Recombinant antibody>hybridoma antibody：

Recombinant antibodies (such as rabbit monoclonal antibodies) are optimized through genetic engineering to have higher affinity and small inter batch differences (such as Abcam's RabMAb series and Cell Signaling Technology's recombinant monoclonal antibodies).

Avoid monoclonal antibodies from ascites sources:

Ascites antibodies may contain endogenous proteins in mice, such as IgG and cytokines, which can increase the background signal of ELISA. Okay, here is the continuation content:

The advantages of recombinant antibodies are not only reflected in the standardization of production processes, but also in their customizable properties. Through gene editing technology, scientists can precisely modify the Fc segment of antibodies (such as introducing point mutations to eliminate CDC effects) or Fab segment (such as humanized modification to reduce HAMA response). Taking the CHO-K1 cell line constructed by CRISPR-Cas9 technology as an example, the expression of IgG1 antibody fucosylation level can be reduced by 90%, significantly enhancing the ADCC effect.

In the quality control process, new generation mass spectrometry technologies such as LC-MS/MS can simultaneously detect antibody glycosylation distribution and post-translational modifications. A study showed that using UPLC-QTOF to analyze the N-glycation profile of anti-PD-1 antibodies can identify key quality attributes (CQAs) that traditional ELISA cannot recognize. This' Quality by Design '(QbD) concept is driving the transformation of antibody drugs from' experience based production 'to' digital production '.