Unknown

Dataset Information

0

Disease Phenotypes in a Mouse Model of RNA Toxicity Are Independent of Protein Kinase C? and Protein Kinase C?.


ABSTRACT: Myotonic dystrophy type 1(DM1) is the prototype for diseases caused by RNA toxicity. RNAs from the mutant allele contain an expanded (CUG)n tract within the 3' untranslated region of the dystrophia myotonica protein kinase (DMPK) gene. The toxic RNAs affect the function of RNA binding proteins leading to sequestration of muscleblind-like (MBNL) proteins and increased levels of CELF1 (CUGBP, Elav-like family member 1). The mechanism for increased CELF1 is not very clear. One favored proposition is hyper-phosphorylation of CELF1 by Protein Kinase C alpha (PKC?) leading to increased CELF1 stability. However, most of the evidence supporting a role for PKC-? relies on pharmacological inhibition of PKC. To further investigate the role of PKCs in the pathogenesis of RNA toxicity, we generated transgenic mice with RNA toxicity that lacked both the PKC? and PKC? isoforms. We find that these mice show similar disease progression as mice wildtype for the PKC isoforms. Additionally, the expression of CELF1 is also not affected by deficiency of PKC? and PKC? in these RNA toxicity mice. These data suggest that disease phenotypes of these RNA toxicity mice are independent of PKC? and PKC?.

SUBMITTER: Kim YK 

PROVIDER: S-EPMC5033491 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

altmetric image

Publications

Disease Phenotypes in a Mouse Model of RNA Toxicity Are Independent of Protein Kinase Cα and Protein Kinase Cβ.

Kim Yun K YK   Yadava Ramesh S RS   Mandal Mahua M   Mahadevan Karunasai K   Yu Qing Q   Leitges Michael M   Mahadevan Mani S MS  

PloS one 20160922 9


Myotonic dystrophy type 1(DM1) is the prototype for diseases caused by RNA toxicity. RNAs from the mutant allele contain an expanded (CUG)n tract within the 3' untranslated region of the dystrophia myotonica protein kinase (DMPK) gene. The toxic RNAs affect the function of RNA binding proteins leading to sequestration of muscleblind-like (MBNL) proteins and increased levels of CELF1 (CUGBP, Elav-like family member 1). The mechanism for increased CELF1 is not very clear. One favored proposition i  ...[more]

Similar Datasets

| S-EPMC8636463 | biostudies-literature
| S-EPMC9684486 | biostudies-literature
| S-EPMC6606845 | biostudies-literature
| S-EPMC7875496 | biostudies-literature
| S-EPMC8305400 | biostudies-literature
| S-EPMC3349422 | biostudies-literature
| S-EPMC4067214 | biostudies-literature
| S-EPMC5954273 | biostudies-literature
| S-EPMC5657492 | biostudies-literature
| S-EPMC4710240 | biostudies-literature