Document Type


Publication Date

May 2018

Patent Number



C-natriuretic peptide (CNP) has been shown to regulate proliferation of mouse and rat osteoblasts. Genetic deletion of CNP results in dwarfism. CNP effects on bone growth involve inhibition of MEK 1 and ERK 1/2 kinases mediated via the intracellular messenger cyclic GMP. Vessel dilator is another natriuretic peptide synthesized by the atrial natriuretic peptide gene whose biologic half-life is 12 times longer than CNP. Vessel dilator's biologic effects on proliferating cells are mediated via inhibiting MEK 1/2 and ERK 1/2 kinases via cyclic GMP. Vessel dilator was not studied previously on osteoblasts. CNP and vessel dilator were tested in dose-response studies enhanced human osteoblasts' proliferation, showing that vessel dilator has identical mechanisms of action to CNP but much longer biologic half-life and effects at lower concentrations. Vessel dilator exhibited therapeutic effect for use in human achondroplasia, short stature and osteoporosis by stimulating osteoblast proliferation.

Application Number



University of South Florida

Filing Date