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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-5996
Vol. 14, No. 2, 2015, pp. 187-194
Bioline Code: pr15026
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 14, No. 2, 2015, pp. 187-194

 en Preparation and Characterization of Nanoliposomal Beta- Cryptoxanthin and its Effect on Proliferation and Apoptosis in Human Leukemia Cell Line K562
Gharib, Amir; Faezizadeh, Zohreh & Godarzee, Masoud


Purpose: To prepare beta-cryptoxanthin-loaded nanoliposomes and evaluate their anti-proliferative activity in leukemia K562 cell line, compared to free beta-cryptoxanthin.
Methods: Beta-cryptoxanthin-loaded nanoliposomes were prepared by extrusion method. Morphological characterization of the nanoliposomes was performed by cryo-transmission electron microscopy (cryo-TEM). The anti-proliferation effect of beta-cryptoxanthin (BC) in free and liposomal forms on K562 cell line was studied using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide assay. Apoptotic activity, following treatment with beta-cryptoxanthin in the free and liposomal forms, was detected using flow cytometry.
Results: Entrapment efficiency of beta-cryptoxanthin was 86.3 % ± 1.0. Cryo-TEM analysis revealed that the nanoliposomes have spherical shapes. In all conditions, beta-cryptoxanthin-loaded nanoliposomes exhibited greater anti-proliferative activity than than the free beta-cryptoxanthin (p < 0.001). Furthermore, in the presence of beta-cryptoxanthin-loaded nanoliposomes, the proportion of apoptotic cells was higher for free beta-cryptoxanthin (p < 0.001).
Conclusion: The data obtained indicate that beta-cryptoxanthin, especially in the liposomal form, inhibits the growth of K562 cells and may therefore provide a basis for the development of leukemia therapies.

Beta-cryptoxanthin; Nanoliposome; Anti-proliferative; Apoptosis; Flow cytometry; Leukemia

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