Characterization and biodistribution of trans resveratrol- peg-folic acid-gold nanoparticle conjugates

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Purpose: To evaluate the characteristics and biodistribution of trans resveratrol-PEG-folic acid-gold nanoparticle conjugates (rsv-PEG-FA-AuNP). Methods: Gold nanoparticles were produced by citric reduction followed by conjugation of PEG-folic acid and resveratrol. Characterization of rsv-PEG-FA-AuNP conjugates including their particle size, zeta potential, and by Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) was carried out. Biodistribution study of rsv-PEG-FA-AuNP was carried out using female Sprague Dawley rats. Biodistribution data were obtained from high performance liquid chromatography (HPLC) analysis. Results: The mean particle size and zeta potential of rsv-PEG-FA-AuNP were 249.03 ± 10.31 and - 36.33 ± 3.12 mV, respectively. TEM images showed rsv-PEG-FA-AuNP conjugates formed spherical shape. Rsv-PEG-FA-AuNP conjugates found in plasma, kidney (1.90 ± 0.20 μg/g), spleen (2.65 ± 1.18 μg/g), liver (1.74 ± 0.03 μg/g), and lung (1.82 ± 0.12 μg/g), after 90 minutes intravenous administration (i.v.) in female Sprague Dawley rats. No free resveratrol was found in plasma, kidney, or spleen after i.v administration in female dawdle Sprague Dawley rats. Conclusion: Resveratrol-PEG-FA-AuNP conjugates appear to be a potential chemotherapy delivery system for active targeting purposes because of its longer systemic circulation and its accumulation in the kidney.

Original languageEnglish
Pages (from-to)223-230
Number of pages8
JournalTropical Journal of Pharmaceutical Research
Issue number2
Publication statusPublished - Feb 2021


  • Biodistribution
  • Folate receptor targeting
  • Folic acid
  • Gold nanoparticle conjugate
  • PEGylation


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