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C/EBP-epsilon Colorimetric Cell-Based ELISA Kit

SKU:
CBCAB00552
Product Type:
ELISA Kit
ELISA Type:
Cell Based
Research Area:
Epigenetics and Nuclear Signaling
Reactivity:
Human
Detection Method:
Colorimetric
€599
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Description

system_update_altDatasheetMSDS
Product Name:C/EBP-epsilon Colorimetric Cell-Based ELISA
Product Code:CBCAB00552
ELISA Type:Cell-Based
Target:C/EBP-epsilon
Reactivity:Human
Dynamic Range:> 5000 Cells
Detection Method:Colorimetric 450 nmStorage/Stability:4°C/6 Months
Format:96-Well Microplate

The C/EBP-epsilon Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect C/EBP-epsilon protein expression profile in cells. The kit can be used for measuring the relative amounts of C/EBP-epsilon in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on C/EBP-epsilon.

Qualitative determination of C/EBP-epsilon concentration is achieved by an indirect ELISA format. In essence, C/EBP-epsilon is captured by C/EBP-epsilon-specific primary antibodies while the HRP-conjugated secondary antibodies bind the Fc region of the primary antibody. Through this binding, the HRP enzyme conjugated to the secondary antibody can catalyze a colorimetric reaction upon substrate addition. 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 absorbance values.
2. Following the colorimetric measurement of HRP activity via substrate addition, the Crystal Violet whole-cell staining method may be used to determine cell density. After staining, the results can be analysed by normalizing the absorbance values to cell amounts, by which the plating difference can be adjusted.
Database Information:Gene ID: 1053, UniProt ID: Q15744, OMIM: 600749, Unigene: Hs.558308
Gene Symbol:CEBPE
Sub Type:None
UniProt Protein Function:C/EBP-epsilon: C/EBP are DNA-binding proteins that recognize two different motifs: the CCAAT homology common to many promoters and the enhanced core homology common to many enhancers. Belongs to the bZIP family. C/EBP subfamily.
UniProt Protein Details:

Protein type:Transcription factor; DNA-binding; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 14q11.2

Cellular Component: nucleoplasm

Biological Process: defense response; positive regulation of transcription from RNA polymerase II promoter

Disease: Specific Granule Deficiency

NCBI Summary:The protein encoded by this gene is a bZIP transcription factor which can bind as a homodimer to certain DNA regulatory regions. It can also form heterodimers with the related protein CEBP-delta. The encoded protein may be essential for terminal differentiation and functional maturation of committed granulocyte progenitor cells. Mutations in this gene have been associated with Specific Granule Deficiency, a rare congenital disorder. Multiple variants of this gene have been described, but the full-length nature of only one has been determined. [provided by RefSeq, Jul 2008]
UniProt Code:Q15744
NCBI GenInfo Identifier:62512175
NCBI Gene ID:1053
NCBI Accession:Q15744.2
UniProt Secondary Accession:Q15744,Q15745, Q8IYI2, Q99803,
UniProt Related Accession:Q15744
Molecular Weight:30,603 Da
NCBI Full Name:CCAAT/enhancer-binding protein epsilon
NCBI Synonym Full Names:CCAAT/enhancer binding protein epsilon
NCBI Official Symbol:CEBPE  
NCBI Official Synonym Symbols:CRP1; C/EBP-epsilon  
NCBI Protein Information:CCAAT/enhancer-binding protein epsilon
UniProt Protein Name:CCAAT/enhancer-binding protein epsilon
Protein Family:CCAAT/enhancer-binding protein
UniProt Gene Name:CEBPE  
UniProt Entry Name:CEBPE_HUMAN
ComponentQuantity
96-Well Cell Culture Clear-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 Antibody60 µL
HRP-Conjugated Anti-Rabbit IgG Antibody12 mL
HRP-Conjugated Anti-Mouse IgG Antibody12 mL
SDS Solution12 mL
Stop Solution24 mL
Ready-to-Use Substrate12 mL
Crystal Violet Solution12 mL
Adhesive Plate Seals2 seals

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

  • Microplate reader able to measure absorbance at 450 nm and/or 595 nm for Crystal Violet Cell Staining (Optional)
  • Micropipettes with capability of measuring volumes ranging from 1 µL to 1 ml
  • 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)
  • Deionized or sterile water

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

StepProcedure
1.Seed 200 µL of 20,000 adherent cells in culture medium in each well of a 96-well plate. The plates included in the kit are sterile and treated for cell culture. 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 five minutes each time with gentle shaking on the orbital shaker. 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 5 minutes each time.
9.Add 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 5 minutes each time.
11.Add 50 µL of 1x primary antibodies (Anti-C/EBP-epsilon Antibody and/or Anti-GAPDH Antibody) to the corresponding wells, cover 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 5 minutes each time.
13.Add 50 µL of 1x secondary antibodies (HRP-Conjugated AntiRabbit IgG Antibody or HRP-Conjugated Anti-Mouse IgG Antibody) to corresponding wells and incubate for 1.5 hours at room temperature.
14.Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time.
15.Add 50 µL of Ready-to-Use Substrate to each well and incubate for 30 minutes at room temperature in the dark.
16.Add 50 µL of Stop Solution to each well and read OD at 450 nm immediately using the microplate reader.

(Additional Crystal Violet staining may be performed if desired – details of this may be found in the kit technical manual.)

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