GFRα/RET Signaling Activator, XIB-4035

Cell permeable: yes

Primary Target
GFRα1

Reversible: yes

Target IC₅₀: 10.4 µM for ¹²⁵I-GDNF binding in Neuro-2A cells

Toxicity: Standard Handling (A)

A cell-permeable chlorostyrylquinolinylbutylamino compound that was shown to competitively bind to glial cell line-derived neurotrophic factor (GDNF) family receptor-α1 (GFRα1) and act as an agonist (IC₅₀ = 10.4 µM for ¹²⁵I-GDNF binding in Neuro-2A cells) and induce autophosphorylation of RET protein. Elicits neurite outgrowth of Neuro-2A cells in a dose-dependent manner. However, some of the recent studies have questioned its agonist nature and have suggested that it acts as a positive modulator of ligand-Induced GFRα/RET signaling and prolongs the GDNF-induced RET phosphorylation. Shown to be effective in treating small fiber neuropathy caused by non-myelinating Schwann cell dysfunction in diabetic murine models leading to improved thermononiception. Does not appear to be toxic up to ~100 µM.

Please note that the molecular weight for this compound is batch-specific due to variable water content.

Hedstrom, K.L., et al. 2014. Proc. Natl. Acad. Sci. USA111, 2325.
Tokugawa, K., et al. 2003. Neurochem. Int.42, 81.

Packaged under inert gas

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Use only fresh DMSO for reconstitution.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany