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细菌生物膜通过从Streptococcus pyogenes ADUYE1克隆的重组SpdAZ降解

Zeynep Erdem Aynur¹, Gamze Basbulbul², Abdulkerim Karaynir¹

¹Aydın Adnan Menderes University, Recombinant DNA and Recombinant Protein Research Center (REDPROM), 09100, Aydin, Türkiye.

Microbial pathogenesis

|May 25, 2025

概括

一种新型核酶,来自Streptococcus pyogenes的spdAZ,表现出强大的DNA降解和针对各种细菌的显著抗生物膜活性. 这种酶有效地减少成熟的生物膜,并抑制新的生物膜的形成,表明其作为抗生物膜剂的潜力.

科学领域:

酶学是一种酶学.
微生物学微生物学
生物化学生物化学

背景情况:

核酶是参与核酸代谢和各种生物过程的关键酶.
细菌生物膜在医疗保健中带来了重大挑战,减少了抗生素的疗效,促进了持久性感染.
菌 pyogenes 含有各种酶,具有潜在的治疗应用.

研究的目的:

从Streptococcus pyogenes ADUYE1.1中克隆,表达和净化一个新型核酶spdAZ.
为了描述复合spdAZ (rSpdAZ) 酶的DNAse活性.
评估rSpdAZ对临床相关细菌分离物的抗生物膜疗效.

主要方法:

在大肠杆菌中,spdAZ的基因克隆和异质表达.
使用固定金属亲和色谱 (IMAC) 净化复合spdAZ (rSpdAZ).
在体外评估DNAse在各种DNA基质上的活性,以及对多种细菌物种的抗生物膜测定.

主要成果:

重组型spdAZ (rSpdAZ) 在病毒,细菌和真核生物DNA上表现出核酶活性.
rSpdAZ表现出显著的抗生物膜作用,使成熟的生物膜减少了65-93%,并将生物膜前形成抑制了48-91%.
在所有测试的细菌物种中,在4小时内观察到对成熟生物膜的酶活性.

结论:

描述的spdAZ酶具有强大的DNAase和抗生物膜特性.
rSpdAZ有效地破坏现有的细菌生物膜,并防止它们的形成.
spdAZ 是一个有前途的候选人,作为一种新型抗菌膜治疗剂.

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