Human FGF2/bFGF ELISA Kit (HUFI00388)

Product Name:	Human FGF2/bFGF ELISA Kit
Product Code:	HUFI00388
Size:	96 Assays
Alias:	FGF2, bFGF, FGF-2, FGF2AS, GFG1, HBGH-2, NUDT6, Prostatropin, Basic fibroblast growth factor, BFGF, FGFBprostatropin, fibroblast growth factor 2, basic, HBGF-2, heparin-binding growth factor 2, Fibroblast Growth Factor basic, FGF basic, B-FGF, FGFB, HBGF-2, prostatropin
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human FGF2 concentrations in serum plasma and other biological fluids.
Sensitivity:	7.5pg/ml
Range:	12.5-800pg/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Human FGF2 and the recovery rates were calculated by comparing the measured value to the expected amount of Human FGF2 in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	85-104	96
EDTA plasma(n=5)	94-105	99
UFH plasma(n=5)	94-105	99

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human FGF2 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample	1:2	1:4	1:8
serum(n=5)	88-104%	86-103%	85-104%
EDTA plasma(n=5)	83-100%	89-97%	82-100%
UFH plasma(n=5)	82-98%	84-99%	80-92%

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

P09038

UniProt Protein Function:	FGF2: Plays an important role in the regulation of cell survival, cell division, angiogenesis, cell differentiation and cell migration. Functions as potent mitogen in vitro. Monomer. Homodimer. Interacts with FGFR1, FGFR2, FGFR3 and FGFR4. Affinity between fibroblast growth factors (FGFs) and their receptors is increased by heparan sulfate glycosaminoglycans that function as coreceptors. Interacts with CSPG4, FGFBP1 and TEC. Found in a complex with FGFBP1, FGF1 and FGF2. Expressed in granulosa and cumulus cells. Expressed in hepatocellular carcinoma cells, but not in non- cancerous liver tissue. Belongs to the heparin-binding growth factors family. 4 isoforms of the human protein are produced by alternative initiation.
UniProt Protein Details:	Protein type:Activator; Motility/polarity/chemotaxis Chromosomal Location of Human Ortholog: 4q26 Cellular Component: extracellular space; extracellular region; nucleus Molecular Function:heparin binding; protein binding; ligand-dependent nuclear receptor transcription coactivator activity; growth factor activity; cytokine activity; chemoattractant activity; fibroblast growth factor receptor binding Biological Process: extracellular matrix organization and biogenesis; wound healing; nerve growth factor receptor signaling pathway; somatic stem cell maintenance; activation of MAPK activity; positive regulation of transcription, DNA-dependent; chemotaxis; signal transduction; hyaluronan catabolic process; growth factor dependent regulation of satellite cell proliferation; positive regulation of MAP kinase activity; positive chemotaxis; positive regulation of cell proliferation; embryonic morphogenesis; positive regulation of cardiac muscle cell proliferation; epidermal growth factor receptor signaling pathway; nervous system development; phosphoinositide-mediated signaling; fibroblast growth factor receptor signaling pathway; positive regulation of cell fate specification; positive regulation of blood vessel endothelial cell migration; positive regulation of phosphoinositide 3-kinase activity; negative regulation of blood vessel endothelial cell migration; regulation of angiogenesis; positive regulation of angiogenesis; organ morphogenesis; cell migration during sprouting angiogenesis; ureteric bud branching; release of sequestered calcium ion into cytosol; positive regulation of cell division; Ras protein signal transduction; insulin receptor signaling pathway; phosphatidylinositol biosynthetic process; innate immune response; positive regulation of transcription from RNA polymerase II promoter; positive regulation of endothelial cell proliferation; inositol phosphate biosynthetic process
NCBI Summary:	The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. This protein has been implicated in diverse biological processes, such as limb and nervous system development, wound healing, and tumor growth. The mRNA for this gene contains multiple polyadenylation sites, and is alternatively translated from non-AUG (CUG) and AUG initiation codons, resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect, whereas, the AUG-initiated form is mostly cytosolic and is responsible for the paracrine and autocrine effects of this FGF. [provided by RefSeq, Jul 2008]
UniProt Code:	P09038
NCBI GenInfo Identifier:	261260095
NCBI Gene ID:	2247
NCBI Accession:	P09038.3
UniProt Secondary Accession:	P09038,O00527, P78443, Q16443, Q5PY50, Q7KZ11, Q7KZ72 Q9UC54, Q9UCS5, Q9UCS6, A4LBB8,
UniProt Related Accession:	P09038
Molecular Weight:
NCBI Full Name:	Fibroblast growth factor 2
NCBI Synonym Full Names:	fibroblast growth factor 2 (basic)
NCBI Official Symbol:	FGF2
NCBI Official Synonym Symbols:	BFGF; FGFB; FGF-2; HBGF-2
NCBI Protein Information:	fibroblast growth factor 2; prostatropin; heparin-binding growth factor 2; basic fibroblast growth factor bFGF
UniProt Protein Name:	Fibroblast growth factor 2
UniProt Synonym Protein Names:	Basic fibroblast growth factor; bFGF; Heparin-binding growth factor 2; HBGF-2
Protein Family:	Fibroblast growth factor
UniProt Gene Name:	FGF2
UniProt Entry Name:	FGF2_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 Âµl 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 Âµl 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.