A sensitive and high-throughput assay to detect low-abundance proteins in serum

Abstract

The ability to detect antigens immunologically is limited by the affinity of the antibodies and the amount of antigens. We have now succeeded in creating a modular, facile amplification system, termed fluorescent amplification catalyzed by T7 polymerase technique (FACTT). Such a system can detect protein targets specifically at subfemtomolar levels (∼0.08 fM). We describe here the detection of Her2 (also known as Neu) from rodent and human sera. FACTT is adaptable to high-throughput screening and automation and provides a practical method to enhance current ELISAs in medical practice.

Cite this article

Zhang, H., Cheng, X., Richter, M. et al. A sensitive and high-throughput assay to detect low-abundance proteins in serum. Nat Med 12, 473–477 (2006). https://doi.org/10.1038/nm1378

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