Multiplexed protease assays using element-tagged substrates.
Multiplexed protease assays using element-tagged substrates.
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DOI:
10.1016/j.ab.2010.09.008
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发表时间:
2011-01-01
影响因子:
2.9
通讯作者:
Nitz M
中科院分区:
文献类型:
--
作者:
Lathia US;Ornatsky O;Baranov V;Nitz M
Inductively coupled plasma-mass spectrometry (ICP-MS) based assays lend themselves to multiplexing due to the high resolution between mass channels, the sensitivity, and the reliability of the technique. Here the potential of ICP-MS based protease assays is demonstrated with a quadruplex assay of cysteine proteases and metalloproteases. Four orthogonal peptide substrates were synthesized for the proteases calpain-1, caspase-3, MMP-9, and ADAM10. Each substrate carries a biotin tag at the C-terminus and a DTPA-based lanthanide complex at the N-terminus. The results demonstrate that this is simple and reproducible analysis technique with excellent correlation between the single and the multiplex assay formats.
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通讯作者:
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