Cargando…
PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA
Aberrant alternative splicing is one of the important causes of cancer. Polypyrimidine tract binding protein 1 (PTBP1) has been found to be involved in splicing regulation in a variety of tumors. Here, we observed significant up-regulation of PTBP1 in primary hepatocellular carcinoma (HCC) tissues....
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318449/ https://www.ncbi.nlm.nih.gov/pubmed/37408905 http://dx.doi.org/10.1016/j.heliyon.2023.e17387 |
_version_ | 1785068040309702656 |
---|---|
author | He, Zhentao Ni, Qianhua Li, Xichun Zhao, Mingyu Mo, Qingguo Duo, Yongsheng |
author_facet | He, Zhentao Ni, Qianhua Li, Xichun Zhao, Mingyu Mo, Qingguo Duo, Yongsheng |
author_sort | He, Zhentao |
collection | PubMed |
description | Aberrant alternative splicing is one of the important causes of cancer. Polypyrimidine tract binding protein 1 (PTBP1) has been found to be involved in splicing regulation in a variety of tumors. Here, we observed significant up-regulation of PTBP1 in primary hepatocellular carcinoma (HCC) tissues. High levels of PTBP1 expression were associated with poor prognosis and increased metastatic potential in HCC. In vitro studies demonstrated that elevated PTBP1 promoted both migration and invasion by HCC cells. In contrast, knockdown of PTBP1 significantly inhibited the migration and invasion of HCC cells in vitro. Further, up-regulation of PTBP1 markedly accumulated the expression of oncogenic isoform of NUMB, NUMB-PRR(L). We observed two isoforms of NUMB, NUMB-PRR(L) and NUMB-PRR(S) exhibit opposite function in HCC cells, which partially explain PTBP1 plays the tumor promoting roles in a NUMB splicing-dependent manner. In summary, our study indicates that PTBP1 may serve as an oncogene in HCC patients by regulating the alternative splicing of NUMB exon 9 and could potentially serve as a prognostic indicator. |
format | Online Article Text |
id | pubmed-10318449 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-103184492023-07-05 PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA He, Zhentao Ni, Qianhua Li, Xichun Zhao, Mingyu Mo, Qingguo Duo, Yongsheng Heliyon Research Article Aberrant alternative splicing is one of the important causes of cancer. Polypyrimidine tract binding protein 1 (PTBP1) has been found to be involved in splicing regulation in a variety of tumors. Here, we observed significant up-regulation of PTBP1 in primary hepatocellular carcinoma (HCC) tissues. High levels of PTBP1 expression were associated with poor prognosis and increased metastatic potential in HCC. In vitro studies demonstrated that elevated PTBP1 promoted both migration and invasion by HCC cells. In contrast, knockdown of PTBP1 significantly inhibited the migration and invasion of HCC cells in vitro. Further, up-regulation of PTBP1 markedly accumulated the expression of oncogenic isoform of NUMB, NUMB-PRR(L). We observed two isoforms of NUMB, NUMB-PRR(L) and NUMB-PRR(S) exhibit opposite function in HCC cells, which partially explain PTBP1 plays the tumor promoting roles in a NUMB splicing-dependent manner. In summary, our study indicates that PTBP1 may serve as an oncogene in HCC patients by regulating the alternative splicing of NUMB exon 9 and could potentially serve as a prognostic indicator. Elsevier 2023-06-16 /pmc/articles/PMC10318449/ /pubmed/37408905 http://dx.doi.org/10.1016/j.heliyon.2023.e17387 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article He, Zhentao Ni, Qianhua Li, Xichun Zhao, Mingyu Mo, Qingguo Duo, Yongsheng PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title | PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title_full | PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title_fullStr | PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title_full_unstemmed | PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title_short | PTBP1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in NUMB pre-mRNA |
title_sort | ptbp1 promotes hepatocellular carcinoma progression by regulating the skipping of exon 9 in numb pre-mrna |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318449/ https://www.ncbi.nlm.nih.gov/pubmed/37408905 http://dx.doi.org/10.1016/j.heliyon.2023.e17387 |
work_keys_str_mv | AT hezhentao ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna AT niqianhua ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna AT lixichun ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna AT zhaomingyu ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna AT moqingguo ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna AT duoyongsheng ptbp1promoteshepatocellularcarcinomaprogressionbyregulatingtheskippingofexon9innumbpremrna |