The invention provides saCNTF-DSF-LNP
composite nanoparticles as well as a preparation method and application of the saCNTF-DSF-LNP
composite nanoparticles, and particularly relates to application of the saCNTF-DSF-LNP to preparation of medicines for treating diseases related to
optic nerve injury. The method comprises the following steps: S1, preparing self-amplification CNTF
RNA, and naming the self-amplification CNTF
RNA as saCNTF; s2, preparing lipid nano particles entrapped with the
disulfiram DSF; s3, quickly adding the
ethanol phase containing the
disulfiram DSF-lipid mixture into the aqueous phase containing the saCNTF, and mixing, so that the nanoparticles are formed by self-
assembly; s4, purifying the nano particles by using an
ultrafiltration centrifugal device to obtain saCNTF-DSF-LNP; the invention provides a preparation method and application of saCNTF-DSF-LNP, the saCNTF-DSF-LNP can inhibit
neuroinflammation driven by acute
pyroptosis, and continuous neurotrophic support is provided for RGC survival and long-term
axon regeneration; according to saCNTF-DSF-LNP, continuous expression of CNTF is achieved through saRNA, efficient targeted delivery is achieved by means of LNP so as to reduce off-target
toxicity of DSF, and a new
treatment strategy is provided for
neuritis and degenerative diseases.