Abstract
Purpose
lncRNA H19 has been considered as an oncogenic lncRNA in many human tumours. In the present study, we identify the role and molecular mechanism of lncRNA H19 in melanoma.
Method
QRT-PCR was used to detect the expression of lncRNA H19 and E2F3 was detected in melanoma tissues. Cell counting kit-8 (CCK8), representative metabolites analysis was used to explore the biological function of lncRNA H19, miR-106a-5p and E2F3 in melanoma cells. Bioinformatics, luciferase reporter assays, MS2-RIP and RNA pull-down assay was used to demonstrate the molecular mechanism of lncRNA H19 in melanoma. We further test the function of lncRNA H19 in vivo though Xenograft tumour assay.
Results
We found that lncRNA H19 was increased in melanoma tissue, and lncRNA H19 was correlated with poor prognosis of melanoma patients. miR-106a-5p acts as a tumour suppressor in melanoma by targeting E2F3. E2F3 affects the melanoma cell glucose metabolism and growth. We also demonstrated that lncRNA H19 may function as the sponge of miR-106a-5p to up-regulate E2F3 expression, and consequently promote the glucose metabolism and growth of melanoma.
Conclusions
This result elucidates a new mechanism for lncRNA H19 in melanoma development and provides a survival indicator and potential therapeutic target for melanoma patients.
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Funding
This study was funded by The Health and Family Planning Science and Technology Key project Foundation of Zhenjiang city (SHW2017004), The Social Development and Technology Support Foundation of Zhenjiang city (SH2011057), and The Clinical Medical Science and Technology Development Fund of Jiangsu University (JLY20160002).
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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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432_2018_2582_MOESM2_ESM.tif
Supplementary Figure 1 (A) lncRNA H19 was mainly distributed in cytoplasm analyzed by FISH. lncRNA H19 was labeled by Cy3 (red). Nucleus was stained by DAPI (blue). The tissue sections were observed in 400X magnification. The slides of cells were observed in 600X magnification. (B) The excision tumour in nude mice of A375 xenografts. (TIF 689 KB)
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Luan, W., Zhou, Z., Ni, X. et al. Long non-coding RNA H19 promotes glucose metabolism and cell growth in malignant melanoma via miR-106a-5p/E2F3 axis. J Cancer Res Clin Oncol 144, 531–542 (2018). https://doi.org/10.1007/s00432-018-2582-z
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DOI: https://doi.org/10.1007/s00432-018-2582-z