IRF3 抗体 (YA334)

IRF3 Antibody (YA334) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to IRF3.

IRF3 是一种关键的转录调节因子，在协调针对 DNA 和 RNA 病毒的 I 型干扰素 (IFN) 依赖性免疫反应中发挥着关键作用。它通过与启动子中的干扰素刺激反应元件结合来调节 I 型 IFN 基因（IFN-α 和 IFN-β）和 IFN 刺激基因的转录，在激活 IFN-β 基因方面表现出更大的效力。在未感染的细胞中，IRF3 在细胞质中保持非活性状态，但在病毒感染后，双链 RNA 或 Toll 样受体信号传导的识别导致其被 IKBKE 和 TBK1 激酶磷酸化。这种磷酸化会诱导构象变化，促进二聚化、核定位以及与 CREB 结合蛋白的结合，形成 dsRNA 激活因子 1 (DRAF1)。该复合物激活 I 型 IFN 和 IFN 刺激基因的转录，驱动基因诱导的早期和晚期。在没有病毒感染的情况下，IRF3 作为单体维持在自动抑制状态，并且在 TBK1 和 IKBKE 磷酸化后释放其用于 DNA 结合和二聚化以及核定位。这种磷酸化是响应病毒 RNA、胞质 DNA 或细菌脂多糖而发生的，启动涉及先天接头蛋白（MAVS、STING1 或 TICAM1）的级联反应，最终激活 IRF3，随后在细胞核中诱导 IFN。

Free

Q14653

Predicted band size: 47 kDa; Observed band size: 55 kDa

Protein A affinity purified.

Cytoplasm, Nucleus.

Non-conjugated

Unmodified

AB_3102577

Immunology

Primary Antibody; Recombinant Rabbit Monoclonal Antibody

Recombinant, Monoclonal

Rabbit

Human, Mouse

WB: 1:500-1:5000; ICC/IF: 1:50-1:200; IHC-P: 1:50-1:200; FC: 1:50-1:100

• 
  Western blot analysis of extracts from Hela (lane 2(20μg) , Jurkat (lane 3(20μg), A549 (lane 4(20μg) and HEK293(lane 5(20μg) using IRF3(HY-P80504) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature.
• 
  Immunocytochemistry analysis of Hela cells labeling IRF3 with IRF3 Antibody (HY-P80504)at 1/50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 for 10 minutes at room temperature, then blocked with QuickBlock™ Blocking Buffer for Immunol Staining for 10 min at room temperature. Cells were then incubated with IRF3 Antibody (HY-P80504) at 1/50 dilution in QuickBlock™ Blocking Buffer for Immunol Staining at 4 ℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L（HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
• 
  Immunohistochemical analysis of paraffin-embedded Mouse colon tissue using IRF3 Antibody. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HY-P80504, 1/500) in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
• 
  Immunohistochemical analysis of paraffin-embedded Mouse colon tissue using IRF3 Antibody. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HY-P80504, 1/500) in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
• 
  Flow cytometric analysis of 1X10^6 Jurkat cells labeling IRF3 Antibody (HY-P80504, red). Cells were fixed with 4% paraformaldehyde and permeabilised with 90% methanol. Then stained with the primary antibody at 1/1000 dilution for an hour at 4℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L (HY-P8002) was used as the secondary antibody at 1/1,000 dilution for 30 minutes at 4℃. Rabbit IgG Isotype Control (HY-P80879, blue) was used as the isotype control, cells without incubation with primary antibody were used as the unlabeled control (black).

WB, ICC/IF, IHC-P, FC

液体

Supplied in 1*TBS (pH7.4), 0.05% BSA and 40% Glycerol. Preservative: 0.05% Sodium Azide.

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping with blue ice.

IgG

Endogenous

Synthetic peptide corresponding to Human IRF3.AA range:71-120.