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Identification of Polo-like kinase 1 as a potential therapeutic target in anaplastic thyroid carcinoma.
Cancer Res. 69, 1916-1923 (2009)
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.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
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Cited By
Cited By
Altmetric
7.514
2.720
47
48
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern
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
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