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Benchmarking Currently Available SELDI-TOF MS Preprocessing Techniques.

Emanuele VA, Gurbaxani BM.
Proteomics doi 0.1002/pmic.200701171.

Summary

This study evaluates and proposes standards for methods of analyzing complex laboratory data measuring proteins in blood.

Abstract

SELDI protein profiling experiments can be used as a first step in studying the pathogenesis of various diseases such as cancer. There are a plethora of software packages available for doing the preprocessing of SELDI data, each with many options and written from different signal processing perspectives, offering many researchers choices they may not have the background or desire to make. Moreover, several studies have shown that mistakes in the preprocessing of the data can bias the biological interpretation of the study. For this reason, we conduct a large scale evaluation of available signal processing techniques to establish which are most effective. We use data generated from a standard, published simulation engine so that “truth” is known. We select the top algorithms by considering two logical performance metrics, and give our recommendations for research directions that are likely to be most promising. There is considerable opportunity for future contributions improving the signal processing of SELDI spectra.

Page last modified on April 30, 2009


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