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<p>This study reports the green biosynthesis of bioactive selenium nanoparticles using <i>Catharanthus roseus</i> extract as a reducing and stabilizing agent. Liquid chromatography–electrospray ionization tandem mass spectrometry profiling identified key phytoconstituents, including riboflavin 5′-phosphate and chlorogenic acid, involved in the process. Characterization confirmed successful synthesis: ultraviolet–visible spectroscopy showed an absorption peak at 266&#xa0;nm, high-resolution transmission electron microscopy revealed spherical particles ranging from 8.6 to 65.6&#xa0;nm, zeta potential was − 3.55 mV, and X-ray diffraction confirmed crystallinity. Fourier-transform infrared spectroscopy indicated the involvement of phenolic and carboxyl groups. The biosynthesized selenium nanoparticles exhibited broad-spectrum antimicrobial activity, antiviral action against adenovirus (half-maximal inhibitory concentration (IC<sub>50</sub>) = 22.99&#xa0;µg/mL), and potent cytotoxicity against HepG2 hepatocellular carcinoma cells (IC<sub>50</sub>= 1.5&#xa0;µg/mL). Molecular docking and dynamics simulations suggested stable interactions between seleniumphytochemical complexes and biological targets. Overall, this work demonstrates that <i>C. roseus</i> provides a sustainable route to novel, multifunctional selenium nanoparticles with promising preliminary bioactivity, establishing a foundation for future therapeutic development and in vivo studies.</p>

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Phytochemical-mediated green synthesis of selenium nanoparticles using Catharanthus roseus and their physicochemical characterization, biological evaluation, and molecular docking analysis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月28日

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  • Abeer F. Desouky,
  • Asmaa M. Fahim,
  • Ayda K. Kelany,
  • Marwa A. Kamel,
  • Aly F. Mohamed,
  • Mostafa M. Abo Elsoud,
  • Sayeda A. Abdelhamid

摘要

This study reports the green biosynthesis of bioactive selenium nanoparticles using Catharanthus roseus extract as a reducing and stabilizing agent. Liquid chromatography–electrospray ionization tandem mass spectrometry profiling identified key phytoconstituents, including riboflavin 5′-phosphate and chlorogenic acid, involved in the process. Characterization confirmed successful synthesis: ultraviolet–visible spectroscopy showed an absorption peak at 266 nm, high-resolution transmission electron microscopy revealed spherical particles ranging from 8.6 to 65.6 nm, zeta potential was − 3.55 mV, and X-ray diffraction confirmed crystallinity. Fourier-transform infrared spectroscopy indicated the involvement of phenolic and carboxyl groups. The biosynthesized selenium nanoparticles exhibited broad-spectrum antimicrobial activity, antiviral action against adenovirus (half-maximal inhibitory concentration (IC50) = 22.99 µg/mL), and potent cytotoxicity against HepG2 hepatocellular carcinoma cells (IC50= 1.5 µg/mL). Molecular docking and dynamics simulations suggested stable interactions between seleniumphytochemical complexes and biological targets. Overall, this work demonstrates that C. roseus provides a sustainable route to novel, multifunctional selenium nanoparticles with promising preliminary bioactivity, establishing a foundation for future therapeutic development and in vivo studies.