Subtype-specific circadian clock dysregulation modulates breast cancer biology, invasiveness, and prognosis.

ABSTRACT: Studies in shift workers and model organisms link circadian disruption to breast cancer. However, molecular rhythms in non-cancerous and cancerous human breast tissues are largely unknown. We reconstructed rhythms informatically, integrating locally collected, time-stamped biopsies with public datasets. For non-cancerous tissue, the inferred order of core-circadian genes matches established physiology. Inflammatory, epithelial-mesenchymal transition (EMT), and estrogen responsiveness pathways show circadian modulation. Among tumors, clock correlation analysis demonstrates subtype-specific changes in circadian organization. Luminal A organoids and informatic ordering of Luminal A samples exhibit continued, albeit disrupted rhythms. However, CYCLOPS magnitude, a measure of global rhythm stre

SUBMITTER: Hammarlund JA 

PROVIDER: S-EPMC10245642 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature