Noninvasive imaging and quantification of bile salt hydrolase activity: From bacteria to humans.

Noninvasive imaging and quantification of bile salt hydrolase activity: From bacteria to humans.
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胆汁盐水解酶活性的无创成像和定量:从细菌到人。

DOI:
10.1126/sciadv.aaz9857
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发表时间:
2021-03
期刊:
影响因子:
13.6
通讯作者:
Goun EA
Goun EA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Khodakivskyi PV;Lauber CL;Yevtodiyenko A;Bazhin AA;Bruce S;Ringel-Kulka T;Ringel Y;Bétrisey B;Torres J;Hu J;Chou CJ;Goun EA

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新型光学探针可以定量测定细菌、临床粪便样本、小鼠和人类的胆盐水解酶活性。微生物组产生的酶胆汁盐水解酶(BSH)在人类健康中起着核心作用,但由于缺乏合适的方法来测量其活性,其功能尚不清楚。在这里,我们开发了一种基于超灵敏生物发光成像的新型光学工具,并证明该方法可用于在广泛的生物环境中快速和经济高效地定量BSH活性,包括纯酶和细菌,完整的粪便浆液和活体动物的无创成像,以及用于评估小鼠和人类整个胃肠道中的BSH活性。通过该试验,我们发现某些类型的益生元能够增加体内肠道微生物群的BSH活性,并成功地证明了该试验作为预测炎症性肠病(IBD)患者临床状态的无创诊断试验的潜在应用。
Novel optical probes allow quantification of bile salt hydrolase activity in bacteria, clinical fecal samples, mice, and humans. The microbiome-produced enzyme bile salt hydrolase (BSH) plays a central role in human health, but its function remains unclear due to the lack of suitable methods for measuring its activity. Here, we have developed a novel optical tool based on ultrasensitive bioluminescent imaging and demonstrated that this assay can be used for quick and cost-effective quantification of BSH activity across a broad range of biological settings including pure enzymes and bacteria, intact fecal slurries, and noninvasive imaging in live animals, as well as for the assessment of BSH activity in the entire gastrointestinal tract of mice and humans. Using this assay, we showed that certain types of prebiotics are capable of increasing BSH activity of the gut microbiota in vivo and successfully demonstrated potential application of this assay as a noninvasive diagnostic test to predict the clinical status of inflammatory bowel disease (IBD) patients.
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