700226

antibody from Invitrogen Antibodies

Targeting: IRF2

Western blot (Supportive data in Antibodypedia)

Immunocytochemistry (Supportive data in Antibodypedia)

Immunohistochemistry (Supportive data in Antibodypedia)

Flow cytometry (Supportive data in Antibodypedia)

Chromatin Immunoprecipitation (Supportive data in Antibodypedia)

Other assay (Supportive data in Antibodypedia)

Antibody Data

Product number

700226

Provider

Invitrogen Antibodies

Product name

IRF2 Recombinant Rabbit Monoclonal Antibody (B-80 H53L46)

Antibody type

Monoclonal

Antigen

Recombinant full-length protein

Reactivity

Human, Mouse, Rat

Host

Rabbit

Isotype

IgG

Antibody clone number

B-80 H53L46

Vial size

100 µg

Concentration

0.5 mg/mL

Storage

Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.

References

Submitted references

Cryptotanshinone Protects Cartilage against Developing Osteoarthritis through the miR-106a-5p/GLIS3 Axis.

Ji Q, Qi D, Xu X, Xu Y, Goodman SB, Kang L, Song Q, Fan Z, Maloney WJ, Wang Y
Molecular therapy. Nucleic acids 2018 Jun 1;11:170-179

Western blot

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Western blot analysis was performed on whole cell extracts (30 µg lysate) of MCF7 (Lane 1), Jurkat (Lane 2), HT-29 (Lane 3), Raji (lane 4), HeLa (lane 5), HeLa treated for 40 minutes with 100 ng/mL of IFN alpha (lane 6), Rat Stomach (lane 7), Mouse Small Intestine (lane 8), Mouse Colon (lane 9) and Mouse Placenta (lane 10). The blots were probed with Anti-IRF-2 Recombinant Rabbit Monoclonal Antibody (Product # 700226, 4-6 µg/mL) and detected by chemiluminescence using Goat anti-Rabbit IgG (H+L) Superclonal™ Secondary Antibody, HRP conjugate (Product # A27036, 0.4 µg/mL, 1:2500 dilution). Two bands ~ 40 and 58 kDa corresponding to IRF-2 was observed across cell lines and tissues tested expect for Mouse placenta. Known quantity of protein samples were electrophoresed using Novex® NuPAGE® 12 % Bis-Tris gel (Product # NP0342BOX), XCell SureLock™ Electrophoresis System (Product # EI0002) and Novex® Sharp Pre-Stained Protein Standard (Product # LC5800). Resolved proteins were then transferred onto a nitrocellulose membrane with iBlot® 2 Dry Blotting System (Product # IB21001). The membrane was probed with the relevant primary and secondary Antibody following blocking with 5 % skimmed milk. Chemiluminescent detection was performed using Pierce™ ECL Western blotting Substrate (Product # 32106).

Immunocytochemistry

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Immunofluorescent analysis of IRF-2 in HeLa cells using an IRF-2 recombinant rabbit monoclonal antibody (Product # 700226) at a dilution of 5 µg/mL followed by detection using an Alexa Fluor 488-conjugated goat anti-rabbit secondary antibody at a dilution of 1:1000. Cells were fixed using methanol fixation. The nuclear localization of IRF2 is shown in green, while nuclei were stained using SlowFade GOLD with DAPI (Product # S36938), shown in blue.

Immunohistochemistry

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Immunohistochemistry analysis of IRF2 showing staining in the nucleus of paraffin-embedded human T cell lymphoma (right) compared to a negative control without primary antibody (left). To expose target proteins, antigen retrieval was performed using 10mM sodium citrate (pH 6.0), microwaved for 8-15 min. Following antigen retrieval, tissues were blocked in 3% H2O2-methanol for 15 min at room temperature, washed with ddH2O and PBS, and then probed with a IRF2 Recombinant Rabbit Monoclonal Antibody (Product # 700226) diluted in 3% BSA-PBS at a dilution of 1:20 overnight at 4°C in a humidified chamber. Tissues were washed extensively in PBST and detection was performed using an HRP-conjugated secondary antibody followed by colorimetric detection using a DAB kit. Tissues were counterstained with hematoxylin and dehydrated with ethanol and xylene to prep for mounting.

Flow cytometry

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Flow cytometry analysis of IRF-2 was done on MCF7 cells treated with IFN alpha (100ng/mL, 30 minutes). Cells were fixed with 70% ethanol for 10 minutes, permeabilized with 0.25% Triton™ X-100 for 20 minutes, and blocked with 5% BSA for 30 minutes at room temperature. Cells were labeled with ABfinity™ IRF-2 Recombinant Rabbit Monoclonal Antibody (700226, red histogram) or with rabbit isotype control (pink histogram) at 3-5 ug/million cells in 2.5% BSA. After incubation at room temperature for 2 hours, the cells were labeled with Alexa Fluor® 488 Goat Anti-Rabbit Secondary Antibody (A11008) at a dilution of 1:400 for 30 minutes at room temperature. The representative 10,000 cells were acquired and analyzed for each sample using an Attune® Acoustic Focusing Cytometer. The purple histogram represents unstained control cells and the green histogram represents no-primary-antibody control.

Chromatin Immunoprecipitation

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Chromatin immunoprecipitation analysis of IRF-2 was performed using cross-linked chromatin from 1 x 10^6 HCT116 human colon carcinoma cells treated with serum for 0, 15, and 60 minutes. Immunoprecipitation was performed using a multiplex microplate Matrix ChIP assay (see reference for Matrix ChIP protocol: http://www.ncbi.nlm.nih.gov/pubmed/22098709) with 1.0 µL/100 µL well volume of an IRF-2 rabbit monoclonal antibody (Product # 700226). Chromatin aliquots from ~1 x 10^5 cells were used per ChIP pull-down. Quantitative PCR data were done in quadruplicate using 1 µL of eluted DNA in 2 µL SYBR real-time PCR reactions containing primers to amplify the promoter region of human UBE2B, or the imprinting control region (ICR) of the human H19 locus. PCR calibration curves were generated for each primer pair from a dilution series of sheared total genomic DNA. Quantitation of immunoprecipitated chromatin is presented as signal relative to the total amount of input chromatin. Results represent the mean +/- SEM for three experiments. A schematic representation of the human UBE2B and H19 loci are shown above the data where boxes represent exons (grey boxes = translated regions, white boxes = untranslated regions), the zigzag lines represent introns, and the straight line represents upstream sequence. Regions amplified by UBE2B and H19 primers are represented by black bars. Data courtesy of the Innovators Program.

Other assay

Supportive validation

Submitted by

Invitrogen Antibodies (provider)

Main image

Experimental details

Figure 4 CTS Promotes the Expression of miR-106a-5p through the Recruitment of PAX5 to the Promoter of miR-106a-5p (A) Luciferase activity of different miR-106a-5p promoter constructs in cultured human chondrocytes with or without CTS stimulation. P1, promoter (-186 bp); P2, promoter (-439 bp); P3, promoter (-761 bp); P4, promoter (-1,000 bp); P5, mutated promoter (-761 bp). (B) Luciferase assay in cultured human chondrocytes infected with FLAG-tagged IRF2 or PAX5 or STAT4 and P5. Immunoblot shows the expression of IRF2, PAX5, and STAT4 with anti-FLAG. (C and D) Cultured human chondrocytes were infected with the PAX5 plasmid (C) and the vector control or shRNA for PAX5 (D), followed by stimulation with CTS as described in the Methods section. Immunoblot indicates the expression of PAX5. (E) Chromatin immunoprecipitation (ChIP) assay for PAX5 occupancy on the miR-106a-5p promoter or upstream of the promoter in cultured human chondrocytes. Each bar represents the mean +- SD of at least three independent experiments performed in triplicate. *p < 0.05, **p < 0.01.