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Põlajeva J, Bergström T, Edqvist PH, Lundequist A, Sjösten A, Nilsson G, Smits A, Bergqvist M, Pontén F, Westermark B, Pejler G, Forsberg Nilsson K, Tchougounova E. Glioma-derived macrophage migration inhibitory factor (MIF) promotes mast cell recruitment in a STAT5-dependent manner. Mol Oncol 2013; 8:50-8. [PMID: 24091309 DOI: 10.1016/j.molonc.2013.09.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 08/27/2013] [Accepted: 09/09/2013] [Indexed: 11/15/2022] Open
Abstract
Recently, glioma research has increased its focus on the diverse types of cells present in brain tumors. We observed previously that gliomas are associated with a profound accumulation of mast cells (MCs) and here we investigate the underlying mechanism. Gliomas express a plethora of chemoattractants. First, we demonstrated pronounced migration of human MCs toward conditioned medium from cultures of glioma cell lines. Subsequent cytokine array analyses of media from cells, cultured in either serum-containing or -free conditions, revealed a number of candidates which were secreted in high amounts in both cell lines. Among these, we then focused on macrophage migration inhibitory factor (MIF), which has been reported to be pro-inflammatory and -tumorigenic. Infiltration of MCs was attenuated by antibodies that neutralized MIF. Moreover, a positive correlation between the number of MCs and the level of MIF in a large cohort of human glioma tissue samples was observed. Further, both glioma-conditioned media and purified MIF promoted differential phosphorylation of a number of signaling molecules, including signal transducer and activator of transcription 5 (STAT5), in MCs. Inhibition of pSTAT5 signaling significantly attenuated the migration of MCs toward glioma cell-conditioned medium shown to contain MIF. In addition, analysis of tissue microarrays (TMAs) of high-grade gliomas revealed a direct correlation between the level of pSTAT5 in MCs and the level of MIF in the medium. In conclusion, these findings indicate the important influence of signaling cascades involving MIF and STAT5 on the recruitment of MCs to gliomas.
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Affiliation(s)
- Jelena Põlajeva
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Tobias Bergström
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Per-Henrik Edqvist
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Anders Lundequist
- Swedish University of Agricultural Sciences, Department of Anatomy, Physiology and Biochemistry, BMC, Box 575, SE-751 23 Uppsala, Sweden.
| | - Anna Sjösten
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden
| | - Gunnar Nilsson
- Karolinska Institutet, Department of Medicine, Karolinska University Hospital Solna, SE-171 76 Stockholm, Sweden.
| | - Anja Smits
- Uppsala University Hospital, Department of Neuroscience, Neurology, SE-751 85 Uppsala, Sweden.
| | - Michael Bergqvist
- Uppsala University Hospital, Department of Neuroscience, Neurology, SE-751 85 Uppsala, Sweden.
| | - Fredrik Pontén
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Bengt Westermark
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Gunnar Pejler
- Swedish University of Agricultural Sciences, Department of Anatomy, Physiology and Biochemistry, BMC, Box 575, SE-751 23 Uppsala, Sweden.
| | - Karin Forsberg Nilsson
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
| | - Elena Tchougounova
- Uppsala University, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, SE-751 85 Uppsala, Sweden.
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