The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Wnt 5a signaling is critical for macrophage-induced invasion of breast cancer cell lines
Abstract
Interactions between neoplastic and stromal cells contribute to tumor progression. Wnt genes, involved in cell migration and often deregulated in cancers, are attractive candidates to regulate these effects. We have recently shown that coculture of breast cancer cells with macrophages enhances invasiveness via matrix metalloproteases and TNF-α. Here we demonstrate that coculture of MCF-7 cells and macrophages leads to up-regulation of Wnt 5a in the latter. This was accompanied by activation of AP-1/c-Jun in MCF-7. Recombinant Wnt 5a mimicked the coculture effect. Wnt 5a was also detectable in tumor-associated macrophages in primary breast cancers. Experiments with agonists and antagonists of Wnt signaling revealed that a functional canonical pathway in the tumor cells was a necessary prerequisite; however, noncanonical signaling via Wnt 5a and the Jun-N-terminal kinase pathway was critical for invasiveness. It was also responsible for induction of matrix metalloprotease-7, known to release TNF-α. All these effects could be antagonized by dickkopf-1. Our results indicate that Wnt 5a is essential for macrophage-induced invasiveness, because it regulates tumor cell migration as well as proteolytic activity of the macrophages. The function of Wnt 5a as either a suppressor or promoter of malignant progression seems to be modulated by intercellular interactions. Wnt 5a detection in tumor-associated macrophages in breast cancer biopsies supports the assumption that similar events play a role in vivo.
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Cites
Functional interaction of β-catenin with the transcription factor LEF-1
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Dishevelled activates Ca2+ flux, PKC, and CamKII in vertebrate embryos
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Trophic macrophages in development and disease
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M2 Macrophage-Derived Exosomes Promote Cell Migration and Invasion in Colon Cancer
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Flavonoids: Potential Wnt/beta-catenin signaling modulators in cancer
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Deletion of Wnt5a in osteoclasts results in bone loss through decreased bone formation
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Metadata
- Authors
- Pukrop, T., Klemm, F., Hagemann, T., Gradl, D., Schulz, M., Siemes, S., Trümper, L., & Binder, C.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2006-04-04
- Volume
- 103
- Issue
- 14
- Pages
- 5454-5459
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2059143300
- Cited by
- 363
- References
- 4
- FWCI
- 7.24
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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