Figure 3. Clonal evolution of breast cancer cell subpopulations in patients with bone metastases from breast cancer. (A, B) Pseudo-time values (A) and developmental trajectories (B) of breast cancer cell subpopulations, with pie charts representing the proportion of control and breast cancer bone metastasis patients in breast cancer cell subpopulations. (C) Co-expression modules of transcription factors in breast cancer cell subpopulations of patients with breast cancer bone metastases. Left: Identification of regulator modules based on the regulator’s linkage specificity index matrix. Middle: representative transcription factors and their binding patterns in the modules. Right panel: cell subpopulations in which transcription factors are located. (D) Single-cell atlas showing transcription factors regulating breast cancer cell subpopulations.