Sugar modified oligonucleotides. I. Carbo-oligodeoxynucleotides as potential antisense agents

Area of Science:

• Biochemistry
• Molecular Biology
• Medicinal Chemistry

Background:

• Oligonucleotides are crucial in molecular biology and therapeutics.
• Natural oligonucleotides are susceptible to enzymatic degradation, limiting their therapeutic use.
• Antisense technology targets specific nucleic acid sequences for therapeutic intervention.

Purpose of the Study:

• To synthesize and characterize novel carbo-oligodeoxynucleotides.
• To evaluate the stability and DNA-binding properties of these synthetic oligomers.
• To assess their potential as antisense agents.

Main Methods:

• Chemical synthesis of carbo-oligodeoxynucleotides (c-dT4 and c-dT12).
• Enzymatic degradation assays to compare stability with natural oligomers.
• DNA binding affinity studies using complementary DNA sequences.

Main Results:

• Successful synthesis of carbo-oligodeoxynucleotides for the first time.
• Carbo-oligodeoxynucleotides demonstrated at least 5-fold greater stability against enzymatic degradation compared to natural oligomers.
• Enhanced binding affinity to complementary DNA sequences was observed.

Conclusions:

• Carbo-oligodeoxynucleotides represent a promising class of synthetic nucleic acid analogs.
• Their increased stability and binding affinity meet key criteria for effective antisense agents.
• Further research is warranted to explore their therapeutic potential.