PXD008384 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Micro-metastases regression following primary tumor excision: a critical role for primary tumor secretome |
Description | Numerous case studies have reported spontaneous regression of metastases following tumor excision, but underlying mechanisms are elusive. Here we present a model of metastases regression and latency elicited by the removal of a primary tumor, and identify underlying mechanisms. Human breast cancer cells, expressing highly sensitive luciferase, were implanted into the mammary fat-pad of mice, and the progression of early stage micrometastases, was monitored. Upon establishment of micrometastases, the primary tumor was excised, inducing a robust regression of metastatic signal, resulting in latent foci. In vivo supplementation of tumor secretome immediately upon tumor excision diminished this regression, implicating primary tumor secreted factors in promotion of metastatic growth. In vitro, cancer cell conditioned medium reduced apoptosis and enhanced adhesion of non-confluent cancer cells, and induced angiogenesis in endothelial cells. Cytokine array and proteomic analysis of cancer cells secretome identified 359 extracellular secreted factors, with significant enrichment of angiogenic factors, growth factors activity, focal adhesion, apoptosis, and metalloprotease processes. In vivo blockade of four key potential mediators of these processes, IL-8, PDGFaa, Serpin E1 (PAI-1), and MIF, arrested development of micrometastases. Moreover, high protein levels of these four factors were correlated with poor patient outcome. These results demonstrate regression and latency of metastases following tumor excision and a crucial role for primary tumor secretome in promoting early metastatic stages, suggesting novel mechanisms to control minimal residual disease. |
HostingRepository | PRIDE |
AnnounceDate | 2024-10-22 |
AnnouncementXML | Submission_2024-10-22_05:13:07.461.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Tamar Geiger |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | No PTMs are included in the dataset |
Instrument | Q Exactive |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2017-12-07 03:11:37 | ID requested | |
1 | 2020-10-06 22:33:29 | announced | |
⏵ 2 | 2024-10-22 05:13:07 | announced | 2024-10-22: Updated project metadata. |
Publication List
Dataset with its publication pending |
Keyword List
curator keyword: Biomedical |
submitter keyword: Human, Breast Cancer, LC-MS, Cancer Microenvironment, Secretome, Metastasis |
Contact List
Doctor Tamar Geiger |
contact affiliation | Department of Human Molecular Genetics and Biochemistry Sackler Faculty of Medicine Tel Aviv University Israel |
contact email | geiger@tauex.tau.ac.il |
lab head | |
Tamar Geiger |
contact affiliation | Weizmann Institute of Science |
contact email | geiger@tauex.tau.ac.il |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD008384
- Label: PRIDE project
- Name: Micro-metastases regression following primary tumor excision: a critical role for primary tumor secretome