[Construction and efficacy study of a novel 10-23 deoxyribozyme expression vector]

Area of Science:

• Molecular Biology
• Gene Regulation
• Biotechnology

Context:

• Developing targeted gene silencing strategies is crucial for understanding and treating diseases.
• Deoxyribozymes (10-23DZ) offer a promising approach for sequence-specific RNA cleavage.
• Macrophages play a key role in inflammatory and immune responses, making them a relevant target for gene modulation.

Purpose:

• To construct a novel 10-23 deoxyribozyme (10-23DZ) expression vector.
• To confirm intracellular production of the specific 10-23DZ.
• To evaluate the inhibitory effect of the 10-23DZ on TACO gene expression in macrophages.

Summary:

• A novel 10-23DZ expression vector (pSDE01-DZ1) was successfully constructed, incorporating mouse Moloney leukemia viral reverse transcriptase (MLV-RT) for intracellular enzyme production.
• Transfection of pSDE01-DZ1 into RAW264.7 macrophage cells resulted in effective expression of the designed 10-23DZ (DZ1).
• The expressed DZ1 significantly inhibited TACO gene expression, reducing TACO mRNA by 77.7% and TACO protein by 73.3%.

Impact:

• This study presents a functional 10-23DZ expression vector for targeted gene silencing in mammalian cells.
• The developed vector system demonstrates the potential for intracellular generation of specific deoxyribozymes to modulate gene expression.
• This technology could be applied to investigate gene function and develop novel therapeutic strategies by silencing target genes.