Bromosporine
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MedKoo CAT#: 406459

CAS#: 1619994-69-2

Description: Bromosporine is a broad spectrum inhibitor for bromodomains and as such will be very useful in elucidating further biological roles of reader domains as well as a tool for the validation of functional assays. Proteins that contain BRDs have been implicated in the development of a large variety of diseases, including various cancers, inflammatory diseases and neurological diseases and the therapeutic potential of bromodomain inhibition has been shown in several of these diseases, such as HIV, cancer and inflammation.


Chemical Structure

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Bromosporine
CAS# 1619994-69-2

Theoretical Analysis

MedKoo Cat#: 406459
Name: Bromosporine
CAS#: 1619994-69-2
Chemical Formula: C17H20N6O4S
Exact Mass: 404.12667
Molecular Weight: 404.4435
Elemental Analysis: C, 50.48; H, 4.98; N, 20.78; O, 15.82; S, 7.93

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5.0mg USD 150.0 Same day
10.0mg USD 190.0 Same day
25.0mg USD 350.0 Same day
50.0mg USD 550.0 Same day
100.0mg USD 850.0 Same day
200.0mg USD 1250.0 Same day
500.0mg USD 1750.0 Same day
1.0g USD 2450.0 Same day
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Synonym: Bromosporine

IUPAC/Chemical Name: ethyl (3-methyl-6-(4-methyl-3-(methylsulfonamido)phenyl)-[1,2,4]triazolo[4,3-b]pyridazin-8-yl)carbamate

InChi Key: UYBRROMMFMPJAN-UHFFFAOYSA-N

InChi Code: InChI=1S/C17H20N6O4S/c1-5-27-17(24)18-15-9-14(21-23-11(3)19-20-16(15)23)12-7-6-10(2)13(8-12)22-28(4,25)26/h6-9,22H,5H2,1-4H3,(H,18,24)

SMILES Code: O=C(OCC)NC1=CC(C2=CC=C(C)C(NS(=O)(C)=O)=C2)=NN3C1=NN=C3C

Appearance: white solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Biological target: Bromosporine is a broad spectrum inhibitor for bromodomains with IC50 of 0.41 μM, 0.29 μM, 0.122 μM and 0.017 μM for BRD2, BRD4, BRD9 and CECR2, respectively.
In vitro activity: After treating with 2.5 μM bromosporine for 72h, the percentage of GFP-expressing cells was measured by flow cytometry, which represented the expression of HIV-1 LTR-driven GFP. The percentage of GFP-positive cells increased to 85.6% as compared to mock treatment (Figure 1B). In addition, dose- and time-dependent effects of bromosporine on HIV-1 reactivation were also observed in C11 cells (Figure 1C and 1D) (Supplementary Figure 1). As shown in Figure 1C, the percentage of GFP-positive cells dramatically raised from 6.88% to 87.7% as the concentration of bromosporine increased from 0.1 μM to 2.5 μM. And as shown in Figure Figure1D, after C11 cells were treated with 2.5 μM bromosporine, the percentage of GFP-positive cells increased as a function of time. Reference: Oncotarget. 2017 Nov 7; 8(55): 94104–94116. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5706859/
In vivo activity: Following the in vitro effect of 5-FU with bromosporine, the effect of the drugs together as well as individual exposures were studied in the mouse model administered the drugs as described in the materials section. The combinatorial approach was found to inhibit the tumor growth of the HCT116 xenograft against individual drugs (Fig. 4A). This was further confirmed by data from body weight with an absence of higher toxicity (Fig. 4B). Tumor protein analysis revealed that cleaved caspase 3 was significantly increased in combination treatment group (Fig. 4C). These findings show that the synergistic action of the drug combination of bromosporine with 5-FU in vivo. Reference: Biochem Biophys Res Commun. 2020 Jan 22;521(4):840-845. https://pubmed.ncbi.nlm.nih.gov/31708100/

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMSO 41.04 101.47
DMSO:PBS (pH 7.2) (1:1) 0.5 1.24
DMF 30.0 74.18
Ethanol 0.25 0.62

Preparing Stock Solutions

The following data is based on the product molecular weight 404.4435 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol: 1. Cheng X, Huang Z, Long D, Jin W. BET inhibitor bromosporine enhances 5-FU effect in colorectal cancer cells. Biochem Biophys Res Commun. 2020 Jan 22;521(4):840-845. doi: 10.1016/j.bbrc.2019.11.009. Epub 2019 Nov 7. PMID: 31708100. 2. Pan H, Lu P, Shen Y, Wang Y, Jiang Z, Yang X, Zhong Y, Yang H, Khan IU, Zhou M, Li B, Zhang Z, Xu J, Lu H, Zhu H. The bromodomain and extraterminal domain inhibitor bromosporine synergistically reactivates latent HIV-1 in latently infected cells. Oncotarget. 2017 Oct 6;8(55):94104-94116. doi: 10.18632/oncotarget.21585. PMID: 29212213; PMCID: PMC5706859.
In vitro protocol: 1. Cheng X, Huang Z, Long D, Jin W. BET inhibitor bromosporine enhances 5-FU effect in colorectal cancer cells. Biochem Biophys Res Commun. 2020 Jan 22;521(4):840-845. doi: 10.1016/j.bbrc.2019.11.009. Epub 2019 Nov 7. PMID: 31708100. 2. Pan H, Lu P, Shen Y, Wang Y, Jiang Z, Yang X, Zhong Y, Yang H, Khan IU, Zhou M, Li B, Zhang Z, Xu J, Lu H, Zhu H. The bromodomain and extraterminal domain inhibitor bromosporine synergistically reactivates latent HIV-1 in latently infected cells. Oncotarget. 2017 Oct 6;8(55):94104-94116. doi: 10.18632/oncotarget.21585. PMID: 29212213; PMCID: PMC5706859.
In vivo protocol: 1. Cheng X, Huang Z, Long D, Jin W. BET inhibitor bromosporine enhances 5-FU effect in colorectal cancer cells. Biochem Biophys Res Commun. 2020 Jan 22;521(4):840-845. doi: 10.1016/j.bbrc.2019.11.009. Epub 2019 Nov 7. PMID: 31708100.

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