Leptin regulates the expression of angiopoietin-like 6

Min Jeong Kim, Jun Namkung, Jae Seung Chang, Soo Jin Kim, Kyusang Park, Indeok Kong

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Angiopoietin-like 6 (ANGPTL6) is a hepatokine that antagonizes obesity and insulin resistance by increasing energy expenditure. Despite its beneficial effects on metabolism, human studies have shown a paradoxical increase in ANGPTL6 level in the serum of patients with metabolic diseases, which has been interpreted as a compensatory upregulation. However, the regulatory mechanism of ANGPTL6 remains unclear. Since upregulation of ANGPTL6 is induced on metabolic stress, we investigated the hepatic expression of ANGPTL6 by leptin, a representative adipokine of obesity. Mice on a high-fat diet showed increased serum leptin levels and hepatic Angptl6 expression, which were attenuated by exercise training. A single leptin injection also induced hepatic ANGPTL6 expression and increased serum ANGPTL6 levels. In an in vitro model using primary hepatocytes, leptin treatment significantly upregulated ANGPTL6 expression at the mRNA and protein levels, as well as the amount of secreted ANGPTL6 protein in conditioned media. Similarly, exercise training on human participants also showed diminished serum levels of leptin and ANGPTL6. Altogether, these results strongly indicated that hepatic ANGPTL6 expression was determined by leptin.

Original languageEnglish
Pages (from-to)397-402
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume502
Issue number3
DOIs
Publication statusPublished - 2018 Jul 20

Fingerprint

Angiopoietins
Leptin
Liver
Serum
Up-Regulation
Obesity
Exercise
Physiological Stress
Adipokines
Metabolic Diseases
High Fat Diet
Nutrition
Conditioned Culture Medium
Metabolism
Energy Metabolism
Insulin Resistance
Hepatocytes
Proteins

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Kim, Min Jeong ; Namkung, Jun ; Chang, Jae Seung ; Kim, Soo Jin ; Park, Kyusang ; Kong, Indeok. / Leptin regulates the expression of angiopoietin-like 6. In: Biochemical and Biophysical Research Communications. 2018 ; Vol. 502, No. 3. pp. 397-402.
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Leptin regulates the expression of angiopoietin-like 6. / Kim, Min Jeong; Namkung, Jun; Chang, Jae Seung; Kim, Soo Jin; Park, Kyusang; Kong, Indeok.

In: Biochemical and Biophysical Research Communications, Vol. 502, No. 3, 20.07.2018, p. 397-402.

Research output: Contribution to journalArticle

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