Amphiregulin is a vitamin D3 target gene in squamous cell and breast carcinoma.
1alpha,25-Dihydroxyvitamin D(3) [1,25(OH)2D3] inhibits growth of cells derived from a variety of tumors in vitro and in vivo. Proliferation in vitro of human SCC25 cells, derived from a primary squamous cell carcinoma (SCC) of the tongue, was blocked by 1,25(OH)2D3 and its analog EB1089. A similar effect was observed with 13-cis retinoic acid (RA), which has been used in chemoprevention of SCC. We identified amphiregulin, a member of the epidermal growth factor family, as a 1,25(OH)2D3 target gene in SCC25 cells. Induction of amphiregulin mRNA by 1,25(OH)2D3 was rapid and sustained over 48 h, and was unaffected by cycloheximide. 1,25(OH)2D3 also induced amphiregulin mRNA in estrogen receptor-positive and -negative human breast cancer cell lines, but not in LNCaP human prostate cancer cells. RAR- or RXR-specific retinoids did not affect amphiregulin mRNA levels in SCC25 cells; however, 13-cis RA partially blocked the response to 1,25(OH)2D3. Amphiregulin partially inhibited growth of SCC25 cells in culture. Our data show that amphiregulin is a 1,25(OH)2D3 target gene, and suggest that its induction may contribute to the growth inhibitory effects of 1,25(OH)2D3.
Akutsu
N
N
Department of Physiology, McGill University, Montréal, Canada.
Bastien
Y
Y
Lin
R
R
Mader
S
S
White
J H
JH
D066258:Amphiregulin; D000970:Antineoplastic Agents / Q000494:pharmacology; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology / Q000517:prevention & control; D002117:Calcitriol / Q000031:analogs & derivatives* / Q000494:pharmacology; D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000473:pathology / Q000517:prevention & control; D002455:Cell Division / Q000187:drug effects; D002762:Cholecalciferol / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D066255:EGF Family of Proteins; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D006023:Glycoproteins / Q000235:genetics*; D006133:Growth Substances / Q000235:genetics*; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins; D015474:Isotretinoin / Q000494:pharmacology; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics / Q000378:metabolism; D014407:Tumor Cells, Cultured
C587848:AREG protein, human; D066258:Amphiregulin; D000970:Antineoplastic Agents; D066255:EGF Family of Proteins; D006023:Glycoproteins; D006133:Growth Substances; D036341:Intercellular Signaling Peptides and Proteins; D012333:RNA, Messenger; D002762:Cholecalciferol; D015474:Isotretinoin; D002117:Calcitriol; C078903:seocalcitol