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AB21689

Anti-IRF5 antibody

2

(1 Review)

|

(25 Publications)

Anti-IRF5 antibody (ab21689) is a rabbit polyclonal antibody detecting IRF5 in Western Blot. Suitable for Human, Mouse, Rat.

- Over 20 publications
- Trusted since 2005

View Alternative Names

Interferon regulatory factor 5, IRF-5, IRF5

6 Images
Western blot - Anti-IRF5 antibody (AB21689)
  • WB

Lab

Western blot - Anti-IRF5 antibody (AB21689)

This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 2% Bovine Serum Albumin before being incubated with ab21689 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution ab133406.

All lanes:

Western blot - Anti-IRF5 antibody (ab21689) at 1 µg/mL

Lane 1:

HeLa Whole Cell Lysate at 20 µg

Lane 2:

Mouse Liver Tissue Lysate at 10 µg

Lane 3:

Mouse Kidney Tissue Lysate at 10 µg

Lane 4:

Rat Liver Tissue Lysate at 10 µg

Secondary

All lanes:

Peroxidase AffiniPure Goat Anti-Rabbit IgG (H+L) at 1/50000 dilution

Predicted band size: 56 kDa

Observed band size: 25 kDa,60 kDa,85 kDa

true

Exposure time: 8min

Western blot - Anti-IRF5 antibody (AB21689)
  • WB

Project

Western blot - Anti-IRF5 antibody (AB21689)

All lanes:

Western blot - Anti-IRF5 antibody (ab21689) at 1 µg/mL

Lane 1:

HeLa whole cell lysate at 20 µg

Lane 2:

HeLa whole cell lysate at 20 µg with Human IRF5 peptide (<a href='/en-us/products/unavailable/human-irf5-peptide-ab22411'>ab22411</a>)

Secondary

All lanes:

Alexa Fluor Goat polyclonal to IgG (700) at 1/10000 dilution

Predicted band size: 56 kDa

Observed band size: 60 kDa

false

Western blot - Anti-IRF5 antibody (AB21689)
  • WB

Project

Western blot - Anti-IRF5 antibody (AB21689)

All lanes:

Western blot - Anti-IRF5 antibody (ab21689) at 1 µg/mL

Lane 1:

Liver (Mouse) Tissue Lysate - normal tissue at 10 µg

Lane 2:

Kidney (Mouse) Tissue Lysate at 10 µg

Lane 3:

Liver (Rat) Tissue Lysate at 10 µg

Secondary

All lanes:

IRDye 680 Conjugated Goat Anti-Rabbit IgG (H+L) at 1/10000 dilution

Predicted band size: 56 kDa

Observed band size: 60 kDa

false

Western blot - Anti-IRF5 antibody (AB21689)
  • WB

CiteAb

Western blot - Anti-IRF5 antibody (AB21689)

Western Blotting using Anti-IRF5 antibody, ab21689. Publication image from Allouch, A. et al., 2022, Nat Commun, 36347876. Legend direct from paper.

Tumor cell phagocytosis triggers the proinflammatory activation of macrophages.a Schematic representation of the coculture of CMFDA-labeled MDMs with CMTMR-labeled malignant hematologic cells. b Confocal micrograph of MDMs and Jurkat cells after 8 h of coculture. c, d Percentage of phagocytosis of leukemia cells or PBLs (c) or CD34+ AML cells (d) in control (Co.)- or ZVAD (100 µM)-treated cocultures. e FACS dot plot of Phago+ MDMs or Phago- MDMs sorted after 2 h of coculture with MOLT4 cells. f, g Confocal micrographs and percentages of CMTMR+CMFDA+ MDMs at 2 h (**p = 0.0079) (f, g) and 96 h (h, i) after Phago+ MDMs and Phago- MDMs sorting. j–n Phago+ MDMs were analyzed in comparison to Phago- MDMs to characterize modulated genes by a microarray (**p = 0.0022, *p = 0.0152) (j), CD163 membrane expression by FACS (**p = 0.0039) (k), and IRF5 expression by western blot (WB) analysis (l) and the supernatant (SN) was evaluated for indicated proinflammatory cytokines by WB analysis (l) or for IFNγ by a cytokine microarray (*p = 0.0286) (m) or ELISA (***p = 0.0008) (n) at 96 h (j, k, m) and 7 d (l, n) after FACS sorting. o, p Transwell coculture model of Phago+ MDMs and Phago- MDMs at 2 h after FACS sorting (o), and iNOS expression identified by WB analysis of Phago- MDMs cocultured in the bottom chambers for 15 d (p). In b, l, p and e, f, h, the data are representative of n = 3 and n = 5 donors. In c, n, d, and g, i, the data are presented as the mean±SEM from n = 3, n = 6, and n = 5 donors. In d, the CD34+ cells were from n = 4 AML patients. In j, box plots show centre line as median, box limits as upper and lower quartiles, and whiskers as a minimum to maximum values, from n = 3 donors. In k and m, the data are donor matched from n = 9 and n = 4 donors. Exact p-values are indicated and determined with two- (g) or one-tailed (m) unpaired Mann-Whitney test, the Kolmogorov–Smirnov test (j), a two-tailed paired Wilcoxon test (k), and a two-tailed unpaired t test (n). Source data are provided as a Source Data file.

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Western blot - Anti-IRF5 antibody (AB21689)
  • WB

CiteAb

Western blot - Anti-IRF5 antibody (AB21689)

Western Blotting using Anti-IRF5 antibody, ab21689. Publication image from Nishiyama, A. et al., 2014, Nat Commun, 24818655. Legend direct from paper.

IRF5 is required for fibronectin-mediated upregulation of P2X4R in microglia.(a) Representative western immunoblot of IRF5 in whole-cell lysate, and in nuclear or cytosolic components of control or IRF5 shRNA-transduced BV2 cells treated with fibronectin for 4 h. (b) Relative band density ratios of IRF5 (normalized to β-actin, lamin B orα-tublin) from control or IRF5 shRNA-transduced BV2 cells treated with fibronectin (n=4; *P<0.05, ***P<0.001). (c) Real-time PCR analysis of P2rx4 mRNA in control or Irf5 shRNA-transduced BV2 cells 6 h after fibronectin treatment. Values represent the relative ratio of P2rx4 mRNA (normalized to the value for 18s mRNA) to control shRNA-transduced cells (n=6; *P<0.05, **P<0.01, ***P<0.001). (d) Representative western immunoblot of P2X4R in control or IRF5 shRNA-transduced BV2 cells 6 h after fibronectin treatment. (e) Relative band density ratios of P2X4R (normalized to β-actin) to control shRNA-transduced cells (n=6; ***P<0.001). (f) Schematic of the four interferon-stimulated response element (ISRE) sites on the promoter region of P2X4R. (g) Chromatin immunoprecipitation (ChIP)-qPCR assay of P2rx4 promoter fragments immunoprecipitated by antibodies for IRF1, IRF3, IRF5, IRF7 or IRF9 in BV2 cells with or without fibronectin, respectively. Values represent the relative ratio of the values of BV2 cells with fibronectin (normalised to the value for normal IgG) to that of cells without fibronectin. Data are representative of three experiments. Values are the mean±s.e.m. Full-size blots are shown in Supplementary Fig. 9.

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Western blot - Anti-IRF5 antibody (AB21689)
  • WB

CiteAb

Western blot - Anti-IRF5 antibody (AB21689)

Western Blotting using Anti-IRF5 antibody, ab21689. Publication image from Nishiyama, A. et al., 2014, Nat Commun, 24818655. Legend direct from paper.

Loss of IRF5 abrogates PNI-induced tactile allodynia without affecting acute pain sensation or inflammatory pain.(a,b) PWT of Irf5−/− and WT littermates (Irf5+/+) before and after PNI (n=6; ***P<0.001 versus Pre; ##P<0.01, ###P<0.001 versus the ipsilateral side of WT mice). (c) Upper : representative western immunoblots of IRF5 in the spinal cords of mice treated with control or IRF8 siRNAs 7 days after PNI. Lower : relative band density ratios of IRF5 (normalized to β-actin) to control RNA (n=6). (d) Reversal of PNI-induced allodynia by intrathecal administration of IRF5 siRNA (20 pmol) once a day for 2 days (on day 5 and 6 after PNI) in WT mice (n=6). (e) Hot-plate test of which values represent the latencies for animals to lick their hindpaws or jump (n=6). (f) Tail-flick test of which values represent the latencies to flick their tail from the heat source (n=6). (g) Formalin test of which values indicate the duration of nociceptive behaviours (n=8). (h) Total duration (sec) of nociceptive behaviours for 0–5 min (1st phase) and for 10–60 min (2nd phase) (n=8). (i) PWT of Irf5+/+ and Irf5−/− mice before and after intraplantar CFA injection (n=4, **P<0.01, ***P<0.001 versus Pre). Values are the mean±s.e.m. Full-size blots are shown in Supplementary Fig. 12.

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Key facts

Host species

Rabbit

Clonality

Polyclonal

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

WB

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

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Product details

What is this antibody validated in?
Anti-IRF5 antibody (ab21689) is a rabbit polyclonal antibody and is validated for use in Western Blot (WB) in Human, Mouse, Rat samples.

What is the molecular weight of IRF5?
Anti-IRF5 (ab21689) specifically detects a band for IRF5 (UniProt: Q13568) at a molecular weight of 58kDa.

Trusted by the scientific community
Anti-IRF5 (ab21689) was first used in a scientific publication in 2005 and has been cited over 20 times in peer-reviewed journals.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Immunogen
Storage buffer
pH: 7.4 Preservative: 0.02% Sodium azide Constituents: PBS, 1% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

IRF5 or Interferon Regulatory Factor 5 is a member of the IRF family of transcription factors. This protein weighs approximately 56 kDa and is expressed in cells of the immune system including B cells dendritic cells and macrophages. IRF5 plays an important role in regulating the transcription of interferon-stimulated genes following a viral infection. It acts by binding to specific DNA sequences initiating transcription processes that are important for the antiviral response.
Biological function summary

IRF5 influences the immune response through the regulation of cytokine production. It activates genes involved in producing pro-inflammatory cytokines such as TNF-α and IL-6 which are important for clearing viral infections and activating immune cells. IRF5 does not usually form part of a protein complex but it interacts closely with TRAF6 and MyD88 for its activation. Its pivotal role in cytokine production highlights its importance in controlling inflammation.

Pathways

IRF5 is an important component of the Toll-like receptor (TLR) signaling pathway and plays a role in the MyD88-dependent pathway. In this context IRF5 gets activated by TLRs interacting with MyD88 and TAK1 to enhance the transcription of important genes for immune response. It is also closely connected to the IRF3 protein which shares similar activation pathways and can similarly initiate an antiviral state.

Defects or dysregulation in IRF5 function are linked to autoimmune diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis. In SLE IRF5 influences autoantibody production contributing to disease development. It works alongside other regulatory proteins involved in autoimmunity including IFN-α and STAT4 which also play significant roles in modulating immune responses. Understanding IRF5's role in these conditions could present new opportunities for therapeutic interventions using IRF5 inhibitors.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Transcription factor that plays a critical role in innate immunity by activating expression of type I interferon (IFN) IFNA and INFB and inflammatory cytokines downstream of endolysosomal toll-like receptors TLR7, TLR8 and TLR9 (PubMed : 11303025, PubMed : 15695821, PubMed : 22412986, PubMed : 25326418, PubMed : 32433612). Regulates the transcription of type I IFN genes (IFN-alpha and IFN-beta) and IFN-stimulated genes (ISG) by binding to an interferon-stimulated response element (ISRE) in their promoters (By similarity). Can efficiently activate both the IFN-beta (IFNB) and the IFN-alpha (IFNA) genes and mediate their induction downstream of the TLR-activated, MyD88-dependent pathway (By similarity). Key transcription factor regulating the IFN response during SARS-CoV-2 infection (PubMed : 33440148).
See full target information IRF5

Publications (25)

Recent publications for all applications. Explore the full list and refine your search

Nature communications 13:6739 PubMed36347876

2022

CDKN1A is a target for phagocytosis-mediated cellular immunotherapy in acute leukemia.

Applications

Unspecified application

Species

Unspecified reactive species

Awatef Allouch,Laurent Voisin,Yanyan Zhang,Syed Qasim Raza,Yann Lecluse,Julien Calvo,Dorothée Selimoglu-Buet,Stéphane de Botton,Fawzia Louache,Françoise Pflumio,Eric Solary,Jean-Luc Perfettini

Nature communications 12:6702 PubMed34795257

2021

Defactinib inhibits PYK2 phosphorylation of IRF5 and reduces intestinal inflammation.

Applications

Unspecified application

Species

Unspecified reactive species

Grigory Ryzhakov,Hannah Almuttaqi,Alastair L Corbin,Dorothée L Berthold,Tariq Khoyratty,Hayley L Eames,Samuel Bullers,Claire Pearson,Zhichao Ai,Kristina Zec,Sarah Bonham,Roman Fischer,Luke Jostins-Dean,Simon P L Travis,Benedikt M Kessler,Irina A Udalova

Molecular therapy. Nucleic acids 25:708-715 PubMed34589288

2021

siRNA-loaded biodegradable lipid nanoparticles ameliorate concanavalin A-induced liver injury.

Applications

Unspecified application

Species

Unspecified reactive species

Wataru Kawase,Daisuke Kurotaki,Yuta Suzuki,Hiroshi Ishihara,Tatsuma Ban,Go R Sato,Juri Ichikawa,Hideyuki Yanai,Tadatsugu Taniguchi,Kappei Tsukahara,Tomohiko Tamura

Nature communications 12:4813 PubMed34376664

2021

Altered function and differentiation of age-associated B cells contribute to the female bias in lupus mice.

Applications

Unspecified application

Species

Unspecified reactive species

Edd Ricker,Michela Manni,Danny Flores-Castro,Daniel Jenkins,Sanjay Gupta,Juan Rivera-Correa,Wenzhao Meng,Aaron M Rosenfeld,Tania Pannellini,Mahesh Bachu,Yurii Chinenov,Peter K Sculco,Rolf Jessberger,Eline T Luning Prak,Alessandra B Pernis

Nature communications 12:4379 PubMed34282144

2021

Genetic and chemical inhibition of IRF5 suppresses pre-existing mouse lupus-like disease.

Applications

Unspecified application

Species

Unspecified reactive species

Tatsuma Ban,Masako Kikuchi,Go R Sato,Akio Manabe,Noriko Tagata,Kayo Harita,Akira Nishiyama,Kenichi Nishimura,Ryusuke Yoshimi,Yohei Kirino,Hideyuki Yanai,Yoshiko Matsumoto,Shuichi Suzuki,Hiroe Hihara,Masashi Ito,Kappei Tsukahara,Kentaro Yoshimatsu,Tadashi Yamamoto,Tadatsugu Taniguchi,Hideaki Nakajima,Shuichi Ito,Tomohiko Tamura

Science advances 7: PubMed33523878

2021

TRAF6-IRF5 kinetics, TRIF, and biophysical factors drive synergistic innate responses to particle-mediated MPLA-CpG co-presentation.

Applications

Unspecified application

Species

Unspecified reactive species

P Pradhan,R Toy,N Jhita,A Atalis,B Pandey,A Beach,E L Blanchard,S G Moore,D A Gaul,P J Santangelo,D M Shayakhmetov,K Roy

Immunity 54:235-246.e5 PubMed33357409

2020

The persistence of interleukin-6 is regulated by a blood buffer system derived from dendritic cells.

Applications

Unspecified application

Species

Unspecified reactive species

Ashraf S Yousif,Larance Ronsard,Pankaj Shah,Tatsushi Omatsu,Maya Sangesland,Thalia Bracamonte Moreno,Evan C Lam,Vladimir D Vrbanac,Alejandro B Balazs,Hans-Christian Reinecker,Daniel Lingwood

EMBO molecular medicine 12:e13038 PubMed32816392

2020

Monocytopenia, monocyte morphological anomalies and hyperinflammation characterise severe COVID-19 in type 2 diabetes.

Applications

Unspecified application

Species

Unspecified reactive species

Fawaz Alzaid,Jean-Baptiste Julla,Marc Diedisheim,Charline Potier,Louis Potier,Gilberto Velho,Bénédicte Gaborit,Philippe Manivet,Stéphane Germain,Tiphaine Vidal-Trecan,Ronan Roussel,Jean-Pierre Riveline,Elise Dalmas,Nicolas Venteclef,Jean-François Gautier

Nucleic acids research 48:589-604 PubMed31799619

2019

Specific enhancer selection by IRF3, IRF5 and IRF9 is determined by ISRE half-sites, 5' and 3' flanking bases, collaborating transcription factors and the chromatin environment in a combinatorial fashion.

Applications

Unspecified application

Species

Unspecified reactive species

Mária Csumita,Attila Csermely,Attila Horvath,Gergely Nagy,Fanny Monori,Loránd Göczi,Hans-Acha Orbea,Walter Reith,Lajos Széles

Cell reports 28:3367-3380.e8 PubMed31553907

2019

GEF-H1 Signaling upon Microtubule Destabilization Is Required for Dendritic Cell Activation and Specific Anti-tumor Responses.

Applications

Unspecified application

Species

Unspecified reactive species

Abhishek S Kashyap,Laura Fernandez-Rodriguez,Yun Zhao,Gianni Monaco,Marcel P Trefny,Naohiro Yoshida,Kea Martin,Ashwani Sharma,Natacha Olieric,Pankaj Shah,Michal Stanczak,Nicole Kirchhammer,Sung-Moo Park,Sebastien Wieckowski,Heinz Laubli,Rachid Zagani,Benjamin Kasenda,Michel O Steinmetz,Hans-Christian Reinecker,Alfred Zippelius
View all publications

Product promise

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