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mRNA vector

In the context of molecular biology and biotechnology, an mRNA vector, often referred to as a "messenger RNA vector" or simply "mRNA vector," is a tool used to deliver and express a specific mRNA molecule in a target cell. Unlike traditional plasmid-based or viral vectors, which are commonly used for DNA-based gene delivery, mRNA vectors carry and deliver the genetic information in the form of messenger RNA (mRNA).

Key features of mRNA vectors include:

1. Transient Expression: mRNA vectors are designed to provide transient gene expression. The delivered mRNA is translated into protein within the target cell but is not integrated into the cell's genome. This allows for a temporary and controlled expression of the desired protein.

2. Non-viral: Unlike viral vectors, mRNA vectors do not require viral components for delivery. Instead, the mRNA is encapsulated in lipid nanoparticles or other delivery systems that facilitate cellular uptake.

3. Safety: mRNA vectors are considered safer than some viral vectors because they do not pose the risk of genomic integration or potential for virus-related side effects.

Applications of mRNA vectors include:

Vaccines: mRNA vectors have gained significant attention for vaccine development. They have been used in the development of mRNA vaccines, such as the Pfizer-BioNTech and Moderna COVID-19 vaccines, to express viral antigens and stimulate an immune response.

Protein Production: mRNA vectors are used in research and biotechnology to produce recombinant proteins of interest in cell culture systems. They are valuable for rapidly generating proteins for research purposes.

Gene Therapy: mRNA vectors hold potential for gene therapy applications, as they can be used to deliver therapeutic mRNA molecules to treat genetic diseases, cancer, and other medical conditions.

Research: mRNA vectors are used in various research applications to study gene function, gene regulation, and protein expression.

The development and utilization of mRNA vectors have expanded significantly in recent years, offering new possibilities for both basic research and therapeutic applications in the fields of molecular biology and medicine.


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If you know of any terms that have been omitted from this glossary that you feel would be useful to include, please send detail to the Editorial Office at GenScript: [email protected]

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