The invention belongs to the technical field of biological
medicine, and particularly discloses application of WAC knock-down adenovirus in preparation of
medicine for preventing and treating
arthritis cartilage injury, WAC
protein genes are inserted into PLVX lentiviral vectors to construct
transfection plasmids, the
transfection plasmids and
virus component expression plasmids PxpaX2 and PMD2G are co-transfected in HEK 293T cells,
virus supernate is collected after 48 hours, and the WAC knock-down adenovirus is obtained. The
amino acid sequence of the WAC
protein gene is as shown in SEQ ID NO. 1. Compared with the prior art, after the WAC is knocked down, the generation of
cartilage cell matrix metalloproteinases MMP3 and MMP13 and chemotactic factors CCL2 and CCL3 is reduced, so that the
cartilage injury caused by
arthritis can be prevented and treated; compared with the existing
clinical therapy, the technology starts from the
pathogenesis of
arthritis, and the purpose of treating the arthritis
cartilage injury is achieved by a method of reducing
cell WAC
protein expression and reducing abnormal
secretion of
cartilage cells; finally, compared with the existing
lentivirus / adenovirus therapy, the invention has stronger targeting to
cartilage cells, and is
safer and more effective.