PDGFRalpha Colorimetric Cell-Based ELISA Kit (CBCAB00806)

Product Name:	PDGFRalpha Colorimetric Cell-Based ELISA Kit
Product Code:	CBCAB00806
ELISA Type:	Cell-Based
Target:	PDGFRalpha
Reactivity:	Human, Mouse
Dynamic Range:	> 5000 Cells
Detection Method:	Colorimetric 450 nmStorage/Stability:4°C/6 Months
Format:	96-Well Microplate

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

Qualitative determination of PDGFRalpha concentration is achieved by an indirect ELISA format. In essence, PDGFRalpha is captured by PDGFRalpha-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: 5175, UniProt ID: P16234, OMIM: 173445, Unigene: Hs.514412
Gene Symbol:	PDGFRA
Sub Type:	None

UniProt Protein Function:	PDGFRA: a receptor tyrosine kinase of the PDGFR family that binds members of the platelet-derived growth factor family. The identity of the growth factor bound determines whether the functional receptor is a homodimer or a heterodimer, composed of both PDGFR-alpha and -beta. Ligand binding induces receptor dimerization and autophosphorylation. Particularly important for kidney development since mice heterozygous for the receptor exhibit defective kidney phenotypes. Chromosomal rearrangments activate PDGFRalpha by fusion to BCR, causing atypical chronic myelogenous leukemia (CML), and to FIP1L1, causing idiopathic hypereosinophilic syndrome. Activating point mutations cause a minority of gastrointestinal stromal tumors (GIST). Promoter polymorphisms linked to neural tube defects including spina bifida, verified by mouse mutant model. Inhibitors: Gleevec, Sutent. OMIM: Two alternatively-spliced isoforms have been described.
UniProt Protein Details:	Protein type:Protein kinase, tyrosine (receptor); Oncoprotein; Kinase, protein; Membrane protein, integral; Protein kinase, TK; EC 2.7.10.1; TK group; PDGFR family Chromosomal Location of Human Ortholog: 4q12 Cellular Component: microvillus; membrane; integral to plasma membrane; cytoplasm; plasma membrane; nucleus; intrinsic to plasma membrane; external side of plasma membrane Molecular Function:vascular endothelial growth factor receptor activity; protein binding; protein homodimerization activity; platelet-derived growth factor binding; platelet-derived growth factor receptor binding; platelet-derived growth factor alpha-receptor activity; transmembrane receptor protein tyrosine kinase activity; ATP binding Biological Process: estrogen metabolic process; extracellular matrix organization and biogenesis; peptidyl-tyrosine phosphorylation; regulation of chemotaxis; wound healing; nerve growth factor receptor signaling pathway; viral reproduction; protein amino acid autophosphorylation; platelet-derived growth factor receptor signaling pathway; cardiac myofibril assembly; palate development; elevation of cytosolic calcium ion concentration; positive regulation of fibroblast proliferation; Leydig cell differentiation; embryonic digestive tract morphogenesis; luteinization; positive regulation of cell proliferation; male genitalia development; epidermal growth factor receptor signaling pathway; phosphoinositide-mediated signaling; fibroblast growth factor receptor signaling pathway; in utero embryonic development; adrenal gland development; positive regulation of phosphoinositide 3-kinase activity; embryonic cranial skeleton morphogenesis; odontogenesis of dentine-containing teeth; embryonic skeletal morphogenesis; positive regulation of phosphoinositide 3-kinase cascade; cell activation; innate immune response; hemopoietic progenitor cell differentiation; positive regulation of DNA replication; lung development; positive regulation of cell migration Disease: Gastrointestinal Stromal Tumor; Hypereosinophilic Syndrome, Idiopathic
NCBI Summary:	This gene encodes a cell surface tyrosine kinase receptor for members of the platelet-derived growth factor family. These growth factors are mitogens for cells of mesenchymal origin. The identity of the growth factor bound to a receptor monomer determines whether the functional receptor is a homodimer or a heterodimer, composed of both platelet-derived growth factor receptor alpha and beta polypeptides. Studies suggest that this gene plays a role in organ development, wound healing, and tumor progression. Mutations in this gene have been associated with idiopathic hypereosinophilic syndrome, somatic and familial gastrointestinal stromal tumors, and a variety of other cancers. [provided by RefSeq, Mar 2012]
UniProt Code:	P16234
NCBI GenInfo Identifier:	129892
NCBI Gene ID:	5156
NCBI Accession:	P16234.1
UniProt Secondary Accession:	P16234,Q6P4H5, Q96KZ7, Q9UD28, B2RE69, E9PBH0,
UniProt Related Accession:	P16234
Molecular Weight:	1089
NCBI Full Name:	Platelet-derived growth factor receptor alpha
NCBI Synonym Full Names:	platelet-derived growth factor receptor, alpha polypeptide
NCBI Official Symbol:	PDGFRA
NCBI Official Synonym Symbols:	CD140A; PDGFR2; PDGFR-2; RHEPDGFRA
NCBI Protein Information:	platelet-derived growth factor receptor alpha; PDGF-R-alpha; CD140a antigen; PDGFRA/BCR fusion; CD140 antigen-like family member A; platelet-derived growth factor receptor 2; alpha-type platelet-derived growth factor receptor; rearranged-in-hypereosinophilia-platelet derived growth factor receptor alpha fusion protein
UniProt Protein Name:	Platelet-derived growth factor receptor alpha
UniProt Synonym Protein Names:	Alpha platelet-derived growth factor receptor; Alpha-type platelet-derived growth factor receptor; CD140 antigen-like family member A; CD140a antigen; Platelet-derived growth factor alpha receptor; Platelet-derived growth factor receptor 2; PDGFR-2; CD_antigen: CD140a
Protein Family:	Platelet-derived growth factor receptor
UniProt Gene Name:	PDGFRA
UniProt Entry Name:	PGFRA_HUMAN

Component	Quantity
96-Well Cell Culture Clear-Bottom Microplate	2 plates
10X TBS	24 mL
Quenching Buffer	24 mL
Blocking Buffer	50 mL
15X Wash Buffer	50 mL
Primary Antibody Diluent	12 mL
100x Anti-Phospho Target Antibody	60 µL
100x Anti-Target Antibody	60 µL
Anti-GAPDH Antibody	60 µL
HRP-Conjugated Anti-Rabbit IgG Antibody	12 mL
HRP-Conjugated Anti-Mouse IgG Antibody	12 mL
SDS Solution	12 mL
Stop Solution	24 mL
Ready-to-Use Substrate	12 mL
Crystal Violet Solution	12 mL
Adhesive Plate Seals	2 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.

Step	Procedure
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-PDGFRalpha 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.)