Anti-Claudin 18.2 antibody [EPR19202]
- RabMAb
- Recombinant
- 20ul selling size
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(17 Publications)
Anti-Claudin 18.2 antibody [EPR19202] (ab222512) is a rabbit monoclonal antibody detecting Claudin 18.2 in IHC-P, IHC-Fr. Suitable for Human, Mouse, Rat.
- Clone EPR19202 is the most cited clone to Claudin 18.2
- Biophysical QC for unrivalled batch-batch consistency
View Alternative Names
UNQ778/PRO1572, CLDN18, Claudin-18
- IHC-P
Lab
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of formalin fixed paraffin (FFPE) embedded stomach labelling claudin 18.2 with ab222512 at a concentration of 2µg/ml. The immunostaining was performed on a Ventana DISCOVERY ULTRA (Roche Tissue Diagnostics) instrument with an OptiView DAB IHC Detection Kit. Heat mediated antigen retrieval was conducted for 64min with DISCOVERY cell conditioning solution (CC2) 100°C, pH 8.5. ab222512 was incubated at 37°C for 32 min. Sections were counterstained is with Hematoxylin II. Image inset shows absence of staining in secondary antibody only control
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded human lung tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Negative control : No staining on human lung is observed (PMID21571049). Counter stained with Hematoxylin.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded human stomach cancer tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Membranous staining on adjacent normal gastric epithelial cells but negative staining on stomach cancer cells (PMID : 16435283). It has been documented in the literature that Claudin 18.2 can be up-regulated or down-regulated in certain gastric cancers. (PMID : 19047087; PMID : 16435283). Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded human colon cancer tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Membranous staining on colon cancer cells is observed (PMID : 19047087). Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded human stomach tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Membranous staining on human gastric epithelial cells is observed (PMID : 21571049). Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-P
Lab
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of formalin fixed paraffin embedded human stomach labelling Claudin 18.2 with ab240400 at a concentration of 1µg/ml. The immunostaining was performed on a Ventana DISCOVERY ULTRA (Roche Tissue Diagnostics) instrument with a OptiView DAB IHC Detection Kit. Heat mediated antigen retrieval was performed with DISCOVERY cell conditioning solution (CC2) 100°C, pH8.5 for 64mins.
Anti-Claudin 18.2 antibody [EPR19202] ab240400 was incubated for 16mins at 37°C. Sections were counterstained with Hematoxylin II. Image inset shows absence of staining in secondary antibody only control.
Customers are encouraged to optimise antigen retrieval conditions, antibody concentration, incubation times and temperature for best results in their own IHC assay workflow (automated and manual).
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded human stomach cancer tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. We observed membranous staining on gastric cancer cells (PMID : 19047087). It has been documented in the literature that Claudin 18.2 can be up-regulated or down-regulated in certain gastric cancers. (PMID : 19047087; PMID : 16435283). Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-Fr
Supplier Data
Immunohistochemistry (Frozen sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of OCT-embedded mouse stomach tissue labeling Claudin 18.2 with ab222512 at 1/250 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Positive cell membrane staining on gastric mucosa epithelial cells (PMID : 21571049). Nuclear counter stained with DAPI.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded mouse stomach tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Membranous staining on mouse gastric epithelial cells is observed. Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of paraffin-embedded rat stomach tissue labeling Claudin 18.2 with ab222512 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Membranous staining on rat gastric epithelial cells is observed. Counter stained with Hematoxylin.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
- IHC-Fr
Supplier Data
Immunohistochemistry (Frozen sections) - Anti-Claudin 18.2 antibody [EPR19202] (AB222512)
Immunohistochemical analysis of OCT-embedded rat stomach tissue labeling Claudin 18.2 with ab222512 at 1/50 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) ready to use. Positive cell membrane staining on gastric mucosa epithelial cells (PMID : 21571049). Nuclear counter stained with DAPI.
Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) ready to use.
Related conjugates and formulations (7)
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Anti-Claudin 18.2 antibody [EPR19202] - BSA and Azide free
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565 Alexa Fluor® 555
Alexa Fluor® 555 Anti-Claudin 18.2 antibody [EPR19202]
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617 Alexa Fluor® 594
Alexa Fluor® 594 Anti-Claudin 18.2 antibody [EPR19202]
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519 Alexa Fluor® 488
Alexa Fluor® 488 Anti-Claudin 18.2 antibody [EPR19202]
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665 Alexa Fluor® 647
Alexa Fluor® 647 Anti-Claudin 18.2 antibody [EPR19202]
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603 Alexa Fluor® 568
Alexa Fluor® 568 Anti-Claudin18.2 antibody [EPR19202]
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775 Alexa Fluor® 750
Alexa Fluor® 750 Anti-Claudin18.2 antibody [EPR19202]
Reactivity data
Product details
Anti-Claudin 18.2 antibody [EPR19202] (ab222512) was developed by Abcam using patented rabbit monoclonal antibody technology and is validated for use in IHC-Fr and IHC-P
Abcam's high quality manufacturing and validation processes ensure Anti-Claudin 18.2 antibody [EPR19202] (ab222512) has high sensitivity and specificity alongside high lot-to-lot consistency and reproducibility.
Anti-Claudin 18.2 antibody [EPR19202] (ab222512) specifically detects Claudin 18.2 (UniProt ID: P56856; Molecular weight: 28kDa) and is sold in 100 µL and 1 mL selling sizes.
Conjugation-ready, carrier free format available for antibody clone EPR19202 - ab240400.
Antibody clone EPR19202 is also available pre-conjugated to a variety of labels for your convenience - Alexa Fluor® 488, Alexa Fluor® 647, Alexa Fluor® 594, Alexa Fluor® 568, Alexa Fluor® 555, Alexa Fluor® 750 (ab311014, ab311142, ab311779, ab313060, ab313260, ab321409).
Claudin 18.2 (CLDN18.2) is a highly selective protein found in the tight junctions of gastric epithelial cells. It becomes accessible on the surface of tumor cells during malignant transformation, making it a valuable target for cancer therapy. CLDN18.2 is predominantly expressed in gastric and gastroesophageal cancers but is also found in other solid tumors. Researchers are developing targeted therapies, including monoclonal antibodies, bispecific antibodies and CAR-T cells, to exploit CLDN18.2's unique expression pattern. These therapies show promise in improving treatment outcomes for patients with CLDN18.2-positive cancers.
Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
Properties and storage information
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Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
Claudin 18.2 functions within tight junction complexes creating a barrier and controlling the movement of ions and molecules between cells. It is vital for the integrity and function of epithelial cell barriers in the stomach. The protein interacts with other claudins and cytoplasmic proteins to form these tight junctions essential for maintaining tissue organization and permeability. Its unique expression pattern makes it a significant marker for gastric tissue and a potential target for therapeutics.
Pathways
Claudin 18.2 is involved in cellular pathways related to adhesion and barrier function. It plays a role in the tight junction pathway critical for epithelial barrier integrity. This pathway involves interactions with other claudin proteins and ZO-1 which is a cytoplasmic plaque protein that links claudins to the actin cytoskeleton reinforcing cellular structure. Another pathway where claudin 18.2 is important is the gastro-intestinal epithelium maintenance pathway which is fundamental for protecting gastric tissues.
Product protocols
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Target data
Publications (17)
Recent publications for all applications. Explore the full list and refine your search
Frontiers in oncology 15:1636367 PubMed40951359
2025
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World journal of oncology 16:254-268 PubMed40556965
2025
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International journal of general medicine 17:1695-1705 PubMed38706745
2024
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Nature communications 15:3771 PubMed38704377
2024
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ACS pharmacology & translational science 6:1829-1840 PubMed38093841
2023
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BMC gastroenterology 23:283 PubMed37582713
2023
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Journal for immunotherapy of cancer 11: PubMed37364935
2023
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ESMO open 8:100778 PubMed36791669
2023
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BMC cancer 23:44 PubMed36639622
2023
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Molecular therapy oncolytics 27:305-314 PubMed36570796
2022
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Product promise
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
For licensing inquiries, please contact partnerships@abcam.com