Zein Microneedles for Localized Delivery of Chemotherapeutic Agents to Treat Breast Cancer: Drug Loading, Release Behavior, and Skin Permeation Studies

  • Shubhmita Bhatnagar
  • Pooja Kumari
  • Srijanaki Paravastu Pattarabhiran
  • Venkata Vamsi Krishna Venuganti
Research Article

Abstract

Localized delivery of chemotherapeutic agents to treat breast cancer could limit their adverse drug reactions. The aim of this study was to investigate the influence of physico-chemical properties of chemotherapeutic agents in their loading, release behavior, and skin permeation using microneedles. Zein microneedles were fabricated using the micromolding technique containing 36 microneedles in a 1-cm2 area. These microneedles were loaded with two anti-breast cancer drugs, tamoxifen and gemcitabine, having different water solubilities. Entrapment or surface coating of chemotherapeutic agents in zein microneedles was optimized to achieve greater loading efficiency. The greatest loading achieved was 607 ± 21 and 1459 ± 74 μg for tamoxifen and gemcitabine using the entrapment approach, respectively. Skin permeation studies in excised porcine skin showed that the coating on microneedles approach results in greater skin deposition for tamoxifen; while the poke-and-patch approach would provide greater skin permeation for gemcitabine. Taken together, it can be concluded that different loading strategies and skin penetration approaches have to be studied for delivery of small molecules using polymeric microneedles.

KEY WORDS

tamoxifen gemcitabine zein microneedles drug release skin permeation 

Notes

Acknowledgements

This work was financially supported by BITS Pilani. The texture analyzer and multimode plate reader were procured using a grant from the Department of Science and Technology—Fund for Improvement of Science and Technology infrastructure (DST FIST).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no competing interests.

Supplementary material

12249_2018_1004_MOESM1_ESM.docx (186 kb)
Figure S1 (DOCX 185 kb)

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Copyright information

© American Association of Pharmaceutical Scientists 2018

Authors and Affiliations

  • Shubhmita Bhatnagar
    • 1
  • Pooja Kumari
    • 1
  • Srijanaki Paravastu Pattarabhiran
    • 1
  • Venkata Vamsi Krishna Venuganti
    • 1
  1. 1.Department of PharmacyBirla Institute of Technology and Science (BITS) PilaniHyderabadIndia

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