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Catalog # HM1080-1ML

SIGN-R1, Mouse, mAb ER-TR9


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The monoclonal antibody ER-TR9 recognizes murine SIGN-related 1 (SIGN-R1). Mouse SIGN-R1,- a homolog of human DC-SIGN, is a 37 kDa type II transmembrane protein containing a single, C-terminal C-type lectin domain. SIGN-R1 is a specific marker for the identification of macrophage subpopulations present in the marginal zone of spleen (the so-called marginal zone macrophages (MZM)), in the lymph node medulla, and in the peritoneal cavity of some mouse strains. ER-TR9 does not react with macrophages in other regions of the spleen, such as CD169+ marginal metallophils and F4/80+ red pulp macrophages. In the spleen, the MZM function in trapping and clearance of blood-borne microbial antigens. SIGN-R1 mediates the uptake of encapsulated microbes , particularly through the recognition of microbial polysaccharides. Uptake of FITC-labeled dextran by macrophages can be blocked both in vivo and in vitro by the monoclonal antibody ER-TR9. Therefore, the monoclonal antibody ER-TR9 can be used to study the uptake of polysaccharides by macrophages.

Flow cytometry, Frozen sections, Functional studies

Application Notes
FC: Antibody ER-TR9 stains the extracellular domain of SIGN-R1. Peritoneal cells were pre-incubated with anti-CD16/32 to block Fc gamma before staining. As a negative control an isotype-matched antibody was used- (Ref.6) IHC-F:- Tissue sections were fixed in acetone and stained with antibody ER-TR9 using a two-step immunoperoxidase method (Ref.1). FS: Antibody ER-TR9- blocked the recognition of- zymosan and C. albicans by peritoneal macrophages. An isotype-matched antibody was used as a negative control. The polysaccharide mannan was used as a positive control. (Ref.4).

For immunohistology and flow cytometry dilutions to be used depend on detection system applied. It is recommended that users test the reagent and determine their own optimal dilutions. The typical starting working dilution is 1:50. For blocking studies in vitro, dilutions have to be made according to the amounts of SIGN-R1 to be inactivated.

Positive Control
Peritoneal macrophages of (Ref.4)

Product type
Monoclonal antibodies
200 µg
1 ml (200µg/ml) sterile culture medium with 0.02% sodium azide with a low endotoxin level.
Mouse thymic stromal cells
Rat IgM
CD209b, specific intracellular adhesion molecule-3 grabbing nonintegrin homolog-related 1
Storage and stability
Product should be stored at 4 °C. Under recommended storage conditions, product is stable for one year.
For research use only. Not for use in or on humans or animals or for diagnostics. It is the responsibility of the user to comply with all local/state and Federal rules in the use of this product. Hycult Biotech is not responsible for any patent infringements that might result with the use of or derivation of this product.
Infectious diseases
Protocol CoA-TDS Safety Data Sheets

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