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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-9827
Vol. 12, No. 4, 2013, pp. 503-509
Bioline Code: pr13076
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 12, No. 4, 2013, pp. 503-509

 en Anti-HIV Effect of Liposomes Bearing CXCR4 Receptor Antagonist N15P
Zhao, Yingxia; Sun, Hanxiao; Li, Xiuying; Mo, Xuemei & Zhang, Guang

Abstract

Purpose: To evaluate lymphatic system targeting and inhibitory ability of N15P nano-liposomal preparation (naLipo-N15P) of CXCR4 receptor antagonist in HIV infection.
Methods: Chemotactic and chemotaxic inhibition activity assays were used to analyze the biological activity of naLipo-N15P. The anti-HIV potential of NaLipo-N15P in vitro was evaluated when NaLipo-N15P combined with the peripheral blood mononuclear cells of Macaca fascicularis which carry the Simian immunodeficiency virus. Furthermore, the anti-HIV potential in vivo of NaLipo-N15P was evaluated by the plasma concentration and tissue distribution (Ki)
Results: The half-maximal inhibitory concentration of naLipo-N15P binding to CXCR4 as an antagonist in competition with SDF-1α was 1.89 pM while Ki was 2.4 pM. Viral load was 289 ± 45. NaLipo- N15P majorly accumulated in liver and spleen.
Conclusion: When N15P is encapsulated into nano-liposomes, it not only retains specific binding to CXCR4 and facilitates cell-type-specific targeting of nano-liposomes to PBMCs with high CXCR4 expression, but also shows enhanced anti-HIV effect. Therefore, we propose that naLipo-N15P as a CXCR4 antagonist will play an important role in inflammation and blocking of HIV infection.

Keywords
Antagonist; CXCR4; Liposomes; Receptor; Inflammation; HIV

 
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