Single-cell RNA sequencing of primary colorectal cancer, matched adjacent normal tissues, and paired liver metastases

This study will perform single-cell RNA sequencing on primary tumor tissues (T) and matched adjacent non-tumor tissues (N) from six colorectal cancer patients, along with paired liver metastatic lesions (M) from three of these patients, to construct an integrated single-cell atlas spanning primary tumors, adjacent normal tissues, and distant metastases. This multi-region, patient-matched design enables systematic dissection of cellular heterogeneity, dynamic immune responses, and key molecular mechanisms driving metastasis in colorectal cancer.