MicroRNA miR-125b induces senescence in human melanoma cells
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MicroRNA miR-125b induces senescence in human melanoma cells. / Glud, Martin; Manfé, Valentina; Biskup, Edyta; Holst, Line; Dirksen, Anne Marie Ahlburg; Hastrup, Nina; Nielsen, Finn C; Drzewiecki, Krzysztof T; Gniadecki, Robert.
I: Melanoma Research, Bind 21, Nr. 3, 01.06.2011, s. 253-6.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - MicroRNA miR-125b induces senescence in human melanoma cells
AU - Glud, Martin
AU - Manfé, Valentina
AU - Biskup, Edyta
AU - Holst, Line
AU - Dirksen, Anne Marie Ahlburg
AU - Hastrup, Nina
AU - Nielsen, Finn C
AU - Drzewiecki, Krzysztof T
AU - Gniadecki, Robert
PY - 2011/6/1
Y1 - 2011/6/1
N2 - MicroRNAs (miRNAs) are small noncoding RNA molecules involved in gene regulation. Aberrant expression of miRNA has been associated with the development or progression of several diseases, including cancer. In a previous study, we found that the expression of miRNA-125b (miR-125b) was two-fold lower in malignant melanoma producing lymph node micrometastases than in nonmetastasizing tumors. To get further insight into the functional role of miR-125b, we assessed whether its overexpression or silencing affects apoptosis, proliferation, or senescence in melanoma cell lines. We showed that overexpression of miR-125b induced typical senescent cell morphology, including increased cytoplasmatic/nucleus ratio and intensive cytoplasmatic ß-galactosidase expression. In contrast, inhibition of miR-125b resulted in 30-35% decreased levels of spontaneous apoptosis. We propose that downregulation of miR-125b in an early cutaneous malignant melanoma can contribute to the increased metastatic capability of this tumor.
AB - MicroRNAs (miRNAs) are small noncoding RNA molecules involved in gene regulation. Aberrant expression of miRNA has been associated with the development or progression of several diseases, including cancer. In a previous study, we found that the expression of miRNA-125b (miR-125b) was two-fold lower in malignant melanoma producing lymph node micrometastases than in nonmetastasizing tumors. To get further insight into the functional role of miR-125b, we assessed whether its overexpression or silencing affects apoptosis, proliferation, or senescence in melanoma cell lines. We showed that overexpression of miR-125b induced typical senescent cell morphology, including increased cytoplasmatic/nucleus ratio and intensive cytoplasmatic ß-galactosidase expression. In contrast, inhibition of miR-125b resulted in 30-35% decreased levels of spontaneous apoptosis. We propose that downregulation of miR-125b in an early cutaneous malignant melanoma can contribute to the increased metastatic capability of this tumor.
U2 - 10.1097/CMR.0b013e328345333b
DO - 10.1097/CMR.0b013e328345333b
M3 - Journal article
C2 - 21460750
VL - 21
SP - 253
EP - 256
JO - Melanoma Research
JF - Melanoma Research
SN - 0960-8931
IS - 3
ER -
ID: 34073547