Abstract:
:In our previous study, we demonstrated that a peptide derived from the novel centrosome residing protein Cep55/c10orf3 can be targeted by the cytotoxic T lymphocytes (CTLs) in peripheral blood mononuclear cells (PBMCs) of breast carcinoma patients. In this report, we evaluated the feasibility of cancer immunotherapy using Cep55/c10orf3 peptide for colorectal carcinoma (CRC). To evaluate the expression of Cep55/c10orf3 in CRC tissues, we performed immunohistochemical staining of using anti-Cep55/c10orf3 monoclonal antibody. Sixty-three percent cases showed weak positive for Cep55/c10orf3 in total 70 CRC cases. The Cep55/c10orf3 expression intention was collated with high histological grade of CRC. Thus, we hypothesized that Cep55/c10orf3 can also be the target of CTLs in CRC cases. We generated CTLs from PBMCs of human leukocyte antigen (HLA)-A24-positive colorectal carcinoma patients using HLA-A24-restricted Cep55/c10orf3 peptides. Two of 6 colorectal cancer patients were reactive for the Cep55/c10orf3_193(10) peptide, which was the only immunogenic peptide in breast carcinoma patients. CTL clone specific for Cep55/c10orf3_193(10) recognized and lysed HLA-A24 (+) and Cep55/c10orf3 (+) colorectal carcinoma cell lines. In addition, 1 of 6 colorectal carcinoma patients was reactive for the Cep55/c10orf3_402(11) and Cep55/c10orf3_283(12) peptides, but not for Cep55/c10orf3_193(10) with the ELISPOT assay. These observations suggest that the antigenic peptide repertoire presented by HLA-A24 in colorectal carcinoma might be different from that in breast carcinoma. Thus, these peptide vaccination peptide mixture of Cep55/c10orf3_193(10), Cep55/c10orf3_402(11) and Cep55/c10orf3_283(12) might be more effective than a single peptide in the treatment of colorectal carcinoma patients.
journal_name
Exp Mol Patholjournal_title
Experimental and molecular pathologyauthors
Inoda S,Morita R,Hirohashi Y,Torigoe T,Asanuma H,Nakazawa E,Nakatsugawa M,Tamura Y,Kamiguchi K,Tsuruma T,Terui T,Ishitani K,Hashino S,Wang Q,Greene MI,Hasegawa T,Hirata K,Asaka M,Sato Ndoi
10.1016/j.yexmp.2010.10.001subject
Has Abstractpub_date
2011-02-01 00:00:00pages
55-60issue
1eissn
0014-4800issn
1096-0945pii
S0014-4800(10)00130-9journal_volume
90pub_type
杂志文章abstract::To study the effects of homocysteine on epithelial and stromal tissues, the free base of homocysteine thiolactone was synthesized and administered to mice. Intraperitoneal and intramuscular doses of 0.2 to 2.0 mg/g are acutely toxic, causing as much as 90% mortality because of intense tissue necrosis at the injection ...
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journal_title:Experimental and molecular pathology
pub_type: 杂志文章
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journal_title:Experimental and molecular pathology
pub_type: 杂志文章
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journal_title:Experimental and molecular pathology
pub_type: 杂志文章
doi:10.1016/j.yexmp.2009.01.013
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journal_title:Experimental and molecular pathology
pub_type: 杂志文章
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journal_title:Experimental and molecular pathology
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