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Embryonic expression of type XIX collagen is transient and confined to muscle cells
Author(s) -
Sumiyoshi Hideaki,
Laub Friedrich,
Yoshioka Hidekatsu,
Ramirez Francesco
Publication year - 2001
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/1097-0177(2000)9999:9999<::aid-dvdy1099>3.0.co;2-w
Subject(s) - biology , myotome , extracellular matrix , in situ hybridization , microbiology and biotechnology , myogenin , embryogenesis , gene expression , skeletal muscle , anatomy , basement membrane , embryonic stem cell , embryo , myogenesis , somite , gene , genetics
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. © 2001 Wiley‐Liss, Inc.