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Related Concept Videos

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Methotrexate-Loaded Chitosan Oligosaccharide-ES2 for Targeted Cancer Therapy.

Wen Tang1,2,3, Huiwen Hou1,2,3, Hanlin Wang1,2,3

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Summary
This summary is machine-generated.

A novel nanoparticle drug delivery system, CREM, combines anti-cancer drugs for targeted tumor therapy. This system shows significant antitumor effects with reduced toxicity, offering a promising new cancer treatment approach.

Keywords:
ES2antiangiogenesisantitumorintegrinquaternized chitosan oligosaccharide

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Oncology

Background:

  • Cancer necessitates advanced treatments with improved precision and reduced harm.
  • Targeted drug delivery systems are crucial for enhancing therapeutic efficacy and minimizing side effects.
  • Integrin αvβ3 is a key target on tumor cells for specific drug delivery.

Purpose of the Study:

  • To develop a novel nanoparticle drug delivery system (CREM) for targeted cancer therapy.
  • To co-load an anti-angiogenic agent (ES2) and a chemotherapeutic drug (MTX) into the nanoparticles.
  • To evaluate the in vitro and in vivo efficacy and safety of the CREM system.

Main Methods:

  • Utilized quaternized chitosan oligosaccharide (HTCOSC) and EDC/NHS chemistry to create CREM nanoparticles.
  • Incorporated cyclic RGD (cRGD) for targeting integrin αvβ3, ES2, and MTX into the nanoparticles.
  • Assessed in vitro cytotoxicity, anti-angiogenic activity, and blood compatibility.
  • Conducted in vivo studies to evaluate tumor suppression, apoptosis induction, and organ toxicity.

Main Results:

  • CREM nanoparticles (179.47 nm) demonstrated significant in vitro suppression of endothelial and melanoma cell proliferation (71.18% and 82.25% inhibition).
  • CREM showed excellent in vitro anti-angiogenic and antitumor activity with low hemolysis (<2%) and favorable blood compatibility.
  • In vivo studies revealed CREM induced tumor cell apoptosis, inhibited angiogenesis (reduced VEGF), and achieved an 80.19% tumor suppression rate.
  • Histopathological analysis confirmed minimal toxic side effects of CREM on organs compared to MTX.

Conclusions:

  • The CREM nano drug delivery system effectively targets integrin αvβ3 on tumor cells.
  • CREM synergistically enhances the therapeutic efficacy of combined anti-angiogenic and chemotherapeutic agents.
  • This targeted nano delivery system presents a promising novel approach for cancer treatment with improved safety and efficacy.