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AB229394

Human Tau ELISA Kit, Fluorescent

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Human Tau ELISA Kit, Fluorescent is a single-wash 90-min Simplestep used to quantify Human Tau with a sensitivity of 2.9 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step.

- Fluorescent Sandwich ELISA - 530/570/590 nm readout : works on any standard plate reader
- Validated on a number of sample types including cerebrospinal fluid (CSF)

View Alternative Names

MAPTL, MTBT1, TAU, MAPT, Microtubule-associated protein tau, Neurofibrillary tangle protein, Paired helical filament-tau, PHF-tau

3 Images
ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)
  • ELISA

Supplier Data

ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)
Sandwich ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)
  • sELISA

Unknown

Sandwich ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)

Example of human Tau standard curve in Sample Diluent NS.

The Tau standard curve was prepared as described in Section 10.

Sandwich ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)
  • sELISA

Unknown

Sandwich ELISA - Human Tau ELISA Kit, Fluorescent (AB229394)

Interpolated concentrations of native Tau in human SH-SY5Y cell treated with or without 1 µM staurosporine.

The concentrations of Tau were measured in duplicate and interpolated from the Tau standard curve and corrected for sample dilution. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Tau concentration was determined to be 2,500 pg/mL in SH-SY5Y mock treated extract, 2,233 pg/mL in SH-SY5Y staurosporine treated extract and 1,849 pg/mL in human brain extract. Staurosporine treatment induces Tau cleavage. ab269557 , the cleaved Tau fragment can be specifically measured using ab269557, Cleaved Tau ELISA Kit (Human Asp738/Mouse Asp713).

Key facts

Detection method

Fluorescent

Sample types

Cerebral Spinal Fluid, Cell culture extracts, Tissue Extracts, Heparin Plasma, Serum, Cell Lysate, EDTA Plasma

Reacts with

Human

Assay type

Sandwich (quantitative)

Sensitivity

= 2.9 pg/mL

Range

5.08 - 20800 pg/mL

Assay time

1h 30m

Assay Platform

Pre-coated microplate (12 x 8 well strips)

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "sELISA": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

Product details

Human Tau ELISA Kit, Fluorescent ab229394 is a rapid single-wash 90-min sandwich ELISA to measure Human Tau in serum, heparin plasma, EDTA plasma, cerebral spinal fluid (CSF), cell culture extracts, cell lysate, tissue extracts. This CatchPoint SimpleStep sensitivity is 2.9 pg/mL.

How the assay works

Human Tau CatchPoint SimpleStep ELISA employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. CatchPoint HRP Development Solution containing the Stoplight Red Substrate is added. During incubation, the substrate is catalyzed by HRP generating a fluorescent product. Signal is generated proportionally to the amount of bound analyte and the intensity is measured in a fluorescence plater reader at 530/570/590 nm Excitation/Cutoff/Emission. This kit is optimised for Molecular Devices Readers: If using a Molecular Devices' plate reader supported by SoftMax® Pro software, a preconfigured protocol for these CatchPoint SimpleStep ELISA Kits is available with all the protocol and analysis settings at www.softmaxpro.org.

Assay Specificity

Our SimpleStep ELISA® kits use recombinant monoclonal antibodies rigorously validated to ensure the highest level of consistency and reproducibility, improved sensitivity and specificity and ease of scalability and security of supply.
Please refer to our protocol booklet for more details.

Human Tau ELISA Kit, Fluorescent ab229394 protocol summary

1. Mix: add samples/standards to the wells together with the capture and detector antibody cocktail. Incubate 1 hr at room temperature
2. Wash
3. Add TMB development solution - incubate for 10 min
4. Add Stop solution
5. Read the results on a fluorescent plate reader at 530/570/590 nm Excitation/Cutoff/Emission.

Colorimetric version

This kit is also available with a colorimetric readout as Human Tau ELISA Kit ab273617.
Both the fluroescent and colorimetric version share the same antibody pair and protein standard.

Design your own immunoassay

We offer the antibody pair used in this kit in a BSA and Azide-free format, ready for conjugation

- Anti-Tau antibody [EPR22524-211] - BSA and Azide free (Capture) ab259552
- Anti-Tau antibody [EPR22521-17] - BSA and Azide free (Detector) ab259658.

Tau proteins constitute nine isoforms from a single transcript from the MAPT gene that range from 33-81 kDa. Tau proteins are expressed mainly in the neurons of the central nervous systems. They promote microtubule assembly and stability and might be involved in the establishment and maintenance of neuronal polarity. The C-terminus of Tau binds axonal microtubules while the N-terminus binds neural plasma membrane components, suggesting that Tau functions as a linker protein between both. Hyperphosphorylation of Tau proteins can result in destabilization of microtubule organization, Tau aggregation, and tangle formation. Defective Tau proteins may play a role in diseases of the nervous systems, including Alzheimer disease, Pick disease of the brain, Progressive supranuclear palsy 1 and Parkinson-dementia syndrome. Based on the immunogen design of this ELISA antibody pair, this kit should detect all nine human Tau isoforms and it should have equal affinity towards human, mouse and rat Tau proteins.

REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.

Precision

[ { "reproducibilityType": "Inter", "sample": "Serum", "replicates": 3, "mean": null, "standardDeviation": null, "coefficientOfVariability": "2.7" }, { "reproducibilityType": "Intra", "sample": "Serum", "replicates": 8, "mean": null, "standardDeviation": null, "coefficientOfVariability": "5.5" } ]

Recovery

[ { "sample": "Serum", "range": "76 - 84 %", "average": "= 79" }, { "sample": "EDTA Plasma", "range": "75 - 83 %", "average": "= 78" }, { "sample": "Cerebral Spinal Fluid", "range": "89 - 90 %", "average": "= 90" }, { "sample": "Tissue Extracts", "range": "101 - 111 %", "average": "= 108" }, { "sample": "Heparin Plasma", "range": "70 - 82 %", "average": "= 75" }, { "sample": "Cell Lysate", "range": "94 - 101 %", "average": "= 97" }, { "sample": "Cell culture media", "range": "84 - 91 %", "average": "= 86" } ]

What's included?

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Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
+4°C

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Tau also known as microtubule-associated protein Tau (MAPT) plays an important role in stabilizing microtubules in neuronal cells. Tau is primarily found in the central nervous system but also exists in peripheral neurons. Human Tau protein comes in six isoforms due to alternative splicing with molecular weights ranging from 48 kDa to 67 kDa. This protein predominantly locates in the axons of neurons where it maintains the stability of microtubule tracks necessary for axonal transport.
Biological function summary

Tau is involved in the assembly and stabilization of microtubules essential for maintaining neuronal structure. It interacts with microtubule-binding domains (MBD) to bind and bundle microtubules facilitating intracellular transport. Tau forms a part of the neuronal cytoskeleton complex working closely with other cytoskeletal proteins to preserve the proper axonal transport and function. Abnormally phosphorylated Tau often termed phospho-Tau disrupts this complex affecting microtubule stability.

Pathways

Tau has critical involvement in several signaling cascades such as the microtubule-binding and transport pathways. Glycogen synthase kinase 3 beta (GSK3β) and cyclin-dependent kinase 5 (CDK5) frequently phosphorylate Tau controlling its interaction with microtubules. Phosphorylated Tau accumulates leading to the formation of neurofibrillary tangles often observed in neurodegenerative conditions. Additionally Tau interacts with GAPDH impacting cellular energy regulation through potential pathway cross-talk involving oxidative stress responses.

Tau is closely associated with Alzheimer's disease and frontotemporal dementia. In Alzheimer's disease hyperphosphorylated Tau aggregates into paired helical filaments forming neurofibrillary tangles while similar aggregates are observed in frontotemporal dementia. In these conditions Tau links to amyloid precursor protein (APP) where misregulated phosphorylation-driven interactions contribute to neurodegeneration. Identifying phospho-Tau and its altered interactions with related proteins aids in understanding and potentially treating these disorders.

Product protocols

Target data

The protein expressed by the MAPT gene promotes microtubule assembly and stability and might be involved in establishing and maintaining neuronal polarity. Its C-terminus binds axonal microtubules, and the N-terminus binds neural plasma membrane components, suggesting that tau functions as a linker protein between the two. Axonal polarity is predetermined by MAPT localization within the neuronal cell's domain defined by the centrosome. The short isoforms allow cytoskeleton plasticity, whereas the longer isoforms may preferentially play a role in its stabilization. This supplementary information is collated from multiple sources and compiled automatically.
See full target information MAPT
websiteProtocolBooklet
en

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