4.6 Article

Towards artificial intelligence to multi-omics characterization of tumor heterogeneity in esophageal cancer

Journal

SEMINARS IN CANCER BIOLOGY
Volume 91, Issue -, Pages 35-49

Publisher

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcancer.2023.02.009

Keywords

Esophageal cancer; Artificial intelligence; Multi-omics; Tumor heterogeneity; Tumor microenvironment

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Esophageal cancer is a highly heterogeneous malignancy, characterized by cellular, genetic, and phenotypic heterogeneity. This heterogeneity affects various aspects of the cancer progression. Although heterogeneity poses challenges in treatment, it also presents opportunities for new therapeutic strategies. Artificial intelligence, particularly machine learning and deep learning algorithms, can effectively analyze multi-omics data and contribute to precision oncology in esophageal cancer. This review focuses on the use of artificial intelligence in integrating multi-omics data and discusses novel techniques such as single-cell sequencing and spatial transcriptomics for understanding tumor heterogeneity.
Esophageal cancer is a unique and complex heterogeneous malignancy, with substantial tumor heterogeneity: at the cellular levels, tumors are composed of tumor and stromal cellular components; at the genetic levels, they comprise genetically distinct tumor clones; at the phenotypic levels, cells in distinct microenvironmental niches acquire diverse phenotypic features. This heterogeneity affects almost every process of esophageal cancer pro-gression from onset to metastases and recurrence, etc. Intertumoral and intratumoral heterogeneity are major obstacles in the treatment of esophageal cancer, but also offer the potential to manipulate the heterogeneity themselves as a new therapeutic strategy. The high-dimensional, multi-faceted characterization of genomics, epigenomics, transcriptomics, proteomics, metabonomics, etc. of esophageal cancer has opened novel horizons for dissecting tumor heterogeneity. Artificial intelligence especially machine learning and deep learning algo-rithms, are able to make decisive interpretations of data from multi-omics layers. To date, artificial intelligence has emerged as a promising computational tool for analyzing and dissecting esophageal patient-specific multi-omics data. This review provides a comprehensive review of tumor heterogeneity from a multi-omics perspec-tive. Especially, we discuss the novel techniques single-cell sequencing and spatial transcriptomics, which have revolutionized our understanding of the cell compositions of esophageal cancer and allowed us to determine novel cell types. We focus on the latest advances in artificial intelligence in integrating multi-omics data of esophageal cancer. Artificial intelligence-based multi-omics data integration computational tools exert a key role in tumor heterogeneity assessment, which will potentially boost the development of precision oncology in esophageal cancer.

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