Aquaporin-4 (AQP4), also known as mercurial-insensitive water channel (MIWC), is a water channel protein predominantly expressed in central nervous system (CNS) astrocytes. It mediates rapid transmembrane water transport, critical for maintaining CNS water homeostasis. Its function is regulated by PKA/PKC-mediated phosphorylation, which modulates membrane localization and water permeability.
AQP4 is the key autoantigen in neuromyelitis optica spectrum disorders (NMOSD), where autoantibodies damage astrocytes and trigger inflammation. It also contributes to cerebral edema in stroke or traumatic brain injury. Satralizumab, a monoclonal antibody targeting anti-AQP4 autoantibodies, is approved for NMOSD; AQP4 inhibitors are under investigation to reduce edema in CNS injuries.
Recombinant Human Aquaporin-4 (AQP4), partial, Biotinylated (CSB-EP001964HU-B)
Validated Data
(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
AQP4 Recombinant Monoclonal Antibody (CSB-RA548145A0HU)
Validated Data
IHC image of CSB-RA548145A0HU diluted at 1:50 and staining in paraffin-embedded human lung cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a Goat anti-rabbit polymer IgG labeled by HRP and visualized using 0.33% DAB.
AQP4 Antibody (CSB-PA11137A0Rb)
Validated Data
Western blot
All lanes: AQP4 antibody at 2µg/ml
Lane 1: Mouse heart tissue
Lane 2: Mouse brain tissue
Lane 3: Mouse kidney tissue
Secondary
Goat polyclonal to rabbit IgG at 1/10000 dilution
Predicted band size: 35, 33 kDa
Observed band size: 35 kDa
IHC image of CSB-PA11137A0Rb diluted at 1:370 and staining in paraffin-embedded human lung cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.
IHC image of CSB-PA11137A0Rb diluted at 1:370 and staining in paraffin-embedded human brain tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.
Immunofluorescence staining of U251 cells with CSB-PA11137A0Rb at 1:166, counter-stained with DAPI. The cells were fixed in 4% formaldehyde, permeabilized using 0.2% Triton X-100 and blocked in 10% normal Goat Serum. The cells were then incubated with the antibody overnight at 4°C. The secondary antibody was Alexa Fluor 488-congugated AffiniPure Goat Anti-Rabbit IgG(H+L).
Human Aquaporin 4,AQP-4 ELISA Kit (CSB-E08254h)
Validated Data
Code: CSB-E08254h
Size: 96T,5×96T,10×96T
Sensitivity: 0.039 ng/mL
Detection Range: 0.156 ng/mL-10 ng/mL
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
The following AQP4 reagents supplied by CUSABIO are manufactured under a strict quality control system. Multiple applications have been validated and solid technical support is offered.
AQP4 Antibodies for Homo sapiens (Human)
| Code | Product Name | Species Reactivity | Application |
|---|---|---|---|
| CSB-PA001964GA01HU | AQP4 Antibody | Human,Mouse,Rat | ELISA,WB,IHC |
| CSB-PA001964ESR1HU | AQP4 Antibody | Human, Mouse | ELISA, WB |
| CSB-MA0019641A0m | Mouse anti- Human AQP4 monoclonal antibody | Human,Other species are not tested.Please decide the specificity by human AQP4 | ELISA, WB and other possible application |
| CSB-PA11137A0Rb | AQP4 Antibody | Human, Mouse | ELISA, WB, IHC, IF |
| CSB-PA11137B0Rb | AQP4 Antibody, HRP conjugated | Human | ELISA |
| CSB-PA11137D0Rb | AQP4 Antibody, Biotin conjugated | Human | ELISA |
| CSB-MA000219 | AQP4 Monoclonal Antibody | Human,Mouse,Rat | ELISA,WB,IHC,IF |
| CSB-PA000914 | AQP4 Antibody | Human,Mouse,Rat | WB, IHC, ELISA |
| CSB-PA579941 | AQP4 Antibody | Human,Mouse,Rat | ELISA,WB,IHC |
| CSB-PA905782 | AQP4 Antibody | Human,Mouse,Rat | ELISA,WB,IHC |
| CSB-RA548145A0HU | AQP4 Recombinant Monoclonal Antibody | Human | ELISA, IHC |
AQP4 Proteins for Homo sapiens (Human)
| Code | Product Name | Source |
|---|---|---|
| CSB-YP001964HU | Recombinant Human Aquaporin-4 (AQP4), partial | Yeast |
| CSB-EP001964HU | Recombinant Human Aquaporin-4 (AQP4), partial | E.coli |
| CSB-BP001964HU CSB-MP001964HU |
Recombinant Human Aquaporin-4 (AQP4), partial | Baculovirus Mammalian cell |
| CSB-EP001964HU-B | Recombinant Human Aquaporin-4 (AQP4), partial, Biotinylated | E.coli |
| CSB-CF001964HU(A4) | Recombinant Human Aquaporin-4(AQP4) | in vitro E.coli expression system |
AQP4 ELISA Kit for Homo sapiens (Human)
| Code | Product Name | Sample Types | Sensitivity |
|---|---|---|---|
| CSB-E08254h | Human Aquaporin 4,AQP-4 ELISA Kit | serum, plasma, tissue homogenates | 0.039 ng/mL |