title: The prolyl isomerase Pin1 in breast development and cancer.
abstract: The prolyl isomerase Pin1 specifically isomerizes certain phosphorylated Ser/Thr-Pro bonds and thereby regulates various cellular processes. Pin1 is a target of several oncogenic pathways and is overexpressed in human breast cancer. Its overexpression can lead to upregulation of cyclin D1 and transformation of breast epithelial cells in collaboration with the oncogenic pathways. In contrast, inhibition of Pin1 can suppress the transformation of breast epithelial cells. In addition, Pin1 knockout in mice prevents massive proliferation of breast epithelial cells during pregnancy. Pin1 plays a pivotal role in breast development and may be a promising new anticancer target.
authors.affiliation: Cancer Biology Program, Division of Hematology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA. gwulf@caregroup.harvard.edu
authors.forename: Gerburg
authors.initials: G
authors.lastname: Wulf
authors.forename: Akihide
authors.initials: A
authors.lastname: Ryo
authors.forename: Yih-Cherng
authors.initials: YC
authors.lastname: Liou
authors.forename: Kun Ping
authors.initials: KP
authors.lastname: Lu
mesh_terms: D000818:Animals; D001940:Breast / Q000166:cytology / Q000201:enzymology / Q000254:growth & development; D001943:Breast Neoplasms / Q000201:enzymology / Q000235:genetics / Q000473:pathology*; D002471:Cell Transformation, Neoplastic; D004847:Epithelial Cells / Q000166:cytology / Q000201:enzymology; D005260:Female; D015971:Gene Expression Regulation, Enzymologic; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008321:Mammary Glands, Animal / Q000201:enzymology / Q000254:growth & development*; D051379:Mice; D000072340:NIMA-Interacting Peptidylprolyl Isomerase; D019696:Peptidylprolyl Isomerase / Q000378:metabolism*
chemical_list: D000072340:NIMA-Interacting Peptidylprolyl Isomerase; C000606846:PIN1 protein, human; D019696:Peptidylprolyl Isomerase; C000606850:Pin1 protein, mouse