TY - JOUR
T1 - MicroRNA-575 acts as a novel oncogene via targeting multiple signaling pathways in glioblastoma
AU - Gray, Ashley
AU - Cui, Tiantian
AU - Bell, Erica Hlavin
AU - McElroy, Joseph
AU - Sebastian, Ebin
AU - Li, Fuhai
AU - Geurts, Marjolein
AU - Liu, Kevin
AU - Robe, Pierre
AU - Haque, S. Jaharul
AU - Chakravarti, Arnab
N1 - Funding Information:
This work was supported by National Cancer Institute [ R01CA169368 (to A.C.), R01CA11522358 (to A.C.), R01CA1145128 (to A.C.), R01CA108633 (to A.C.), R01CA188228 (to A.C., R.B., K.L., and J.B.), 1RC2CA148190 (to A.C.), and U10CA180850-01 (to A.C.)]; A Brain Tumor Funders Collaborative Grant (to A.C.); Ohio State University Comprehensive Cancer Center Award (to A.C.). The T&P Bohnenn Fund for Neuro-Oncology Research (grant to P.A.R.).
Funding Information:
We thank Dr. Jeremy Rich ( UC San Diego , USA) for providing primary GBM patient-derived cells. We also thank The Ohio State University (OSU) Comprehensive Cancer Center Small Animal Imaging Core, The Ohio State University (OSU) Genomics Shared Resource (GSR), The Ohio State University (OSU) Target Validation Shared Resource (TVSR), and The Ohio State University (OSU) Comprehensive Cancer Center Pathology Core Facility supported in part by grant no. P30 CA016058, NCI.
Publisher Copyright:
© 2022
PY - 2022/10
Y1 - 2022/10
N2 - PURPOSE: Glioblastoma (GBM) patients currently face poor survival outcomes with an average survival period of <15 months, while only 3-5% of patients survive longer than 36 months. Although the mechanisms of tumorigenesis are still being elucidated, miRNAs are promising candidates to explore as novel and prognostic biomarkers in GBM. In this study, we identified the association between miR-575 expression and overall survival (OS) of primary GBM patients and undertook functional studies to discern the contribution of miR-575 to GBM tumorigenesis.METHODS: Total RNAs were isolated from 254 FFPE GBM tumor samples and miR expression was assayed (simultaneously) using NanoString Technologies. To determine the association between miR-575 and patients' prognosis, Kaplan-Meier, univariable and multivariable Cox regression analyses were performed. Cell proliferation, colony formation, migration assays were conducted to investigate the function of miR-575 in vitro and in vivo. In silico target gene network analysis was performed to identify the putative targets of miR-575 in GBM, which were further verified by luciferase reporter assay, as well as qPCR and immunoblotting.RESULTS: Our clinical data (n = 254) show that miR-575 is associated with worse GBM OS by univariable analysis (UVA, HR = 1.27, p-value<0.001) and multivariable (MVA, HR = 1.23, p = 0.007) analysis incorporating critical clinical variables. Functional studies indicated that overexpression of miR-575 significantly increased cell proliferation and migration of GBM cells in vitro, as well as tumor growth in vivo. Subsequent in silico target gene network and mechanistic studies identified CDKN1B/p27 and PTEN, as potential targets of miR-575 in GBM. MicroRNA-575 can also regulate the activity of AKT and ERK pathways in GBM.CONCLUSION: miR-575 has prognostic value in GBM, with higher expression associating with worse OS of patients, and contributes to GBM tumorigenesis by regulating multiple signaling pathways in GBM.
AB - PURPOSE: Glioblastoma (GBM) patients currently face poor survival outcomes with an average survival period of <15 months, while only 3-5% of patients survive longer than 36 months. Although the mechanisms of tumorigenesis are still being elucidated, miRNAs are promising candidates to explore as novel and prognostic biomarkers in GBM. In this study, we identified the association between miR-575 expression and overall survival (OS) of primary GBM patients and undertook functional studies to discern the contribution of miR-575 to GBM tumorigenesis.METHODS: Total RNAs were isolated from 254 FFPE GBM tumor samples and miR expression was assayed (simultaneously) using NanoString Technologies. To determine the association between miR-575 and patients' prognosis, Kaplan-Meier, univariable and multivariable Cox regression analyses were performed. Cell proliferation, colony formation, migration assays were conducted to investigate the function of miR-575 in vitro and in vivo. In silico target gene network analysis was performed to identify the putative targets of miR-575 in GBM, which were further verified by luciferase reporter assay, as well as qPCR and immunoblotting.RESULTS: Our clinical data (n = 254) show that miR-575 is associated with worse GBM OS by univariable analysis (UVA, HR = 1.27, p-value<0.001) and multivariable (MVA, HR = 1.23, p = 0.007) analysis incorporating critical clinical variables. Functional studies indicated that overexpression of miR-575 significantly increased cell proliferation and migration of GBM cells in vitro, as well as tumor growth in vivo. Subsequent in silico target gene network and mechanistic studies identified CDKN1B/p27 and PTEN, as potential targets of miR-575 in GBM. MicroRNA-575 can also regulate the activity of AKT and ERK pathways in GBM.CONCLUSION: miR-575 has prognostic value in GBM, with higher expression associating with worse OS of patients, and contributes to GBM tumorigenesis by regulating multiple signaling pathways in GBM.
KW - CDKN1B/p27
KW - Glioblastoma
KW - MicroRNA-575
KW - Oncogene
KW - PTEN
KW - Tumor progression
KW - Cell Movement/genetics
KW - MicroRNAs/genetics
KW - Humans
KW - Signal Transduction/genetics
KW - Proto-Oncogene Proteins c-akt/metabolism
KW - Glioblastoma/pathology
KW - Brain Neoplasms/pathology
KW - Cell Line, Tumor
KW - Biomarkers
KW - Cell Proliferation/genetics
KW - Gene Expression Regulation, Neoplastic/genetics
KW - Luciferases/genetics
KW - Oncogenes
KW - Carcinogenesis/genetics
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U2 - 10.1016/j.yexmp.2022.104813
DO - 10.1016/j.yexmp.2022.104813
M3 - Article
C2 - 35901926
AN - SCOPUS:85136502413
SN - 0014-4800
VL - 128
SP - 104813
JO - Experimental and Molecular Pathology
JF - Experimental and Molecular Pathology
M1 - 104813
ER -