SCID mice

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SCID mice (Severe Combined Immunodeficiency mice) are a type of laboratory mouse that is genetically engineered to lack an adaptive immune system. These mice are crucial in biomedical research, particularly in studies involving immunology, cancer, and infectious diseases.

Background[edit | edit source]

SCID mice were first discovered in 1983 as a result of a spontaneous mutation in a colony of BALB/c mice. The mutation affects the protein kinase, DNA activated, catalytic polypeptide (PRKDC) gene, which is essential for the development of functional B and T lymphocytes. As a result, SCID mice are unable to produce mature B and T cells, leading to a severely compromised immune system.

Characteristics[edit | edit source]

SCID mice are characterized by their:

  • Lack of functional B and T lymphocytes.
  • Inability to mount an adaptive immune response.
  • High susceptibility to infections.
  • Usefulness in xenograft studies due to their inability to reject foreign tissues.

Applications in Research[edit | edit source]

SCID mice are invaluable in various fields of research:

Cancer Research[edit | edit source]

SCID mice are often used in cancer research to study tumor growth and metastasis. They allow for the engraftment of human tumor cells, enabling researchers to study human cancer biology in a living organism.

Infectious Disease Studies[edit | edit source]

Due to their immunodeficiency, SCID mice are used to study the pathogenesis of infectious diseases and to evaluate the efficacy of vaccines and antimicrobial agents.

Immunology[edit | edit source]

SCID mice serve as models for studying the immune system, particularly in understanding the role of B and T cells in immune responses.

Gene Therapy[edit | edit source]

SCID mice are used in gene therapy research to test the safety and efficacy of gene transfer techniques aimed at correcting genetic defects.

Limitations[edit | edit source]

While SCID mice are a powerful tool in research, they have limitations:

  • They are highly susceptible to opportunistic infections, requiring them to be housed in sterile environments.
  • The lack of an immune system can sometimes lead to atypical disease progression compared to immunocompetent models.

Also see[edit | edit source]

Template:Laboratory animals



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