Abstract:
:New, potentially tumor-specific antigens have been described in Bcr/Abl positive leukemias. Besides the main BCR/ABL hybrid fusion transcripts, a small number of transcripts derived from alternative splicing between BCR exons 1, 13, and 14 with ABL exons 4 and 5 have been identified. These variants are expressed in chronic myelogenous leukemia and acute lymphocytic leukemia patients. The transcriptional products were characterized at their C-terminus by a large amino acid portion derived from out of frame (OOF) reading of the ABL gene. This OOF peptide is expressed only in leukemic cells and has no homology with known human proteins. In order to study an in vivo model, three 39-amino acid peptides, each corresponding to a third of the whole human OOF peptide sequence, were tested for their capacity to elicit specific immune responses in HLA A2.1 transgenic mice. Peptides A and B, but not C, induced the production of specific antisera, while A and C induced the generation of specific cytotoxic T lymphocytes.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Casnici C,Volpe G,Lattuada D,Crotta K,Kuka M,Panuzzo C,Mastrotto C,Tonon G,Fazio VM,Saglio G,Marelli Odoi
10.1016/j.canlet.2008.10.032subject
Has Abstractpub_date
2009-04-08 00:00:00pages
61-7issue
1eissn
0304-3835issn
1872-7980pii
S0304-3835(08)00857-4journal_volume
276pub_type
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