Difference between revisions of "Part:BBa K3431049"

 
(→‎Results)
 
(29 intermediate revisions by 3 users not shown)
Line 2: Line 2:
 
__NOTOC__
 
__NOTOC__
 
<partinfo>BBa_K3431049 short</partinfo>
 
<partinfo>BBa_K3431049 short</partinfo>
 +
<br>
 +
===Introduction===
 +
<html>
 +
This year, CSMU wants to solve the problems revolving around diagnosing oral cancer, and we decided to use toehold switches as our detection device. Toehold switches are composed of 3 main parts: trigger binding site, ribosome binding site, and a reporter gene<sup>[1]</sup>. We wanted to find the most suitable reporter gene which can be measured with ease. Therefore, we had tried different kinds of reporter genes. Including mRFP which has been mentioned in our <a href=
 +
"https://2020.igem.org/Team:CSMU_Taiwan/Contribution">contribution</a>, invertase which is our <a href= "https://parts.igem.org/Part:BBa_K3431000">new part</a>. We also had tried amilCP<sup>[2][3]</sup>, which is a blue chromoprotein that is visible to the naked eye<sup>[4]</sup>. With our improvement, amilCP's expression can be controlled, just like adding an on and off switch. AmilCP would not be expressed without a specific trigger under the regulation of toehold switches. By doing so, it could turn out to be a useful diagnostic tool.
 +
</html>
  
−
The is an amilCP (Blue Chromoprotein) generating device regulated by Banana Toehold Switch, with Strong T7 Promoter (BBa_I712074) and Double Terminator (BBa_B0015) as recognition sites for T7 RNA Polymerase in PURExpress in vitro protein synthesis kit.
+
===Method===
 +
<html>
 +
We followed the <a href="https://www.protocols.io/private/170B0BD515DE11EBAE360A58A9FEAC2A">protocol</a> we created. We expressed three of them, the original part ( <a href= "https://parts.igem.org/Part:BBa_K1087003">BBa_K1087003</a>), the toehold switch with the trigger, and the toehold switch without the trigger in vitro environment, using the cell-free PURExpress protein synthesis kits and incubating them for six hours at 37°C.
 +
<br></html>
 +
<br>
 +
 
 +
===Results===
 +
<html>
 +
This is the graph that focuses at the sixth hour. It shows the results of our experiments with the existing part and the improved part. The vertical axis shows the relative absorbing wavelength at 588 mm. And the horizontal axis represents the name of the three. The yellow bar represents the original part, and the two bars on the right represent the improved part. The blue one refers to the condition without trigger, while the green one refers to the condition with the trigger.
 +
The expression of our improved part is lower than the original ones. However, comparing the green one and the blue one, the green one expressed better. The ON/OFF ratio is 1.44, which was much higher than 1. Representing that there were significant differences between the ON state and the OFF state. The result proved that amilCP with toehold switches could only be triggered by a specific sequence, which also means the amilCP expression is lower in the absence of the trigger.
 +
<br>
 +
<br>
 +
<div style="width=100%; display:flex; align-items: center; justify-content: center">
 +
<img src="https://2020.igem.org/wiki/images/archive/9/9e/20201025012643%21T--CSMU_Taiwan--improve.png" style="width:50%">
 +
</div>
 +
</html>
 +
<br>
 +
 
 +
===Conclusion===
 +
We successfully added the new function on amilCP. With our improvement, AmilCP's expression can be controlled, just like adding an on and off switch. AmilCP would not be expressed without a specific trigger. By doing so, it could turn out to be a useful diagnostic tool.
 +
 
 +
===Reference===
 +
1.Pardee, K., Green, A. A., Takahashi, M. K., Braff, D., Lambert, G., Lee, J. W., Ferrante, T., Ma, D., Donghia, N., Fan, M., Daringer, N. M., Bosch, I., Dudley, D. M., O'Connor, D. H., Gehrke, L., & Collins, J. J. (2016). Rapid, Low-Cost Detection of Zika Virus Using Programmable Biomolecular Components. Cell, 165(5), 1255–1266. https://doi.org/10.1016/j.cell.2016.04.059
 +
 
 +
2. Part: BBa_K1087003: https://parts.igem.org/Part:BBa_K1087003
 +
 
 +
3. Part:BBa_K592025: https://parts.igem.org/Part:BBa_K592025
 +
 
 +
4. Alieva, N. O., Konzen, K. A., Field, S. F., Meleshkevitch, E. A., Hunt, M. E., Beltran-Ramirez, V., Miller, D. J., Wiedenmann, J., Salih, A., & Matz, M. V. (2008). Diversity and evolution of coral fluorescent proteins. PloS one, 3(7), e2680. https://doi.org/10.1371/journal.pone.0002680
  
 
<!-- Add more about the biology of this part here
 
<!-- Add more about the biology of this part here

Latest revision as of 16:44, 26 October 2020


Banana_ToeholdSwitch-Regulated amilCP

Introduction

This year, CSMU wants to solve the problems revolving around diagnosing oral cancer, and we decided to use toehold switches as our detection device. Toehold switches are composed of 3 main parts: trigger binding site, ribosome binding site, and a reporter gene[1]. We wanted to find the most suitable reporter gene which can be measured with ease. Therefore, we had tried different kinds of reporter genes. Including mRFP which has been mentioned in our contribution, invertase which is our new part. We also had tried amilCP[2][3], which is a blue chromoprotein that is visible to the naked eye[4]. With our improvement, amilCP's expression can be controlled, just like adding an on and off switch. AmilCP would not be expressed without a specific trigger under the regulation of toehold switches. By doing so, it could turn out to be a useful diagnostic tool.

Method

We followed the protocol we created. We expressed three of them, the original part ( BBa_K1087003), the toehold switch with the trigger, and the toehold switch without the trigger in vitro environment, using the cell-free PURExpress protein synthesis kits and incubating them for six hours at 37°C.

Results

This is the graph that focuses at the sixth hour. It shows the results of our experiments with the existing part and the improved part. The vertical axis shows the relative absorbing wavelength at 588 mm. And the horizontal axis represents the name of the three. The yellow bar represents the original part, and the two bars on the right represent the improved part. The blue one refers to the condition without trigger, while the green one refers to the condition with the trigger. The expression of our improved part is lower than the original ones. However, comparing the green one and the blue one, the green one expressed better. The ON/OFF ratio is 1.44, which was much higher than 1. Representing that there were significant differences between the ON state and the OFF state. The result proved that amilCP with toehold switches could only be triggered by a specific sequence, which also means the amilCP expression is lower in the absence of the trigger.


Conclusion

We successfully added the new function on amilCP. With our improvement, AmilCP's expression can be controlled, just like adding an on and off switch. AmilCP would not be expressed without a specific trigger. By doing so, it could turn out to be a useful diagnostic tool.

Reference

1.Pardee, K., Green, A. A., Takahashi, M. K., Braff, D., Lambert, G., Lee, J. W., Ferrante, T., Ma, D., Donghia, N., Fan, M., Daringer, N. M., Bosch, I., Dudley, D. M., O'Connor, D. H., Gehrke, L., & Collins, J. J. (2016). Rapid, Low-Cost Detection of Zika Virus Using Programmable Biomolecular Components. Cell, 165(5), 1255–1266. https://doi.org/10.1016/j.cell.2016.04.059

2. Part: BBa_K1087003: https://parts.igem.org/Part:BBa_K1087003

3. Part:BBa_K592025: https://parts.igem.org/Part:BBa_K592025

4. Alieva, N. O., Konzen, K. A., Field, S. F., Meleshkevitch, E. A., Hunt, M. E., Beltran-Ramirez, V., Miller, D. J., Wiedenmann, J., Salih, A., & Matz, M. V. (2008). Diversity and evolution of coral fluorescent proteins. PloS one, 3(7), e2680. https://doi.org/10.1371/journal.pone.0002680

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]