# Flexible Cancer-Associated Chromatin Configuration (CACC) Might Be the Fundamental Reason Why Cancer Is So Difficult to Cure

## TL;DR

This paper proposes that the flexibility of cancer-associated chromatin configuration (CACC) underlies cancer's resilience and heterogeneity, suggesting targeting CACC flexibility could improve treatment strategies.

## Contribution

It introduces the hypothesis that flexible CACC is linked to cell potency and cancer adaptability, offering a new perspective on cancer's difficulty to cure.

## Key findings

- Flexible CACC correlates with increased cell potency.
- CACC flexibility enables heterogeneity and resource utilization in cancer.
- Restricting CACC flexibility could potentially revert cancer cells to normal.

## Abstract

We once proposed that cell-type-associated chromatin configurations determine cell types and that cancer cell type is determined by cancer-associated chromatin configuration (CACC). In this paper, we hypothesize that flexible cell-type-associated chromatin configuration is associated with cell potency and has an advantage over inflexible one in regulating genome related activities, such as DNA replication, DNA transcription, DNA repair, and DNA mutagenesis. The reason why cancer is so difficult to treat is because CACC is flexible, which enables cancer cells not only to produce heterogeneous subclones through limited cell differentiation, but also to maximally and efficiently use genome related resources to survive environmental changes. Therefore, to beat cancer, more efforts should be made to restrict the flexibility of CACC or to change CACC so that cancer cells can be turned back to normal or become less malignant.

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Source: https://tomesphere.com/paper/1906.02710