Bioelectrochemistry for miRNA detection

Anomalous expression of miRNAs has been linked with cell cycles such as cell proliferation, stress response, differentiation, cell apoptosis and inflammation, which present a manifestation of multitude types of disorders and malignancies. For this reason, miRNAs became a class of biomarkers that is in the research focus in recent years. Their detection in an early stage of diseases represents a difficult challenge for analytical chemists who need to design not only specific but also highly sensitive tools for their detection. The progress achieved in the bio-electrochemical detection of miRNAs in the last 2 years is highlighted and commented, focusing on the applicability of developed strategies for point-of-care sensing.