UNSUPERVISED LEARNING OF CONTEXTUAL INFORMATION IN MULTIPLEX IMMUNOFLUORESCENCE TISSUE CYTOMETRY
文献类型： 会议论文
第一作者： Daniel Jimenez-Sanchez
作者： Daniel Jimenez-Sanchez 1 ; Mikel Ariz 1 ; Carlos Ortiz-de-Solorzano 1 ;
作者机构： 1.IDISNA, Ciberonc and Solid Tumors and Biomarkers Program, Center for Applied Medical Research, University of Navarra
关键词： Representation learning;Cell interactions;Multiplex image cytometry;Machine learning
会议名称： IEEE International Symposium on Biomedical Imaging
主办单位：
页码： 1275-1279
摘要： New machine learning models designed to capture the histopathology of tissues should account not only for the phenotype and morphology of the cells, but also learn complex spatial relationships between them. To achieve this, we represent the tissue as an interconnected graph, where previously segmented cells become nodes of the graph. Then the relationships between cells are learned and embedded into a low-dimensional vector, using a Graph Neural Network. We name this Representation Learning based strategy NARO (NAtural Representation of biological Objects), a fully-unsupervised method that learns how to optimally encode cell phenotypes, morphologies, and cell-to-cell interactions from histological tissues labeled using multiplex immunohistochemistry. To validate NARO, we first use synthetically generated tissues to show that NARO's generated embeddings can be used to cluster cells in meaningful, distinct anatomical regions without prior knowledge of constituent cell types and interactions. Then we test NARO on real multispectral images of human lung adenocarcinoma tissue samples, to show that the generated embeddings can indeed be used to automatically infer regions with different histopathological characteristics.
分类号： TP391.41-53
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