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SNAI1 (Phospho-Ser246) Fluorometric Cell-Based ELISA Kit

SKU:
FBCAB00058
Product type:
ELISA Kit
ELISA Type:
Cell Based
€599

Description

Technical Manual

SNAI1 (Phospho-Ser246) Cell-Based ELISA Kit

The SNAI1 (Phospho-Ser246) Cell-Based ELISA Kit is a convenient, lysate- free, high throughput and sensitive assay kit that can monitor SNAI1 phosphorylation and expression profile in cells. The kit can be used for measuring the relative amounts of phosphorylated SNAI1 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on SNAI1 phosphorylation.

How does our SNAI1 (Phospho-Ser246) Fluorometric Cell-Based ELISA Kit work?

Qualitative determination of SNAI1 (Phospho-Ser246) concentration is achieved by an indirect ELISA format. In essence, SNAI1 (Phospho-Ser246) is captured by SNAI1 (Phospho-Ser246)-specific primary (1°) antibodies while Dye 1-conjugated and Dye 2-conjugated secondary (2°) antibodies bind the Fc region of the 1° antibody. Through this binding, the dye conjugated to the 2° antibody can emit light at a certain wavelength given proper excitation, hence allowing for a fluorometric detection method. Due to the qualitative nature of the Cell-Based ELISA, multiple normalization methods are needed:

1. A monoclonal antibody specific for human GAPDH is included to serve as an internal positive control in normalizing the target RFU values.
2. An antibody against the nonphosphorylated counterpart of SNAI1 (Phospho-Ser246) is also provided for normalization purposes. The RFU values obtained for non-phosphorylated SNAI1 can be used to normalize the RFU value for phosphorylated SNAI1.

SNAI1 (Phospho-Ser246) Fluorometric Cell-Based ELISA Kit -Information

Product Name:SNAI1 (Phospho-Ser246) Fluorometric Cell-Based ELISA Kit
Product Code/SKU:FBCAB00058
Description:The SNAI1 (Phospho-Ser246) Fluorometric Cell-Based Phospho ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor SNAI1 (Phospho-Ser246) protein phosphorylation and expression profile in cells. The kit can be used for measuring the relative amounts of phosphorylated SNAI1 (Phospho-Ser246) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals, or activators have on SNAI1 phosphorylation.
Dynamic Range:> 5000 Cells
Detection Method:Fluorometric
Storage/Stability:4°C/6 Months
Reactivity:Human, Mouse
Assay Type:Cell-Based ELISA
Database Links:Gene ID: 6615, UniProt ID: O95863, OMIM #: 604238, Unigene #: Hs.48029
Format:Two 96-Well Plates
NCBI Gene Symbol:SNAI1
Sub Type:Phospho
Target Name:Phospho-SNAI1 (Ser246)

Kit Principle

Figure: Schematic representation of Assay Genie Cell-Based Fluorometric ELISA principle

Kit components

Quantity

96-Well Black Cell CultureClear-Bottom Microplate2 plates
10X TBS24 ml
Quenching Buffer24 ml
Blocking Buffer50 ml
15X Wash Buffer50 ml
Primary Antibody Diluent12 ml
100x Anti-Phospho Target Antibody 60 µl
100x Anti-Target Antibody60 µl
Anti-GAPDH Antibody110 µl
Dye-1 Conjugated Anti-Rabbit IgG Antibody6 ml
Dye-2 Conjugated Anti-Mouse IgG Antibody6 ml
Adhesive Plate Seals2 seals

Additional equipment and materials required

The following materials and/or equipment are NOT provided in this kit but are necessary to successfully conduct the experiment:

  • Fluorescent plate reader with two channels at Ex/Em: 651/667 and 495/521
  • Micropipettes capable of measuring volumes from 1 µl to 1 ml
  • Deionized or sterile water (ddH2O)
  • 37% formaldehyde (Sigma Cat# F-8775) or formaldehyde from other sources
  • Squirt bottle, manifold dispenser, multichannel pipette reservoir or automated microplate washer
  • Graph paper or computer software capable of generating or displaying logarithmic functions
  • Absorbent papers or vacuum aspirator
  • Test tubes or microfuge tubes capable of storing ≥1 ml
  • Poly-L-Lysine (Sigma Cat# P4832 for suspension cells)
  • Orbital shaker (optional)

Kit Protocol

This is a summarized version of the kit protocol. Please view the technical manual of this kit for information on sample preparation, reagent preparation and plate lay out.

1.Seed 200 µl of desired cell concentration in culture medium into each well of the 96-well plates. For suspension cells and loosely attached cells, coat the plates with 100 µl of 10 µg/ml Poly-L-Lysine (not included) to each well of a 96-well plate for 30 minutes at 37°C prior to adding cells.
2.Incubate the cells for overnight at 37°C, 5% CO2.
3.Treat the cells as desired.
4.Remove the cell culture medium and rinse with 200 µl of 1x TBS, twice.
5.Fix the cells by incubating with 100 µl of Fixing Solution for 20 minutes at room temperature. The 4% formaldehyde is used for adherent cells and 8% formaldehyde is used for suspension cells and loosely attached cells.
6.Remove the Fixing Solution and wash the plate 3 times with 200 µl 1x Wash Buffer for 3 minutes. The plate can be stored at 4°C for a week.
7.Add 100 µl of Quenching Buffer and incubate for 20 minutes at room temperature.
8.Wash the plate 3 times with 1x Wash Buffer for 3 minutes each time.
9.Dispense 200 µl of Blocking Buffer and incubate for 1 hour at room temperature.
10. Wash 3 times with 200 µl of 1x Wash Buffer for 3 minutes each time.
11.Add 50 µl of Primary Antibody Mixture P to corresponding wells for SNAI1 (Phospho-Ser246) detection. Add 50 µl of Primary Antibody Mixture NP to the corresponding wells for total SNAI1 detection. Cover the plate with parafilm and incubate for 16 hours (overnight) at 4°C. If the target expression is known to be high, incubate for 2 hours at room temperature.
12.Wash 3 times with 200 µl of 1x Wash Buffer for 3 minutes each time.
13.Add 50 ul of Secondary Antibody Mixture to corresponding wells and incubate for 1.5 hours at room temperature in the dark.
14.Wash 3 times with 200 µl of 1x Wash Buffer for 3 minutes each time.
15.Read the plate(s) at Ex/Em: 651/667 (Dye 1) and 495/521 (Dye 2). Shield plates from direct light exposure.
16.Wash 3 times with 200 µl of 1x Wash Buffer for 5 minutes each time.

SNAI1 (Phospho-Ser246) - Protein Information

UniProt Protein Function:Snail1: a protein of the C2H2-type zinc-finger family that regulates transcription. Involved in embryonic mesoderm formation. Plays a role in the epithelial to mesenchymal transition (EMT). EMT is characterized by decreased levels of the epithelial markers E-cadherin and alpha- and beta-catenin, and increased cellular migration and expression of the mesenchymal markers fibronectin, vimentin, N-cadherin and smooth muscle alpha-actin.E Snail binds to 3 E-boxes of the E-cadherin gene promoter and represses its transcription. NF-kappaB binds and regulates the snail promoter and is critical for EMT, and inhibition of NF-kappaB activity lowered snail levels and morphologically reversed the EMT.
UniProt Protein Details:

Protein type:C2H2-type zinc finger protein; Transcription factor

Chromosomal Location of Human Ortholog: 20q13.2

Cellular Component: cytoplasm; nucleus

Molecular Function:kinase binding; protein binding

Biological Process: epithelial to mesenchymal transition; mesoderm formation; negative regulation of DNA damage response, signal transduction by p53 class mediator; negative regulation of transcription from RNA polymerase II promoter; osteoblast differentiation; positive regulation of cell migration; positive regulation of transcription, DNA-dependent

NCBI Summary:The Drosophila embryonic protein snail is a zinc finger transcriptional repressor which downregulates the expression of ectodermal genes within the mesoderm. The nuclear protein encoded by this gene is structurally similar to the Drosophila snail protein, and is also thought to be critical for mesoderm formation in the developing embryo. At least two variants of a similar processed pseudogene have been found on chromosome 2. [provided by RefSeq, Jul 2008]
UniProt Code:O95863
NCBI GenInfo Identifier:12644089
NCBI Gene ID:6615
NCBI Accession:O95863.2
UniProt Secondary Accession:O95863,Q9P113, Q9UBP7, Q9UHH7, B2R842,
UniProt Related Accession:O95863
Molecular Weight:29,083 Da
NCBI Full Name:Zinc finger protein SNAI1
NCBI Synonym Full Names:snail family transcriptional repressor 1
NCBI Official Symbol:SNAI1  
NCBI Official Synonym Symbols:SNA; SNAH; SNAIL; SLUGH2; SNAIL1; dJ710H13.1  
NCBI Protein Information:zinc finger protein SNAI1
UniProt Protein Name:Zinc finger protein SNAI1
UniProt Synonym Protein Names:Protein snail homolog 1; Protein sna
Protein Family:Protein snail
UniProt Gene Name:SNAI1  
UniProt Entry Name:SNAI1_HUMAN