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Qiao Y, Wang D, Yan G, Yang Z, Tang C. MiR-411-5p Promotes Vascular Smooth Muscle Cell Phenotype Switch by Inhibiting Expression of Calmodulin Regulated Spectrin-Associated Protein-1. Int Heart J 2024; 65:557-565. [PMID: 38825498 DOI: 10.1536/ihj.23-590] [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] [Indexed: 06/04/2024]
Abstract
When stimulated, vascular smooth muscle cells (VSMCs) change from a differentiated to a dedifferentiated phenotype. Dedifferentiated VSMCs have a key activity in cardiovascular diseases such as in-stent restenosis. MicroRNAs (miRNAs) have crucial functions in conversion of differentiated VSMCs to a dedifferentiated phenotype. We investigated the activity of miR-411-5p in the proliferation, migration, and phenotype switch of rat VSMCs.Based on a microRNA array assay, miR-411-5p expression was found to be significantly increased in cultured VSMCs stimulated by platelet-derived growth factor-BB (PDGF-BB). A CCK-8 assay, transwell assay, and scratch test were performed to measure the effect of miR-411-5p on the proliferation and migration of PDGF-BB-treated VSMCs. MiR-411-5p promoted expression of dedifferentiated phenotype markers such as osteopontin and tropomyosin 4 in PDGF-BB-treated VSMCs. Using mimics and inhibitors, we identified the target of miR-411-5p in PDGF-BB-treated VSMCs and found that calmodulin-regulated spectrin-associated protein-1 (CAMSAP1) was involved in the phenotypic switch mediated by PDGF-BB.By inhibiting expression of CAMSAP1, miR-411-5p enhanced the proliferation, migration, and phenotype switch of VSMCs.Blockade of miR-411-5p interaction with CAMSAP1 is a promising approach to treat in-stent restenosis.
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MESH Headings
- Animals
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Rats
- Cell Proliferation
- Becaplermin/pharmacology
- Phenotype
- Cell Movement
- Cells, Cultured
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/drug effects
- Rats, Sprague-Dawley
- Male
- Osteopontin/metabolism
- Osteopontin/genetics
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Affiliation(s)
- Yong Qiao
- Department of Cardiology, Zhongda Hospital of Southeast University Medical School
| | - Dong Wang
- Department of Cardiology, Zhongda Hospital of Southeast University Medical School
| | - Gaoliang Yan
- Department of Cardiology, Zhongda Hospital of Southeast University Medical School
| | | | - Chengchun Tang
- Department of Cardiology, Zhongda Hospital of Southeast University Medical School
- Medical School of Southeast University
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2
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Khalaf-Nazzal R, Fasham J, Inskeep KA, Blizzard LE, Leslie JS, Wakeling MN, Ubeyratna N, Mitani T, Griffith JL, Baker W, Al-Hijawi F, Keough KC, Gezdirici A, Pena L, Spaeth CG, Turnpenny PD, Walsh JR, Ray R, Neilson A, Kouranova E, Cui X, Curiel DT, Pehlivan D, Akdemir ZC, Posey JE, Lupski JR, Dobyns WB, Stottmann RW, Crosby AH, Baple EL. Bi-allelic CAMSAP1 variants cause a clinically recognizable neuronal migration disorder. Am J Hum Genet 2022; 109:2068-2079. [PMID: 36283405 PMCID: PMC9674946 DOI: 10.1016/j.ajhg.2022.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/27/2022] [Indexed: 01/26/2023] Open
Abstract
Non-centrosomal microtubules are essential cytoskeletal filaments that are important for neurite formation, axonal transport, and neuronal migration. They require stabilization by microtubule minus-end-targeting proteins including the CAMSAP family of molecules. Using exome sequencing on samples from five unrelated families, we show that bi-allelic CAMSAP1 loss-of-function variants cause a clinically recognizable, syndromic neuronal migration disorder. The cardinal clinical features of the syndrome include a characteristic craniofacial appearance, primary microcephaly, severe neurodevelopmental delay, cortical visual impairment, and seizures. The neuroradiological phenotype comprises a highly recognizable combination of classic lissencephaly with a posterior more severe than anterior gradient similar to PAFAH1B1(LIS1)-related lissencephaly and severe hypoplasia or absence of the corpus callosum; dysplasia of the basal ganglia, hippocampus, and midbrain; and cerebellar hypodysplasia, similar to the tubulinopathies, a group of monogenic tubulin-associated disorders of cortical dysgenesis. Neural cell rosette lineages derived from affected individuals displayed findings consistent with these phenotypes, including abnormal morphology, decreased cell proliferation, and neuronal differentiation. Camsap1-null mice displayed increased perinatal mortality, and RNAScope studies identified high expression levels in the brain throughout neurogenesis and in facial structures, consistent with the mouse and human neurodevelopmental and craniofacial phenotypes. Together our findings confirm a fundamental role of CAMSAP1 in neuronal migration and brain development and define bi-allelic variants as a cause of a clinically distinct neurodevelopmental disorder in humans and mice.
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Affiliation(s)
- Reham Khalaf-Nazzal
- Biomedical Sciences Department, Faculty of Medicine, Arab American University of Palestine, Jenin P227, Palestine
| | - James Fasham
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust (Heavitree Hospital), Gladstone Road, Exeter EX1 2ED, UK
| | - Katherine A Inskeep
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA; Institute for Genomic Medicine at Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH 43205, USA
| | - Lauren E Blizzard
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA
| | - Joseph S Leslie
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK
| | - Matthew N Wakeling
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK
| | - Nishanka Ubeyratna
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK
| | - Tadahiro Mitani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jennifer L Griffith
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Wisam Baker
- Paediatrics Department, Dr. Khalil Suleiman Government Hospital, Jenin, Palestine
| | - Fida' Al-Hijawi
- Paediatrics Community Outpatient Clinics, Palestinian Ministry of Health, Jenin, Palestine
| | - Karen C Keough
- Department of Pediatrics, Dell Medical School, 1400 Barbara Jordan Boulevard, Austin, TX 78723, USA; Child Neurology Consultants of Austin, 7940 Shoal Creek Boulevard, Suite 100, Austin, TX 78757, USA
| | - Alper Gezdirici
- Department of Medical Genetics, Başakşehir Çam and Sakura City Hospital, 34480 Istanbul, Turkey
| | - Loren Pena
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Christine G Spaeth
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Peter D Turnpenny
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust (Heavitree Hospital), Gladstone Road, Exeter EX1 2ED, UK
| | - Joseph R Walsh
- Department of Neurological Surgery, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA
| | - Randall Ray
- Departments of Pediatrics and Medical Genetics, Boston Children's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Amber Neilson
- Genome Engineering & Stem Cell Center, Department of Genetics, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA
| | - Evguenia Kouranova
- Genome Engineering & Stem Cell Center, Department of Genetics, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA
| | - Xiaoxia Cui
- Genome Engineering & Stem Cell Center, Department of Genetics, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA
| | - David T Curiel
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in Saint Louis, St. Louis, MO 63130, USA; Division of Cancer Biology, Department of Radiation Oncology, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA; Biologic Therapeutics Center, Department of Radiation Oncology, School of Medicine, Washington University in Saint Louis, St. Louis, MO 63110, USA
| | - Davut Pehlivan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Division of Neurology and Developmental Neuroscience, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Zeynep Coban Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - James R Lupski
- 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; Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - William B Dobyns
- Departments of Pediatrics and Genetics, University of Minnesota, Minneapolis, MN, USA
| | - Rolf W Stottmann
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA; Institute for Genomic Medicine at Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH 43205, USA; Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 7016, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Andrew H Crosby
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK
| | - Emma L Baple
- Department of Clinical and Biomedical Science, University of Exeter Faculty of Health and Life Science, RILD building, Barrack Road, Exeter EX2 5DW, UK; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust (Heavitree Hospital), Gladstone Road, Exeter EX1 2ED, UK.
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3
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Wan Z, Yang X, Liu X, Sun Y, Yu P, Xu F, Deng H. M2 macrophage-derived exosomal microRNA-411-5p impedes the activation of hepatic stellate cells by targeting CAMSAP1 in NASH model. iScience 2022; 25:104597. [PMID: 35789846 PMCID: PMC9249826 DOI: 10.1016/j.isci.2022.104597] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/29/2022] [Accepted: 06/07/2022] [Indexed: 02/07/2023] Open
Abstract
Liver fibrosis is a severe stage of nonalcoholic fatty liver disease (NAFLD), which is closely associated with the activation of hepatic stellate cells (HSCs) and their interaction with macrophages. Exosomes can mediate crosstalk between macrophages and HSCs in NAFLD-associated fibrosis. We found that M2 macrophage-derived exosomes significantly inhibit HSCs activation. RNA-seq studies revealed that miRNA-411-5p was decreased in serum exosomes of nonalcoholic steatohepatitis (NASH) patients as compared with that in healthy controls. Besides, miR-411-5p and M2 macrophage markers are decreased in the liver of the NASH model. We further proved that exosomal miR-411-5p from M2 macrophages inhibit HSCs activation and miR-411-5p directly downregulated the expression of Calmodulin-Regulated Spectrin-Associated Protein 1 (CAMSAP1) to inactivate stellate cells. Importantly, knockdown of CAMSAP1 also inhibited HSCs activation. This study contributes to understanding the underlying mechanism of HSCs activation and indicates CAMSAP1 may serve as a potential therapeutic target for NASH. M2 macrophage markers are decreased in the HFHCD-induced rat model of NASH M2 macrophage-derived exosomes inhibit HSCs activation via miR-411-5p CAMSAP1 is a direct target of miR-411-5p Knockdown of CAMSAP1 inhibits HSCs activation
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4
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Chen Z, Xu W, Zhang D, Chu J, Shen S, Ma Y, Wang Q, Liu G, Yao T, Huang Y, Ye H, Wang J, Ma J, Fan S. circCAMSAP1 promotes osteosarcoma progression and metastasis by sponging miR-145-5p and regulating FLI1 expression. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 23:1120-1135. [PMID: 33664993 PMCID: PMC7901030 DOI: 10.1016/j.omtn.2020.12.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 12/16/2020] [Indexed: 12/18/2022]
Abstract
Osteosarcoma is the most common primary malignant bone tumor in adolescents. While chemotherapy combined with surgery can improve the prognosis of some patients, chemo-resistance is still a huge obstacle in osteosarcoma treatment. Accumulating evidence demonstrates that circular RNAs (circRNAs) are involved in cancer progression and metastasis, but their specific role in osteosarcoma remains mostly undescribed. In this study, we performed circRNA deep sequencing and identified 88 distinct circRNAs from a human osteosarcoma cell lines group (143B, HOS, SJSA, and U2OS) and the human osteoblast hFOB 1.19 (control). We found that circCAMSAP1, also named hsa_circ_0004338, is significantly upregulated in human osteosarcoma tissues and cell lines, and it is positively correlated with osteosarcoma development. Silencing of circCAMSAP1 effectively suppresses osteosarcoma cell growth, apoptosis, migration, and invasion. Furthermore, we validated that circCAMSAP1 functions in osteosarcoma tumorigenesis through a circCAMSAP1/miR-145-5p/friend leukemia virus integration 1 (FLI1) pathway. FLI1 promotes osteosarcoma tumorigenesis and miR-145-5p suppresses FLI translation. circCAMSAP1 directly sequesters miR-145-5p in the cytoplasm and inhibits its activity to suppress osteosarcoma tumorigenesis. Moreover, the regulatory role of circCAMSAP1 upregulation was examined and validated in rats. In summary, our findings provide evidence that circCAMSAP1 act as a "microRNA sponge" and suggest a new therapeutic target of human osteosarcoma.
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Affiliation(s)
- Zizheng Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China.,Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Wenbin Xu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Deguang Zhang
- Department of Head and Neck Surgery, Institution of Micro-Invasion Surgery of Zhejiang University, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China
| | - Junjie Chu
- Department of Head and Neck Surgery, Institution of Micro-Invasion Surgery of Zhejiang University, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China
| | - Shuying Shen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Yan Ma
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Qingxin Wang
- Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Gang Liu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Teng Yao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Yizhen Huang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China.,Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Huali Ye
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Jiying Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Jianjun Ma
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
| | - Shunwu Fan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou 310016, Zhejiang Province, China
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Hu X, Yuan Y, Wang D, Su Z. Heterogeneous astrocytes: Active players in CNS. Brain Res Bull 2016; 125:1-18. [PMID: 27021168 DOI: 10.1016/j.brainresbull.2016.03.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 12/12/2022]
Abstract
Astrocytes, the predominant cell type that are broadly distributed in the brain and spinal cord, play key roles in maintaining homeostasis of the central nerve system (CNS) in physiological and pathological conditions. Increasing evidence indicates that astrocytes are a complex colony with heterogeneity on morphology, gene expression, function and many other aspects depending on their spatio-temporal distribution and activation level. In pathological conditions, astrocytes differentially respond to all kinds of insults, including injury and disease, and participate in the neuropathological process. Based on current studies, we here give an overview of the roles of heterogeneous astrocytes in CNS, especially in neuropathologies, which focuses on biological and functional diversity of astrocytes. We propose that a precise understanding of the heterogeneous astrocytes is critical to unlocking the secrets about pathogenesis and treatment of the mazy CNS.
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Affiliation(s)
- Xin Hu
- Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education, Second Military Medical University, Shanghai, China
| | - Yimin Yuan
- Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education, Second Military Medical University, Shanghai, China
| | - Dan Wang
- Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education, Second Military Medical University, Shanghai, China
| | - Zhida Su
- Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education, Second Military Medical University, Shanghai, China.
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Abstract
Microtubules are cytoskeletal filaments that are intrinsically polarized, with two structurally and functionally distinct ends, the plus end and the minus end. Over the last decade, numerous studies have shown that microtubule plus-end dynamics play an important role in many vital cellular processes and are controlled by numerous factors, such as microtubule plus-end-tracking proteins (+TIPs). In contrast, the cellular machinery that controls the behavior and organization of microtubule minus ends remains one of the least well-understood facets of the microtubule cytoskeleton. The recent characterization of the CAMSAP/Patronin/Nezha family members as specific 'minus-end-targeting proteins' ('-TIPs') has provided important new insights into the mechanisms governing minus-end dynamics. Here, we review the current state of knowledge on how microtubule minus ends are controlled and how minus-end regulators contribute to non-centrosomal microtubule organization and function during cell division, migration and differentiation.
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7
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Sun X, Wang ZM, Song Y, Tai XH, Ji WY, Gu H. MicroRNA-126 modulates the tumor microenvironment by targeting calmodulin-regulated spectrin-associated protein 1 (Camsap1). Int J Oncol 2014; 44:1678-84. [PMID: 24603804 DOI: 10.3892/ijo.2014.2321] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 02/14/2014] [Indexed: 11/05/2022] Open
Abstract
Plasma miRNAs have been reported as biomarkers for various diseases. In this study, we investigated whether plasma concentrations of miR-126 may be useful as biomarkers for laryngeal squamous cell carcinoma (LSCC). We examined the function and mechanism of miR-126 in LSCC by using cell biology and molecular pathology techniques such as western blotting, quantitative PCR, IHC and IF. The expression of Camsap1 mRNA and protein is higher in cancer tissues compared to that in normal tissues. Both miR-126 and Camsap1 were related with the prognosis of LSCC patients. We found that miR-126 was able to inhibit LSCC partly by suppressing Camsap1 expression. In addition, Camsap1 expression induced microtubule formation and aggregation. This mechanism possibly explains why loss of miR-126 is frequently associated with tumor metastasis.
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Affiliation(s)
- Xin Sun
- Department of Otorhinolarynology, Shengjing Hospital, China Medical University, Shenyang 110004, P.R. China
| | - Zhi-Ming Wang
- Department of Stomatology, Shengjing Hospital, China Medical University, Shenyang 110004, P.R. China
| | - Yan Song
- Department of Otorhinolarynology, Shengjing Hospital, China Medical University, Shenyang 110004, P.R. China
| | - Xu-Hui Tai
- Department of Otorhinolarynology, Chinese PLA 463 Hospital, P.R. China
| | - Wen-Yue Ji
- Department of Otorhinolarynology, Shengjing Hospital, China Medical University, Shenyang 110004, P.R. China
| | - Hui Gu
- Department of Central Laboratory, Shengjing Hospital, China Medical University, Shenyang 110004, P.R. China
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Marcette JD, Chen JJ, Nonet ML. The Caenorhabditis elegans microtubule minus-end binding homolog PTRN-1 stabilizes synapses and neurites. eLife 2014; 3:e01637. [PMID: 24569480 PMCID: PMC3930908 DOI: 10.7554/elife.01637] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 01/17/2014] [Indexed: 12/17/2022] Open
Abstract
Microtubule dynamics facilitate neurite growth and establish morphology, but the role of minus-end binding proteins in these processes is largely unexplored. CAMSAP homologs associate with microtubule minus-ends, and are important for the stability of epithelial cell adhesions. In this study, we report morphological defects in neurons and neuromuscular defects in mutants of the C. elegans CAMSAP, ptrn-1. Mechanosensory neurons initially extend wild-type neurites, and subsequently remodel by overextending neurites and retracting synaptic branches and presynaptic varicosities. This neuronal remodeling can be activated by mutations known to alter microtubules, and depends on a functioning DLK-1 MAP kinase pathway. We found that PTRN-1 localizes to both neurites and synapses, and our results suggest that alterations of microtubule structures caused by loss of PTRN-1 function activates a remodeling program leading to changes in neurite morphology. We propose a model whereby minus-end microtubule stabilization mediated by a functional PTRN-1 is necessary for morphological maintenance of neurons. DOI: http://dx.doi.org/10.7554/eLife.01637.001.
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Affiliation(s)
- Jana Dorfman Marcette
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, United States
| | - Jessica Jie Chen
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, United States
| | - Michael L Nonet
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, United States
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9
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King MDA, Phillips GW, Bignone PA, Hayes NVL, Pinder JC, Baines AJ. A conserved sequence in calmodulin regulated spectrin-associated protein 1 links its interaction with spectrin and calmodulin to neurite outgrowth. J Neurochem 2013; 128:391-402. [PMID: 24117850 PMCID: PMC4016758 DOI: 10.1111/jnc.12462] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 09/08/2013] [Accepted: 09/23/2013] [Indexed: 11/28/2022]
Abstract
Calmodulin regulated spectrin-associated protein 1 (CAMSAP1) is a vertebrate microtubule-binding protein, and a representative of a family of cytoskeletal proteins that arose with animals. We reported previously that the central region of the protein, which contains no recognized functional domain, inhibited neurite outgrowth when over-expressed in PC12 cells [Baines et al., Mol. Biol. Evol. 26 (2009), p. 2005]. The CKK domain (DUF1781) binds microtubules and defines the CAMSAP/ssp4 family of animal proteins (Baines et al. 2009). In the central region, three short well-conserved regions are characteristic of CAMSAP-family members. One of these, CAMSAP-conserved region 1 (CC1), bound to both βIIΣ1-spectrin and Ca2+/calmodulin in vitro. The binding of Ca2+/calmodulin inhibited spectrin binding. Transient expression of CC1 in PC12 cells inhibited neurite outgrowth. siRNA knockdown of CAMSAP1 inhibited neurite outgrowth in PC12 cells or primary cerebellar granule cells: this could be rescued in PC12 cells by wild-type CAMSAP1-enhanced green fluorescent protein, but not by a CC1 mutant. We conclude that CC1 represents a functional region of CAMSAP1, which links spectrin-binding to neurite outgrowth.
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Zhan R, Yamamoto M, Ueki T, Yoshioka N, Tanaka K, Morisaki H, Seiwa C, Yamamoto Y, Kawano H, Tsuruo Y, Watanabe K, Asou H, Aiso S. A DEAD-box RNA helicase Ddx54 protein in oligodendrocytes is indispensable for myelination in the central nervous system. J Neurosci Res 2012; 91:335-48. [PMID: 23239230 DOI: 10.1002/jnr.23162] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Revised: 09/22/2012] [Accepted: 10/02/2012] [Indexed: 02/05/2023]
Abstract
We recently reported that a new monoclonal antibody, 4F2, which labels oligodendroglial lineage cells, recognizes a DEAD-box RNA helicase Ddx54 and that Ddx54 binds to myelin basic protein (MBP) in brain and cultured oligodendrocytes. To elucidate the biological function of Ddx54, we generated a recombinant adenovirus, Ad-shRNA:Ddx54, expressing a short hairpin RNA to silence endogenous Ddx54 protein. The virus was intraventricularly injected into the brains of mice on postnatal day (PD) 2. The brains at PD 9 were then analyzed by immunohistochemistry. In untreated normal brain sections, as well as control brains that had been injected with Ad-β-Gal, myelination of axons occurred in the corpus callosum with filamentous patterns of immunosignals of myelin-associated glycoprotein (MAG) and MBP. In Ad-shRNA:Ddx54-injected brain, substantial amounts of MAG and MBP immunosignals were present, but MBP immunosignals accumulated in the subplate layer and did not intrude into the emerging white matter. Immunoblot analysis revealed that Ddx54 knockdown caused a significant decrease in the level of 21.5 kDa MBP isoform and Ddx54, but the amount of Olig2; 2',3'-cyclic nucleotide 3' phosphodiesterase; MAG; three MBP isoforms (14, 17.5, and 18 kDa); and QKI-5, QKI-6, and QKI-7 proteins remained unchanged. Transfection of the Ddx54 expression vector into luciferase reporter-introduced neuroepithelial cells resulted in upregulated MBP promoter activity. Immunoprecipitation of Ddx54 protein in MBP-transfected HEK293 cells indicated that Ddx54 may directly interact with MBP mRNA. These results suggest that Ddx54 protein play an important role in central nervous system myelination, presumably in myelin sheath formation after the differentiation of oligodendrocytes.
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Affiliation(s)
- Rui Zhan
- Center for Kampo Medicine, Keio University School of Medicine, Tokyo, Japan
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11
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Yoshioka N, Asou H, Hisanaga SI, Kawano H. The astrocytic lineage marker calmodulin-regulated spectrin-associated protein 1 (Camsap1): phenotypic heterogeneity of newly born Camsap1-expressing cells in injured mouse brain. J Comp Neurol 2012; 520:1301-17. [PMID: 22095662 DOI: 10.1002/cne.22788] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Calmodulin-regulated spectrin-associated protein 1 (Camsap1) has been recognized as a new marker for astrocytic lineage cells and is expressed on mature astrocytes in the adult brain (Yamamoto et al. [2009] J. Neurosci. Res. 87:503–513). In the present study, we found that newly born Camsap1-expressing cells exhibited regional heterogeneity in an early phase after stab injury of the mouse brain. In the surrounding area of the lesion site, Camsap1 was expressed on quiescent astrocytes. At 3 days after injury, Camsap1 immunoreactivity was upregulated on glial fibrillary acidic protein-immunoreactive (GFAP-ir) astrocytes. Some of these astrocytes incorporated bromodeoxyuridine (BrdU) together with re-expression of the embryonic cytoskeleton protein nestin. In the neighboring region of the lesion cavity, Camsap1 was expressed on GFAP-negative cells. At 3 days after injury, GFAP-ir astrocytes were absent around the lesion cavity. At this stage, NG2-ir cells immunopositive for Camsap1 and immunonegative for GFAP were distributed in border of the lesion cavity. By 10 days, Camsap1 immunoreactivity was exclusively detected on GFAP-ir reactive astrocytes devoid of NG2 immunoreactivity. BrdU pulse-chase labeling assay suggested the differentiation of Camsap1+/NG2+ cells into Camsap1+/GFAP+ astrocytes. In the subependymal zone of the lateral ventricle, Camsap1-ir cells increased after injury. Camsap1 immunoreactivity was distributed on ependymal and subependymal cells bearing various astrocyte markers, and BrdU incorporation was enhanced on such Camsap1-ir cells after injury. These results suggest that newly born reactive astrocytes are derived from heterogeneous Camsap1-expressing cells in the injured brain.
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Affiliation(s)
- Nozomu Yoshioka
- Department of Brain Development and Neural Regeneration, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo 156-8506, Japan
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12
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Guo Y, Baum LW, Sham PC, Wong V, Ng PW, Lui CHT, Sin NC, Tsoi TH, Tang CS, Kwan JS, Yip BH, Xiao SM, Thomas GN, Lau YL, Yang W, Cherny SS, Kwan P. Two-stage genome-wide association study identifies variants in CAMSAP1L1 as susceptibility loci for epilepsy in Chinese. Hum Mol Genet 2011; 21:1184-9. [DOI: 10.1093/hmg/ddr550] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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13
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Ueki T, Tsuruo Y, Yamamoto Y, Yoshimura K, Takanaga H, Seiwa C, Motojima K, Asou H, Yamamoto M. A new monoclonal antibody, 4F2, specific for the oligodendroglial cell lineage, recognizes ATP-dependent RNA helicase Ddx54: possible association with myelin basic protein. J Neurosci Res 2011; 90:48-59. [PMID: 21932369 DOI: 10.1002/jnr.22736] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 06/07/2011] [Accepted: 06/10/2011] [Indexed: 11/07/2022]
Abstract
Recent research in neural development has highlighted the importance of markers to discriminate phenotypic alterations of neural cells at various developmental stages. We isolated a new monoclonal antibody, 4F2, which was shown to be specific for an oligodendrocyte lineage. In primary cultures of oligodendroglial and mixed neural cells, the 4F2 antibody labeled a large proportion of Sox2(+) , Sox10(+) , A2B5(+) , NG2(+) , Olig2(+) , O4(+) , and myelin basic protein (MBP)(+) cells but did not label any GFAP(+) or NeuN(+) cells. In immunohistochemisty of rat embryos, the 4F2 antibody labeled a portion of neuroepithelial cells of the neural tube at embryonic day 9. The 4F2-positive cells were located initially in the ventricular zone as Musashi1(+) Tuj1(-) populations and distributed throughout the striatum; thereafter, they populated the whole brain and spinal cord. These cells showed ramified processes during embryonal development. The 4F2 antigen was associated with all four isoforms of MBP in coimmunoprecipitation experiments using brain homogenates or cell lysates of cultured oligodendrocytes. Immunoscreening of a brain cDNA library identified the antigen as DEAD (Asp-Glu-Ala-Asp) box polypeptide 54 (Ddx54), a member of the DEAD box family of RNA helicases involved in RNA metabolism, transcription, and translation. Cotransfection of the Ddx54 gene with MBP isoform genes increased the nuclear localization of the 21.5-kDa MBP isoform, which has been reported to function as a nuclear signal transduction molecule. These data indicate that Ddx54 might be not only a useful marker for investigating the ontogeny of oligodendrocytes but also an important factor in oligodendrocyte differentiation and myelination.
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Affiliation(s)
- Toshiyuki Ueki
- Department of Neuro-Glia Cell Biology, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
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14
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Cho K, Vaught TG, Ji H, Gu D, Papasakelariou-Yared C, Horstmann N, Jennings JM, Lee M, Sevilla LM, Kloc M, Reynolds AB, Watt FM, Brennan RG, Kowalczyk AP, McCrea PD. Xenopus Kazrin interacts with ARVCF-catenin, spectrin and p190B RhoGAP, and modulates RhoA activity and epithelial integrity. J Cell Sci 2010; 123:4128-44. [PMID: 21062899 DOI: 10.1242/jcs.072041] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In common with other p120-catenin subfamily members, Xenopus ARVCF (xARVCF) binds cadherin cytoplasmic domains to enhance cadherin metabolic stability or, when dissociated, modulates Rho-family GTPases. We report here that xARVCF binds and is stabilized by Xenopus KazrinA (xKazrinA), a widely expressed conserved protein that bears little homology to established protein families, and which is known to influence keratinocyte proliferation and differentiation and cytoskeletal activity. Although we found that xKazrinA binds directly to xARVCF, we did not resolve xKazrinA within a larger ternary complex with cadherin, nor did it co-precipitate with core desmosomal components. Instead, screening revealed that xKazrinA binds spectrin, suggesting a potential means by which xKazrinA localizes to cell-cell borders. This was supported by the resolution of a ternary biochemical complex of xARVCF-xKazrinA-xβ2-spectrin and, in vivo, by the finding that ectodermal shedding followed depletion of xKazrin in Xenopus embryos, a phenotype partially rescued with exogenous xARVCF. Cell shedding appeared to be the consequence of RhoA activation, and thereby altered actin organization and cadherin function. Indeed, we also revealed that xKazrinA binds p190B RhoGAP, which was likewise capable of rescuing Kazrin depletion. Finally, xKazrinA was found to associate with δ-catenins and p0071-catenins but not with p120-catenin, suggesting that Kazrin interacts selectively with additional members of the p120-catenin subfamily. Taken together, our study supports the essential role of Kazrin in development, and reveals the biochemical and functional association of KazrinA with ARVCF-catenin, spectrin and p190B RhoGAP.
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Affiliation(s)
- Kyucheol Cho
- Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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15
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Baines AJ, Bignone PA, King MDA, Maggs AM, Bennett PM, Pinder JC, Phillips GW. The CKK domain (DUF1781) binds microtubules and defines the CAMSAP/ssp4 family of animal proteins. Mol Biol Evol 2009; 26:2005-14. [PMID: 19508979 DOI: 10.1093/molbev/msp115] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
We describe a structural domain common to proteins related to human calmodulin-regulated spectrin-associated protein1 (CAMSAP1). Analysis of the sequence of CAMSAP1 identified a domain near the C-terminus common to CAMSAP1 and two other mammalian proteins KIAA1078 and KIAA1543, which we term a CKK domain. This domain was also present in invertebrate CAMSAP1 homologues and was found in all available eumetazoan genomes (including cnidaria), but not in the placozoan Trichoplax adherens, nor in any nonmetazoan organism. Analysis of codon alignments by the sitewise likelihood ratio method gave evidence for strong purifying selection on all codons of mammalian CKK domains, potentially indicating conserved function. Interestingly, the Drosophila homologue of the CAMSAP family is encoded by the ssp4 gene, which is required for normal formation of mitotic spindles. To investigate function of the CKK domain, human CAMSAP1-enhanced green fluorescent protein (EGFP) and fragments including the CKK domain were expressed in HeLa cells. Both whole CAMSAP1 and the CKK domain showed localization coincident with microtubules. In vitro, both whole CAMSAP1-glutathione-s-transferase (GST) and CKK-GST bound to microtubules. Immunofluorescence using anti-CAMSAP1 antibodies on cerebellar granule neurons revealed a microtubule pattern. Overexpression of the CKK domain in PC12 cells blocked production of neurites, a process that requires microtubule function. We conclude that the CKK domain binds microtubules and represents a domain that evolved with the metazoa.
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Affiliation(s)
- Anthony J Baines
- Department of Biosciences, University of Kent, Canterbury, Kent, United Kingdom.
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