TY - JOUR
T1 - NEAT1 long isoform is highly expressed in chronic lymphocytic leukemia irrespectively of cytogenetic groups or clinical outcome
AU - Ronchetti, Domenica
AU - Favasuli, Vanessa
AU - Monti, Paola
AU - Cutrona, Giovanna
AU - Fabris, Sonia
AU - Silvestris, Ilaria
AU - Agnelli, Luca
AU - Colombo, Monica
AU - Menichini, Paola
AU - Matis, Serena
AU - Gentile, Massimo
AU - Nurtdinov, Ramil
AU - Guigó, Roderic
AU - Baldini, Luca
AU - Fronza, Gilberto
AU - Ferrarini, Manlio
AU - Morabito, Fortunato
AU - Neri, Antonino
AU - Taiana, Elisa
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The biological role and therapeutic potential of long non-coding RNAs (lncRNAs) in chronic lymphocytic leukemia (CLL) are still open questions. Herein, we investigated the significance of the lncRNA NEAT1 in CLL. We examined NEAT1 expression in 310 newly diagnosed Binet A patients, in normal CD19+ B-cells, and other types of B-cell malignancies. Although global NEAT1 expression level was not statistically dierent in CLL cells compared to normal B cells, the median ratio of NEAT1_2 long isoform and global NEAT1 expression in CLL samples was significantly higher than in other groups. NEAT1_2 was more expressed in patients carrying mutated IGHV genes. Concerning cytogenetic aberrations, NEAT1_2 expression in CLL with trisomy 12 was lower with respect to patients without alterations. Although global NEAT1 expression appeared not to be associated with clinical outcome, patients with the lowest NEAT1_2 expression displayed the shortest time to first treatment; however, a multivariate regression analysis showed that the NEAT1_2 risk model was not independent from other known prognostic factors, particularly the IGHV mutational status. Overall, our data prompt future studies to investigate whether the increased amount of the long NEAT1_2 isoform detected in CLL cells may have a specific role in the pathology of the disease.
AB - The biological role and therapeutic potential of long non-coding RNAs (lncRNAs) in chronic lymphocytic leukemia (CLL) are still open questions. Herein, we investigated the significance of the lncRNA NEAT1 in CLL. We examined NEAT1 expression in 310 newly diagnosed Binet A patients, in normal CD19+ B-cells, and other types of B-cell malignancies. Although global NEAT1 expression level was not statistically dierent in CLL cells compared to normal B cells, the median ratio of NEAT1_2 long isoform and global NEAT1 expression in CLL samples was significantly higher than in other groups. NEAT1_2 was more expressed in patients carrying mutated IGHV genes. Concerning cytogenetic aberrations, NEAT1_2 expression in CLL with trisomy 12 was lower with respect to patients without alterations. Although global NEAT1 expression appeared not to be associated with clinical outcome, patients with the lowest NEAT1_2 expression displayed the shortest time to first treatment; however, a multivariate regression analysis showed that the NEAT1_2 risk model was not independent from other known prognostic factors, particularly the IGHV mutational status. Overall, our data prompt future studies to investigate whether the increased amount of the long NEAT1_2 isoform detected in CLL cells may have a specific role in the pathology of the disease.
KW - Chronic lymphocytic leukemia
KW - LncRNA
KW - NEAT1
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U2 - 10.3390/NCRNA6010011
DO - 10.3390/NCRNA6010011
M3 - Article
AN - SCOPUS:85084372429
VL - 6
JO - Non-coding RNA
JF - Non-coding RNA
SN - 2311-553X
IS - 1
M1 - 11
ER -