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The brain tissue response to surgical injury and its possible contribution to glioma recurrence

Abstract : Surgery is the first line therapy for glioma. However, glioma recurs in 90 % of the patients in the resection margin. The impact of surgical brain injury (SBI) on glioma recurrence is largely overlooked. Herein, we review some of the mechanisms involved in tissue repair that may impact glioma recurrence at the resection margin. Many processes or molecules involved in tissue repair after brain injury are also critical for glioma growth. They include a wide array of secreted growth factors, cytokines and transcription factors including NFКB and STAT3 which in turn activate proliferative and anti-apoptotic genes and processes such as angiogenesis and inflammation. Because some residual glioma cells always remain in the tumor resection margin, there are now compelling arguments to suggest that some aspects of the brain tissue response to SBI can also participate to glioma recurrence at the resection margin. Brain tissue response to SBI recruits angiogenesis and inflammation that precede and then follow tumor recurrence at the resection margin. The healingresponse to SBI is double edged, as inflammation is involved in regeneration and healing, and has both pro- and anti-tumorigenic functions. A promising therapeutic approach is to normalize and re-educate the molecular and cellular responses at the resection margin to promote anti- tumorigenic processes involved in healing while inhibiting pro-tumorigenic activities. Manipulation of the inflamma- tory response to SBI to prevent local recurrence could also enhance the efficacy of other therapies such as immunotherapy. However, our current knowledge is far from sufficient to achieve this goal. Acknowledging, understanding and manipulating the double-edged role played by SBI in glioma recurrence is surely challenging, but it cannot be longer delayed.
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Submitted on : Wednesday, July 6, 2016 - 10:42:51 AM
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Lauriane Hamard1, David Ratel, Laurent Selek1, François Berger1, Boudewijn van Der Sanden1, et al.. The brain tissue response to surgical injury and its possible contribution to glioma recurrence. Journal of Neuro-Oncology, Springer Verlag, 2016, ⟨10.1007/s11060-016-2096-y⟩. ⟨inserm-01342471⟩



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