Home Epigenetics Histone Methyltransferase antagonist UNC3866 For research use only.

UNC3866

UNC3866 is a potent antagonist of the methyllysine (Kme) reading function of the Polycomb CBX and CDY families of chromodomains. UNC3866 binds the chromodomains of CBX4 and CBX7 most potently, with a K(d) of ∼100 nM for each, and is 6- to 18-fold selective as compared to seven other CBX and CDY chromodomains.

UNC3866 Chemical Structure

UNC3866 Chemical Structure

CAS No. 1872382-47-2

Purity & Quality Control

UNC3866 Related Products

Signaling Pathway

Histone Methyltransferase Signaling Pathways

Histone Methyltransferase Signaling Pathway

Biological Activity

Description UNC3866 is a potent antagonist of the methyllysine (Kme) reading function of the Polycomb CBX and CDY families of chromodomains. UNC3866 binds the chromodomains of CBX4 and CBX7 most potently, with a K(d) of ∼100 nM for each, and is 6- to 18-fold selective as compared to seven other CBX and CDY chromodomains.
Targets
PRC1 chromodomains [1] CBX4 chromodomains [1] CBX7 chromodomains [1]
94 nM(Kd) 97 nM(Kd)
In vitro
In vitro UNC3866 is a potent antagonist of the CBX7-H3 interaction(IC50 = 66±1.2 nM). The affinity of UNC3866 for CBX2, -4, -6 and -8 is also surprisingly well correlated with the percent sequence identity of each chromodomain relative to that of CBX7. UNC3866 is equipotent for CBX4, which is most similar to CBX7, while it is 18-, 6- and 12-fold selective for CBX4/7 over CBX2, -6 and -8, respectively. Additionally, UNC3866 is 65-fold selective for CBX4/7 over CDY1 and 9-fold selective for CBX4/7 over CDYL1b and CDYL2. UNC3866 antagonizes PRC1 chromodomains in cells. Thought the permeability of UNC3866 is low, it is sufficiently cell permeable and stable to evaluate its ability to engage and antagonize the functions of its chromodomain targets in cells. UNC3866 inhibits PC3 cell proliferation [1].
Cell Research Cell lines PC3 cells
Concentrations 30 μM
Incubation Time 24 hours
Method

PC3 cells are seeded at 200 cells/well into 24-well plates. Cells are allowed to adhere overnight. The media (DMEM supplemented with 10 % FBS) is then exchanged with fresh media containing DMSO, UNC3866 or UNC4219. On day three, the media are exchanged with fresh media containing DMSO, UNC3866 or UNC4219. For dose-response studies, the EC50 is derived from a six-point titration ranging from 100 μM to 0.4 μM of UNC3866 or UNC4219. At day 0, 3 or 6, cells are fixed with ice-cold methanol for 30 sec. and rehydrated with PBS. Nuclei of the cells are stained with DAPI (0.05 μg/ml) and numerated using High Content Microscopy. For dose-response studies, the cell count of UNC3866- or UNC4219-treated cells is normalized to the average cell count of DMSO-treated cells. The EC50 is calculated using the "log[inhibitor] vs. the normalized response -- Variable slope" equation in GraphPad Prism 5.
In Vivo
In vivo UNC3866 is the predominant species in plasma at all time points tested relative to UNC4007 and shows 25% bioavailability and moderate clearance. While these PK results are promising for a peptidic compound, the use of UNC3866 in vivo may be limited because of the high circulating levels required for intracellular target engagement due to its poor cell permeability. The potential utility of UNC3866 at higher doses for in vivo experiments is currently under investigation[1].
Animal Research Animal Models swiss albino mice
Dosages 10 mg/kg
Administration i.p.

Chemical Information & Solubility

Molecular Weight 795.02 Formula

C43H66N6O8
CAS No. 1872382-47-2 SDF Download UNC3866 SDF
Smiles CCN(CC)CCCCC(C(=O)NC(CO)C(=O)OC)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CC1=CC=CC=C1)NC(=O)C2=CC=C(C=C2)C(C)(C)C
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 100 mg/mL ( (125.78 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble


Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.


In vivo Formulation Calculator

Preparing Stock Solutions

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O
%DMSO %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

Tel: +1-832-582-8158 Ext:3
If you have any other enquiries, please leave a message.

* Indicates a Required Field

Please enter your name.
Please enter your email. Please enter a valid email address.
Please write something to us.
Tags: buy UNC3866 | UNC3866 supplier | purchase UNC3866 | UNC3866 cost | UNC3866 manufacturer | order UNC3866 | UNC3866 distributor