J 2020

The CHK1 inhibitor MU380 significantly increases the sensitivity of human docetaxel-resistant prostate cancer cells to gemcitabine through the induction of mitotic catastrophe

DRÁPELA, Stanislav, PrashantKumar KHIRSARIYA, Wytske M VAN WEERDEN, Radek FEDR, Tereza SUCHÁNKOVÁ et. al.

Basic information

Original name

The CHK1 inhibitor MU380 significantly increases the sensitivity of human docetaxel-resistant prostate cancer cells to gemcitabine through the induction of mitotic catastrophe

Authors

DRÁPELA, Stanislav (203 Czech Republic, belonging to the institution), PrashantKumar KHIRSARIYA (356 India, belonging to the institution), Wytske M VAN WEERDEN (528 Netherlands), Radek FEDR (203 Czech Republic), Tereza SUCHÁNKOVÁ (203 Czech Republic), Diana BÍZOVA (203 Czech Republic), Jan ČERVENÝ (203 Czech Republic), Aleš HAMPL (203 Czech Republic, belonging to the institution), Martin PUHR (40 Austria), William R WATSON (372 Ireland), Zoran CULIG (372 Ireland), Lumír KREJČÍ (203 Czech Republic, belonging to the institution), Kamil PARUCH (203 Czech Republic, belonging to the institution) and Karel SOUČEK (203 Czech Republic, guarantor, belonging to the institution)

Edition

Molecular oncology, Hoboken, Wiley, 2020, 1574-7891

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10608 Biochemistry and molecular biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.603

RIV identification code

RIV/00216224:14310/20:00116570

Organization unit

Faculty of Science

UT WoS

000548858200001

Keywords in English

castration-resistant prostate cancer; checkpoint kinase 1; docetaxel resistance; gemcitabine; mitotic catastrophe; MU380

Tags

International impact, Reviewed
Změněno: 20/2/2023 08:13, Mgr. Marie Šípková, DiS.

Abstract

V originále

As treatment options for patients with incurable metastatic castration-resistant prostate cancer (mCRPC) are considerably limited, novel effective therapeutic options are needed. Checkpoint kinase 1 (CHK1) is a highly conserved protein kinase implicated in the DNA damage response (DDR) pathway that prevents the accumulation of DNA damage and controls regular genome duplication. CHK1 has been associated with prostate cancer (PCa) induction, progression, and lethality; hence, CHK1 inhibitors SCH900776 (also known as MK-8776) and the more effective SCH900776 analog MU380 may have clinical applications in the therapy of PCa. Synergistic induction of DNA damage with CHK1 inhibition represents a promising therapeutic approach that has been tested in many types of malignancies, but not in chemoresistant mCRPC. Here, we report that such therapeutic approach may be exploited using the synergistic action of the antimetabolite gemcitabine (GEM) and CHK1 inhibitors SCH900776 and MU380 in docetaxel-resistant (DR) mCRPC. Given the results, both CHK1 inhibitors significantly potentiated the sensitivity to GEM in a panel of chemo-naive and matched DR PCa cell lines under 2D conditions. MU380 exhibited a stronger synergistic effect with GEM than clinical candidate SCH900776. MU380 alone or in combination with GEM significantly reduced spheroid size and increased apoptosis in all patient-derived xenograft 3D cultures, with a higher impact in DR models. Combined treatment induced premature mitosis from G1 phase resulting in the mitotic catastrophe as a prestage of apoptosis. Finally, treatment by MU380 alone, or in combination with GEM, significantly inhibited tumor growth of both PC339-DOC and PC346C-DOC xenograft models in mice. Taken together, our data suggest that metabolically robust and selective CHK1 inhibitor MU380 can bypass docetaxel resistance and improve the effectiveness of GEM in DR mCRPC models. This approach might allow for dose reduction of GEM and thereby minimize undesired toxicity and may represent a therapeutic option for patients with incurable DR mCRPC.

Links

EF16_025/0007381, research and development project
Name: Preklinická progrese nových organických sloučenin s cílenou biologickou aktivitou
LM2015063, research and development project
Name: Národní infrastruktura chemické biologie (Acronym: CZ-­OPENSCREEN)
Investor: Ministry of Education, Youth and Sports of the CR