Gene expression profile of rabbit cartilage by expressed sequence tag analysis

Gene
Hyuck Joon KwonKazunori Yasuda

Abstract

Although the rabbit is commonly used as an animal model for the in vivo study of cartilage formation or regeneration, genetic approaches to the rabbit cartilage are rare. We constructed an expressed sequence tag (EST) library from rabbit cartilage tissue for the first time to establish the foundations for genetic study on rabbit cartilage. From our results, we identified 2387 unique genes among 4885 clones, corresponding to 1839 matched to characterized genes including 1618 genes with known function and 548 uncharacterized and novel genes. Gene expression profiles based on EST frequency show that type II collagen (COL2A1) and type X collagen (COL10A1) among collagen clones, proteoglycan 4 (PRG4) and decorin (DCN) among proteoglycan clones, and cartilage oligomeric matrix protein (COMP) and matrix Gla protein (MGP) among other extracellular matrix clones, are highly expressed in rabbit cartilage. In addition, gene expression analysis based on real-time PCR of these major extracellular matrix constituents showed that expression of col2a1 and col10a1 remains constant whereas the expression of prg4, dcn, and comp reveals substantial change with rabbit age. This EST library will provide a valuable resource with which to identify gen...Continue Reading

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