Unknown

Dataset Information

0

Role of PAI-1 in hepatic steatosis and dyslipidemia.


ABSTRACT: Plasminogen activator inhibitor 1 (PAI-1) is a functional biomarker of the metabolic syndrome. Previous studies have demonstrated that PAI-1 is a mechanistic contributor to several elements of the syndrome, including obesity, hypertension and insulin resistance. Here we show that PAI-1 is also a critical regulator of hepatic lipid metabolism. RNA sequencing revealed that PAI-1 directly regulates the transcriptional expression of numerous genes involved in mammalian lipid homeostasis, including PCSK9 and FGF21. Pharmacologic or genetic reductions in plasma PAI-1 activity ameliorates hyperlipidemia in vivo. These experimental findings are complemented with the observation that genetic deficiency of PAI-1 is associated with reduced plasma PCSK9 levels in humans. Taken together, our findings identify PAI-1 as a novel contributor to mammalian lipid metabolism and provides a fundamental mechanistic insight into the pathogenesis of one of the most pervasive medical problems worldwide.

SUBMITTER: Levine JA 

PROVIDER: S-EPMC7801442 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications


Plasminogen activator inhibitor 1 (PAI-1) is a functional biomarker of the metabolic syndrome. Previous studies have demonstrated that PAI-1 is a mechanistic contributor to several elements of the syndrome, including obesity, hypertension and insulin resistance. Here we show that PAI-1 is also a critical regulator of hepatic lipid metabolism. RNA sequencing revealed that PAI-1 directly regulates the transcriptional expression of numerous genes involved in mammalian lipid homeostasis, including P  ...[more]

Similar Datasets

| S-EPMC2631303 | biostudies-literature
| S-EPMC7284623 | biostudies-literature
| S-EPMC6996238 | biostudies-literature
| S-EPMC9644616 | biostudies-literature
| S-EPMC10017156 | biostudies-literature
| S-EPMC3435551 | biostudies-literature
| S-EPMC5976177 | biostudies-literature
| S-EPMC7379109 | biostudies-literature
| S-EPMC4822632 | biostudies-literature
| S-EPMC2867423 | biostudies-literature