CUR5g

SKU: orb2900549

Description

CUR5g is a potent autophagy inhibitor. CUR5g selectively inhibits autophagosome degradation in cancer cells by blocking autophagosome-lysosome fusion. CUR5g blocks the recruitment of STX17 to autophagosomes via a UVRAG-dependent mechanism, resulting in the inability of autophagosomes to fuse with lysosomes. CUR5g improves the anticancer effect of Cisplatin (HY-17394) against A549 cells both in vitro and in vivo.

Key Properties

• CAS Number: 1370032-20-4
• MW: 344.41
• Purity: >98% (HPLC)
• Formula: C₂₂H₂₀N₂O₂
• SMILES: C(\C=1C=2C(NC1)=CC=CC2)=C\3/C(=O)\C(=C\C4=CC=C(O)C=C4)\CN(C)C3
• Target: Autophagy
• Solubility: In Vitro: DMSO : 41.67 mg/mL (120.99 mM; Ultrasonic (<60°C)

Bioactivity

• In Vivo:
  Animal model: BALB/c nude mice (4-week-old, A549 cells were subcutaneously injected into the right scapula of each nude mouse). Dosage: 40 mg/kg, CUR5g (40 mg/kg) and Cisplatin (1 mg/kg). Administration: Injected via caudal vein, once every 2 days for up to 15 days. Result: Retarded the growth of xenografted tumors, whereas the combination treatment with Cisplatin almost completely inhibited tumor growth. Promoted the cisplatin sensitivity of A549 cells by inhibiting autophagic flux.
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• In Vitro:
  Cell Autophagy Assay Cell line: A549 cells. Concentration: 0, 1, 5, 10, 20, and 40 μM. Incubation time: 3, 6, 12, and 24 h. Result: Induced extensive cytoplasmic vacuolization, and GFP-LC3B signal shifted from diffuse cytosolic staining to a punctate pattern outlining autophagosomes. Western blot analysis. Cell line: A549 cells. Concentration: 0, 1, 5, 10, 20, and 40 μM. Incubation time: 0, 1, 3, 6, 12, and 24 h. Result: Up-regulated LC3B-II and sequestosome 1 (SQSTM1) levels time- and dose-dependently. This increase was not the result of enhanced transcription, as mRNA expression of SQSTM1 and LC3B were not increased within CUR5 g-exposed cells, suggesting that CUR5 g might block autophagic flux rather than increase autophagosome formation. Cell Proliferation Assay Cell line: A549 cells. Concentration: 0, 1, 5, 10, 20, and 40 μM. Incubation time: 24 h. Result: Exhibited great toxicity to A549 cells at 20 μM. Slightly decreased A549 cell number at 10 μM, while decreased the number of A549 cells significantly at 20 μM. Showed no discernable activity in healthy human umbilical vein endothelial cell (HUVEC) viability at 40 μM.
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Storage & Handling

• Storage: Storage temperature: -20°C. Stability: ≥ 2 years
• Expiration Date: 12 months from date of receipt.
• Disclaimer: For research use only

Quick Database Links

Gene Symbol

Autophagy