A uniquely advanced solution to prep for mass spec analysis, the platform’s capabilities and streamlined workflows offers advantages over traditional methods like laser capture microdissection (LCM), antibody-based imaging workflows, and proximity labeling.
Explore cellular and subcellular interactions that shape health and disease like never before.
Extract all proteomic information without antibodies or targeted panels across an entire sample.
350 nm precision at sub-cellular scale.
Use with FFPE/fresh frozen tissue samples or fixed cells.
Discover novel biomarkers or therapeutic targets of disease-associated locations.
Discover low copy number proteins from increased dynamic range due to subcellular protein isolation.
novel proteomes of organelles, cells and organisms.
Two photon guided photo-biotinylation identifies only proteins in regions of interest.
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“The enrichment in the data is the best I’ve ever seen.”
-Michael Ford, PhD, Founder, MS Bioworks
Cells (Fixed, Frozen) or Tissue (FFPE, Fresh Frozen, PFA/Methanol fixed) are stained with a marker that the researcher uses to predefine areas for deeper proteomic analysis. This can be stained with an immunofluorescent marker, multiple markers or other anatomical marker of interest that can be identified via microscopy. One can define these regions based on size, shape, location, distance, and intensity. The user places the stained sample on the Microscoop stage and the sample is imaged. These ROI’s are identified manually within one field of view (FOV) and converted by the Microscoop Autoscoop Software to an image mask, a binary parameter, that tells the system which specific locations to target for whole proteome analysis. The image mask is automatically applied to the entire sample. The ROI’s are the “blueprint” by which the 2-photon laser uses in the next step to target the specific locations of interest.
The Synlight Rich kit, containing a photobiotinylation reagent, is applied to the entire sample. A femtosecond light source is controlled mechatronically is used to illuminate the region of interest one pixel at a time. This patterned illumination triggers targeted protein photo-biotinlyation with high spatial precision through the reactions of light-sensitive probes of the Synlight-Rich™ Kit. This patterned photolabeling is repeated for hundreds to thousands of FOVs automatically. The number of photolabeling events is dictated by the size and quantity of the ROI’s. The intention is to aggregate all ROI protein material together to ensure there is sufficient protein to go through the protein extraction and input to downstream mass spectrometry or alternative downstream proteomic readouts. This entire step is done automatically and requires no user intervention until all pixels are labeled by the laser across the FOV’s of interest.
The entire sample contents are collected from the slide or chamber. Materials from multiple slides or chambers can be pooled together to increase the total protein content. The Synpull Kit is used to carry out the next steps of extraction. Using the kit, the samples are lysed, biotinylated proteins are enriched and purified by immunoprecipitation, and proteins digested into peptides for proteomic analysis.
The collected peptides can be lyophilized for downstream proteomic analysis. Typically, an unbiased proteomic analysis of the protein lysate collected from the Synpull Assay is performed on a mass spectrometer (LC-MS/MS). Proteomes of both the photo-labeled and unlabeled (control) samples are obtained. By comparing the proteomic makeup of the control and photolabeled samples, a location-specific proteome is obtained with high sensitivity and, high specificity with high spatial precision. Validation can be done by colocalization of immunostaining, subsequent follow-on mass spec experiments or additional functional assays. Unique analyses like differential protein expression, treatment/control, disease/normal, and post translational modifications can also be carried out with the output of the Microscoop.
