PMID- 23828240 OWN - NLM STAT- MEDLINE DCOM- 20140218 LR - 20220330 IS - 1523-5866 (Electronic) IS - 1522-8517 (Print) IS - 1522-8517 (Linking) VI - 15 IP - 8 DP - 2013 Aug TI - Increase in tumor-associated macrophages after antiangiogenic therapy is associated with poor survival among patients with recurrent glioblastoma. PG - 1079-87 LID - 10.1093/neuonc/not082 [doi] AB - Antiangiogenic therapy is associated with increased radiographic responses in glioblastomas, but tumors invariably recur. Because tumor-associated macrophages have been shown to mediate escape from antiangiogenic therapy in preclinical models, we examined the role of macrophages in patients with recurrent glioblastoma. We compared autopsy brain specimens from 20 patients with recurrent glioblastoma who received antiangiogenic treatment and chemoradiation with 8 patients who received chemotherapy and/or radiotherapy without antiangiogenic therapy or no treatment. Tumor-associated macrophages were morphologically and phenotypically analyzed using flow cytometry and immunohistochemistry for CD68, CD14, CD163, and CD11b expression. Flow cytometry showed an increase in macrophages in the antiangiogenic-treated patients. Immunohistochemical analysis demonstrated an increase in CD68+ macrophages in the tumor bulk (P < .01) and infiltrative areas (P = .02) in antiangiogenic-treated patients. We also observed an increase in CD11b+ cells in the tumor bulk (P < .01) and an increase in CD163+ macrophages in infiltrative tumor (P = .02). Of note, an increased number of CD11b+ cells in bulk and infiltrative tumors (P = .05 and P = .05, respectively) correlated with poor overall survival among patients who first received antiangiogenic therapy at recurrence. In summary, recurrent glioblastomas showed an increased infiltration in myeloid populations in the tumor bulk and in the infiltrative regions after antiangiogenic therapy. Higher numbers of CD11b+ cells correlated with poor survival among these patients. These data suggest that tumor-associated macrophages may participate in escape from antiangiogenic therapy and may represent a potential biomarker of resistance and a potential therapeutic target in recurrent glioblastoma. FAU - Lu-Emerson, Christine AU - Lu-Emerson C AD - Department of Neurology, Radiation Oncology, Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, MA, USA. FAU - Snuderl, Matija AU - Snuderl M FAU - Kirkpatrick, Nathaniel D AU - Kirkpatrick ND FAU - Goveia, Jermaine AU - Goveia J FAU - Davidson, Christian AU - Davidson C FAU - Huang, Yuhui AU - Huang Y FAU - Riedemann, Lars AU - Riedemann L FAU - Taylor, Jennie AU - Taylor J FAU - Ivy, Percy AU - Ivy P FAU - Duda, Dan G AU - Duda DG FAU - Ancukiewicz, Marek AU - Ancukiewicz M FAU - Plotkin, Scott R AU - Plotkin SR FAU - Chi, Andrew S AU - Chi AS FAU - Gerstner, Elizabeth R AU - Gerstner ER FAU - Eichler, April F AU - Eichler AF FAU - Dietrich, Jorg AU - Dietrich J FAU - Stemmer-Rachamimov, Anat O AU - Stemmer-Rachamimov AO FAU - Batchelor, Tracy T AU - Batchelor TT FAU - Jain, Rakesh K AU - Jain RK LA - eng GR - 8UL1TR000170-05/TR/NCATS NIH HHS/United States GR - R01CA159258/CA/NCI NIH HHS/United States GR - U01CA062490/CA/NCI NIH HHS/United States GR - P01 CA080124/CA/NCI NIH HHS/United States GR - R01CA129371/CA/NCI NIH HHS/United States GR - U01 CA154601/CA/NCI NIH HHS/United States GR - UL1 TR000170/TR/NCATS NIH HHS/United States GR - R01CA163815/CA/NCI NIH HHS/United States GR - P01CA080124/CA/NCI NIH HHS/United States GR - K12 CA090354/CA/NCI NIH HHS/United States GR - K24 CA125440/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130704 PL - England TA - Neuro Oncol JT - Neuro-oncology JID - 100887420 RN - 0 (Angiogenesis Inhibitors) RN - 0 (Antigens, CD) RN - 0 (Biomarkers, Tumor) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Angiogenesis Inhibitors/*therapeutic use MH - Antigens, CD/metabolism MH - Autopsy MH - Biomarkers, Tumor/*metabolism MH - Brain Neoplasms/drug therapy/*mortality/pathology MH - Female MH - Flow Cytometry MH - Follow-Up Studies MH - Glioblastoma/drug therapy/*mortality/pathology MH - Humans MH - Immunoenzyme Techniques MH - Macrophages/drug effects/*pathology MH - Male MH - Middle Aged MH - Neoplasm Grading MH - Neoplasm Recurrence, Local/drug therapy/*mortality/pathology MH - Prognosis MH - Survival Rate MH - Tumor Microenvironment/*drug effects MH - Young Adult PMC - PMC3714160 OTO - NOTNLM OT - antiangiogenic therapy OT - glioblastoma OT - myeloid cells OT - relapse EDAT- 2013/07/06 06:00 MHDA- 2014/02/19 06:00 PMCR- 2014/08/01 CRDT- 2013/07/06 06:00 PHST- 2013/07/06 06:00 [entrez] PHST- 2013/07/06 06:00 [pubmed] PHST- 2014/02/19 06:00 [medline] PHST- 2014/08/01 00:00 [pmc-release] AID - not082 [pii] AID - 10.1093/neuonc/not082 [doi] PST - ppublish SO - Neuro Oncol. 2013 Aug;15(8):1079-87. doi: 10.1093/neuonc/not082. Epub 2013 Jul 4.