INT335731
From wiki-pain
|
|
|
|
|
Sentences Mentioned In
Key: | Protein | Mutation | Event | Anatomy | Negation | Speculation | Pain term | Disease term |
Since seizures are not reported in human IBMPFD patients, these findings combined with the observation that VCP is abundantly expressed in hippocampus [60] propose an important role for VCP in the hippocampal region. | |||||||||||||||
| |||||||||||||||
|
Additionally, Custer et al. have generated transgenic mice expressing VCP/p97 with the R155H and A232E mutations shown to develop pathology of the muscle, bone, and brain exhitibing similar characteristics seen in humans with IBMPFD [32]. | |||||||||||||||
| |||||||||||||||
|
The finding that inhibition of VCP expression promotes apoptosis [44] suggests that intact VCP is indispensable for normal development and cell survival. | |||||||||||||||
| |||||||||||||||
|
We decided to generate a knock-in model, since these mice express the mouse VCP gene at endogenous level and are therefore believed to represent a better model to study the pathology of the human disease and to develop targeted molecular treatment. | |||||||||||||||
| |||||||||||||||
|
Targeted homozygous deletion of VCP by Cre-loxP technology was reported to result in early embryonic lethality [30] suggesting an important role for the intact VCP expression in the development of mouse embryos. | |||||||||||||||
| |||||||||||||||
|
To be able to elucidate tissue and cellular pathology of IBMPFD, we have generated a knock-in mouse model that expresses the most common VCP disease mutation R155H at endogenous level. | |||||||||||||||
| |||||||||||||||
|
Our mice express the R155H mutant VCP gene at an endogenous level compared to previous models which overexpresses the mutant allele. | |||||||||||||||
| |||||||||||||||
|
Progressive deterioration of muscle strength of knock-in mice mirrors the development of late onset muscle weakness reported in patients [1], [3], [45] and transgenic mice expressing R155H VCP [31]. | |||||||||||||||
| |||||||||||||||
|
Transgenic mice overexpressing R155H VCP under a muscle-specific promoter, reported by Weihl et al (2006) [31], demonstrated muscle weakness, and slit-like vacuoles. | |||||||||||||||
| |||||||||||||||
|
Mutations in the VCP gene have been shown to trigger cell death with apoptotic features, whereas expression of wild-type protein has been suggested to have an anti-apoptotic effect [34], [35], [36]. | |||||||||||||||
| |||||||||||||||
|
VCP expression by Q-RT-PCR analyses demonstrated no statistically significant differences between wild type (AVG ? | |||||||||||||||
| |||||||||||||||
|
These findings suggested that mutated VCP may also cause apoptosis in mouse muscle expressing the R155H disease mutation. | |||||||||||||||
| |||||||||||||||
|
Western blot analysis of wild type and mutant quadriceps, brain, heart and liver tissues revealed similar VCP expression levels (Figure 1D,E). | |||||||||||||||
| |||||||||||||||
|
Western blot analysis of wild type and mutant quadriceps, brain, heart and liver tissues revealed similar VCP expression levels (Figure 1D,E). | |||||||||||||||
| |||||||||||||||
|
Western blot analysis of wild type and mutant quadriceps, brain, heart and liver tissues revealed similar VCP expression levels (Figure 1D,E). | |||||||||||||||
| |||||||||||||||
|
Western blot analysis of wild type and mutant quadriceps, brain, heart and liver tissues revealed similar VCP expression levels (Figure 1D,E). | |||||||||||||||
| |||||||||||||||
|
General Comments
This test has worked.