PMID- 28894200 OWN - NLM STAT- MEDLINE DCOM- 20190613 LR - 20190613 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 IP - 1 DP - 2017 Sep 11 TI - Soluble HLA-associated peptide from PSF1 has a cancer vaccine potency. PG - 11137 LID - 10.1038/s41598-017-11605-2 [doi] LID - 11137 AB - Partner of sld five 1 (PSF1) is an evolutionary conserved DNA replication factor involved in DNA replication in lower species, which is strongly expressed in normal stem cell populations and progenitor cell populations. Recently, we have investigated PSF1 functions in cancer cells and found that PSF1 plays a significant role in tumour growth. These findings provide initial evidence for the potential of PSF1 as a therapeutic target. Here, we reveal that PSF1 contains an immunogenic epitope suitable for an antitumour vaccine. We analysed PSF1 peptides eluted from affinity-purified human leukocyte antigen (HLA) by mass spectrometry and identified PSF1(79-87) peptide (YLYDRLLRI) that has the highest prediction score using an in silico algorithm. PSF1(79-87) peptide induced PSF1-specific cytotoxic T lymphocyte responses such as the production of interferon-gamma and cytotoxicity. Because PSF1 is expressed in cancer cell populations and highly expressed in cancer stem cell populations, these data suggest that vaccination with PSF1(79-87) peptide may be a novel therapeutic strategy for cancer treatment. FAU - Yoshida, Mari AU - Yoshida M AD - Biomarker R&D Department, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. AD - Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Osaka, 561-0825, Japan. FAU - Ishioka, Yukichi AU - Ishioka Y AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Ozawa, Takamasa AU - Ozawa T AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Okuyama, Hirohisa AU - Okuyama H AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Iguchi, Motofumi AU - Iguchi M AD - Medical Affairs Department, Shionogi & Co., Ltd, Osaka, 530-0012, Japan. FAU - Ota, Takeshi AU - Ota T AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Ito, Takaomi AU - Ito T AD - Shionogi TechnoAdvance Research Co., Ltd, Osaka, 561-0825, Japan. FAU - Nagira, Morio AU - Nagira M AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Morita, Atsushi AU - Morita A AD - Biomarker R&D Department, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Tanaka, Hidekazu AU - Tanaka H AD - Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd, Osaka, 561-0825, Japan. FAU - Naito, Hisamichi AU - Naito H AD - Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Osaka, 561-0825, Japan. FAU - Kidoya, Hiroyasu AU - Kidoya H AD - Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Osaka, 561-0825, Japan. FAU - Takakura, Nobuyuki AU - Takakura N AD - Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Osaka, 561-0825, Japan. ntakaku@biken.osaka-u.ac.jp. LA - eng PT - Journal Article DEP - 20170911 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (ATP Binding Cassette Transporter, Subfamily B, Member 2) RN - 0 (Cancer Vaccines) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Peptides) RN - 0 (TAP1 protein, human) SB - IM MH - ATP Binding Cassette Transporter, Subfamily B, Member 2/chemistry/*immunology MH - Animals MH - Antigen Presentation MH - Cancer Vaccines/*immunology MH - Cell Line, Tumor MH - Chromatography, Liquid MH - Cytotoxicity, Immunologic MH - Disease Models, Animal MH - Epitopes, T-Lymphocyte/chemistry/immunology MH - Female MH - HLA Antigens/*immunology MH - Histocompatibility Antigens Class I/immunology MH - Humans MH - Immunogenicity, Vaccine MH - Mice MH - Neoplasms/immunology MH - Peptides/blood/*immunology MH - T-Lymphocytes, Cytotoxic/immunology/metabolism MH - Tandem Mass Spectrometry PMC - PMC5593935 COIS- The authors declare that they have no competing interests. EDAT- 2017/09/13 06:00 MHDA- 2019/06/14 06:00 PMCR- 2017/09/11 CRDT- 2017/09/13 06:00 PHST- 2017/05/19 00:00 [received] PHST- 2017/08/25 00:00 [accepted] PHST- 2017/09/13 06:00 [entrez] PHST- 2017/09/13 06:00 [pubmed] PHST- 2019/06/14 06:00 [medline] PHST- 2017/09/11 00:00 [pmc-release] AID - 10.1038/s41598-017-11605-2 [pii] AID - 11605 [pii] AID - 10.1038/s41598-017-11605-2 [doi] PST - epublish SO - Sci Rep. 2017 Sep 11;7(1):11137. doi: 10.1038/s41598-017-11605-2.