Evidence map›Paper›PMID 25363242›Full record

ArticleHepatology (Baltimore, Md.)2015

Conjugated bile acid-activated S1P receptor 2 is a key regulator of sphingosine kinase 2 and hepatic gene expression.

Masayuki Nagahashi, Kazuaki Takabe, Runping Liu, Kesong Peng, Xiang Wang, Yun Wang, Nitai C Hait, Xuan Wang, Jeremy C Allegood, Akimitsu Yamada and 6 more

Open access · greenAbstract read
In one paragraph

Article in Hepatology (Baltimore, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 135 papers.

0numbers the graph read from it
0cells of the map it votes in
135citing papers in PubMed
4.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

135 citing papers in PubMed, 203 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Bile acid signaling in health and disease.Molecular biomedicine · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Cholestasis in Alcohol-Associated Liver Disease.The American journal of pathology · 2026
    Review
  10. Article
  11. Review
  12. Review
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Review
  20. Article

75 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

16 authors at 1 institution in 2 countries.

Masayuki NagahashiDepartment of Surgery, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA; Department of Biochemistry and Molecular Biology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA; Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
Kazuaki Takabe
Runping Liu
Kesong Peng
Xiang Wang
Yun Wang
Nitai C Hait
Xuan Wang
Jeremy C Allegood
Akimitsu Yamada
Tomoyoshi Aoyagi
Jie Liang
William M Pandak
Sarah Spiegel
Phillip B Hylemon
Huiping Zhou
Virginia Commonwealth University Medical Center · US

Funding

Virus Vector Shared ResourceP30CA016059 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI Keri R Maher · 1985 to 2026
$51.0M
Regulation of Hepatic SphK2 by Bile Acids: Effects on Lipid MetabolismR01DK057543 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI HYLEMON, PHILLIP B, ZHOU, HUIPING ROSE · 2001 to 2015
$4.4M
SPHINGOSINE AS A MODULATOR OF CELLULAR PROLIFERATIONR01GM043880 · NIGMS · VIRGINIA COMMONWEALTH UNIVERSITY · PI SPIEGEL, SARAH · 1990 to 2023
$3.8M
Sphingosine Kinases in Cancer Cell SignalingR01CA061774 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI SPIEGEL, SARAH · 1994 to 2015
$3.8M
Sphingosine-1 phosphate phosphohydrolaseR37GM043880 · NIGMS · VIRGINIA COMMONWEALTH UNIVERSITY · PI SPIEGEL, SARAH · 2003 to 2012
$3.2M
Sphingosine-1 Phosphate in Breast Cancer Progression and LymphangiogenesisR01CA160688 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI TAKABE, KAZUAKI · 2012 to 2016
$1.5M
Role of Cholesterol in Non Alcoholic Fatty LiverI01BX000197 · VA · VA VETERANS ADMINISTRATION HOSPITAL · PI PANDAK, WILLIAM M · 2009 to 2021
–
BLRD VA I01 BX000197NCI NIH HHS P30 CA016059NCI NIH HHS P30CA016059NCI NIH HHS R01 CA061774NCI NIH HHS R01 CA160688NCI NIH HHS R01CA160688NIDDK NIH HHS R01 DK057543NIDDK NIH HHS R01 DK-057543-11NIGMS NIH HHS R01 GM043880NIGMS NIH HHS R37 GM043880NIGMS NIH HHS R37GM043880
6 · The paper itself

Abstract

unlabelledBile acids are important hormones during the feed/fast cycle, allowing the liver to coordinately regulate nutrient metabolism. How they accomplish this has not been fully elucidated. Conjugated bile acids activate both the ERK1/2 and AKT signaling pathways via sphingosine 1-phosphate receptor 2 (S1PR2) in rodent hepatocytes and in vivo. Here, we report that feeding mice a high-fat diet, infusion of taurocholate into the chronic bile fistula rat, or overexpression of the gene encoding S1PR2 in mouse hepatocytes significantly upregulated hepatic sphingosine kinase 2 (SphK2) but not SphK1. Key genes encoding nuclear receptors/enzymes involved in nutrient metabolism were significantly downregulated in livers of S1PR2(-/-) and SphK2(-/-) mice. In contrast, overexpression of the gene encoding S1PR2 in primary mouse hepatocytes differentially increased SphK2, but not SphK1, and mRNA levels of key genes involved in nutrient metabolism. Nuclear levels of sphingosine-1-phosphate, an endogenous inhibitor of histone deacetylases 1 and 2, as well as the acetylation of histones H3K9, H4K5, and H2BK12 were significantly decreased in hepatocytes prepared from S1PR2(-/-) and SphK2(-/-) mice.

conclusionBoth S1PR2(-/-) and SphK2(-/-) mice rapidly developed fatty livers on a high-fat diet, suggesting the importance of conjugated bile acids, S1PR2, and SphK2 in regulating hepatic lipid metabolism.

Indexed as

Gene Expression RegulationAnimalsBile Acids and SaltsHepatocytesLiverMaleMicePhosphotransferases (Alcohol Group Acceptor)RatsRats, Sprague-DawleyReceptors, LysosphingolipidSphingosine KinaseBile Acids and SaltsPhosphotransferases (Alcohol Group Acceptor)Receptors, LysosphingolipidSphingosine Kinase

Identifiers

PMID25363242
PMCPMC4376566
OpenAlexW1868247522

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.