کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1936136 | 1050684 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: MDR1 expression identifies human melanoma stem cells MDR1 expression identifies human melanoma stem cells](/preview/png/1936136.png)
ABC transporters are often found to be inherently expressed in a wide variety of stem cells, where they provide improved protection from toxins. We found a subpopulation of human melanoma cells expressing multidrug-resistance gene product 1 (MDR1). This fraction co-expresses the ABC transporters, ABCB5 and ABCC2 in addition to the stem cell markers, nanog and human telomerase reverse transcriptase (hTERT). The clonogenicity and self-renewal capacity of MDR1+ melanoma cells were investigated in single cell settings using the limiting dilution assay. We found that the MDR1+ cells, isolated by FACS sorting, demonstrated a higher self-renewal capacity than the MDR1− fraction, a key stem cell feature. Moreover, MDR1+ cells had higher ability to form spheres in low attachment conditions, a hallmark of cancer. In conclusion, these novel findings imply that the MDR1+ cells represent melanoma stem cells and thus should be considered as a unique cellular target for future anti-melanoma therapies.
Journal: Biochemical and Biophysical Research Communications - Volume 368, Issue 4, 18 April 2008, Pages 930–936