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dc.contributor.authorCromme, F V
dc.contributor.authorWalboomers, J M
dc.contributor.authorGallee, M P
dc.contributor.authorStern, Peter L
dc.contributor.authorKenemans, P
dc.contributor.authorHelmerhorst, T J
dc.contributor.authorStukart, M J
dc.contributor.authorMeijer, C J
dc.date.accessioned2010-04-21T13:54:32Z
dc.date.available2010-04-21T13:54:32Z
dc.date.issued1994-06
dc.identifier.citationDifferences in MHC and TAP-1 expression in cervical cancer lymph node metastases as compared with the primary tumours. 1994, 69 (6):1176-81 Br. J. Canceren
dc.identifier.issn0007-0920
dc.identifier.pmid8198988
dc.identifier.urihttp://hdl.handle.net/10541/97078
dc.description.abstractIn previous studies we have shown down-regulation of class I major histocompatibility complex (MHC) expression in a significant proportion of primary cervical carcinomas, which was found to be strongly correlated with loss of expression of the transporter associated with antigen presentation (TAP). By contrast, class II MHC expression was frequently up-regulated on neoplastic keratinocytes in these malignancies. In order to investigate whether these changes are associated with biological behaviour of the tumours, 20 cervical carcinomas were analyzed for MHC (HLA-A, HLA-B/C, HLA-DR) and TAP-1 expression in the primary tumours and in lymph node metastases by immunohistochemistry. The results showed a significant increase in the prevalence of HLA-A and HLA-B/C down-regulation in metastasised neoplastic cells as compared with the primary tumour (P = 0.01). In all cases this was accompanied by loss of TAP-1 expression. Up-regulated HLA-DR expression was found exclusively in primary tumours and was absent in the corresponding metastases (P = 0.002). These data are consistent with the hypothesis that loss of TAP-1 and the consequent down-regulation of class I MHC expression provides a selective advantage for neoplastic cervical cells during metastasis. Furthermore, the lack of class II MHC expression in metastasised cells either reflects a different local lymphokine production or indicates that these cells may have escaped CD4+ cytotoxic T-lymphocyte (CTL)-mediated killing.
dc.language.isoenen
dc.subjectCancer Stagingen
dc.subjectUterine Cervical Canceren
dc.subject.meshATP-Binding Cassette Transporters
dc.subject.meshCarrier Proteins
dc.subject.meshFemale
dc.subject.meshHLA-A Antigens
dc.subject.meshHLA-B Antigens
dc.subject.meshHLA-C Antigens
dc.subject.meshHLA-DR Antigens
dc.subject.meshHistocompatibility Antigens Class I
dc.subject.meshHumans
dc.subject.meshImmunohistochemistry
dc.subject.meshLymph Node Excision
dc.subject.meshLymph Nodes
dc.subject.meshLymphatic Metastasis
dc.subject.meshMajor Histocompatibility Complex
dc.subject.meshNeoplasm Staging
dc.subject.meshUterine Cervical Neoplasms
dc.titleDifferences in MHC and TAP-1 expression in cervical cancer lymph node metastases as compared with the primary tumours.en
dc.typeArticleen
dc.contributor.departmentInstitute for Pathology, Free University Hospital, Amsterdam, The Netherlands.en
dc.identifier.journalBritish Journal of Canceren
html.description.abstractIn previous studies we have shown down-regulation of class I major histocompatibility complex (MHC) expression in a significant proportion of primary cervical carcinomas, which was found to be strongly correlated with loss of expression of the transporter associated with antigen presentation (TAP). By contrast, class II MHC expression was frequently up-regulated on neoplastic keratinocytes in these malignancies. In order to investigate whether these changes are associated with biological behaviour of the tumours, 20 cervical carcinomas were analyzed for MHC (HLA-A, HLA-B/C, HLA-DR) and TAP-1 expression in the primary tumours and in lymph node metastases by immunohistochemistry. The results showed a significant increase in the prevalence of HLA-A and HLA-B/C down-regulation in metastasised neoplastic cells as compared with the primary tumour (P = 0.01). In all cases this was accompanied by loss of TAP-1 expression. Up-regulated HLA-DR expression was found exclusively in primary tumours and was absent in the corresponding metastases (P = 0.002). These data are consistent with the hypothesis that loss of TAP-1 and the consequent down-regulation of class I MHC expression provides a selective advantage for neoplastic cervical cells during metastasis. Furthermore, the lack of class II MHC expression in metastasised cells either reflects a different local lymphokine production or indicates that these cells may have escaped CD4+ cytotoxic T-lymphocyte (CTL)-mediated killing.


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