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<p>To improve the bioavailability and biological activity of recombinant type III humanized collagen (rhCol III), we optimized the preparation process of recombinant type III humanized collagen-loaded liposomes (rhCol III-LIPS) using the film dispersion and periplasmic extrusion methods, with the encapsulation rate as the response value. Then we analyzed the antioxidative activity of rhCol III-LIPS by determining the scavenging rate of free radicals. We investigated the protective effect of rhCol III-LIPS against H<sub>2</sub>O<sub>2</sub>-induced injuries in HaCaT cells by detecting cell vitality, contents of reactive oxygen species (ROS), malondialdehyde (MDA), and activities of antioxidases superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase dismutase (GSH-Px). The results showed, in condition of rhCol III-to-lipid ratio of 1:50, membrane-to-material ratio of 4:1, and ultrasound duration of 20&#xa0;min, the encapsulation rate of the liposome reached 91.89%±0.59%. The free-radical scavenging rates for 1,1-diphenyl-2-picrohydrazine (DPPH), 2,2-l diazo-bisdiamine salt (ABTS), hydroxyl (OH<sup>−</sup>), and superoxide (O<sup>2−</sup>) anions are 87.11% ± 2.54%, 93.72% ± 2.87%, 86.45% ± 1.62%, 76.67% ± 1.56% respectively. The protective effect on oxidation-damaged cells of rhCol III-LIPS was higher than rhCol III or blank liposomes (B-LIPS). In summary, rhCol III-LIPS has good physical stability and in-vitro antioxidative activity, effectively alleviating H<sub>2</sub>O<sub>2</sub>-induced oxidative injuries in HaCaT cells. Our study provides a more stable and efficient strategy for the application of rhCol.</p>

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Preparation, characterization and antioxidative activity analysis of recombinant humanized collagen type III-loaded liposomes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月24日

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  • Mengxing Du,
  • Chuanxiu Chen,
  • Yuxin Zhou,
  • Yixuan Song,
  • Shan Wang,
  • Shanshan Tang,
  • Jia Yang,
  • Xia Yang,
  • Enli Liu,
  • Yufeng Yu

摘要

To improve the bioavailability and biological activity of recombinant type III humanized collagen (rhCol III), we optimized the preparation process of recombinant type III humanized collagen-loaded liposomes (rhCol III-LIPS) using the film dispersion and periplasmic extrusion methods, with the encapsulation rate as the response value. Then we analyzed the antioxidative activity of rhCol III-LIPS by determining the scavenging rate of free radicals. We investigated the protective effect of rhCol III-LIPS against H2O2-induced injuries in HaCaT cells by detecting cell vitality, contents of reactive oxygen species (ROS), malondialdehyde (MDA), and activities of antioxidases superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase dismutase (GSH-Px). The results showed, in condition of rhCol III-to-lipid ratio of 1:50, membrane-to-material ratio of 4:1, and ultrasound duration of 20 min, the encapsulation rate of the liposome reached 91.89%±0.59%. The free-radical scavenging rates for 1,1-diphenyl-2-picrohydrazine (DPPH), 2,2-l diazo-bisdiamine salt (ABTS), hydroxyl (OH−), and superoxide (O2−) anions are 87.11% ± 2.54%, 93.72% ± 2.87%, 86.45% ± 1.62%, 76.67% ± 1.56% respectively. The protective effect on oxidation-damaged cells of rhCol III-LIPS was higher than rhCol III or blank liposomes (B-LIPS). In summary, rhCol III-LIPS has good physical stability and in-vitro antioxidative activity, effectively alleviating H2O2-induced oxidative injuries in HaCaT cells. Our study provides a more stable and efficient strategy for the application of rhCol.