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A Novel Transgenic Mouse Line for Tracing MicroRNA-155-5p Activity In Vivo.


ABSTRACT: MicroRNA-155 (miR-155) plays significant role in various physiological processes involving both innate and adaptive immunity. miR-155 expression level changes dynamically during various immune responses. However, current approaches for miR-155 detection at the RNA level do not precisely reflect the real-time activity. Herein, we generated a transgenic mouse line (R26-DTR-155T) for determination of miR-155-5p activity in vivo by inserting miR-155-5p target sequence downstream of a reporter transgene comprising Diphtheria Toxin Receptor and TagBlue fluorescence protein. Using this approach, R26-DTR-155T mice were able to measure variation in levels of miR-155-5p activity in specific cell types of interest. The DTR expression levels were inversely correlated with the endogenous miR-155 expression pattern as detected by quantitative RT-PCR. Our data demonstrate a novel transgenic mouse line which could be useful for tracing miR-155-5p activity in specific cell types through measurement of miR-155-5p activity at single cell level.

SUBMITTER: Phiwpan K 

PROVIDER: S-EPMC4452368 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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A Novel Transgenic Mouse Line for Tracing MicroRNA-155-5p Activity In Vivo.

Phiwpan Krung K   Guo Jie J   Zhang Wei W   Hu Tanyu T   Boruah Bhargavi M BM   Zhang Jianhua J   Zhou Xuyu X  

PloS one 20150601 6


MicroRNA-155 (miR-155) plays significant role in various physiological processes involving both innate and adaptive immunity. miR-155 expression level changes dynamically during various immune responses. However, current approaches for miR-155 detection at the RNA level do not precisely reflect the real-time activity. Herein, we generated a transgenic mouse line (R26-DTR-155T) for determination of miR-155-5p activity in vivo by inserting miR-155-5p target sequence downstream of a reporter transg  ...[more]

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