Hui Yao1, Liqun Wang3, Jia Guo1, Weimin Liu4, Jingjing Li1, Yingxiao Wang2, Linhong Deng1,*, Mingxing Ouyang1,2,3,*
Molecular & Cellular Biomechanics, Vol.17, No.3, pp. 101-111, 2020, DOI:10.32604/mcb.2020.09595
Abstract Prostate cancer is the most common cancer among men beyond 50 years
old, and ranked the second in mortality. The level of Prostate-specific antigen
(PSA) in serum has been a routine biomarker for clinical assessment of the cancer
development, which is detected mostly by antibody-based immunoassays. The
proteolytic activity of PSA also has important functions. Here a genetically
encoded biosensor based on fluorescence resonance energy transfer (FRET) technology was developed to measure PSA activity. In vitro assay showed that the
biosensor containing a substrate peptide ‘RLSSYYSGAG’ had 400% FRET
change in response to 1 µg/ml PSA within 90 min, and… More >
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