Single-cell sequencing and its application in breast cancer

Area of Science:

• Oncology
• Genomics
• Immunology

Background:

• Breast cancer progression involves genetic alterations and heterogeneity, often missed by traditional sequencing.
• Intratumoral, intertumoral, and interpatient heterogeneity are critical factors in breast cancer development and treatment response.
• Understanding the tumor microenvironment and cell-cell interactions is crucial for effective cancer therapy.

Purpose of the Study:

• To review single-cell sequencing technologies and their applications in breast cancer research.
• To elucidate the complex interactions between breast cancer cells and their microenvironment at a single-cell level.
• To provide a foundation for improved understanding of breast cancer pathogenesis and novel immunotherapeutic strategies.

Main Methods:

• Review of state-of-the-art single-cell sequencing technologies.
• Analysis of transcriptomic data, including gene copy number and expression.
• Exploration of cellular composition, differentiation, and tumor microenvironment mapping.

Main Results:

• Single-cell sequencing effectively characterizes genomic alterations and subclone evolution.
• Detailed analysis of tumor microenvironment and immune cell interactions (T cells, macrophages).
• Identification of potential new therapeutic targets and immune checkpoints.

Conclusions:

• Single-cell sequencing offers a powerful tool for deciphering breast cancer heterogeneity and complexity.
• This technology supports accurate patient stratification and the development of personalized therapies.
• Understanding tumor-immune cell crosstalk at the single-cell level opens new avenues for breast cancer immunotherapy.