کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8453484 1547902 2016 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
MiRNA expression profile of chronic lymphocytic leukemia patients with 13q deletion
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
MiRNA expression profile of chronic lymphocytic leukemia patients with 13q deletion
چکیده انگلیسی
Deletion 13q (13q-) is the most common cytogenetic aberration in chronic lymphocytic leukemia (CLL) and is associated with the most favorable prognosis as the sole cytogenetic abnormality. However, it is heterogeneous whereby CLL patients with higher percentages of 13q- cells (13q-H) have a more aggressive clinical course and a distinct gene expression profile. The microRNA (miRNA) expression profile of CLL gives additional biological and prognostic information, but its expression in 13q- CLL has not been examined in detail. The miRNA expression of clonal B cell lymphocytes (CD19+ cells) of 38 CLL patients and normal B cells of six healthy donors was analyzed. CLL patients with higher percentages of 13q- cells (≥80%) showed a different level of miRNA expression from patients with lower percentages (<80%). Interestingly, miR-143 was downregulated and miR-155 was overexpressed in 13q-H. This deregulation affected important validated target genes involved in apoptosis (BCL2, MDM2, TP53INP1) and proliferation (KRAS, PI3K-AKT signaling), that could lead to decreased apoptosis and increased proliferation in 13q-H patients. This study provides new evidence about the heterogeneity of the 13q deletion in CLL patients, showing that miRNA regulation could be involved in several significant pathways deregulated in CLL patients with a high number of losses in 13q.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Leukemia Research - Volume 46, July 2016, Pages 30-36
نویسندگان
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