Anti-TLR4 antibody [HTA125] (FITC) (ab8378)

Mouse monoclonal TLR4 antibody [HTA125] conjugated to FITC. Validated in Flow Cyt and tested in Guinea pig, Human. Cited in 3 publication(s).


  • Product name

    Anti-TLR4 antibody [HTA125] (FITC)
    See all TLR4 primary antibodies
  • Description

    Mouse monoclonal [HTA125] to TLR4 (FITC)
  • Host species

  • Conjugation

    FITC. Ex: 493nm, Em: 528nm
  • Specificity

    This antibody recognises the human Toll like receptor 4 (TLR4) cell surface antigen. TLR4 has been demonstrated to act as alpha receptor for LPS on human monocytes and macrophages. TLR4 signalling of LPS stimulation requires the presence of the MD-2 molecule. TLR4 is weakly expressed by resting cells, but is upregulated following stimulation with LPS.This antibody has been demonstrated to block activation of monocytes with LPS.
  • Tested applications

    Suitable for: Flow Cytmore details
  • Species reactivity

    Reacts with: Guinea pig, Human
  • Immunogen

    Ba/F3 cell line expressing TLR4



Our Abpromise guarantee covers the use of ab8378 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Flow Cyt Use at an assay dependent concentration.

Use 10 µl of this concentration to label 106 cells or 100µl whole blood.




ab91362 - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.



  • Function

    Cooperates with LY96 and CD14 to mediate the innate immune response to bacterial lipopolysaccharide (LPS). Acts via MYD88, TIRAP and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response. Also involved in LPS-independent inflammatory responses triggered by Ni(2+). These responses require non-conserved histidines and are, therefore, species-specific.
  • Tissue specificity

    Highly expressed in placenta, spleen and peripheral blood leukocytes. Detected in monocytes, macrophages, dendritic cells and several types of T-cells.
  • Involvement in disease

    Genetic variation in TLR4 is associated with age-related macular degeneration type 10 (ARMD10) [MIM:611488]. ARMD is a multifactorial eye disease and the most common cause of irreversible vision loss in the developed world. In most patients, the disease is manifest as ophthalmoscopically visible yellowish accumulations of protein and lipid that lie beneath the retinal pigment epithelium and within an elastin-containing structure known as Bruch membrane.
  • Sequence similarities

    Belongs to the Toll-like receptor family.
    Contains 18 LRR (leucine-rich) repeats.
    Contains 1 LRRCT domain.
    Contains 1 TIR domain.
  • Domain

    The TIR domain mediates interaction with NOX4.
  • Post-translational

    N-glycosylated. Glycosylation of Asn-526 and Asn-575 seems to be necessary for the expression of TLR4 on the cell surface and the LPS-response. Likewise, mutants lacking two or more of the other N-glycosylation sites were deficient in interaction with LPS.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • ARMD10 antibody
    • CD284 antibody
    • CD284 antigen antibody
    • Homolog of Drosophila toll antibody
    • hToll antibody
    • TLR 4 antibody
    • TLR4 antibody
    • TLR4_HUMAN antibody
    • TOLL antibody
    • Toll like receptor 4 antibody
    • Toll-like receptor 4 antibody
    see all


  • ab8378 staining TLR4 (FITC) in human peripheral blood monocytes by Flow Cytometry analysis.


This product has been referenced in:

  • Hou Y  et al. Up-regulation of DcR3 in microbial toxins-stimulated HUVECs involves NF-?B signalling. BMC Biochem 19:13 (2018). Read more (PubMed: 30587127) »
  • Velot E  et al. Activation of the adenosine-A3 receptor stimulates matrix metalloproteinase-9 secretion by macrophages. Cardiovasc Res : (2008). Read more (PubMed: 18653544) »
See all 3 Publications for this product

Customer reviews and Q&As


We do not know whether this antibody will cross react with mouse tissue. We do not have any trial samples for testing purposes, but would be interested to know whether this antibody cross reacts with mouse. If you decide to purchase this antibody, please let us know whether it cross reacts with mouse and we'll offer you a EUR 25.00 Amazon gift voucher as a reward! (Please see the reviews link on the datasheet for more details). This is the only FITC-labled TLR-4 antibody that we currently have in stock.

Read More

For licensing inquiries, please contact

Sign up