8) Monoclonal Antibodies

Definition

  • Monoclonal Antibodies: Identical antibodies produced from a single clone of B-lymphocytes, specifically designed to target a single protein or antigen.

Production Process

  1. B-Lymphocyte Harvesting:

    • B-lymphocytes are collected from mice injected with a specific antigen.

  2. Fusing with Tumor Cells:

    • These B-lymphocytes are fused with fast-dividing tumor cells to create hybridomas.

  3. Hybridoma Cloning:

    • Hybridomas can be cloned to produce large quantities of identical antibodies (monoclonal antibodies).

  4. Purification:

    • The produced antibodies are collected and purified for use.

Applications

  1. Pregnancy Tests:

    • Detects the hormone hCG in urine, indicating pregnancy.

  2. Targeted Treatments:

    • Used in cancer therapy to specifically target cancer cells.

  3. Diagnostic Tests:

    • Employed in various tests to diagnose diseases.

Advantages

  • Specificity: Binds to a single type of antigen, reducing the risk of side effects.

  • Consistency: Provides reliable and reproducible results due to uniformity.

Limitations

  • Complex Production: The production process can be intricate and time-consuming.

  • Ethical Concerns: Issues arise regarding the use of animals in research and the implications of genetic manipulation.

Future Potential

  • Monoclonal antibodies hold promise for treating a wide range of diseases, including autoimmune disorders and chronic diseases, with advancements in genetic engineering and cell culture techniques facilitating their development.