Retrovirus Vector Gene Transfer Adipocytes
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Solution Overview
Problem
Current methods for gene transfer into adipocytes or preadipocytes are inefficient, lacking a functional substance that enhances retrovirus infectivity, which is crucial for effective gene therapy applications.
Innovation Solution
The use of a substance with both retrovirus-binding and target cell-binding sites, specifically containing regions capable of binding to VLA-5 and/or VLA-4, such as the heparin-II domain of fibronectin, fibroblast growth factor, or polylysine, to colocalize the retrovirus vector with adipocytes or preadipocytes, increasing the efficiency of gene transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a retrovirus vector is used for gene transfer into adipocytes or preadipocytes without a functional substance, then the procedure is simple, but the infectivity and gene transfer efficiency are low
Solution Approach 1:
The patent introduces a functional substance as an intermediary mediator between the retrovirus vector and adipocytes/preadipocytes. This substance binds to both the retrovirus and the target cell, facilitating efficient colocalization and gene transfer. The functional substance acts as a bridge that resolves the low efficiency problem without requiring complex modification of the virus or cell systems.
2Reliability
If no functional substance is used to bind retrovirus to adipocytes, then the system remains simple, but the infectivity is insufficient for effective gene therapy
Solution Approach 1:
The functional substance is designed with multi-functionality: it simultaneously binds to the retrovirus vector and to adipocytes/preadipocytes through specific binding sites. This universal binder performs multiple functions (virus attachment, cell attachment, colocalization facilitation) with a single component, thereby improving infectivity without proportionally increasing system complexity.
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 enables high-efficiency gene transfer into adipocytes or preadipocytes, facilitating their use in gene therapy by producing transformed cells that can treat or prevent diseases.
Implementation Method 1
a substance having a retrovirus-binding site and a target cell-binding site in a single molecule, or a mixture of a substance having a retrovirus-binding site and another substance having a target cell-binding site, wherein the target cell-binding site contains a region capable of binding to VLA-5 and/or a region capable of binding to VLA-4
Data Source
AI summary
A method for transferring a gene into a fat cell or progenitor fat cell comprising the step of infecting the fat cell or progenitor cell with a retrovirus vector having a foreign gene in the presence of a substance having both of a retrovirus-binding site and a target cell-binding site in the molecule or a mixture of a substance having a retrovirus-binding site and a substance having a target cell-binding site, the target cell-binding site having a region that can bind to VLA-5 and/or a region that can bind to VLA-4.