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Shining light on nuclear-targeted therapy using gold nanostar constructs.

Duncan Hieu M Dam1, Kayla S B Culver, Patrick N Sisco

  • 1Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL 60208, USA.

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Researchers developed gold nanostars with aptamers for nuclear-targeted cancer therapy. This approach deformed the nuclear envelope, increasing cancer cell death and showing promise for improved treatment efficacy.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Cancer Research

Background:

  • Nuclear-targeted therapy offers potential for enhanced cancer treatment efficacy.
  • Challenges remain in targeting, drug delivery, and release within the cancer cell nucleus.
  • Nanoparticles show promise as carriers, but nuclear interaction mechanisms require further study.

Purpose of the Study:

  • To investigate a novel nanoconstruct for nuclear-targeted cancer therapy.
  • To evaluate the effects of the nanoconstruct on cancer cell nuclear phenotype.
  • To explore the correlation between nuclear changes and therapeutic outcomes.

Main Methods:

  • Utilized gold (Au) nanostars loaded with nucleolin-specific aptamers.
  • Investigated nanoconstruct interaction with the nuclear envelope (NE).
  • Employed femtosecond, light-triggered release of aptamers to induce NE deformations.

Main Results:

  • The nanoconstruct induced significant changes in nuclear phenotype, including NE invaginations.
  • Light-triggered aptamer release amplified NE deformations.
  • Increased NE folding correlated with enhanced cancer cell apoptosis and reduced viability.

Conclusions:

  • Nanoconstructs can effectively alter cancer cell nuclear morphology.
  • Nuclear phenotype changes are linked to increased therapeutic efficacy in cancer treatment.
  • This study provides new insights into nuclear-targeted cancer therapy strategies.