Cancer metastasis relies heavily on altered lipid metabolism, yet the precise mechanisms linking fatty acid saturation states to metastatic progression remain poorly understood. Saturated and unsaturated fatty acids appear to differentially influence energy production, membrane composition, and signaling pathways, thereby shaping the tumor microenvironment and metastatic potential.
- To advance our understanding, we will develop and apply a novel, high-throughput, bond-specific three-dimensional (3D) optical microscopy method—Optically Detected Mid-IR 3D (O-MIR) microscopy—that overcomes current limitations in live-cell metabolic imaging. Existing approaches, including fluorescence imaging and Raman-based techniques, are constrained by labeling requirements, photobleaching, and low signal throughput.
- By integrating computational microscopy, mid-infrared (IR) spectroscopy, and click-free bio-orthogonal probes, our method will enable bond-specific, sub-micrometer resolution and rapid 3D live-cell imaging within both the mid-IR fingerprint and “cell-silent” spectral windows, facilitating direct, real-time tracking of fatty acids and their metabolic transformations.