Application of PC2 gene or recombinant virus expressing PC2 gene to preparation of medicament for treating osteoarthritis

The invention discloses application of a PC2 gene or a recombinant virus expressing the PC2 gene to preparation of a medicament for treating osteoarthritis. The invention provides application of the PC2 gene to the preparation of a medicament for treating osteoarthritis. The PC2 gene is a gene coded with a PC2 protein.The PC2 protein is a protein consists of an amino acid sequence shown as a sequence 1 in a sequence table. As proved by the inventor of the invention, the PC2 gene has a definite treatment effect on osteoarthritis, so that a new thought is provided for the development of a gene applied to osteoarthritis treatment, and the selection range of clinical gene treatment is enlarged. The PC2 gene has important application and popularization value.