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Spatiotemporal lineage tracing reveals the dynamic spatial architecture of tumor growth and metastasis

Jones, M. G.; Sun, D.; Min, K. H.; Colgan, W. N.; Tian, L.; Weir, J. A.; Chen, V. Z.; Koblan, L. W.; Yost, K. E.; Mathey-Andrews, N.; Russell, A. J. C.; Stickels, R. R.; Balderrama, K. S.; Rideout, W. M.; Chang, H. Y.; Jacks, T.; Chen, F.; Weissman, J. S.; Yosef, N.; Yang, D.

2024-10-24 cancer biology
10.1101/2024.10.21.619529 bioRxiv
Show abstract

Tumour progression is driven by dynamic interactions between cancer cells and their surrounding microenvironment. Investigating the spatiotemporal evolution of tumours can provide crucial insights into how intrinsic changes within cancer cells and extrinsic alterations in the microenvironment cooperate to drive different stages of tumour progression. Here, we integrate high-resolution spatial transcriptomics and evolving lineage tracing technologies to elucidate how tumour expansion, plasticity, and metastasis co-evolve with microenvironmental remodelling in a Kras;p53-driven mouse model of lung adenocarcinoma. We find that rapid subclonal expansion contributes to a hypoxic, immunosuppressive, and fibrotic microenvironment that is associated with the emergence of pro-metastatic cancer cell states. Furthermore, metastases arise from spatially-confined subclones of primary tumours and remodel the distant metastatic niche into a fibrotic, collagen-rich microenvironment. Together, we present a comprehensive dataset integrating spatial assays and lineage tracing to elucidate how sequential changes in cancer cell state and microenvironmental structures cooperate to promote tumour progression.

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