PD-L1 antibody | knockout validation | Abcam ab205921

This is a knockout-validated antibody summary, based on the publications "Distinct roles of programmed death ligand 1 alternative splicing isoforms in colorectal cancer", as cited below [1], and "N6-methyladenosine-modified circIGF2BP3 inhibits CD8+ T-cell responses to facilitate tumor immune evasion by promoting the deubiquitination of PD-L1 in non-small cell lung cancer" for western blot knockout validation (figure s7j) [2]. Labome curates formal publications to compile a list of antibodies with unambiguous specificity within Validated Antibody Database (VAD).

PD-L1 antibody | knockout validation | Abcam ab205921 figure 1
Figure 1. Immunoblotting for the detection of PD‐L1 expression in RKO cells with the PD‐L1 gene knockout using CRISPR‐Cas9 technology. From [1].
Antibody information

Rabbit monoclonal IgG

Company: Abcam

Antibody: PD-L1

Catalog number: ab205921

Summary: Rabbit monoclonal antibody against recombinant full length protein corresponding to human PD-L1 (extracellular). The immunogen contains the specific extracellular domain of huPD-L1 (Phe19-Thr239). Reacts with human. Suitable for western blot, immunocytochemistry, immunohistochemistry (paraffin) and flow cytometry.

Validation Method

Western blot

Sample

Controla and PD‐L1-/- RKO cells.

Blocking agent

5% low‐fat milk at room temperature for 1 hour.

Primary incubation

Overnight at 4°C.

Secondary incubation

Secondary antibodies (Odyssey, Li‐COR, Bioscience) for 1 hour at room temperature.

Detection

Odyssey system.

References
  1. Wang C, Weng M, Xia S, Zhang M, Chen C, Tang J, et al. Distinct roles of programmed death ligand 1 alternative splicing isoforms in colorectal cancer. Cancer Sci. 2021;112:178-193 pubmed publisher
  2. Liu Z, Wang T, She Y, Wu K, Gu S, Li L, et al. N6-methyladenosine-modified circIGF2BP3 inhibits CD8+ T-cell responses to facilitate tumor immune evasion by promoting the deubiquitination of PD-L1 in non-small cell lung cancer. Mol Cancer. 2021;20:105 pubmed publisher