Feuerer, Lena and Lamm, Susanne and Henz, Ingmar and Kappelmann-Fenzl, Melanie and Haferkamp, Sebastian and Meierjohann, Svenja and Hellerbrand, Claus and Kuphal, Silke and Bosserhoff, Anja Katrin (2019) Role of melanoma inhibitory activity in melanocyte senescence. PIGMENT CELL & MELANOMA RESEARCH, 32 (6). pp. 777-791. ISSN 1755-1471, 1755-148X
Full text not available from this repository. (Request a copy)Abstract
The protein melanoma inhibitory activity (MIA) is known to be expressed in melanoma and to support melanoma progression. Interestingly, previous studies also observed the expression of MIA in nevi. Concentrating on these findings, we revealed that MIA expression is correlated with a senescent state in melanocytes. Induction of replicative or oncogene-induced senescence resulted in increased MIA expression in vitro. Notably, MIA knockdown in senescent melanocytes reduced the percentage of senescence-associated beta-Gal-positive cells and enhanced proliferation. Using the melanoma mouse model Tg(Grm1), MIA-deficient mice supported the impact of MIA on senescence by showing a significantly earlier tumor onset compared to controls. In melanocytes, MIA knockdown led to a downregulation of the cell cycle inhibitor p21 in vitro and in vivo. In contrast, after induction of hTERT in human melanoma cells, p21 regulation by MIA was lost. In summary, our data show for the first time that MIA is a regulator of cellular senescence in human and murine melanocytes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CELL-CYCLE ARREST; MALIGNANT-MELANOMA; ACTIVITY MIA; TELOMERASE ACTIVITY; BETA-GALACTOSIDASE; PROTEIN; EXPRESSION; GENE; ACTIVATION; CANCER; melanocyte; melanoma inhibitory activity; oncogene-induced senescence; p21; senescence; telomerase |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Dermatologie und Venerologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Mar 2020 07:02 |
| Last Modified: | 25 Mar 2020 07:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25951 |
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