40
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Yamaguchi H, Meyer MD, He L, Senavirathna L, Pan S, Komatsu Y. The molecular complex of ciliary and golgin protein is crucial for skull development. Development 2021; 148:270770. [PMID: 34128978 DOI: 10.1242/dev.199559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/27/2021] [Indexed: 01/13/2023]
Abstract
Intramembranous ossification, which consists of direct conversion of mesenchymal cells to osteoblasts, is a characteristic process in skull development. One crucial role of these osteoblasts is to secrete collagen-containing bone matrix. However, it remains unclear how the dynamics of collagen trafficking is regulated during skull development. Here, we reveal the regulatory mechanisms of ciliary and golgin proteins required for intramembranous ossification. During normal skull formation, osteoblasts residing on the osteogenic front actively secreted collagen. Mass spectrometry and proteomic analysis determined endogenous binding between ciliary protein IFT20 and golgin protein GMAP210 in these osteoblasts. As seen in Ift20 mutant mice, disruption of neural crest-specific GMAP210 in mice caused osteopenia-like phenotypes due to dysfunctional collagen trafficking. Mice lacking both IFT20 and GMAP210 displayed more severe skull defects compared with either IFT20 or GMAP210 mutants. These results demonstrate that the molecular complex of IFT20 and GMAP210 is essential for the intramembranous ossification during skull development.
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Affiliation(s)
- Hiroyuki Yamaguchi
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Matthew D Meyer
- Shared Equipment Authority, Rice University, Houston, TX 77005, USA
| | - Li He
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Lakmini Senavirathna
- The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Sheng Pan
- The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Yoshihiro Komatsu
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.,Graduate Program in Genetics & Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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41
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Upadhyai P, Radhakrishnan P, Guleria VS, Kausthubham N, Nayak SS, Superti-Furga A, Girisha KM. Biallelic deep intronic variant c.5457+81T>A in TRIP11 causes loss of function and results in achondrogenesis 1A. Hum Mutat 2021; 42:1005-1014. [PMID: 34057271 DOI: 10.1002/humu.24235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 11/09/2022]
Abstract
Biallelic loss of function variants in TRIP11 encoding for the Golgi microtubule-associated protein 210 (GMAP-210) causes the lethal chondrodysplasia achondrogenesis type 1A (ACG1A). Loss of TRIP11 activity has been shown to impair Golgi structure, vesicular transport, and results in loss of IFT20 anchorage to the Golgi that is vital for ciliary trafficking and ciliogenesis. Here, we report four fetuses, two each from two families, who were ascertained antenatally with ACG1A. Affected fetuses in both families are homozygous for the deep intronic TRIP11 variant, c.5457+81T>A, which was found in a shared region of homozygosity. This variant was found to cause aberrant transcript splicing and the retention of 77 base pairs of intron 18. The TRIP11 messenger RNA and protein levels were drastically reduced in fibroblast cells derived from one of the affected fetuses. Using immunofluorescence we also detected highly compacted Golgi apparatus in affected fibroblasts. Further, we observed a significant reduction in the frequency of ciliated cells and in the length of primary cilia in subject-derived cell lines, not reported so far in patient cells with TRIP11 null or hypomorphic variants. Our findings illustrate how pathogenic variants in intronic regions of TRIP11 can impact transcript splicing, expression, and activity, resulting in ACG1A.
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Affiliation(s)
- Priyanka Upadhyai
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Periyasamy Radhakrishnan
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Vishal S Guleria
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Neethukrishna Kausthubham
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Shalini S Nayak
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Katta M Girisha
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
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42
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Fenech EJ, Ben-Dor S, Schuldiner M. Double the Fun, Double the Trouble: Paralogs and Homologs Functioning in the Endoplasmic Reticulum. Annu Rev Biochem 2021; 89:637-666. [PMID: 32569522 DOI: 10.1146/annurev-biochem-011520-104831] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The evolution of eukaryotic genomes has been propelled by a series of gene duplication events, leading to an expansion in new functions and pathways. While duplicate genes may retain some functional redundancy, it is clear that to survive selection they cannot simply serve as a backup but rather must acquire distinct functions required for cellular processes to work accurately and efficiently. Understanding these differences and characterizing gene-specific functions is complex. Here we explore different gene pairs and families within the context of the endoplasmic reticulum (ER), the main cellular hub of lipid biosynthesis and the entry site for the secretory pathway. Focusing on each of the ER functions, we highlight specificities of related proteins and the capabilities conferred to cells through their conservation. More generally, these examples suggest why related genes have been maintained by evolutionary forces and provide a conceptual framework to experimentally determine why they have survived selection.
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Affiliation(s)
- Emma J Fenech
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel;
| | - Shifra Ben-Dor
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Maya Schuldiner
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel;
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43
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Lu CL, Kim J. Craniofacial Diseases Caused by Defects in Intracellular Trafficking. Genes (Basel) 2021; 12:726. [PMID: 34068038 PMCID: PMC8152478 DOI: 10.3390/genes12050726] [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: 03/24/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
Cells use membrane-bound carriers to transport cargo molecules like membrane proteins and soluble proteins, to their destinations. Many signaling receptors and ligands are synthesized in the endoplasmic reticulum and are transported to their destinations through intracellular trafficking pathways. Some of the signaling molecules play a critical role in craniofacial morphogenesis. Not surprisingly, variants in the genes encoding intracellular trafficking machinery can cause craniofacial diseases. Despite the fundamental importance of the trafficking pathways in craniofacial morphogenesis, relatively less emphasis is placed on this topic, thus far. Here, we describe craniofacial diseases caused by lesions in the intracellular trafficking machinery and possible treatment strategies for such diseases.
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Affiliation(s)
| | - Jinoh Kim
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA;
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44
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Hutchings J, Stancheva VG, Brown NR, Cheung ACM, Miller EA, Zanetti G. Structure of the complete, membrane-assembled COPII coat reveals a complex interaction network. Nat Commun 2021; 12:2034. [PMID: 33795673 PMCID: PMC8016994 DOI: 10.1038/s41467-021-22110-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/12/2021] [Indexed: 01/02/2023] Open
Abstract
COPII mediates Endoplasmic Reticulum to Golgi trafficking of thousands of cargoes. Five essential proteins assemble into a two-layer architecture, with the inner layer thought to regulate coat assembly and cargo recruitment, and the outer coat forming cages assumed to scaffold membrane curvature. Here we visualise the complete, membrane-assembled COPII coat by cryo-electron tomography and subtomogram averaging, revealing the full network of interactions within and between coat layers. We demonstrate the physiological importance of these interactions using genetic and biochemical approaches. Mutagenesis reveals that the inner coat alone can provide membrane remodelling function, with organisational input from the outer coat. These functional roles for the inner and outer coats significantly move away from the current paradigm, which posits membrane curvature derives primarily from the outer coat. We suggest these interactions collectively contribute to coat organisation and membrane curvature, providing a structural framework to understand regulatory mechanisms of COPII trafficking and secretion.
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Affiliation(s)
- Joshua Hutchings
- Institute of Structural and Molecular Biology, Birkbeck College, London, UK
- Division of Biological Sciences, University of California San Diego, La Jolla, CA, USA
| | | | - Nick R Brown
- Institute of Structural and Molecular Biology, Birkbeck College, London, UK
- The Francis Crick Institute, London, UK
| | - Alan C M Cheung
- Institute of Structural and Molecular Biology, Birkbeck College, London, UK
- School of Biochemistry, University of Bristol, Bristol, UK
| | | | - Giulia Zanetti
- Institute of Structural and Molecular Biology, Birkbeck College, London, UK.
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45
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Tang BL. Defects in early secretory pathway transport machinery components and neurodevelopmental disorders. Rev Neurosci 2021; 32:851-869. [PMID: 33781010 DOI: 10.1515/revneuro-2021-0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 03/12/2021] [Indexed: 12/23/2022]
Abstract
The early secretory pathway, provisionally comprising of vesicular traffic between the endoplasmic reticulum (ER) and the Golgi apparatus, occurs constitutively in mammalian cells. Critical for a constant supply of secretory and plasma membrane (PM) materials, the pathway is presumably essential for general cellular function and survival. Neurons exhibit a high intensity in membrane dynamics and protein/lipid trafficking, with differential and polarized trafficking towards the somatodendritic and axonal PM domains. Mutations in genes encoding early secretory pathway membrane trafficking machinery components are known to result in neurodevelopmental or neurological disorders with disease manifestation in early life. Here, such rare disorders associated with autosomal recessive mutations in coat proteins, membrane tethering complexes and membrane fusion machineries responsible for trafficking in the early secretory pathway are summarily discussed. These mutations affected genes encoding subunits of coat protein complex I and II, subunits of transport protein particle (TRAPP) complexes, members of the YIP1 domain family (YIPF) and a SNAP receptor (SNARE) family member. Why the ubiquitously present and constitutively acting early secretory pathway machinery components could specifically affect neurodevelopment is addressed, with the plausible underlying disease etiologies and neuropathological mechanisms resulting from these mutations explored.
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Affiliation(s)
- Bor Luen Tang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, Singapore117597, Singapore
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46
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Macken WL, Godwin A, Wheway G, Stals K, Nazlamova L, Ellard S, Alfares A, Aloraini T, AlSubaie L, Alfadhel M, Alajaji S, Wai HA, Self J, Douglas AGL, Kao AP, Guille M, Baralle D. Biallelic variants in COPB1 cause a novel, severe intellectual disability syndrome with cataracts and variable microcephaly. Genome Med 2021; 13:34. [PMID: 33632302 PMCID: PMC7908744 DOI: 10.1186/s13073-021-00850-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 02/11/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Coat protein complex 1 (COPI) is integral in the sorting and retrograde trafficking of proteins and lipids from the Golgi apparatus to the endoplasmic reticulum (ER). In recent years, coat proteins have been implicated in human diseases known collectively as "coatopathies". METHODS Whole exome or genome sequencing of two families with a neuro-developmental syndrome, variable microcephaly and cataracts revealed biallelic variants in COPB1, which encodes the beta-subunit of COPI (β-COP). To investigate Family 1's splice donor site variant, we undertook patient blood RNA studies and CRISPR/Cas9 modelling of this variant in a homologous region of the Xenopus tropicalis genome. To investigate Family 2's missense variant, we studied cellular phenotypes of human retinal epithelium and embryonic kidney cell lines transfected with a COPB1 expression vector into which we had introduced Family 2's mutation. RESULTS We present a new recessive coatopathy typified by severe developmental delay and cataracts and variable microcephaly. A homozygous splice donor site variant in Family 1 results in two aberrant transcripts, one of which causes skipping of exon 8 in COPB1 pre-mRNA, and a 36 amino acid in-frame deletion, resulting in the loss of a motif at a small interaction interface between β-COP and β'-COP. Xenopus tropicalis animals with a homologous mutation, introduced by CRISPR/Cas9 genome editing, recapitulate features of the human syndrome including microcephaly and cataracts. In vitro modelling of the COPB1 c.1651T>G p.Phe551Val variant in Family 2 identifies defective Golgi to ER recycling of this mutant β-COP, with the mutant protein being retarded in the Golgi. CONCLUSIONS This adds to the growing body of evidence that COPI subunits are essential in brain development and human health and underlines the utility of exome and genome sequencing coupled with Xenopus tropicalis CRISPR/Cas modelling for the identification and characterisation of novel rare disease genes.
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Affiliation(s)
- William L Macken
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton, SO165YA, UK
| | - Annie Godwin
- European Xenopus Resource Centre, University of Portsmouth School of Biological Sciences, King Henry Building, King Henry I Street, Portsmouth, PO1 2DY, UK
| | - Gabrielle Wheway
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Karen Stals
- Exeter Genomics Laboratory, Level 3 RILD building, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Liliya Nazlamova
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Sian Ellard
- Exeter Genomics Laboratory, Level 3 RILD building, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
- University of Exeter Medical School, RILD building, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Ahmed Alfares
- Department of Pediatrics, College of Medicine, Qassim University, Qassim, Saudi Arabia
- Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Taghrid Aloraini
- Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Lamia AlSubaie
- Division of Genetics, Department of Pediatrics, King Abdullah Specialized Children Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
- King Abdullah International Medical Research Centre, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
| | - Majid Alfadhel
- Division of Genetics, Department of Pediatrics, King Abdullah Specialized Children Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
- King Abdullah International Medical Research Centre, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
- King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
| | - Sulaiman Alajaji
- King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
- Division of Allergy and Clinical Immunology, Department of Pediatrics, King Abdullah Specialized Children Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia
| | - Htoo A Wai
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Jay Self
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Andrew G L Douglas
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton, SO165YA, UK
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Alexander P Kao
- Zeiss Global Centre, School of Mechanical and Design Engineering, University of Portsmouth, Portsmouth, PO1 3DJ, UK
| | - Matthew Guille
- European Xenopus Resource Centre, University of Portsmouth School of Biological Sciences, King Henry Building, King Henry I Street, Portsmouth, PO1 2DY, UK.
| | - Diana Baralle
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton, SO165YA, UK.
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK.
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47
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Abstract
The functions of coat protein complex II (COPII) coats in cargo packaging and the creation of vesicles at the endoplasmic reticulum are conserved in eukaryotic protein secretion. Standard COPII vesicles, however, cannot handle the secretion of metazoan-specific cargoes such as procollagens, apolipoproteins, and mucins. Metazoans have thus evolved modules centered on proteins like TANGO1 (transport and Golgi organization 1) to engage COPII coats and early secretory pathway membranes to engineer a novel mode of cargo export at the endoplasmic reticulum.
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Affiliation(s)
- I Raote
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain; ,
| | - V Malhotra
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain; , .,Universitat Pompeu Fabra (UPF), Barcelona 08002, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain
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48
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Kim S, Khoriaty R, Li L, McClune M, Kalfa TA, Wu J, Peltier D, Fujiwara H, Sun Y, Oravecz-Wilson K, King RA, Ginsburg D, Reddy P. ER-to-Golgi transport and SEC23-dependent COPII vesicles regulate T cell alloimmunity. J Clin Invest 2021; 131:136574. [PMID: 33463537 DOI: 10.1172/jci136574] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 11/12/2020] [Indexed: 01/24/2023] Open
Abstract
T cell-mediated responses are dependent on their secretion of key effector molecules. However, the critical molecular determinants of the secretion of these proteins are largely undefined. Here, we demonstrate that T cell activation increases trafficking via the ER-to-Golgi pathway. To study the functional role of this pathway, we generated mice with a T cell-specific deletion in SEC23B, a core subunit of coat protein complex II (COPII). We found that SEC23B critically regulated the T cell secretome following activation. SEC23B-deficient T cells exhibited a proliferative defect and reduced effector functions in vitro, as well as in experimental models of allogeneic and xenogeneic hematopoietic cell transplantation in vivo. However, T cells derived from 3 patients with congenital dyserythropoietic anemia II (CDAII), which results from Sec23b mutation, did not exhibit a similar phenotype. Mechanistic studies demonstrated that unlike murine KO T cells, T cells from patients with CDAII harbor increased levels of the closely related paralog, SEC23A. In vivo rescue of murine KO by expression of Sec23a from the Sec23b genomic locus restored T cell functions. Together, our data demonstrate a critical role for the COPII pathway, with evidence for functional overlap in vivo between SEC23 paralogs in the regulation of T cell immunity in both mice and humans.
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Affiliation(s)
- Stephanie Kim
- Department of Internal Medicine, Division of Hematology and Oncology.,Medical Scientist Training Program, and
| | - Rami Khoriaty
- Department of Internal Medicine, Division of Hematology and Oncology.,Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - Lu Li
- Department of Internal Medicine, Division of Hematology and Oncology
| | - Madison McClune
- Department of Internal Medicine, Division of Hematology and Oncology
| | - Theodosia A Kalfa
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Julia Wu
- Department of Internal Medicine, Division of Hematology and Oncology.,Medical Scientist Training Program, and
| | - Daniel Peltier
- Department of Pediatrics, Division of Hematology and Oncology
| | - Hideaki Fujiwara
- Department of Internal Medicine, Division of Hematology and Oncology
| | - Yaping Sun
- Department of Internal Medicine, Division of Hematology and Oncology
| | | | - Richard A King
- Department of Internal Medicine, Division of Hematology and Oncology
| | - David Ginsburg
- Department of Internal Medicine, Division of Hematology and Oncology.,Department of Pediatrics, Division of Hematology and Oncology.,Department of Human Genetics.,Life Sciences Institute.,Howard Hughes Medical Institute, and.,Department of Internal Medicine, Division of Genetic Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Pavan Reddy
- Department of Internal Medicine, Division of Hematology and Oncology
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49
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Bisnett BJ, Condon BM, Lamb CH, Georgiou GR, Boyce M. Export Control: Post-transcriptional Regulation of the COPII Trafficking Pathway. Front Cell Dev Biol 2021; 8:618652. [PMID: 33511128 PMCID: PMC7835409 DOI: 10.3389/fcell.2020.618652] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 12/14/2020] [Indexed: 11/13/2022] Open
Abstract
The coat protein complex II (COPII) mediates forward trafficking of protein and lipid cargoes from the endoplasmic reticulum. COPII is an ancient and essential pathway in all eukaryotes and COPII dysfunction underlies a range of human diseases. Despite this broad significance, major aspects of COPII trafficking remain incompletely understood. For example, while the biochemical features of COPII vesicle formation are relatively well characterized, much less is known about how the COPII system dynamically adjusts its activity to changing physiologic cues or stresses. Recently, post-transcriptional mechanisms have emerged as a major mode of COPII regulation. Here, we review the current literature on how post-transcriptional events, and especially post-translational modifications, govern the COPII pathway.
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Affiliation(s)
- Brittany J Bisnett
- Department of Biochemistry, Duke University School of Medicine, Durham, NC, United States
| | - Brett M Condon
- Department of Biochemistry, Duke University School of Medicine, Durham, NC, United States
| | - Caitlin H Lamb
- Department of Biochemistry, Duke University School of Medicine, Durham, NC, United States
| | - George R Georgiou
- Department of Biochemistry, Duke University School of Medicine, Durham, NC, United States
| | - Michael Boyce
- Department of Biochemistry, Duke University School of Medicine, Durham, NC, United States
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50
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Feng Z, Yang K, Pastor-Pareja JC. Tales of the ER-Golgi Frontier: Drosophila-Centric Considerations on Tango1 Function. Front Cell Dev Biol 2021; 8:619022. [PMID: 33505971 PMCID: PMC7829582 DOI: 10.3389/fcell.2020.619022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/14/2020] [Indexed: 12/15/2022] Open
Abstract
In the secretory pathway, the transfer of cargo from the ER to the Golgi involves dozens of proteins that localize at specific regions of the ER called ER exit sites (ERES), where cargos are concentrated preceding vesicular transport to the Golgi. Despite many years of research, we are missing crucial details of how this highly dynamic ER-Golgi interface is defined, maintained and functions. Mechanisms allowing secretion of large cargos such as the very abundant collagens are also poorly understood. In this context, Tango1, discovered in the fruit fly Drosophila and widely conserved in animal evolution, has received a lot of attention in recent years. Tango1, an ERES-localized transmembrane protein, is the single fly member of the MIA/cTAGE family, consisting in humans of TANGO1 and at least 14 different related proteins. After its discovery in flies, a specific role of human TANGO1 in mediating secretion of collagens was reported. However, multiple studies in Drosophila have demonstrated that Tango1 is required for secretion of all cargos. At all ERES, through self-interaction and interactions with other proteins, Tango1 aids ERES maintenance and tethering of post-ER membranes. In this review, we discuss discoveries on Drosophila Tango1 and put them in relation with research on human MIA/cTAGE proteins. In doing so, we aim to offer an integrated view of Tango1 function and the nature of ER-Golgi transport from an evolutionary perspective.
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Affiliation(s)
- Zhi Feng
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Ke Yang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - José C Pastor-Pareja
- School of Life Sciences, Tsinghua University, Beijing, China.,Tsinghua-Peking Center for Life Sciences, Beijing, China
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