ZFIN ID: ZDB-PUB-100806-2
Zebrafish type XVII collagen: Gene structures, expression profiles, and morpholino "knock-down" phenotypes
Kim, S.H., Choi, H.Y., So, J.H., Kim, C.H., Ho, S.Y., Frank, M., Li, Q., and Uitto, J.
Date: 2010
Source: Matrix biology : journal of the International Society for Matrix Biology   29(7): 629-637 (Journal)
Registered Authors: Ho, Shiu-Ying, Kim, Cheol-Hee, So, Ju-Hoon
Keywords: Type XVII collagen, Morpholino “knock-down”, Hemidesmosomes, Zebrafish development
MeSH Terms:
  • 5' Untranslated Regions/genetics
  • Amino Acid Sequence/genetics
  • Animal Structures/abnormalities
  • Animal Structures/metabolism
  • Animal Structures/pathology
  • Animals
  • Autoantigens/genetics*
  • Congenital Abnormalities/genetics
  • Congenital Abnormalities/pathology
  • Embryo, Nonmammalian/abnormalities
  • Embryo, Nonmammalian/metabolism
  • Embryo, Nonmammalian/pathology
  • Gene Components/genetics*
  • Gene Expression/genetics*
  • Molecular Sequence Data
  • Nervous System/metabolism
  • Nervous System/pathology
  • Nervous System Malformations/genetics
  • Nervous System Malformations/pathology
  • Non-Fibrillar Collagens/genetics*
  • Oligodeoxyribonucleotides, Antisense/administration & dosage
  • Oligodeoxyribonucleotides, Antisense/genetics*
  • Phylogeny
  • Skin/metabolism
  • Skin/pathology
  • Skin Abnormalities/genetics
  • Skin Abnormalities/pathology
  • Zebrafish/abnormalities
  • Zebrafish/embryology
  • Zebrafish/genetics
  • Zebrafish Proteins/genetics*
PubMed: 20670682 Full text @ Matrix Biol.
The human COL17A1 gene encodes type XVII collagen (also known as the 180-kDa bullous pemphigoid antigen), an integral component of hemidesmosomes, attachment complexes providing integrity to the dermal-epidermal junction. Zebrafish, a facile model system to study skin development, displays fully developed hemidesmosomes at approximately 5days post-fertilization (dpf). We have identified two COL17A1 orthologues in the zebrafish genome, col17a1a and col17a1b, which are expressed in the skin and the neural system, respectively. The proteins coded by these genes have structural module organizations homologous to the human type XVII collagen. "Knock-down" of the expression of col17a1a with a specific morpholino targeting the 5' UTR of the gene resulted in blistering phenotype and in perturbations in the basement membrane zone. "Knock-down" of col17a1b expression resulted in ablation or in marked reduction of neuromasts in the lateral line. Thus, zebrafish has two COL17A1 orthologues which may have evolved tissue-specific functions during vertebrate development. Collectively, zebrafish provides a model system to study the molecular aspects of skin development and offers insights to the corresponding human diseases.