Corporate Banner
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Identifying Carbonylated Proteins in Brain Tissue

Published: Monday, January 17, 2011
Last Updated: Monday, January 17, 2011
Bookmark and Share
Reseachers from the Complutense University of Madrid have recently conducted an investigation into the different proteomic approaches used in identifying oxidative stress by measuring carbonyl end products of protein oxidation. The article compares the benefits and pitfalls of running the DNPH derivatization step before or after electrophoresis.

The article, which has just be accpeted by the American Chemical Society, is entitled 'Proteomic approaches to identifying carbonylated proteins in brain tissue' and is freely available online at: http://pubs.acs.org/doi/pdfplus/10.1021/pr101014e

Abstract

Oxidative stress plays a critical role in the pathogenesis of a number of diseases. The carbonyl end products of protein oxidation are among the most commonly measured markers of oxidation in biological samples. Protein carbonyl functional groups may be derivatized with 2,4-dinitrophenylhydrazine (DNPH) to render a stable 2,4-dinitrophenylhydrazone-protein (DNP-protein) and the carbonyl contents of individual proteins then determined by two-dimensional electrophoresis followed by immunoblotting using specific anti-DNP antibodies. Unfortunately, derivatization of proteins with DNPH could affect their mass spectrometry (MS) identification. This problem can be overcome using non-treated samples for protein identification. Nevertheless, derivatization could also affect their mobility, which might be solved by performing the derivatization step after the initial electrophoresis. Here, we compare two-dimensional redox proteome maps of mouse cerebellum acquired by performing the DNPH derivatization step before or after electrophoresis, and detect differences in protein patterns. When the same approach is used for protein detection and identification, both methods were useful in identifying carbonylated proteins. However, whereas pre-DNPH derivatized proteins were successfully analyzed, high background staining complicated the analysis when the DNPH reaction was performed after transblotting. Comparative data on protein identification using both methods are provided.

American Chemical Society

Proteomic approaches to identifying carbonylated proteins in brain tissue
María Linaresa,b, Patricia Marín-Garcíaa,b,c, Darío Méndeza,b,¶ , Antonio Puyeta,b, Amalia Dieza,b and José M. Bautistaa,b,*


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,000+ scientific posters on ePosters
  • More Than 4,400+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Vinegar Could Potentially Help Treat Ulcerative Colitis
Vinegar is the perfect ingredient for making tangy sauces and dressings. Now, researchers report that the popular liquid could also help fight ulcerative colitis, an inflammatory bowel disease that research suggests is related to the gut microbiome.
Monday, February 15, 2016
Sniffing Out Cancer
Scientists have been exploring new ways to “smell” signs of cancer by analyzing what’s in patients’ breath.
Thursday, October 01, 2015
New, Improved Approach To Mammograms
Detecting breast cancer in women with dense mammary tissues could become more reliable with a new mammogram procedure that researchers have now tested in pre-clinical studies of mice.
Friday, September 18, 2015
“Heat” From Chilli Peppers Could Help Kill Cancer Cells
Capsaicin, the compound responsible for chilis’ heat, is used in creams sold to relieve pain, and recent research shows that in high doses, it kills prostate cancer cells.
Friday, September 11, 2015
Preventing Drinking Water Contamination by Pharmaceuticals
In recent years, researchers have realized that many products, including pharmaceuticals, have ended up where they’re not supposed to be — in our drinking water.
Friday, September 11, 2015
Cheap Diagnostics with a Portable "Paper Machine"
Scientists have developed a cheap, portable system for point of care diagnostics for a range of infectious diseases, genetic conditions and cancer.
Monday, July 20, 2015
Microfluidic Device Mixes And Matches DNA For Synthetic Biology
Researchers have developed a microfluidic device that quickly builds packages of DNA and delivers them into bacteria or yeast for further testing.
Monday, July 06, 2015
Artificial Pancreas Controls Diabetes
Scientists are reporting the development of an implantable “artificial pancreas” that continuously measures a person’s blood sugar, or glucose, level and can automatically release insulin as needed.
Friday, July 03, 2015
Expanding the Code of Life With New “Letters”
Researchers have developed a new nucleotide pair that can be added to DNA, raising the possibility that entirely new proteins could be created for medical uses.
Friday, May 29, 2015
Bioresorbable Electronic Stent Could Provide Feedback, Therapy
Researchers have developed and tested a drug releasing electronic stent which could significantly reduce the risk associated with traditional mesh tube stents.
Thursday, May 28, 2015
How Used Coffee-Grounds Could Make Some Food More Healthful
Phenols in coffee ground extracts could be used as additives to enhances other food products.
Thursday, May 14, 2015
Kimchi-based Preservative Used in Cosmetics is Not So Natural
Scientists report that kimchi-based preservative marketed as “all-natural” contains synthetic ingredients.
Friday, April 17, 2015
Novel Nanoparticles Could Save Soldiers’ Lives After Explosions
Researchers paired clot-promoting nanoparticles with a corticosteroid that stops inflammation.
Friday, April 17, 2015
A Novel Method for Portable Detection of Potent Drugs Known as ‘Bath Salts’
Researchers developed a low-cost, disposable and rapid platform for detecting bath salts.
Saturday, September 27, 2014
Stinky Gases Emanating from Landfills Could Transform into Clean Energy
Research will be presented at a meeting of the American Chemical Society.
Wednesday, August 13, 2014
Scientific News
Releasing Cancer Cells for Better Analysis
A new device developed at the University of Michigan could provide a non-invasive way to monitor the progress of an advanced cancer treatment.
Releasing Cancer Cells for Better Analysis
A new device developed at the University of Michigan could provide a non-invasive way to monitor the progress of an advanced cancer treatment.
Apricot Kernels Pose Risk of Cyanide Poisoning
Eating more than three small raw apricot kernels, or less than half of one large kernel, in a serving can exceed safe levels. Toddlers consuming even one small apricot kernel risk being over the safe level.
Cell Transplant Treats Parkinson’s in Mice
A University of Wisconsin—Madison neuroscientist has inserted a genetic switch into nerve cells so a patient can alter their activity by taking designer drugs that would not affect any other cell.
Understanding Female HIV Transmission
Glowing virus maps points of entry through entire female reproductive tract for first time.
Genetic Markers Influence Addiction
Differences in vulnerability to cocaine addiction and relapse linked to both inherited traits and epigenetics, U-M researchers find.
Lab-on-a-Chip for Detecting Glucose
By integrating microfluidic chips with fiber optic biosensors, researchers in China are creating ultrasensitive lab-on-a-chip devices to detect glucose levels.
A lncRNA Regulates Repair of DNA Breaks in Breast Cancer Cells
Findings give "new insight" into biology of tough-to-treat breast cancer.
COPD Linked to Increased Bacterial Invasion
Persistent inflammation in COPD may result from a defect in the immune system that allows airway bacteria to invade deeper into the lung.
Detection of HPV in First-Void Urine
Similar sensitivity of HPV test on first void urine sample compared to cervical smear.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,000+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,400+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!