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The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Polarity and proliferation are controlled by distinct signaling pathways downstream of PI3-kinase in breast epithelial tumor cells

Open access
Liu, Hong, Radisky, Derek C., Wang, Fei, Bissell, Mina J.·2004·The Journal of Cell Biology

Abstract

Loss of tissue polarity and increased proliferation are the characteristic alterations of the breast tumor phenotype. To investigate these processes, we used a three-dimensional (3D) culture system in which malignant human breast cells can be reverted to a normal phenotype by exposure to inhibitors of phosphatidylinositol 3-kinase (PI3K). Using this assay, we find that Akt and Rac1 act as downstream effectors of PI3K and function as control points of cellular proliferation and tissue polarity, respectively. Our results also demonstrate that the PI3K signaling pathway is an integral component of the overall signaling network induced by growth in 3D, as reversion affected by inhibition of PI3K signaling also down-modulates the endogenous levels of β1 integrin and epidermal growth factor receptor, the upstream modulators of PI3K, and up-regulates PTEN, the antagonist of PI3K. These findings reveal key events of the PI3K pathway that play distinct roles to maintain tissue polarity and that when disrupted are instrumental in the malignant phenotype.

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Metadata

Authors
Liu, H., Radisky, D. C., Wang, F., & Bissell, M. J.
Venue
The Journal of Cell Biology
Published
2004-02-09
Volume
164
Issue
4
Pages
603-612
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2086336448
Cited by
222
References
4
FWCI
7.43
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Polarity and proliferation are controlled by distinct signaling pathways downstream of PI3-kinase in breast epithelial tumor cells. https://app.cochat.ai/papers/10.1083/jcb.200306090
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Liu, H., Radisky, D. C., Wang, F., & Bissell, M. J. (2004). Polarity and proliferation are controlled by distinct signaling pathways downstream of PI3-kinase in breast epithelial tumor cells. The Journal of Cell Biology. https://doi.org/10.1083/jcb.200306090

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.