A3 Adenosine Receptor Agonists to Treat Chemotherapy-induced Peripheral Neuropathy
This invention claims species-independent agonists of A
3AR, specifically (N)-methanocarba adenine nucleosides and related pharmaceutical compositions. The A
3 adenosine receptor (A
3AR) subtype has been linked with helping protect the heart from ischemia, controlling inflammation, and regulating cell proliferation. Agonists of the human A
3AR subtype have been developed that are also selective for the mouse A
3AR while retaining selectivity for the human receptor. This solves a problem for clinical development because animal model testing is important for pre-clinical validation of drug function. Novel agonists have been made that exhibit as much as 6000x selectivity for A
3 versus A
1 in humans while retaining at least 400x selectivity for A
3 versus A
1 in mice. In addition, the molecules of the invention exhibit very low nanomolar affinity. This innovation will not only facilitate moving A
3 agonists into the clinical phase of drug development by being more amenable to animal studies, but also provide much greater selectivity in humans, and thereby potentially fewer side effects than drugs currently undergoing clinical trials.
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