دورية أكاديمية
أعرض في EDS

Calpain-5 Expression in the Retina Localizes to Photoreceptor Synapses.

التفاصيل البيبلوغرافية
العنوان: Calpain-5 Expression in the Retina Localizes to Photoreceptor Synapses.
المؤلفون: Schaefer KA; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States., Toral MA; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States 3Medical Scientist Training Program, University of Iowa, Iowa City, Iowa, United States., Velez G; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States 3Medical Scientist Training Program, University of Iowa, Iowa City, Iowa, United States., Cox AJ; Department of Pediatrics, University of Iowa, Iowa City, Iowa, United States., Baker SA; Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States 5Department of Biochemistry, University of Iowa, Iowa City, Iowa, United States., Borcherding NC; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 3Medical Scientist Training Program, University of Iowa, Iowa City, Iowa, United States., Colgan DF; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States., Bondada V; Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky, United States., Mashburn CB; Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky, United States., Yu CG; Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky, United States., Geddes JW; Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky, United States., Tsang SH; Barbara & Donald Jonas Stem Cell Laboratory, and Bernard & Shirlee Brown Glaucoma Laboratory, Department of Pathology & Cell Biology, Institute of Human Nutrition, College of Physicians and Surgeons, Columbia University, New York, New York, United States., Bassuk AG; Department of Pediatrics, University of Iowa, Iowa City, Iowa, United States 9Neurology, University of Iowa, Iowa City, Iowa, United States., Mahajan VB; Omics Laboratory, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology & Visual Sciences, University of Iowa, Iowa City, Iowa, United States.
المصدر: Investigative ophthalmology & visual science [Invest Ophthalmol Vis Sci] 2016 May 01; Vol. 57 (6), pp. 2509-21.
نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Association For Research In Vision And Ophthalmology (Arvo) Country of Publication: United States NLM ID: 7703701 Publication Model: Print Cited Medium: Internet ISSN: 1552-5783 (Electronic) Linking ISSN: 01460404 NLM ISO Abbreviation: Invest Ophthalmol Vis Sci Subsets: MEDLINE
أسماء مطبوعة: Publication: Brookline Ma : Association For Research In Vision And Ophthalmology (Arvo)
Original Publication: St. Louis, Mosby.
مواضيع طبية MeSH: Gene Expression Regulation, Neoplastic*, Calpain/*genetics , Photoreceptor Cells/*metabolism , RNA, Neoplasm/*genetics , Retinal Neoplasms/*genetics , Retinoblastoma/*genetics , Synapses/*metabolism, Animals ; Blotting, Western ; Calpain/biosynthesis ; Cattle ; Female ; Humans ; Immunohistochemistry ; Male ; Mice ; Neoplasms, Experimental ; Photoreceptor Cells/pathology ; Retina/metabolism ; Retina/pathology ; Retinal Neoplasms/metabolism ; Retinal Neoplasms/pathology ; Retinoblastoma/metabolism ; Retinoblastoma/pathology ; Tumor Cells, Cultured
مستخلص: Purpose: We characterize calpain-5 (CAPN5) expression in retinal and neuronal subcellular compartments.
Methods: CAPN5 gene variants were classified using the exome variant server, and RNA-sequencing was used to compare expression of CAPN5 mRNA in the mouse and human retina and in retinoblastoma cells. Expression of CAPN5 protein was ascertained in humans and mice in silico, in mouse retina by immunohistochemistry, and in neuronal cancer cell lines and fractionated central nervous system tissue extracts by Western analysis with eight antibodies targeting different CAPN5 regions.
Results: Most CAPN5 genetic variation occurs outside its protease core; and searches of cancer and epilepsy/autism genetic databases found no variants similar to hyperactivating retinal disease alleles. The mouse retina expressed one transcript for CAPN5 plus those of nine other calpains, similar to the human retina. In Y79 retinoblastoma cells, the level of CAPN5 transcript was very low. Immunohistochemistry detected CAPN5 expression in the inner and outer nuclear layers and at synapses in the outer plexiform layer. Western analysis of fractionated retinal extracts confirmed CAPN5 synapse localization. Western blots of fractionated brain neuronal extracts revealed distinct subcellular patterns and the potential presence of autoproteolytic CAPN5 domains.
Conclusions: CAPN5 is moderately expressed in the retina and, despite higher expression in other tissues, hyperactive disease mutants of CAPN5 only manifest as eye disease. At the cellular level, CAPN5 is expressed in several different functional compartments. CAPN5 localization at the photoreceptor synapse and with mitochondria explains the neural circuitry phenotype in human CAPN5 disease alleles.
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معلومات مُعتمدة: F31 EY026789 United States EY NEI NIH HHS; R21 AG050437 United States AG NIA NIH HHS; R01 EY024665 United States EY NEI NIH HHS; K08 EY020530 United States EY NEI NIH HHS; R01 EY024698 United States EY NEI NIH HHS; R01 EY020542 United States EY NEI NIH HHS; R01 EY025225 United States EY NEI NIH HHS; F30 EY027986 United States EY NEI NIH HHS; T32 GM007337 United States GM NIGMS NIH HHS; T32 GM008629 United States GM NIGMS NIH HHS
المشرفين على المادة: 0 (RNA, Neoplasm)
EC 3.4.22.- (Calpain)
EC 3.4.22.- (Capn5 protein, human)
تواريخ الأحداث: Date Created: 20160507 Date Completed: 20170615 Latest Revision: 20210624
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC4868102
DOI: 10.1167/iovs.15-18680
PMID: 27152965
قاعدة البيانات: MEDLINE
الوصف
تدمد:1552-5783
DOI:10.1167/iovs.15-18680