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AB228977

Anti-SIGIRR antibody [EPR22438-93]

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(5 Publications)

Rabbit Recombinant Monoclonal SIGIRR antibody. Suitable for IP, WB, Flow Cyt (Intra), IHC-P and reacts with Mouse, Rat, Human samples. Cited in 5 publications.

View Alternative Names

UNQ301/PRO342, SIGIRR, Single Ig IL-1-related receptor, Single Ig IL-1R-related molecule, Single immunoglobulin domain-containing IL1R-related protein, Toll/interleukin-1 receptor 8, TIR8

9 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

Immunohistochemical analysis of paraffin-embedded Human colon tissue labeling SIGIRR with ab228977 at 1/1000 dilution followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101). Positive staining on human colon (PMID : 21077278) The section was incubated with ab228977 for 30 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with Hematoxylin.

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101).

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

Immunohistochemical analysis of paraffin-embedded Human kidney tissue labeling SIGIRR with ab228977 at 1/1000 dilution followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101). Positive staining on human kidney (PMID : 14715412, 12925853) The section was incubated with ab228977 for 30 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with Hematoxylin.

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101).

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

Immunohistochemical analysis of paraffin-embedded Mouse kidney tissue labeling SIGIRR with ab228977 at 1/1000 dilution followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101). Positive staining on mouse kidney (PMID : 14715412, 12925853). The section was incubated with ab228977 for 30 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with Hematoxylin.

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101).

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

Immunohistochemical analysis of paraffin-embedded Rat kidney tissue labeling SIGIRR with ab228977 at 1/1000 dilution followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101). Positive staining on rat kidney (PMID : 14715412, 12925853). The section was incubated with ab228977 for 30 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with Hematoxylin.

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101).

Flow Cytometry (Intracellular) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • Flow Cyt (Intra)

Unknown

Flow Cytometry (Intracellular) - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

Intracellular flow cytometric analysis of 4% paraformaldehyde-fixed, 90% methanol-permeabilized MEF (mouse embryonic fibroblast (immortalized)) (Left) / Hepa1-6 (mouse hepatoma epithelial cell line) (Right) cells labelling SIGIRR with ab228977 at 1/600 dilution (Red) compared with a Rabbit monoclonal IgG (ab172730) (Black) isotype control and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue).

Goat anti rabbit IgG (Alexa Fluor� 488, ab150077) at 1/2000 dilution was used as the secondary antibody.

Negative control : MEF (PMID 12925853).

Immunoprecipitation - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • IP

Unknown

Immunoprecipitation - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

IGFBP5 was immunoprecipitated from 0.35 mg Hepa1-6 (mouse hepatoma epithelial cell line) whole cell lysate 10μg with ab254324 at 1/30 dilution. Western blot was performed on the immunoprecipitate using ab228977 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used as the secondary antibody at 1/5000 dilution.

Lane 1 : Hepa1-6 (mouse hepatoma epithelial cell) whole cell lysate 10μg

Lane 2 : ab254324 IP in Hepa1-6 whole cell lysate

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab228977 in Hepa1-6 whole cell lysate.

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 5 seconds.

All lanes:

Immunoprecipitation - Anti-SIGIRR antibody [EPR22438-93] (ab228977)

Predicted band size: 46 kDa

Observed band size: 80 kDa

false

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • WB

Unknown

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

The different apparent molecular weights are due to different levels of glycosylation. (PMID : 26344057).

Exposure times.
Lane 1 : 48 seconds; Lane 2 : 7.75 seconds; Lane 3 : 70 seconds; Lane 4 : 3 minutes.

Blocking/diluting buffer and concentration : 5% NFDM/TBST.

All lanes:

Western blot - Anti-SIGIRR antibody [EPR22438-93] (ab228977) at 1/1000 dilution

Lane 1:

Human fetal kidney tissue lysate at 20 µg

Lane 2:

Rat liver tissue lysate at 20 µg

Lane 3:

Mouse kidney tissue lysate at 20 µg

Lane 4:

Mouse spleen tissue lysate at 20 µg

Secondary

Lane 1:

Western blot - VeriBlot for IP Detection Reagent (HRP) (<a href='/en-us/products/reagents/veriblot-for-ip-detection-reagent-hrp-ab131366'>ab131366</a>) at 1/1000 dilution

Lanes 2 - 4:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 46 kDa

Observed band size: 80 kDa

false

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • WB

Unknown

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

The different apparent molecular weights are due to different levels of glycosylation. (PMID : 26344057).

Negative control : MEF (PMID 12925853)

Blocking/Diluting buffer and concentration : 5% NFDM/TBST.

Exposure times.

Lane 1 : 15 seconds; Lanes 2-6 : 3 minutes.

All lanes:

Western blot - Anti-SIGIRR antibody [EPR22438-93] (ab228977) at 1/1000 dilution

Lanes 1 and 5:

Hepa1-6 (mouse hepatoma epithelial cell), whole cell lysate at 20 µg

Lane 2:

MEF (immortalized mouse embryonic fibroblasts), whole cell lysate at 20 µg

Lane 3:

Mouse stomach tissue lysate at 20 µg

Lane 4:

Mouse pancreas tissue lysate at 20 µg

Lane 6:

Rat stomach tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 46 kDa

Observed band size: 80 kDa

false

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)
  • WB

Unknown

Western blot - Anti-SIGIRR antibody [EPR22438-93] (AB228977)

The molecular weight observed is consistent with what has been described in the literature (PMID : 26344057).

Blocking/Diluting buffer and concentration : 5% NFDM/TBST

Exposure time : 92 seconds.

All lanes:

Western blot - Anti-SIGIRR antibody [EPR22438-93] (ab228977) at 1/1000 dilution

Lane 1:

Mouse kidney tissue lysate at 20 µg

Lane 2:

Mouse kidney treated lysate treated with with PNGase F at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 46 kDa

Observed band size: 46 kDa,80 kDa

false

  • 775 Alexa Fluor® 750

    Alexa Fluor® 750 Anti-SIGIRR antibody [EPR22438-93]

  • Carrier free

    Anti-SIGIRR antibody [EPR22438-93] - BSA and Azide free

  • 578 PE

    PE Anti-SIGIRR antibody [EPR22438-93]

  • 660 APC

    APC Anti-SIGIRR antibody [EPR22438-93]

  • HRP

    HRP Anti-SIGIRR antibody [EPR22438-93]

  • 519 Alexa Fluor® 488

    Alexa Fluor® 488 Anti-SIGIRR antibody [EPR22438-93]

  • 603 Alexa Fluor® 568

    Alexa Fluor® 568 Anti-SIGIRR antibody [EPR22438-93]

  • 565 Alexa Fluor® 555

    Alexa Fluor® 555 Anti-SIGIRR antibody [EPR22438-93]

  • 665 Alexa Fluor® 647

    Alexa Fluor® 647 Anti-SIGIRR antibody [EPR22438-93]

  • 617 Alexa Fluor® 594

    Alexa Fluor® 594 Anti-SIGIRR antibody [EPR22438-93]

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR22438-93

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

IHC-P, IP, WB, Flow Cyt (Intra)

applications

Immunogen

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

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "FlowCytIntra" : {"fullname" : "Flow Cytometry (Intracellular)", "shortname":"Flow Cyt (Intra)"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "guaranteed", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/1000", "IHCP-species-notes": "<p></p>" }, "Mouse": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/600", "FlowCytIntra-species-notes": "<p></p>", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/1000", "IHCP-species-notes": "<p></p>" }, "Rat": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "guaranteed", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/1000", "IHCP-species-notes": "<p></p>" } } }

Product details

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Preservative: 0.01% Sodium azide Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% 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.

SIGIRR also known as Single Immunoglobulin IL-1 Related Receptor or TIR8 is a transmembrane protein approximately 410 amino acids in length translating to a mass of about 45 kDa. It is expressed in various tissues with higher levels seen in the kidney liver lung and immune cells. SIGIRR is part of the Toll-like receptor (TLR) and interleukin-1 receptor (IL-1R) family acting as a negative regulator by interfering with signaling pathways usually triggered by these receptors.
Biological function summary

SIGIRR modulates immune responses by dampening inflammation and maintaining homeostasis in immune-related pathways. SIGIRR functions as a decoy receptor binding ligands without initiating a signaling cascade which effectively reduces the immune response. It does not work alone; it is part of larger receptor complexes within the TLR and IL-1R family where it can inhibit the signaling of other family members like TLR4 and IL-1R1 thereby controlling their activity and preventing excessive inflammation.

Pathways

SIGIRR participates in both the Toll-like receptor and interleukin-1 receptor pathways. It interacts with adaptor proteins such as MyD88 to modulate the downstream signaling cascade that involves NF-kB activation a central transcription factor in immune response. By doing so it keeps the inflammation response in check connecting to related proteins within these pathways that include IL-1R1 and TLR4 ultimately regulating key pro-inflammatory processes.

Multiple studies link SIGIRR to conditions characterized by chronic inflammation such as inflammatory bowel disease (IBD) and rheumatoid arthritis (RA). Animals with SIGIRR deficiency tend to show increased susceptibility to these diseases implicating its role in disease modulation. Additionally SIGIRR's interaction with IL-1R1 highlights its potential involvement in autoimmune diseases where dysregulated immune regulation is a common theme. Understanding its function in these contexts can provide insights into therapeutic approaches for inflammatory and autoimmune conditions.

Product protocols

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

Target data

Acts as a negative regulator of the Toll-like and IL-1R receptor signaling pathways. Attenuates the recruitment of receptor-proximal signaling components to the TLR4 receptor, probably through an TIR-TIR domain interaction with TLR4. Through its extracellular domain interferes with the heterodimerization of Il1R1 and IL1RAP.
See full target information SIGIRR

Publications (5)

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

Journal of nanobiotechnology 23:612 PubMed41023976

2025

Lactobacillus johnsonii-derived extracellular vesicles restore mucosal immunity via taurine-linked Th17/Treg and IgA/IgG regulation in colitis.

Applications

Unspecified application

Species

Unspecified reactive species

Hailan Zhao,Ningning Yue,Zhiliang Mai,Yuan Zhang,Chengmei Tian,Chen Kong,Longbin Huang,Ruiyue Shi,Yujie Liang,Jun Yao,Yuqiang Nie,Defeng Li,Biao Nie,Lisheng Wang

Translational oncology 14:101116 PubMed33975180

2021

Obatoclax, the pan-Bcl-2 inhibitor sensitizes hepatocellular carcinoma cells to promote the anti-tumor efficacy in combination with immune checkpoint blockade.

Applications

Unspecified application

Species

Unspecified reactive species

Jingye Li,Jinrong Xu,Zhibing Li

Journal of cell communication and signaling 15:393-403 PubMed33945104

2021

A negative feedback loop involving NF-κB/TIR8 regulates IL-1β-induced epithelial- myofibroblast transdifferentiation in human tubular cells.

Applications

Unspecified application

Species

Unspecified reactive species

Keguo Jiang,Yuying Zhang,Fan He,Mingming Zhang,Tianyu Li,Zhenzhen Tu,Deping Xu,Min Zhang,Linzi Han,Liyu Guo,Haisheng Zhou,Deguang Wang

The Journal of nutritional biochemistry 82:108400 PubMed32438122

2020

Resveratrol prevents liver damage in MCD-induced steatohepatitis mice by promoting SIGIRR gene transcription.

Applications

Unspecified application

Species

Unspecified reactive species

YuanYuan Che,Xu Shi,XiaoDan Zhong,YuTong Zhang,RuJia Si,YaNan Li,Ying Shi

Journal of leukocyte biology 107:783-796 PubMed32125036

2020

The indirect antiangiogenic effect of IL-37 in the tumor microenvironment.

Applications

Unspecified application

Species

Unspecified reactive species

Yu Mei,Ying Zhu,Huey Yee Teo,Yonghao Liu,Yuan Song,Hwee Ying Lim,Zuhairah Binte Hanafi,Veronique Angeli,Haiyan Liu
View all publications

Product promise

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