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High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients
OBJECTIVES: To investigate the expression and prognostic value of bone sialoprotein (BSP) in glioma patients. METHODS: We determined the expression of BSP using real-time RT-PCR and immunohistochemistry in tissue microarrays containing 15 normal brain and 270 glioma samples. Cumulative survival was...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3485236/ https://www.ncbi.nlm.nih.gov/pubmed/23119009 http://dx.doi.org/10.1371/journal.pone.0048415 |
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author | Xu, Tao Qin, Rong Zhou, Jinxu Yan, Yong Lu, Yicheng Zhang, Xiaoping Fu, Da Lv, Zhongwei Li, Weiqing Xia, Chunyan Hu, Guohan Ding, Xuehua Chen, Juxiang |
author_facet | Xu, Tao Qin, Rong Zhou, Jinxu Yan, Yong Lu, Yicheng Zhang, Xiaoping Fu, Da Lv, Zhongwei Li, Weiqing Xia, Chunyan Hu, Guohan Ding, Xuehua Chen, Juxiang |
author_sort | Xu, Tao |
collection | PubMed |
description | OBJECTIVES: To investigate the expression and prognostic value of bone sialoprotein (BSP) in glioma patients. METHODS: We determined the expression of BSP using real-time RT-PCR and immunohistochemistry in tissue microarrays containing 15 normal brain and 270 glioma samples. Cumulative survival was calculated by the Kaplan-Meier method and analyzed by the log-rank test. Univariate and multivariate analyses were performed by the stepwise forward Cox regression model. RESULTS: Both BSP mRNA and protein levels were significantly elevated in high-grade glioma tissues compared with those of normal brain and low-grade glioma tissues, and BSP expression positively correlated with tumor grade (P<0.001). Univariate and multivariate analysis showed high BSP expression was an independent prognostic factor for a shorter progression-free survival (PFS) and overall survival (OS) in both grade III and grade IV glioma patients [hazard ratio (HR) = 2.549 and 3.154 for grade III glioma, and HR = 1.637 and 1.574 for grade IV glioma, respectively]. Patients with low BSP expression had a significantly longer median OS and PFS than those with high BSP expression. Small extent of resection and lineage of astrocyte served as independent risk factors of both shorter PFS and OS in grade III glioma patients; GBM patients without O(6)-methylguanine (O(6)-meG) DNA methyltransferase (MGMT) methylation and Karnofsky performance score (KPS) less than 70 points were related to poor prognosis. Lack of radiotherapy related to shorter OS but not affect PFS in both grade III and grade IV glioma patients. CONCLUSION: High BSP expression occurs in a significant subset of high-grade glioma patients and predicts a poorer outcome. The study identifies a potentially useful molecular marker for the categorization and targeted therapy of gliomas. |
format | Online Article Text |
id | pubmed-3485236 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-34852362012-11-01 High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients Xu, Tao Qin, Rong Zhou, Jinxu Yan, Yong Lu, Yicheng Zhang, Xiaoping Fu, Da Lv, Zhongwei Li, Weiqing Xia, Chunyan Hu, Guohan Ding, Xuehua Chen, Juxiang PLoS One Research Article OBJECTIVES: To investigate the expression and prognostic value of bone sialoprotein (BSP) in glioma patients. METHODS: We determined the expression of BSP using real-time RT-PCR and immunohistochemistry in tissue microarrays containing 15 normal brain and 270 glioma samples. Cumulative survival was calculated by the Kaplan-Meier method and analyzed by the log-rank test. Univariate and multivariate analyses were performed by the stepwise forward Cox regression model. RESULTS: Both BSP mRNA and protein levels were significantly elevated in high-grade glioma tissues compared with those of normal brain and low-grade glioma tissues, and BSP expression positively correlated with tumor grade (P<0.001). Univariate and multivariate analysis showed high BSP expression was an independent prognostic factor for a shorter progression-free survival (PFS) and overall survival (OS) in both grade III and grade IV glioma patients [hazard ratio (HR) = 2.549 and 3.154 for grade III glioma, and HR = 1.637 and 1.574 for grade IV glioma, respectively]. Patients with low BSP expression had a significantly longer median OS and PFS than those with high BSP expression. Small extent of resection and lineage of astrocyte served as independent risk factors of both shorter PFS and OS in grade III glioma patients; GBM patients without O(6)-methylguanine (O(6)-meG) DNA methyltransferase (MGMT) methylation and Karnofsky performance score (KPS) less than 70 points were related to poor prognosis. Lack of radiotherapy related to shorter OS but not affect PFS in both grade III and grade IV glioma patients. CONCLUSION: High BSP expression occurs in a significant subset of high-grade glioma patients and predicts a poorer outcome. The study identifies a potentially useful molecular marker for the categorization and targeted therapy of gliomas. Public Library of Science 2012-10-31 /pmc/articles/PMC3485236/ /pubmed/23119009 http://dx.doi.org/10.1371/journal.pone.0048415 Text en © 2012 Xu et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Xu, Tao Qin, Rong Zhou, Jinxu Yan, Yong Lu, Yicheng Zhang, Xiaoping Fu, Da Lv, Zhongwei Li, Weiqing Xia, Chunyan Hu, Guohan Ding, Xuehua Chen, Juxiang High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title | High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title_full | High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title_fullStr | High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title_full_unstemmed | High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title_short | High Bone Sialoprotein (BSP) Expression Correlates with Increased Tumor Grade and Predicts a Poorer Prognosis of High-Grade Glioma Patients |
title_sort | high bone sialoprotein (bsp) expression correlates with increased tumor grade and predicts a poorer prognosis of high-grade glioma patients |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3485236/ https://www.ncbi.nlm.nih.gov/pubmed/23119009 http://dx.doi.org/10.1371/journal.pone.0048415 |
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