CUI, B., L. CHEN, S. ZHANG, Marek MRÁZ, J.F. FECTEAU, J. YU, E.M. GHIA, L. ZHANG, L. BAO, LZ. RASSENTI, K. MESSER, GA. CALIN, CM. CROCE and TJ. KIPPS. MicroRNA-155 influences B-cell receptor signaling and associates with aggressive disease in chronic lymphocytic leukemia. Blood. USA: W.B. Saunders, 2014, vol. 124, No 4, p. 546-554. ISSN 0006-4971. Available from: https://dx.doi.org/10.1182/blood-2014-03-559690.
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Basic information
Original name MicroRNA-155 influences B-cell receptor signaling and associates with aggressive disease in chronic lymphocytic leukemia.
Authors CUI, B. (840 United States of America), L. CHEN (840 United States of America), S. ZHANG (840 United States of America), Marek MRÁZ (203 Czech Republic, guarantor, belonging to the institution), J.F. FECTEAU (840 United States of America), J. YU (840 United States of America), E.M. GHIA (840 United States of America), L. ZHANG (840 United States of America), L. BAO (840 United States of America), LZ. RASSENTI (840 United States of America), K. MESSER (840 United States of America), GA. CALIN (840 United States of America), CM. CROCE (840 United States of America) and TJ. KIPPS (840 United States of America).
Edition Blood, USA, W.B. Saunders, 2014, 0006-4971.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 30200 3.2 Clinical medicine
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 10.452
RIV identification code RIV/00216224:14740/14:00078339
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1182/blood-2014-03-559690
UT WoS 000342619600018
Keywords in English B-cell receptor; miR-155; chronic lymphocytic leukemia
Tags kontrola MP, rivok
Tags International impact, Reviewed
Changed by Changed by: Martina Prášilová, učo 342282. Changed: 11/3/2015 15:41.
Abstract
High-level leukemia cell expression of micro-RNA 155 (miR-155) is associated with more aggressive disease in patients with chronic lymphocytic leukemia (CLL), including those cases with a low-level expression of -chain-associated protein of 70 kD. CLL with high-level miR-155 expressed lower levels of Src homology-2 domain-containing inositol 5-phosphatase 1 and were more responsive to B-cell receptor (BCR) ligation than CLL with low-level miR-155. Transfection with miR-155 enhanced responsiveness to BCR ligation, whereas transfection with a miR-155 inhibitor had the opposite effect. CLL in lymphoid tissue expressed higher levels of miR155HG than CLL in the blood of the same patient. Also, isolated CD5(bright)CXCR4(dim) cells, representing CLL that had been newly released from the microenvironment, expressed higher levels of miR-155 and were more responsive to BCR ligation than isolated CD5(dim)CXCR4(bright) cells of the same patient. Treatment of CLL or normal B cells with CD40-ligand or B-cell-activating factor upregulated miR-155 and enhanced sensitivity to BCR ligation, effects that could be blocked by inhibitors to miR-155. This study demonstrates that the sensitivity to BCR ligation can be enhanced by high-level expression of miR-155, which in turn can be induced by crosstalk within the tissue microenvironment, potentially contributing to its association with adverse clinical outcome in patients with CLL.
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