期刊
TALANTA
卷 225, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.talanta.2020.121982
关键词
Aptamers; Biosensors; Breast cancer; Spectroscopic ellipsometry; VEGF
资金
- Scientific Research Projects Division of Bilecik Seyh Edebali University (BSEU-BAP, Bilecik, Turkey) [2019-01.BSEU.03-03]
A sensitive and selective sensor based on aptamer and spectroscopic ellipsometry was developed for early diagnosis of breast cancer. The sensor achieved a detection range of VEGF165 from 1 pM to 1000 pM in buffer, with detection limits of 5.81 pM and 4.29 pM, respectively.
A sensitive and selective, aptamer and spectroscopic ellipsometry based sensor is reported here for the early diagnosis of breast cancer, which is a common type of cancer following lung cancer. It was aimed to develop a single-step and label-free assay for the sensitive and selective detection of VEGF165. To this end, two different aptamers and spectroscopic ellipsometry were used. In the presented study, by determining the appropriate aptamer immobilization conditions, the spectroscopic ellipsometry technique was successfully applied for the detection of VEGF165 at the range of 1 pM-1000 pM in the buffer. Aptasensors have a detection limit of 5.81 pM and 4.29 pM, respectively.
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