Methods and compositions involved in cell growth, neoplasia and immunoregulation

摘要

A peptide, Hel-N1, which can bind to a 3'-untranslated mRNA sequence (which encompasses the "instability sequence") that is uniquely present in the messenger RNAs that encode oncoproteins and lymphokines, and mediates the specific destruction of the messenger RNAs, is described. Full-length Hel-N1 is capable of suppressing cell growth and causing cellular differentiation. Hel-N1 possess three RNA recognition motifs. One of these forms an RNA-binding domain which, when transfected alone into cells, causes them to undergo rapid growth.