Bioactivity Determination of Recombinant lysostaphin Immobilized on Glass Surfaces Modified by Cold Atmospheric Plasma on Staphylococcus aureus

سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 34

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شناسه ملی سند علمی:

JR_JMMI-7-4_007

تاریخ نمایه سازی: 29 بهمن 1402

چکیده مقاله:

Introduction: Staphylococcus aureus is a source of nosocomial infections and one of the significant concerns in patients with indwelling devices. Lysostaphin is a bacterially produced endopeptidase with a unique activity on S. aureus. Plasma, the fourth state of the material, consists of charged ions, free electrons, and activated neutral species. Biomedical applications of cold plasma are rapidly growing due to its capacity to treat heat-sensitive objects such as polymeric materials and biological samples. It activates surfaces by etching them to stabilize proteins. The direct effect of cold atmospheric plasma on the eradication of microorganisms have been investigated. However, there is no report on immobilizing antibiotic agents. Methods: In this study, the lysostaphin protein was expressed and purified using Ni-NTA column, then the purified enzyme was immobilized on glass surfaces pretreated with cold atmospheric plasma for ۱۵۰ s, ۲۰۰ s, and ۳۰۰ s. The antimicrobial activity of immobilized lysostaphin on S. aureus was approved by in vitro analysis. Results: The ۳۰۰ s plasma treatment confirmed to be the best time arrangement for more lysostaphin immobilization, shown by Atomic Force Microscopy. Conclusion: Our results showed that passive adsorption to the treated surface does not affect the structure and subsequent antimicrobial function of the recombinant protein compared to the standard proteins.

نویسندگان

Gelareh Ehsani

Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran

Foad Fahmide

Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran

Dariush Norouzian

Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran

Seyed Mohammad Atyabi

Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran

Parastoo Ehsani

Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran

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