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Kranz, David M. Manning, Thomas Crellin 2015-09-25T22:28:23Z 2015-09-25T22:28:23Z 10000-01-01 1998 1998 In chapter two, the ability of CTL 2C to recognize thiol-modified peptide variants is analyzed. A method for the synthesis and screening of thiol-modified peptides that are recognized by T cells is presented. Chapter three continues the peptide variant approach with examination of the ability of clone 2C and its receptor to recognize altered peptide ligands involving amino acid substitutions in the center of the alloantigenic peptide. In chapter four, the energy of antigen recognition is mapped using soluble 2C TCR and the alanine-scanning mutagenesis technique. A majority of the binding energy for alloantigen recognition is derived from residues within the CDR 1 and 2 regions of the 2C TCR. Additional TCR mutants are analyzed in chapter five, including several which improve the affinity of the TCR for pMHC. Finally, in chapter six we have examined the ability of 2C TCR transgenic mice on a RAG knockout background to recognize and eliminate tumors bearing the L$\sp{\rm d}$ alloantigen. We show that tumor rejection in this system occurs independent of both B7 costimulatory molecules and CD4$\sp{+}$ helper T cells. Made available in DSpace on 2015-09-25T22:28:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9904535.pdf: 8427468 bytes, checksum: 2e5a81405ee7abb8bc98b68478c81bf6 (MD5) Previous issue date: 1998 Embargo set by: Seth Robbins for item 86174 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 176 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998. http://hdl.handle.net/2142/84893 (MiAaPQ)AAI9904535 eng Health Sciences, Oncology Antigen Recognition by an Alloreactive T Lymphocyte Clone text Biochemistry Biochemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.