Cell-type specific expression of a dominant negative PKA mutation in mice.
Cell-type specific expression of a dominant negative PKA mutation in mice.
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DOI:
10.1371/journal.pone.0018772
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发表时间:
2011-04-12
期刊:
影响因子:
3.7
通讯作者:
McKnight GS
中科院分区:
文献类型:
--
作者:
Willis BS;Niswender CM;Su T;Amieux PS;McKnight GS
We employed the Cre recombinase/loxP system to create a mouse line in which PKA activity can be inhibited in any cell-type that expresses Cre recombinase. The mouse line carries a mutant Prkar1a allele encoding a glycine to aspartate substitution at position 324 in the carboxy-terminal cAMP-binding domain (site B). This mutation produces a dominant negative RIα regulatory subunit (RIαB) and leads to inhibition of PKA activity. Insertion of a loxP-flanked neomycin cassette in the intron preceding the site B mutation prevents expression of the mutant RIαB allele until Cre-mediated excision of the cassette occurs. Embryonic stem cells expressing RIαB demonstrated a reduction in PKA activity and inhibition of cAMP-responsive gene expression. Mice expressing RIαB in hepatocytes exhibited reduced PKA activity, normal fasting induced gene expression, and enhanced glucose disposal. Activation of the RIαB allele in vivo provides a novel system for the analysis of PKA function in physiology.
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DOI:
10.1073/pnas.97.12.6433
发表时间:
2000-06-06
影响因子:
11.1
作者:
Desseyn, JL;Burton, KA;McKnight, GS
通讯作者:
McKnight, GS
影响因子:
4.8
作者:
Amieux, PS;Cummings, DE;McKnight, GS
通讯作者:
McKnight, GS
影响因子:
5.3
作者:
MATTHEWS, RP;GUTHRIE, CR;MCKNIGHT, GS
通讯作者:
MCKNIGHT, GS
影响因子:
30.8
作者:
Kirschner, LS;Carney, JA;Stratakis, CA
通讯作者:
Stratakis, CA
影响因子:
64.8
作者:
Cummings, DE;Brandon, EP;McKnight, GS
通讯作者:
McKnight, GS