The expression and clinical significance of miR-203 in pediatric acute leukemia / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 777-781, 2013.
Article
Dans Chinois
| WPRIM
| ID: wpr-272115
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the methylation, expression and clinical significance of miR-203 in pediatric acute leukemia.</p><p><b>METHODS</b>The methylation status of miR-203 promoter CpG islands was detected with methylation-specific polymerase chain reaction. The expression of miR-203 was detected by Taqman real- time quantitative polymerase chain reaction. And the clinical significance of miR-203 in pediatric acute leukemia (ALL) was also analyzed.</p><p><b>RESULTS</b>The promoter of miR-203 was unmethylated in all of 31 pediatric acute lymphoblastic leukemia, all of 15 pediatric acute myeloid leukemia (AML) and all of 23 controls. The relative expression levels of miR-203 in controls, pediatric acute leukemia, ALL and AML were 16.93±6.31, 48.97±10.38, 55.88±12.91, 24.28±9.10 respectively. The results indicated that miR-203 was significantly up- regulated in pediatric acute leukemia (P=0.011) and ALL (P=0.009), not in pediatric AML (P=0.514) compared with control. The expression of miR-203 was significantly related with the gender, immunophenotype, chromosome, fusion gene, BCR-ABL, SIL-TAL1 and prednisone experiment in pediatric ALL and the gender, chromosome, fusion gene, SIL-TAL1 in pediatric acute leukemia (P<0.05). And in risk stratification pairwise comparisons, the expression of miR-203 in the medium-risk and high-risk groups appeared significantly different (P=0.022).</p><p><b>CONCLUSION</b>miR-203 may not be regulated with methylation mechanism in pediatric acute leukemia. miR- 203 may be a protooncogene involved in the formation of pediatric acute leukemia and ALL. Further analyses indicated that high expression of miR-203 may be associated with poor prognosis of pediatric ALL and acute leukemia.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Leucémies
/
Leucémie myéloïde
/
Études cas-témoins
/
Régulation de l'expression des gènes dans la leucémie
/
Maladie aigüe
/
Régions promotrices (génétique)
/
Ilots CpG
/
Méthylation de l'ADN
/
MicroARN
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Leucémie-lymphome lymphoblastique à précurseurs B et T
Type d'étude:
Étude observationnelle
/
Facteurs de risque
Limites du sujet:
Adolescent
/
Enfant
/
Enfant d'âge préscolaire
/
Femelle
/
Humains
/
Bébé
/
Mâle
langue:
Chinois
Texte intégral:
Chinese Journal of Hematology
Année:
2013
Type:
Article
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