Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma
Abstract 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‐Barr virus (EBV) is...
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doaj-3046dd5dcdcd47a69385c675e759a9802020-11-24T22:04:14ZengWileyCancer Medicine2045-76342019-06-01863142315110.1002/cam4.2185Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinomaLingzhi Liu0Lielian Zuo1Jing Yang2Shuyu Xin3Jing Zhang4Jianhua Zhou5Guiyuan Li6Jinyong Tang7Jianhong Lu8NHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaDepartment of Otolaryngology‐Head and Neck Surgery The First People's Hospital of Chenzhou Hunan ChinaNHC Key Laboratory of Carcinogenesis, Department of Pathology Xiangya Hospital, Central South University Changsha ChinaAbstract 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‐Barr 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‐VCA‐IgA) 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‐associated 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 –quantitative polymerase chain reaction, Western blotting, or enzyme‐linked 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‐VCA‐IgA antibody was 68.2% in NPC sera, and noticeably, among the cases with EBV‐VCA‐IgA 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‐VCA‐IgA antibody showed a greatly higher discriminatory ability in diagnosis of NPC. Moreover, exosomal CYPA level had a positive correlation with that of the EBV‐encoded latent membrane protein 1 (LMP1) in exosomes. EBV‐positive 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‐associated NPC.https://doi.org/10.1002/cam4.2185Cyclophilin AEBV‐VCA‐IgAEpstein‐Barr virusexosomesnasopharyngeal carcinoma |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lingzhi Liu Lielian Zuo Jing Yang Shuyu Xin Jing Zhang Jianhua Zhou Guiyuan Li Jinyong Tang Jianhong Lu |
spellingShingle |
Lingzhi Liu Lielian Zuo Jing Yang Shuyu Xin Jing Zhang Jianhua Zhou Guiyuan Li Jinyong Tang Jianhong Lu Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma Cancer Medicine Cyclophilin A EBV‐VCA‐IgA Epstein‐Barr virus exosomes nasopharyngeal carcinoma |
author_facet |
Lingzhi Liu Lielian Zuo Jing Yang Shuyu Xin Jing Zhang Jianhua Zhou Guiyuan Li Jinyong Tang Jianhong Lu |
author_sort |
Lingzhi Liu |
title |
Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma |
title_short |
Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma |
title_full |
Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma |
title_fullStr |
Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma |
title_full_unstemmed |
Exosomal cyclophilin A as a novel noninvasive biomarker for Epstein‐Barr virus associated nasopharyngeal carcinoma |
title_sort |
exosomal cyclophilin a as a novel noninvasive biomarker for epstein‐barr virus associated nasopharyngeal carcinoma |
publisher |
Wiley |
series |
Cancer Medicine |
issn |
2045-7634 |
publishDate |
2019-06-01 |
description |
Abstract 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‐Barr 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‐VCA‐IgA) 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‐associated 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 –quantitative polymerase chain reaction, Western blotting, or enzyme‐linked 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‐VCA‐IgA antibody was 68.2% in NPC sera, and noticeably, among the cases with EBV‐VCA‐IgA 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‐VCA‐IgA antibody showed a greatly higher discriminatory ability in diagnosis of NPC. Moreover, exosomal CYPA level had a positive correlation with that of the EBV‐encoded latent membrane protein 1 (LMP1) in exosomes. EBV‐positive 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‐associated NPC. |
topic |
Cyclophilin A EBV‐VCA‐IgA Epstein‐Barr virus exosomes nasopharyngeal carcinoma |
url |
https://doi.org/10.1002/cam4.2185 |
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