RRx-001

Catalog No.S8405

RRx-001 Chemical Structure

Molecular Weight(MW): 268.02

RRx-001 is a novel epigenetic modulator with potential radiosensitizing activity. It inhibits glucose 6-phosphate dehydrogenase(G6PD) in human tumor cells, binds hemoglobin and drives RBC-mediated redox reactions under hypoxia.

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Description RRx-001 is a novel epigenetic modulator with potential radiosensitizing activity. It inhibits glucose 6-phosphate dehydrogenase(G6PD) in human tumor cells, binds hemoglobin and drives RBC-mediated redox reactions under hypoxia.
Targets
G6PD [1]
()
Nrf2-ARE [3]
In vitro

RRx-001 exerts its anti-proliferative effect, at least partially, through interference with glucose 6 phosphate dehydrogenase (G6PD), a key enzyme in the pentose phosphate pathway, responsible for maintaining adequate levels of the major cellular reductant, NADPH. RRx-001 affects glucose and G6PD enzyme activity in three different cancer cell lines namely Hep G2, CACO-2, and HT-29. RRx-001 induced G6PD inhibition and increased glucose consumption in a concentration dependent fashion. RRx-001 induces p53 and PARP-1 via generation of ROS/RNS. It exerts anticancer activity, at least in part, by interfering with 3 crucial metabolic demands of rapidly proliferating cells: bioenergetics, macromolecular biosynthesis, and manipulation of cellular cytosolic redox homeostasis[1]. RRx-001 mediates nuclear translocation of Nrf2 and the activation of expression of its downstream enzymes HO-1 and NQO1 in tumor cells. Apart from epigenetic alterations, RRx-001 acts via pleiotropic mechanisms including redox signaling and redox-induced dysregulation of many different signal pathways such as Nrf2, p53, PARP cleavage, HIF1 alpha, and G6PD activity. It also triggers p53 and p21 activity in response to double-stranded DNA breaks as well as deregulates cancer cellular energetics and metabolism. RRx-001 is a potent activator of the Nrf2-ARE signaling pathway via ROS/RNS generation[3].

In vivo RRx-001 shows promise for short-term blood flow redistribution in tumors with a pericyte- and α-SMA-rich vasculature[2]. RRx-001 monotherapy is well tolerated, with no dose-limiting toxicities. It not only facilitates nuclear translocation of Nrf2, but also upregulates endogenous Nrf2 expression in SCC VII tumors in mice[3].

Protocol

Cell Research:[1]
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  • Cell lines: Human cell cancer lines HEP-G2, HT-29 and CACO-2
  • Concentrations: 5, 50, and 100 μM
  • Incubation Time: up to 72 h
  • Method: Cell growth and proliferation is assessed using the MTT proliferation assay kit. Briefly, 5×103 cells are seeded in each well of a 96-well plate and cells are treated with or without compounds. Cells are cultured for up to 72 h. MTT reagent (10 μL) is added to each well, and then incubate for 3 h. Post incubation, the culture medium is removed, 100 μL Crystal Dissolving Solution is added to each well, and the absorbance of the solution is measured at 570 nm. MTT assays for samples of the same conditions are performed in triplicate. Briefly, MTT solution (0.5 mg/mL) is added, cells are incubated at 37ºC for 4 h and absorption at 540 nm is measured using a microplate reader.
    (Only for Reference)
Animal Research:[2]
+ Expand
  • Animal Models: C3H mice/SCID mice
  • Formulation: --
  • Dosages: 15 mg/kg
  • Administration: i.v.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 53 mg/mL (197.74 mM)
Ethanol 23 mg/mL (85.81 mM)
Water Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 268.02
Formula

C5H6BrN3O5

CAS No. 925206-65-1
Storage powder
Synonyms N/A

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID