The invention discloses gRNA of targeted
kallikrein, a recombinant vector, an
RNA delivery system, a
gene editing
system, a recombinant
cell and application of the gRNA, and relates to the technical field of
gene editing. The gRNA targeting the
kallikrein is designed and screened out, the gRNA has high
gene editing efficiency, through gene editing, the level of the
kallikrein in cells, tissues, organs and blood can be effectively reduced, and the
mRNA level of the coding gene of the kallikrein is reduced. The invention also provides a recombinant vector and a
virus particle, and animal experiments prove that the
virus particle can reduce
vascular permeability and treat hereditary
angioedema. The compound has a good effect of preventing and / or treating cardiovascular and cerebrovascular diseases, and has good
biological safety, so that the compound has a good application prospect in conveniently treating the cardiovascular and cerebrovascular diseases.