resistance of cloned 1f5 chimeric anti-cd20 antibody heavy-chain gene to dna polymerase due to a predicted hairpin structure

Resistance of Cloned 1F5 Chimeric Anti-CD20 Antibody Heavy-Chain Gene to DNA Polymerase due to a Predicted Hairpin Structure

Background: Formation of secondary structure such as DNA hairpins or loops may influence molecular genetics methods and PCR based approaches necessary for genetic engineering, in addition to gene regulation. Materials and Methods: A polymerase chain reaction with splice overlap extension (SOE-PCR) was used to create fully synthetic 1F5 chimeric anti-CD20 heavy- and light-chain genes. The chi...

Intracellular accumulation of the anti-CD20 antibody 1F5 in B-lymphoma cells.

In previous experiments, 125I-labeled 1F5 (anti-CD20)was found to kill B-lymphoma cells efficiently and specifically.Unexpectedly, the number of antibody (Ab) molecules taken up per cell was much larger than the number of antigen sites on the cell surface. The present studies were designed to explain this apparent discrepancy. Incubation with fluorophore-conjugated 1F5, using the Raji cell line...

Monoclonal antibody 1F5 (anti-CD20) serotherapy of human B cell lymphomas.

Four patients with refractory malignant B cell lymphomas were treated with continuous intravenous (IV) infusions of murine monoclonal antibody (MoAb) 1F5 (anti-CD20) over five to ten days. Dose-dependent levels of free serum 1F5 were detected in all patients. Two patients had circulating tumor cells and in both cases 90% of malignant cells were eliminated from the blood stream within four hours...

Development of a Novel Inhibitory Chimeric Anti-HER2 Monoclonal Antibody

Blood group incompatibility due to anti C antibody: a case report

Background and Aim: One of the main goals of blood transfusion medicine is to determine the compatibility of the blood products with the patients. Therefore, clinical and laboratory (serologic) evaluations should be done to determine the maximum compatibility (or minimum incompatibility). The most known blood groups is the ABO antigenic system and the most important of them is Rh system. Among ...

Monoclonal antibody to a DNA-binding domain of p53 mimics charge structure of DNA: anti-idiotypes to the anti-p53 antibody are anti-DNA.

Antibodies to DNA are important markers of various autoimmune diseases and can be pathogenic; however, their generation is not understood. We previously reported that anti-DNA antibodies could be induced in mice by idiotypic immunization to PAb-421, an antibody to a DNA-binding domain of p53. We now report that two monoclonal antibodies of moderate affinity (K(D) asymptotically equal to 10(-7))...