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Cited by 257

The DOI matches its OpenAlex record; 3 of the 3 references it cites were found in a registry or an index.

Phosphoenolpyruvate Carboxykinase Is Necessary for the Integration of Hepatic Energy Metabolism

Open access
Pengxiang She, Masakazu Shiota, Kathy D. Shelton, Roger G. Chalkley, Catherine Postic, Mark A. Magnuson·2000·Molecular and Cellular Biology

Abstract

We used an allelogenic Cre/loxP gene targeting strategy in mice to determine the role of cytosolic phosphoenolpyruvate carboxykinase (PEPCK) in hepatic energy metabolism. Mice that lack this enzyme die within 3 days of birth, while mice with at least a 90% global reduction of PEPCK, or a liver-specific knockout of PEPCK, are viable. Surprisingly, in both cases these animals remain euglycemic after a 24-h fast. However, mice without hepatic PEPCK develop hepatic steatosis after fasting despite up-regulation of a variety of genes encoding free fatty acid-oxidizing enzymes. Also, marked alterations in the expression of hepatic genes involved in energy metabolism occur in the absence of any changes in plasma hormone concentrations. Given that a ninefold elevation of the hepatic malate concentration occurs in the liver-specific PEPCK knockout mice, we suggest that one or more intermediary metabolites may directly regulate expression of the affected genes. Thus, hepatic PEPCK may function more as an integrator of hepatic energy metabolism than as a determinant of gluconeogenesis.

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OpenAlex · 10.1128/.20.17.6508-6517.2000

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Metadata

Authors
She, P., Shiota, M., Shelton, K. D., Chalkley, R. G., Postic, C., & Magnuson, M. A.
Venue
Molecular and Cellular Biology
Publisher
Taylor & Francis
Published
2000-01-01
Volume
20
Issue
17
Pages
6508-6517
ISSN
0270-7306 (ISSN-L)
OpenAlex
W2124697228
Cited by
257
References
3
FWCI
2.93
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Phosphoenolpyruvate Carboxykinase Is Necessary for the Integration of Hepatic Energy Metabolism. https://app.cochat.ai/papers/10.1128/.20.17.6508-6517.2000
The paper
She, P., Shiota, M., Shelton, K. D., Chalkley, R. G., Postic, C., & Magnuson, M. A. (2000). Phosphoenolpyruvate Carboxykinase Is Necessary for the Integration of Hepatic Energy Metabolism. Molecular and Cellular Biology. https://doi.org/10.1128/.20.17.6508-6517.2000

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.