TY - JOUR
T1 - Ercc1 deficiency promotes tumorigenesis and increases cisplatin sensitivity in a Tp53 context-specific manner
AU - Jokic, Mladen
AU - Vlasic, Ignacija
AU - Rinneburger, Miriam
AU - Klumper, Niklas
AU - Spiro, Judith
AU - Vogel, Wenzel
AU - Offermann, Anne
AU - Kumpers, Christiane
AU - Fritz, Christian
AU - Schmitt, Anna
AU - Riabinska, Arina
AU - Wittersheim, Maike
AU - Michels, Sebastian
AU - Ozretic, Luka
AU - Florin, Alexandra
AU - Welcker, Daniela
AU - DenizAkyuz, Mehmet
AU - Nowak, Michael
AU - Erkel, Martin
AU - Wolf, Jurgen
AU - Buttner, Reinhard
AU - Schumacher, Bjorn
AU - Thomale, Jurgen
AU - Persigehl, Thorsten
AU - Maintz, David
AU - Perner, Sven
AU - Reinhardt, Hans Christian
PY - 2016/11/1
Y1 - 2016/11/1
N2 - KRAS-mutant lung adenocarcinoma is among the most common cancer entities and, in advanced stages, typically displays poor prognosis due to acquired resistance against chemotherapy, which is still largely based on cisplatin-containing combination regimens. Mechanisms of cisplatin resistance have been extensively investigated, and ERCC1 has emerged as a key player due to its central role in the repair of cisplatin-induced DNA lesions. However, clinical data have not unequivocally confirmed ERCC1 status as a predictor of the response to cisplatin treatment. Therefore, we employed an autochthonous mouse model of Kras-driven lung adenocarcinoma resembling human lung adenocarcinoma to investigate the role of Ercc1 in the response to cisplatin treatment. Our data show that Ercc1 deficiency in Tp53-deficient murine lung adenocarcinoma induces a more aggressive tumor phenotype that displays enhanced sensitivity to cisplatin treatment. Furthermore, tumors that relapsed after cisplatin treatment in our model develop a robust etoposide sensitivity that is independent of the Ercc1 status and depends solely on previous cisplatin exposure. Our results provide a solid rationale for further investigation of the possibility of preselection of lung adenocarcinoma patients according to the functional ERCC1-and mutational TP53 status, where functionally ERCC1-incompetent patients might benefit from sequential cisplatin and etoposide chemotherapy. Implications: This study provides a solid rationale for the stratification of lung adenocarcinoma patients according to the functional ERCC1-and mutational TP53 status, where functionally ERCC1-incompetent patients could benefit from sequential cisplatin and etoposide chemotherapy.
AB - KRAS-mutant lung adenocarcinoma is among the most common cancer entities and, in advanced stages, typically displays poor prognosis due to acquired resistance against chemotherapy, which is still largely based on cisplatin-containing combination regimens. Mechanisms of cisplatin resistance have been extensively investigated, and ERCC1 has emerged as a key player due to its central role in the repair of cisplatin-induced DNA lesions. However, clinical data have not unequivocally confirmed ERCC1 status as a predictor of the response to cisplatin treatment. Therefore, we employed an autochthonous mouse model of Kras-driven lung adenocarcinoma resembling human lung adenocarcinoma to investigate the role of Ercc1 in the response to cisplatin treatment. Our data show that Ercc1 deficiency in Tp53-deficient murine lung adenocarcinoma induces a more aggressive tumor phenotype that displays enhanced sensitivity to cisplatin treatment. Furthermore, tumors that relapsed after cisplatin treatment in our model develop a robust etoposide sensitivity that is independent of the Ercc1 status and depends solely on previous cisplatin exposure. Our results provide a solid rationale for further investigation of the possibility of preselection of lung adenocarcinoma patients according to the functional ERCC1-and mutational TP53 status, where functionally ERCC1-incompetent patients might benefit from sequential cisplatin and etoposide chemotherapy. Implications: This study provides a solid rationale for the stratification of lung adenocarcinoma patients according to the functional ERCC1-and mutational TP53 status, where functionally ERCC1-incompetent patients could benefit from sequential cisplatin and etoposide chemotherapy.
UR - http://www.scopus.com/inward/record.url?scp=84995387912&partnerID=8YFLogxK
U2 - 10.1158/1541-7786.MCR-16-0094
DO - 10.1158/1541-7786.MCR-16-0094
M3 - Journal articles
C2 - 27514406
AN - SCOPUS:84995387912
SN - 1541-7786
VL - 14
SP - 1110
EP - 1123
JO - Molecular Cancer Research
JF - Molecular Cancer Research
IS - 11
ER -