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Polyclonal antibodies (pAbs) are antibodies that are secreted by different B cell lineages within the body (whereas monoclonal antibodies come from a single cell lineage). They are a collection of immunoglobulin molecules that react against a specific antigen , each identifying a different epitope .
Hence the term "polyclonal", which derives from the words poly, meaning many, and clones from Greek klōn, meaning sprout or twig; [3] [4] [5] a clone is a group of cells arising from a common "mother" cell. The antibodies thus produced in a polyclonal response are known as polyclonal antibodies.
Clonality implies the state of a cell or a substance being derived from one source or the other. Thus there are terms like polyclonal—derived from many clones; oligoclonal [2] —derived from a few clones; and monoclonal—derived from one clone. These terms are most commonly used in context of antibodies or immunocytes.
Monoclonal antibodies can have monovalent affinity, binding only to the same epitope (the part of an antigen that is recognized by the antibody). [3] In contrast, polyclonal antibodies bind to multiple epitopes and are usually made by several different antibody-secreting plasma cell lineages.
For a more specific and robust treatment, purified polyclonal or monoclonal antibodies (mAb) can be used. Polyclonal antibodies are collection of antibodies that target the same pathogen but bind to different epitopes. Polyclonal antibodies are obtained from human donors or animals that have been exposed to the antigen.
Clonal antibodies can either be monoclonal or polyclonal. Monoclonal antibodies are clones of one antibody; therefore, monoclonal antibodies can only bind to one target. Polyclonal antibodies are clones of multiple antibodies and immune cells, so they can bind to various targets. [4] Recombinant clonal antibodies are produced through in-vitro ...
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The antibodies can be isolated from the animal's whole serum. Polyclonal antibody production will result in a mixture of different antibodies and will recognize multiple epitopes. Monoclonal antibodies are made by injecting the animal with the antigen of interest and then isolating an antibody-producing B cell, typically from the spleen.
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