Integrating multi-layer intratumor heterogeneity analysis to advance cancer immunotherapy
By
Yardena Samuels3 Send email to [email protected]
Master baker tier. Every paragraph earns its place on the tray.
Summary
This article examines intratumor heterogeneity (ITH) as a multidimensional problem in cancer biology. It discusses how tumors consist of diverse malignant and non-malignant cell populations that co-evolve within the same lesion. While genetic-level ITH (subclonal mutations and copy-number alterations) has long been recognized, the article argues that genetic variation alone cannot fully explain differences in tumor behavior, immune recognition, and therapeutic response. The review emphasizes the importance of integrating ITH across multiple biological layers—including genetic, epigenetic, transcriptomic, and proteomic levels—to better understand tumor immunity and guide next-generation immunotherapy strategies.
Key quotes
· 4 pulledTumors are complex and dynamic ecosystems composed of diverse malignant and non-malignant cell populations that coexist and co-evolve within the same lesion.
Cancer cell diversity, broadly referred to as intratumor heterogeneity (ITH), has long been appreciated at the genetic level, where subclonal mutations and copy-number alterations (CNAs) fuel tumor evolution, disease progression, and resistance to therapy.
It is now clear that genetic variation alone cannot fully explain differences in tumor behavior, immune recognition, and therapeutic response.
This review highlights the importance of integrating intratumor heterogeneity across layers for guiding next-generation immunotherapy strategies.
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