Issue 21, 2022

Microneedle patch with “spongy coating” to co-load multiple drugs to treat multidrug-resistant melanoma

Abstract

Melanoma is the most aggressive skin malignancy that continues to increase in worldwide. The transferability and multidrug resistance lead to a high fatality rate. Synergistic administration of hydrophilic carboplatin (CBP) and hydrophobic vorinostat (SAHA) can be a reliable way to treat multidrug-resistant melanoma. However, the different physicochemical properties of multiple drugs make it difficult to achieve a convenient co-loading and an ideal synergistic treatment efficacy. To solve the problem, a microneedle patch with a porous “spongy coating” (PF-MNP) was fabricated. Firstly, (polyacrylic acid/polyethyleneimine)10 multilayers were fabricated on polymethyl methacrylate MNP. Then a “spongy coating” was achieved by acid treatment and freeze-drying. Due to the capillary effect, hydrophobic SAHA and hydrophilic CBP could be conveniently adsorbed step-by-step. The two drugs could distribute evenly on the surface, and the morphology of MNP remained good. The loading content of SAHA and CBP was easily regulated by adjusting the concentration of the adsorption solution, and MNP could quickly release most drugs within 30 min. The final in vivo experiments proved that CBP/SAHA co-loaded PF-MNP had the best therapeutic efficiency for multidrug-resistant melanoma. The MNP with a “spongy coating” showed potential to be a safe and efficient transdermal delivery platform for multiple drugs.

Graphical abstract: Microneedle patch with “spongy coating” to co-load multiple drugs to treat multidrug-resistant melanoma

Article information

Article type
Paper
Submitted
10 avq 2022
Accepted
08 sen 2022
First published
11 sen 2022

Biomater. Sci., 2022,10, 6282-6290

Microneedle patch with “spongy coating” to co-load multiple drugs to treat multidrug-resistant melanoma

X. Li, W. Yu, J. Yang, Y. Chen, X. Qian, J. Wang, Y. Wang and J. Ji, Biomater. Sci., 2022, 10, 6282 DOI: 10.1039/D2BM01275H

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