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Related Concept Videos

In-vitro Mutagenesis01:16

In-vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
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Mouse in Utero Electroporation: Controlled Spatiotemporal Gene Transfection
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Published on: August 15, 2011

Cell-type-specific transgenesis in the mouse.

James Gulick1, Jeffrey Robbins

  • 1Cincinnati Children's Hospital, University of Cincinnati, Cincinnati, OH, USA.

Methods in Molecular Biology (Clifton, N.J.)
|June 9, 2009
PubMed
Summary
This summary is machine-generated.

Generating transgenic mice has advanced genetic research since the 1980s. This work focuses on the alpha myosin heavy-chain (MHC) promoter for cardiomyocyte-specific gene expression, addressing challenges in targeted transgene delivery.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Cardiovascular Research

Background:

  • Transgenic mouse technology has evolved significantly since the 1980s, enabling the creation of numerous genetically modified lines.
  • Early transgenic models utilized random gene insertion, with initial promoters like metallothionein-1 (Mt-1) showing inducible expression.
  • Ubiquitous viral promoters (SV40, cytomegalovirus) offered high expression but lacked cell-type specificity, hindering research on organ-specific functions.

Purpose of the Study:

  • To detail the components of the alpha myosin heavy-chain (MHC) promoter.
  • To highlight the MHC promoter's utility for achieving cardiomyocyte-specific transgene expression in mice.
  • To discuss common challenges encountered when developing transgenic mouse lines.

Main Methods:

  • Review of established methods for generating transgenic mice.
  • Analysis of promoter elements, specifically focusing on the alpha myosin heavy-chain (MHC) promoter.
  • Discussion of experimental outcomes and limitations in transgene expression studies.

Main Results:

  • The alpha myosin heavy-chain (MHC) promoter has been successfully employed to drive transgene expression specifically in cardiomyocytes.
  • The development of cell-type-specific promoters addresses the limitations of ubiquitous promoters in discerning tissue-specific gene functions.
  • Understanding promoter components is crucial for optimizing transgene expression in targeted cell populations.

Conclusions:

  • The alpha myosin heavy-chain (MHC) promoter is a valuable tool for cardiomyocyte-specific genetic modification in mice.
  • Addressing challenges in transgenic mouse line generation is essential for advancing research in developmental biology and disease modeling.
  • Targeted gene expression strategies are critical for dissecting complex biological processes in specific cell types.