The invention discloses a preparation method and application of a porous GelMA microneedle for delivering AIE molecules based on HSF derived
exosome. The preparation method comprises the following steps: S1, preparing TTMN molecules; s2, dispersing DPPC and Chol in
chloroform, performing water bath
evaporation at 50 DEG C to form a thin film, hydrating the thin film in PBS, incubating to enable DPPC and Chol to form a
liposome structure again, and uniformly dispersing TTMN molecules in the
liposome structure to obtain TL; s3, extracting an
exosome from the HSF cells; s4, loading the TL into the
exosome by utilizing an
electroporation technology, so as to obtain TE; s5, preparing the GelMA; and S6, mixing the GelMA with the TE, so that the TE is uniformly dispersed in the GelMA to obtain a
mixed solution, injecting the
mixed solution into a microneedle mold, and irradiating with 405nm
laser to obtain the porous GelMA microneedle. According to the invention, high-efficiency treatment of
hypertrophic scars is realized, and the
system has a remarkable
drug delivery effect, an innovative
photodynamic therapy, a high-efficiency
scar tissue remodeling effect and good
biological safety and stability, and has important clinical application value and market prospect.