An Isothermal Diagnostic Test that Utilizes a Cas Protein and a Polymerase
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Aug 29, 2024
app pub date -
Jun 9, 2022
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Jun 10, 2021
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Kits and methods are provided that utilize a mesophilic strand displacing polymerase selected from Bsu DNA polymerase (large fragment) and Klenow in Loop mediated amplification (LAMP) at temperatures in the range of 34° C.-52ºC. This contrasts with 60° C.-65° C. required for standard Bst polymerase dependent LAMP. The reduced temperature of the LAMP reaction enables the use of other proteins that are temperature sensitive in a one-step reaction. For example, a Cas protein such as Cas12a may be used with a target nucleic acid specific guide RNA and optionally a reporter oligonucleotide containing a quencher and a fluorophore or lateral flow reagents to determine the presence of pathogens in a sample.
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