Difference between revisions of "Oregon Trail Survivors"

Revision as of 05:00, 24 November 2015

The third leading cause of death in the Oregon Trail.

Group Members

• Coder: Jake Woodlee
• Quality Assurance: Trixie Roque
• GenMAPP Users: Erich Yanoschik & Kristin Zebrowski
• Project Manager: Kristin Zebrowski

Helpful Links

Presentation (QA/Coder)

• PDF can be seen here

Group Meeting Times

Thursday, November 5th at 8:00 pm

Goals

Over the upcoming weeks our group will be investigating Shigella flexneri.

Week 10

1. Find genome sequence paper
2. Find 4-8 microarray data and paper that goes with the genome paper
3. Compile team page to and create a ranked annotated bibliography

Week 11

1. Prepare for journal club presentations in Weeks 12 and 13
2. Begin initial tasks on research project

Click on username links for more information regarding each team member's contributions for Week 11.

Jake: Read through the genome paper and tried to get through the accessible things I had the ability to understand. Made an outline for the genome paper. Worked on the presentation with Trixie and found a database. And of course I answered the assigned questions.

Trixie: Mainly focused on the Genome paper presentation with Jake. This includes searching for a viable database that we will be using for the rest of the group assignment and actually creating the presentation we will be doing for October 17th, 2015. I've also updated our group page to reflect what Dr. Dahlquist suggested would improve our team page.

Erich: Analyzed the microarray paper in order to describe the experimental design of the microarray data, treatments, number of replicates, and dye swaps. Worked with Kristin to produce the power point for the GennMAP users presentation at Journal Club. Worked on the individual journal entry and created an outline of the microarray paper.

Kristin: Using the team's selected microarray paper I developed an outline including background information, experimental outline/methods and how samples corresponded to the data, a brief description of the results, and a discussion including the implications of the research and its results in comparison to previous studies. Using this outline, I created a flow chart corresponding to the research. I also worked with Erich in order to create a PowerPoint for the Journal Club presentation on Nov. 24.

Week 12

1. QA will be doing an initial database export.
2. Coder will be setting up version control.
3. GenMAPP users will compile the raw data from the micorarray file to prepare for normalization and statistic analysis (will begin if time permits after consultation with Dr. Dahlquist). Additionally, the GenMAPP users will be determining the number of biological or technical replicates and how samples were labeled.
4. Coder and QA will present on genome paper in class Tuesday, Nov. 24.

Click on username links for more information regarding each team member's contributions for Week 11.

• Jake:
• Trixie: Finished the preliminary export of the UniProt and GO-OBO XML and GOA files. Also started identifying the gene id's for the specie. Decided on file management system with Jake.
• Erich: Worked with Kristin in determining the total number of biological and technical replicates. Compiled the raw data for RP samples, specifically the ID and Log ratio columns. Incorporated the RP and RX data into one spreadsheet with Kristins data. We created a table of the sample data and file each corresponds with, also figured out there were no dye swaps in the experiment(The control was the Cy3 dye and the treatment the Cy5 dye).
• Kristin: Determined that there were 3 biological replicates per treatment for 6 treatments total. Compiled raw data for RX samples by re-naming columns for ID and Log Ratio and putting into same worksheet, which was later combined with Erich's worksheet for RP samples. Erich and I met and worked together to create a table of which samples correspond to which file.

Overview of Genome Paper

• Used the genome sequencing article to perform a prospective search in the Web of Science database.
• Overview of the search:
  • How many articles does this article cite? 37
  • How many articles cite this article? 303
  • Based on the titles and abstracts of the papers, what type of research directions have been taken now that the genome for that organism has been sequenced?
    • Now that the genome has been sequenced, a majority of research has been done on discovering which genes are responsible for virulence and pathogenesis as well as potential antibiotics. Genomic research is also focused on how S. flexneri has been able to develop resistance to multiple drugs. Furthermore, Shigella is suspected to have evolved from Escherichia coli so a lot of research has been done in how and when pathogenic Shigella split from E. coli on the evolutionary tree.

Annotated Bibliography

Genome Paper

Jin, Q., Yuan, Z., Xu, J., Wang, Y., Shen, Y., Lu, W., … Yu, J. (2002). Genome sequence of Shigella flexneri 2a: insights into pathogenicity through comparison with genomes of Escherichia coli K12 and O157. Nucleic Acids Research, 30(20), 4432–4441.

• PubMed Abstract: http://www.ncbi.nlm.nih.gov/pubmed/?term=Genome+sequence+of+Shigella+flexneri+2a%3A+insights+into+pathogenicity+through+comparison+with+genomes+of+Escherichia+coli+K12+and+O157
• PubMed Central: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC137130/
• Publisher Full Text (HTML): http://nar.oxfordjournals.org/content/30/20/4432.full
• Publisher Full Text (PDF): http://nar.oxfordjournals.org/content/30/20/4432.full.pdf+html
• Copyright: 2002 Oxford University Press
• Publisher: Oxford University Press
• Availability: in print and online
• Did LMU pay a fee for this article: no

Microarray Paper

Fu H, Liu L, Zhang X, Zhu Y, Zhao L, Peng J, et al. (2012) Common Changes in Global Gene Expression Induced by RNA Polymerase Inhibitors in shigella flexneri. PLoS ONE 7(3): e33240. doi:10.1371/journal.pone.0033240

• The link to the abstract
• The link to the full text of the article in PubMed Central
• The link to the full text of the article (HTML format) from the publisher web site.
• The link to the full PDF version of the article from the publisher web site.
• Copyright: © 2012 Fu et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
• Does the journal own the copyright? NO
• Do the authors own the copyright? Yes
• Do the authors own the rights under a Creative Commons license? Yes
• Is the article available “Open Access”? Yes
• What organization is the publisher of the article? What type of organization is it? PLoS One is the publisher/Journal. It hosts open access research articles. (Public Library of Science)
• Is this article available in print or online only? Online only
• Has LMU paid a subscription or other fee for your access to this article? No LMU has not paid a subscription or other fee because it is open access on the Public Library of Science.
• Use the genome sequencing article you found to perform a prospective search in the ISI Web of Science/Knowledge database.
  • How many articles does this article cite? 25 cited references
  • How many articles cite this article? 0 articles cite this article
  • Based on the titles and abstracts of the papers, what type of research directions have been taken now that the genome for that organism has been sequenced?
• Well given that there are no papers that cite this paper there hasn't been anything done to build on this specific topic. In regards to the genome I think this paper has built on the work of the people who sequenced the first genome of Shigella flexneri as well as the other micro array papers.
• State which database you used to find the data and article: ArrayExpress
• State what you used as search terms and what type of search terms they were: "shigella flexneri" filtered by organism, experiment type: "rna assay", experiment type: "array assay"
• Give an overview of the results of the search.
  • How many results did you get? 7 results returned with 6 viable options due to the number assays.
  • Give an assessment of how relevant the results were: Very relevant, 6/7 results were viable.
• Link to microarray data
• What experiment was performed? What was the "treatment" and what was the "control" in the experiment?
  • Antibiotics (RNA Polymerase Inhibitors) were added to Shigella flexneri in order to see if bacteria became less active. The control was a group of bacteria with no drugs added to them, and the treatment was a group of bacteria with drugs added to them.
• Were replicate experiments of the "treatment" and "control" conditions conducted? Were these biological or technical replicates? How many of each?
  • There are two drugs RX and RP with 6 samples per drug. The experiment was run 3 times which yielded 36 assays. I believe that means 3 biological replicates and 12 technical replicates within each experiment, but I am not 100 percent sure.