Spatial Omics Sequencing Based on Microfluidic Array Chips

Spatial profiling technologies fill the gap left by the loss of spatial information in traditional single-cell sequencing, showing great application prospects. After just a few years of quick development, spatial profiling technologies have made great progress in resolution and simplicity. This review introduces the development of spatial omics sequencing based on microfluidic array chips and describes barcoding strategies using various microfluidic designs with simplicity and efficiency. At the same time, the pros and cons of each strategy are compared. Moreover, commercialized solutions for spatial profiling are also introduced. In the end, the future perspective of spatial omics sequencing and research directions are discussed.

DhITACT: DNA Hydrogel Formation by Isothermal Amplification of Complementary Target in Fluidic Channels

DNA hydrogel formation by isothermal amplification of complementary targets in microfluidic channels (DhITACT) is a new platform for rapid and accurate detection of infectious pathogens. DNA hydrogel is formed in situ within microfluidic channels by the isothermal rolling circle amplification process upon the selective binding of target strands from the biological fluid. Once the volume of DNA hydrogel sufficiently enlarges, it can selectively block the matching channels with target pathogens.