FoxO transcription factors are required for hepatic HDL-cholesterol clearance
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FoxO transcription factors are required for hepatic HDL-cholesterol clearance. / Lee, Samuel X; Heine, Markus; Schlein, Christian; Ramakrishnan, Rajasekhar; Liu, Jing; Belnavis, Gabriella; Haimi, Ido; Fischer, Alexander W; Ginsberg, Henry; Heeren, Joerg; Rinninger, Franz; Haeusler, Rebecca A.
in: J CLIN INVEST, Jahrgang 128, Nr. 4, 02.04.2018, S. 1615-1626.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - FoxO transcription factors are required for hepatic HDL-cholesterol clearance
AU - Lee, Samuel X
AU - Heine, Markus
AU - Schlein, Christian
AU - Ramakrishnan, Rajasekhar
AU - Liu, Jing
AU - Belnavis, Gabriella
AU - Haimi, Ido
AU - Fischer, Alexander W
AU - Ginsberg, Henry
AU - Heeren, Joerg
AU - Rinninger, Franz
AU - Haeusler, Rebecca A
PY - 2018/4/2
Y1 - 2018/4/2
N2 - Insulin resistance and type 2 diabetes are associated with low levels of high-density lipoprotein cholesterol (HDL-C). The insulin-repressible FoxO transcription factors are potential mediators of the effect of insulin on HDL-C. FoxOs mediate a substantial portion of insulin-regulated transcription, and poor FoxO repression is thought to contribute to the excessive glucose production in diabetes. In this work, we show that mice with liver-specific triple FoxO knockout (L-FoxO1,3,4), which are known to have reduced hepatic glucose production, also have increased HDL-C. This was associated with decreased expression of the HDL-C clearance factors scavenger receptor class B type I (SR-BI) and hepatic lipase and defective selective uptake of HDL cholesteryl ester by the liver. The phenotype could be rescued by re-expression of SR-BI. These findings demonstrate that hepatic FoxOs are required for cholesterol homeostasis and HDL-mediated reverse cholesterol transport to the liver.
AB - Insulin resistance and type 2 diabetes are associated with low levels of high-density lipoprotein cholesterol (HDL-C). The insulin-repressible FoxO transcription factors are potential mediators of the effect of insulin on HDL-C. FoxOs mediate a substantial portion of insulin-regulated transcription, and poor FoxO repression is thought to contribute to the excessive glucose production in diabetes. In this work, we show that mice with liver-specific triple FoxO knockout (L-FoxO1,3,4), which are known to have reduced hepatic glucose production, also have increased HDL-C. This was associated with decreased expression of the HDL-C clearance factors scavenger receptor class B type I (SR-BI) and hepatic lipase and defective selective uptake of HDL cholesteryl ester by the liver. The phenotype could be rescued by re-expression of SR-BI. These findings demonstrate that hepatic FoxOs are required for cholesterol homeostasis and HDL-mediated reverse cholesterol transport to the liver.
KW - Journal Article
U2 - 10.1172/JCI94230
DO - 10.1172/JCI94230
M3 - SCORING: Journal article
C2 - 29408809
VL - 128
SP - 1615
EP - 1626
JO - J CLIN INVEST
JF - J CLIN INVEST
SN - 0021-9738
IS - 4
ER -