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beta-Alanyl aminopeptidase-activated fluorogenic probes for the rapid identification of Pseudomonas aeruginosa in clinical samples

机译:β-丙氨酸氨基肽酶激活的荧光探针,用于在临床样品中快速鉴定铜绿假单胞菌

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摘要

The fluorogenic self-immolative substrates 8 are specifically hydrolyzed by beta-alanyl aminopeptidase, resulting in a 1,6-elimination and the release of the highly fluorescent hydroxycoumarins 6. 7-{4-(beta-Alanylamino)}benzyloxy-3-ethoxycarbonylcoumarin trifluoroacetate 8b has advantages over another fluorogenic substrate, 7-N-beta-alanylamino-4-methylcoumarin 9, as it is retained by bacterial colonies in solid agar applications, and results in similar times to detection, stronger fluorescence intensities, and no decrease in signal over time in liquid media. Although 7-{4-(beta-alanylamino)}benzyloxy-4-methylcoumarin trifluoroacetate 8a produces a weaker signal than substrate 8b, its use allowed better discrimination between the BAP producers P. aeruginosa (positive) and S. marcescens (negative).
机译:荧光自我侵略性衬底8特异性地通过β-丙氨酸氨基肽酶水解,得到1,6-消除和释放高度荧光羟基苏马辛6. 7- {4-(β-丙氨酸氨基)}苄氧基-3-乙氧基羰基苏林林 三氟乙酸酯8B具有优于另一种荧光底物,7-N-β-醛氨基-4-甲基伞素9,因为它通过固体琼脂应用中的细菌菌落保留,并导致类似的时间检测,更强的荧光强度,并且没有减少 液体介质中的信号随时间。 虽然7- {4-(β-丙氨酸氨基)}苄氧基-4-甲基Quarin三氟乙酸酯8a产生的信号较弱,但其使用允许在BAP生产商P.铜绿假单胞菌(阳性)和S. marcescens(负)之间更好地辨别。

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  • 来源
    《RSC Advances》 |2016年第64期|共6页
  • 作者单位

    Univ Sydney Fac Pharm Camperdown Campus Sydney NSW 2006 Australia;

    Univ Sydney Fac Pharm Camperdown Campus Sydney NSW 2006 Australia;

    bioMerieux R&

    D Microbiol 3 Route Port Michaud F-38390 La Balme Les Grottes France;

    bioMerieux R&

    D Microbiol 3 Route Port Michaud F-38390 La Balme Les Grottes France;

    Freeman Rd Hosp Dept Microbiol Newcastle Upon Tyne NE7 7DN Tyne &

    Wear England;

    Univ Sydney Fac Pharm Camperdown Campus Sydney NSW 2006 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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