Important Implication in Cancer Immunotherapy The prevalent Boxer MHC class I Dog Leukocyte Antigen (DLA)-88*034:01 preferentially binds nonamer peptides with a defined motif Important Implication in Cancer Immunotherapy Paige Nemec NCSU Ph.D. Student Department of Clinical Sciences Consortium for Canine Comparative Oncology (C3O) Symposium Durham Convention Center February 23, 2018
Tumor cells Cytotoxic T Cells T Cell Lymphoma Glioma
FLAG PN62 clone expressing FLAG-tagged DLA-88*034:01 Sequenced peptides by tandem mass spectrometry 9-mers preferred Alkaline eluted & purified peptides
Motif Discovery Anchor Anchor TCR Interaction
Tumor Antigen: B-RAF For reference, the V595 position that mutates to E in urothelial carcinomas is shown in blue. ….SIIHRDLKSNNIFLHEDLTVKIGDFGLATVKSRWSRWSGSHQFEQLSGSILWMAPEVIRMQDKNPYSFQSDVYAFGIVLYELMTGQLPYSNINNRDQIIFMVGRGYLSPDLSKVRSNCPKAMKRLMAECLKKRDERPLFPPQILASIELLARSLPKIHRSASEP… non-synonymous substitution K695I in Boxer melanoma …LATVKSRWSGSHQFEQLSGSILWMAPEVIRMQDKNPYSFQSDVYAFGIVLYELMTGQLPYSNINNRDQIIFMVGRGYLSPDLSKVRSNCPKAMKRLMAECLKKKRDERPLFPQILASIELLARSLPKIHRSASEPSLNRAGFQTEDFSLYACASPKTPIQAGGYGAFPV… …LATVKSRWSGSHQFEQLSGSILWMAPEVIRMQDKNPYSFQSDVYAFGIVLYELMTGQLPYSNINNRDQIIFMVGRGYLSPDLSKVRSNCPKAMKRLMAECLKKIRDERPLFPQILASIELLARSLPKIHRSASEPSLNRAGFQTEDFSLYACASPKTPIQAGGYGAFPV…
Acknowledgments Dr. Paul Hess Jennifer Holmes Alex Kapatos Duke University Proteomics and Metabolomics Core Facility Greg Waitt Arthur Mosley Eric Soderblom American Kennel Club Canine Health Foundation