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采用分子对接方法和药代动力学毒性评估评估作为膳食益生菌的安全性和赭曲霉毒素 A 降解能力。

Evaluation of the Safety and Ochratoxin A Degradation Capacity of as a Dietary Probiotic with Molecular Docking Approach and Pharmacokinetic Toxicity Assessment.

机构信息

Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul 05006, Korea.

Department of Zoology, School of Biosciences, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641043, India.

出版信息

Int J Mol Sci. 2022 Aug 13;23(16):9062. doi: 10.3390/ijms23169062.

Abstract

The present study evaluated the properties and ochratoxin A (OTA) degradation capacity of the dietary probiotic BalaMMB-P3, isolated from a milk coagulant. The acidic tolerance of the isolate at pH 2-3 was checked with bile salts. No hemolytic activity was noted, which confirmed the nonpathogenicity of the strain. The isolate was tested in vitro for antibiotic susceptibility, enzymatic activity, bile salts hydrolase activity and antifungal activity against , and . A molecular docking-based OTA toxicity assessment was carried out for multitargeted proteins. The 16S rRNA gene-based phylogenetic assessment identified the strain as and was authenticated in GenBank. The carboxylesterase and glutathione s-transferase enzymes showed active and strong interactions with esters and amide bonds, respectively. The compound exhibited carcinogenic and cytotoxicity effects at an LD value of 20 mg/kg. Furthermore, the strain showed a potent ability to reduce OTA and suggested the prospects for utilization in nutritional aspects of food.

摘要

本研究评估了从凝乳酶中分离出的膳食益生菌 BalaMMB-P3 的特性和赭曲霉毒素 A(OTA)降解能力。采用胆盐检测了分离物在 pH 2-3 时的耐酸性。未发现溶血活性,这证实了该菌株的非致病性。在体外对分离物进行了抗生素敏感性、酶活性、胆盐水解酶活性和抗真菌活性测试,以评估其对 、 和 的抑制作用。基于分子对接的 OTA 毒性评估针对多靶点蛋白进行了研究。基于 16S rRNA 基因的系统发育评估将该菌株鉴定为 ,并在 GenBank 中得到了验证。羧酸酯酶和谷胱甘肽 S-转移酶分别对酯和酰胺键表现出活性和强相互作用。该化合物在 LD 值为 20mg/kg 时表现出致癌和细胞毒性作用。此外,该菌株表现出较强的 OTA 降解能力,这表明其在食品营养方面具有应用前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2621/9409003/a73b3b60b9a0/ijms-23-09062-g001.jpg

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