StemRegenin 1 (SR1)

Catalog No.S2858

For research use only.

StemRegenin 1 (SR1) is an aryl hydrocarbon receptor (AhR) inhibitor with IC50 of 127 nM in a cell-free assay.

StemRegenin 1 (SR1) Chemical Structure

CAS No. 1227633-49-9

Selleck's StemRegenin 1 (SR1) has been cited by 25 publications

Purity & Quality Control

Choose Selective AhR Inhibitors

Biological Activity

Description StemRegenin 1 (SR1) is an aryl hydrocarbon receptor (AhR) inhibitor with IC50 of 127 nM in a cell-free assay.
Targets
Aryl hydrocarbon receptor (AhR) [1]
(Cell-free assay)
127 nM
In vitro

StemRegenin 1 increases the number of CD34+ cells after 5 to 7 days with an EC50 of 120 nM. Culture of mPB CD34+ cells with cytokines plus SR1 (1 μM) for 7 days increases the number of CD34+, CD133+, and CD90+ hematopoietic stem and progenitor cell populations 2.6-, 2.3-, and 10-fold, respectively compared to control cells. Continued culture with SR1 (1 μM) for 3 weeks leads to an 11-fold increase in total nucleated cells (TNC), a 73-fold increase in CD34+ cells as compared to control cultures, and a 1118-fold increase in CD34+ cells relative to input cells. Culture of 1×103 cord blood CD34+ cells for 5 weeks with SR1 (1 μM) results in the production of 1.69×106 colony forming cells. SR1-induces CD34+ cell expansion acts by binding and antagonizing AhR as evident by decreased CYP1B1 and AHRR mRNA levels. [1] SR1 (1 μM) treatment accelerates the proliferation of CD34+ cells and decreased the expression levels of VentX in human CD34+ cells. Ectopic expression of VentX prevents SR1-induced expansion of CD34+ cells. [2] Sequential coculture with bone morphogenetic protein 4 (20 ng/mL), PGE2 (2 μM), and SR1 (0.75 μM) lead to robust Macaca nemestrina iPSC hematopoietic progenitor cell formation. CD34(+)CD38(-)Thy1(+)CD45RA(-)CD49f(+) cells isolated on the basis of CD34 expression and cultured in SR1 (0.75 μM) expands 3-fold and maintained this long-term repopulating HSC phenotype. [3]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
CD34+ NFjNTXpHfW6ldHnvckBie3OjeR?= M4DkT2V5KH[rdn:g[Zhx[W6|aX;uJI9nKGi3bXHuJGNFOzRtIHPlcIx{KGG|c3Xzd4VlKGG|IHnuZ5Jm[XOnIHnuJGNFOzRtIHPlcIwhdGW4ZXygZYZ1\XJiNTD0c{A4KGSjeYOgZpkh[2:wZn;jZYwhdWmlcn;zZ49xgSxiRVO1NF0xNjF{zszN MnLTQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOzFyM{WyN|koRjNzMEO1NlM6RC:jPh?=
DAOY MYXxTHRUKGG|c3H5 MmnTdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohWHKrbXHyfUB{[3KnZX6g[o9zKESDT2mgZ4VtdHN? NXrlSoc2RGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
A673 MYfxTHRUKGG|c3H5 NFfQOHNyUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCScnntZZJ6KHOlcnXlckBnd3JiQU[3N{Bk\Wyucx?= NHP0UnE9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
SK-N-MC NGXCZ5ZyUFSVIHHzd4F6 NWTVXWk6eUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiUILpcYFzgSC|Y4Ll[Y4h\m:{IGPLMW4uVUNiY3XscJM> NET1c|Q9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
Saos-2 M4e0RZFJXFNiYYPzZZk> M3PuZ5FJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCVYX;zMVIh[2WubIO= MkDPQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
SK-N-SH NYfjTVlQeUiWUzDhd5NigQ>? NXzZc2ZUeUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiUILpcYFzgSC|Y4Ll[Y4h\m:{IGPLMW4uW0hiY3XscJM> NVLyXZlLRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
NB1643 MlyydWhVWyCjc4PhfS=> MmTpdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohWHKrbXHyfUB{[3KnZX6g[o9zKE6EMU[0N{Bk\Wyucx?= MWO8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zQTR|NUGzPUc,Ojl2M{WxN|k9N2F-
RD NXi2[XJDeUiWUzDhd5NigQ>? NGX4UXdyUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCScnntZZJ6KHOlcnXlckBnd3JiUlSgZ4VtdHN? NF\mOIw9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
MG 63 (6-TG R) NFjnbIhyUFSVIHHzd4F6 NWrObllueUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiUILpcYFzgSC|Y4Ll[Y4h\m:{IF3HJFY{KCh4LWTHJHIqKGOnbHzz NYCy[npNRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
Rh30 MYrxTHRUKGG|c3H5 NHPJSlByUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCScnntZZJ6KHOlcnXlckBnd3JiUnizNEBk\Wyucx?= M16yfVxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
Rh41 NY\BZY9qeUiWUzDhd5NigQ>? M4PFUJFJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCUaESxJINmdGy| NHf6NIY9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
In vivo SR1 promotes expansion of CB CD34+ cells that contribute to both early and sustained engraftment NOD.Cg-Prkdcscid Il2rgtm1Wjl/SzJ (NSG) mice. [1]

Protocol (from reference)

Solubility (25°C)

In vitro

DMSO 86 mg/mL
(200.21 mM)
Water Insoluble
Ethanol Insoluble

Chemical Information

Molecular Weight 429.54
Formula

C24H23N5OS

CAS No. 1227633-49-9
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC(C)N1C=NC2=C(N=C(N=C21)C3=CSC4=CC=CC=C43)NCCC5=CC=C(C=C5)O

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.

Molarity Calculator

Mass Concentration Volume Molecular Weight

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 StemRegenin 1 (SR1) | StemRegenin 1 (SR1) supplier | purchase StemRegenin 1 (SR1) | StemRegenin 1 (SR1) cost | StemRegenin 1 (SR1) manufacturer | order StemRegenin 1 (SR1) | StemRegenin 1 (SR1) distributor