Bioinformatics Advance Access published online on October 18, 2006
Bioinformatics, doi:10.1093/bioinformatics/btl531
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1 Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr. SE, Albuquerque, NM 87108, USA
* To whom correspondence should be addressed.
Motivation: Little is known regarding the transcriptional mechanisms involved in forming and maintaining epithelial cell lineages of the mammalian respiratory tract. Results: Herein, a motif discovery approach was used to identify novel transcriptional regulators in the lung using genes previously found to be regulated by Foxa2 or Wnt signaling pathways. A human-mouse comparison of both novel and known motifs was also performed. Some of the factors and families identified here were previously shown to be involved epithelial cell differentiation (ETS family, HES-1, MEIS-1), and ciliogenesis (RFX family), but have never been characterized in lung epithelia. Other unidentified over-represented motifs suggest the existence of novel mammalian lung transcription factors. Of the fraction of motifs examined we describe 25 transcription factor family predictions for lung. Fifteen novel factors were shown here to be expressed in mouse lung, and/or human bronchial or distal lung epithelial tissues or lung epithelial cell lineages. Availability: DME: http://rulai.cshl.edu/dme. MATCOMPARE: http://rulai.cshl.edu/MatCompare. MOTIFCLASS is available from the authors. Supplementary Material: http://www.lrri.org/Martinez2006motifsSupplement/.
Received March 14, 2006
Revised September 21, 2006
Accepted October 13, 2006
Article
Computational prediction of novel components of lung transcriptional networks
M. Juanita Martinez 1, Andrew D. Smith 2 *, Bilan Li 1, Michael Q. Zhang 2, and Kevin S. Harrod 1
2 Cold Spring Harbor Laboratory, One Bungtown Rd, Cold Spring Harbor, NY 11724, USA
Andrew D. Smith, E-mail: asmith{at}cshl.edu
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Abstract
Associate Editor: Martin Bishop
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