A novel peroxisome proliferator-activated gamma (PPAR gamma) agonist, CLX-0921, has potent antihyperglycemic activity with low adipogenic potential.
Agonists of the nuclear receptor peroxisome proliferator-activated receptor gamma (PPAR gamma) are pharmacologically active antihyperglycemic agents that act by increasing peripheral tissue sensitivity to insulin. Many of these agonists have antihyperglycemic activity that is directly proportional to their ability to bind and activate PPAR gamma; however, recent data bring this relationship into question. In this report we describe a new PPAR gamma agonist, CLX-0921, that is derived from a natural product. This thiazolidinedione (TZD) has a spectrum of activity that differs from commercially available TZDs. It is a weak activator of PPAR gamma (EC(50) of 0.284 micromol/L) compared to rosiglitazone (EC(50) 0.009 micromol/L). Despite this difference, the drug maintains potent glucose uptake activity in vitro and glucose-lowering activity in vivo that is equipotent to that of rosiglitazone. Moreover, CLX-0921 showed a 10-fold reduction in in vitro adipogenic potential compared to rosiglitazone. CLX-0921 also increases glycogen synthesis, an activity not typically associated with rosiglitazone or pioglitazone. Thus CLX-0921 appears to have a distinct spectrum of activity relative to other TZDs.
Dey
Debendranath
D
Department of Biochemistry, Clinical Development, and Research Development, Calyx Therapeutics Inc. Hayward, CA 94085, USA.
Medicherla
Satya
S
Neogi
Partha
P
Gowri
Maya
M
Cheng
Jin
J
Gross
Coleman
C
Sharma
Somesh D
SD
Reaven
Gerald M
GM
Nag
Bishwajit
B
D016475:3T3 Cells; D017667:Adipocytes / Q000187:drug effects / Q000378:metabolism; D000273:Adipose Tissue / Q000187:drug effects / Q000254:growth & development*; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D002478:Cells, Cultured; D003920:Diabetes Mellitus / Q000235:genetics / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D006003:Glycogen / Q000096:biosynthesis; D006801:Humans; D007004:Hypoglycemic Agents / Q000494:pharmacology*; D007328:Insulin / Q000097:blood; D051379:Mice; D008810:Mice, Inbred C57BL; D008820:Mice, Obese; D011869:Radioligand Assay; D051381:Rats; D011924:Rats, Zucker; D018160:Receptors, Cytoplasmic and Nuclear / Q000819:agonists*; D000077154:Rosiglitazone; D013844:Thiazoles / Q000494:pharmacology*; D045162:Thiazolidinediones; D014157:Transcription Factors / Q000819:agonists*; D015533:Transcriptional Activation; D014162:Transfection
D001786:Blood Glucose; D007004:Hypoglycemic Agents; D007328:Insulin; D018160:Receptors, Cytoplasmic and Nuclear; D013844:Thiazoles; D045162:Thiazolidinediones; D014157:Transcription Factors; D000077154:Rosiglitazone; C477418:CLX-0921; D006003:Glycogen