AI Article Synopsis
- High expression of the cell-adhesion glycoprotein PODXL is linked to a more aggressive form of pancreatic cancer and is associated with poorer overall survival for patients.
- PODXL facilitates the movement and invasion of pancreatic cancer cells by binding to the protein gelsolin, which is part of the cell's cytoskeleton.
- Reducing PODXL or gelsolin levels decreases cell membrane protrusions and their associated actin structures, leading to lowered cell motility and invasiveness.
Article Abstract
The cell-adhesion glycoprotein PODXL is associated with an aggressive tumor phenotype in several forms of cancer. Here, we report that high PODXL expression was an independent predictor of worse overall survival of pancreatic cancer patients, and that PODXL promoted pancreatic cancer cell motility and invasion by physically binding to the cytoskeletal protein gelsolin. Suppression of PODXL or gelsolin decreased membrane protrusions with abundant peripheral actin structures, and in turn inhibited cell motility and invasion. Transfection of a PODXL-rescue construct renewed the expression of gelsolin bound to peripheral actin structures in cell protrusions, and abrogated the decreased cell protrusions caused by the knockdown of PODXL. Furthermore, transfection of a PODXL-rescue construct into pancreatic cancer cells in which both PODXL and gelsolin were suppressed failed to increase the formation of the protrusions. Thus, PODXL enhances motility and invasiveness through an increase in gelsolin-actin interactions in cell protrusions.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5084665 | PMC |
| http://dx.doi.org/10.1111/cas.13018 | DOI Listing |
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