ArticleJCI insight2023
Endothelial-derived FABP4 constitutes the majority of basal circulating hormone and regulates lipolysis-driven insulin secretion.
Article in JCI insight, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 19 citations in OpenAlex.
- Adipose tissue-derived small extracellular vesicles and blood-brain barrier function in adults with overweight and obesity.Experimental physiology · 2026Trial
- Response of circulating fatty acid binding protein 4 concentration to low-intensity acute aerobic exercise is amplified in an exercise duration-dependent manner in healthy men.Journal of physiological anthropology · 2024Trial
- Peritoneal ovarian cancer growth in the omentum proceeds independently of mature adipocytes.Nature communications · 2026Article
- Article
- Perivascular adipokine signaling in abdominal aortic aneurysm: cardiometabolic drivers of vascular remodeling and translational opportunities.Cardiovascular diabetology · 2026Review
- Defining the vascular niche of human adipose tissue across metabolic states.Nature metabolism · 2026Article
- Single-nucleus mRNA-sequencing reveals dynamics of lipogenic and thermogenic adipocyte populations in murine brown adipose tissue in response to cold exposure.Molecular metabolism · 2025Article
- Adipocytes are dispensable in shaping the ovarian cancer tumor microenvironment in the omentum.bioRxiv : the preprint server for biology · 2025Article
- FABP5 regulates ether lipid metabolism to ameliorate atopic dermatitis.bioRxiv : the preprint server for biology · 2025Article
- The Adipokine Hypothesis of Heart Failure With a Preserved Ejection Fraction: A Novel Framework to Explain Pathogenesis and Guide Treatment.Journal of the American College of Cardiology · 2025Review
- Defining the vascular niche of human adipose tissue across metabolic states.bioRxiv : the preprint server for biology · 2025Article
- Emerging Insights into Brown Adipose Tissue Crosstalk With Pancreatic β-Cells in Metabolic Regulation.Endocrinology · 2025Review
- Adipocyte CLDN5 promotes thermogenesis and energy expenditure through regulation of IL10 expression.Nature communications · 2025Article
- Metabolic Roles of Fatty Acid Binding Protein 4 (FABP4) in Fetal and Maternal Health and Maintenance of Pregnancy in Women with Obesity: A Review.Medical science monitor : international medical journal of experimental and clinical research · 2025Review
- Broad PFAS Binding with Fatty Acid Binding Protein 4 Is Enabled by Variable Binding Modes.JACS Au · 2025Article
- Targeting Mitochondrial Dysfunction to Prevent Endothelial Dysfunction and Atherosclerosis in Diabetes: Focus on the Novel Uncoupler BAM15.International journal of molecular sciences · 2025Review
- Associations between circulating levels of FABP4 and TNF receptors are more evident in patients with type 2 diabetes mellitus than in patients with type 1 diabetes mellitus.Endocrine connections · 2024Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
Fatty acid binding protein 4 (FABP4) is a lipid chaperone secreted from adipocytes upon stimulation of lipolysis. Circulating FABP4 levels strongly correlate with obesity and metabolic pathologies in experimental models and humans. While adipocytes have been presumed to be the major source of hormonal FABP4, this question has not been addressed definitively in vivo. We generated mice with Fabp4 deletion in cells known to express the gene - adipocytes (Adipo-KO), endothelial cells (Endo-KO), myeloid cells (Myeloid-KO), and the whole body (Total-KO) - to examine the contribution of these cell types to basal and stimulated plasma FABP4 levels. Unexpectedly, baseline plasma FABP4 was not significantly reduced in Adipo-KO mice, whereas Endo-KO mice showed ~87% reduction versus WT controls. In contrast, Adipo-KO mice exhibited ~62% decreased induction of FABP4 responses to lipolysis, while Endo-KO mice showed only mildly decreased induction, indicating that adipocytes are the main source of increases in FABP4 during lipolysis. We did not detect any myeloid contribution to circulating FABP4. Surprisingly, despite the nearly intact induction of FABP4, Endo-KO mice showed blunted lipolysis-induced insulin secretion, identical to Total-KO mice. We conclude that the endothelium is the major source of baseline hormonal FABP4 and is required for the insulin response to lipolysis.
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Registered trials
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.