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Quercetin-loaded platelets as a potential targeted therapy for glioblastoma multiforme cell line U373-MG.

Authors:
Sayali Bhandarkar Bala Prabhakar Pravin Shende

Biotechnol J 2021 Dec 12;16(12):e2100271. Epub 2021 Oct 12.

Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS, Mumbai, Maharashtra, India.

Over the globe, the incidence of glioblastoma multiforme (GM) is very low, that is, 1-4 cases per 100,000, but it is fatal and cancer grows very fast inside the brain tissues, namely astrocytes and oligodendrocytes. Because of the rapid growth, it is difficult to halt the dissemination of tumor in adjacent tissues. Although temozolomide (TMZ) is a currently approved standard of care, it develops resistance over the period. Therefore, there is a need to develop a novel drug delivery system. In this work, authors have developed platelets as drug delivery carriers-loaded with quercetin (QCT) for targeting GM. The effect of QCT and QCT-platelet was assessed on the U373-MG cell line. Natural human platelets were used as carriers for drug loading and drug delivery. Platelets possess an open canalicular system that allows the uptake of drug molecules in the platelet cytoplasm. The study showed that the maximum encapsulation efficiency of QCT-platelet was 93.96 ± 0.12% and the maximum drug release in 24 h was 76.26 ± 0.13% in-vitro at pH 5.5 that mimics the tumor microenvironment. In this work, there is a three-fold enhancement of solubility of QCT. The cytotoxic activity of QCT-platelets was studied in the U373-MG human astrocytoma glioblastoma cell line and the cell viability was 14.52 ± 1.53% after 48 h. Thus, platelets were proved as good carriers for therapeutic moieties and can be effectively used to target the glioblastoma tumor in the near future.

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http://dx.doi.org/10.1002/biot.202100271DOI Listing
December 2021

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