Single cell analysis reveals that SPP1+ macrophages enhance tumor progression by triggering fibroblast extracellular vesicles
Patients with liver metastatic colorectal cancer (mCRC) have a poor prognosis and are the leading cause of death in colorectal cancer (CRC) patients, but the mechanisms associated with CRC metastasis have not been fully elucidated. In this study, we obtained data from the Gene Expression Omnibus database and characterized the single-cell profiles of CRC, mCRC and healthy samples at single-cell resolution, and explored the cells that influence CRC metastasis. We find that AQP1<sup>+</sup> CRC identified as highly malignant tumor cells exhibited proliferative and metastatic characteristics. Immunosuppressive properties are present in the tumor microenvironment (TME), while NOTCH3<sup>+</sup> Fib is identified to play a facilitating role in the metastatic colonization of CRC. Importantly, we reveal that tumor-associated macrophages (TAM) characterized by SPP1-specific high expression may be involved in TME remodeling through intercellular communication. Specifically, SPP1<sup>+</sup> TAM mediates the generation of Fib-derived extracellular vesicle through the APOE-LRP1 axis, which in turn delivers tumor growth-promoting factors in the TME. This study deepens the understanding of the mechanism of TME in mCRC and lays the scientific foundation for the development of therapeutic regimens for mCRC patients.
Authors
- F. Zeng (ORCID: https://orcid.org/0000-0001-9235-0750)
- Zequn Chen (ORCID: https://orcid.org/0000-0002-2931-9854)
- Chunhui Cui (ORCID: https://orcid.org/0000-0001-7338-519X)
- Haocheng Wang (ORCID: https://orcid.org/0000-0002-5033-0230)
- Ying Yao (ORCID: https://orcid.org/0000-0003-4494-0259)
- Bowen Qiu (ORCID: https://orcid.org/0000-0003-2554-6790)
- Yingming Fan
- Jun Shi (ORCID: https://orcid.org/0000-0002-8531-0483)
- Chengyu Huang (ORCID: https://orcid.org/0000-0002-6473-8800)
- Qian Wang (ORCID: https://orcid.org/0000-0002-5031-0686)
- Ziying Wu (ORCID: https://orcid.org/0000-0002-5127-5253)
- Junpeng Huang (ORCID: https://orcid.org/0000-0002-8269-3693)
- Ke Mo (ORCID: https://orcid.org/0009-0003-5910-6299)
- Xinyu Li (ORCID: https://orcid.org/0000-0002-0424-2766)
- Qun Wang (ORCID: https://orcid.org/0000-0001-7929-7692)
- Ting Li (ORCID: https://orcid.org/0000-0001-5145-3024)
- Yixuan Chen (ORCID: https://orcid.org/0000-0002-4879-7165)
- Qingzhong Li (ORCID: https://orcid.org/0000-0002-7626-3929)
- Bingyao Li
- Hung‐Chen Chen
- X. Che
- Yue Wang (ORCID: https://orcid.org/0000-0002-4501-8699)
Institutions
- Guangzhou University of Chinese Medicine (CN)
- Guangzhou University (CN)
- Zhujiang Hospital (CN)
- Jining First People's Hospital (CN)
- The First People's Hospital of Zhaoqing (CN)
- Guangxi Academy of Sciences (CN)
- Southern Medical University (CN)
Publication Details
- Journal
- Translational Oncology
- Published
- 2025-03-13
- DOI
- https://doi.org/10.1016/j.tranon.2025.102347
- Citations
- 5
- Primary Topic
- Extracellular vesicles in disease
- Type
- article
- Field-Weighted Citation Impact
- 4.03