Abstract
Deregulation of microRNAs expression is symptomatic of cancer disease and occurs before the awareness of cancer signs. Early detection of cancer disease can improve or drop the disease entirely. DNA computing is an emerging field of detecting microRNAs based on toehold-mediated strand displacement reactions, which is a more efficient method than the commonly used method like real-time PCR. Accuracy and cost of diagnostic applications are essential criteria that are achieved by using the DNA logic gates based on the DNA computing method. In this study, the authors proposed the multi-input liver cancer biosensor with the RNA secondary structure motifs as the computational module and two approaches are suggested.