PMID- 24623841 OWN - NLM STAT- MEDLINE DCOM- 20140618 LR - 20151119 IS - 1526-632X (Electronic) IS - 0028-3878 (Linking) VI - 82 IP - 14 DP - 2014 Apr 8 TI - CTL responses to HSP47 associated with the prolonged survival of patients with glioblastomas. PG - 1261-5 LID - 10.1212/WNL.0000000000000290 [doi] AB - OBJECTIVE: To define heat shock protein 47 (HSP47) as a novel glioma-associated antigen and to preliminarily assess the association of cytotoxic T lymphocyte (CTL) responses to HSP47 with clinical outcomes in patients with glioblastomas (GBMs). METHODS: The expression of HSP47 was determined in primary GBM tissues (n = 17) and controlled brain tissues (n = 10) by Western blot. Candidate epitope peptides were predicted using the human leukocyte antigen (HLA) Peptide Binding Predictions Program. The CTL responses to HSP47 were quantified in peripheral blood mononuclear cells from 6 healthy donors and 38 patients (benign tumors = 5, astrocytoma grade II = 7, anaplastic gliomas grade III = 10, GBMs = 16) by stimulation with the mixture of the identified peptides above. Kaplan-Meier survival curves were used to analyze the association between CTL responses and clinical outcomes. RESULTS: Expression of HSP47 was hardly detectable in controlled brain tissues and increased in GBM tissues (p = 0.018). HSP47(184-192) (KLPEVTKDV) and HSP47(3-11) (LLLLSAFCL) were predicted as the most potent candidate epitope peptides with experimentally confirmed binding affinity to the HLA-A0201 molecule. Seven of 26 patients (26.9%) with malignant gliomas had positive CTL responses. Furthermore, patients with GBM with positive CTL responses to HSP47 experienced a prolonged progress-free survival time (12.6 +/- 1.3 vs 8.1 +/- 3.2 months, p = 0.01) and overall survival (13.4 +/- 1.3 vs 10.4 +/- 2.7 months, p = 0.035) than those with negative responses. CONCLUSION: Our data demonstrated that HSP47 is a novel glioma-associated antigen. HSP47-based vaccine will likely confer additional survival benefit to patients with GBM after surgical treatment. FAU - Wu, Zhe Bao AU - Wu ZB AD - From the Department of Neurosurgery (Z.B.W., Y.Y., L.F.Z.), Huashan Hospital, Fudan University, Shanghai; Department of Neurosurgery (Z.B.W., L.C., S.J.L.), First Affiliated Hospital of Wenzhou Medical University, Wenzhou; and Shanghai Public Health Clinical Center and Institutes of Biomedical Sciences (C.Q., A.L.Z., J.X.), Key Laboratory of Medical Molecular Virology of Ministry of Education/Health at Shanghai Medical College, Fudan University, Shanghai, China. FAU - Cai, Lin AU - Cai L FAU - Qiu, Chao AU - Qiu C FAU - Zhang, An Li AU - Zhang AL FAU - Lin, Shao Jian AU - Lin SJ FAU - Yao, Yu AU - Yao Y FAU - Xu, Jianqing AU - Xu J FAU - Zhou, Liang Fu AU - Zhou LF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140312 PL - United States TA - Neurology JT - Neurology JID - 0401060 RN - 0 (Antigens, Neoplasm) RN - 0 (Biomarkers, Tumor) RN - 0 (HSP47 Heat-Shock Proteins) RN - 0 (SERPINH1 protein, human) SB - IM MH - Adult MH - Aged MH - Antigens, Neoplasm/immunology/*metabolism MH - Biomarkers, Tumor/metabolism MH - Brain Neoplasms/immunology/metabolism/*mortality/pathology MH - Child MH - Female MH - Glioblastoma/immunology/*metabolism/*mortality MH - HSP47 Heat-Shock Proteins/immunology/*metabolism MH - Humans MH - Male MH - Middle Aged MH - T-Lymphocytes, Cytotoxic/immunology/*metabolism EDAT- 2014/03/14 06:00 MHDA- 2014/06/19 06:00 CRDT- 2014/03/14 06:00 PHST- 2014/03/14 06:00 [entrez] PHST- 2014/03/14 06:00 [pubmed] PHST- 2014/06/19 06:00 [medline] AID - WNL.0000000000000290 [pii] AID - 10.1212/WNL.0000000000000290 [doi] PST - ppublish SO - Neurology. 2014 Apr 8;82(14):1261-5. doi: 10.1212/WNL.0000000000000290. Epub 2014 Mar 12.