Preclinical activity of selinexor in combination with eribulin in uterine leiomyosarcoma. Exp Hematol Oncol 2023 Sep 15;12(1):78
Date
09/16/2023Pubmed ID
37715291Pubmed Central ID
PMC10503035DOI
10.1186/s40164-023-00443-wScopus ID
2-s2.0-85171339411 (requires institutional sign-in at Scopus site) 1 CitationAbstract
Leiomyosarcoma (LMS) is a rare soft tissue sarcoma (STS) that begins in smooth muscle tissue and most often initiates in the abdomen or uterus. Compared with other uterine cancers, uterine LMS (ULMS) is an aggressive tumor with poor prognosis and a high risk of recurrence and death, regardless of the stage at presentation. Selinexor is a first-in-class selective inhibitor of nuclear export (SINE) compound that reversibly binds to exportin 1 (XPO1), thereby reactivating tumor suppressor proteins and downregulating the expression of oncogenes and DNA damage repair (DDR) proteins. In this study, we evaluated the effects of selinexor in combination with doxorubicin and eribulin in the LMS tumor model in vitro and in vivo. Treatment of selinexor combined with eribulin showed synergistic effects on tumor growth inhibition in SK-UT1 LMS-derived xenografts. Immunohistochemical assessment of the tumor tissues showed a significantly reduced expression of proliferation (Ki67) and XPO1 markers following combination therapy compared to the control group. Global transcriptome analyses on tumor tissue revealed that the combination therapy regulates genes from several key cancer-related pathways that are differentially expressed in ULMS tumors. To our knowledge, this is the first preclinical study demonstrating the anti-cancer therapeutic potential of using a combination of selinexor and eribulin in vivo. Results from this study further warrant clinical testing a combination of chemotherapy agents with selinexor to reduce the morbidity and mortality from ULMS.
Author List
Mittal S, Kadamberi IP, Chang H, Wang F, Kumar S, Tsaih SW, Walker CJ, Chaluvally-Raghavan P, Charlson J, Landesman Y, Pradeep SAuthors
Pradeep Chaluvally-Raghavan PhD Associate Professor in the Obstetrics and Gynecology department at Medical College of WisconsinJohn A. Charlson MD Associate Professor in the Medicine department at Medical College of Wisconsin
Sunila Pradeep PhD Associate Professor in the Obstetrics and Gynecology department at Medical College of Wisconsin
Shirng-Wern Tsaih Research Scientist II in the Obstetrics and Gynecology department at Medical College of Wisconsin
