Promotion of Neurite Outgrowth from Fetal Hippocampal Cells by TNF-α Receptor 1-Derived Peptide

Cell Transplantation

Article

Kazumi Kajiwara¹  Masao Tanihara¹  Shin-Ichi Ogata¹ 

[1] Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan;

关键词: Tumor necrosis factor receptor 1 (TNFR1);    Neural stem cells;    Synthetic peptide;    Differentiation;    Alginate gel;   

DOI  :  10.3727/000000005783982639

来源: Sage Journals

【 摘 要 】

Cytokines such as tumor necrosis factor-α (TNF-α), FasL, and TNF-related apoptosis-inducing ligand (TRAIL) induce apoptosis or inflammation through binding to their specific receptors, TNFR1, Fas, and DR5, respectively. We have previously reported ligand-binding and cell death-inhibiting synthetic peptides, which were designed based on the crystal structure of a ligand–receptor complex and the homology of the amino acid sequence among the death receptor family members. Here we show that, among these death receptor-derived peptides, the TNFR1-derived peptide specifically arrested cell proliferation and promoted cell adhesion of fetal rat (E16) hippocampal cells, and promoted neurite outgrowth from hippocampus-derived neurospheres cultured with the addition of the peptide or cultured on a peptide-coated surface. Furthermore, among these death receptor-derived peptides, marked neurite outgrowth was observed only when the neurospheres were cultured on a TNFR1-derived peptide-conjugated covalently cross-linked alginate gel. The neurites from the neurospheres positively immunostained with an antibody against neurofilaments. These results suggest that the TNFR1-derived peptide promotes neuronal differentiation of the hippocampal neural stem cells and the TNFR1-derived peptide-conjugated covalently cross-linked alginate gel may be a useful material for assisting neural stem cell transplantation.

【 授权许可】

Unknown   
© 2005 Cognizant Comm. Corp.