Quantitative Proteomics

Quantitative Proteomics The Quantitative Proteomics Center supports the ongoing research programs of collaborating laboratories.

Contact us through our website to start a new collaboration. Recent innovations in quantitative proteomics have demonstrated a variant of a label-free LC-MS (shotgun) approach in which mass spectra are recorded at alternate low (precursor) and high (product) fragmentation voltages in a method called MSE. In this approach rapidly alternating parent and product ion spectra are generated in a protoco

l that seeks to record "all the ions all the time, and these data are analyzed with an ion accounting algorithm. Increases in reproducibility of chromatographic separations have enhanced the feasibility of this approach. Building on these conceptual and instrumentation advances a number of groups have demonstrated effective use of this method for microbial cells (2), human serum (3), and cancer cells (4). Waters Corporation (Milford, MA) has implemented the MSE algorithm in a software routine known as IdentityE. We have used this system to study proteomes of Drosophila, yeast, bacterial (E. coli, Neisseria, Nitrosomonas), mouse, rat and human proteomes.

We are proud of our equipment and lab resources:
12/06/2024

We are proud of our equipment and lab resources:

Check out our publication list:
12/06/2024

Check out our publication list:

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11/27/2022

A number of publications came out during the pandemic...

https://pubmed.ncbi.nlm.nih.gov/35266109/The Non-pregnant and Pregnant Human Cervix: a Systematic Proteomic Analysis.The...
11/27/2022

https://pubmed.ncbi.nlm.nih.gov/35266109/
The Non-pregnant and Pregnant Human Cervix: a Systematic Proteomic Analysis.

These findings establish an initial platform from which we can further comprehend how changes in the human cervix proteome results in normal and abnormal cervical remodeling.

Appropriate timing of cervical remodeling (CR) is key to normal term parturition. To date, mechanisms behind normal and abnormal (premature or delayed) CR remain unclear. Recent studies show regional differences exist in human cervical tissue structure. While the entire cervix contains extracellular...

https://pubmed.ncbi.nlm.nih.gov/35219725/Changes in extracellular matrix in failing human non-ischemic and ischemic hear...
11/27/2022

https://pubmed.ncbi.nlm.nih.gov/35219725/
Changes in extracellular matrix in failing human non-ischemic and ischemic hearts with mechanical unloading.

Ischemic and non-ischemic cardiomyopathies have distinct etiologies and underlying disease mechanisms, which require in-depth investigation for improved therapeutic interventions. The goal of this study was to use clinically obtained myocardium from healthy and heart failure patients, and characteri...

https://pubmed.ncbi.nlm.nih.gov/35401570/
11/27/2022

https://pubmed.ncbi.nlm.nih.gov/35401570/

Plasmacytoid dendritic cells [pDCs] represent a rare innate immune subset uniquely endowed with the capacity to produce substantial amounts of type-I interferons. This function of pDCs is critical for effective antiviral defenses and has been implicated in autoimmunity. While IFN-I and select cytoki...

https://pubmed.ncbi.nlm.nih.gov/33376791/
11/27/2022

https://pubmed.ncbi.nlm.nih.gov/33376791/

While eukaryotic cells have a myriad of membrane-bound organelles enabling the isolation of different chemical environments, prokaryotic cells lack these defined reaction vessels. Biomolecular condensates-organelles that lack a membrane-provide a strategy for cellular organization without a physical...

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Lewis M. Brown, Director, Quantitative Proteomics Center At Columbia University, Department Of Biological Sciences, MC2417, 1212 Amsterdam Avenue
New York, NY
10027

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+16465580007

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