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Clinical Proteomics for Solid Organ Tissues
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DOI：10.1016/j.mcpro.2023.100648.png)
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摘要
En 中文
The evaluation of biopsied solid organ tissue has long relied on visual examination using a microscope. Immunohistochemistry is critical in this process, labeling and detecting cell lineage markers and therapeutic targets. However, while the practice of immunohistochemistry has reshaped diagnostic pathology and facilitated improvements in cancer treatment, it has also been subject to pervasive challenges with respect to standardization and reproducibility. Efforts are ongoing to improve immunohistochemistry, but for some applications, the benefit of such initiatives could be impeded by its reliance on monospecific antibody -protein reagents and limited multiplexing capacity. This perspective surveys the relevant challenges facing traditional immunohistochemistry and describes how mass spectrometry, particularly liquid chromatography -tandem mass spectrometry, could help alleviate problems. In particular, targeted mass spectrometry assays could facilitate measurements of individual proteins or analyte panels, using internal standards for more robust quantification and improved interlaboratory reproducibility. Meanwhile, untargeted mass spectrometry, showcased to date clinically in the form of amyloid typing, is inherently multiplexed, facilitating the detection and crude quantification of 100s to 1000s of proteins in a single analysis. Further, data -independent acquisition has yet to be applied in clinical practice, but offers particular strengths that could appeal to clinical users. Finally, we discuss the guidance that is needed to facilitate broader utilization in clinical environments and achieve standardization.
Keyword:
TANDEM MASS-SPECTROMETRY
DIAGNOSTIC IMMUNOHISTOCHEMISTRY RECOMMENDATIONS
DATA-INDEPENDENT ACQUISITION
OBSERVER VARIATION
LC-MS/MS
PREANALYTICAL VARIABLES
CANCER PATIENTS
GASTRIC-CANCER
TUMOR-TISSUES
HUMAN PLASMA
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