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Home > Antibodies > Anti-Human Antibodies (In Vivo) > Anti-human CD32 Monoclonal Antibodies

Anti-human CD32 Monoclonal Antibodies

cluster of differentiation 32, Fc gamma RIIA and Fc gamma RIIB

Catalog No. Product Name Size List Price (US$) Quantity
PA007392.m2b In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Mouse IgG2b Kappa (Clone: IV.3) 1 mg 150.00
PA007392.m2b In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Mouse IgG2b Kappa (Clone: IV.3) 5 mg 350.00
PA007392.m2b In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Mouse IgG2b Kappa (Clone: IV.3) 25 mg 900.00
PA007392.h1Fs In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Human IgG1 Fc Silent Kappa (Clone: IV.3) 1 mg 150.00
PA007392.h1Fs In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Human IgG1 Fc Silent Kappa (Clone: IV.3) 5 mg 350.00
PA007392.h1Fs In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Human IgG1 Fc Silent Kappa (Clone: IV.3) 25 mg 900.00
Description

Background of Recombinant Anti-Human CD32 Monoclonal Antibody (Clone: IV.3)

The recombinant IV.3 antibody binds to human CD32 (FcγRII or FCGR2), a cluster of differentiation molecule found on the surface of a variety of immune cells. CD32 is a surface receptor glycoprotein belonging to the Ig gene superfamily, has a low-affinity for the Fc region of IgG antibodies in monomeric form, but high affinity for IgG immune complexes. CD32 has two major functions: cellular response regulation, and the uptake of immune complexes. CD32 consists of Fc receptors FcγRIIa (CD32a), FcγRIIb (CD32b), and FcγRIIc (CD32c).

PA007392.m2b: In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Mouse IgG2b Kappa (Clone: IV.3)

Recombinant mouse IgG2b Monoclonal Antibody. 
Clone: IV.3.
Isotype: Mouse IgG2b kappa.
Source: The anti-human CD32 monoclonal antibody (clone: IV.3) was produced in mammalian cells.
Specificity/Sensitivity: The in vivo grade recombinant mouse monoclonal antibody (clone: IV.3) specifically binds to human CD32.
Applications: ELISA, flow cytometry, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by the human CD32 protein. Human Fc receptor blocking solution, human Fc receptor blocking reagent, and human Fc receptor blocking antibody.
Form of Antibody: 0.2 uM filtered solution, pH 7.4, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions.

PA007392.h1Fs: In vivo Grade Recombinant Anti-human CD32 Monoclonal Antibody, Human IgG1 Fc Silent Kappa (Clone: IV.3)

Recombinant human IgG1 monoclonal antibody with Fc silent mutation.
Clone: IV.3.
Isotype: Human IgG1 kappa.
Source: The anti-human CD32 monoclonal antibody (clone: IV.3) was produced in mammalian cells.
Specificity/Sensitivity: The in vivo grade recombinant human monoclonal antibody (clone: IV.3) specifically binds to human CD32.
Applications: ELISA, flow cytometry, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by the human CD32 protein. Human Fc receptor blocking solution, human Fc receptor blocking reagent, and human Fc receptor blocking antibody.
Form of Antibody: 0.2 uM filtered solution, pH 7.4, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions.

Shipping: The antibody is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month from date of receipt, 2 to 8°C as supplied.

The most popular human Fc blocking reagents include:
Anti-human CD16 (clone 3G8), and CD32 (Clone IV.3): for flow cytometry, immunohistochemistry (IHC), and immunoprecipitation (IP). It is highly specific for FcγRII (CD32) and FcγRIII (CD16), and reduces background staining; it may not block all Fc receptors. Clones 10.1, and 22 or H22 are the most widely used anti-human FcγRI (CD64) clone for Fc blocking in flow cytometry and functional assays. It prevents non-specific Fc receptor binding on monocytes, macrophages, and dendritic cells, improving antibody specificity.
Purified human IgGs or mixes of human isotype controls: for general Fc blocking in IHC and immunofluorescence (IF). It is cheap and easy to use but it is less specific, and may even introduce unwanted immunoglobulins. Syd Labs supply various human IgG isotype controls.
Normal mouse serum, purified mouse IgG or isotype controls: for flow cytometry. It can serve as a control to block Fc receptors but it is non-specific for Fc receptors. It is cheap and easy to use but it is less specific, and may even introduce unwanted immunoglobulins. Our recombinant mouse IgG antibody mixes are affordable; the ratio of various IgGs is optimized and adjustable without any unwanted immunoglobulins.
Bovine Serum Albumin (BSA) or FBS: for general blocking in Western Blot (WB) and IHC. They are readily available to reduce non-specific binding but less effective at Fc receptor blocking.
Commercial Fc blocking solutions: for flow cytometry, IHC, and functional assays. They are normally pre-optimized and highly effective but more expensive than DIY solutions. 

Best choice of human Fc blocking reagents based on your application are:
For flow cytometry: anti-human CD16 (Clone 3G8), CD32 (Clone IV.3), and CD64 (Clone 10.1, and 22 or H22).
For Immunohistochemistry (IHC) and Immunofluorescence (IF): Normal mouse serum, purified mouse or human IgGs or isotype controls or commercial Fc blocking kits. Our recombinant mouse IgG antibody mixes and recombinant human IgG isotype controls are affordable; the ratio of various IgGs is optimized and adjustable without any unwanted immunoglobulins.
For Western Blot and ELISA: BSA or FBS.
For functional assays (e.g., blocking Fc-mediated effects): Commercial Fc blocking reagents.

References of Recombinant Anti-Human CD32 Monoclonal Antibody (Clone: IV.3)

Lu, et al. Cell Rep. 2024 Apr 23;43(4):113994. PMID: 38555986; PMCID: PMC11031382
Trogocytosis is an intercellular communication process where immune cells extract surface molecules from interacting cells, but its exploitation by viral pathogens remains incompletely understood. ...We demonstrate that HIV-1 exploits autoantibody-enhanced, CD32-driven trogocytosis to facilitate the infection of resting CD4+ T cells, a major viral reservoir. ...Blocking the CD32 receptor with the anti-CD32 monoclonal antibody clone IV.3 significantly reduced this receptor transfer and subsequent viral entry, highlighting CD32's role in HIV pathogenesis.
(Tags: anti-human CD32 IV.3 mAb; CD32 clone IV.3 trogocytosis)
Holgado, et al. Front Immunol. 2018 Nov 27;9:2814. PMID: 30542352; PMCID: PMC6284025
The Fc gamma receptor IIa (CD32a) is classically known to be expressed on myeloid cells, but its potential functional role on T cell subsets remains poorly defined. ...This study reveals that CD32 is highly expressed on a distinct subset of activated CD4+ T cells and that its ligation provides potent costimulatory signals. ...Cross-linking CD32 using the specific monoclonal antibody clone IV.3 enhanced T cell proliferation, activation marker expression, and effector cytokine production.
(Tags: CD32 IV.3 antibody activation; anti-CD32 clone IV.3 in vitro)
Qiao, et al. Immunology. 2006 Nov;119(3):418-425. PMID: 16939665; PMCID: PMC1782155
The inhibitory receptor FcγRIIb (CD32) is well documented to downregulate B cell responses when co-cross-linked with the B cell antigen receptor (BCR). ...We investigated whether CD32 ligation could inhibit IgE synthesis independently of BCR co-ligation, providing an alternative pathway for allergic modulation. ...By utilizing the CD32-specific antibody clone IV.3, we demonstrated a profound suppression of IL-4-induced IgE production in human B cells without the need for BCR engagement.
(Tags: anti-human CD32 blocking antibody; CD32 clone IV.3 B cell assay)
Wang, et al. Sci Rep. 2019 Jun 28;9(1):9407. PMID: 31253816; PMCID: PMC6601543
Therapeutic antibodies targeting the IL-4 receptor alpha (IL-4Rα) are highly effective in treating type 2 allergic inflammatory diseases, but their optimal function may depend on Fc-gamma receptor interactions. ...We show that the suppressive activity of a novel anti-IL-4Rα therapeutic antibody is significantly enhanced in the presence of CD32-expressing immune cells. ...The essential role of CD32 engagement was confirmed by blocking the receptor with the anti-CD32 clone IV.3, which diminished the therapeutic efficacy of the antibody in vitro.
(Tags: CD32 IV.3 functional grade; anti-human CD32 Fc block)
Brodard, et al. J Thromb Haemost. 2021 May;19(5):1321-1330. PMID: 33544970; PMCID: PMC8014456
Severe COVID-19 is frequently complicated by coagulopathy and atypical thrombotic events that clinically mimic heparin-induced thrombocytopenia (HIT). ...We identified the presence of circulating immune complexes in critically ill COVID-19 patients that strongly activate platelets directly via the low-affinity IgG receptor FcγRIIa (CD32a). ...The addition of the CD32-blocking monoclonal antibody clone IV.3 completely abolished the platelet activation induced by patient sera, confirming an Fc-dependent mechanism of thrombosis.
(Tags: anti-CD32 IV.3 platelet activation; CD32 clone IV.3 flow cytometry)
For more technical references or data sheets regarding the Recombinant Anti-Human CD32 Monoclonal Antibody (Clone: IV.3) formats, please contact our scientific support team at message@sydlabs.com.

Syd Labs provides the following in vivo grade recombinant anti-human CD16, CD32, and CD64 monoclonal antibodies:
Recombinant Anti-human CD16 monoclonal antibody (Clone: 3G8)
Recombinant Anti-human CD32 monoclonal antibody (Clone: IV.3)
Recombinant Anti-human CD64 monoclonal antibody (Clone: H22)

Syd Labs provides the following in vivo grade recombinant anti-mouse CD16, CD32, and CD64 monoclonal antibodies:
Recombinant Anti-mouse CD16/CD32 monoclonal antibody (Clone: 2.4G2)

Syd Labs provides the following recombinant anti-human CD16, CD32, and CD64 monoclonal antibodies for flow cytometry:
Recombinant Anti-human CD16 monoclonal antibody (Clone: 3G8) for flow cytometry
Recombinant Anti-human CD32 monoclonal antibody (Clone: IV.3) for flow cytometry
Recombinant Anti-human CD64 monoclonal antibody (Clone: H22) for flow cytometry

If you need to learn more about Anti-human CD32 Monoclonal Antibodies, click: Anti-human CD32 Antibody(IV.3) | PA007392.m2b

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