Antibody Production and Secretion The most fundamental function of plasma cells is the synthesis and release of immunoglobulins, commonly known as antibodies. Complement Activation and Immune Clearance Beyond direct neutralization and opsonization, the functions of plasma cells extend to activating the complement system.
Coordinating the Immune Response: How Plasma Cells Orchestrate Defense
They can directly neutralize pathogens by coating their surface, thereby blocking the microbe’s ability to enter and infect host cells. This sustained antibody presence is the biological basis for the effectiveness of certain vaccines, offering immediate protection upon re-exposure without requiring a full primary immune response.
These antibodies are released into the bloodstream and lymphatic system, where they circulate until they encounter the specific pathogen or toxin that originally triggered their creation. Mechanisms of Neutralization Once deployed, the antibodies produced by plasma cells execute several key defensive strategies.
Coordinating Immune Response Through Antibody and Complement Activation
In multiple myeloma, a cancer of plasma cells, these cells proliferate uncontrollably and produce excessive amounts of a single type of antibody, often leading to organ damage. The antibody molecules secreted by these cells can bind to pathogens and trigger a cascade of blood proteins that punch holes in microbial membranes, leading to cell lysis.
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