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Porcine Pulmonary surfactant-associated protein A (SFTPA1) ELISA Kit (PREB0225)

SKU:
PREB0225
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
P49874
ELISA Type:
Sandwich
Reactivity:
Porcine
€699
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Description

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Porcine Pulmonary surfactant-associated protein A (SFTPA1) ELISA Kit

The Porcine Pulmonary Surfactant-Associated Protein A (SFTPA1) ELISA Kit is a highly reliable and sensitive assay designed for the accurate measurement of SFTPA1 levels in porcine samples. This kit is suitable for use with serum, plasma, and cell culture supernatants, providing researchers with precise results for a variety of applications.SFTPA1 is a key protein involved in pulmonary surfactant function, playing a critical role in maintaining the integrity of the alveoli and protecting the lungs from damage. Dysregulation of SFTPA1 has been linked to various respiratory diseases and disorders, making it a valuable biomarker for studying these conditions and exploring potential therapeutic interventions.

With its high sensitivity and specificity, the Porcine Pulmonary Surfactant-Associated Protein A (SFTPA1) ELISA Kit offers researchers a powerful tool for studying the role of SFTPA1 in pulmonary health and disease. Trust in this kit to deliver accurate and reproducible results, ultimately advancing our understanding of respiratory biology and paving the way for improved clinical outcomes.

Product Name:Porcine Pulmonary surfactant-associated protein A (SFTPA1) ELISA Kit
SKU:PREB0225
Size:96T
Target:Porcine Pulmonary surfactant-associated protein A (SFTPA1)
Synonyms:PSAP, SFTP1, SFTPA
Detection Method:ELISA
Reactivity:Pig
Intra CV:Provided with the Kit
Inter CV:Provided with the Kit
Linearity:Provided with the Kit
Recovery:Provided with the Kit
Function:In presence of calcium ions, it binds to surfactant phospholipids and contributes to lower the surface tension at the air-liquid interface in the alveoli of the mammalian lung and is essential for normal respiration. Enhances the expression of MYO18A/SP-R210 on alveolar macrophages.
Uniprot:P49874
Sample Type:Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids
Specificity:Natural and recombinant pig Pulmonary surfactant-associated protein A
Sub Unit:Oligomeric complex of 6 set of homotrimers.
Research Area:Signal Transduction
Subcellular Location:Secreted Extracellular space Extracellular matrix Secreted Extracellular space Surface film
Storage:Please see kit components below for exact storage details
Note:For research use only
UniProt Protein Function:Function: In presence of calcium ions, PSAP binds to surfactant phospholipids and contributes to lower the surface tension at the air-liquid interface in the alveoli of the mammalian lung and is essential for normal respiration.Subunit structure: Oligomeric complex of 6 set of homotrimers.Subcellular location: Secreted › extracellular space › extracellular matrix. Secreted › extracellular space › surface film. Miscellaneous: Pulmonary surfactant consists of 90% lipid and 10% protein. There are 4 surfactant-associated proteins: 2 collagenous, carbohydrate-binding glycoproteins (SP-A and SP-D) and 2 small hydrophobic proteins (SP-B and SP-C).Sequence similarities: Belongs to the SFTPA family.Contains 1 C-type lectin domain.Contains 1 collagen-like domain.
UniProt Protein Details:
NCBI Summary:
UniProt Code:P49874
NCBI GenInfo Identifier:47523604
NCBI Gene ID:397503
NCBI Accession:NP_999430.1
UniProt Secondary Accession:P49874
UniProt Related Accession:P49874
Molecular Weight:26,702 Da
NCBI Full Name:pulmonary surfactant-associated protein A
NCBI Synonym Full Names:
NCBI Official Symbol:SFTPA1
NCBI Official Synonym Symbols:PSP-A; SFTPA
NCBI Protein Information:pulmonary surfactant-associated protein A; PSAP; SP-A
UniProt Protein Name:Pulmonary surfactant-associated protein A
UniProt Synonym Protein Names:
Protein Family:Protein
UniProt Gene Name:SFTPA1
UniProt Entry Name:SFTPA_PIG
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.

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