title: Sensitive and bidirectional detection of urine telomerase based on the four detection-color states of difunctional gold nanoparticle probe.
abstract: Telomerase, a valuable biomarker, is highly correlated with the development of most of human cancers. Here, we develop a bidirectional strategy for telomerase activity detection and bladder cancer diagnosis based on four detection-color states of difunctional gold nanoparticle (GNP) probes such as blue, purple, red, and precipitate. Specifically, we define the red GNP probe as origin, which represents urine extracts with inactive telomerase and implies normal individuals. The forward direction is corresponding to the detection of a relatively high concentration of active telomerase, in which system GNP probes assemble obviously and precipitate, predicting bladder cancer samples. The negative direction is corresponding to extracts with a relatively low concentration (purple) and without any telomerase (blue), which can be differentiated by naked eyes or UV-vis spectrum, indicating bladder cancer and normal individuals, respectively. More importantly, this noninvasive strategy shows great sensitivity and selectivity when tested by 18 urine specimens from bladder cancer patients, inflammation, and normal individuals.
authors.affiliation: Key Laboratory for Large-Format Battery Materials and Systems, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) , Wuhan, China.
authors.forename: Ruixue
authors.initials: R
authors.lastname: Duan
authors.forename: Boya
authors.initials: B
authors.lastname: Wang
authors.forename: Tianchi
authors.initials: T
authors.lastname: Zhang
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Zhang
authors.forename: Shaofang
authors.initials: S
authors.lastname: Xu
authors.forename: Zhifei
authors.initials: Z
authors.lastname: Chen
authors.forename: Xiaoding
authors.initials: X
authors.lastname: Lou
authors.forename: Fan
authors.initials: F
authors.lastname: Xia
mesh_terms: D014408:Biomarkers, Tumor / Q000652:urine*; D016022:Case-Control Studies; D003116:Color; D003124:Colorimetry / Q000379:methods*; D006046:Gold / Q000737:chemistry; D006801:Humans; D061986:MCF-7 Cells; D053768:Metal Nanoparticles / Q000737:chemistry*; D015335:Molecular Probes / Q000737:chemistry*; D066329:Protein Aggregates; D012680:Sensitivity and Specificity; D019098:Telomerase / Q000652:urine*; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis* / Q000652:urine
chemical_list: D014408:Biomarkers, Tumor; D015335:Molecular Probes; D066329:Protein Aggregates; D006046:Gold; D019098:Telomerase