J 2018

miR-150 downregulation contributes to the high-grade transformation of follicular lymphoma by upregulating FOXP1 levels

MUSILOVÁ, Kateřina, Ján DEVÁN, Kateřina AMRUZ ČERNÁ, Václav ŠEDA, Gabriela PAVLASOVÁ et. al.

Basic information

Original name

miR-150 downregulation contributes to the high-grade transformation of follicular lymphoma by upregulating FOXP1 levels

Authors

MUSILOVÁ, Kateřina (203 Czech Republic, belonging to the institution), Ján DEVÁN (703 Slovakia, belonging to the institution), Kateřina AMRUZ ČERNÁ (203 Czech Republic, belonging to the institution), Václav ŠEDA (203 Czech Republic, belonging to the institution), Gabriela PAVLASOVÁ (203 Czech Republic, belonging to the institution), Sonali SHARMA (356 India, belonging to the institution), Jan OPPELT (203 Czech Republic, belonging to the institution), R. PYTLIK (203 Czech Republic), V. PROCHAZKA (203 Czech Republic), Z. PROUZOVA (203 Czech Republic), Martin TRBUŠEK (203 Czech Republic, belonging to the institution), L. ZLAMALIKOVA (203 Czech Republic), K. LISKOVA (203 Czech Republic), L. KRUZOVA (203 Czech Republic), M. JAROSOVA (203 Czech Republic), Andrea MAREČKOVÁ (203 Czech Republic), C. KORNAUTH (40 Austria), I. SIMONITSCH-KLUPP (40 Austria), A.I. SCHIEFER (40 Austria), O. MERKEL (40 Austria), H. MOCIKOVA (203 Czech Republic), P. BURDA (203 Czech Republic), K.M. POLAKOVA (203 Czech Republic), L. KREN (203 Czech Republic), Jiří MAYER (203 Czech Republic, belonging to the institution), C.S. ZENT (840 United States of America), M. TRNENY (203 Czech Republic), A.G. EVANS (840 United States of America), Andrea JANÍKOVÁ (203 Czech Republic, belonging to the institution) and Marek MRÁZ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Blood, Washington DC, USA, American Society of Hematology, 2018, 0006-4971

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30205 Hematology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 16.601

RIV identification code

RIV/00216224:14740/18:00105661

Organization unit

Central European Institute of Technology

UT WoS

000451634400012

Keywords in English

B-CELL LYMPHOMA; TRANSCRIPTION FACTOR; T-CELLS; C-MYC; HISTOLOGIC TRANSFORMATION; COPY-NUMBER; KAPPA-B; EXPRESSION; SURVIVAL; MICRORNAS

Tags

International impact, Reviewed
Změněno: 13/3/2019 16:23, Mgr. Pavla Foltynová, Ph.D.

Abstract

V originále

Follicular lymphoma (FL) is a common indolent B-cell malignancy with a variable clinical course. An unfavorable event in its course is histological transformation to a high-grade lymphoma, typically diffuse large B-cell lymphoma. Recent studies show that genetic aberrations ofMYC or its overexpression are associated with FL transformation (tFL). However, the precise molecular mechanisms underlying tFL are unclear. Here we performed the first profiling of expression of microRNAs (miRNAs) in paired samples of FL and tFL and identified 5 miRNAs as being differentially expressed. We focused on one of these miRNAs, namely miR-150, which was uniformly downmodulated in all examined tFLs (similar to 3.5-fold), and observed that high levels of MYC are responsible for repressing miR-150 in tFL by binding in its upstream region. This MYC-mediated repression of miR-150 in B cells is not dependent on LIN28A/B proteins, which influence the maturation of miR-150 precursor (pri-miR-150) in myeloid cells. We also demonstrated that low miR-150 levels in tFL lead to upregulation of its target, namely FOXP1 protein, which is a known positive regulator of cell survival, as well as B-cell receptor and NF-kappa B signaling in malignant B cells. We revealed that low levels of miR-150 and high levels of its target, FOXP1, are associated with shorter overall survival in FL and suggest that miR-150 could serve as a good biomarker measurable in formalin-fixed paraffin-embedded tissue. Overall, our study demonstrates the role of theMYC/miR-150/FOXP1 axis in malignant B cells as a determinant of FL aggressiveness and its high-grade transformation.

Links

LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR
NV16-29622A, research and development project
Name: VLIV TERAPEUTICKÉ INHIBICE BCR SIGNALIZACE NA GENOVOU EXPRESI U B BUNĚČNÝCH MALIGNIT A JEJÍ PROGNOSTICKÝ A PREDIKTIVNÍ VÝZNAM
NV18-03-00054, research and development project
Name: ÚLOHA MICRORNA A JEJICH CÍLOVÝCH MOLEKUL V TRANSFORMACI FOLIKULÁRNÍHO LYMFOMU A AGRESIVITĚ CHRONICKÉ LYMFOCYTÁRNÍ LEUKÉMIE
Investor: Ministry of Health of the CR