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Total c-Src cellular kit HTRF®

The Total c-Src kit monitors cellular c-Src expression level and can be used as a normalization assay for the phospho-c-Src kit.
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  • Highly specific Highly specific
  • Ease-of-use Ease-of-use
The Total c-Src kit monitors cellular c-Src expression level and can be used as a normalization assay for the phospho-c-Src kit.
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Overview

The Total c-Src cellular assay monitors total c-Src and is used as a normalization assay with the phospho-c-Src kit. This protein is a member of the Src kinase family and shares a high degree of sequence identity with the ten other members. This protein is a membrane-associated, non-receptor tyrosine kinase. Its autophosphorylation on the residue Tyr419 indicates its full activation. c-Src kinase is over-expressed and highly activated in many human cancers, making it a promising target for cancer therapy.

Benefits

  • COMPATIBLE WITH MANY CELL TYPES
  • SPECIFICITY
  • DATA NORMALIZATION

Total-c-Src assay principle

The Total-c-Src assay quantifies the expression level of c-Src in a cell lysate. Contrary to Western Blot, the assay is entirely plate-based and does not require gels, electrophoresis or transfer. The Total-c-Src assay uses two labeled antibodies: one coupled to a donor fluorophore, the other to an acceptor. Both antibodies are highly specific for a distinct epitope on the protein. In presence of c-Src in a cell extract, the addition of these conjugates brings the donor fluorophore into close proximity with the acceptor and thereby generates a FRET signal. Its intensity is directly proportional to the concentration of the protein present in the sample, and provides a means of assessing the protein’s expression under a no-wash assay format.
Total-c-Src assay principle

Total-c-Src 2-plate assay protocol

The 2 plate protocol involves culturing cells in a 96-well plate before lysis then transferring lysates to a 384-well low volume detection plate before adding Total-c-Src HTRF detection reagents. This protocol enables the cells' viability and confluence to be monitored.
Total-c-Src 2-plate assay protocol

Total-c-Src 1-plate assay protocol

Detection of total cSrc with HTRF reagents can be performed in a single plate used for culturing, stimulation and lysis. No washing steps are required. This HTS designed protocol enables miniaturization while maintaining robust HTRF quality.
Total-c-Src 1-plate assay protocol

Selectivity of HTRF assays for c-Src validated by siRNA experiments on human HEK293 cells

Human HEK293 embryonic kidney cells were plated and cultured for 24h. Cells were then transfected with a c-Src siRNA or with a negative control and treated with increasing concentrations of H2O2 before medium removal and lysis. Lysates were transferred into a 384-well low volume white microplate and kit reagents were added. Cell treatment with the c-Src siRNA led to a huge decrease of the HTRF signal (~ 75%) compared to the cells transfected with the negative control siRNA, demonstrating that this kits is selective for c-Src and do not cross-react with other Src family members.
Specificty of the HTRF total c-Src kits validated using siRNA on HEK293 cells

HTRF vs WB using total c-Src assays on A431 cancer cells

Human A431 cancer cells were seeded in a T175 flask and cultured until 80% confluency was reached. Following cell lysis, soluble supernatants were collected via centrifugation and serial dilutions were performed in the supplemented lysis buffer and transferred into a 384-well low volume white microplate before finally adding HTRF total detection reagents. Equal amounts of lysates were used for a side by side comparison between Western Blot and HTRF. The HTRF total c-Src assay is 8-fold more sensitive than WB.
HTRF vs WB using total c-Src assays on A431 cancer cells

Bosutinib Inhibition of c-Src activity in HEK293 cells

HEK293 cells were plated at 100,000 cells/well in a 96-well plate, and incubated for 24h at 37°C, 5% CO2. After treatment for 30 minutess with increasing concentrations of Bosutinib and then stimulation with 20 mM H2O2 for 10 minutes, the medium was removed and the cells were lysed with 50 µL of supplemented lysis buffer #3 for 30 minutess at RT under gentle shaking. 16 µL of lysate were transferred into a 384-well low volume white microplate and 4 µL of the HTRF phospho- or total c-Src detection reagents were added. The HTRF signal was recorded after 4 hours of incubation.
Bosutinib Inhibition of c-Src activity in HEK293 cells

c-Src activation in human A431 epidermoid carcinoma cells using H2O2

A431 cells were plated at 100,000 cells/well in a 96-well plate, and incubated for 24h at 37°C, 5% CO2. After treatment for 10 minutes with increasing concentrations of H2O2, the medium was removed and the cells were lysed with 50 µL of supplemented lysis buffer #3 for 30 minutess at RT under gentle shaking. 16 µL of lysate were transferred into a 384-well low volume white microplate and 4 µL of the HTRF phospho- or total c-Src detection reagents were added. The HTRF signal was recorded after 4 hours of incubation.
c-Src activation in human A431 epidermoid carcinoma cells using H2O2

Validation on other human cancer cell lines

Culture-treated 96-well plates were seeded with human HepG2 hepatocellular carcinoma cells, human HeLa cervical carcinoma cells and human MCF-7 breast cancer cells. After incubation, cells were lysed with 50 µL of supplemented lysis buffer #3 for 30 minutess at RT under gentle shaking. 16 µL of lysate were transferred into a 384-well low volume white microplate, and 4 µL of the HTRF phospho- or total c-Src detection reagents were added. The HTRF signal was recorded after 4 hours of incubation.
Validation on other human cancer cell lines

c-Srt Simpified Pathway

c-Src is a membrane-associated, non-receptor protein tyrosine kinase that’s ubiquitously expressed in all cell types. The kinase is inactive when phosphorylated on Tyr530. Dephosphorylation of Tyr530 followed by autophosphorylation on Tyr419 is a hallmark of its full activation. c-Src is mainly activated by RTKs, integrins and ROS, and is a key signaling intermediary regulating numerous pathways such as AKT, MAPKs, STATs and NF?B. It regulates cell proliferation, differentiation, survival, morphology, adhesion and migration. Precise regulation of Src activity is therefore critical for normal cell growth. This derived-proto-oncogene is over-expressed and highly activated in many human cancers (e.g. breast, colon and pancreatic), making it a promising target for cancer therapy.
c-Src signaling pathway

Simplified pathway dissection with HTRF phospho-assays and CyBi-felix liquid handling

Analyse of PI3K/AKT/mTor translational control pathway - Application Notes

Open R&D: Sanofi Access Platform

In collaboration with Sanofi - Scientific Presentations

Lysis buffer compatibility

Cell Signaling: Biomarkers, Phospho- & total-protein Assays - Flyers

HTRF cellular phospho-protein assays

Physiologically relevant results fo fast flowing research - Flyers

Species compatibility

Cell Signaling: Biomarkers, Phospho- & total-protein assays - Flyers

Universal HTRF® phospho-protein platform: from 2D, 3D, primary cells to patient derived tumor cells

Analysis of a large panel of diverse biological samples and cellular models - Posters

HTRF phospho assays reveal subtle drug induced effects in tumor-xenografts

Tumor xenograft analysis: HTRF versus Western blot - Application Notes

HTRF cell-based phospho-protein data normalization

Valuable guidelines for efficiently analyzing and interpreting results - Application Notes

HTRF phospho-total lysis buffer: a universal alternative to RIPA lysis buffers

Increased flexibility of phospho-assays - Application Notes

Best practices for analyzing brain samples with HTRF® phospho assays for neurosciences

Insider Tips for successful sample treatment - Technical Notes

HTRF Alpha-tubulin Housekeeping kit

Properly interpret your compound effect - Application Notes

Optimize your HTRF cell signaling assays on tissues

HTRF and WB compatible guidelines - Technical Notes

Key guidelines to successful cell signaling experiments

Mastering the art of cell signaling assays optimization - Guides

HTRF phospho-assays reveal subtle drug-induced effects

Detailed protocol and direct comparison with WB - Posters

Best practices for analyzing tumor xenografts with HTRF phospho assays

Protocol for tumor xenograft analysis with HTRF - Technical Notes

How to run a cell based phospho HTRF assay

What to expect at the bench - Videos

Unleash the potential of your phosphorylation research with HTRF

Unmatched ease of use, sensitivity and specificity assays - Videos

Product Insert c-Src total Kit / 64NSRPEG-64NSRPEH

64NSRPEG-64NSRPEH - Product Insert

HTRF Product Catalog

All your HTRF assays in one document! - Catalog

A guide to Homogeneous Time Resolved Fluorescence

General principles of HTRF - Guides

How HTRF compares to Western Blot and ELISA

Get the brochure about technology comparison. - Brochures

HTRF® cell signaling platform combined with iCell® Hepatocytes

A solution for phospho-protein analysis in metabolic disorders - Posters

Unleash the potential of your phosphorylation research with HTRF

A fun video introducing you to phosphorylation assays with HTRF - Videos

How to run a cell based phospho HTRF assay

3' video to set up your Phospho assay - Videos

Guidelines for Cell Culture and Lysis in Different Formats Prior to HTRF Detection

Seeding and lysing recommendations for a number of cell culture vessels. - Technical Notes

Assessment of drug efficacy and toxicity by combining innovative technologies

Combination of AlphaLISA®, HTRF®, or AlphaLISA® SureFire® Ultra™ immunoassays with the ATPlite™ 1step cell viability assay - Application Notes

Methodological Aspects of Homogeneous Time-Resolved Fluorescence (HTRF)

Learn how to reduce time and sample consumption - Application Notes

Plate Reader Requirement

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