Abstract
We report the discovery and initial characterization of a novel class of selective NPFF2 agonists. HTS screening using R-SAT, a whole cell based functional assay, identified a class of aryliminoguanidines as NPFF1 and NPFF2 ligands. Subsequent optimization led to molecules exhibiting selective NPFF2 agonistic activity. Systemic administration showed that selective NPFF2 agonists (1 and 3) are active in various pain models in vivo, whereas administration of a nonselective NPFF1 and NPFF2 agonist (9) increases sensitivity to noxious and non-noxious stimuli.
MeSH terms
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Analgesics / chemical synthesis*
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Analgesics / chemistry
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Analgesics / pharmacology
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Animals
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Carrageenan
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Guanidines / chemical synthesis*
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Guanidines / chemistry
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Guanidines / pharmacology
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Humans
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In Vitro Techniques
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Inflammation / chemically induced
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Inflammation / drug therapy
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Inflammation / physiopathology
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Microsomes, Liver / metabolism
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Pain / chemically induced
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Pain / drug therapy
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Pain / physiopathology
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Pain Measurement
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Peripheral Nervous System Diseases / drug therapy
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Peripheral Nervous System Diseases / physiopathology
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Rats
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Receptors, Neuropeptide / agonists*
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Receptors, Neuropeptide / antagonists & inhibitors
Substances
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Analgesics
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Guanidines
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Receptors, Neuropeptide
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neuropeptide FF receptor
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Carrageenan