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CXCR4-targeted Nanoparticles Reduce Cell Viability, Induce Apoptosis and Inhibit SDF-1α Induced BT-549-Luc Cell
Chuda Chittasupho1, Prartana Kewsuwan2, Takashi Murakami3
1Department of Pharmaceutical Technology, Faculty of Pharmacy, Srinakharinwirot University, Ongkarak, Nakhonnayok, 26120. Thailand.
Background:
CXCR4 possesses a critical role in several intracellular events such as chemotaxis, invasion and adhesion, which are associated with metastasis of cancer cell.
Objective:
In this study, CXCR4 targeted polymeric nanoparticle was developed for delivering cytotoxic drug and blocking the chemokine induced migration of cells expressing CXCR4.
Method:
A peptide which was a linear form of CXCR4 antagonist (LFC131) was attached to PLGA nanoparticles (LFC131-NPs) and PLGA nanoparticles encapsulating DOX (LFC131-DOX-NPs). The cellular binding and internalization of LFC131-DOX-NPs were investigated.
Results:
The binding and internalization of LFC131-DOX-NPs were higher and more rapidly compared to unconjugated NPs. LFC131-NPs blocked SDF-1α induced migration of BT-549-Luc cells. MTT assays demonstrated that LFC131-NPs and LFC131-DOX-NPs decreased cell viability in a dose dependent manner in 24, 72 and 120 h incubation.
Conclusion:
A treatment concept of blocking breast cancer cell migration from interaction with SDF- 1α by using LFC131-NPs and then attacking breast cancer cells with doxorubicin might increase the efficacy of current breast cancer treatment.
