Chung-Ang University Discovered Novel DNA Biosensor for Early Cervical Cancer Diagnosis
Chung-Ang University researchers have developed a novel electrochemical DNA biosensor based on a compositae material consisting of graphitic nano-onions and molybdenum disulfide nanosheets.
This biosensor exhibits high efficiency and specificity in detecting the presence of human papillomavirus (HPV)-16 and HPV-18, offering the potential for early diagnosis of cervical cancer.
Cervical cancer diagnosis involves identifying specific DNA sequences associated with HPV-16 and HPV-18. The researchers used a compositae material composed of graphitic nano-onions and molybdenum disulfide nanosheets.
This compositae not only enhances the conductive electron transfer compared to using nanosheets alone but also provides a robust platform for sensitive and precise detection of these target DNAs, thereby enabling early cervical cancer diagnosis.
Molybdenum disulfide (MoS2) has captured the interest of materials science researchers due to its ability to form two-dimensional nanosheets, like graphene.
Traditional immobilisation platforms for DNA have relied on carbon nanostructures. To effectively replace carbon with MoS2 as a capable electrochemical DNA sensor, there is a critical need for substantial improvements in the electrical conductivity of MoS2.
The research duo has created an electrochemical DNA biosensor using a compositae material consisting of graphitic nano-onions and molybdenum disulfide (MoS2) nanosheets. This biosensor is highly effective in detecting two specific strains of human papillomavirus (HPV), HPV-16 and HPV-18, and holds as a promising tool for early cervical cancer diagnosis.
The sensor successfully and specifically detected target DNAs from HPV-16 and HPV-18 obtained from Siha and Hela cancer cell lines. As a result, MoS2 nanosheets, enhanced in electrical conductivity through their interaction with nano-onions, offer a promising foundation for the development of effective and efficient electrochemical biosensors for the early diagnosis of a wide range of diseases, including cervical cancer.
