NR-7h
Based on 1 Customer Validation
NR-7h is a selective p38α/p38β MAPK PROTAC degrader with multiple activities including anti-leishmanial, anti-malarial, and anti-Mayaro virus properties. NR-7h induces specific degradation of p38α/p38β isoforms and p38-MAPK via the ubiquitin-proteasome system. NR-7h reduces the load of Leishmania donovani, modulates the cytokine profile toward a pro-inflammatory phenotype, and enhances the oxidative burst of macrophages. NR-7h inhibits the growth of Plasmodium falciparum in human red blood cells and merozoite invasion. NR-7h reduces the replication of Mayaro virus and the expression of E1 protein in primary human dermal fibroblasts. NR-7h can be used in studies related to parasitic infections, viral infections, and breast cancer.
(Pink: p38α and p38β ligand (HY-403098); Blue: Cereblon ligand (HY-103596); Black: linker).
For research use only. We do not sell to patients.
- Purity: 98.31%
- CAS No.: 2550399-06-7
- Formula: C48H50BrF2N9O8
- Molecular Weight:998.87
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Storage:Powder -20°C, 3 years ; In solvent -80°C, 6 months , -20°C, 1 month
Biological Activity
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p38α |
p38β |
p38 MAPK |
Leishmania |
Plasmodium |
NR-7h (0.01-10 μM; 1-24 h) specifically degrades p38-MAPK in PMA-differentiated human THP-1 macrophages in a concentration- and time-dependent manner via the ubiquitin-proteasome pathway, with a DC50 of 162.9 nM[1].
NR-7h specifically degrades p38-MAPK in human primary erythrocytes via the ubiquitin-proteasome pathway, and exerts no effect on ERK1/2 levels at a concentration of 1 μM[1].
NR-7h (0.05-1 μM; 2-24 h) rapidly and potently induces the degradation of p38α and p38β isoforms in primary human dermal fibroblasts, with only extremely low cytotoxicity[2].
NR-7h (0.1-1 μM; 6 h pre-treatment, followed by 12-60 h infection) reduces Leishmania donovani load in PMA-differentiated human THP-1 macrophages in a dose- and time-dependent manner via degradation of host p38-MAPK; this compound does not directly affect the viability of promastigotes[1].
NR-7h (0.5-1 μM; 6 h pre-treatment, followed by 24 h co-treatment) acts synergistically with Amphotericin B (HY-B0221) to enhance the clearance of intracellular Leishmania donovani in PMA-differentiated human THP-1 macrophages[1].
NR-7h (156 nM-20 μM; 72 h) inhibits the growth of Plasmodium falciparum strain 3D7 in primary human red blood cells, with an IC50 of 1.047 μM; it also reduces the invasion rate of malaria parasites in a dose-dependent manner[1].
NR-7h (1 μM; 6 h pre-treatment, followed by 10 min-24 h infection) mediates the degradation of p38-MAPK in PMA (HY-18739)-differentiated human THP-1 macrophages, thereby reshaping the host immune response to Leishmania donovani infection: it upregulates pro-inflammatory cytokines and oxidative stress mediators (ROS, NO, NOS2), while downregulating the anti-inflammatory factor IL-10[1].
NR-7h (0.05-1 μM; 3 h pre-incubation, 24 h post-infection) reduces Mayaro virus replication levels in primary human dermal fibroblasts in a dose-dependent manner, and significantly decreases viral titers and the number of antigen-positive cells[2].
NR-7h (0.05-1 μM; 3 h pre-incubation, 16-24 h post-infection) triggers the degradation of p38α/p38β, which downregulates the expression of Mayaro virus E1 structural protein in primary human dermal fibroblasts[2].
NR-7h (24 h) induces the degradation of p38α and p38β proteins in human breast cancer T47D and MB-MDA-231 cells; the DC50 values of p38α in the two cell lines are 24 nM and 27.2 nM, respectively, while the corresponding DC50 values of p38β are 48.47 nM and 48.90 nM[3].
NR-7h (1 µM; 16 h) selectively downregulates p38α in human breast cancer cell line MB-MDA-231 without affecting other cellular proteins[3].
NR-7h not only inhibits UV-induced activation of the p38α pathway in human breast cancer MB-MDA-231 cells for at least two days after administration, but also blocks p38α pathway activation in LPS/IFN-γ-stimulated primary BMDMs[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:PMA-differentiated THP-1 human macrophages
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Concentration:0.01, 0.05, 0.1, 0.25, 0.5, 1, 5, 10 μM (24 h)
0.25, 1 μM (1-6 h)
1 μM (6 h, with/without 20 μM MG132 (HY-13259)) -
Incubation Time:24 h
1 h, 3 h, 6 h
6 h (with/without 20 μM MG132) -
Result:Induced ~2-fold degradation of p38-MAPK across 0.25-10 μM at 24 h, with no effect on ERK1/2 levels across all tested concentrations.
Achieved maximal degradation with 1 μM at 6 h, in a concentration- and time-dependent manner.
Confirmed reduced p38-MAPK and phospho-p38-MAPK levels via imaging flow cytometry at 1 μM.
Exhibited a half-maximal degradation concentration (DC50) of 162.9 nM for p38-MAPK.
Had its p38-MAPK degradation blocked by proteasome inhibition with MG132, confirming a ubiquitin-proteasome-dependent mechanism.
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Cell Line:PMA-differentiated THP-1 human macrophages
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Concentration:0.1, 0.2, 0.5, 0.75, 1, 2, 2.5, 5, 10 μM
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Incubation Time:72 h
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Result:Showed no significant reduction in THP-1 macrophage viability at all tested concentrations.
Chemical Information
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CAS No. 2550399-06-7
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Appearance Solid
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Molecular Weight 998.87
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Formula C48H50BrF2N9O8
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Color Light yellow to yellow
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SMILES
O=C(NCCCCC1=CN(CCCC(NCCCCNC2=CC=CC(C(N3C(CC4)C(NC4=O)=O)=O)=C2C3=O)=O)N=N1)C5=CC=C(C)C(N6C(C)=CC(OCC7=CC=C(F)C=C7F)=C(Br)C6=O)=C5
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years In solvent -80°C 6 months -20°C 1 month
Purity & Documentation
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Data Sheet (288 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Singhal J, et al. Chemical degradation of Human p38-MAPK reveals it as a potential host target to combat parasitic infections by Leishmania donovani and Plasmodium falciparum. Communications biology. 2026 Jun 11. [Content Brief]
[2]. Sugasti-Salazar M, et al. Inhibition of p38 Mitogen-Activated Protein Kinase Impairs Mayaro Virus Replication in Human Dermal Fibroblasts and HeLa Cells. Viruses. 2021 Jun 17;13(6):1156. [Content Brief]
[3]. Donoghue C, et al. Optimal linker length for small molecule PROTACs that selectively target p38α and p38β for degradation. European journal of medicinal chemistry. 2020 Sep 01;201:112451. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)