Many of the effects of prostaglandin D2 (PGD2) are transduced via a traditional 7-transmembrane GPCR, the DP1 receptor.{3128} However, in certain leukocytes and other immune cells, a second PGD2 receptor referred to as the CRTH2 or DP2 receptor has been cloned and characterized.{9767,9769} 15(R)-15-methyl PGD2 is a surprisingly potent agonist at the DP2 receptor, being about 5 times more potent than PGD2 itself.{10723} 15(R)-PGD2 has the potential to be produced endogenously as a natural ligand for DP2, unlike the synthetic 15-methyl analogs. In preliminary reports, 15(R)-PGD2 has also been reported to be a potent and selective DP2 receptor agonist.{11220,14546}
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A potent and selective CRTH2/DP2 receptor agonist, that is equipotent with PGD2 at this receptor
Formal name: 9α,15R-dihydroxy-11-oxo-prosta-5Z,13E-dien-1-oic acid
Synonyms: 15(R)-PGD2
Molecular weight: 352.5
CAS: 59894-05-2
Purity: ≥98%
Formulation: A solution in methyl acetate
Product Type|Biochemicals|Lipids|Prostaglandins||Product Type|Biochemicals|Receptor Pharmacology|Agonists||Research Area|Lipid Biochemistry|Cyclooxygenase Pathway
The maintenance of embryonic stem cells in culture typically requires feeder cells and various exogenous factors found in serum. Murine embryonic stem (mES) cells can be maintained in the absence of feeder cells and serum but require the leukemia inhibitor factor (LIF) and bone morphogenic protein (BMP) to prevent differentiation and promote self-renewal. SC-1 is a small molecule activator of stem cell renewal that allows the propagation of OG2 mES cells for at least 10 passages in an undifferentiated state.{14533} The activity of SC-1 is mediated by the combined inhibition of RasGAP and ERK1 with Kd values of 98 and 212 nM, respectively.{14533} Inhibition of RasGAP increases Ras signaling via the PI3-kinase pathway which promotes self-renewal, whereas inhibition of ERK blocks differentiation.
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1,2-Dipalmitoyl-sn-glycero-3-PC (DPPC) is a zwitterionic glycerophospholipid commonly used in the formation of lipid monolayers, bilayers, and liposomes for use in a variety of applications.{14480,24261,14478,14479} It has been used in the formation of proteoliposomes for implantation of γ-glutamyl transpeptidase into human erythrocyte membranes.{14478} Incorporation of glycosphingolipid antigens into DPPC-containing liposomes increases the immunogenicity of the antigens in mice.{14479}
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1,2-Dipalmitoyl-sn-glycero-3-PC (DPPC) is a zwitterionic glycerophospholipid commonly used in the formation of lipid monolayers, bilayers, and liposomes for use in a variety of applications.{14480,24261,14478,14479} It has been used in the formation of proteoliposomes for implantation of γ-glutamyl transpeptidase into human erythrocyte membranes.{14478} Incorporation of glycosphingolipid antigens into DPPC-containing liposomes increases the immunogenicity of the antigens in mice.{14479}
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The tetracycline repressor (TetR) is a transcriptional regulator which normally binds tightly to its palindromic tetO operator DNA, blocking gene expression.{17508} Tet causes the repressor to dissociate from the DNA, allowing transcription to occur. A novel reverse TetR (revTetR) requires tetracycline as a co-repressor to bind tetO and block transcription.{17509,17510} Anhydrotetracycline (hydrochloride) is a powerful effector in both the tetracycline repressor (TetR) and reverse TetR (revTetR) systems, binding the Tet repressor 35-fold more strongly than Tet.{17508,17511} Moreover, anhydrotetracycline poorly binds the 30S ribosomal subunit, compared to Tet,{17512} so it does not act as a general inhibitor of translation and is a poor antibiotic. Perhaps related to this, the concentration of anhydrotetracycline that inhibits eukaryotic cell growth is more than a 1,000-fold above the dose that alters transcription through TetR.{17508}
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