http://jcps.bjmu.edu.cn

Journal of Chinese Pharmaceutical Sciences ›› 2021, Vol. 30 ›› Issue (4): 289-305.DOI: 10.5246/jcps.2021.04.024

• Original articles • Previous Articles     Next Articles

QAP21 reduces stemness and mobility of metastatic breast cancer cells involving D1DR activation

Ling Yong1, Ye Yao1, Mengyi Han1, Xiaoxue Yan2, Qingyu Yao1, Yuchen Guo1, Junsheng Xue1, Guoshu Chen2,*(), Tianyan Zhou1,*()   

  1. 1 Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System, Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
    2 Chemical Basic Laboratory, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
  • Received:2020-05-20 Revised:2020-07-11 Accepted:2020-08-15 Online:2021-04-30 Published:2021-04-30
  • Contact: Guoshu Chen, Tianyan Zhou

Abstract:

Breast cancer is the second leading cause of cancer death in women mainly due to metastasis, which is closely related to cancer stemness. Evidence has shown that cancer stem-like cells (CSCs), which are responsible for cancer stemness, can be decreased by activating dopamine D1 receptor (D1DR). In the present study, we aimed to explore the pharmacological effects as well as the underlying mechanisms of QAP21, a newly synthesized compound that can be orally administered, in metastatic breast cancer cells. Our results showed that QAP21 dose-dependently inhibited the ability of colony formation in 4T1 and MDA-MB-231 cells. Cell mobility, including cell migration and invasion, was also remarkably inhibited. Besides, QAP21 significantly inhibited mammosphere formation and decreased CSC proportion, indicating reduced cancer stemness. We further verified that the nuclear factor-kappa B (NF-κB)/Akt/epithelial-mesenchymal transition (EMT) pathway was markedly impacted by QAP21 treatment. Moreover, QAP21 up-regulated the expressions of D1DR and its second messengers, including cAMP and cGMP, which can be increased when D1DR is activated. SCH 23390, a specific D1DR antagonist, partially or completely reversed the above-mentioned effects of QAP21, indicating that D1DR activation might be involved in the underlying mechanism of QAP21. In summary, QAP21 effectively reduced breast cancer stemness and cell mobility, indicating its potential use for metastatic breast cancer therapy.

Key words: Metastatic breast cancer, Dopamine D1 receptor, Cancer stemness, Cell mobility, QAP21

Supporting: