Tumor-stroma interactions are referred to as essential events in tumor progression. There has been growing attention that bone marrow-derived mesenchymal stem cells (BMSCs) can travel to tumor stroma, where they differentiate into tumor-associated fibroblast (TAF)-like cells, a predominant tumor-promoting stromal cell. However, little is definitively known about the contributors for this transition. Here, using an in vitro direct co-culture model of colon cancer cells and BMSCs, we identify that colon cancer cells can induce adjoining BMSCs to exhibit the typical characteristic of TAFs, with increased expression of a-smooth muscle actin (a-SMA). Importantly, the present data also reveals that activated Notch signaling mediates transformation of BMSCs to TAFs through the downstream TGF-ß/Smad signaling pathway.
|Number of pages||6|
|Journal||Biochemical and Biophysical Research Communications|
|Early online date||22 Jul 2014|
|Publication status||Published - 15 Aug 2014|