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Effect of biodegradability on CXCR4 antagonism, transfection efficacy and antimetastatic activity of polymeric

Jing Li1, David Oupický1

  • 1Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202, USA.

Biomaterials
|April 15, 2014
PubMed

Insights

Biodegradable polymeric Plerixafor (PAMD) shows enhanced transfection and reduced toxicity. Only the biodegradable form of PAMD demonstrated effective antimetastatic activity in vivo, highlighting its therapeutic potential.

Area of Science:

  • Cancer research
  • Nanomedicine
  • Pharmacology

Background:

  • Chemokine receptor CXCR4 and its ligand SDF-1 are crucial in cancer metastasis.
  • Plerixafor (AMD3100) is a CXCR4 antagonist with potential antimetastatic applications.
  • Polymeric Plerixafor (PAMD) has been developed as a novel therapeutic agent.

Purpose of the Study:

  • To investigate the impact of biodegradability on PAMD's CXCR4 antagonism.
  • To evaluate PAMD's antimetastatic activity and transfection efficacy.
  • To compare biodegradable and non-degradable PAMD formulations.

Main Methods:

  • In vitro assessment of CXCR4 antagonism and cancer cell invasion inhibition.
  • Evaluation of transfection efficiency and cytotoxicity of PAMD polyplexes.
  • In vivo experimental lung metastasis model to assess antimetastatic activity.

Main Results:

  • Both biodegradable and non-degradable PAMD demonstrated CXCR4 antagonism and inhibited cancer cell invasion in vitro.
  • Biodegradable PAMD exhibited significantly enhanced transfection efficiency and reduced cytotoxicity compared to non-degradable PAMD.
  • Only biodegradable PAMD showed significant antimetastatic activity in the in vivo lung metastasis model.

Conclusions:

  • Biodegradability is a critical factor influencing the in vivo antimetastatic efficacy of polymeric Plerixafor (PAMD).
  • Biodegradable PAMD offers improved transfection and safety profiles, alongside potent antimetastatic effects.
  • Biodegradable PAMD represents a promising therapeutic strategy for preventing cancer metastasis.
Keywords:
Bioreducible polycationCXCR4Gene deliveryMetastasisPolyplexes

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