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Only one type of light chain is present in a typical antibody, thus the two light chains of an individual antibody are identical. Each light chain is composed of two tandem immunoglobulin domains: one constant (C L) domain; one variable domain (V L) that is important for binding antigen; The approximate length of a light chain protein is from ...
AL amyloidosis is caused by the deposition of abnormal antibody free light chains. The abnormal light chains are produced by monoclonal plasma cells, and, although AL amyloidosis can occur without diagnosis of another disorder, it is often associated with other plasma cell disorders, such as multiple myeloma and Waldenström's macroglobulinemia. [6]
Serum protein electrophoresis showing a paraprotein (spike/peak in the gamma zone) in a patient with multiple myeloma.. A myeloma protein is an abnormal antibody (immunoglobulin) or (more often) a fragment thereof, such as an immunoglobulin light chain, that is produced in excess by an abnormal monoclonal proliferation of plasma cells, typically in multiple myeloma or Monoclonal gammopathy of ...
In addition, light and or heavy chains (the building blocks of antibodies) may be secreted in isolation: κ- or λ-light chains or any of the five types of heavy chains (α-, γ-, δ-, ε- or μ-heavy chains). People without evidence of a monoclonal protein may have "nonsecretory" myeloma (not producing immunoglobulins); this represents about 3 ...
Anti-Lambda Light Chain Type Description; Anti-Lambda Light Chain [N10/2] This is a recombinant monoclonal antibody to the Lambda light chain. It does not cross react with Kappa light chains. N10/2 most importantly recognizes pathologies such as leukemias, plasmacytomas, and non-Hodgkin's lymphomas. [22]
Structure of a BiTE. V H: Heavy chain variable regions. V L: Light chain variable regions. Different specificity is marked with different colours and shapes. The arrows point from N-to C-terminus. Bi-specific T-cell engager (BiTE) is a class of artificial bispecific monoclonal antibodies that are investigated for use as anti-cancer drugs.
Double staining with light chain antibodies and with T and B cell markers can indicate the neoplastic origin of a lymphoma. [11] One study has reported the isolation of a hybridoma cell line (clone 1E10), which produces a monoclonal antibody (IgM, k isotype). This monoclonal antibody shows specific immuno-cytochemical staining of nucleoli. [12]
In practice, this is inferred by the detection of only one of the mutually exclusive antibody light chains, kappa or lambda, on the entire population of the abnormal B cells. Normal B lymphocytes consist of a stew of different antibody-producing cells, resulting in a mixture of both kappa- and lambda-expressing cells.