Abstract
Inhibition of the sodium-coupled citrate transporter (NaCT or SLC13A5) has been proposed as a new therapeutic approach for prevention and treatment of metabolic diseases. In a previous report, we discovered dicarboxylate 1a (PF-06649298) which inhibits the transport of citrate in in vitro and in vivo settings via a specific interaction with NaCT. Herein, we report the optimization of this series leading to 4a (PF-06761281), a more potent inhibitor with suitable in vivo pharmacokinetic profile for assessment of in vivo pharmacodynamics. Compound 4a was used to demonstrate dose-dependent inhibition of radioactive [(14)C]citrate uptake in liver and kidney in vivo, resulting in modest reductions in plasma glucose concentrations.
MeSH terms
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Animals
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Biological Transport / drug effects
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Blood Glucose / metabolism
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Citrates / metabolism*
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Citrates / pharmacokinetics
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Dose-Response Relationship, Drug
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HEK293 Cells
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Hepatocytes / drug effects
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Humans
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Kidney / drug effects
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Kidney / metabolism
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Liver / drug effects
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Liver / metabolism
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Malates / administration & dosage
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Malates / chemistry*
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Malates / pharmacology*
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Male
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Mice
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Mice, Inbred C57BL
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Mice, Obese
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Molecular Structure
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Phenylbutyrates / administration & dosage
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Phenylbutyrates / chemistry*
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Phenylbutyrates / pharmacology*
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Pyridines / administration & dosage
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Pyridines / chemistry*
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Pyridines / pharmacology*
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Rats
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Rats, Sprague-Dawley
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Structure-Activity Relationship
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Symporters / antagonists & inhibitors*
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Symporters / metabolism
Substances
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Blood Glucose
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Citrates
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Malates
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PF-06649298
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PF-06761281
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Phenylbutyrates
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Pyridines
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SLC13A5 protein, human
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Symporters