(Z)-Guggulsterone is a plant steroid found in the resin of the guggul plant Commiphora mukul that acts as a selective antagonist of farnesoid X receptor (FXR; Cui et al.). It decreases chenodeoxycholic acid-induced FXR activation (IC₅₀ = 10 μM) in the presence of 100 μM chenodeoxycholic acid (Cui et al.; Urizar et al.).
DIFFERENTIATION
· Induces differentiation of human pluripotent stem cell-derived neural stem cells into dopaminergic neurons (Gonzalez et al.).
METABOLISM
· Decreases hepatic low-density lipoprotein cholesterol and triglyceride levels in rodents fed with a high-cholesterol diet (Urizar et al.).
CANCER RESEARCH
· Regulates growth and metastasis of tumor cells in human multiple myeloma cells by the expression of STAT3-regulated antiapoptotic (Bcl-2, Bcl-xL, and Mcl-1), proliferative (cyclin D1), and angiogenic (VEGF) gene products (Ahn et al.).
· Inhibits tube formation in human umbilical vein endothelial cells (HUVECs) and migration in HUVECs or a human prostate cancer cell line (Xiao et al.).
DIFFERENTIATION
· Induces differentiation of human pluripotent stem cell-derived neural stem cells into dopaminergic neurons (Gonzalez et al.).
METABOLISM
· Decreases hepatic low-density lipoprotein cholesterol and triglyceride levels in rodents fed with a high-cholesterol diet (Urizar et al.).
CANCER RESEARCH
· Regulates growth and metastasis of tumor cells in human multiple myeloma cells by the expression of STAT3-regulated antiapoptotic (Bcl-2, Bcl-xL, and Mcl-1), proliferative (cyclin D1), and angiogenic (VEGF) gene products (Ahn et al.).
· Inhibits tube formation in human umbilical vein endothelial cells (HUVECs) and migration in HUVECs or a human prostate cancer cell line (Xiao et al.).
未找到
Protocols and Documentation
Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.
未找到
Resources and Publications
Publications (5)
Deriving dopaminergic neurons for clinical use. A practical approach. Scientific reports 2013 JAN
Abstract
New small molecules that regulate the step-wise differentiation of human pluripotent stem cells into dopaminergic neurons have been identified. The steroid, guggulsterone, was found to be the most effective inducer of neural stem cells into dopaminergic neurons. These neurons are extensively characterized and shown to be functional. We believe this new approach offers a practical route to creating neurons of sufficient quality to be used to treat Parkinson's disease patients.
Guggulsterone, a farnesoid X receptor antagonist, inhibits constitutive and inducible STAT3 activation through induction of a protein tyrosine phosphatase SHP-1. Cancer research 2008 jun
Abstract
Signal transducers and activator of transcription 3 (STAT3) is a transcription factor that has been associated with survival, proliferation, chemoresistance, and angiogenesis of tumor cells. Whether the apoptotic, antiproliferative, and antimetastatic effects of guggulsterone (GS), a farnesoid X receptor antagonist, are linked to its ability to suppress STAT3 activation was investigated. We found that the Z but not the E stereoisomer of GS inhibited both constitutive and interleukin-6-induced STAT3 activation in human multiple myeloma cells. The suppression of STAT3 was mediated through the inhibition of activation of protein tyrosine kinases Janus-activated kinase 2 and c-Src. Vanadate treatment reversed the GS-induced down-regulation of STAT3, suggesting the involvement of a protein tyrosine phosphatase. Indeed, we found that GS induced the expression of both the protein and mRNA for tyrosine protein phosphatase SHP-1 that was not due to demethylation of the SHP-1 promoter previously implicated in the epigenetic silencing of SHP-1. Moreover, knockdown of SHP-1 by small interfering RNA suppressed the effect of GS on induction of SHP-1 and on the inhibition of STAT3 activation, thereby implicating SHP-1 in the action of GS. Finally, GS down-regulated the expression of STAT3-regulated antiapoptotic (Bcl-2, Bcl-xL, and Mcl-1), proliferative (cyclin D1), and angiogenic (VEGF) gene products; and this correlated with suppression of proliferation, the accumulation of cells in sub-G(1) phase of cell cycle, and induction of apoptosis. Overall, these results suggest that GS is a novel blocker of STAT3 activation and thus may have a potential in regulation of growth and metastasis of tumor cells.
z-Guggulsterone, a constituent of Ayurvedic medicinal plant Commiphora mukul, inhibits angiogenesis in vitro and in vivo. Molecular cancer therapeutics 2008 jan
Abstract
Our previous studies have shown that z-guggulsterone, a constituent of Indian Ayurvedic medicinal plant Commiphora mukul, inhibits the growth of human prostate cancer cells by causing apoptosis. We now report a novel response to z-guggulsterone involving the inhibition of angiogenesis in vitro and in vivo. The z-guggulsterone treatment inhibited capillary-like tube formation (in vitro neovascularization) by human umbilical vein endothelial cells (HUVEC) and migration by HUVEC and DU145 human prostate cancer cells in a concentration- and time-dependent manner. The z- and E-isomers of guggulsterone seemed equipotent as inhibitors of HUVEC tube formation. The z-guggulsterone-mediated inhibition of angiogenesis in vitro correlated with the suppression of secretion of proangiogenic growth factors [e.g., vascular endothelial growth factor (VEGF) and granulocyte colony-stimulating factor], down-regulation of VEGF receptor 2 (VEGF-R2) protein level, and inactivation of Akt. The z-guggulsterone-mediated suppression of DU145 cell migration was increased by knockdown of VEGF-R2 protein level. Ectopic expression of constitutively active Akt in DU145 cells conferred protection against z-guggulsterone-mediated inhibition of cell migration. Oral gavage of 1 mg z-guggulsterone/d (five times/wk) to male nude mice inhibited in vivo angiogenesis in DU145-Matrigel plug assay as evidenced by a statistically significant decrease in tumor burden, microvessel area (staining for angiogenic markers factor VIII and CD31), and VEGF-R2 protein expression. In conclusion, the present study reveals that z-guggulsterone inhibits angiogenesis by suppressing the VEGF-VEGF-R2-Akt signaling axis. Together, our results provide compelling rationale for further preclinical and clinical investigation of z-guggulsterone for its efficacy against prostate cancer.
PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT STEMCELL, REFER TO WWW.STEMCELL.COM/COMPLIANCE.
