Increased radiation-associated T-cell infiltration in recurrent IDH-mutant glioma
Most gliomas are associated with a fatal prognosis and remain incurable because of their infiltrative growth. Consequently, the addition of immunotherapy to conventional therapy may improve patient outcomes. Here, we analyzed T-cell infiltration and, therefore, a major prerequisite for successful im...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
21 October 2020
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| In: |
International journal of molecular sciences
Year: 2020, Volume: 21, Issue: 20 |
| ISSN: | 1422-0067 |
| DOI: | 10.3390/ijms21207801 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/ijms21207801 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/1422-0067/21/20/7801 
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| Author Notes: | Anastasia Makarevic, Carmen Rapp, Steffen Dettling, David Reuss, Christine Jungk, Amir Abdollahi, Andreas von Deimling, Andreas Unterberg, Christel Herold-Mende and Rolf Warta |
| Summary: | Most gliomas are associated with a fatal prognosis and remain incurable because of their infiltrative growth. Consequently, the addition of immunotherapy to conventional therapy may improve patient outcomes. Here, we analyzed T-cell infiltration and, therefore, a major prerequisite for successful immunotherapy in a series of primary (n = 78) and recurrent (n = 66) isocitrate dehydrogenase (IDH)-mutant glioma and their changes following treatment with radio- and/or chemotherapy. After multicolor immunofluorescence staining, T cells were counted in entire tumor sections using a software-based setup. Newly diagnosed diffuse IDH-mutant gliomas displayed a median T-cell infiltration of 0.99 T cells/mm2 (range: 0–48.97 CD3+ T cells/mm2), which was about two-fold increased for CD3+, helper, and cytotoxic T cells in recurrent glioma. Furthermore, T-cell infiltration of recurrent tumors was associated with the type of adjuvant treatment of the primary tumor. Interestingly, only glioma patients solely receiving radiotherapy presented consistently with increased T-cell infiltration in their recurrent tumors. This was confirmed in a subset of 27 matched pairs. In conclusion, differences in the T-cell infiltration of primary and recurrent gliomas were demonstrated, and evidence was provided for a beneficial long-term effect on T-cell infiltration upon treatment with radiotherapy. |
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| Item Description: | Gesehen am 25.11.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1422-0067 |
| DOI: | 10.3390/ijms21207801 |