4.7 Article

Lignin-graft-PLGA drug-delivery system improves efficacy of MEK1/2 inhibitors in triple-negative breast cancer cell line

Journal

NANOMEDICINE
Volume 15, Issue 10, Pages 981-1000

Publisher

FUTURE MEDICINE LTD
DOI: 10.2217/nnm-2020-0010

Keywords

breast cancer; drug delivery; lignin; nanoparticle; targeted therapies; triple-negative

Funding

  1. National Science Foundation under NSF EPSCoR Track 2 RII [OIA 1632854]
  2. USDA National Institute of Food and Agriculture, AFRI project [2018-07406, 2017-07878]
  3. USDA-NIFA [1008750]
  4. National Science Foundation [CBET 1509713]
  5. NIFA [912951, 1008750] Funding Source: Federal RePORTER

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Aim: Few targeted therapies are available for triple-negative breast cancer (TNBC) patients. Here, we propose a novel alkaline-lignin-conjugated-poly(lactic-co-glycolic acid) (L-PLGA) nanoparticle drug delivery system to improve the efficacy of targeted therapies. Materials & methods: L-PLGA nanoparticles (NPs) loaded with the MEK1/2 inhibitor GDC-0623 were characterized, tested in vitro on MDA-MB-231 TNBC cell line and compared with loaded PLGA NPs. Results: Loaded L-PLGA NPs were less than half the size of PLGA NPs, had slower drug release and improved the efficacy of GDC-0623 when tested in vitro. We demonstrated that GDC-0623 reversed epithelial-to-mesenchymal transition in TNBC. Conclusion: Our findings indicate that L-PLGA NPs are superior to PLGA NPs in delivering GDC-0623 to cancer cells for improved efficacy in vitro. Graphical abstract

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