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Nappi, T.C.* ; Salerno, P.* ; Zitzelsberger, H. ; Carlomagno, F.* ; Salvatore, G.* ; Santoro, M.*

Identification of Polo-like kinase 1 as a potential therapeutic target in anaplastic thyroid carcinoma.

Cancer Res. 69, 1916-1923 (2009)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Anaplastic thyroid carcinoma (ATC) is one of the most aggressive and chemoresistant cancers. The serine/threonine kinase Polo-like kinase 1 (PLK1), a key regulator of multiple steps during mitotic progression, is highly expressed in ATC. Here, we used the BI 2536 PLK1 inhibitor on ATC and nontransformed thyroid follicular cell tines. Our data show that ATC cells are addicted to high levels of PLK1 activity for proliferation, survival, anchorage-independent growth, and tumorigenicity. On treatment with nanomolar doses of BI 2536, ATC cells progressed normally through S phase but died thereafter, directly from mitotic arrest. Immunofluorescence microscopy, immunoblot, and flow cytometry analysis showed that, on PLK1 blockade, ATC cells arrested in prometaphase with a 4N DNA content. Treated ATC cells accumulated phosphohistone H3 and displayed characteristic mitotic (Polo) spindle aberrations. Nontransformed thyroid cells were 3.2- to 18.4-fold less susceptible to BI 2536-induced cell cycle effects compared with ATC cells. These findings identify PLK1 as a promising target for the molecular therapy of ATC.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter small-molecule inhibitor; cancer-cells; tumor-growth; pik3ca gene; dna-damage; plk1; mutation; polo-like-kinase-1; depletion; cycle
Sprache englisch
Veröffentlichungsjahr 2009
HGF-Berichtsjahr 2009
ISSN (print) / ISBN 0008-5472
e-ISSN 1538-7445
Zeitschrift Cancer Research
Quellenangaben Band: 69, Heft: 5, Seiten: 1916-1923 Artikelnummer: , Supplement: ,
Verlag American Association for Cancer Research (AACR)
Verlagsort Philadelphia, Pa.
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Molecular Radiation Biology (IMS)
PSP-Element(e) G-500400-002
PubMed ID 19223553
Scopus ID 62449333305
Erfassungsdatum 2009-12-31