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Reactivity against microsatellite instability-induced frameshift mutations in patients with inflammatory bowel disease

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World Journal of Gastroenterology 2015年第1期21卷 221-228页

作者： florian kuehn Ernst Klar Anja Bliemeister Michael Linnebacher Department of General ThoracicVascular and Transplantation SurgeryMolecular Oncology and ImmunotherapyUniversity of Rostock18057 RostockGermany

AIM: To analyze the cellular immune response towards microsatellite-instability(MSI)-induced frameshift-peptides(FSPs) in patients suffering from inflammatory bowel disease(IBD) with and without thiopurine-based immunosuppressive ***: Frequencies of peripheral blood T cell responses of IBD patients(n = 75) against FSPs derived from 14 microsatellite-containing candidate genes were quantified by interferon-γ enzyme-linked immunospot.T cells derived from 20 healthy individuals served as ***: Significant T cell reactivities against MSIinduced FSPs were observed in 59 of 75 IBD patients(78.7%).This was significantly more as we could observe in 20 healthy controls(P = 0.001).Overall,the reactivity was significantly influenced by thiopurine treatment(P = 0.032) and duration of disease(P = 0.002) but not by duration or cumulative amount of thiopurine therapy(P = 0.476).Unexpected,15 of 24(62.5%) IBD patients without prior thiopurine treatment also showed increased FSP-specific immune responses(P = 0.001).CONCLUSION: These findings propose FSPs as potential novel class of inflammation-associated antigens and this in turn may have implications for screening,diagnosis as well as clinical management of patients suffering from IBD and other inflammatory conditions.

关键词： Microsatellite-instability Inflammatory bowel dise

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