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Chaperone-mediated autophagy (CMA) contributes to cellular quality control and the cellular response to stress through the selective degradation of cytosolic proteins in lysosomes. Decrease in CMA activity occurs in aging and in age-related disorders. Signaling through the retinoic acid receptor alpha (RARα) inhibits CMA. AR7, an RARα antagonist, significantly activates CMA activity in mouse fibroblasts. A marked increase in CMA-activating potency is found when AR7 and GR1 are combined, supporting their cooperative effect. Treatment with the transcriptional repressor Actinomycin D partially reduces the stimulatory effect of AR7 on CMA, consistent with transcriptional changes contributing to the upregulation of CMA.
Cell Biochem Biophys. 2025 Feb 25; .
Chaperone-Mediated Autophagy Reactivation Protects Against Severe Acute Pancreatitis-Associated Liver Injury Through Upregulating Keap1/Nrf2 Signaling Pathway and Inhibiting NLRP3 Inflammasome Activation
AR7 purchased from AbMole
| Molecular Weight | 257.71 |
| Formula | C15H12ClNO |
| CAS Number | 80306-38-3 |
| Solubility (25°C) | DMSO ≥ 16 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related RAR/RXR Products |
|---|
| Acitretin (Ro 10-1670)
Acitretin (Ro 10-1670) is a second-generation retinoid. |
| Adapalene
Adapalene is a third-generation topical retinoid, it is a potent RAR agonist, with AC50 values of 2.3 nM, 9.3 nM, and 22 nM for RARβ, RARγ, RARα, respectively. Adapalene also inhibits the enzymatic activity of GOT1 in a non-competitive manner. Adapalene is also an MST1 agonist. |
| Tamibarotene
Tamibarotene is a synthetic retinoic acid receptor (RAR) agonist with high specificity for RARα and RARβ over RARγ. |
| TTNPB
TTNPB (Arotinoid Acid) is a potent RAR agonist, and inhibits binding of [3H]tRA with IC50 of 5.1 nM, 4.5 nM, and 9.3 nM for human RARα, β, and γ, respectively. |
| Fenretinide
Fenretinide (4-HPR) is a synthetic retinoid deriverative. Fenretinide is shown to exhibit binding to the retinoic acid receptors (RAR) at concentrations necessary to induce cell death. |
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