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Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer
BACKGROUND: Family with sequence similarity 234 member B (FAM234B), a protein-coding gene, is mainly expressed in brain tissues. Its clinical significance and biological function in tumors, especially in breast cancer (BC), have not been elucidated. METHODS: We firstly investigated the expression pa...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dove
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7721111/ https://www.ncbi.nlm.nih.gov/pubmed/33299353 http://dx.doi.org/10.2147/CMAR.S280009 |
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author | Lyu, Lijuan Wang, Meng Zheng, Yi Tian, Tian Deng, Yujiao Xu, Peng Lin, Shuai Yang, Si Zhou, Linghui Hao, Qian Wu, Ying Dai, Zhijun Kang, Huafeng |
author_facet | Lyu, Lijuan Wang, Meng Zheng, Yi Tian, Tian Deng, Yujiao Xu, Peng Lin, Shuai Yang, Si Zhou, Linghui Hao, Qian Wu, Ying Dai, Zhijun Kang, Huafeng |
author_sort | Lyu, Lijuan |
collection | PubMed |
description | BACKGROUND: Family with sequence similarity 234 member B (FAM234B), a protein-coding gene, is mainly expressed in brain tissues. Its clinical significance and biological function in tumors, especially in breast cancer (BC), have not been elucidated. METHODS: We firstly investigated the expression pattern of FAM234B at the mRNA and protein levels using Oncomine, TCGA portal, GEPIA, TIMER, HPA, and UALCAN databases, then applied bc-GenExMiner to assess the associations between expression level of FAM234B and clinicopathological features of BC. Besides, we also verified the expression of FAM234B expression in clinical BC samples using qRT-PCR. Subsequently, GEPIA, bc-GenExMiner, and TIMER databases were used to analyze the prognostic significance of FAM234B in all BC and different molecular subtypes. Finally, we conducted co-expression analysis and gene set enrichment analysis (GSEA). Additionally, we explored the regulatory mechanism of FAM234B in BC. RESULTS: Both bioinformatics analysis and experimental verification confirmed that the FAM234B expression was significantly higher at the mRNA and protein levels in luminal BC tissues than in adjacent normal tissues. High FAM234B expression was significantly correlated with older age, estrogen receptor-positive, progesterone receptor-positive, human epidermal growth factor receptor 2-negative, wild-type p53, low Nottingham prognostic index, low Scarff-Bloom-Richardson grade, lymph node metastasis positivity, and high tumor stage. Moreover, survival analysis indicated that high FAM234B expression was significantly related to a worse prognosis in patients with luminal BC. GSEA indicated that FAM234B was positively related to membrane transport process and negatively associated with immune response function. Besides, mechanism exploration indicated that pseudogene HTR7P1 might act as endogenous RNA to compete with has-miR-1271-5p or has-miR-381-3p for binding to FAM234B, thereby upregulating the expression of FAM234B in luminal BC. CONCLUSION: Our results suggest that FAM234B may be a candidate therapeutic target or prognostic marker for luminal breast cancer. |
format | Online Article Text |
id | pubmed-7721111 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Dove |
record_format | MEDLINE/PubMed |
spelling | pubmed-77211112020-12-08 Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer Lyu, Lijuan Wang, Meng Zheng, Yi Tian, Tian Deng, Yujiao Xu, Peng Lin, Shuai Yang, Si Zhou, Linghui Hao, Qian Wu, Ying Dai, Zhijun Kang, Huafeng Cancer Manag Res Original Research BACKGROUND: Family with sequence similarity 234 member B (FAM234B), a protein-coding gene, is mainly expressed in brain tissues. Its clinical significance and biological function in tumors, especially in breast cancer (BC), have not been elucidated. METHODS: We firstly investigated the expression pattern of FAM234B at the mRNA and protein levels using Oncomine, TCGA portal, GEPIA, TIMER, HPA, and UALCAN databases, then applied bc-GenExMiner to assess the associations between expression level of FAM234B and clinicopathological features of BC. Besides, we also verified the expression of FAM234B expression in clinical BC samples using qRT-PCR. Subsequently, GEPIA, bc-GenExMiner, and TIMER databases were used to analyze the prognostic significance of FAM234B in all BC and different molecular subtypes. Finally, we conducted co-expression analysis and gene set enrichment analysis (GSEA). Additionally, we explored the regulatory mechanism of FAM234B in BC. RESULTS: Both bioinformatics analysis and experimental verification confirmed that the FAM234B expression was significantly higher at the mRNA and protein levels in luminal BC tissues than in adjacent normal tissues. High FAM234B expression was significantly correlated with older age, estrogen receptor-positive, progesterone receptor-positive, human epidermal growth factor receptor 2-negative, wild-type p53, low Nottingham prognostic index, low Scarff-Bloom-Richardson grade, lymph node metastasis positivity, and high tumor stage. Moreover, survival analysis indicated that high FAM234B expression was significantly related to a worse prognosis in patients with luminal BC. GSEA indicated that FAM234B was positively related to membrane transport process and negatively associated with immune response function. Besides, mechanism exploration indicated that pseudogene HTR7P1 might act as endogenous RNA to compete with has-miR-1271-5p or has-miR-381-3p for binding to FAM234B, thereby upregulating the expression of FAM234B in luminal BC. CONCLUSION: Our results suggest that FAM234B may be a candidate therapeutic target or prognostic marker for luminal breast cancer. Dove 2020-12-03 /pmc/articles/PMC7721111/ /pubmed/33299353 http://dx.doi.org/10.2147/CMAR.S280009 Text en © 2020 Lyu et al. http://creativecommons.org/licenses/by-nc/3.0/ This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php). |
spellingShingle | Original Research Lyu, Lijuan Wang, Meng Zheng, Yi Tian, Tian Deng, Yujiao Xu, Peng Lin, Shuai Yang, Si Zhou, Linghui Hao, Qian Wu, Ying Dai, Zhijun Kang, Huafeng Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title | Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title_full | Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title_fullStr | Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title_full_unstemmed | Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title_short | Overexpression of FAM234B Predicts Poor Prognosis in Patients with Luminal Breast Cancer |
title_sort | overexpression of fam234b predicts poor prognosis in patients with luminal breast cancer |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7721111/ https://www.ncbi.nlm.nih.gov/pubmed/33299353 http://dx.doi.org/10.2147/CMAR.S280009 |
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