ArticleFluids and barriers of the CNS2022
Nuclear receptor ligand screening in an iPSC-derived in vitro blood-brain barrier model identifies new contributors to leptin transport.
Article in Fluids and barriers of the CNS, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 12 citations in OpenAlex.
- Synergistic Intervention for Obesity: Integrating Central Appetite Regulation and Peripheral Energy Expenditure.Current obesity reports · 2026Review
- Progress in peptide and protein therapeutics: Challenges and strategies.Acta pharmaceutica Sinica. B · 2025Review
- Understanding the Role of Adipokines in Cardiometabolic Dysfunction: A Review of Current Knowledge.Biomolecules · 2025Review
- Syndromic and Monogenic Obesity: New Opportunities Due to Genetic-Based Pharmacological Treatment.Children (Basel, Switzerland) · 2024Review
- Use of CRISPRoff and synthetic Notch to modulate and relay endogenous gene expression programs in engineered cells.Frontiers in bioengineering and biotechnology · 2024Article
- Modelling a Human Blood-Brain Barrier Co-Culture Using an Ultrathin Silicon Nitride Membrane-Based Microfluidic Device.International journal of molecular sciences · 2023Article
- Recent Advances in the Knowledge of the Mechanisms of Leptin Physiology and Actions in Neurological and Metabolic Pathologies.International journal of molecular sciences · 2023Review
- Evidence for an alternative insulin transporter at the blood-brain barrier.Aging pathobiology and therapeutics · 2022Article
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundThe hormone leptin exerts its function in the brain to reduce food intake and increase energy expenditure to prevent obesity. However, most obese subjects reflect the resistance to leptin even with elevated serum leptin. Considering that leptin must cross the blood-brain barrier (BBB) in several regions to enter the brain parenchyma, altered leptin transport through the BBB might play an important role in leptin resistance and other biological conditions. Here, we report the use of a human induced pluripotent stem cell (iPSC)-derived BBB model to explore mechanisms that influence leptin transport.
methodsiPSCs were differentiated into brain microvascular endothelial cell (BMEC)-like cells using standard methods. BMEC-like cells were cultured in Transwell filters, treated with ligands from a nuclear receptor agonist library, and assayed for leptin transport using an enzyme-linked immune sorbent assay. RNA sequencing was further used to identify differentially regulated genes and pathways. The role of a select hit in leptin transport was tested with the competitive substrate assay and after gene knockdown using CRISPR techniques.
resultsFollowing a screen of 73 compounds, 17β-estradiol was identified as a compound that could significantly increase leptin transport. RNA sequencing revealed many differentially expressed transmembrane transporters after 17β-estradiol treatment. Of these, cationic amino acid transporter-1 (CAT-1, encoded by SLC7A1) was selected for follow-up analyses due to its high and selective expression in BMECs in vivo. Treatment of BMEC-like cells with CAT-1 substrates, as well as knockdown of CAT-1 expression via CRISPR-mediated epigenome editing, yielded significant increases in leptin transport.
conclusionsA major female sex hormone, as well as an amino acid transporter, were revealed as regulators of leptin BBB transport in the iPSC-derived BBB model. Outcomes from this work provide insights into regulation of hormone transport across the BBB.
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