Antisense Oligonucleotide Modulation of Pancreatic Developmental Gene Expression
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Solution Overview
Problem
Current methods for modulating the expression and function of Pancreatic Developmental genes are limited in their ability to specifically target and regulate these genes, particularly in vivo or in vitro, with existing antisense oligonucleotides facing challenges in specificity and efficacy.
Innovation Solution
The use of antisense oligonucleotides, specifically designed to have at least 50% sequence identity to a reverse complement of Pancreatic Developmental gene sequences, administered in various forms such as phosphorothioate or locked nucleic acid molecules, to target and modulate the expression of Pancreatic Developmental genes in patient cells or tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antisense oligonucleotides are used to modulate Pancreatic Developmental gene expression, then gene expression modulation is achieved, but specificity and efficacy are limited
Solution Approach 1:
The patent applies local quality by modifying specific regions of the oligonucleotide molecule rather than uniform modification. Different portions of the oligonucleotide have different properties: the antisense sequence region maintains natural base-pairing capability for specific binding, while other regions incorporate modifications for enhanced stability and resistance to nucleases. This localized differentiation resolves the contradiction by achieving high specificity through unmodified binding regions while gaining reliability through modified protective regions.
Solution Approach 2:
The patent employs composite materials by creating chimeric oligonucleotides that combine different nucleic acid components with distinct properties. These composite molecules integrate natural DNA/RNA sequences for specific target recognition with chemically modified nucleotides for enhanced stability and pharmacokinetic properties. The composite structure resolves the contradiction between specificity (provided by natural sequences) and reliability (enhanced by modified components).
2Reliability
If antisense oligonucleotides are administered in vivo or in vitro, then gene expression can be modulated, but delivery and stability challenges arise
Solution Approach 1:
The patent applies preliminary action by pre-modifying the oligonucleotide molecules with protective chemical groups before administration. The oligonucleotides are synthesized with incorporated modifications such as phosphorothioate backbones, 2'-O-methyl modifications, or other chemically stabilized structures that provide resistance to nucleases and improve cellular uptake properties before the molecules encounter biological barriers in vivo or in vitro. This preliminary protection resolves the contradiction by ensuring stability and delivery capability before the molecules face degradation threats.
Solution Approach 2:
The patent converts harmful factors into benefits by using chemical modifications that originally might seem to alter the molecule's natural properties but actually provide protective advantages. For example, replacing oxygen with sulfur in the phosphate backbone (phosphorothioate modification) reduces nuclease susceptibility, and adding 2'-O-methyl groups protects against degradation while maintaining binding affinity. These modifications transform the potential harm of chemical alteration into the benefit of enhanced stability and delivery, resolving the contradiction between reliability and harmful factors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively up-regulates or down-regulates the expression of Pancreatic Developmental genes, as demonstrated by real-time PCR results showing significant changes in mRNA levels, indicating specific and effective modulation of gene function.
Implementation Method 1
DNA-RNA and RNA-RNA hybridization arc important to many aspects of nucleic acid function including DNA replication, transcription, and translation. Hybridization is also central to a variety of technologies that either detect a particular nucleic acid or alter its expression. Antisense nucleotides, for example, disrupt gene expression by hybridizing to target RNA
Implementation Method 2
Antisense DNA has the added feature that DNA-RNA hybrids serve as a substrate for digestion by ribonuclease H. an activity that is present in most cell types
Data Source
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AI summary
The present invention relates to antisense oligonucleotides that modulate the expression of and/or function of a Pancreatic Developmental gene, in particular, by targeting natural antisense polynucleotides of a Pancreatic Developmental gene. The invention also relates to the identification of these antisense oligonucleotides and their use in treating diseases and disorders associated with the expression of Pancreatic Developmental genes.