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Localization of type II collagen, long form α1(IX) collagen, and short form α1(IX) collagen transcripts in the developing chick notochord and axial skeleton
Author(s) -
Swiderski Ruth E.,
Solursh Michael
Publication year - 1992
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/aja.1001940205
Subject(s) - notochord , type ii collagen , biology , chondrogenesis , collagen, type i, alpha 1 , axial skeleton , cartilage , anatomy , in situ hybridization , type i collagen , microbiology and biotechnology , skeleton (computer programming) , gene expression , embryogenesis , gene , extracellular matrix , endocrinology , embryo , genetics
In this study we compare, by in situ hybridization, the spatial and temporal expression patterns of transcripts of avian type II collagen and the long and short forms of the (α1) chain of type IX collagen during the development of the notochord and axial skeleton. We observed type II collagen and short form type IX collagen transcripts in the developing (stage 25–28) nonchondrogenic notochord. Conversely, long form type IX transcripts were not detectable in the notochord or perinotochordal sheath. Interestingly, all three transcripts colocalized in the developing chondrogenic vertebrae of the axial skeleton as well as in the chondrocranium and Meckel's cartilage. The expression of the short form of type IX collagen in these regions was more restricted than that of the long form. This report provides additional support for a complex regulatory pathway of cartilage marker gene expression in chondrogenic vs. nonchondrogenic tissues during avian embryogenesis. © 1992 Wiley‐Liss, Inc.