Nanomaterial-Integrated Microfluidic Membrane for Enhanced Lysis in Point-of-Care TB Diagnostics

Suman Chakraborty of the Indian Institute of Technology Kharagpur in India will develop a membrane filtration system for Mycobacterium tuberculosis lysis and DNA purification from patient samples to enhance TB diagnosis. A paper-based membrane will be impregnated with two chemical agents, each in a separate layer, for sequential sample processing. Cell lysis will be performed in the first layer by zinc oxide nanoflowers, nanoscale structures that lyse bacterial cells through both mechanical and chemical mechanisms. DNA purification will be performed in the second layer by silica nanoparticles. This membrane system can be attached to a DNA amplification chamber with lyophilized reagents for colorimetric Loop-Mediated Isothermal Amplification (LAMP). This instrument-free, integrated process for TB diagnosis will be tested in a research setting and a clinical pathology laboratory setting.