The document discusses early detection of viral infections through gene expression analysis. Samples were taken from subjects infected with Lassa virus or Marburg virus over several days. Gene expression levels were measured from the samples. A subset of genes were found to have differential expression 3 days post-exposure, indicating they may serve as early markers of viral infection. Taking multiple samples over time allows analysis of changes in gene expression during the course of infection.
11. No change
Increase
in expression
Decrease
in expression
Probably
random
Probably significant
30
High
expression
Low
expression
Days post-infection
Significant high magnitude change
Wednesday, May 1, 13
12. No change
Increase
in expression
Decrease
in expression
High
expression
Low
expression
Days post-infection
Probably
random
Probably significant
Significant high magnitude change
30
Wednesday, May 1, 13
13. No change
Increase
in expression
Decrease
in expression
High
expression
Low
expression
Days post-infection
Probably
random
Probably significant
Not significant high magnitude change
30
Wednesday, May 1, 13
14. No change
Increase
in expression
Decrease
in expression
High
expression
Low
expression
Days post-infection
Probably
random
Probably significant
Not significant high magnitude change
30
Wednesday, May 1, 13
15. No change
Increase
in expression
Decrease
in expression
High
expression
Low
expression
Days post-infection
Probably
random
Probably significant
Significant low magnitude change
30
Wednesday, May 1, 13
16. No change
Increase
in expression
Decrease
in expression
High
expression
Low
expression
Days post-infection
Probably
random
Probably significant
Significant low magnitude change
30
Wednesday, May 1, 13
17. A subset of probes is differentially expressed 3 days post-exposure
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18. A subset of probes is differentially expressed 3 days post-exposure
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22. Lassa
Marburg
4
1 2 3 4 5 6 7 8 9 10 11 120
2
1
Days post-exposure
Number of
Samples
1
Test data set
Wednesday, May 1, 13
23. Lassa
Marburg
4
1 2 3 4 5 6 7 8 9 10 11 120
2
1
Days post-exposure
Number of
Samples
1 β
Test data set
Wednesday, May 1, 13
24. Aim 1: Early detection of highly pathogenic viral infections
Compare the early transcriptional response of Lassa and Marburgβ
Wednesday, May 1, 13
25. Aim 1: Early detection of highly pathogenic viral infections
Compare the early transcriptional response of Lassa and Marburgβ
Identify a set of candidate biomarker genesβ
Wednesday, May 1, 13
26. Validate the current set of biomarkers using qPCR
Aim 1: Early detection of highly pathogenic viral infections
Compare the early transcriptional response of Lassa and Marburgβ
Identify a set of candidate biomarker genesβ
Wednesday, May 1, 13
27. Validate the current set of biomarkers using qPCR
Compare the differences in using sequencing to measure gene expression
Aim 1: Early detection of highly pathogenic viral infections
Compare the early transcriptional response of Lassa and Marburgβ
Identify a set of candidate biomarker genesβ
Wednesday, May 1, 13
28. Validate the current set of biomarkers using qPCR
Compare the differences in using sequencing to measure gene expression
Incorporate additional viruses to the analysis
Aim 1: Early detection of highly pathogenic viral infections
Compare the early transcriptional response of Lassa and Marburgβ
Identify a set of candidate biomarker genesβ
Wednesday, May 1, 13
29. Aim 2: Visualization of complex biological data
Develop a software tool to easily generate interactive plotsβ
Wednesday, May 1, 13
30. Aim 2: Visualization of complex biological data
Develop a software tool to easily generate interactive plotsβ
Make generating a dynamic plot as easy as a static one
Wednesday, May 1, 13
31. Aim 2: Visualization of complex biological data
Develop a software tool to easily generate interactive plotsβ
Make generating a dynamic plot as easy as a static one
Aim 3: Experimental training
Develop core skills in experimental virology
Wednesday, May 1, 13
32. Aim 2: Visualization of complex biological data
Develop a software tool to easily generate interactive plotsβ
Make generating a dynamic plot as easy as a static one
Aim 3: Experimental training
Develop core skills in experimental virology
Design and carry out experiments to determine viral and
host gene function
Wednesday, May 1, 13