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Association of immunoescape mechanisms with Epstein‐Barr virus infection in nasopharyngeal carcinoma
International journal of cancer, 2007-06, Vol.120 (11), p.2401-2410
Ogino, Takeshi
Moriai, Shigetaka
Ishida, Yoshiya
Ishii, Hideyuki
Katayama, Akihiro
Miyokawa, Naoyuki
Harabuchi, Yasuaki
Ferrone, Soldano
2007
Volltextzugriff (PDF)
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Autor(en) / Beteiligte
Ogino, Takeshi
Moriai, Shigetaka
Ishida, Yoshiya
Ishii, Hideyuki
Katayama, Akihiro
Miyokawa, Naoyuki
Harabuchi, Yasuaki
Ferrone, Soldano
Titel
Association of immunoescape mechanisms with Epstein‐Barr virus infection in nasopharyngeal carcinoma
Ist Teil von
International journal of cancer, 2007-06, Vol.120 (11), p.2401-2410
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2007
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
We have investigated the association of immunoescape mechanisms in nasopharyngeal carcinoma (NPC) lesions with Epstein‐Barr virus (EBV) infection and clinical course of the disease. Tumor biopsy specimens obtained from 36 Japanese NPC patients were examined for antigen processing machinery component and HLA class I antigen expression, CD8+ T cell infiltration, and Fas, Fas ligand (FasL) and IL‐10 expression using immunohistochemical staining. The results were correlated with the histopathological characteristics of the lesions, the clinical course of the disease and EBV infection. LMP2, TAP1, tapasin and HLA class I antigens were downregulated in more than 65% of the lesions tested, while FasL, Fas and IL‐10 were expressed in at least 60% of the lesions. Statistical analysis showed that (i) HLA class I antigen expression was significantly correlated with LMP2 and tapasin expression (r = 0.39 and 0.45, respectively); (ii) CD8+ T cell infiltration into tumor lesions was significantly correlated with HLA class I antigen, LMP2 and Fas expression (r = 0.34, 0.49 and 0.44, respectively); (iii) LMP2 and FasL expression was significantly correlated with IL‐10 expression (r = 0.49 and 0.52, respectively); (iv) IL‐10 expression was significantly associated with EBERs and EBV oncoprotein LMP1 expression (p = 0.00078 and 0.015, respectively) and (v) FasL overexpression was significantly associated with reduced patients' survival (p = 0.033). Multivariate analysis identified FasL overexpression as an independent unfavorable prognostic marker. These results suggest that NPC cells may utilize multiple immunoescape mechanisms, including dysfunction of HLA class I antigens and Fas/FasL apoptosis pathways. Furthermore, FasL expression appears to be associated with IL‐10 upregulation in EBV positive NPC cells. © 2007 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0020-7136
eISSN: 1097-0215
DOI: 10.1002/ijc.22334
Titel-ID: cdi_proquest_miscellaneous_70351262
Format
–
Schlagworte
Adolescent
,
Adult
,
Aged
,
Aged, 80 and over
,
Biological and medical sciences
,
CD8-Positive T-Lymphocytes - immunology
,
Epstein-Barr virus
,
Fas Ligand Protein - immunology
,
fas Receptor - immunology
,
FasL
,
Female
,
Herpesvirus 4, Human - isolation & purification
,
Histocompatibility Antigens Class I - immunology
,
HLA class I antigen
,
Humans
,
IL‐10
,
Immunohistochemistry
,
Interleukin-10 - immunology
,
Male
,
Medical sciences
,
Middle Aged
,
nasopharyngeal carcinoma
,
Nasopharyngeal Neoplasms - immunology
,
Nasopharyngeal Neoplasms - virology
,
Otorhinolaryngology. Stomatology
,
RNA, Messenger - genetics
,
Tumors
,
Upper respiratory tract, upper alimentary tract, paranasal sinuses, salivary glands: diseases, semeiology
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