Abstract:
:Although fibroblast heterogeneity is recognized in primary tumors, both its characterization in and its impact on metastases remain unknown. Here, combining flow cytometry, immunohistochemistry and RNA-sequencing on breast cancer samples, we identify four Cancer-Associated Fibroblast (CAF) subpopulations in metastatic lymph nodes (LN). Two myofibroblastic subsets, CAF-S1 and CAF-S4, accumulate in LN and correlate with cancer cell invasion. By developing functional assays on primary cultures, we demonstrate that these subsets promote metastasis through distinct functions. While CAF-S1 stimulate cancer cell migration and initiate an epithelial-to-mesenchymal transition through CXCL12 and TGFβ pathways, highly contractile CAF-S4 induce cancer cell invasion in 3-dimensions via NOTCH signaling. Patients with high levels of CAFs, particularly CAF-S4, in LN at diagnosis are prone to develop late distant metastases. Our findings suggest that CAF subset accumulation in LN is a prognostic marker, suggesting that CAF subsets could be examined in axillary LN at diagnosis.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Pelon F,Bourachot B,Kieffer Y,Magagna I,Mermet-Meillon F,Bonnet I,Costa A,Givel AM,Attieh Y,Barbazan J,Bonneau C,Fuhrmann L,Descroix S,Vignjevic D,Silberzan P,Parrini MC,Vincent-Salomon A,Mechta-Grigoriou Fdoi
10.1038/s41467-019-14134-wsubject
Has Abstractpub_date
2020-01-21 00:00:00pages
404issue
1issn
2041-1723pii
10.1038/s41467-019-14134-wjournal_volume
11pub_type
杂志文章abstract::With the development of ultrafast electron and X-ray sources it is becoming possible to study structural dynamics with atomic-level spatial and temporal resolution. Because of their short mean free path, electrons are particularly well suited for investigating surfaces and thin films, such as the challenging and impor...
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