Cotransfection of Pax2 and Math1 promote in situ cochlear hair cell regeneration after neomycin insult.

Abstract:

:The ideal strategy for hair cell regeneration is promoting residual supporting cell proliferation followed by induction of hair cell differentiation. In this study, cultured neonatal mouse organs of Corti were treated with neomycin to eliminate hair cells followed by incubation with recombined adenovirus expressing Pax2 and/or Math1. Results showed that overexpression of Pax2 significantly promoted proliferation of supporting cells. The number of BrdU⁺/myosin VIIA⁺ cells increased significantly in hair cell pre-existing region two weeks after adenovirus infection in Ad-Pax2-IRES-Math1 group compared to Ad-Pax2 and Ad-Math1 groups. This indicated that cotransfection of Pax2 and Math1 induced supporting cells to proliferate and differentiate into hair cells in situ. Most new hair cells were labeled by FM1-43 suggesting they acquired certain function. The results also suggest that inducing proliferating cells rather than quiescent cells to differentiate into hair cells by forced expression of Math1 is feasible for mammalian hair cell regeneration.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Chen Y,Yu H,Zhang Y,Li W,Lu N,Ni W,He Y,Li J,Sun S,Wang Z,Li H

doi

10.1038/srep02996

subject

Has Abstract

pub_date

2013-10-21 00:00:00

pages

2996

issn

2045-2322

pii

srep02996

journal_volume

3

pub_type

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