Intestinal epithelial cells promote secretion of leptin and adiponectin in adipocytes
| Autor: | Takeshi Tsuruta, Akihiro Hamada, Martin Wabitsch, Yuki Mizuno, Akiho Miwa, Kei Sonoyama, Rino Ishihara |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Leptin
medicine.medical_specialty Biophysics Adipokine Ileum Cell Communication Biochemistry Mice chemistry.chemical_compound Internal medicine Adipocyte Adipocytes medicine Animals Humans Adiponectin secretion Secretion Intestinal Mucosa Molecular Biology Leptin receptor Adiponectin Chemistry digestive oral and skin physiology Epithelial Cells Cell Biology Intestine Up-Regulation Mice Inbred C57BL medicine.anatomical_structure Endocrinology Caco-2 Cells hormones hormone substitutes and hormone antagonists |
| Zdroj: | Biochemical and Biophysical Research Communications. 458:362-368 |
| ISSN: | 0006-291X |
| DOI: | 10.1016/j.bbrc.2015.01.118 |
| Popis: | Although leptin and adiponectin are the predominant adipokines, how their circulating levels are regulated is incompletely understood. The present study tested whether intestinal epithelial cells influence the expression and secretion of these adipokines by adipocytes. Leptin gene expression and secretion by cultured human primary adipocytes and Simpson-Golabi-Behmel Syndrome adipocytes increased upon coculture with human enterocytic Caco-2 cells or incubation in conditioned medium of Caco-2 cells. Although adiponectin secretion increased, its mRNA levels decreased. Tissue homogenate of the ileum (but not the jejunum, colon, or liver) of nonobese C57BL/6J mice also stimulated leptin and adiponectin secretion by cultured murine 3T3-L1 adipocytes. However, ileal homogenate of obese KK-Ay mice had no effect on leptin and adiponectin secretion. We propose that as yet unidentified humoral factors released from intestinal epithelial cells are involved in regulating circulating leptin and adiponectin levels. Decreased production of such factors may contribute to hyperphagia in KK-Ay mice. (C) 2015 Elsevier Inc. All rights reserved. |
| Databáze: | OpenAIRE |
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