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KMID : 1007520220310070893
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Food Science and Biotechnology
2022 Volume.31 No. 7 p.893 ~ p.904
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Recombinant human β-defensin130 inhibited the growth of foodborne bacteria through membrane disruption and exerted anti-inflammatory activity
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Dong Bin
Lin Yanjun
Su Zhiwei
Sun Chunlong
Wang Jun
Fu Shijun
Du Wen
Wu Tao
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Abstract
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Foodborne pathogens causing food poisoning and infections are detrimental to human health, and the abuse of antibiotics induced severe antibiotic resistance in past decades. Thus, it is urgent to develop new antimicrobial agents. In the current study, human β-defensin 130 (hBD130), which is an antimicrobial peptide identified in human macrophages in 2017, was initially produced in Pichia pastoris. The purified hBD130 demonstrated broad bactericidal spectrum against foodborne pathogens through a membrane disruption, with concentrations ranging from 10 to 45 μg/mL. Moreover, hBD130 showed a low hemolytic effect and nearly no cytotoxicity to mammalian cells with a dosage of 400 μg/mL. In addition, the secretion amounts and mRNA levels of NO, IL-6, IL-1β, and TNF-α in LPS-induced mouse macrophage were significantly decreased with 1 mg/mL of hBD130. Taken together, these results showed that hBD130 is a promising antimicrobial agent to treat foodborne bacterial infections and inflammation.
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KEYWORD
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Human β-defensin 130, Antimicrobial peptide, Heterologous expression, Antimicrobial activity, Anti-inflammatory activity
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