Composition for promoting hair cell regeneration and hearing recovery and application thereof
A composition and hair cell technology, applied in the field of biomedicine, can solve problems such as difficulty in achieving hair cell differentiation, maturation and survival, low efficiency of hair cell transdifferentiation, hair cell death, etc., so as to promote the reprogramming and maturation of hair cells. , Efficient hair cell differentiation, the effect of promoting hair cell regeneration and maturation
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[0098] Experimental materials: Mouse strains include:
[0099] 1. Lgr5-EGFP-IRES-CreER (#008875) (Barker et al., 2007);
[0100] 2. Plp1-CreER (#005975) (Doerflinger et al., 2003);
[0101] 3. Sox2-CreER (#017593) (Arnold et al., 2011) and Rosa26-ACTB-mTmG (#007676) (Muzumdar et al., 2007) mice were obtained from Jackson Laboratory.
[0102] 4. Rosa26-CAG-STOP-Cas9-tdTomato (Rosa26-tdTomato) mice were obtained from Gempharmatech Inc in China.
[0103] 5. Pou4f3-EGFP-IRES-CreER (Pou4f3(EGFP / +)) knock-in mice were obtained using CRISPR-Cas9 gene editing technology: two cutting strategies were used to insert the EGFP-IRES-CreER cassette into the Pou4f3 locus. Two Pou4f3 sgRNAs: 5'-AGTACGGGGTGCATGCCGAA-3' and 5'-TGAACGGATGATTCTTGCCG-3' were cloned into PX330 plasmid and generated by in vitro transcription (T7 as promoter) using MEGA shortscript kit (Ambion, Am1354, USA) sgRNA. To keep the Pou4f3 regulatory elements intact, an EGFP-IRES-CreER cassette was integrated at the firs...
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