{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T16:09:09Z","timestamp":1790784549526,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2019,5,7]],"date-time":"2019-05-07T00:00:00Z","timestamp":1557187200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cancer Medicine"],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Exosomes have emerged as novel vehicles for proteins and other contents in cancer progression. Cyclophilin A (CYPA) is a pivotal member of immunophilin family. Whether CYPA can be detected in sera of nasopharyngeal carcinoma (NPC) patients remains to be explored. Epstein\u2010Barr virus (EBV) is the first identified human tumor virus and is a causative agent of NPC. The antibody of EBV capsid antigen immunoglobulin A (EBV\u2010VCA\u2010IgA) is a known biomarker of NPC, with a proportion of no more than 70% being detected positively. Hence, novel biomarkers need to be discovered for early diagnosis, prognosis, and monitoring of EBV\u2010associated NPC. A total of 110 NPC and 36 normal control serum samples were collected. Exosomes from these samples were extracted. The mRNA and protein expression levels of the above samples were validated by reverse transcription \u2013quantitative polymerase chain reaction, Western blotting, or enzyme\u2010linked immunosorbent assay (ELISA). Finally, the results demonstrated that both the serum and exosomal CYPA levels of NPC patients were significantly higher than that of normal cases. In addition, exosomal CYPA had a much higher level than that in the whole sera. The positive rate of EBV\u2010VCA\u2010IgA antibody was 68.2% in NPC sera, and noticeably, among the cases with EBV\u2010VCA\u2010IgA negative, 80% of them presented high levels of CYPA above the standard (cutoff value). In particular, CYPA in exosomes was uniformly with higher significance than that in whole sera. Combined analysis of CYPA protein and EBV\u2010VCA\u2010IgA antibody showed a greatly higher discriminatory ability in diagnosis of NPC. Moreover, exosomal CYPA level had a positive correlation with that of the EBV\u2010encoded latent membrane protein 1 (LMP1) in exosomes. EBV\u2010positive cancer cells secreted significantly higher levels of exosomal CYPA. This study established the utility of circulating exosomal CYPA as a potential noninvasive diagnostic biomarker for EBV\u2010associated NPC.<\/jats:p>","DOI":"10.1002\/cam4.2185","type":"journal-article","created":{"date-parts":[[2019,5,7]],"date-time":"2019-05-07T17:43:16Z","timestamp":1557250996000},"page":"3142-3151","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein\u2010Barr virus associated nasopharyngeal carcinoma"],"prefix":"10.1002","volume":"8","author":[{"given":"Lingzhi","family":"Liu","sequence":"first","affiliation":[{"name":"NHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha China"},{"name":"Department of Microbiology, Cancer Research Institute School of Basic Medical Science, Central South University Changsha 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Hospital, Central South University Changsha China"},{"name":"Department of Microbiology, Cancer Research Institute School of Basic Medical Science, Central South University Changsha China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Zhang","sequence":"additional","affiliation":[{"name":"NHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha China"},{"name":"Department of Microbiology, Cancer Research Institute School of Basic Medical Science, Central South University Changsha China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianhua","family":"Zhou","sequence":"additional","affiliation":[{"name":"NHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guiyuan","family":"Li","sequence":"additional","affiliation":[{"name":"NHC Key Laboratory of 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