Scientists Discover Hidden Cancer Cells in Breast Tumors

Topic: Medicine

Researchers from Imperial College London and UCL created a detailed map of breast tumors. They found that some cancer cells are hidden behind protective barriers and can survive treatment. This discovery may change the way we treat cancer.

Researchers at the MRC Laboratory of Medical Sciences (LMS), Imperial College London, and UCL Genetics Institute have made a groundbreaking discovery about breast cancer. They created a detailed map of breast tumors using publicly available data. The map revealed that some cancer cells are hidden behind protective barriers.

These hidden cells are called 'dormant' or 'quiescent' cells. They can survive treatment and may later contribute to cancer spreading or returning. Dr. Alexis Barr, co-lead author and head of the Cell Cycle Control group at the LMS, explains that these cells are very dangerous because they can hide from chemotherapy and then reactivate to drive proliferation.

The researchers used a technique called single-cell RNA sequencing to study individual cells in the tumor. They combined this with spatial transcriptomics, which shows where those cells are positioned and which neighboring cells are nearby. This allowed them to see that dormant cancer cells were frequently located close to immune cells and tumor-supporting cells.

This discovery may change the way we treat cancer. The researchers suggest that future cancer therapies may need to target not only fast-growing tumor cells but also dormant cancer cells and their protective environments.

Why It Matters

This discovery is important because it can help us develop more effective treatments for breast cancer. It also highlights the importance of understanding how cancer cells interact with their environment.

Key Facts

• Researchers from Imperial College London and UCL created a detailed map of breast tumors using publicly available data.
• The map revealed that some cancer cells are hidden behind protective barriers, called 'dormant' or 'quiescent' cells.
• These hidden cells can survive treatment and may later contribute to cancer spreading or returning.
• Dr. Alexis Barr and his team used single-cell RNA sequencing and spatial transcriptomics to study individual cells in the tumor.
• The discovery may change the way we treat cancer, with a focus on targeting dormant cancer cells and their protective environments.

Key Terms

Quiescent

A state of dormancy or inactivity, where cells are not actively growing or dividing.

Single-cell RNA sequencing

A technique used to study individual cells by analyzing their genetic material and gene expression.

Implications

This discovery is important because it can help us develop more effective treatments for breast cancer. It also highlights the importance of understanding how cancer cells interact with their environment.