Describe a procedure to produce a transgenic mouse. |...

Name: Problem 29, Chapter 5: Molecular Biology
Uploaded: 2020-06-23T20:49:51-08:00
Duration: 2 min 9 s
Channel: Dennis Howard
Description: Describe a procedure to produce a transgenic mouse.

Key Concepts

Recombinant DNA Technology

This involves creating a DNA construct that contains the gene of interest along with regulatory elements necessary for its expression. The process includes isolating, manipulating, and combining DNA segments from various sources to form a suitable vector for gene delivery.

Gene Transfer Methods

Gene transfer refers to the introduction of foreign DNA into the genome of an organism. In the context of creating transgenic organisms, techniques such as pronuclear microinjection or embryonic stem cell-mediated gene targeting are commonly used to incorporate the gene construct into the host's genetic material.

Pronuclear Microinjection

Pronuclear microinjection is a widely used method wherein the DNA construct is directly injected into the pronucleus of a fertilized egg. This technique relies on the random integration of the transgene into the genome, allowing the foreign gene to be expressed in the developing embryo.

Embryo Manipulation and Transfer

This concept encompasses the handling of manipulated embryos, including their brief in vitro culture and subsequent transplantation into a suitable surrogate, such as a pseudopregnant female. This step is crucial for the embryos to develop into viable offspring carrying the transgene.

Germline Transmission

Germline transmission is a critical aspect of generating transgenic models, ensuring that the integrated transgene is not only present in the founder animal but can also be passed on to subsequent generations. Confirming transmission through breeding and genetic screening is essential for establishing stable transgenic lines.

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