High mobility group box-1 (HMGB1; amphoterin) is required for zebrafish brain development.

ABSTRACT: Hmgb1 (high mobility group box-1; amphoterin) is highly expressed in brain during early development of vertebrate and nonvertebrate species. However, its role in brain development remains elusive. Here we have cloned the zebrafish Hmgb1 and specifically manipulated Hmgb1 expression using injection of morpholino antisense oligonucleotides or Hmgb1 cRNA. The HMGB1 knockdown morphants produced by injection of three different morpholino oligonucleotides display a characteristic phenotype with smaller size, smaller brain width, and shorter distance between the eyes. Closer examination of the phenotype reveals severe defects in the development of the forebrain that largely lacks catecholaminergic neural networks. The HMGB1 morphant is deficient in survival and proliferation of neural progenitors

SUBMITTER: Zhao X 

PROVIDER: S-EPMC3123087 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature