Synthetic Nanoparticle Constructs for Nuclear Delivery of Transcription Factors
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Solution Overview
Problem
Existing synthetic transcription factors (STFs) face limitations in penetrating the nuclear membrane and are prone to intracellular degradation, which hampers their effectiveness in regulating gene expression and cellular processes such as stem cell differentiation.
Innovation Solution
Biologically active synthetic nanoparticle constructs comprising a biologically inert substrate with DNA binding domains (DBD), nuclear localization signals (NLS), and optionally activation or repression domains (AD/RD) are developed, allowing for effective penetration and regulation of gene expression within the nucleus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synthetic transcription factors are used to regulate gene expression, then transcriptional regulation capability is improved, but nuclear membrane penetration and intracellular stability deteriorate
Solution Approach 1:
The patent combines synthetic transcription factors with biologically active nanoparticles to create a composite system. The nanoparticle component provides protection against intracellular degradation and enhances stability, while the STF component maintains transcriptional regulation capability. This composite approach resolves the contradiction by integrating two materials with complementary properties.
Solution Approach 2:
The biologically active nanoparticle acts as an intermediary carrier that facilitates the delivery of synthetic transcription factors into the nucleus. The nanoparticle mediates nuclear membrane penetration and protects the STF from degradation during transit, thereby improving both delivery efficiency and intracellular stability simultaneously.
2Reliability
If synthetic transcription factors are used to regulate gene expression, then transcriptional regulation capability is improved, but nuclear membrane penetration deteriorates
Solution Approach 1:
The biologically active nanoparticle serves as an intermediary vehicle that enables the synthetic transcription factor to traverse the nuclear membrane. The nanoparticle's structure and surface properties facilitate active transport through nuclear pores, allowing the STF to reach its target DNA sequences without being hindered by the nuclear membrane barrier.
Solution Approach 2:
The synthetic transcription factor is nested within or associated with the biologically active nanoparticle structure. This nesting arrangement allows the STF to be delivered as part of a larger, more complex system that has enhanced penetration capabilities, effectively solving the nuclear membrane barrier problem.
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
These constructs enable significant increases in gene expression, activate or repress transcription, and modulate stem cell differentiation by effectively localizing within the nucleus and maintaining stability, overcoming the limitations of existing STFs.
Implementation Method 1
comprised of a biologically inert substrate, a plurality of DNA binding domains (DBD), and a plurality of nuclear localization signals (NLS), wherein the plurality of DBD and the plurality of NLS are attached to a surface of the biologically inert substrate
Data Source
AI summary
This application discloses the compositions comprising biologically active synthetic nanoparticle constructs and methods of use thereof to modify gene expression including transcriptional activation and transcriptional repression.