Thermally programmed one-pot CRISPR assay for on-site pandemic surveillance.

Abstract

The ongoing monkeypox virus outbreak highlights the need for rapid and accurate diagnostics to enhance epidemic control. CRISPR-based assays hold promise, but clinical translation is hindered by high complexity and low throughput. Here, we describe a thermally regulated asynchronous CRISPR-enhanced (TRACE) assay that rapidly and sensitively detects multiple DNA targets in a streamlined, one-pot format. TRACE exhibits a 2.5 copies/test limit of detection - 40 times lower than a canonical one-pot CRISPR. When applied to clinical samples, it achieves 99.5% accuracy across diverse sample types, and can detect MPXV within 11 minutes. Point-of-care TRACE assays meet ASSURED criteria and deliver comparable performance to qPCR, with a fivefold reduced report time, in outpatient settings. Moreover, TRACE enables simultaneous detection of pathogen and host genes at comparable sensitivity to address a critical limitation of current CRISPR assays, which lack internal controls. TRACE thus enables rapid, on-site surveillance to facilitate bench-to-bedside translation of CRISPR diagnostics.