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An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16
PURPOSE: Among children, glioblastomas (GBMs) are a relatively common type of brain tumor. BRD4 expression was elevated in GBM and negatively correlated with the prognosis of glioma. We investigated the anti-GBM effects of a novel BRD4 inhibitor GNE987. METHODS: We evaluated the anti-tumor effect of...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9637061/ https://www.ncbi.nlm.nih.gov/pubmed/36224471 http://dx.doi.org/10.1007/s00280-022-04483-7 |
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author | Ma, Liya Li, Gen Yang, Tianquan Zhang, Li Wang, Xinxin Xu, Xiaowen Ni, Hong |
author_facet | Ma, Liya Li, Gen Yang, Tianquan Zhang, Li Wang, Xinxin Xu, Xiaowen Ni, Hong |
author_sort | Ma, Liya |
collection | PubMed |
description | PURPOSE: Among children, glioblastomas (GBMs) are a relatively common type of brain tumor. BRD4 expression was elevated in GBM and negatively correlated with the prognosis of glioma. We investigated the anti-GBM effects of a novel BRD4 inhibitor GNE987. METHODS: We evaluated the anti-tumor effect of GNE987 in vitro and in vivo by Western blot, CCK8, flow cytometry detection, clone formation, the size of xenografts, and Ki67 immunohistochemical staining, and combined ChIP-seq with RNA-seq techniques to find its anti-tumor mechanism. RESULTS: In vitro experiments showed that GNE987 significantly degraded BRD4, inhibited the proliferation of GBM cells, blocked the cell cycle, and induced apoptosis. Similarly, in vivo experiments, GNE987 also inhibited GBM growth as seen from the size of xenografts and Ki67 immunohistochemical staining. Based on Western blotting, GNE987 can significantly reduce the protein level of C-Myc; meanwhile, we combined ChIP-seq with RNA-seq techniques to confirm that GNE987 downregulated the transcription of S100A16 by disturbing H3K27Ac. Furthermore, we validated that S100A16 is indispensable in GBM growth. CONCLUSION: GNE987 may be effective against GBM that targets C-Myc expression and influences S100A16 transcription through downregulation of BRD4. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00280-022-04483-7. |
format | Online Article Text |
id | pubmed-9637061 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-96370612022-11-07 An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 Ma, Liya Li, Gen Yang, Tianquan Zhang, Li Wang, Xinxin Xu, Xiaowen Ni, Hong Cancer Chemother Pharmacol Original Article PURPOSE: Among children, glioblastomas (GBMs) are a relatively common type of brain tumor. BRD4 expression was elevated in GBM and negatively correlated with the prognosis of glioma. We investigated the anti-GBM effects of a novel BRD4 inhibitor GNE987. METHODS: We evaluated the anti-tumor effect of GNE987 in vitro and in vivo by Western blot, CCK8, flow cytometry detection, clone formation, the size of xenografts, and Ki67 immunohistochemical staining, and combined ChIP-seq with RNA-seq techniques to find its anti-tumor mechanism. RESULTS: In vitro experiments showed that GNE987 significantly degraded BRD4, inhibited the proliferation of GBM cells, blocked the cell cycle, and induced apoptosis. Similarly, in vivo experiments, GNE987 also inhibited GBM growth as seen from the size of xenografts and Ki67 immunohistochemical staining. Based on Western blotting, GNE987 can significantly reduce the protein level of C-Myc; meanwhile, we combined ChIP-seq with RNA-seq techniques to confirm that GNE987 downregulated the transcription of S100A16 by disturbing H3K27Ac. Furthermore, we validated that S100A16 is indispensable in GBM growth. CONCLUSION: GNE987 may be effective against GBM that targets C-Myc expression and influences S100A16 transcription through downregulation of BRD4. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00280-022-04483-7. Springer Berlin Heidelberg 2022-10-12 2022 /pmc/articles/PMC9637061/ /pubmed/36224471 http://dx.doi.org/10.1007/s00280-022-04483-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Original Article Ma, Liya Li, Gen Yang, Tianquan Zhang, Li Wang, Xinxin Xu, Xiaowen Ni, Hong An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title | An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title_full | An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title_fullStr | An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title_full_unstemmed | An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title_short | An inhibitor of BRD4, GNE987, inhibits the growth of glioblastoma cells by targeting C-Myc and S100A16 |
title_sort | inhibitor of brd4, gne987, inhibits the growth of glioblastoma cells by targeting c-myc and s100a16 |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9637061/ https://www.ncbi.nlm.nih.gov/pubmed/36224471 http://dx.doi.org/10.1007/s00280-022-04483-7 |
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