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Use of Biplots and Partial Least Squares Regression in Microarray Data Analysis for Assessing Association between Genes Involved in Different Biological Pathways

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Computational Intelligence Methods for Bioinformatics and Biostatistics (CIBB 2010)

Part of the book series: Lecture Notes in Computer Science ((LNBI,volume 6685))

Abstract

Microarrays are widely used to study expression profiles for thousand of transcripts simultaneously and to explore inter-relationships between sets of genes.

Visualization techniques and Partial Least Squares (PLS) regression have thus gained relevance in genomic. Biplots provide an aid to understand relationships between genes and samples and among genes, whereas passive projections of variables are helpful for understanding conditional relationships between sets of genes to be quantitatively evaluated via PLS regression.

62 genes involved in loss of cell polarity and 8 involved in Epithelial-Mesenchymal Transition (EMT), were selected from a study on 49 mesothelioma samples, and analysis considered EMT genes as conditioning and polarity genes as conditioned variables. PLS regression results are consistent with the PCA-based biplot of EMT genes and with passive projections of polarity genes.

Future work will address sparsity in PCA and PLS regression. PLS path modeling will be considered after specification of a detailed dependency network.

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Author information

Authors and Affiliations

  1. Section of Medical Statistics and Biometry ”‘G.A. Maccacaro’”, University of Milan Campus ”‘Cascina Rosa’”, via Vanzetti 5, 20133, Milano, MI, Italy

    Niccoló Bassani, Federico Ambrogi, Danila Coradini & Elia Biganzoli

  2. Unit of Medical Statistics, Biometry and Bioinformatics, National Cancer Institute, Milan Campus ”‘Cascina Rosa’”, via Vanzetti 5, 20133, Milano, MI, Italy

    Elia Biganzoli

Authors
  1. Niccoló Bassani
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  2. Federico Ambrogi
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  3. Danila Coradini
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  4. Elia Biganzoli
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Editor information

Editors and Affiliations

  1. ICAR-CNR, Consiglio Nazionale delle Ricerche, 90128, Palermo, Italy

    Riccardo Rizzo

  2. School of Computing and Mathematical Sciences, Liverpool John Moores University, L3 3AF, Liverpool, UK

    Paulo J. G. Lisboa

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Bassani, N., Ambrogi, F., Coradini, D., Biganzoli, E. (2011). Use of Biplots and Partial Least Squares Regression in Microarray Data Analysis for Assessing Association between Genes Involved in Different Biological Pathways. In: Rizzo, R., Lisboa, P.J.G. (eds) Computational Intelligence Methods for Bioinformatics and Biostatistics. CIBB 2010. Lecture Notes in Computer Science(), vol 6685. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21946-7_10

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  • DOI: https://doi.org/10.1007/978-3-642-21946-7_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-21945-0

  • Online ISBN: 978-3-642-21946-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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