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- W2894598243 abstract "Abstract All breast cancers are assessed for levels of human epidermal growth factor receptor 2 (HER2). Fluorescence in situ hybridization (FISH) and immunohistochemistry are currently used to determine if a patient is eligible for anti-HER2 therapy. Limitations of both tests include variability and relatively long processing times. Additionally, neither test determines whether HER2 contains the extracellular domain. While truncated in some tumors, this domain is required for binding of the therapeutic antibody trastuzumab. Here, trastuzumab was used to directly detect HER2 with quantitative single molecule localization microscopy (qSMLM). In proof of concept studies, our new method rapidly quantified both HER2 density and features of nano-organization. In cultured cells, the method was sensitive to subtle variations in HER2 expression. To assess patient samples, we combined qSMLM with tissue touch preparation (touch prep-qSMLM) and examined large areas of intact membranes. For cell lines and patient samples, HER2 copy numbers from FISH showed a significant positive correlation with detected densities from qSMLM and trended with HER2 cluster occupancy." @default.
- W2894598243 created "2018-10-12" @default.
- W2894598243 creator A5003378933 @default.
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- W2894598243 creator A5031678728 @default.
- W2894598243 creator A5050914942 @default.
- W2894598243 creator A5058020504 @default.
- W2894598243 date "2018-10-11" @default.
- W2894598243 modified "2023-10-16" @default.
- W2894598243 title "Single molecule localization microscopy coupled with touch preparation for the quantification of trastuzumab-bound HER2" @default.
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- W2894598243 doi "https://doi.org/10.1038/s41598-018-33225-0" @default.
- W2894598243 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6181918" @default.
- W2894598243 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30310083" @default.
- W2894598243 hasPublicationYear "2018" @default.
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