Embryonic expression of type XIX collagen is transient and confined to muscle cells

Hideaki Sumiyoshi, Friedrich Laub, Hidekatsu Yoshioka, Francesco Ramirez

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


Type XIX collagen is a poorly characterized extracellular matrix component thought to be involved in the formation of specialized basement membrane zones. Here we examined the developmental expression of the mouse gene (Col19a1) by in situ hybridization. Col19a1 expression during embryogenesis commences at ∼E9.5 in the myotome and with a pattern that closely follows the myogenic regulatory factor myf-5. Like myf-5, Col19a1 transcription gradually decreases in differentiating skeletal muscle progenitors and concomitantly to increased myogenin gene expression. Transient expression of Col19a1 in muscular tissues is confined to a few sites of the developing embryo, such as limbs, tongue, and the smooth muscle layers of the stomach and esophagus. Additional non-muscular sites of Col19a1 activity include the skin of the E16.5 embryos and the cerebral cortex and hippocampus of the new born brain. Unlike all other tissues, expression of Col19a1 in the central nervous system gradually increases after birth.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalDevelopmental Dynamics
Issue number2
StatePublished - 2001
Externally publishedYes


  • Basement membranes
  • Collagen
  • Esophageal transdifferentiation
  • Extracellular matrix
  • Myogenesis


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