Journal: Frontiers in immunology
Article Title: Patients' IgLON5 autoantibodies interfere with IgLON5-protein interactions.
doi: 10.3389/fimmu.2023.1151574
Figure Lengend Snippet: FIGURE 2 Immunoblots of co-tranfected HEK cells immunoprecipitated with patients’ IgLON5 antibodies. HEK cells co-transfected with IgLON5 and each of the other IgLON family members: first row (IgLON5 + IgLON1), 2nd row IgLON2 (5+2), 3rd row (5+3), and 4th row (5+4). The 5th row corresponds to HEK cells transfected only with IgLON5, and the 6th row HEK cells co-transfected with IgLON5 and CASPR2 (5+C). Left column: Whole cell lysates (WCL); middle column: Immunoprecipitates of transfected HEK cells using patients’ IgLON5-abs (IP+); right column: Immunoprecipitates of transfected cells using Ctrl-abs (IP). Each row was incubated with commercial antibodies against the corresponding proteins: IgLON1, 2,3,4,5 and CASPR2.
Article Snippet: The presence of the interacting proteins was detected by incubating the membrane with the following antibodies (dilution 1:500, overnight at 4°C): IgLON1 (STJ94590), IgLON2 (STJ94442), IgLON3 (STJ116461), IgLON4 (STJ94394, St. John’s Laboratory, London, UK), KIDINS220 (21856-1-AP, Proteintech, Rosemont, IL, USA), IGSF21 (21465-1-AP; Proteintech), CACNA2D2 (SAB1401461, SIGMA) and CASPR2 (ab33994, Abcam) followed by incubation with appropriate secondary antibodies (dilution 1:1000) for 1 hour at room temperature.
Techniques: Western Blot, Immunoprecipitation, Transfection, Incubation