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| Status |
Public on Aug 24, 2019 |
| Title |
Characterization of ANGPTL4 function in macrophages and adipocytes using Angptl4-knockout and Angptl4-hypomorphic mice |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by array
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| Summary |
ANGPTL4 regulates plasma lipids, making it an attractive target for correcting dyslipidemia. However, ANGPTL4 inactivation in mice fed a high fat diet causes chylous ascites, an acute-phase response, and mesenteric lymphadenopathy. Here, we studied the role of ANGPTL4 in lipid uptake in macrophages and in the above-mentioned pathologies using Angptl4-hypomorphic and Angptl4-/- mice. Angptl4 expression in peritoneal and bone marrow-derived macrophages was highly induced by lipids. Recombinant ANGPTL4 decreased lipid uptake in macrophages, whereas deficiency of ANGPTL4 increased lipid uptake, upregulated lipid-induced genes, and increased respiration. ANGPTL4 deficiency did not alter LPL protein levels in macrophages. Angptl4-hypomorphic mice with partial expression of a truncated N-terminal ANGPTL4 exhibited reduced fasting plasma triglyceride, cholesterol, and non-esterified fatty acid levels, strongly resembling Angptl4-/- mice. However, during high fat feeding, Angptl4-hypomorphic mice showed markedly delayed and attenuated elevation in plasma serum amyloid A and much milder chylous ascites than Angptl4-/- mice, despite similar abundance of lipid-laden giant cells in mesenteric lymph nodes. In conclusion, ANGPTL4 deficiency increases lipid uptake and respiration in macrophages without affecting LPL protein levels. Compared with the absence of ANGPTL4, low levels of N-terminal ANGPTL4 mitigate the development of chylous ascites and an acute-phase response in mice.
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| Overall design |
Peritoneal macrophages were obtained from Angptl4-/- mice and incubated with intralipid in the presence or absence of recombinant ANGPTL4, or PBS.
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| Contributor(s) |
Oteng A, Ruppert PM, Boutens L, Dijk W, van Dierendonck XA, Olivecrona G, Stienstra R, Kersten S |
| Citation(s) |
31409739 |
| Submission date |
Aug 23, 2019 |
| Last update date |
Aug 26, 2019 |
| Contact name |
Guido Hooiveld |
| E-mail(s) |
guido.hooiveld@wur.nl
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| Organization name |
Wageningen University
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| Department |
Div. Human Nutrition & Health
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| Lab |
Nutrition, Metabolism & Genomics Group
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| Street address |
HELIX, Stippeneng 4
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| City |
Wageningen |
| ZIP/Postal code |
NL-6708WE |
| Country |
Netherlands |
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| Platforms (1) |
| GPL6246 |
[MoGene-1_0-st] Affymetrix Mouse Gene 1.0 ST Array [transcript (gene) version] |
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| Samples (3) |
| GSM4043011 |
Peritoneal macrophages, obtained from Angptl4-/- mice, PBS, 3 pooled samples. |
| GSM4043012 |
Peritoneal macrophages, obtained from Angptl4-/- mice, intralipid, 3 pooled samples. |
| GSM4043013 |
Peritoneal macrophages, obtained from Angptl4-/- mice, intralipid + recANGPTL4, 3 pooled samples. |
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| Relations |
| BioProject |
PRJNA561718 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE136240_RAW.tar |
11.5 Mb |
(http)(custom) |
TAR (of CEL) |
| Processed data included within Sample table |
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