text: Niacin mediates lipolysis in adipose tissue through its G-protein coupled receptor HM74A.
  A G-protein coupled receptor to niacin (nicotinic acid) was identified recently but the physiological/pharmacological role of the receptor remains poorly defined. We present our studies to demonstrate that HM74A, but not HM74, binds niacin at high affinities and effectively mediates Gi signaling events in human embryonic kidney HEK293 cells as well as in 3T3L1 adipocytes expressing HM74A. Furthermore, HM74A, but not HM74, expressed in differentiated 3T3L1 adipocytes effectively mediated inhibition of lipolysis by niacin. Our results provided direct evidence indicating that HM74A, but not HM74, was sufficient to mediate anti-lipolytic effect of niacin in adipose tissue.
entities.id: T10 T11 T12 T13 T14 T15 T16 T1 T2 T3 T4 T5 T6 T7 T8 T9
entities.type: GENE-N GENE-N GENE-Y GENE-Y GENE-Y GENE-Y GENE-Y CHEMICAL CHEMICAL CHEMICAL CHEMICAL CHEMICAL CHEMICAL GENE-N GENE-N GENE-N
entities.text: Gi HM74A HM74A HM74 HM74A HM74 G-protein coupled receptor HM74A niacin niacin nicotinic acid niacin niacin Niacin HM74A HM74 G-protein coupled receptor