Idiotype variants of 38C13, a murine B cell lymphoma, have been isolated by immunoselection with antiidiotype mAbs. The V region genes for the kappa light chains and mu heavy chains expressed by these tumor cells were sequenced and compared. There was no evidence for V region somatic point mutation in this tumor. However, while the heavy chain genes were all identical, the light chain genes wer...

On the cover: Structures of antigen binding fragments (Fabs) of lambda versus kappa anti-HIV envelope antibodies. Structures of Fab were superimposed based on light chain variable domain and colored green/yellow (lambda antibodies) and magenta/cyan (kappa antibodies) for light/ heavy chain, respectively. The complementary region first and third of light chain (CDR L1 and CDR L3) are highlighted...

Antibody variable regions are composed of a heavy and a light chain, and in humans, there are two light chain isotypes: kappa and lambda. Despite their importance in receptor editing, the light chain is often overlooked in the antibody literature, with the focus being on the heavy chain complementarity-determining region (CDR)-H3 region. In this paper, we set out to investigate the physicochemi...

Antibody variable regions are composed of a heavy and a light chain, and in humans, there are two light chain isotypes: kappa and lambda. Despite their importance in receptor editing, the light chain is often overlooked in the antibody literature, with the focus being on the heavy chain complementarity-determining region (CDR)-H3 region. In this paper, we set out to investigate the physicochemi...

To determine whether a foreign unrearranged immunoglobulin gene can be functionally rearranged and expressed in vivo, a rabbit b9 kappa light chain gene construct containing a single germ-line kappa chain variable (V) region gene (V kappa), the five kappa chain joining (J) segments (J kappa), and the kappa chain constant (C) region germ-line gene (C kappa) was introduced into fertilized mouse e...

Using automated measurements of kappa and lambda light chains and IgG, IgA, and IgM, we assessed the utility of the kappa/lambda ratio and the heavy chain/light chain ratio in characterizing monoclonal immunoglobulins previously identified by sensitive electrophoresis on agarose gel and typed by immunofixation or immunoelectrophoresis. We examined 348 selected samples, of which 165 contained mo...

Abstract A 69-year-old woman was referred to the dermatology department for evaluation of multiple widespread subcutaneous lesions involving neck, torso and limbs. These lesions, initially diagnosed in community as lipomas, had been slowly progressing size number 3 years. She remained systemically well. Her only medical history essential thrombocythaemia. took no regular medication. On examinat...

OBJECTIVE Helicobacter pylori provokes a host of immune alterations upon colonizing the gastric mucosa. DESIGN We report 22 individuals with confirmed Helicobacter pylori infection who were also managed for the concurrent elevation of immunoglobulin free light chain (kappa and lambda) levels. RESULT Of the 22 patients, 15 patients (68.2%) had elevated free light chain levels: 6 patients (40...

The human pre-B acute lymphoblastic leukemia cell line, BLIN-1, has been previously shown to undergo kappa light chain rearrangement in vitro, making it a valuable resource for analyzing pre-B to B cell differentiation. We have examined the recombination potential of BLIN-1 by characterizing several independently derived kappa-expressing subclones for DNA rearrangement and V kappa gene usage. A...