CD46 Recombinant Monoclonal Antibody

Code: CSB-RA004939MA1HU

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Size:

50μl100μl

US$210

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Species Reactivity: Human

Application: ELISA, FC

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Target Background

Product Details

Uniprot NO.

P15529

Target Names

CD46

Alternative Names

Membrane cofactor protein (TLX) (Trophoblast leukocyte common antigen) (CD antigen CD46), CD46, MCP MIC10

Species Reactivity

Human

Immunogen

Recombinant Human CD46 protein

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

hIgG1

Clone No.

4E8

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, PH 7.4

Form

Liquid
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.

Scope Application

ELISA Protocol Flow Cytometry (FC) Protocol

Recommended Dilution

Application	Recommended Dilution
FC	1:50-1:200

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

Datasheet & COA

Antibody FAQs

Images

Overlay Peak curve showing HepG2 cells surface stained with CSB-RA004939MA1HU (red line) at 1:100. Then 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1ug/1*10⁶cells) for 45min at 4℃. The secondary antibody used was Fluorescein (FITC) AffiniPure Goat Anti-Human IgG, Fcγ fragment specific at 1:200 dilution for 35min at 4℃.Control antibody (green line) was human IgG1 (1ug/1*10⁶cells) used under the same conditions. Acquisition of >10,000 events was performed.

Description

CD46, also known as membrane cofactor protein, serves as a critical regulator of complement activation by acting as a cofactor for the serum protease factor I, which cleaves C3b and C4b deposited on host cell surfaces. This protective mechanism prevents autologous complement-mediated damage and has made CD46 a significant focus in immunology, infectious disease research, and cancer biology. Notably, CD46 also functions as a receptor for several pathogens, including measles virus and certain strains of adenovirus, while its expression patterns on tumor cells have drawn attention in oncology research.

This recombinant monoclonal antibody, clone 4E8, offers researchers the reproducibility and consistency that comes with sequence-defined production. Unlike traditional hybridoma-derived antibodies, recombinant technology ensures that every lot performs identically, eliminating the variability that can compromise longitudinal studies or multi-site collaborations. The human IgG1 isotype format provides predictable binding characteristics for downstream applications.

Validated for ELISA and flow cytometry, this antibody demonstrates clear utility for cell surface detection of CD46. Flow cytometry validation using HepG2 cells confirms robust detection of surface-expressed CD46, with recommended dilutions ranging from 1:50 to 1:200 providing flexibility to optimize signal-to-noise ratios across different experimental conditions. The validation data shows distinct separation between CD46-positive populations and isotype control, indicating specific target recognition on human hepatocellular carcinoma cells.

Supplied in a glycerol-based PBS buffer at pH 7.4 with Proclin 300 preservative, this affinity-purified antibody is well-suited for researchers investigating complement regulation, viral entry mechanisms, or CD46 expression in cancer models.

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Target Background

Function(From Uniprot)

Acts as a cofactor for complement factor I, a serine protease which protects autologous cells against complement-mediated injury by cleaving C3b and C4b deposited on host tissue. May be involved in the fusion of the spermatozoa with the oocyte during fertilization. Also acts as a costimulatory factor for T-cells which induces the differentiation of CD4+ into T-regulatory 1 cells. T-regulatory 1 cells suppress immune responses by secreting interleukin-10, and therefore are thought to prevent autoimmunity.; (Microbial infection) A number of viral and bacterial pathogens seem to bind MCP in order to exploit its immune regulation property and directly induce an immunosuppressive phenotype in T-cells.; (Microbial infection) Acts as a receptor for Adenovirus subgroup B2 and Ad3.; (Microbial infection) Acts as a receptor for cultured Measles virus.; (Microbial infection) Acts as a receptor for Herpesvirus 6/HHV-6.; (Microbial infection) May act as a receptor for pathogenic bacteria Neisseria and Streptococcus pyogenes.

Gene References into Functions

Only type-I interferon restricts viral replication of attenuated Measles virus (MV) Schwarz strain in mice, independently of the presence of hCD46 receptor. PMID:30199752
CD46 levels were positive in 3.3% (n = 3) and negative in 96.7% (n = 90). Conclusion This study does not support the theory of measles virus as the cause of otosclerosis. PMID:28971731
Findings demonstrate that CD46 is a key inhibitor of complement activation whose downregulation may be involved in the pathogenesis of bullous pemphigoid. PMID:28273946
these data suggest a possible mechanism underlying the regulatory function of CD46 on T cells. PMID:29066539
study demonstratede that MMP-9-mediated shedding of CD46 is an integral part of autocrine Th1 regulation and that this pathway is dysregulated in T cells from patients with systemic lupus erythematosus PMID:28444759
the cell surface expression level of CD46 was markedly higher in patient myeloma cells with 1q gain than in those with normal 1q copy number. PMID:27841764
Our findings reveal a novel role of CD46 in accelerating inflammatory responses upon meningococcal infection or LPS stimulation by regulating the functional polarization and survival of macrophages. PMID:27794168
study reveals common CD46 and IFI44L SNPs associated with measles-specific humoral immunity, and highlights the importance of alternative splicing/virus cellular receptor isoform usage as a mechanism explaining inter-individual variation in immune response after live measles vaccine PMID:28289848
study showed no genotype differences in CD46 IVS1-1724 C>G Single nucleotide polymorphis (SNP) between Recurrent Spontaneous Abortion and fertile women PMID:27921411
Isoforms of CD46 impact on HHV-6B infection and thereby in part explain the distinct tropism of HHV-6AGS and HHV-6BPL1. PMID:28056415
This study suggests that the promoter polymorphism (rs2796267, -496 A/G) CD46 gene may be related to susceptibility of acute renal allograft rejection in Korean kidney transplantation recipients. PMID:27234742
provides insight into CD46 alternative splicing regulation with implications for its function in the immune system and for genetic disease PMID:27226545
CD46 controls both Th1 activation and regulation via a miR-150-dependent mechanism. PMID:26746193
Data show that CD28 antigen costimulation modulates CD46 antigen surface expression on activated T cells. PMID:25787182
This review summarizes our current knowledge of disease-associated mutations in this complement inhibitor(CD46). PMID:26054645
It was not discover any association between A304V or other CD46 SNPs and preeclampsia. PMID:25710174
gene deficiency results in defective Th1 cell induction due to failure in metabolic reprogramming PMID:26084023
Each mutant C3b bound MCP at reduced affinity, providing a molecular basis for its reduced cofactor activity in atypical hemolytic uremic syndrome. PMID:25879158
The mutations in the regulators CFH, CFI and MCP involve loss-of-function, whereas those for C3 involve gain-of-function. PMID:25188723
Results suggest a possible role for multidrug resistance genes ABCA10 and ABCA6 in follicular lymphoma survival and add to the evidence that genetic variation in CD46 and IL8 may have prognostic implications follicular lymphoma. PMID:25294155
Expression of membrane complement regulators, CD46, CD55 and CD59, in mesothelial cells of patients on peritoneal dialysis therapy. PMID:25725314
Functional characterization of two novel non-synonymous alterations in CD46 and a Q950H change in factor H found in atypical hemolytic uremic syndrome patients. PMID:25733390
Transgenic hCD46/HLA-E expression reduced humoral xenoresponses since all were downregulated during ex vivo xenoperfusion of hCD46/HLA-E double transgenic pig forelimbs with human blood. PMID:24635052
The expression levels of CD46, CD55, and CD59 were significantly higher in colon cancer tissues compared with the normal adjacent colon tissues. PMID:24978917
The present study suggests that CD46 plays an important role in hepatocellular carcinoma carcinogenesis by regulating let-7b and miR-17. PMID:24297460
Data show that calcitriol affects the CD46 pathway, and that it promotes anti-inflammatory responses mediated by CD46. PMID:23144765
We found that CD46 and CD59 were decreased in retinal pigment epithelium cells in part, by their release in exosomes and apoptotic particles. PMID:24664706
C3aR and CD46 activation via intrinsic generation of their respective ligands is an integral part of human Th1 (but not Th2) immunity. PMID:24321396
patients with MCP mutations only have a good long-term prognosis with 15% to 20% disease recurrence after KTx PMID:24247905
Case Report: patient with atypical haemolytic uremic syndrome with combined membrane cofactor protein CD46 and complement factor I mutations undergoing successful kidney transplantation. PMID:23519521
Mutations in membrane cofactor protein is associated with end-stage renal disease in a patient with hemolytic uremic syndrome caused by infections by Escherichia coli strains producing Shiga-like toxins. PMID:23731345
Data show that increased CD35, CD46, CD55 and CD59 on neutrophils and monocytes present potent markers of bacterial infection and viral infection. PMID:23376460
Thus, while nectin-4 and CD46 interact functionally with the measles virus H protein beta4-beta5 hydrophobic groove, SLAM merely covers it. PMID:23760251
HCV incorporates selectively CD59, but not CD46 or CD55, in its envelope to gain resistance to CML in serum of infected individuals PMID:23049856
Hepatitis B virus X protein protects hepatoma and hepatic cells from complement-dependent cytotoxicity by up-regulation of CD46. PMID:23391762
The alternative pathway of complement may play a role in the pathogenesis of HELLP syndrome. PMID:22594569
The aim of this study was to determine the transcript and protein levels of complement decay-accelerating factor (DAF) and membrane cofactor protein (MCP) in the placentas of women with acquired and inherited thrombophilia. PMID:23042280
we found that CD46 regulated the expression of Notch receptors and ligands during T cell activation and that disturbance of the CD46-Notch crosstalk impeded induction of IFN-alpha and switching to IL-10. PMID:23086448
Data show that mutations in CD46 and CFH did not predispose to systemic lupus erythematosus (SLE) or nephritis but was associated with earlier onset of nephritis. PMID:22171659
mumps virus (MuV) and vesicular stomatitis virus (VSV) assemble to include CD46 and CD55, two host cell regulators which inhibit propagation of complement pathways through distinct mechanisms. PMID:22761385
Prostaglandin (PG)E2 has a novel role in CD46 functions, which might at least partly explain the diverse roles of PGE2 in T cell functions. PMID:22544928
Three CD46 variants (rs7144, rs11118580, and rs2724384) were significantly associated with measles virus-specific IgG levels (P = 0.008, P = 0.026, and P = 0.018, respectively). PMID:22357652
in systemic lupus erythematosus, the expression of leukocyte MCP at the mRNA level is closely related to disease activity PMID:22247341
Data suggest that HBXIP upregulates CD46, CD55 and CD59 through p-ERK1/2/NF-kappaB signaling to protect breast cancer from complement-dependent cytotoxicity. PMID:22293503
The strongest associations replicated in both cohorts were found for four SNPs within CD46 (p-value<10(-3)) and five SNPs within CFH (p-value<5x10(-3)). PMID:22153652
Subjects previously immunized with measles-mumps-rubella vaccine were genotyped for 66 candidate single nucleotide polymorphisms in the CD46, SLAM and CD209 genes. PMID:22086389
Mutations in the MCP gene seems to be a common etiology of atypical hemolytic uremic syndrome in Czech patients PMID:21706448
protein expression is an unfavorable prognostic factor in breast cancer cases PMID:21617523
Data sshow that variants in SFTPD, CD46 and IL1R1 are associated with IPD in both EA and AA. PMID:21858107
the A304V mutation in the MCP gene is not strongly associated with RM or FL. PMID:21840606

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Subcellular Location

Cytoplasmic vesicle, secretory vesicle, acrosome inner membrane; Single-pass type I membrane protein. Note=Inner acrosomal membrane of spermatozoa. Internalized upon binding of Measles virus, Herpesvirus 6 or Neisseria gonorrhoeae, which results in an increased susceptibility of infected cells to complement-mediated injury. In cancer cells or cells infected by Neisseria, shedding leads to a soluble peptide.

Tissue Specificity

Expressed by all cells except erythrocytes.

Database Links

HGNC: 6953

UNIGENE: Hs.510402

KEGG: hsa:4179

STRING: 9606.ENSP00000313875

OMIM: 120920

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