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RRx-001
本产品不向个人销售,仅用作科学研究,不用于任何人体实验及非科研性质的动物实验。
RRx-001图片
包装与价格:
包装价格(元)
10mM (in 1mL DMSO)询价
5mg询价
10mg询价
50mg询价
100mg询价

RRx-001 is an aerospace-derived anticancer agent with reactive nitrogen species (RNS)-generating chemistry that leads to epigenetic alterations, such as DNA methylation and histone acetylation in cancer cells.

Cell lines

Human cancer cell lines HEP-G2, HT-29, CACO-2

Preparation Method

The MTT proliferation assay kit was used to detect cell growth and proliferation. 5 103 cells were seeded in each well of a 96-well plate, treated with (or without) compound (RRx-001) and cultured for up to 72 h. Then 10 μL was added to each well

Reaction Conditions

5, 50, 100 mM RRx-001 for 72h

Applications

RRx-001 affects glucose and G6PD enzyme activity in three different cancer cell lines namely Hep G2, CACO-2, and HT-29. In all cancer cell lines tested, RRx-001 induced G6PD inhibition in a concentration dependent fashion.

Animal models

Nude mice, male, 7-8 weeks old and 20-25 grams in body weight

Preparation Method

Tumors were imaged for basal FLUC, RLUC, and mRFP signals 24 h before administration of RRx-001. Following injection with RRx-001, mice were imaged for RLUC signal by intravenous injection of 50 μg of coelenterazine at 8 and 24 h post-RRx-001 treatment.

Dosage form

10 mg/kg RRx-001( i.v.)

Applications

Mice were imaged for ARE-FLUC expression 24 h before and after RRx-001 administration. Results showed that a single dose of 10 mg/kg RRx-001 inhibited tumor growth and produced a tumor volume quadrupling time of 5.7±1.3 days compared to 3.3±0.7 days of vehicle control group.

产品描述

RRx-001 is an aerospace-derived anticancer agent with reactive nitrogen species (RNS)-generating chemistry that leads to epigenetic alterations, such as DNA methylation and histone acetylation in cancer cells[4,7]. 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[5]. RRx-001 also triggers p53 and p21 activity in response to double-stranded DNA breaks as well as deregulates cancer cellular energetics and metabolism[6].

Rx-001 affects glucose and G6PD enzyme activity in three different cancer cell lines namely Hep G2, CACO-2, and HT-29. In all cancer cell lines tested, RRx-001 induced G6PD inhibition in a concentration dependent fashion[1]. RRx-001 mediated nuclear translocation of Nrf2 and the activation of expression of its downstream enzymes HO-1 and NQO1 in tumor cells. Inhibition of intrinsic Nrf2 expression by Nrf2-specific siRNA increased cell sensitivity to RRx-001[2]. The increase in the synthesis and release of cytokines and the up-regulation of pro-inflammatory factors in LPS-treated microglial cells were significantly reduced by RRx-001 pretreatment. As the most classical inflammatory pathways, NF-κB and MAPK signaling pathways were activated by LPS, but were inhibited by RRx-001[9].

Molecular imaging of tumor cells co-expressing pARE-Firefly luciferase and pCMV-Renilla luciferase-mRFP in vitro and in vivo in mice revealed that RRx-001 significantly increased ARE-FLUC signal in cells in a dose- and time-dependent manner, suggesting that RRx-001 is an effective activator of the Nrf2-ARE signaling pathway[2]. RRx-001 plays a role in short-term blood flow redistribution in tumors enriched in percutaneous cells and α-SMA vessels[3]. One hour following administration of 99mTc labeled RBCs treated with 10 mg/kg RRx-001, An approximate 2.0-fold and 1.5-fold increase in 99mTc-labeled RBCs compared to vehicle control in HEPG2 and HT-29 tumor models, respectively. An approximate 40% and 36% decrease in HEP-G2 and HT-29 tumor weight, respectively, following treatment with RRx-001[8].

References:
[1]. Oronsky B, Scicinski J, et,al. RRx-001, a novel clinical-stage chemosensitizer, radiosensitizer, and immunosensitizer, inhibits glucose 6-phosphate dehydrogenase in human tumor cells. Discov Med. 2016 Apr;21(116):251-65. PMID: 27232511.
[2]. Ning S, Sekar TV, et,al. Nrf2 activity as a potential biomarker for the pan-epigenetic anticancer agent, RRx-001. Oncotarget. 2015 Aug 28;6(25):21547-56. doi: 10.18632/oncotarget.4249. PMID: 26280276; PMCID: PMC4673285.
[3]. Oronsky B, Scicinski J, et,al. RRx-001, an epigenetic-based radio- and chemosensitizer, has vascular normalizing effects on SCCVII and U87 tumors. Clin Epigenetics. 2016 May 11;8:53. doi: 10.1186/s13148-016-0220-7. PMID: 27175220; PMCID: PMC4864927.
[4]. Ning S, Bednarski M, et,al.Dinitroazetidines are a novel class of anticancer agents and hypoxia-activated radiation sensitizers developed from highly energetic materials. Cancer Res. 2012 May 15;72(10):2600-8. doi: 10.1158/0008-5472.CAN-11-2303. PMID: 22589277.
[5]. Magesh S, Chen Y, et,al. Small molecule modulators of Keap1-Nrf2-ARE pathway as potential preventive and therapeutic agents. Med Res Rev. 2012 Jul;32(4):687-726. doi: 10.1002/med.21257. Epub 2012 May 1. PMID: 22549716; PMCID: PMC3393814.
[6]. Oronsky B, Oronsky N, et,al. Episensitization: therapeutic tumor resensitization by epigenetic agents: a review and reassessment. Anticancer Agents Med Chem. 2014;14(8):1121-7. doi: 10.2174/1871520614666140418144610. PMID: 24893730; PMCID: PMC4262965.
[7]. Oronsky B, Scicinski J, et,al. RRx-001, A novel dinitroazetidine radiosensitizer. Invest New Drugs. 2016 Jun;34(3):371-7. doi: 10.1007/s10637-016-0326-y. Epub 2016 Feb 3. PMID: 26841903; PMCID: PMC4859863.
[8]. Jani VP, Asaro R, et,al. RRx-001 Increases Erythrocyte Preferential Adhesion to the Tumor Vasculature. Int J Mol Sci. 2021 Apr 29;22(9):4713. doi: 10.3390/ijms22094713. PMID: 33946824; PMCID: PMC8124275.
[9].Fang J, She J, et,al. RRx-001 Exerts Neuroprotection Against LPS-Induced Microglia Activation and Neuroinflammation Through Disturbing the TLR4 Pathway. Front Pharmacol. 2022 Apr 6;13:889383. doi: 10.3389/fphar.2022.889383. PMID: 35462935; PMCID: PMC9020799.

 
 
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