Transcription factor ZBP-89 in cancer growth and apoptosis.
ZBP-89, a Krüppel-type zinc-finger transcription factor that binds to GC-rich sequences, is involved in the regulation of cell growth and cell death. It maps to chromosome 3q21 and is composed of 794 residues. Having bifunctional regulatory domains, ZBP-89 may function as a transcriptional activator or repressor of variety of genes such as p16 and vimentin. ZBP-89 arrests cell proliferation through its interactions with p53 and p21(waf1). It is able to stabilize p53 through directly binding and enhance p53 transcriptional activity by retaining it in the nucleus. In addition, ZBP-89 potentiates in butyrate-induced endogenous p21(waf1) up-regulation. ZBP-89 is usually over-expressed in human cancer cells, where it can efficiently induce apoptosis through p53-dependent and -independent mechanisms. Moreover, ZBP-89 is capable of enhancing killing effects of several anti-cancer drugs. Therefore, ZBP-89 may be served as a potential target in cancer therapy.
Zhang
Chris Z Y
CZ
Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, N.T., Hong Kong.
Chen
George G
GG
Lai
Paul B S
PB
D000818:Animals; D017209:Apoptosis; D002453:Cell Cycle; D049109:Cell Proliferation; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000502:physiology*; D006801:Humans; D009369:Neoplasms / Q000209:etiology* / Q000473:pathology; D014157:Transcription Factors / Q000737:chemistry / Q000502:physiology*; D016159:Tumor Suppressor Protein p53 / Q000502:physiology
D004268:DNA-Binding Proteins; D014157:Transcription Factors; D016159:Tumor Suppressor Protein p53; C110951:ZNF148 protein, human