ArticleEMBO reports2024
Adipocyte HSL is required for maintaining circulating vitamin A and RBP4 levels during fasting.
Article in EMBO reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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Who cites it
7 citing papers in PubMed.
- The therapeutic potential of vitamins as nutrients in food for anti-inflammatory and anti-oxidative stress in liver fibrosis diseases.Frontiers in nutrition · 2026Review
- Sex and Age but Not Body Mass Index (BMI) Predict Serum Retinol Binding Protein 4 (RBP4) and Transthyretin (TTR) Concentrations.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Article
- Phosphoenolpyruvate carboxykinase 2 (PCK2) attenuates bovine adipocyte lipolysis through PNPLA2 activity repression.Functional & integrative genomics · 2025Article
- Feedback regulation of retinaldehyde reductase DHRS3, a critical determinant of retinoic acid homeostasis.FEBS letters · 2025Article
- Retinol-binding protein 4 in skeletal and cardiac muscle: molecular mechanisms, clinical implications, and future perspectives.Frontiers in cell and developmental biology · 2025Review
- Immunometabolic effects ofImmunometabolism (Cobham, Surrey) · 2024Review
- The pathogenic role of retinoid nuclear receptor signaling in cancer and metabolic syndromes.The Journal of experimental medicine · 2024Review
Corrections and comments
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Authors and funding
22 authors.
Funding
Abstract
Vitamin A (retinol) is distributed via the blood bound to its specific carrier protein, retinol-binding protein 4 (RBP4). Retinol-loaded RBP4 is secreted into the circulation exclusively from hepatocytes, thereby mobilizing hepatic retinoid stores that represent the major vitamin A reserves in the body. The relevance of extrahepatic retinoid stores for circulating retinol and RBP4 levels that are usually kept within narrow physiological limits is unknown. Here, we show that fasting affects retinoid mobilization in a tissue-specific manner, and that hormone-sensitive lipase (HSL) in adipose tissue is required to maintain serum concentrations of retinol and RBP4 during fasting in mice. We found that extracellular retinol-free apo-RBP4 induces retinol release by adipocytes in an HSL-dependent manner. Consistently, global or adipocyte-specific HSL deficiency leads to an accumulation of retinoids in adipose tissue and a drop of serum retinol and RBP4 during fasting, which affects retinoid-responsive gene expression in eye and kidney and lowers renal retinoid content. These findings establish a novel crosstalk between liver and adipose tissue retinoid stores for the maintenance of systemic vitamin A homeostasis during fasting.
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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.