Journal
CHEMOSENSORS
Volume 8, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/chemosensors8030054
Keywords
electrochemical biosensor; CV; DPV; EIS; oral cancer; interleukin-6 (IL-6); interleukin-8 (IL-8); tumor necrosis factor alpha (TNF-alpha); cytokeratin 19 fragments (CYFRA 21-1); CD 59; cancerous inhibitor of PP2A (CIP2A)
Funding
- Young Scholar Fellowship Program by Ministry of Science and Technology (MOST) in Taiwan [MOST 108-2636-E-009-012, 109-2636-B-009-001]
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Oral cancer poses a serious threat worldwide owing to its soaring case-fatality rate and its metastatic characteristics of spreading to the other parts of the body. Despite the recent breakthroughs in biomedical sciences, the detection of oral cancer at an early stage is still challenging. Conventional diagnosis in clinics and optical techniques to detect oral cancer in the initial stages are quite complicated as well as not completely accurate. To enhance the survival rate of oral cancer patients, it is important to investigate the novel methodologies that can provide faster, simpler, non-invasive, and yet ultraprecise detection of the onset of oral cancer. In this review, we demonstrate the promising aspects of an electrochemical biosensor as an ideal tool for oral cancer detection. We discuss the cutting-edge methodologies utilizing various electrochemical biosensors targeting the different kinds of biomarkers. In particular, we emphasize on electrochemical biosensors working at the molecular levels, which can be classified into mainly three types: DNA biosensors, RNA biosensors and protein biosensors according to the types of the analytes. Furthermore, we focus on the significant electrochemical methods including cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) to analyze the oral cancer biomarkers (such as IL-6, IL-8, CYFRA 21-1, CD 59 and CIP2A) present in body fluids including saliva and serum, using non-invasive manner. Hence, this review provides essential insights into the development of pioneering electrochemical biosensors for the detection of oral cancer at an early stage.
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