GPNMB, Abcam, ab222109

Our team has carried out deep research in the published scientific literature to identify papers and reports using antibodies directed against human GPNMB and followed up by extraction and evaluation of the available data to assess its performance according to pAbmAbs rating criteria.

YCharOS is here conducting a large head-to-head study comparing 20 commercial research antibodies against human GPNMB.

The collection of antibodies was tested using U-87 MG WT and GPNMB KD cells in the applications WB (WT and KD cell lysates/60 µg protein), IP (WT cell lysate) and IF (WT and KD cells) according to YCharOS standard protocols (see reference). siRNA technology was used to knockdown (KD) the target gene.

In WB (1:1000 Antibody dilution) ab222109 detected a double band of appr. 80 and 100 kDa in control lysate not observed in KD lysate. Only a non-specific signal was detected following IP (2 µg Ab used). In IF (1:250 antibody dilution) comparable staining intensities were observed in both KD and control cells.

We highly encourage other scientists to share their observations.