BEST2 Minimal Promoter for NPCEC-Specific Gene Expression
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Solution Overview
Problem
There is a need for improved methods of gene therapy that allow for selective expression of genes in non-pigmented ciliary epithelial cells (NPCECs) of the ciliary body, which play a crucial role in eye diseases such as glaucoma, due to the lack of a specific promoter for these cells.
Innovation Solution
A promoter specific for NPCECs, namely the BEST2 minimal promoter, is used to operably link with an expressible sequence, such as a gene encoding a polypeptide or regulatory RNA, within an expression vector or host cell, enhancing cell-specific gene expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cell-specific promoter for NPCECs is used, then gene expression specificity is improved, but current methods lack such specificity resulting in off-target expression
Solution Approach 1:
The patent applies local quality by using a promoter sequence that is specifically active only in non-pigmented ciliary epithelial cells (NPCECs). The BEST2 promoter sequence (positions 12,751,703-12,751,803 of human chromosome 19) confers cell-type-specific expression, ensuring that therapeutic genes are expressed only in the target cells and not in other cell types, thereby achieving high expression specificity while preventing off-target effects.
2Productivity
If gene therapy targets multiple therapeutic receptors, then treatment effectiveness is improved, but current methods lack efficiency in targeting specific cells
Solution Approach 1:
The patent applies universality by creating a promoter construct that can drive expression of multiple different therapeutic genes targeting various receptors (adrenergic, dopamine, prostaglandin receptors). The BEST2 promoter serves as a universal regulatory element that can control expression of any gene of interest in NPCECs, enabling multi-targeted therapy while maintaining efficient cell-specific targeting through a single promoter design.
Data Source
AI summary
A construct comprising a promoter specific for non-pigmented ciliary epithelial cells (NPCECs) is provided. In particular, the construct comprises a BEST2 minimal promoter that confers NPCEC-specific expression. The BEST2 minimal promoter may be operably linked to an expressible sequence such as a gene encoding a polypeptide of interest, a regulatory RNA sequence, a reporter gene, and the like. Such constructs may be provided in an expression vector, for example, with the BEST2 minimal promoter operably linked to an expressible sequence or in a host cell genetically modified with such an expression vector.