Human CD117/c-kit Quantikine ELISA Kit

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DSCR00
Control Products Available
Human CD117/c-kit ELISA Serum/Plasma Standard Curve
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Human CD117/c-kit Quantikine ELISA Kit Summary

Assay Type
Solid Phase Sandwich ELISA
Format
96-well strip plate
Assay Length
4.5 hours
Sample Type & Volume Required Per Well
Cell Culture Supernates (100 uL), Serum (100 uL), EDTA Plasma (100 uL), Heparin Plasma (100 uL)
Sensitivity
0.339 ng/mL
Assay Range
1.6 - 50 ng/mL (Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma)
Specificity
Natural and recombinant human SCF sR
Cross-reactivity
< 0.5% cross-reactivity observed with available related molecules.Cross-species reactivity not tested.
Interference
No significant interference observed with available related molecules.

Product Summary

The Quantikine Human SCF sR Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human SCF sR in cell culture supernates, serum, and plasma. It contains Sf 21-expressed recombinant human SCF sR and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human SCF sR showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring human SCF sR.

Precision

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision

Cell Culture Supernates

Intra-Assay Precision Inter-Assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 40 40 40
Mean 5.68 13.8 26.4 5.32 13.6 26.9
Standard Deviation 0.228 0.39 0.707 0.481 0.509 1.21
CV% 4 2.8 2.7 9 3.7 4.5

Serum, EDTA Plasma, Heparin Plasma

Intra-Assay Precision Inter-Assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 40 40 40
Mean 4.69 14.1 25.7 5.9 15.1 28.7
Standard Deviation 0.298 0.359 0.562 0.555 0.688 1.76
CV% 6.4 2.5 2.2 9.4 4.6 6.1

Recovery

The recovery of SCF sR spiked to levels throughout the range of the assay in various matrices was evaluated.

Sample Type Average % Recovery Range %
Cell Culture Media (n=4) 103 97-110
EDTA Plasma (n=4) 91 84-106
Heparin Plasma (n=4) 92 87-102
Serum (n=4) 93 86-115

Linearity

To assess the linearity of the assay, samples containing and/or spiked with high concentrations of SCF sR were serially diluted with the appropriate Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Human CD117/c-kit ELISA Linearity

Data Examples

Human CD117/c-kit ELISA Serum/Plasma Standard Curve

Human CD117/c-kit ELISA Cell Culture Supernate Standard Curve

Product Datasheets

Preparation and Storage

Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: CD117/c-kit

CD117, also known as c-kit and SCF R, is the cellular receptor for Stem Cell Factor (SCF), also named c-kit ligand, mast cell growth factor, and steel factor. This receptor-ligand system plays essential roles in germ cell development, melanogenesis, hematopoiesis, and oncogenesis. CD117 is expressed on lymphoid, myeloid, erythroid, and megakaryocyte progenitors, NK cells, germ cells, melanocytes, glial cells, vascular smooth muscle cells, placenta, and epithelial cells. Altered levels and mutations in CD117 are associated with several types of cancer including lung, breast, gastrointestinal stromal, and germ cell tumors.

Long Name:
Stem Cell Factor Receptor
Entrez Gene IDs:
3815 (Human); 16590 (Mouse); 64030 (Rat)
Alternate Names:
CD117 antigen; CD117; ckit; c-kit; EC 2.7.10; EC 2.7.10.1; KIT; PBT; piebald trait; Proto-oncogene c-Kit; proto-oncogene tyrosine-protein kinase Kit; SCF R; SCFR; SCFRmast/stem cell growth factor receptor; soluble KIT variant 1; Tyrosine-protein kinase Kit; v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog; v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene-like protein
⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Assay Procedure

Refer to the product for complete assay procedure.

Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
  1.   Prepare all reagents, standard dilutions, and samples as directed in the product insert.
  2.   Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

  3. 100 µL Assay Diluent
  4.   Add 100 µL of Assay Diluent to each well.

  5. 100 µL Standard, Control, or Sample
  6.   Add 100 µL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours.
  7.   Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.

  8. 200 µL Conjugate
  9.   Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.
  10.   Aspirate and wash 4 times.

  11. 200 µL Substrate Solution
  12.   Add 200 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes. PROTECT FROM LIGHT.

  13. 50 µL Stop Solution
  14.   Add 50 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.

Citations for Human CD117/c-kit Quantikine ELISA Kit

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

6 Citations: Showing 1 - 6
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  1. Analysis of plasma cytokines and angiogenic factors in patients with pretreated urothelial cancer receiving Pazopanib: the role of circulating interleukin-8 to enhance the prognostic accuracy.
    Authors: Necchi A, Pennati M, Zaffaroni N, Landoni E, Giannatempo P, Raggi D, Schwartz L, Morosi C, Crippa F, Fare E, Nicolai N, Lanocita R, Sava T, Sacco C, Messina C, Ortega C, De Braud F, Salvioni R, Daidone M, Gianni A, Mariani L
    Br J Cancer, 2014;110(1):26-33.
    Species: Human
    Sample Types: Plasma
  2. Angiogenic and vasculogenic factors in the vitreous from patients with proliferative diabetic retinopathy.
    Authors: Abu El-Asrar, Ahmed M, Nawaz, Mohd Imt, Kangave, Dustan, Mairaj Siddiquei, Mohammed, Geboes, Karel
    J Diabetes Res, 2013;0(0):539658.
    Species: Human
    Sample Types: Vitreous Humor
  3. Plasma biomarkers as predictors of outcome in patients with advanced hepatocellular carcinoma.
    Authors: Llovet JM, Pena CE, Lathia CD, Shan M, Meinhardt G, Bruix J, Pallota MG, Zarba JJ, Boyer M, Riordan S, Strickland A, Tebbutt N, Thomson B, Borbath I, De Greve J, Van Laethem J-, Van Steenbergen W, Van Vlierberghe H, Barrios C, Cosme de Oliveira A, Kotzev I, Takov D, Tchernev K, Burak K, Ma M, Metrakos P, Olweny C, Sherman M, Gamargo Garate C, Martinez-Castillo J, Beaugrand M, Bennouna J, Blanc J-, Bronowicki J-, Degos F, Dominguez S, Grange J-, Hillon P, Raoul J-, Seitz J-, Blum H, Buggisch P, Caspary W, Dollinger M, Gerken G, Goke B, Gregor M, Greten T, Haussinger D, Hilgard P, Scherübl J, Scheulen M, Schmid R, Spengler U, Wiest R, Zeuzem S, Arvanitakis C, Germanidis G, Katsos I, Figer A, Stemmer S, Amadori D, Bolondi L, Cognetti F, Craxi A, Farinati F, Gridelli C, Martoni A, Mazzaferro V, Porta C, Ricci S, Sangiovanni A, Santoro A, Trevisani F, Cisnero Garza LE, Gane E, O'Donnell A, Leon J, Lozano A, Jassem J, Rydzewska G, Szawlowski A, Tomczak P, Badulescu F, Miron L, Kubyshkin V, Bruix J, Forner A, Bustamante Schneider J, Diago M, Montero Alvarez JL, Pascual S, Ruíz del Arbol L, Sangro B, Solá R, Tabernero J, Muellhaupt B, Roth A, Jeffry Evans TR, Falk S, Meyer T, Reeves H, Ross P, Befeler A, Boyer T, Britten C, Byrne T, Garcia-Tsao G, Gold P, Goldenberg A, Heuman D, Kennedy P, Koch A, Llovet JM, Marrero J, Schilsky M, Schwartz J, Schwartz M
    Clin. Cancer Res., 2012;18(8):2290-300.
    Species: Human
    Sample Types: Plasma
  4. Efficacy, safety, and potential biomarkers of sunitinib monotherapy in advanced hepatocellular carcinoma: a phase II study.
    Authors: Zhu AX, Sahani DV, Duda DG, di Tomaso E, Ancukiewicz M, Catalano OA, Sindhwani V, Blaszkowsky LS, Yoon SS, Lahdenranta J, Bhargava P, Meyerhardt J, Clark JW, Kwak EL, Hezel AF, Miksad R, Abrams TA, Enzinger PC, Fuchs CS, Ryan DP, Jain RK
    J. Clin. Oncol., 2009;27(18):3027-35.
    Species: Human
    Sample Types: Plasma
  5. Endothelial progenitor cell levels in obese men with the metabolic syndrome and the effect of simvastatin monotherapy vs. simvastatin/ezetimibe combination therapy.
    Authors: Westerweel PE, Visseren FL, Hajer GR, Olijhoek JK, Hoefer IE, de Bree P, Rafii S, Doevendans PA, Verhaar MC
    Eur. Heart J., 2008;29(22):2808-17.
    Species: Human
    Sample Types: Serum
  6. Phase II trial of sunitinib in patients with metastatic colorectal cancer after failure of standard therapy.
    Authors: Saltz LB, Rosen LS, Marshall JL, Belt RJ, Hurwitz HI, Eckhardt SG, Bergsland EK, Haller DG, Lockhart AC, Rocha Lima CM, Huang X, DePrimo SE, Chow-Maneval E, Chao RC, Lenz HJ
    J. Clin. Oncol., 2007;25(30):4793-9.
    Species: Human
    Sample Types: Plasma

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