Human IL-6R alpha DuoSet ELISA

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Human IL-6 R alpha ELISA Standard Curve
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Product Details
Citations (18)
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Human IL-6R alpha DuoSet ELISA Summary

Assay Type
Solid Phase Sandwich ELISA
96-well strip plate
Sample Volume Required
100 µL
Assay Range
15.6 - 1,000 pg/mL
Sufficient Materials
For fifteen 96-well plates*
Please see the product datasheet

* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.

This DuoSet ELISA Development kit contains the basic components required for the development of sandwich ELISAs to measure natural and recombinant human IL-6 sR. The suggested diluent is suitable for the analysis of most cell culture supernate samples. Diluents for complex matrices, such as serum and plasma, should be evaluated prior to use in this DuoSet.


Product Features

  • Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time
  • Development protocols are provided to guide further assay optimization
  • Assay can be customized to your specific needs
  • Economical alternative to complete kits

Kit Content

  • Capture Antibody
  • Detection Antibody
  • Recombinant Standard
  • Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

DuoSet Ancillary Reagent Kit 2 (5 plates): (Catalog # DY008) containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and Reagent Diluent Concentrate 2.

The components listed above may be purchased separately:

PBS: (Catalog # DY006), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na2HPO4, 1.5 mM KH2PO4, pH 7.2 - 7.4, 0.2 µm filtered

Wash Buffer: (Catalog # WA126), or 0.05% Tween® 20 in PBS, pH 7.2-7.4

Reagent Diluent: (Catalog # DY995), or 1% BSA in PBS, pH 7.2-7.4, 0.2 µm filtered

Substrate Solution: 1:1 mixture of Color Reagent A (H2O2) and Color Reagent B (Tetramethylbenzidine) (Catalog # DY999)

Stop Solution: 2 N H2SO4 (Catalog # DY994)

Microplates: R&D Systems (Catalog # DY990)

Plate Sealers: ELISA Plate Sealers (Catalog # DY992)

Scientific Data

Human IL-6 R alpha ELISA Standard Curve

Product Datasheets

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Preparation and Storage

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

Background: IL-6R alpha

IL-6 R alpha is a transmembrane subunit of the receptor for Interleukin-6. It associates with gp130 which is a shared component of the receptors for CLC, CNTF, CT-1, IL-11, IL-27, LIF, and OSM. Soluble forms of IL-6 R alpha are generated by both alternative splicing and proteolytic cleavage. In a mechanism known as trans-signaling, complexes of soluble IL-6 and IL-6 R alpha elicit responses from gp130-expressing cells that lack cell surface IL-6 R alpha. IL-6 plays important roles in the acute phase reaction, inflammation, hematopoiesis, bone metabolism, and cancer progression. IL-6, along with TNF-alpha and IL-1, drives the acute inflammatory response and the transition from acute inflammation to either acquired immunity or chronic inflammatory disease. When dysregulated, it contributes to chronic inflammation in obesity, insulin resistance, inflammatory bowel disease, arthritis, sepsis, and atherosclerosis.

Long Name:
Interleukin 6 Receptor alpha
Entrez Gene IDs:
3570 (Human); 16194 (Mouse); 24499 (Rat); 102116430 (Cynomolgus Monkey)
Alternate Names:
CD126; gp80; IL-6 R alpha; IL6Q; IL6R alpha; IL-6R alpha; IL6R; IL-6R-1; IL6RA; IL-6Ra; IL6RQ; interleukin 6 receptor

Assay Procedure


Plate Preparation

  1. Dilute the Capture Antibody to the working concentration in PBS without carrier protein. Immediately coat a 96-well microplate with 100 μL per well of the diluted Capture Antibody. Seal the plate and incubate overnight at room temperature.
  2. Aspirate each well and wash with Wash Buffer, repeating the process two times for a total of three washes. Wash by filling each well with Wash Buffer (400 μL) using a squirt bottle, manifold dispenser, or autowasher. Complete removal of liquid at each step is essential for good performance. After the last wash, remove any remaining Wash Buffer by aspirating or by inverting the plate and blotting it against clean paper towels.
  3. Block plates by adding 300 μL Reagent Diluent to each well. Incubate at room temperature for a minimum of 1 hour.
  4. Repeat the aspiration/wash as in step 2. The plates are now ready for sample addition.

Assay Procedure

  1. Add 100 μL of sample or standards in Reagent Diluent, or an appropriate diluent, per well. Cover with an adhesive strip and incubate 2 hours at room temperature.
  2. Repeat the aspiration/wash as in step 2 of Plate Preparation.
  3. Add 100 μL of the Detection Antibody, diluted in Reagent Diluent, to each well. Cover with a new adhesive strip and incubate 2 hours at room temperature.
  4. Repeat the aspiration/wash as in step 2 of Plate Preparation.
  5. Add 100 μL of the working dilution of Streptavidin-HRP to each well. Cover the plate and incubate for 20 minutes at room temperature. Avoid placing the plate in direct light.
  6. Repeat the aspiration/wash as in step 2.
  7. Add 100 μL of Substrate Solution to each well. Incubate for 20 minutes at room temperature. Avoid placing the plate in direct light.
  8. Add 50 μL of Stop Solution to each well. Gently tap the plate to ensure thorough mixing.
  9. Determine the optical density of each well immediately, using a microplate reader set to 450 nm. If wavelength correction is available, set to 540 nm or 570 nm. If wavelength correction is not available, subtract readings at 540 nm or 570 nm from the readings at 450 nm. This subtraction will correct for optical imperfections in the plate. Readings made directly at 450 nm without correction may be higher and less accurate.


Citations for Human IL-6R alpha DuoSet ELISA

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.

18 Citations: Showing 1 - 10
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  1. SARS-CoV-2 infection results in immune responses in the respiratory tract and peripheral blood that suggest mechanisms of disease severity
    Authors: W Zhang, BY Chua, KJ Selva, L Kedzierski, TM Ashhurst, ER Haycroft, SK Shoffner-B, L Hensen, DF Boyd, F James, E Mouhtouris, JC Kwong, KYL Chua, G Drewett, A Copaescu, JE Dobson, LC Rowntree, JR Habel, LF Allen, HF Koay, JA Neil, MJ Gartner, CY Lee, P Andersson, SF Khan, L Blakeway, J Wisniewski, JH McMahon, EE Vine, AL Cunningham, J Audsley, I Thevarajan, T Seemann, NL Sherry, F Amanat, F Krammer, SL Londrigan, LM Wakim, NJC King, DI Godfrey, LK Mackay, PG Thomas, S Nicholson, KB Arnold, AW Chung, NE Holmes, OC Smibert, JA Trubiano, CL Gordon, THO Nguyen, K Kedzierska
    Nature Communications, 2022-05-19;13(1):2774.
    Species: Human
    Sample Types: Plasma
  2. Reduced Expression of PD-1 in Circulating CD4+ and CD8+ Tregs Is an Early Feature of RRMS
    Authors: M Machci?ska, M Kierasi?sk, M Michniowsk, M Maruszewsk, L Szewczak, R Rola, A Karli?ska, M Stear, K Donskow-?y
    International Journal of Molecular Sciences, 2022-03-16;23(6):.
    Species: Human
    Sample Types: Serum
  3. Immune responses in COVID-19 respiratory tract and blood reveal mechanisms of disease severity
    Authors: W Zhang, B Chua, K Selva, L Kedzierski, T Ashhurst, E Haycroft, S Shoffner, L Hensen, D Boyd, F James, E Mouhtouris, J Kwong, K Chua, G Drewett, A Copaescu, J Dobson, L Rowntree, J Habel, L Allen, HF Koay, J Neil, M Gartner, C Lee, P Andersson, T Seemann, N Sherry, F Amanat, F Krammer, S Londrigan, L Wakim, N King, D Godfrey, L Mackay, P Thomas, S Nicholson, K Arnold, A Chung, N Holmes, O Smibert, J Trubiano, C Gordon, T Nguyen, K Kedzierska
    Research square, 2021-08-26;0(0):.
    Species: Human
    Sample Types: Plasma
  4. Perturbation of the Actin Cytoskeleton in Human Hepatoma Cells Influences Interleukin-6 (IL-6) Signaling, but Not Soluble IL-6 Receptor Generation or NF-kappaB Activation
    Authors: E Georgieva, SL Leber, C Wex, C Garbers
    International Journal of Molecular Sciences, 2021-07-02;22(13):.
    Species: Human
    Sample Types: Cell Lysates
  5. Interleukin-6 controls recycling and degradation, but not internalization of its receptors
    Authors: CM Flynn, B Kespohl, T Daunke, Y Garbers, S Düsterhöft, S Rose-John, J Haybaeck, J Lokau, S Aparicio-S, C Garbers
    The Journal of Biological Chemistry, 2021-02-19;0(0):100434.
    Species: Human
    Sample Types: Cell Culture Supernates
  6. Cathepsin S provokes interleukin-6 (IL-6) trans-signaling through cleavage of the IL-6 receptor in vitro
    Authors: CM Flynn, Y Garbers, S Düsterhöft, R Wichert, J Lokau, CHK Lehmann, D Dudziak, B Schröder, C Becker-Pau, S Rose-John, S Aparicio-S, C Garbers
    Scientific Reports, 2020-12-10;10(1):21612.
    Species: Human
    Sample Types: Cell Culture Supernates
  7. Interleukin-6 trans-signaling is a candidate mechanism to drive progression of human DCCs during clinical latency
    Authors: M Werner-Kle, A Grujovic, C Irlbeck, M Obradovi?, M Hoffmann, H Koerkel-Qu, X Lu, S Treitschke, C Köstler, C Botteron, K Weidele, C Werno, B Polzer, S Kirsch, M Gužvi?, J Warfsmann, K Honarnejad, Z Czyz, G Feliciello, I Blochberge, S Grunewald, E Schneider, G Haunschild, N Patwary, S Guetter, S Huber, B Rack, N Harbeck, S Buchholz, P Rümmele, N Heine, S Rose-John, CA Klein
    Nat Commun, 2020-10-05;11(1):4977.
    Species: Human
    Sample Types: Cell Culture Supernates
  8. Trans IL-6 signaling does not appear to play a role in renal scarring after urinary tract infection
    Authors: S Gupta, GY Junquera, L Nicassio, B Becknell, CB Ching
    J Pediatr Urol, 2020-05-29;0(0):.
    Species: Human
    Sample Types: Urine
  9. Activation of Toll-like Receptor 2 (TLR2) induces Interleukin-6 trans-signaling
    Authors: CM Flynn, Y Garbers, J Lokau, D Wesch, DM Schulte, M Laudes, W Lieb, S Aparicio-S, C Garbers
    Sci Rep, 2019-05-13;9(1):7306.
    Species: Human
    Sample Types: Serum
  10. Therapeutic blockade of the interleukin-6 receptor (IL-6R) allows sIL-6R generation by proteolytic cleavage
    Authors: N Prenissl, J Lokau, S Rose-John, J Haybaeck, C Garbers
    Cytokine, 2018-12-14;114(0):1-5.
    Species: Human, Transgenic Mouse
    Sample Types: Cell Culture Supernates
  11. p63 is a key regulator of iRHOM2 signalling in the keratinocyte stress response
    Authors: P Arcidiacon, CM Webb, MA Brooke, H Zhou, PJ Delaney, KE Ng, DC Blaydon, A Tinker, DP Kelsell, A Chikh
    Nat Commun, 2018-03-09;9(1):1021.
    Species: Human
    Sample Types: Cell Culture Supernates
  12. The effect of smoking on DNA methylation of peripheral blood mononuclear cells from African American women.
    Authors: Dogan, Meeshant, Shields, Bridget, Cutrona, Carolyn, Gao, Long, Gibbons, Frederic, Simons, Ronald, Monick, Martha, Brody, Gene H, Tan, Kai, Beach, Steven R, Philibert, Robert A
    BMC Genomics, 2014-02-22;15(0):151.
    Species: Human
    Sample Types: Serum
  13. Anti-Tumour Effects of a Specific Anti-ADAM17 Antibody in an Ovarian Cancer Model In Vivo.
    Authors: Richards FM, Tape CJ, Jodrell DI, Murphy G
    PLoS ONE, 2012-07-11;7(7):e40597.
    Species: Human
    Sample Types: Tissue Homogenates
  14. PI3K/p110{delta} is a novel therapeutic target in multiple myeloma.
    Authors: Ikeda H, Hideshima T, Fulciniti M
    Blood, 2010-05-26;116(9):1460-8.
    Species: Human
    Sample Types: Serum
  15. Altered interleukin-6 receptor, IL-6R and gp130, production and expression and decreased SOCS-3 expression in placentas from women with pre-eclampsia.
    Authors: Zhao S, Gu Y, Dong Q, Fan R, Wang Y
    Placenta, 2008-11-05;29(12):1024-8.
    Species: Human
    Sample Types: Cell Culture Supernates
  16. Epigallocatechin-3-gallate inhibits IL-6 synthesis and suppresses transsignaling by enhancing soluble gp130 production.
    Authors: Ahmed S, Marotte H, Kwan K, Ruth JH, Campbell PL, Rabquer BJ, Pakozdi A, Koch AE
    Proc. Natl. Acad. Sci. U.S.A., 2008-09-16;105(38):14692-7.
    Species: Human
    Sample Types: Cell Culture Supernates
  17. Cutting edge: soluble IL-6R is produced by IL-6R ectodomain shedding in activated CD4 T cells.
    Authors: Briso EM, Dienz O, Rincon M
    J. Immunol., 2008-06-01;180(11):7102-6.
    Species: Human
    Sample Types: Cell Culture Supernates
  18. p38 mitogen-activated protein kinase inhibitor LY2228820 enhances bortezomib-induced cytotoxicity and inhibits osteoclastogenesis in multiple myeloma; therapeutic implications.
    Authors: Ishitsuka K, Hideshima T, Neri P, Vallet S, Shiraishi N, Okawa Y, Shen Z, Raje N, Kiziltepe T, Ocio EM, Chauhan D, Tassone P, Munshi N, Campbell RM, Dios AD, Shih C, Starling JJ, Tamura K, Anderson KC
    Br. J. Haematol., 2008-04-07;141(5):598-606.
    Species: Mouse
    Sample Types: Serum


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Human IL-6R alpha DuoSet ELISA
By Anonymous on 01/07/2020
Sample Tested: Cell culture supernatant,Serum and Plasma

Human IL-6R alpha DuoSet ELISA
By Anonymous on 10/04/2019
Sample Tested: Serum and Plasma

Used this kit for quantifying human IL-6R in serum/plasma samples. The very good kit works very well and detects IL-6R efficiently. Easy to use protocol.