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Human Transthyretin (TTR) ELISA Kit (HUEB0828)

SKU:
HUEB0828
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
P02766
Range:
0.78-50 ng/mL
ELISA Type:
Sandwich
Synonyms:
TTR, Transthyretin, PALB, TBPA, ATTR, Prealbumin, HsT2651, prealbumin, amyloidosis type I, thyroxine-binding prealbumin
Reactivity:
Human
€649

Description

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Human Transthyretin (TTR) ELISA Kit

The Human Transthyretin (TTR) ELISA Kit is a valuable tool for the precise measurement of transthyretin levels in human samples including serum, plasma, and cell culture supernatants. With its exceptional sensitivity and specificity, this kit delivers accurate and consistent results, making it an indispensable resource for various research applications.Transthyretin, also known as prealbumin, is a key protein involved in transporting thyroid hormones and retinol-binding protein. Dysregulation of transthyretin has been linked to various diseases such as familial amyloid polyneuropathy and senile systemic amyloidosis.

Therefore, monitoring transthyretin levels can provide insights into disease progression and aid in the development of potential treatments.Overall, the Human Transthyretin (TTR) ELISA Kit is a reliable and efficient tool for studying the role of transthyretin in health and disease, offering researchers a comprehensive solution for their experimental needs.

Product Name:Human Transthyretin (TTR) ELISA Kit
SKU:HUEB0828
Size:96T
Target:Human Transthyretin (TTR)
Synonyms:ATTR, Prealbumin, TBPA, PALB
Assay Type:Sandwich
Detection Method:ELISA
Reactivity:Human
Detection Range:0.78-50ng/mL
Sensitivity:0.21ng/mL
Intra CV:5.1%
Inter CV:9.2%
Linearity:
Sample1:21:41:81:16
Serum(N=5)108-118%105-115%81-91%89-99%
EDTA Plasma(N=5)105-114%106-116%91-101%97-106%
Heparin Plasma(N=5)105-117%108-118%97-109%107-117%
Recovery:
Sample TypeAverage(%)Recovery Range(%)
Serum10296-108
Plasma10498-110
Function:Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.
Uniprot:P02766
Sample Type:Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids
Specificity:Natural and recombinant human Transthyretin
Sub Unit:Homotetramer. Dimer of dimers. In the homotetramer, subunits assemble around a central channel that can accommodate two ligand molecules. Interacts with RBP4.
Research Area:Neurosciences
Subcellular Location:Secreted Cytoplasm
Storage:Please see kit components below for exact storage details
Note:For research use only
UniProt Protein Function:TTR: Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain. Defects in TTR are the cause of amyloidosis transthyretin-related (AMYL-TTR). A hereditary generalized amyloidosis due to transthyretin amyloid deposition. Protein fibrils can form in different tissues leading to amyloid polyneuropathies, amyloidotic cardiomyopathy, carpal tunnel syndrome, systemic senile amyloidosis. The disease includes leptomeningeal amyloidosis that is characterized by primary involvement of the central nervous system. Neuropathologic examination shows amyloid in the walls of leptomeningeal vessels, in pia arachnoid, and subpial deposits. Some patients also develop vitreous amyloid deposition that leads to visual impairment (oculoleptomeningeal amyloidosis). Clinical features include seizures, stroke-like episodes, dementia, psychomotor deterioration, variable amyloid deposition in the vitreous humor. Defects in TTR are a cause of hyperthyroxinemia dystransthyretinemic euthyroidal (HTDE). It is a condition characterized by elevation of total and free thyroxine in healthy, euthyroid persons without detectable binding protein abnormalities. Defects in TTR are a cause of carpal tunnel syndrome type 1 (CTS1). It is a condition characterized by entrapment of the median nerve within the carpal tunnel. Symptoms include burning pain and paresthesias involving the ventral surface of the hand and fingers which may radiate proximally. Impairment of sensation in the distribution of the median nerve and thenar muscle atrophy may occur. This condition may be associated with repetitive occupational trauma, wrist injuries, amyloid neuropathies, rheumatoid arthritis. Belongs to the transthyretin family.
UniProt Protein Details:

Protein type:Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 18q12.1

Cellular Component: extracellular space; protein complex; cytoplasm; extracellular region

Molecular Function:identical protein binding; protein binding; protein heterodimerization activity; hormone activity

Biological Process: phototransduction, visible light; extracellular matrix organization and biogenesis; retinol metabolic process; transport; retinoid metabolic process

Disease: Hyperthyroxinemia, Dystransthyretinemic; Carpal Tunnel Syndrome; Amyloidosis, Hereditary, Transthyretin-related

NCBI Summary:This gene encodes transthyretin, one of the three prealbumins including alpha-1-antitrypsin, transthyretin and orosomucoid. Transthyretin is a carrier protein; it transports thyroid hormones in the plasma and cerebrospinal fluid, and also transports retinol (vitamin A) in the plasma. The protein consists of a tetramer of identical subunits. More than 80 different mutations in this gene have been reported; most mutations are related to amyloid deposition, affecting predominantly peripheral nerve and/or the heart, and a small portion of the gene mutations is non-amyloidogenic. The diseases caused by mutations include amyloidotic polyneuropathy, euthyroid hyperthyroxinaemia, amyloidotic vitreous opacities, cardiomyopathy, oculoleptomeningeal amyloidosis, meningocerebrovascular amyloidosis, carpal tunnel syndrome, etc. [provided by RefSeq, Jan 2009]
UniProt Code:P02766
NCBI GenInfo Identifier:136464
NCBI Gene ID:7276
NCBI Accession:P02766.1
UniProt Secondary Accession:P02766,Q549C7, Q6IB96, Q9UBZ6, Q9UCM9,
UniProt Related Accession:P02766
Molecular Weight:55,000
NCBI Full Name:Transthyretin
NCBI Synonym Full Names:transthyretin
NCBI Official Symbol:TTR
NCBI Official Synonym Symbols:CTS; CTS1; PALB; TBPA; HEL111; HsT2651
NCBI Protein Information:transthyretin; ATTR; carpal tunnel syndrome 1; thyroxine-binding prealbumin; epididymis luminal protein 111; prealbumin, amyloidosis type I
UniProt Protein Name:Transthyretin
UniProt Synonym Protein Names:ATTR; Prealbumin; TBPA
Protein Family:Transthyretin
UniProt Gene Name:TTR
UniProt Entry Name:TTHY_HUMAN
Component Quantity (96 Assays) Storage
ELISA Microplate (Dismountable) 8×12 strips -20°C
Lyophilized Standard 2 -20°C
Sample Diluent 20ml -20°C
Assay Diluent A 10mL -20°C
Assay Diluent B 10mL -20°C
Detection Reagent A 120µL -20°C
Detection Reagent B 120µL -20°C
Wash Buffer 30mL 4°C
Substrate 10mL 4°C
Stop Solution 10mL 4°C
Plate Sealer 5 -

Other materials and equipment required:

  • Microplate reader with 450 nm wavelength filter
  • Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
  • Incubator
  • Deionized or distilled water
  • Absorbent paper
  • Buffer resevoir

*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.

Step
1. Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2. Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3. Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4. Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5. Repeat the wash process for five times as conducted in step 3.
6. Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7. Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8. Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9. After experiment, store all reagents according to the specified storage temperature respectively until their expiry.

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample Type Protocol
Serum If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Plasma Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell lysates Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Tissue homogenates The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Tissue lysates Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.
ELISAAntibodies
Human Prealbumin / Transthyretin ELISA KitAnti-TTR Antibody (CAB1120)
Human TTR (Transthyretin) CLIA Kit (HUES01212)Anti-TTR Antibody (CAB12526)
Anti-TTR Antibody (CAB3186)
Anti-TTR Antibody (CAB4067)
Anti-TTR Antibody (MACO0439)

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