Exploring the Application of Nano-Differential Scanning Calorimetry in RNA Characterization

Recent advancements in calorimetric methods have enhanced the study of RNA folding transitions, enabling high-precision structural analysis. Among these methods, Differential Scanning Calorimetry (DSC) measures the excess heat capacity (C_p) of nucleic acids in solution by detecting differential heat flow between the sample and a reference as the temperature is increased at a constant rate. This technique captures folding or unfolding reactions, with peaks in DSC thermograms indicating transitions and melting points (T_m). Integrating these peaks provides the enthalpy change (ΔH), while the change in heat capacity (ΔCp) is derived from baseline differences. Overall, DSC is a powerful tool for detailed thermodynamic characterization of RNA, offering precise, direct, and comprehensive data without the need for sample modification-allowing for label-free measurements. Furthermore, DSC is versatile, enabling the study of RNA in the presence of various solvents or ligands.