Human HSP70 ELISA Kit (HUFI02563)

Product Name:	Human HSP70 ELISA Kit
Product Code:	HUFI02563
Size:	96 Assays
Alias:	DAAP-21F2.7, FLJ54328, HSP70-1B, HSP70-2, HSPA1A, heat shock 70kD protein 1B
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human HSP-70 concentrations in serum plasma and other biological fluids.
Sensitivity:	18.75pg/ml
Range:	31.25-2000pg/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Human HSP-70 and the recovery rates were calculated by comparing the measured value to the expected amount of Human HSP-70 in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	90-105	95
EDTA plasma(n=5)	86-103	95
UFH plasma(n=5)	87-100	94

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human HSP-70 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)	85-105%	87-99%	85-101%
EDTA plasma(n=5)	84-98%	88-98%	87-99%
UFH plasma(n=5)	88-97%	86-95%	80-97%

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

P0DMV8

UniProt Protein Function:	HSP70: a critical chaperone protein that has a high affinity for unfolded polypeptide chains. It binds extended peptide segments with a net hydrophobic character exposed by polypeptides during translation and membrane translocation, or following stress-induced damage. In cooperation with other chaperones, hsp70 stabilizes preexistent proteins against aggregation and mediates the folding of newly translated polypeptides in the cytosol as well as within organelles. Mitochondrial HSP70 is crucial to the import process: mutant forms of HSP70 fail to import precursor proteins. Is anti-apoptotic in sympathetic neurones and mediates this effect primarily by suppressing c-Jun transcriptional signalling. Interacts with tau protein and mediates proper folding of tau. Can promote the degradation of tau protein. Triptolide, a potential therapeutic agent for progression/metastasis of pancreatic cancer, causes pancreatic cancer cell death by induction of apoptosis, an effect mediated by the inhibition of HSP70.
UniProt Protein Details:	Protein type:Chaperone; Heat shock protein; Motility/polarity/chemotaxis Chromosomal Location of Human Ortholog: 6p21.33 Cellular Component: centriole; centrosome; cytoplasm; cytosol; endoplasmic reticulum; extracellular region; focal adhesion; inclusion body; mitochondrion; nuclear speck; nucleoplasm; nucleus; perinuclear region of cytoplasm; ribonucleoprotein complex; ubiquitin ligase complex; vesicle Molecular Function:ATP binding; ATPase activity; ATPase activity, coupled; cadherin binding; denatured protein binding; enzyme binding; G-protein-coupled receptor binding; heat shock protein binding; histone deacetylase binding; protein binding; protein N-terminus binding; receptor binding; RNA binding; ubiquitin protein ligase binding; unfolded protein binding Biological Process: activation of NF-kappaB transcription factor; ATP metabolic process; chaperone-mediated protein complex assembly; mRNA catabolic process; negative regulation of apoptosis; negative regulation of cell growth; negative regulation of cell proliferation; negative regulation of protein ubiquitination; negative regulation of transforming growth factor beta receptor signaling pathway; neutrophil degranulation; positive regulation of interleukin-8 production; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; protein refolding; protein stabilization; regulation of mRNA stability; regulation of protein ubiquitination; response to unfolded protein
NCBI Summary:	This intronless gene encodes a 70kDa heat shock protein which is a member of the heat shock protein 70 family. In conjuction with other heat shock proteins, this protein stabilizes existing proteins against aggregation and mediates the folding of newly translated proteins in the cytosol and in organelles. It is also involved in the ubiquitin-proteasome pathway through interaction with the AU-rich element RNA-binding protein 1. The gene is located in the major histocompatibility complex class III region, in a cluster with two closely related genes which encode similar proteins. [provided by RefSeq, Jul 2008]
UniProt Code:	P0DMV8
NCBI GenInfo Identifier:	825168577
NCBI Gene ID:	3303
NCBI Accession:	P0DMV8.1
UniProt Secondary Accession:	P0DMV8,P08107, P19790, Q5JQI4, Q5SP17, Q9UQL9, Q9UQM0 B4E3B6,
UniProt Related Accession:	P0DMV8
Molecular Weight:	70kDa
NCBI Full Name:	Heat shock 70 kDa protein 1A
NCBI Synonym Full Names:	heat shock protein family A (Hsp70) member 1A
NCBI Official Symbol:	HSPA1A
NCBI Official Synonym Symbols:	HSP72; HSPA1; HSP70I; HSP70-1; HSP70.1; HSP70-1A; HEL-S-103
NCBI Protein Information:	heat shock 70 kDa protein 1A
UniProt Protein Name:	Heat shock 70 kDa protein 1A
UniProt Synonym Protein Names:	Heat shock 70 kDa protein 1; HSP70-1
Protein Family:	Heat shock 70 kDa protein
UniProt Gene Name:	HSPA1A

*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 µl 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 µl 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.