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| Pàgina inicial > Articles > Articles publicats > Epigenetic Silencing of Tumor Suppressor miR-124 Directly Supports STAT3 Activation in Cutaneous T-Cell Lymphoma |
| Data: | 2020 |
| Resum: | Increasing evidence supports a potential role for STAT3 as a tumor driver in cutaneous T-cell lymphomas (CTCL). The mechanisms leading to STAT3 activation are not fully understood; however, we recently found that miR-124, a known STAT3 regulator, is robustly silenced in MF tumor-stage and CTCL cells. Objective: We studied here whether deregulation of miR-124 contributes to STAT3 pathway activation in CTCL. Methods: We measured the effect of ectopic mir-124 expression in active phosphorylated STAT3 (p-STAT3) levels and evaluated the transcriptional impact of miR-124-dependent STAT3 pathway regulation by expression microarray analysis. Results: We found that ectopic expression of miR-124 results in massive downregulation of activated STAT3 in different CTCL lines, which resulted in a significant alteration of genetic signatures related with gene transcription and proliferation such as MYC and E2F. Conclusions: Our study highlights the importance of the miR-124/STAT3 axis in CTCL and demonstrates that the STAT3 pathway is regulated through epigenetic mechanisms in these cells. Since deregulated STAT3 signaling has a major impact on CTCL initiation and progression, a better understanding of the molecular basis of the miR-124/STAT3 axis may provide useful information for future personalized therapies. |
| Ajuts: | Instituto de Salud Carlos III PI19/00013 Instituto de Salud Carlos III PI18/0021 Ministerio de Economía y Competitividad PI16/00532 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-135 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Cutaneous T-cell lymphoma ; Mycosis fungoides ; Sézary syndrome ; STAT3 (signal transducer and activator of transcription-3) ; JAK/STAT (janus kinase/signal transducer and activator of transcription) ; Mir-124 |
| Publicat a: | Cells, Vol. 9 (december 2020) , ISSN 2073-4409 |
12 p, 1.5 MB |