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Updated: May 23, 2026

Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?
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Poly-lactic-glycolic-acid surface nanotopographies selectively decrease breast adenocarcinoma cell functions.

Lijuan Zhang1, Thomas J Webster

  • 1Department of Chemistry, Brown University, Providence, RI 02912, USA. lijuan zhang@brown.edu

Nanotechnology
|March 23, 2012
PubMed
Summary
This summary is machine-generated.

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Poly(lactic-co-glycolic acid) (PLGA) nanotopographies, specifically 23 nm featured surfaces, significantly inhibit breast cancer cell functions. Healthy cells, however, show increased proliferation on these surfaces, suggesting potential for regenerative medicine applications.

Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cancer Biology

Background:

  • Poly(lactic-co-glycolic acid) (PLGA) nanotopographies have shown promise in reducing lung cancer cell functions.
  • Previous studies indicated that 23 nm surface-featured PLGA decreased vascular endothelial growth factor (VEGF) secretion in lung epithelial carcinoma cells compared to nanosmooth PLGA.

Purpose of the Study:

  • To investigate the universality of nanopatterned PLGA substrates in inhibiting various cancer cell functions.
  • To determine the effects of different PLGA nanometer surface topographies on breast epithelial adenocarcinoma cell (MCF-7) adhesion, proliferation, apoptosis, and VEGF secretion.

Main Methods:

  • Fabrication of PLGA surfaces with varied nanotopographies but similar chemistry and hydrophobicity to isolate topographical effects.

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  • Utilized Atomic Force Microscopy (AFM) to verify the nanotopographies.
  • Quantified MCF-7 cell adhesion, proliferation, apoptosis, and VEGF secretion on different PLGA surfaces.

    • Main Results:

    • Significantly decreased breast adenocarcinoma cell proliferation, increased apoptosis, and reduced VEGF synthesis were observed on 23 nm featured PLGA surfaces compared to nanosmooth, 300 nm, and 400 nm surfaces.
    • In contrast, healthy breast epithelial cells exhibited a 24% increase in proliferation on the 23 nm featured PLGA surfaces compared to other PLGA samples.
    • These findings highlight the specific impact of PLGA nanotopography on cancer cell behavior.

    Conclusions:

    • PLGA surface nanotopographies play a crucial role in modulating cancer cell functions.
    • 23 nm featured PLGA surfaces demonstrate significant potential for inhibiting breast cancer cell functions.
    • These findings open avenues for utilizing polymer nanotopographies in anticancer regenerative medicine without chemotherapeutics.