Summary
This study aimed to prepare SLC7A5 transporters targeted liposomes of Ribociclib (RB) by stear(o)yl conjugation of Phe, Asp, Glu amino acids to liposomes as targeting moieties. The liposomes were optimized for their formulations. Cell analysis on two cell lines of MCF-7 and NIH-3T3 were done including; cell viability test by MTT assay, cellular uptake, and cell cycle arrest by flow cytometry. The optimal liposomes showed the particle size of 123.6 ± 1.3 nm, drug loading efficiency and release efficiency of 83.87% ± 1.33% and 60.55% ± 0.46%, respectively. The RB loaded liposomes showed no hemolysis activity. Targeted liposomes increased cytotoxicity on MCF-7 cells more significantly than NIH-3T3 cells. Cell flow cytometry indicated that targeted liposomes uptake was superior to plain (non-targted) liposomes and free drug. Free drug and RB-loaded liposomes interrupted cell cycle in G1. However, amino acid-targeted liposomes arrested cells more than the free drug at this stage. Targeted liposomes reduced cell cycle with more interruption in the G2/M phase compared to the negative control.
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Acknowledgements
The authors appreciate financial support of the project by Vice Chancellery of Research of Isfahan University of Medical Sciences.
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This work has been supported by Isfahan University of Medical Sciences (project No: 399182).
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Mahtab Afsharzadeh has done the entire project, Jaleh Varshosaz is the supervisor of the work and corresponding author of the manuscript, Mina Mirian has helped in cellular studies, and Farshid Hassanzadeh has helped in chemical synthesis of amino acid conjugates and interpretation of spectra.
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Afsharzadeh, M., Varshosaz, J., Mirian, M. et al. Targeted delivery of liposomal Ribociclib to SLC7A5 transporters in breast cancer cells. Invest New Drugs 42, 89–105 (2024). https://doi.org/10.1007/s10637-023-01409-9
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DOI: https://doi.org/10.1007/s10637-023-01409-9