Search anything and hit enter
  • Teams
  • Members
  • Projects
  • Events
  • Calls
  • Jobs
  • publications
  • Software
  • Tools
  • Network
  • Equipment

A little guide for advanced search:

  • Tip 1. You can use quotes "" to search for an exact expression.
    Example: "cell division"
  • Tip 2. You can use + symbol to restrict results containing all words.
    Example: +cell +stem
  • Tip 3. You can use + and - symbols to force inclusion or exclusion of specific words.
    Example: +cell -stem
e.g. searching for members in projects tagged cancer
Search for
Count
IN
OUT
Content 1
  • member
  • team
  • department
  • center
  • program_project
  • nrc
  • whocc
  • project
  • software
  • tool
  • patent
  • Administrative Staff
  • Assistant Professor
  • Associate Professor
  • Clinical Research Assistant
  • Department Manager
  • Full Professor
  • Graduate Student
  • Lab assistant
  • Non-permanent Researcher
  • Permanent Researcher
  • Pharmacist
  • PhD Student
  • Physician
  • Post-doc
  • Project Manager
  • Research Associate
  • Research Engineer
  • Retired scientist
  • Technician
  • Undergraduate Student
  • Veterinary
  • Visiting Scientist
  • Deputy Director of Center
  • Deputy Director of Department
  • Deputy Director of National Reference Center
  • Deputy Head of Facility
  • Director of Center
  • Director of Department
  • Director of Institute
  • Director of National Reference Center
  • Group Leader
  • Head of Facility
  • Head of Operations
  • Head of Structure
  • Honorary President of the Departement
  • Labex Coordinator
Content 2
  • member
  • team
  • department
  • center
  • program_project
  • nrc
  • whocc
  • project
  • software
  • tool
  • patent
  • Administrative Staff
  • Assistant Professor
  • Associate Professor
  • Clinical Research Assistant
  • Department Manager
  • Full Professor
  • Graduate Student
  • Lab assistant
  • Non-permanent Researcher
  • Permanent Researcher
  • Pharmacist
  • PhD Student
  • Physician
  • Post-doc
  • Project Manager
  • Research Associate
  • Research Engineer
  • Retired scientist
  • Technician
  • Undergraduate Student
  • Veterinary
  • Visiting Scientist
  • Deputy Director of Center
  • Deputy Director of Department
  • Deputy Director of National Reference Center
  • Deputy Head of Facility
  • Director of Center
  • Director of Department
  • Director of Institute
  • Director of National Reference Center
  • Group Leader
  • Head of Facility
  • Head of Operations
  • Head of Structure
  • Honorary President of the Departement
  • Labex Coordinator
Search
Go back
Scroll to top
Share
© Research
Publication : Analytica chimica acta

Silica nanoparticles pre-spotted onto target plate for laser desorption/ionization mass spectrometry analyses of peptides.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Analytica chimica acta - 05 Sep 2012

Dupré M, Cantel S, Durand JO, Martinez J, Enjalbal C,

Link to Pubmed [PMID] – 22840704

Link to DOI – 10.1016/j.aca.2012.06.037

Anal Chim Acta 2012 Sep; 741(): 47-57

We report on the simple deposition of Stöber silica nanoparticles (SiO(2) NPs) on conventional MALDI target plate for high throughput laser desorption/ionization mass spectrometry (LDI-MS) analyses of peptide mixtures with sensitivity in the femtomolar range. This low-cost easily prepared material allowed straightforward LDI experiments by deposition of the studied samples directly onto a pre-spotted MALDI plate. This analytical strategy can be performed in any laboratory equipped with a MALDI-TOF instrument. All key benefits of organic matrix-free technologies were satisfied while maintaining a high level of detection performances (sensitivity and reproducibility/repeatability). In particular, sample preparation was simple and detection in the low mass range was not hampered by matrix ions. Imaging studies were undertaken to query sample dispersion into the inert SiO(2) NPs and to help into the search of the best experimental conditions producing homogeneous analyte distribution within the deposit. In contrast to commercial disposable LDI targets designed for single use and requiring an adaptor such as NALDI™, the proposed SiO(2) NPs pre-spotting on a MALDI target plate allowed very easily switching between MALDI and LDI experiments. They can be conducted either simultaneously (positions with an organic matrix or SiO(2) NPs) or in the row (support prepared in advance, stored and washed after use). The overall cost and versatility of the methodology made it very attractive to MALDI users in many domains (peptidomics, proteomics, metabolomics).

https://pubmed.ncbi.nlm.nih.gov/22840704