LLL12B, a small molecule STAT3 inhibitor, induces growth arrest, apoptosis, and enhances cisplatin-mediated cytotoxicity in medulloblastoma cells.
LLL12B, a small molecule STAT3 inhibitor, induces growth arrest, apoptosis, and enhances cisplatin-mediated cytotoxicity in medulloblastoma cells.
复制标题
DOI:
10.1038/s41598-021-85888-x
复制
发表时间:
2021-03-22
影响因子:
4.6
通讯作者:
Lin J
中科院分区:
文献类型:
--
作者:
Chen X;Pan L;Wei J;Zhang R;Yang X;Song J;Bai RY;Fu S;Pierson CR;Finlay JL;Li C;Lin J
Signal Transducer and Activator of Transcription 3 (STAT3) is a transcription factor and an oncogene product, which plays a pivotal role in tumor progression. Therefore, targeting persistent STAT3 signaling directly is an attractive anticancer strategy. The aim of this study is to test the efficacy of a novel STAT3 small molecule inhibitor, LLL12B, in suppressing medulloblastoma cells in vitro and tumor growth in vivo. LLL12B selectively inhibited the induction of STAT3 phosphorylation by interleukin-6 but not induction of STAT1 phosphorylation by INF-γ. LLL12B also induced apoptosis in human medulloblastoma cells. In addition, LLL12B exhibited good oral bioavailability in vivo and potent suppressive activity in tumor growth of medulloblastoma cells in vivo. Besides, combining LLL12B with cisplatin showed greater inhibition of cell viability and tumorsphere formation as well as induction of apoptosis comparing to single agent treatment in medulloblastoma cells. Furthermore, LLL12B and cisplatin combination exhibited greater suppression of medulloblastoma tumor growth than monotherapy in vivo. The present study supported that LLL12B is a novel therapeutic agent for medulloblastoma and the combination of LLL12B with a chemotherapeutic agent cisplatin may be an effective approach for medulloblastoma therapy.
登录
查看更多内容
影响因子:
5.3
作者:
Narimatsu, M;Maeda, H;Hirano, T
通讯作者:
Hirano, T
影响因子:
8
作者:
Garg N;Bakhshinyan D;Venugopal C;Mahendram S;Rosa DA;Vijayakumar T;Manoranjan B;Hallett R;McFarlane N;Delaney KH;Kwiecien JM;Arpin CC;Lai PS;Gómez-Biagi RF;Ali AM;de Araujo ED;Ajani OA;Hassell JA;Gunning PT;Singh SK
通讯作者:
Singh SK
影响因子:
7.2
作者:
McIlwain, David R.;Berger, Thorsten;Mak, Tak W.
通讯作者:
Mak, Tak W.
影响因子:
15.9
作者:
Dunkel, Ira J.;Gardner, Sharon L.;Finlay, Jonathan L.
通讯作者:
Finlay, Jonathan L.
影响因子:
4.8
作者:
Boulares, AH;Yakovlev, AG;Smulson, M
通讯作者:
Smulson, M