J 2014

MicroRNA-155 influences B-cell receptor signaling and associates with aggressive disease in chronic lymphocytic leukemia.

CUI, B., L. CHEN, S. ZHANG, Marek MRÁZ, J.F. FECTEAU et. al.

Základní údaje

Originální název

MicroRNA-155 influences B-cell receptor signaling and associates with aggressive disease in chronic lymphocytic leukemia.

Autoři

CUI, B. (840 Spojené státy), L. CHEN (840 Spojené státy), S. ZHANG (840 Spojené státy), Marek MRÁZ (203 Česká republika, garant, domácí), J.F. FECTEAU (840 Spojené státy), J. YU (840 Spojené státy), E.M. GHIA (840 Spojené státy), L. ZHANG (840 Spojené státy), L. BAO (840 Spojené státy), LZ. RASSENTI (840 Spojené státy), K. MESSER (840 Spojené státy), GA. CALIN (840 Spojené státy), CM. CROCE (840 Spojené státy) a TJ. KIPPS (840 Spojené státy)

Vydání

Blood, USA, W.B. Saunders, 2014, 0006-4971

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30200 3.2 Clinical medicine

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 10.452

Kód RIV

RIV/00216224:14740/14:00078339

Organizační jednotka

Středoevropský technologický institut

UT WoS

000342619600018

Klíčová slova anglicky

B-cell receptor; miR-155; chronic lymphocytic leukemia

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 11. 3. 2015 15:41, Martina Prášilová

Anotace

V originále

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.