在体外和体内脱的矩阵独立选in vitro和in vivo
Anitha T Simon1,2, Anthony G Dodge2,3, Julie Bondy2,4
1Department of Mechanical Engineering, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA.
mBio
|August 18, 2025
概括
研究人员开发了一种新的pH指标方法,用于检测在和多化基物质 (PFAS) 的生物降解过程中释放的质子. 这种高通量选方法有助于识别用于这些持久性环境污染物的生物修复的新酶和微生物.
科学领域:
- 环境微生物学和生物化学
- 生物修复持久有机污染物的生物修复.
- 碳-键裂变的酶催化.
背景情况:
- 和多化基物质 (PFAS) 是普遍存在的,令人担忧的持续性环境污染物.
- 目前用于监测PFAS生物降解的方法,如LC-MS和电极,在吞吐量和样本量方面存在局限性.
- 酶去释放出化离子和质子,提供了替代的检测目标.
研究的目的:
- 开发和验证一种质子监测方法,用于检测酶性碳-键裂解.
- 选新的微生物脱酶及其基质,包括PFAS.
- 建立一个高通量选格式,用于识别生物降解途径.
主要方法:
- 使用pH值指标 (甲醇蓝色,m-cresol紫色) 来监测脱过程中的质子产生.
- 采用来自Delftia acidovorans*的纯化水解脱酶和来自Pseudomonas putida*的重组酶.
- 在液态微升格式,甲板和水凝中测试的酶活性.
主要成果:
- 成功证明质子监测是跟踪脱的有效方法.
- 鉴定了六种纯化脱酶的新基质,包括一种PFAS化合物.
- 开发了一种适用于各种矩阵和酶/微生物系统的高通量选试验.
结论:
- 质子监测为选C-F键裂解酶和微生物提供了快速,高通量替代方案.
- 开发的方法有助于发现用于PFAS生物修复的新生物催化剂.
- 这种方法对于推进环境相关化化合物的生物降解研究至关重要.
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