Here, multispectral imaging flow cytometry with an analytical feature that compares bright detail images of 3 autophagy markers and quantifies their co-localization, along with LC3 spot counting, was used to measure autophagy in an objective, quantitative, and statistically robust manner.
Methods are described for ultrasensitive quantification of biomarker proteins using an immunoassay system capable of single molecule counting. The platform can be used to quantify a wide array of proteins in a variety of tissues from several species. This exemplar assays interleukin-6 in human serum from pediatric concussion patients.