Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Keywords: brain ; CANCER ; CELLS ; ENDOTHELIAL-CELLS ; EXPRESSION ; tumor ; CELL ; Germany ; LUNG-CANCER ; SYSTEM ; DISEASE ; PROTEIN ; TISSUE ; MICE ; PATIENT ; ANTIGEN ; T-CELL ; T-CELLS ; BONE-MARROW ; MEMORY ; RECOGNITION ; MOUSE ; IDENTIFICATION ; LYMPHOMA ; EFFICACY ; MELANOMA ; MASS-SPECTROMETRY ; HEAD ; NECK ; EPITOPE ; IMMUNOTHERAPY ; IMMUNOGENICITY ; CANCER PATIENTS ; CALCIUM-BINDING PROTEINS ; TUMOR-ASSOCIATED ANTIGENS ; NECK-CANCER ; brain tumor ; head and neck cancer ; endothelial cells ; proteome ; EGFR ; SEPARATION ; EXPRESSION PROFILES ; Type ; HEAD-AND-NECK
    Abstract: Identifying the antigens that have the potential to trigger endogenous antitumor responses in an individual cancer patient is likely to enhance the efficacy of cancer immunotherapy, but current methodologies do not efficiently identify such antigens. This study describes what we believe to be a new method of comprehensively identifying candidate tissue antigens that spontaneously cause T cell responses in disease situations. We used the newly developed automated, two-dimensional chromatography system PF2D to fractionate the proteome of human tumor tissues and tested protein fractions for recognition by preexisting tumor-specific CD4(+) Th cells and CTLs. Applying this method using mice transgenic for a TCR that recognizes an OVA peptide presented by MHC class I, we demonstrated efficient separation, processing, and cross-presentation to CD8(+) T cells by DCs of OVA expressed by the OVA-transfected mouse lymphoma RMA-OVA. Applying this method to human tumor tissues, we identified MUC1 and EGFR as tumor-associated antigens selectively recognized by T cells in patients with head and neck cancer. Finally, in an exemplary patient with a malignant brain tumor, we detected CD4(+) and CD8(+) T cell responses against two novel antigens, transthyretin and calgranulin B/S100A9, which were expressed in tumor and endothelial cells. The immunogenicity of these antigens was confirmed in 4 of 10 other brain tumor patients. This fast and inexpensive method therefore appears suitable for identifying candidate T cell antigens in various disease situations, such as autoimmune and malignant diseases, without being restricted to expression by a certain cell type or HLA allele
    Type of Publication: Journal article published
    PubMed ID: 20458140
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...