TLR8 Antibody (44C143) - BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-24917

Clone 44C143 was used by HLDA to establish CD designation.
Novus Biologicals, part of Bio-Techne

Key Product Details

Validated by

Orthogonal Validation, Biological Validation

Species Reactivity

Validated:

Human, Mouse, Rabbit

Cited:

Human, Mouse

Applications

Validated:

CyTOF-ready, Dot Blot, Flow (Cell Surface), Flow (Intracellular), Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Paraffin, Simple Western, Western Blot

Cited:

Cytometric Bead Assay Standard, Flow - IC, Flow (Cell Surface), Flow Cytometry, Flow Cytometry Control, IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Paraffin, Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 kappa Clone # 44C143

Format

BSA Free

Concentration

1.0 mg/ml

View all TLR8 Antibodies »

Product Specifications

Immunogen

This antibody was developed against a KLH-conjugated synthetic peptide of human TLR8, within amino acids 750-850.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1 kappa

Scientific Data Images for TLR8 Antibody (44C143) - BSA Free

Flow Cytometry: TLR8 Antibody (44C143) - BSA Free [NBP2-24917]

Flow Cytometry: TLR8 Antibody (44C143) - BSA Free [NBP2-24917]

Flow Cytometry: TLR8 Antibody (44C143) [NBP2-24917] - Intracellular expression of TLR8 in monocyte-derived macrophages (MDMs). MDMs which were incubated with PE-conjugated anti-TLR8 or isotype antibody control. Intracellular expression was determined by flow cytometry. Representative profiles were similar in four independent experiments (n=4 subjects). Image collected and cropped by CiteAb from the following publication (//doi.org/10.1371/journal.pone.0104039) licensed under a CC-BY license.
Flow Cytometry: TLR8 Antibody (44C143) - BSA Free [NBP2-24917]

Flow Cytometry: TLR8 Antibody (44C143) - BSA Free [NBP2-24917]

Flow Cytometry: TLR8 Antibody (44C143) [NBP2-24917] - Expression of TLR8 in Fravel, L363, OPM1, RPMI8226, XG1, and NCI-H929 as determined by flow cytometry. HCMLs were stained using an intracellular staining protocol with TLR8 antibodies followed by relevant secondary fluorescent-conjugated antibodies. Filled histograms (purple) represent the isotype controls and the open histograms (red) indicate TLR8. Data are representative for analysis of >=2 independent experiments. Image collected and cropped by CiteAb from the following publication (//doi.org/10.1371/journal.pone.0060671) licensed under a CC-BY license.
Western Blot: TLR8 Antibody (44C143)BSA Free [NBP2-24917]

Western Blot: TLR8 Antibody (44C143)BSA Free [NBP2-24917]

Western Blot: TLR8 Antibody (44C143) [NBP2-24917] - All the cell lines expressed mRNA for TLR8 (Figure 1) and displayed a strong expression of TLR8 protein (Figure 2). Lysates of human intestinal tissue and mouse splenocytes were used as positive controls. Beta-actin was served as loading control and was used to normalize expression levels between cells. Data are representative for analysis of >=2 independent experiments. Image collected and cropped by CiteAb from the following publication (//doi.org/10.1371/journal.pone.0060671) licensed under a CC-BY license.
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Applications for TLR8 Antibody (44C143) - BSA Free

Application
Recommended Usage

Dot Blot

reported in scientific literature (PMID 27248820)

Flow (Cell Surface)

reported in multiple pieces of scientific literature

Flow (Intracellular)

reported in reported in multiple pieces of scientific literature (PMID 24836676)

Flow Cytometry

0.5-1 ug/10^6 cells

Immunohistochemistry-Paraffin

5 ug/ml

Simple Western

20 ug/ml

Western Blot

1-3 ug/ml
Application Notes
Staining of formalin-fixed tissues is enhanced by boiling tissue sections in 10 mM sodium citrate buffer, pH 6.0 for 10-20 min followed by cooling at RT for 20 min. This antibody is CyTOF ready.

Formulation, Preparation, and Storage

Purification

Protein G purified

Formulation

PBS pH 7.4

Format

BSA Free

Preservative

0.05% Sodium Azide

Concentration

1.0 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: TLR8

Toll-like receptor 8 (TLR8) is a member of the TLR family of receptors that play a role in innate immune system activation and the recognition of pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) (1,2). TLRs are type I membrane receptors that can be expressed on either the cell surface or internally, on endosomes (1,2). TLR8 is an endosomal receptor and is activated by pathogenic single stranded (ss) RNA (1-3). TLR8 is located on the X chromosome and is expressed mostly in monocytes/macrophages, neutrophils, and myeloid dendritic cells (1-3). Structurally, TLR8 consists of an extracellular domain, a cysteine-rich region, and transmembrane domain, and a Toll/Interleukin-1 receptor homology (TIR) domain (3,4). The extracellular domain contains a N-terminal leucine rich repeat (LRRNT) and a C-terminal LRR (LRRCT) which have 26 LRRs between them, each approximately 20-30 amino acids (aa), and a Z-loop between LRR14 and LRR15 (3). The primary isoform of the human TLR8 is synthesized as a protein 1041 aa in length with a theoretical molecular weight of ~120 kDa (4).

TLR8 is highly similar to TLR7 and both pathways are mediated by the adapter protein MyD88 to signal through IFN regulatory factor 7 (IRF7) and nuclear factor (NF)-kappaB (1-3,5). However, TLR7 recognizes guanosine and GU-rich ssRNA, while TLR8 recognizes uridine and AU-rich sequences (2,5). TLR7/TLR8 agonists, including derivatives of the immunostimulatory imiquimod, have been shown to be a promising cancer therapy capable of providing anticancer signals to antigen presenting cells (APCs), with many agonists being tested in both pre-clinical and clinical trials (6). Similarly, studies suggest that agonists for TLR8, in combination with other individual TLR agonists and antagonists, may also be useful for treating inflammatory allergic diseases, such as allergic rhinitis (7).

References

1. Sakaniwa, K., & Shimizu, T. (2020). Targeting the innate immune receptor TLR8 using small-molecule agents. Acta crystallographica. Section D, Structural biology, 76(Pt 7). https://doi.org/10.1107/S2059798320006518

2. Cervantes, J. L., Weinerman, B., Basole, C., & Salazar, J. C. (2012). TLR8: the forgotten relative revindicated. Cellular & molecular immunology. https://doi.org/10.1038/cmi.2012.38

3. Ohto, U., Tanji, H., & Shimizu, T. (2014). Structure and function of toll-like receptor 8. Microbes and infection. https://doi.org/10.1016/j.micinf.2014.01.007

4. Uniprot (Q9NR97)

5. Jannuzzi, G. P., de Almeida, J., Paulo, L., de Almeida, S. R., & Ferreira, K. S. (2020). Intracellular PRRs Activation in Targeting the Immune Response Against Fungal Infections. Frontiers in cellular and infection microbiology. https://doi.org/10.3389/fcimb.2020.591970

6. Frega, G., Wu, Q., Le Naour, J., Vacchelli, E., Galluzzi, L., Kroemer, G., & Kepp, O. (2020). Trial Watch: experimental TLR7/TLR8 agonists for oncological indications. Oncoimmunology. https://doi.org/10.1080/2162402X.2020.1796002

7. Golshiri-Isfahani, A., Amizadeh, M., & Arababadi, M. K. (2018). The roles of toll like receptor 3, 7 and 8 in allergic rhinitis pathogenesis. Allergologia et immunopathologia. https://doi.org/10.1016/j.aller.2017.09.026

Long Name

Toll-like Receptor 8

Alternate Names

CD288

Gene Symbol

TLR8

Additional TLR8 Products

Product Documents for TLR8 Antibody (44C143) - BSA Free

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Certificate of Analysis

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Product Specific Notices for TLR8 Antibody (44C143) - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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