PMID- 27840923 OWN - NLM STAT- MEDLINE DCOM- 20170407 LR - 20181202 IS - 1791-3004 (Electronic) IS - 1791-2997 (Print) IS - 1791-2997 (Linking) VI - 14 IP - 6 DP - 2016 Dec TI - Identification of HLA‑A*1101‑restricted cytotoxic T lymphocyte epitopes derived from epidermal growth factor pathway substrate number 8. PG - 4999-5006 LID - 10.3892/mmr.2016.5888 [doi] AB - Epidermal growth factor receptor pathway substrate 8 (EPS8) is critical in the proliferation, progression and metastasis of solid and hematological types of cancer, and thus constitutes an ideal target for cancer immunotherapy. The present study aimed to identify human leukocyte antigen (HLA)‑A*1101‑restricted cytotoxic T lymphocyte (CTL) epitopes from EPS8 and characterize their immunotherapeutic efficacy in vitro. Two computer‑based algorithms were used to predict native EPS8 epitopes with potential high binding affinity to the HLA‑A*1101 molecule, which is the HLA‑A allele with the highest frequency in the Chinese population. The peptide‑induced cytokine production from the CTLs was examined using enzyme‑linked immunosorbent spot analysis. The cytotoxic effects on cancer cells by CTLs primed with the identified peptides were examined using flow cytometry. A total of five peptides, designated as P380, P70, P82, P30 and P529, presented with high affinity towards the HLA‑A*1101 molecule. In response to stimulation by these five peptides, enhanced secretion of interferon‑gamma from the CTLs and increased cytolytic capabilities of the CTLs toward cancer cells were noted, with the most potent effects observed from the P380 peptide. Taken together, the present study identified five potential CTL epitopes from EPS8. Among these, P380 presented with the highest therapeutic efficacy in vitro. These peptides may benefit the development of EPS8‑based immunotherapy for the treatment of HLA‑A*1101‑positive hematological malignancies. FAU - Lu, Huifang AU - Lu H AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. FAU - Tang, Baishan AU - Tang B AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. FAU - He, Yanjie AU - He Y AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. FAU - Zhou, Weijun AU - Zhou W AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. FAU - Qiu, Jielei AU - Qiu J AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. FAU - Li, Yuhua AU - Li Y AD - Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China. LA - eng PT - Journal Article DEP - 20161025 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (EPS8 protein, human) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (HLA-A Antigens) RN - 0 (Peptides) RN - 0 (RNA, Small Interfering) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Adaptor Proteins, Signal Transducing/chemistry/*immunology/metabolism MH - Cell Line, Tumor MH - Cytotoxicity, Immunologic MH - Epitope Mapping MH - Epitopes, T-Lymphocyte/*immunology MH - HLA-A Antigens/*immunology/metabolism MH - Humans MH - Interferon-gamma/metabolism MH - K562 Cells MH - Peptides/chemistry/immunology/metabolism MH - Phenotype MH - Protein Binding MH - RNA, Small Interfering/genetics MH - T-Lymphocytes, Cytotoxic/*immunology/metabolism PMC - PMC5355652 EDAT- 2016/11/15 06:00 MHDA- 2017/04/08 06:00 PMCR- 2016/10/25 CRDT- 2016/11/15 06:00 PHST- 2015/08/30 00:00 [received] PHST- 2016/09/12 00:00 [accepted] PHST- 2016/11/15 06:00 [pubmed] PHST- 2017/04/08 06:00 [medline] PHST- 2016/11/15 06:00 [entrez] PHST- 2016/10/25 00:00 [pmc-release] AID - mmr-14-06-4999 [pii] AID - 10.3892/mmr.2016.5888 [doi] PST - ppublish SO - Mol Med Rep. 2016 Dec;14(6):4999-5006. doi: 10.3892/mmr.2016.5888. Epub 2016 Oct 25.