Erythropoietin enhances migration of human neuroblastoma cells: in vitro studies and potential therapeutic implications.
Journal of cancer stem cell research(2017)
Abstract
The erythropoietin receptor (EpoR) is expressed by cells from the erythroid lineage; however, evidence has accumulated that it is also expressed by some other non-hematopoietic tissues including several solid tumor cells and proposed candidates for cancer stem cells. This is an important concern, because recombinant erythropoietin (EPO) is frequently employed in cancer patients as a drug to ameliorate anemia related to chemo/radiotherapy. In our studies, we employed three human neuroblastoma (NB) cell lines and found in all of them the expression of EpoR and EPO mRNA. The functionality of EpoR in RMS cell lines was evaluated by chemotaxis, adhesion, and direct cell proliferation assays. We noticed that all three human NB cell lines responded to EPO stimulation by enhanced chemotaxis and cell adhesion. However, at the same time we did not observe any significant effect of EPO on proliferation. Based on this EPO supplementation in NB patients employed because of radio/chemotherapy induced anemias may have an unwanted side effect on tumor metastasis.
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Key words
erythropoietin (EPO),erythropoietin receptor (EpoR),metastasis,neuroblastoma
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