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Oncotarget. 2017 Apr 11;8(15):24815-24827. doi: 10.18632/oncotarget.15820.

Serglycin as a potential biomarker for glioma: association of serglycin expression, extent of mast cell recruitment and glioblastoma progression.

Author information

1
Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden.
2
Swedish University of Agricultural Sciences, Department of Biomedical Sciences and Veterinary Public Health, Uppsala, Sweden.
3
Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
4
Umeå University, Department of Radiation Sciences, Umeå, Sweden.
5
Cardiff University School of Biosciences, European Cancer Stem Cell Research Institute, Cardiff, United Kingdom.
6
Uppsala University, Department of Neuroscience, Neurology, Uppsala, Sweden.
7
Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.

Abstract

Serglycin is an intracellular proteoglycan with a unique ability to adopt highly divergent structures by glycosylation with variable types of glycosaminoglycans (GAGs) when expressed by different cell types. Serglycin is overexpressed in aggressive cancers suggesting its protumorigenic role. In this study, we explored the expression of serglycin in human glioma and its correlation with survival and immune cell infiltration. We demonstrate that serglycin is expressed in glioma and that increased expression predicts poor survival of patients. Analysis of serglycin expression in a large cohort of low- and high-grade human glioma samples reveals that its expression is grade dependent and is positively correlated with mast cell (MC) infiltration. Moreover, serglycin expression in patient-derived glioma cells is significantly increased upon MC co-culture. This is also accompanied by increased expression of CXCL12, CXCL10, as well as markers of cancer progression, including CD44, ZEB1 and vimentin.In conclusion, these findings indicate the importance of infiltrating MCs in glioma by modulating signaling cascades involving serglycin, CD44 and ZEB1. The present investigation reveals serglycin as a potential prognostic marker for glioma and demonstrates an association with the extent of MC recruitment and glioma progression, uncovering potential future therapeutic opportunities for patients.

KEYWORDS:

CD44; ZEB1; glioma; mast cell; serglycin

PMID:
28445977
PMCID:
PMC5421891
DOI:
10.18632/oncotarget.15820
[Indexed for MEDLINE]
Free PMC Article

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