IgG2B
IgG2B plays a crucial role in the adaptive immune response, providing protection against a variety of pathogens.
Researchers studying IgG2B can optimize their studies using PubCcompare.ai, an AI-powered platform that enhances reproducibility and accuracy.
PubCompare.ai helps researchers discover protocols from literature, preprints, and patents, and uses AI-driven comparisons to identify the best protocols and products for IgG2B research.
By improving research efficiency and success, PubCompare.ai empowers scientists to advance their understanding of this important immunoglobulin subclass.
Most cited protocols related to «IgG2B»
For nFCM analysis, the sample stream is completely illuminated within the central region of the focused laser beam, and the detection efficiency is approximately 100%, which leads to accurate particle concentration measurement via single particle enumeration [49 (link),50 (link)]. The concentration of each EV sample was determined by employing 100 nm orange FluoSpheres of known particle concentration to calibrate the sample flow rate. Several dilutions were made to the orange FluoSpheres solution, and a linear correlation between particle concentration and detected event rate was obtained with R2 of 0.999 (data not shown). Regarding immunofluorescent staining, the following antibodies were purchased from BD Biosciences: PE-conjugated mouse anti-human CD9 antibody (clone M-L13), PE-conjugated mouse anti-human CD63 antibody (clone H5C6), PE-conjugated mouse anti-human CD81 antibody (clone JS-81), PE-conjugated mouse anti-human CD235a (clone GA-R2), PE-conjugated mouse anti-human CD45 (clone HI30), PE-conjugated mouse anti-human CD41a (clone HIP8), PE-conjugated mouse anti-human CD144 (clone 55-7H1), PE-conjugated mouse IgG1, κ (clone MOCP-21), and PE-conjugated mouse IgG2b, κ (clone 27–35). For phenotyping of EVs derived by HCT15 cells, EVs were isolated from 1 mL CCCM diluted to 12.5 mL with PBS by centrifugation once at 100,000 × g for 2 h at 4°C (Beckman Coulter X-90 centrifuge, SW 41 Ti rotor), and the pellet was resuspended in 50 μL PBS. EV preparation from PFP by UC or commercial kit was divided into 50 μL with a particle concentration of 6 × 108 particles/mL. Into each 50 μL EV sample, 20 μL of PE-conjugated antibody against CD9, CD63, CD81, CD235a, CD45, CD41a, CD144, IgG1 or IgG2b was added. The mixture was incubated at 37°C for 30 min and then washed twice with 1 mL PBS by UC at 100,000 × g for 17 min at 4°C (Beckman Coulter MAX-XP centrifuge, TLA-120.2 rotor). The pellet was resuspended in 50 μL PBS for nFCM analysis. For fluorescent labelling of phosphatidylserine (PS), all the other experimental procedures were the same as immunofluorescent staining except for replacing 20 μL PE-conjugated antibody with 5 μL PE-conjugated Annexin V (BD Bioscience). Meanwhile, the PBS buffer was replaced with 1 × annexin-binding buffer (Invitrogen, V13241) starting from EV preparation.
Flow cytometry panel for evaluation of mitochondrial ROS in BMDMs.
Target/Probe | Fluorochrome | Clone/ Cat. number |
---|---|---|
Live/Dead Calcein | Blue | BD Calcein Blue AM Fluorescent Dye |
Anti-mouse CD11b | PE-Cy7 | Clone: M1/70 |
MitoSOX™ | PE - Red | MitoSOX™ Red Mitochondrial Superoxide Indicator |
From the stock solution of MitoSOX Red, we suggest diluting 1/10 in PBS and then 1/100 into the final mix. This results in a final working concentration of 1/1000, or 5 µM.
Again, we determine one well for our unstained control and 1 well for MitoSOX Red FMO. The FMO consists of 50 µL of all dyes, except MitoSOX Red.
Pre-warm the mix (37 °C) and stain the cells as described above in the cell staining guide.
Most recents protocols related to «IgG2B»
Example 3
Serum was obtained from mice immunized with the composite influenza peptides Pep 63 and Pep 64 both in conjugated and unconjugated forms. These serum sample were tested for IgG1, IgG2a and IgG2b activity against Pep 3, Pep 6, Pep 10, and Pep 11 (Pep 11—the composite 3, 6 and 10 peptides).
With regard to Pep 3, Pep 6, Pep 10, and Pep 64, both conjugated and unconjugated, as compared to Pep 63 showed an overall greater IgG1 response (
With regard to Pep 3, Pep 6, and Pep 10, there was a minimal IgG2a response to either Pep 63 or Pep 64, whether in conjugated or unconjugated form (
With regard to Pep 3, Pep 6, Pep 10 there was a greater IgG2b response to Pep 64, conjugated, as compared to Pep 63 which mostly appeared after booster was administered (
Pep 64 (both conjugated and unconjugated) with the T-cell epitope at the N-terminal end induced increased serum antibody responses to the individual peptides across IgG1 and IgG2b isotypes, but not IgG2a. What this data clearly shows is that the location of the T cell epitope on an antigen can have a significant effect of how the antigen is seen and responded to by the host immune system. These data also indicate that T cell epitope placement can have a profound effect on both the Th-1 and Th-2 responses.
Images were captured with a Zeiss upright microscope (AxioImager M1, Oberkochen, Germany). To quantify the percentage of nuclei (DAPI+) expressing CD63, MyoVision software was used for automated analysis of nuclear density in cross-sections [39 (link)], and nuclei-expressing CD63 (identified as DAPI+/CD63+ events) were counted manually in a blinded manner by the same assessor for all sections using the Zen Blue software.