Ott, C.A.* ; Linck, L.* ; Kremmer, E. ; Meister, G.* ; Bosserhoff, A.K.*
Induction of exportin-5 expression during melanoma development supports the cellular behavior of human malignant melanoma cells.
Oncotarget 7, 62292-62304 (2016)
Regulation of gene expression via microRNAs is known to promote the development of many types of cancer. In melanoma, miRNAs are globally up-regulated, and alterations of miRNA-processing enzymes have already been identified. However, mis-regulation of miRNA transport has not been analyzed in melanoma yet. We hypothesized that alterations in miRNA transport disrupt miRNA processing. Therefore, we investigated whether the pre-miRNA transporter Exportin-5 (XPO5) was involved in altered miRNA maturation and functional consequences in melanoma. We found that XPO5 is significantly over-expressed in melanoma compared with melanocytes. We showed enhanced XPO5 mRNA stability in melanoma cell lines which likely contributes to up-regulated XPO5 protein expression. In addition, we identified MEK signaling as a regulator of XPO5 expression in melanoma. Knockdown of XPO5 expression in melanoma cells led to decreased mature miRNA levels and drastic functional changes. Our data revealed that aberrant XPO5 expression is important for the maturation of miRNAs and the malignant behavior of melanoma cells. We suggest that the high abundance of XPO5 in melanoma leads to enhanced survival, proliferation and metastasis and thereby supports the aggressiveness of melanoma.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Xpo5 ; Mrna Stability ; Malignant Melanoma ; Mir-snp ; Microrna; Single-nucleotide Polymorphisms; Mediates Nuclear Export; Protein-kinase Kinase; Double-stranded-rna; Microprocessor Complex; Microrna Biogenesis; Argonaute Proteins; Cancer; Inhibitor; Gene
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2016
Prepublished im Jahr
HGF-Berichtsjahr
2016
ISSN (print) / ISBN
1949-2553
e-ISSN
1949-2553
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 7,
Heft: 38,
Seiten: 62292-62304
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Impact Journals LLC
Verlagsort
Albany
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er)
Immune Response and Infection
PSP-Element(e)
G-501793-001
Förderungen
Copyright
Erfassungsdatum
2016-08-26