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  • Title: The chicken embryonic mesonephros synthesizes link protein, an extracellular matrix molecule usually found in cartilage.
    Author: Stirpe NS, Dickerson KT, Goetinck PF.
    Journal: Dev Biol; 1990 Feb; 137(2):419-24. PubMed ID: 1689263.
    Abstract:
    Link protein is a macromolecule that is relatively abundant in the extracellular matrix of cartilage, where it acts as a stabilizing component in aggregates of the large chondroitin sulfate proteoglycan and hyaluronic acid. In the present study, link protein transcripts were demonstrated in the chicken embryonic mesonephros by RNA in situ hybridization using a cartilage link protein cDNA probe. The link protein transcripts of the mesonephros are of the same size as those seen in cartilage. In addition, mesonephroi contain a protein that is immunologically reactive with a link protein polyclonal antiserum and this protein is identical in size to link protein isolated from cartilage. No transcripts for cartilage proteoglycan core protein were detected in the mesonephros. Type II collagen and cartilage matrix protein transcripts were also not detectable in the mesonephros. From previous data on chondrogenesis in the developing limb bud, the transcription of link protein and the proteoglycan core protein genes appeared to be spatially and temporally regulated in a coordinated fashion. However, the presence of link protein transcripts in the mesonephros, independent of cartilage proteoglycan core protein gene expression, indicates that these genes can be regulated independently of each other.
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