CN009543V

Novel enhancer of tyrosine phosphorylation of EGFR via downstream signaling pathways

What is CN009543V

• CN009543V is a small molecule with CAS number 375826-84-9, molecular formula C₁₂H₁₂N₄O₆S, molecular weight ~340.31.

• It is used for research use only (not approved for human or veterinary use). 

• According to multiple catalogues, its described activity is as an enhancer of tyrosine phosphorylation of the epidermal growth factor receptor (EGFR) via downstream signaling pathways.

Mechanism / Functionality

Here are the key functional/mechanistic features:

• The compound rapidly enters cells (because it has sufficient lipophilicity) and triggers an increase in intracellular hydrogen peroxide (H₂O₂). Nature+1

• This ROS (reactive oxygen species) generation leads to the inhibition of protein tyrosine phosphatases (for example PTP-1B) and activation of the EGFR (via increased tyrosine phosphorylation at key sites such as Tyr1068 & Tyr1173). Nature+1

• More specifically:

  • The compound induces dimerization of Superoxide dismutase 1 (SOD1) in cells, which becomes functionally active and promotes H₂O₂ production. Nature

  • H₂O₂ production is a necessary event for the observed EGFR activation (via oxidative inactivation of negative regulators, etc). Nature

• In cell-based assays (breast cancer cells over-expressing EGFR), exposure to CN009543V → increased EGFR phosphorylation, increased ROS, SOD1 dimer formation. Nature+1

Thus, in simplest terms: CN009543V acts as a chemical activator of EGFR signaling by promoting an intracellular oxidative event that triggers receptor phosphorylation.

Important Considerations / Caveats

• Because its mechanism depends on ROS and redox cycling, it has the potential for cytotoxicity or off-target redox effects (not just simple “agonist” behavior). Indeed the literature notes toxicity in certain cell lines. Nature

• The “activation” of EGFR is ligand-independent in that the compound bypasses the normal receptor ligand (EGF) mechanism, instead triggering via ROS. That means the effects may differ from physiological activation. Nature

• The compound as listed is for research only — not therapeutic, not for in vivo human use without extensive validation. Catalogues emphasize “For research use only”. T

• Because of its redox/reactive nature, it might have pleiotropic effects beyond EGFR (i.e., general oxidative stress, binding to other proteins, etc). This must be considered in experiments.

Practical Research Usage

• When designing experiments with CN009543V, ensure you include oxidative stress controls (antioxidants, ROS scavengers) to validate that the mechanism is ROS-mediated. The literature used PEG-catalase, NAC, thioglycerol to modulate the effect. Nature

• Because the compound increases EGFR phosphorylation, it could be useful to probe downstream EGFR signaling pathways (e.g., MAPK/ERK, PI3K/AKT) in cells that express EGFR.

• Controls should include appropriate vehicle, EGFR ligand (EGF) stimulation, EGFR inhibitors (to confirm specificity) and ROS inhibitors.

• Dose/timing: the literature showed fairly rapid effects (minutes scale) on phosphorylation/ROS generation. For example ~15 min exposure in MDA MB468 cells. Nature

• Note solubility/storage: It is reported to be soluble in DMSO; recommended storage −20 °C or lower.