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Predominance of M2 macrophages in gliomas leads to the suppression of local and systemic immunity.

DIR@IMTECH: CSIR-Institute of Microbial Technology

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Title Predominance of M2 macrophages in gliomas leads to the suppression of local and systemic immunity.
 
Creator Vidyarthi, Aurobind
Agnihotri, Tapan
Khan, Nargis
Singh, Sanpreet
Tewari, Manoj K
Radotra, Bishan D
Chatterjee, Deepyan
Agrewala, Javed N
 
Subject QR Microbiology
 
Description Glioblastoma is a highly prevalent and aggressive form of primary brain tumor. It represents approximately 56% of all the newly diagnosed gliomas. Macrophages are one of the major constituents of tumor-infiltrating immune cells in the human gliomas. The role of immunosuppressive macrophages is very well documented in correlation with the poor prognosis of patients suffering from breast, prostate, bladder and cervical cancers. The current study highlights the correlation between the tumor-associated macrophage phenotypes and glioma progression. We observed an increase in the pool of M2 macrophages in high-grade gliomas, as confirmed by their CD68 and CD163 double-positive phenotype. In contrast, less M1 macrophages were noticed in high-grade gliomas, as evidenced by the down-regulation in the expression of CCL3 marker. In addition, we observed that higher gene expression ratio of CD163/CCL3 is associated with glioma progression. The Kaplan-Meier survival plots indicate that glioma patients with lower expression of M2c marker (CD163), and higher expression of M1 marker (CCL3) had better survival. Furthermore, we examined the systemic immune response in the peripheral blood and noted a predominance of M2 macrophages, myeloid-derived suppressor cells and PD-1 CD4 T cells in glioma patients. Thus, the study indicates a high gene expression ratio of CD163/CCL3 in high-grade gliomas as compared to low-grade gliomas and significantly elevated frequency of M2 macrophages and PD-1 CD4 T cells in the blood of tumor patients. These parameters could be used as an indicator of the early diagnosis and prognosis of the disease.
 
Publisher Springer
 
Date 2019-12
 
Type Article
PeerReviewed
 
Relation https://link.springer.com/article/10.1007%2Fs00262-019-02423-8
http://crdd.osdd.net/open/2511/
 
Identifier Vidyarthi, Aurobind and Agnihotri, Tapan and Khan, Nargis and Singh, Sanpreet and Tewari, Manoj K and Radotra, Bishan D and Chatterjee, Deepyan and Agrewala, Javed N (2019) Predominance of M2 macrophages in gliomas leads to the suppression of local and systemic immunity. Cancer immunology, immunotherapy : CII, 68 (12). pp. 1995-2004. ISSN 1432-0851