Description
Human Presenilin-1 ELISA Kit
The Human Presenilin-1 ELISA Kit is specifically designed for the precise quantification of Presenilin-1 levels in human samples including serum, plasma, and cell culture supernatants. This kit offers exceptional sensitivity and specificity, ensuring accurate and reproducible results for a variety of research purposes.Presenilin-1 is a key protein involved in processes related to Alzheimer's disease, including the production of amyloid beta peptides and the regulation of neuronal cell signaling.
Detecting and measuring Presenilin-1 levels can provide valuable insights into the pathogenesis of Alzheimer's disease and other neurodegenerative disorders, making this ELISA kit an essential tool for researchers studying these conditions and exploring potential therapeutic interventions.
| Product Name: | Human Presenilin-1 ELISA Kit |
| Product Code: | HUFI07066 |
| Size: | 96 Assays |
| Alias: | AD3 ELISA Kit, FAD ELISA Kit, Presenilin-1 ELISA Kit, Protein S182 ELISA Kit, PS 1 ELISA Kit, PS1 ELISA Kit, PS1 CTF12 ELISA Kit, PSEN1 ELISA Kit, PSNL1 ELISA Kit, S182 ELISA Kit |
| Detection method: | Sandwich ELISA, Double Antibody |
| Application: | This immunoassay kit allows for the in vitro quantitative determination of Human Presenilin-1 concentrations in serum plasma and other biological fluids. |
| Sensitivity: | < 0.188ng/ml |
| Range: | 0.313-20ng/ml |
| Storage: | 4°C for 6 months |
| Note: | For Research Use Only |
| Recovery: | Matrices listed below were spiked with certain level of Human Presenilin-1 and the recovery rates were calculated by comparing the measured value to the expected amount of Human Presenilin-1 in samples. Enquire for more information. |
| Linearity: | The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human Presenilin-1 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected. Enquire for more information. |
| CV(%): | Intra-Assay: CV<8% Inter-Assay: CV<10% |
| Component | Quantity | Storage |
| ELISA Microplate (Dismountable) | 8×12 strips | 4°C for 6 months |
| Lyophilized Standard | 2 | 4°C/-20°C |
| Sample/Standard Dilution Buffer | 20ml | 4°C |
| Biotin-labeled Antibody(Concentrated) | 120ul | 4°C (Protect from light) |
| Antibody Dilution Buffer | 10ml | 4°C |
| HRP-Streptavidin Conjugate(SABC) | 120ul | 4°C (Protect from light) |
| SABC Dilution Buffer | 10ml | 4°C |
| TMB Substrate | 10ml | 4°C (Protect from light) |
| Stop Solution | 10ml | 4°C |
| Wash Buffer(25X) | 30ml | 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
| UniProt Protein Function: | PSEN1: probable catalytic subunit of the gamma-secretase complex, an endoprotease complex that catalyzes the intramembrane cleavage of integral membrane proteins such as Notch receptors and APP (beta-amyloid precursor protein). Requires the other members of the gamma-secretase complex to have a protease activity. May play a role in intracellular signaling and gene expression or in linking chromatin to the nuclear membrane. Regulates epithelial- cadherin function. Five alternative splice isoforms have been identified. |
| UniProt Protein Details: | Protein type:Cell surface; Protease; Mitochondrial; Membrane protein, integral; Membrane protein, multi-pass; EC 3.4.23.- Chromosomal Location of Human Ortholog: 14q24.3 Cellular Component: Golgi apparatus; nuclear outer membrane; centrosome; cell surface; smooth endoplasmic reticulum; mitochondrion; lysosomal membrane; integral to plasma membrane; integral to membrane; lipid raft; ciliary rootlet; kinetochore; cell soma; membrane; perinuclear region of cytoplasm; mitochondrial inner membrane; apical plasma membrane; cytoplasmic vesicle; dendritic shaft; neuromuscular junction; endoplasmic reticulum membrane; nuclear membrane; rough endoplasmic reticulum; endoplasmic reticulum; cell cortex; Z disc; Golgi membrane; growth cone; axon Molecular Function:protein binding; cadherin binding; calcium channel activity; endopeptidase activity; beta-catenin binding; aspartic-type endopeptidase activity; PDZ domain binding Biological Process: positive regulation of catalytic activity; extracellular matrix organization and biogenesis; activation of MAPKK activity; positive regulation of apoptosis; beta-amyloid formation; regulation of synaptic plasticity; positive regulation of coagulation; Wnt receptor signaling pathway through beta-catenin; choline transport; T cell receptor signaling pathway; T cell activation during immune response; post-embryonic development; mitochondrial transport; extracellular matrix disassembly; positive regulation of MAP kinase activity; epithelial cell proliferation; cell-cell adhesion; negative regulation of axonogenesis; negative regulation of neuron apoptosis; embryonic limb morphogenesis; autophagic vacuole formation; somitogenesis; skin morphogenesis; regulation of phosphorylation; Notch receptor processing; negative regulation of ubiquitin-protein ligase activity; neuron development; Cajal-Retzius cell differentiation; hemopoietic progenitor cell differentiation; response to oxidative stress; negative regulation of apoptosis; regulation of synaptic transmission, glutamatergic; protein maturation; neuron migration; protein amino acid glycosylation; cell fate specification; myeloid dendritic cell differentiation; negative regulation of transcription from RNA polymerase II promoter; protein transport; amyloid precursor protein catabolic process; beta-amyloid metabolic process; regulation of resting membrane potential; brain morphogenesis; heart looping; positive regulation of receptor recycling; dorsoventral neural tube patterning; blood vessel development; Notch signaling pathway; L-glutamate transport; thymus development; membrane protein ectodomain proteolysis; memory; negative regulation of epidermal growth factor receptor activity; smooth endoplasmic reticulum calcium ion homeostasis; endoplasmic reticulum calcium ion homeostasis; neuron apoptosis; cerebral cortex cell migration; skeletal morphogenesis; regulation of protein binding; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; protein processing; synaptic vesicle targeting; response to DNA damage stimulus Disease: Pick Disease Of Brain; Alzheimer Disease 3; Frontotemporal Dementia; Acne Inversa, Familial, 3; Cardiomyopathy, Dilated, 1u |
| NCBI Summary: | Alzheimer's disease (AD) patients with an inherited form of the disease carry mutations in the presenilin proteins (PSEN1; PSEN2) or in the amyloid precursor protein (APP). These disease-linked mutations result in increased production of the longer form of amyloid-beta (main component of amyloid deposits found in AD brains). Presenilins are postulated to regulate APP processing through their effects on gamma-secretase, an enzyme that cleaves APP. Also, it is thought that the presenilins are involved in the cleavage of the Notch receptor, such that they either directly regulate gamma-secretase activity or themselves are protease enzymes. Several alternatively spliced transcript variants encoding different isoforms have been identified for this gene, the full-length nature of only some have been determined. [provided by RefSeq, Aug 2008] |
| UniProt Code: | P49768 |
| NCBI GenInfo Identifier: | 1709856 |
| NCBI Gene ID: | 5663 |
| NCBI Accession: | P49768.1 |
| UniProt Secondary Accession: | P49768,O95465, Q14762, Q15719, Q15720, Q96P33, Q9UIF0 B2R6D3, |
| UniProt Related Accession: | P49768 |
| Molecular Weight: | 48,997 Da |
| NCBI Full Name: | Presenilin-1 |
| NCBI Synonym Full Names: | presenilin 1 |
| NCBI Official Symbol: | PSEN1 |
| NCBI Official Synonym Symbols: | AD3; FAD; PS1; PS-1; S182 |
| NCBI Protein Information: | presenilin-1 |
| UniProt Protein Name: | Presenilin-1 |
| UniProt Synonym Protein Names: | Protein S182Cleaved into the following 3 chains:Presenilin-1 NTF subunit; Presenilin-1 CTF subunit; Presenilin-1 CTF12; PS1-CTF12 |
| Protein Family: | FHA domain-containing protein |
| UniProt Gene Name: | PSEN1 |
| UniProt Entry Name: | PSN1_HUMAN |
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37 °C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.
| Step | Protocol |
| 1. | Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells! |
| 2. | Aliquot 0.1ml standard solutions into the standard wells. |
| 3. | Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well. |
| 4. | Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells. |
| 5. | Seal the plate with a cover and incubate at 37 °C for 90 min. |
| 6. | Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2. |
| 7. | Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall. |
| 8. | Seal the plate with a cover and incubate at 37 °C for 60 min. |
| 9. | Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash. |
| 10. | Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37 °C for 30 min. |
| 11. | Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min. |
| 12. | Add 90 µL of TMB substrate into each well, cover the plate and incubate at 37 °C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color. |
| 13. | Add 50 µL of Stop solution into each well and mix thoroughly. The color changes into yellow immediately. |
| 14. | Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution. |
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. |
