کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3299455 1209929 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Functional Role of Flip in Conferring Resistance of Crohn’s Disease Lamina Propria Lymphocytes to FAS-Mediated Apoptosis
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری‌های گوارشی
پیش نمایش صفحه اول مقاله
A Functional Role of Flip in Conferring Resistance of Crohn’s Disease Lamina Propria Lymphocytes to FAS-Mediated Apoptosis
چکیده انگلیسی

Background & Aims: There is evidence that, in Crohn’s disease (CD), lamina propria T lymphocytes (LPLs) are resistant to FAS-mediated apoptosis and that this defect contributes to the mucosal T-cell accumulation. In this study we examined the functional role of Flip, a Flice inhibitor protein, in the resistance of CD LPL to FAS-mediated apoptosis. Methods: Biopsy specimens and LPLs were taken from CD and ulcerative colitis (UC) patients and normal controls and analyzed for Flip by Western blotting. We also examined whether inhibition of Flip by antisense oligonucleotide restored the susceptibility of CD LPLs to FAS-induced apoptosis. LPL apoptosis was assessed by flow cytometry. Results: After FAS stimulation, the rate of apoptosis of CD3+ LPLs was higher in normal controls and patients with UC than in patients with CD. Enhanced expression of both long and short Flip isoforms was seen in biopsy specimens and purified CD3+ and CD45RO+ LPLs of CD patients in comparison with UC patients and normal controls. No increase in Flip was documented in untreated celiac disease mucosa, thus suggesting the possibility that induction of Flip in the gut does not simply rely on the ongoing inflammation. Finally, we showed that inhibition of Flip by antisense oligonucleotide reverted the resistance of CD LPLs to FAS-induced apoptosis. Conclusions: Data suggest a role for Flip in the resistance of CD LPLs to FAS-mediated apoptosis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gastroenterology - Volume 130, Issue 2, February 2006, Pages 389–397
نویسندگان
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