Tested Applications
| Positive WB detected in | A549 cells, HeLa cells, HUVEC cells, MDA-MB-231 cells |
| Positive IP detected in | HeLa cells |
| Positive IHC detected in | human lung cancer tissue, human colon cancer tissue, human oesophagus cancer tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
| Positive IF-P detected in | human colon cancer tissue |
| Positive IF/ICC detected in | HeLa cells, human colon cancer tissue, A375 cells, HUVEC cells, UCMSCs cells |
Recommended dilution
| Application | Dilution |
|---|---|
| Western Blot (WB) | WB : 1:5000-1:50000 |
| Immunoprecipitation (IP) | IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate |
| Immunohistochemistry (IHC) | IHC : 1:500-1:2000 |
| Immunofluorescence (IF)-P | IF-P : 1:50-1:500 |
| Immunofluorescence (IF)/ICC | IF/ICC : 1:50-1:500 |
| It is recommended that this reagent should be titrated in each testing system to obtain optimal results. | |
| Sample-dependent, Check data in validation data gallery. | |
Product Information
15675-1-AP targets CD44 in WB, IHC, IF/ICC, IF-P, IP, CoIP, Neutralization, ELISA applications and shows reactivity with human samples.
| Tested Reactivity | human |
| Cited Reactivity | human, bovine, goat, sika deer |
| Host / Isotype | Rabbit / IgG |
| Class | Polyclonal |
| Type | Antibody |
| Immunogen |
CatNo: Ag8143 Product name: Recombinant human CD44 protein Source: e coli.-derived, PGEX-4T Tag: GST Domain: 28-380 aa of BC004372 Sequence: CRFAGVFHVEKNGRYSISRTEAADLCKAFNSTLPTMAQMEKALSIGFETCRYGFIEGHVVIPRIHPNSICAANNTGVYILTSNTSQYDTYCFNASAPPEEDCTSVTDLPNAFDGPITITIVNRDGTRYVQKGEYRTNPEDIYPSNPTDDDVSSGSSSERSSTSGGYIFYTFSTVHPIPDEDSPWITDSTDRIPATSTSSNTISAGWEPNEENEDERDRHLSFSGSGIDDDEDFISSTISTTPRAFDHTKQNQDWTQWNPSHSNPEVLLQTTTRMTDVDRNGTTAYEGNWNPEAHPPLIHHEHHEEEETPHSTSTIQATPSSTTEETATQKEQWFGNRWHEGYRQTPREDSHST Predict reactive species |
| Full Name | CD44 molecule (Indian blood group) |
| Calculated Molecular Weight | 742 aa, 82 kDa |
| Observed Molecular Weight | 80-95 kDa |
| GenBank Accession Number | BC004372 |
| Gene Symbol | CD44 |
| Gene ID (NCBI) | 960 |
| ENSEMBL Gene ID | ENSG00000026508 |
| RRID | AB_2076198 |
| Conjugate | Unconjugated |
| Form | Liquid |
| Purification Method | Antigen affinity purification |
| UNIPROT ID | P16070 |
| Storage Buffer | PBS with 0.02% sodium azide and 50% glycerol, pH 7.3. |
| Storage Conditions | Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA. |
Background Information
CD44 is a type I transmembrane glycoprotein that mediates cell-cell and cell-matrix interactions through its affinity for hyaluronic acid (HA) and possibly also through its affinity for other ligands. Adhesion with HA plays an important role in cell migration, tumor growth and progression. CD44 is also involved in lymphocyte activation, recirculation and homing, and in hematopoiesis. This protein exists in multiple forms (with molecular weight ranging from 16 kDa to over 200 kDa) generated by alternative RNA splicing and extensive post-translational modifications.
Protocols
| Product Specific Protocols | |
|---|---|
| IF protocol for CD44 antibody 15675-1-AP | Download protocol |
| IHC protocol for CD44 antibody 15675-1-AP | Download protocol |
| IP protocol for CD44 antibody 15675-1-AP | Download protocol |
| WB protocol for CD44 antibody 15675-1-AP | Download protocol |
| Standard Protocols | |
|---|---|
| Click here to view our Standard Protocols |
Publications
What published studies show
The anti-CD44 antibody (Cat# 15675-1-AP) has accumulated 481 total citations published in prestigious journals such as Nature, Cell, Nature Communications, Cancer Research, Journal of Clinical Investigation, Advanced Science, Theranostics, Oncogene, and Cell Reports. Key research fields include cancer stem cell biology, epithelial-mesenchymal transition, ferroptosis, Wnt/β-catenin signaling, nanomedicine and drug delivery, tumor immunotherapy, neuroinflammation, fibrosis, cardiovascular disease, and tissue regeneration.
| Species | Application | Title |
|---|---|---|
Signal Transduct Target Ther Targeting cancer cell plasticity by HDAC inhibition to reverse EBV-induced dedifferentiation in nasopharyngeal carcinoma. | ||
Cell Early rhombic lip Protogenin+ve stem cells in a human-specific neurovascular niche initiate and maintain group 3 medulloblastoma | ||
Mol Cancer Integrated single-cell and spatial transcriptomic profiling decodes lineage plasticity and immune microenvironment remodeling in prostate cancer progression. | ||
Nanomicro Lett Molecular Mechanisms of Intracellular Delivery of Nanoparticles Monitored by an Enzyme-Induced Proximity Labeling | ||
Gastroenterology BRD9-SMAD2/3 orchestrates stemness and tumorigenesis in pancreatic ductal adenocarcinoma |
Reviews
What customers say
All three reviews are 5-star. Users consistently report excellent performance of this CD44 antibody across Western Blot, Immunohistochemistry, and Immunofluorescence. Recommended dilutions include 1:700–1:1000 for WB (overnight at 4°C) and 1:200 for IF on cultured cells. One reviewer called it a "wonderful antibody" that "works very beautifully," while another simply confirmed it is "working very well." Overall, customers express strong satisfaction with its reliability and ease of use across multiple applications.
The reviews below have been submitted by verified Proteintech customers who received an incentive for providing their feedback.
Mounika (Verified Customer) (01-08-2026) | Wonderful Antibodies ever seen, works very beautifully!
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Sai Sindhura (Verified Customer) (12-22-2025) | CD44 is working very well.
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Kishor (Verified Customer) (06-23-2019) | This antibody works very good at 1:1000 in WB over night at 4o C and 1:200 for IF in cultured cells.
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