A glycopolymer chaperone for fibroblast growth factor-2

Area of Science:

• Polymer Chemistry
• Glycobiology
• Biochemistry

Background:

• Heparin and heparan sulfate are crucial glycosaminoglycans involved in various biological processes.
• Fibroblast growth factor-2 (FGF-2) plays a key role in cell proliferation and angiogenesis.
• Understanding molecular chaperones for growth factors is vital for therapeutic development.

Purpose of the Study:

• To synthesize novel glycopolymers with potential heparin-mimicking properties.
• To investigate the interaction of these glycopolymers with fibroblast growth factor-2 (FGF-2).
• To evaluate the potential of these compounds in promoting cell proliferation and therapeutic angiogenesis.

Main Methods:

• Cyanoxyl-mediated polymerization of acrylamide with acrylate-derivatized mono- and disaccharides.
• Synthesis of glycopolymers bearing sulfated lactose units.
• Assays to assess FGF-2 protection against degradation (proteolytic, acid, heat).
• Analysis of growth factor and receptor dimerization.
• Evaluation of FGF-2 specific proliferative cell response.

Main Results:

• Successfully synthesized mono- and disaccharide-containing glycopolymers.
• Demonstrated that a glycopolymer with sulfated lactose units effectively replaces heparin/heparan sulfate as an FGF-2 molecular chaperone.
• Identified a compound protecting FGF-2 from degradation and promoting growth factor/receptor dimerization.
• Confirmed the glycopolymer's capacity to promote an FGF-2 specific proliferative cell response.

Conclusions:

• Developed a functional heparin-mimic glycopolymer.
• This glycopolymer shows significant potential as a therapeutic agent for angiogenesis.
• Further research into related derivatives may yield novel treatments.