Biological descriptionSelective mGlu5 receptor agonist. Water soluble form available - see (ab120221)
Chemical name(R,S)-2-Amino-2-(2-chloro-5-hydroxyphenyl)acetic acid
Storage instructionsStore at +4°C. Store under Desiccating conditions. The product can be stored for up to 12 months.
Solubility overviewSoluble in 1 eq. NaOH to 100 mM
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use at an assay dependent concentration.
Functional Studies - (R,S)-CHPG (ab120039)
SK-N-SH cells were incubated at 37°C for 30 minutes with vehicle control (0 µM) and different concentrations of (R,S)-CHPG (ab120039). Increased expression of CREB (phospho S133) in SK-N-SH cells correlates with an increase in (R,S)-CHPG concentration, as described in literature.
Whole cell lysates were prepared with RIPA buffer (containing protease inhibitors and sodium orthovanadate), 20 µg of each were loaded on the gel and the WB was run under reducing conditions. After transfer the membrane was blocked for an hour using 3% milk before being incubated with ab32096 at 1/500 dilution and ab32515 at 1 µg/ml overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP (ab97051) at 1/10000 dilution and visualised using ECL development solution.
References for (R,S)-CHPG (ab120039)
This product has been referenced in:
Domenici MR et al. Chronic treatment with the mGlu5R antagonist MPEP reduces the functional effects of the mGlu5R agonist CHPG in the striatum of 6-hydroxydopamine-lesioned rats: possible relevance to the effects of mGlu5R blockade in Parkinson's disease. J Neurosci Res80:646-54 (2005).
Read more (PubMed: 15880742) »
Salt TE et al. Antagonism of the mGlu5 agonist 2-chloro-5-hydroxyphenylglycine by the novel selective mGlu5 antagonist 6-methyl-2-(phenylethynyl)-pyridine (MPEP) in the thalamus. Br J Pharmacol127:1057-9 (1999).
Read more (PubMed: 10455248) »
Doherty AJ et al. (RS)-2-chloro-5-hydroxyphenylglycine (CHPG) activates mGlu5, but no mGlu1, receptors expressed in CHO cells and potentiates NMDA responses in the hippocampus. Neuropharmacology36:265-7 (1997).
Read more (PubMed: 9144665) »