Biomaterials:PDN作为一种新型益生元可以调节益生菌细菌代谢,解决细菌耐药性

2019-07-28 sunshine 译 MedSci原创

最近,益生菌作为抗生素的替代品引起了很多关注,因为过度使用抗生素已引起广泛的细菌耐药性。鉴于益生元可增强益生菌的活性,我们通过邻苯二甲酸酐与葡聚糖结合形成益生元制备邻苯二甲酰葡聚糖纳米粒(PDN),并检查其对益生菌的细胞和抗微生物特性的影响。首先,我们发现益生菌对PDN的内在化取决于温度,时间和葡萄糖转运蛋白。PDN的内化通过自身防御机制增强了益生菌产生的抗菌肽,并且与益生菌本身相比,导致针对革兰

最近,益生菌作为抗生素的替代品引起了很多关注,因为过度使用抗生素已引起广泛的细菌耐药性。鉴于益生元可增强益生菌的活性,我们通过邻苯二甲酸酐与葡聚糖结合形成益生元制备邻苯二甲酰葡聚糖纳米粒(PDN),并检查其对益生菌的细胞和抗微生物特性的影响。

首先,我们发现益生菌对PDN的内在化取决于温度,时间和葡萄糖转运蛋白。PDN的内化通过自身防御机制增强了益生菌产生的抗菌肽,并且与益生菌本身相比,导致针对革兰氏阳性和阴性病原体的更高抗微生物活性。此外,由PDN内化的益生菌产生的pediocin能够抑制致病性肠道感染并改变体内肠道微生物组的数量。用PDNs内化的乳酸片球菌的增强的抗微生物特性可以减少病原体的数量并增加小鼠中的有益细菌种类。此外,改变了肠道微生物组的组成,并且防止了微生物群落的多样性的减少。

总之,该研究结果表明,PDN作为一种新型益生元可以调节益生菌细菌代谢,这表明益生菌调节的新途径及其在解决细菌耐药性挑战中的应用。

原始出处:

Kim WS, Han GG, et al., Novel production of natural bacteriocin via internalization of dextran nanoparticles into probiotics. Biomaterials. 2019 Jul 15;218:119360. doi: 10.1016/j.biomaterials.2019.119360.

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    2019-11-04 sunylz
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    2019-07-30 mnda
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