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19632
PathScan® Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit
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ELISA Kit

PathScan® Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit #19632

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PathScan® Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit: Image 1
Figure 1. Treatment of LNCaP cells with dihydrotestosterone (DHT) stimulates phosphorylation of androgen receptor at Ser258. The relationship between lysate protein concentration from LNCaP cells that were untreated, DHT-treated, and DHT-treated plus λ phosphatase and the absorbance at 450 nm using the PathScan® RP Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit #19632 is shown. LNCaP cells were grown in phenol red free media with 5% charcoal stripped FBS for 3 d and then left untreated, treated with DHT (5 nM) for 6 hr, or treated with DHT (5 nM) for 6 hr followed by the cell extract being treated with λ phosphatase.
To Purchase # 19632
製品# サイズ 数量 価格 在庫
19632C
1 Kit  (96 assays)

Important Ordering Details

Custom Ordering Details:

When ordering five or more kits, please contact us for processing time and pricing.

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Supporting Data

REACTIVITY H

Application Key:

  • WB-Western Blot
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • C&R-CUT&RUN
  • C&T-CUT&Tag
  • DB-Dot Blot
  • eCLIP-eCLIP
  • IF-Immunofluorescence
  • F-Flow Cytometry

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • Vir-Virus
  • Mi-Mink
  • C-Chicken
  • Dm-D. melanogaster
  • X-Xenopus
  • Z-Zebrafish
  • B-Bovine
  • Dg-Dog
  • Pg-Pig
  • Sc-S. cerevisiae
  • Ce-C. elegans
  • Hr-Horse
  • GP-Guinea Pig
  • Rab-Rabbit
  • All-All Species Expected
Product Includes Volume Solution Color
Androgen Receptor Rabbit mAb Coated Microwells 96 tests
Phospho-Androgen Receptor (Ser258) Rabbit Detection mAb 1 ea Red (Lyophilized)
HRP Diluent 5.5 ml Red
TMB Substrate 7004 11 ml
STOP Solution 7002 11 ml
Sealing Tape 2 ea
ELISA Wash Buffer (20X) 9801 25 ml
Cell Lysis Buffer (10X) 9803 15 ml

Product Description

The PathScan® Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of androgen receptor protein phosphorylated at Ser258. Incubation of cell lysates and detection antibody on the coated microwell plate forms a sandwich with phospho-androgen receptor (Ser258) in a single step. The plate is then extensively washed and TMB reagent is added for signal development. The magnitude of absorbance for the developed color is proportional to the quantity of phospho-androgen receptor (Ser258).

*Antibodies in this kit are custom formulations specific to kit.

Protocol

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PathScan® Sandwich ELISA Protocol (One-Step Test Procedure)

NOTE: This protocol is for PathScan® kits that use an HRP directly conjugated to the detection antibody (1-step method), rather than a 2-step method where the detection antibody and a secondary-HRP are added sequentially.

Refer to product-specific datasheets for assay incubation temperature.

A. Solutions and Reagents

NOTE: Prepare solutions with deionized/purified water or equivalent.

  1. Microwell strips: Bring all to room temperature before opening bag/use. Unused microwell strips should be returned to the original re-sealable bag containing the desiccant pack and stored at 4°C.
  2. Detection Antibody: Reconstitute lyophilized Detection Antibody (red colored cake) with 5.5 mL HRP Diluent. Incubate at room temperature for 5 min with occasional gentle mixing to fully reconstitute. For best results, use immediately following antibody reconstitution. Unused reconstituted Detection Antibody may be stored for up to 4 weeks at 4°C, although there may be some loss of signal compared to freshly reconstituted antibody.
  3. HRP Diluent: Red colored diluent for reconstitution and dilution of the Detection Antibody that is linked to HRP.
  4. 1X ELISA Wash Buffer: Prepare by diluting ELISA Wash Buffer (20X) (included in each kit) to 1X with deionized water.
  5. 1X Cell Lysis Buffer: Prepare by diluting 10X Cell Lysis Buffer #9803 to 1X with deionized water. This buffer can be stored at 4°C for short-term use (1–2 weeks). Recommended: When using to prepare cell lysates, add Protease/Phosphatase Inhibitor Cocktail (#5872, not supplied) and 1 mM phenylmethyl- sulfonyl fluoride (PMSF, #8553, not supplied) immediately before use.
  6. TMB Substrate (#7004): Bring to room temperature before use.
  7. STOP Solution (#7002): Bring to room temperature before use.

B. Preparing Cell Lysates

For adherent cells

  1. Aspirate media when the culture reaches 80–90% confluence. Treat cells by adding fresh media containing regulator for desired time.
  2. Remove media and rinse cells once with ice-cold 1X PBS.
  3. Remove PBS and add 0.5 mL ice-cold 1X Cell Lysis Buffer including 1 mM PMSF and Protease/Phosphatase Inhibitor Cocktail to each plate (10 cm diameter) and incubate the plate on ice for 5 min.
  4. Scrape cells off the plate and transfer to an appropriate tube. Keep on ice.
  5. Sonicate lysates on ice.
  6. Microcentrifuge for 10 min (14,000 rpm) at 4°C and transfer the supernatant to a new tube. The supernatant is the cell lysate. Store at −80°C in single-use aliquots.

For suspension cells

  1. Remove media by low speed centrifugation (~1200 rpm) when the culture reaches 0.5–1.0 x 106 viable cells/mL. Treat cells by adding fresh media containing regulator for desired time.
  2. Collect cells by low speed centrifugation (~1200 rpm) and wash once with 5-10 mL ice-cold 1X PBS.
  3. Cells harvested from 50 mL of growth media can be lysed in 2.0 mL of 1X Cell Lysis Buffer including 1 mM PMSF and Protease/Phosphatase Inhibitor Cocktail.
  4. Sonicate lysates on ice.
  5. Microcentrifuge for 10 min (14,000 rpm) at 4°C and transfer the supernatant to a new tube. The supernatant is the cell lysate. Store at −80°C in single-use aliquots.

C. Test Procedure

NOTE: Equilibrate all materials and prepared reagents to room temperature prior to running the assay.

  1. Prepare all reagents as indicated above (Section A).
  2. Samples should be undiluted or diluted with 1X Cell Lysis Buffer to a 2X protein concentration in order to achieve a final 1X protein concentration upon addition of the Detection Antibody. Individual datasheets for each kit provide a sensitivity curve that serves as a reference for selection of an appropriate starting lysate concentration. The sensitivity curve shows typical results across a range of lysate concentration points.
  3. Add 50 µL of each sample to the appropriate wells.
  4. Add 50 µL of the Detection Antibody to each well.
  5. Seal the plate and incubate for 1 hour at room temperature on a plate shaker set to 400 rpm (moderate agitation).
  6. Gently remove the tape and wash wells:
    1. Discard plate contents into a receptacle.
    2. Wash 4 times with 1X Wash Buffer, 200 µL each time for each well.
    3. For each wash, strike plates on fresh towels hard enough to remove the residual solution in each well, but do not allow wells to completely dry at any time.
    4. Clean the underside of all wells with a lint-free tissue.
  7. Add 100 µL of TMB Substrate to each well. Seal with tape and incubate the plate in the dark for 15 min at room temperature on a plate shaker (400 rpm, moderate agitation) or alternatively for 10 min at 37°C without shaking.
  8. Add 100 µL of STOP Solution to each well. Shake gently for a few seconds.
  9. NOTE: Initial color of positive reaction is blue, which changes to yellow upon addition of STOP Solution.

  10. Read results:
    1. Visual Determination: Read within 30 min after adding STOP Solution.
    2. Spectrophotometric Determination: Wipe underside of wells with a lint-free tissue. Read absorbance at 450 nm within 30 min after adding STOP Solution.

created July 2020

Protocol Id: 2144

Specificity / Sensitivity

The PathScan® Phospho-Androgen Receptor (Ser258) Sandwich ELISA Kit detects endogenous levels of androgen receptor protein phosphorylated at Ser258. The kit sensitivity is shown in Figure 1. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

Background

Androgen receptor (AR), a zinc finger transcription factor belonging to the nuclear receptor superfamily, is activated by phosphorylation and dimerization upon ligand binding (1). This promotes nuclear localization and binding of AR to androgen response elements in androgen target genes. Research studies have shown that AR plays a crucial role in several stages of male development and the progression of prostate cancer (2,3).
Upon ligand binding, AR becomes phosphorylated on many residues, including Ser258 (4).

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For Research Use Only. Not for Use in Diagnostic Procedures.
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