ArticlePflugers Archiv : European journal of physiology2015
Differential cellular expression of organic anion transporting peptides OATP1A2 and OATP2B1 in the human retina and brain: implications for carrier-mediated transport of neuropeptides and neurosteriods in the CNS.
Article in Pflugers Archiv : European journal of physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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41 citing papers in PubMed, 94 citations in OpenAlex.
- The role of prostanoids in the retina and optic nerve in health and disease.Progress in retinal and eye research · 2026Review
- Pregnanolone Glutamate: A Dual-Fate Delivery System for Neuroactive Steroids in Perinatal Focal Cerebral Ischemia.International journal of molecular sciences · 2026Article
- A stimuli-responsive mitochondria-targeted nanoplatform for glioblastoma therapy: modulating the blood-brain barrier and delivering precise chemotherapy.Journal of nanobiotechnology · 2026Article
- Targeted and Untargeted Proteomics-based Comparison of Adenoviral Infected hCMEC/D3 and hBMEC as a Human Brain Endothelial Cells to Study the OATP2B1 Transporter.Molecular neurobiology · 2025Article
- Proteome profile differences among human, monkey, and mouse brain microvessels and cultured brain microvascular endothelial cells.Fluids and barriers of the CNS · 2025Article
- Atherosclerosis enhances the efficacy of liposome-encapsulated bromocriptine in reducing the incidence of prolactinemia in pituitary tumors.Journal of nanobiotechnology · 2025Article
- Organic anion transporting polypeptides: Pharmacology, toxicology, structure, and transport mechanisms.Pharmacological reviews · 2025Review
- Computational Modeling of Pharmaceuticals with an Emphasis on Crossing the Blood-Brain Barrier.Pharmaceuticals (Basel, Switzerland) · 2025Review
- Molecular determinants of neuroprotection in blood-brain interfaces of the cynomolgus monkey.Frontiers in pharmacology · 2025Article
- Transporter Protein Expression of Corneal Epithelium in Rabbit and Porcine: Evaluation of Models for Ocular Drug Transport Study.Molecular pharmaceutics · 2024Article
- Drugs in Human Milk Part 1: Practical and Analytical Considerations in Measuring Drugs and Metabolites in Human Milk.Clinical pharmacokinetics · 2024Review
- The macrocycle inhibitor landscape of SLC-transporter.Molecular informatics · 2024Article
- Dissimilar Effect of P-Glycoprotein and Breast Cancer Resistance Protein Inhibition on the Distribution of Erlotinib to the Retina and Brain in Humans and Mice.Molecular pharmaceutics · 2023Article
- Metabolite Profiling of the Gut-Renal-Cerebral Axis Reveals a Particular Pattern in Early Diabetic Kidney Disease in T2DM Patients.International journal of molecular sciences · 2023Article
- Maternal and Fetal Expression of ATP-Binding Cassette and Solute Carrier Transporters Involved in the Brain Disposition of Drugs.Advances in experimental medicine and biology · 2023Article
- Transport Mechanisms at the Blood-Brain Barrier and in Cellular Compartments of the Neurovascular Unit: Focus on CNS Delivery of Small Molecule Drugs.Pharmaceutics · 2022Review
- Pharmacoproteomics of Brain Barrier Transporters and Substrate Design for the Brain Targeted Drug Delivery.Pharmaceutical research · 2022Review
- Increased/Targeted Brain (Pro)Drug Delivery via Utilization of Solute Carriers (SLCs).Pharmaceutics · 2022Review
- Cloning and characterization of a novel functional organic anion transporting polypeptide 3A1 isoform highly expressed in the human brain and testis.Frontiers in pharmacology · 2022Article
- Characterization of the blood-brain barrier in genetically diverse laboratory mouse strains.Fluids and barriers of the CNS · 2021Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Organic anion transporting polypeptides (OATPs) are polyspecific organic anion transporters, which are expressed in the blood-brain barrier, the choroid plexus, and other organs. The physiologic function of OATPs in extrahepatic tissues remains ambiguous. In rat retina, members of the OATP family are expressed. We therefore investigated the human retina for the expression of OATP1A2 and OATP2B1 and extended the study to human brain. Furthermore, we searched for peptide neurotransmitters as novel OATP substrates. OATP1A2 displayed a broad expression pattern in human retina as assessed by immunofluorescence localization. It is expressed in photoreceptor bodies and somas of amacrine cells. OATP1B2 expression is restricted to the inner nuclear layer and to the inner plexiform layer. Using paraffin sections from human cortex, cerebellum, and hippocampus, OATP1A2 was localized to neurons and neuronal processes, while OATP2B1 is expressed in endothelial cells of brain capillaries. Substance P and vasoactive intestinal peptide were identified as substrates for OATP1A2 and OATP2B1. Double-labeling immunofluorescence of human retina demonstrated the presence of substance P and of vasoactive intestinal peptides in neurons expressing OATP1A2 and OATP2B1, respectively. The expression of OATP1A2 and OATP2B1 in retinal neurons implies a role of these transporters in the reuptake of peptide neurotransmitters released from retinal neurons. The abundant expression of OATP1A2 in brain neurons points to the possibility that OATP1A2 could be involved in the homeostasis of neurosteroids. The high expression of OATP2B1 in brain capillaries supports an important function of OATPs in substance penetration across the blood-brain barrier.
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