CD20 Antibody (OTI4B4)

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-45454

Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Validated:

Human, Mouse, Canine, Monkey

Cited:

Mouse, Rat, Canine, Goat

Applications

Validated:

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot

Cited:

Immunohistochemistry-Paraffin

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # OTI4B4

Concentration

1 mg/ml

View all CD20 Antibodies »

Product Specifications

Immunogen

Full length human recombinant protein of human MS4A1 (NP_068769) produced in HEK293T cell.

Reactivity Notes

Please note that this antibody is reactive to Mouse and derived from the same host, Mouse. Mouse-On-Mouse blocking reagent may be needed for IHC and ICC experiments to reduce high background signal. You can find these reagents under catalog numbers PK-2200-NB and MP-2400-NB. Please contact Technical Support if you have any questions.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Theoretical MW

32.9 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for CD20 Antibody (OTI4B4)

Western Blot: CD20 Antibody (OTI4B4) [NBP2-45454]

Western Blot: CD20 Antibody (OTI4B4) [NBP2-45454]

Western Blot: CD20 Antibody (OTI4B4) [NBP2-45454] - Expression of CD20 in 5 B cell lymphoma cell lines (Raji, Ly10, Daudi, CCL-155, and Ramos). Image submitted by a verified customer review.
Immunohistochemistry-Paraffin: CD20 Antibody (OTI4B4) [NBP2-45454]

Immunohistochemistry-Paraffin: CD20 Antibody (OTI4B4) [NBP2-45454]

Immunohistochemistry-Paraffin: MS4A1/CD20 Antibody (4B4) [NBP2-45454] - Analysis of Human tonsil tissue.
Western Blot: CD20 Antibody (OTI4B4) [NBP2-45454]

Western Blot: CD20 Antibody (OTI4B4) [NBP2-45454]

Western Blot: MS4A1/CD20 Antibody (4B4) [NBP2-45454] - Analysis of extracts (35ug) from 9 different cell lines (HepG2: human; HeLa: human; SVT2: mouse; A549: human; COS7: monkey; Jurkat: human; MDCK: canine; PC12: rat; MCF7: human).
View 1 more images

Applications for CD20 Antibody (OTI4B4)

Application
Recommended Usage

Immunohistochemistry

1:150

Immunohistochemistry-Paraffin

1:150

Western Blot

1:2000
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 2 reviews rated 4.5 using NBP2-45454 in the following applications:

Formulation, Preparation, and Storage

Purification

Immunogen affinity purified

Formulation

PBS (pH 7.3), 1.0% BSA and 50% Glycerol

Preservative

0.02% Sodium Azide

Concentration

1 mg/ml

Shipping

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

Stability & Storage

Store at -20C. Avoid freeze-thaw cycles.

Background: CD20

CD20 is a non-glycosylated phosphoprotein that is expressed on the surface of normal and malignant B cells and functions in mediating calcium transport and B cell differentiation (1,2). CD20 is encoded by the membrane-spanning 4-domain family A member 1 (MS4A1) gene and, in humans, is located on chromosome 11q12 (1). The CD20 protein is 297 amino acids (aa) in length with a theoretical molecular weight (MW) of 33 kDa (1,2). Structurally, the CD20 protein has four membrane-spanning domains, two extracellular loop domains, and intracellular N- and C-terminal domains (1,2). CD20 is expressed at specific stages of B cell maturation including pre-B cells, mature naive and activated B cells, and memory B cells, but is absent from plasmablasts and plasma cells (1,3,4). Expression of CD20 is often increased on malignant B cells associated with various B cell disorders such as chronic lymphocytic leukemia (CLL), multiple sclerosis (MS), and rheumatoid arthritis (2-4). Anti-CD20 monoclonal antibody (mAb)-based therapies have become an appealing target for treating these immune-related disorders and cancers (1-5). Rituximab, a chimeric mAb, was the first FDA approved CD20 monoclonal antibody for the treatment of non-Hodgkin's lymphoma that is now commonly used to treat MS (2,3). Since its initial approval in 1997, several other chimeric and humanized anti-CD20 mAbs have been developed including Ofatumumab, Ublituximab, and Obinutuzumab (1-5). B cell depletion via CD20 mAbs can occur under different mechanisms such as antibody-dependent cellular cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP), complement-dependent cytotoxicity (CDC), and direct induction of apoptosis (1-4). Many ongoing studies are focused on combination therapies with CD20 mAbs as an addition to chemotherapy, B cell receptor (BCR) signaling inhibitors, or BH3 mimetics (1,2,4). Additionally, the effects of bispecific antibodies and CD20 chimeric antigen receptor (CAR) T cell therapies are under investigation for the treatment of B cell malignancies (4,5).

References

1. Pavlasova G, Mraz M. The regulation and function of CD20: an "enigma" of B-cell biology and targeted therapy. Haematologica. 2020; 105(6):1494-1506. https://doi.org/10.3324/haematol.2019.243543

2. Payandeh Z, Bahrami AA, Hoseinpoor R, et al. The applications of anti-CD20 antibodies to treat various B cells disorders. Biomed Pharmacother. 2019; 109:2415-2426. https://doi.org/10.1016/j.biopha.2018.11.121

3. Margoni M, Preziosa P, Filippi M, Rocca MA. Anti-CD20 therapies for multiple sclerosis: current status and future perspectives. J Neurol. 2022; 269(3):1316-1334. https://doi.org/10.1007/s00415-021-10744-x

4. Klein C, Jamois C, Nielsen T. Anti-CD20 treatment for B-cell malignancies: current status and future directions. Expert Opin Biol Ther. 2021; 21(2):161-181. https://doi.org/10.1080/14712598.2020.1822318

5. Sharman JP. Targeting CD20: teaching an old dog new tricks. Hematology Am Soc Hematol Educ Program. 2019; 2019(1):273-278. https://doi.org/10.1182/hematology.2019000031

Long Name

Cluster of Differentiation 20

Alternate Names

B1, Bp35, CD20, LEU-16, Ly-44, MS4A1, S7

Gene Symbol

MS4A1

Additional CD20 Products

Product Documents for CD20 Antibody (OTI4B4)

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

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Product Specific Notices for CD20 Antibody (OTI4B4)

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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