Provided herein is a large immuno-sorbent surface area assay (ALISSA) for the rapid and sensitive detection of botulinum neurotoxins (BoNTs) and anthrax toxin. This assay is designed to capture a low number of toxin molecules and to measure their intrinsic protease activity via conversion of a fluorogenic or luminescent substrate. Also provided herein are novel peptides that can be specifically cleaved by BoNT and novel peptides that are resistant to cleavage by BoNT. The combination of these cleavable and control peptides can be used for implementation of an exemplary ALISSA used to specifically detect BoNT enzymatic activity. Furthermore, the ALISSA as described herein may also be used in a column based format for use in a high-throughput system for testing large quantities of samples.
本文提供了一种大型免疫吸附表面积测定法(ALIS
SA),用于快速灵敏地检测肉毒杆菌神经毒素(BoNTs)和
炭疽毒素。这种检测方法设计用于捕获少量毒素分子,并通过荧光或发光底物的转化来测量其内在
蛋白酶活性。本文还提供了可被 BoNT 特异性裂解的新型
多肽和抗 BoNT 裂解的新型
多肽。这些可裂解肽和对照肽的组合可用于实施一种用于特异性检测 BoNT 酶活性的 ALIS
SA 示例。此外,本文所述的 ALIS
SA 还可采用柱式格式,用于检测大量样品的高通量系统。