Thursday, Mar.28, 2024
miRNA:

hsa-miR-451

Disease:

glioblastoma

Relationship type:

Causal

Detection method for miRNA expression:

Northern blot, qRT-PCR etc

Expression pattern of miRNA:

down-regulated

Validated targets of miRNA from the reference:

unknown

Validated targets of miRNA from TarBase:

unknown : More...

Predicted targets: MIRANDA, TARGETSCAN, PICTAR-VERT

 

Description:

We examined the microRNA profiles of Glioblastoma stem (CD133+) and non-stem (CD133-) cell populations and found up-regulation of several miRs in the CD133- cells, including miR-451, miR-486, and miR-425, some of which may be involved in regulation of brain differentiation. Transfection of GBM cells with the above miRs inhibited neurosphere formation and transfection with the mature miR-451 dispersed neurospheres, and inhibited GBM cell growth. Furthermore, transfection of miR-451 combined with Imatinib mesylate treatment had a cooperative effect in dispersal of GBM neurospheres. In addition, we identified a target site for SMAD in the promoter region of miR-451 and showed that SMAD3 and 4 activate such a promoter-luciferase construct. Transfection of SMAD in GBM cells inhibited their growth, suggesting that SMAD may drive GBM stem cells to differentiate to CD133- cells through up-regulation of miR-451 and reduces their tumorigenicity.

 

 

Reference:

MIR-451 and Imatinib mesylate inhibit tumor growth of Glioblastoma stem cells. | PMID:18765229
Gal H, Pandi G, Kanner AA, Ram Z
Biochem Biophys Res Commun. 2008 Nov 7;376(1):86-90. Epub 2008 Aug 31.

 

 
 
 
  miRBase
  Tarbase
  miRGen
  miRGator
  CCBB
  MicroRNA.org
  miRRim
  miRNAMap 2.0
 
 
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