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Titre : | Exosomes of glioma cells deliver miR-148a to promote proliferation and metastasis of glioblastoma via targeting CADM1 |
Type de document : | article de périodique |
Auteurs : | Li Gong ; Anding Zhu ; Qian Cai, Auteur |
Année de publication : | 2018 |
Article en page(s) : | p. 643-651 |
Note générale : | https://doi.org/10.1016/j.bulcan.2018.05.003 |
Langues : | Français (fre) |
Descripteurs (mots clés) : | [Thésaurus Mesh]Biologie moléculaire [Thésaurus Mesh]Exosomes [Thésaurus Mesh]Glioblastome [Thésaurus Mesh]Métastase tumorale
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Mots-clés : | Glioblastome Métastase tumorale Biologie moléculaire Exosomes cellules de gliome miR-148a Prolifération CADM1 |
Résumé : | Exosomes are now considered to be involved in mediating cell-to-cell communication to promote or inhibit tumor progression. However, the role and molecular mechanism of exosomes in promoting glioblastoma (GBM) metastasis remains elusive. Here, we found that circulating exosomal miR-148a levels were significantly higher in serum from GBM patients compared with serum from healthy volunteers. In T98G cells, inhibition of miR-148a suppressed cell proliferation and metastasis. In addition, we identified Cell adhesion molecule 1 (CADM1) as a target gene of miR-148a using luciferase reporter assay. Both protein and mRNA levels of CADM1 were decreased in tissues from GBM patients. There was a strong negative correlation between exosomal miR-148a and CADM1 mRNA levels in samples of patients. Moreover, miR-148a antagonist increased p-STAT3 protein level to activate STAT3 pathway. In conclusion, our findings indicated that miR-148a delivered by exosomes may promote cancer cell proliferation and metastasis via targeting CADM1 to activate STAT3 pathway, suggesting a predictor and therapeutic target role of exosomal miR-148a in GBM patients. |
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