Team:Imperial College/Summary

From 2008.igem.org

(Difference between revisions)
m
 
(22 intermediate revisions not shown)
Line 1: Line 1:
{{Imperial/StartPage2}}
{{Imperial/StartPage2}}
-
=== Summer Summary ===
+
 
 +
=== Project Summary ===
{{Imperial/Box1|Design|
{{Imperial/Box1|Design|
In order to achieve our specifications of design, we require the following devices;  
In order to achieve our specifications of design, we require the following devices;  
Line 13: Line 14:
(AB is our antibiotic resistance cassette, ''ytvA'' is the gene controlling the light-sensing pathway, ''SB'' is the biomaterial, ''epsE'' the clutch and the 5' and 3' sections are integration sites. Light-inducible promoters are labelled with an 'L')
(AB is our antibiotic resistance cassette, ''ytvA'' is the gene controlling the light-sensing pathway, ''SB'' is the biomaterial, ''epsE'' the clutch and the 5' and 3' sections are integration sites. Light-inducible promoters are labelled with an 'L')
-
 
-
 
|}}
|}}
-
{{Imperial/Box1|Modeling - Overview|
+
{{Imperial/Box1|Modelling|
 +
The Dry Lab used computational simulations to explore the different properties of the Biofabricator. Our activities are summarized on this page. To find out more please visit the [https://2008.igem.org/Team:Imperial_College/Dry_Lab '''Dry Lab Hub'''].
====== Growth Curve ======
====== Growth Curve ======
-
The growth of B. subtilis was characterised by simulating it on MATLAB.  The aim was to increase the predictability of its behaviour during the growth.  Also, the characterisation acts as a way to verify the accuracy of the experimental results. Several parameters, such as the growth constant and the Hill coefficient, were determined. These were incorporated into the model to further enhance its accuracy.
+
We have developed a simple model for the growth of B. subtilis where the rate of growth is related to the amount of nutrients available. To this purpose we have exploited the ideas put forward by last year's Imperial College iGEM team for their modelling of F2620 in a cell-free system.
====== Genetic Circuit ======
====== Genetic Circuit ======
-
We have considered two mathematical models describing the time evolution of aspects of the genetic circuitry that comprise our device. We verify which model best describes the behaviour of the circuit using laboratory data.
+
We have also built mathematical models for the time evolution of the basic genetic circuits that comprise our device. We have verified which model best describe the behaviour of the circuit better by using laboratory data.
-
 
+
====== Motility Analysis ======
====== Motility Analysis ======
-
We have developed a simple mechanical model for the swimming motility of ''B. subtilis''. Using manual tracking, we were able to extract x,y coordinate data from the cell trajectory. This allowed us to fit experimental data with our model. It was concluded that flagellum force of ''B. subtilis'' was exponentially distributed.
+
Finally, we have carried out a detailed analysis of the swimming motility of B. subtilis, which led us, among other  things, to develop a simple mechanical model for the swimming motility of B. subtilis. Using manual tracking, we were able to extract x,y coordinate data from the cell trajectory. This has allowed us to fit experimental data with our model. The data suggest that flagellar force of ''B. subtilis'' is Exponentially distributed.  
 +
 
 +
All model simulations and motility data analysis were carried out with MATLAB. Cell tracking was done with ImageJ via the Manual Tracking Plugin. All our MATLAB files can be found in the Appendices section.
 +
 
[[Image:Motility_Summary.jpg|center|600px]]<br>
[[Image:Motility_Summary.jpg|center|600px]]<br>
|}}
|}}
Line 32: Line 34:
[[Image:Implementation.PNG|center|600px]]
[[Image:Implementation.PNG|center|600px]]
-
}}
+
|}}
{{Imperial/Box1|Testing|
{{Imperial/Box1|Testing|
The testing and validation of our project can be split into three main areas;  
The testing and validation of our project can be split into three main areas;  
*'''Work with ''B. subtilis''''' - Including characterisation of growth curves and transformation,
*'''Work with ''B. subtilis''''' - Including characterisation of growth curves and transformation,
-
*'''Characterisation and control of motility'''
+
*'''Extensive Characterisation ''' of new ''B.subtilis'' biobricks, Chloramphenicol resistance gene and motility
*'''Production of Biomaterials in ''B. subtilis'''''
*'''Production of Biomaterials in ''B. subtilis'''''
-
Please see the [https://2008.igem.org/Team:Imperial_College/Major_Results Results Page] for more information on the key results from the testing and validation.
+
If you'd like to see more information on the key results from the testing and validation, you can find it on the [https://2008.igem.org/Team:Imperial_College/Major_Results '''Results Page'''].
-
 
+
=====Results=====
-
|[[Image:Result.PNG|center|300px]]
+
|[[Image:Result.PNG|center|300px]]}}
-
}}
+
{{Imperial/Box1|Achievements|
{{Imperial/Box1|Achievements|
Here is a summary of the achievements of the Imperial College 2008 team:
Here is a summary of the achievements of the Imperial College 2008 team:
-
*Submitted x..number of documented parts to the registry,
+
*Submitted 45 documented parts to the Registry
-
*Characterized and improved the existing part.....,
+
*<html><a target="_blank" href="https://2008.igem.org/Team:Imperial_College/CAT"><b>Characterized</b></a></html> and improved the existing part <html><a href="http://partsregistry.org/wiki/index.php/Part:BBa_J31005"  target="_blank">BBa J31005</a></html> (chloramphenicol acetyl transferase, CAT)
 +
*<html><a target="_blank" href="https://2008.igem.org/Team:Imperial_College/Biobricks"><b>Characterized</b></a></html> the new promoter and ribosome binding sites biobricks <html><a target="_blank" href="http://partsregistry.org/wiki/index.php/Part:BBa_K143079">BBa K143079</a></html> and <html><a target="_blank" href="http://partsregistry.org/wiki/index.php/Part:BBa_K143082">BBa K143082</a></html> that we submitted this year.
*Developed integration sequences for Biobricks, to allow devices to be constructed that can then be excised and planted into ''B. subtilis''
*Developed integration sequences for Biobricks, to allow devices to be constructed that can then be excised and planted into ''B. subtilis''
-
*Layed the groundwork for future teams to work with ''B. subtilis'' by BioBricking promoters, RBSs, terminators and so on and characterising them
+
*Laid the groundwork for future teams to work with ''B. subtilis'' by BioBricking and characterising promoters, RBSs, integration sequences, coding sequences and complex devices
*Showed that expansion into other organisms is a definite possibility!
*Showed that expansion into other organisms is a definite possibility!
*Developed a method for tracking and analysing bacterial motility
*Developed a method for tracking and analysing bacterial motility
*Helped Bristol by sending them a mini-iGEM project: ''Chemotactic dot-to-dot'' with information on quorum sensing and directed movement
*Helped Bristol by sending them a mini-iGEM project: ''Chemotactic dot-to-dot'' with information on quorum sensing and directed movement
-
*Helped Bristol by sending them a part (BBa_J37015) from our 2007 stock which was an empty vector in the Registry
+
*Helped Bristol by sending them part <html><a href="http://partsregistry.org/wiki/index.php/Part:BBa_J37015" target="_blank">BBa_J37015</a></html> (AHL generator + GFP) from our 2006 stock which was an empty vector in the Registry
-
}}
+
*Helped Cambridge by sending them a plate of ''Synechocystis'' PCC680 and a genome preparation
 +
|}}
<hr><br>
<hr><br>
-
{{Imperial/Box2||Of course, that is a very simplified description of our project. We expanded upon our project by looking into possible areas for real-world applications. For a case-study of such an implementation, check out how our project fits in with [[Team:Imperial_College/Cellulose | '''>>> Biocouture >>>''']]}}
+
{{Imperial/Box2||Of course, that is a very simplified description of our project. We expanded upon our project by looking into possible areas for real-world applications. For a case-study of such an implementation, check out how our project fits in with [[Team:Imperial_College/Cellulose | '''>>> Biocouture >>>''']]|}}
{{Imperial/EndPage|Chassis_2|Cellulose}}
{{Imperial/EndPage|Chassis_2|Cellulose}}

Latest revision as of 03:12, 30 October 2008


Project Summary

Design

In order to achieve our specifications of design, we require the following devices;

  • Light sensing device - Converting a light input into a PoPS output
  • Biomaterial production device - Converting a PoPS input into an output of biomaterial production
  • Motility Control device - Converting a PoPS input into an output of motility arrest
  • Integration device - To allow integration and selection of our genetic constructs and devices into B,subtilis


Each of these constructs makes up the final device which is shown below:

Genetic circuit.PNG

(AB is our antibiotic resistance cassette, ytvA is the gene controlling the light-sensing pathway, SB is the biomaterial, epsE the clutch and the 5' and 3' sections are integration sites. Light-inducible promoters are labelled with an 'L')


Modelling

The Dry Lab used computational simulations to explore the different properties of the Biofabricator. Our activities are summarized on this page. To find out more please visit the Dry Lab Hub.

Growth Curve

We have developed a simple model for the growth of B. subtilis where the rate of growth is related to the amount of nutrients available. To this purpose we have exploited the ideas put forward by last year's Imperial College iGEM team for their modelling of F2620 in a cell-free system.

Genetic Circuit

We have also built mathematical models for the time evolution of the basic genetic circuits that comprise our device. We have verified which model best describe the behaviour of the circuit better by using laboratory data.

Motility Analysis

Finally, we have carried out a detailed analysis of the swimming motility of B. subtilis, which led us, among other things, to develop a simple mechanical model for the swimming motility of B. subtilis. Using manual tracking, we were able to extract x,y coordinate data from the cell trajectory. This has allowed us to fit experimental data with our model. The data suggest that flagellar force of B. subtilis is Exponentially distributed.

All model simulations and motility data analysis were carried out with MATLAB. Cell tracking was done with ImageJ via the Manual Tracking Plugin. All our MATLAB files can be found in the Appendices section.

Motility Summary.jpg


Implementation

Following the design stage of our project we moved on to the implementation stage. This involved construction of a cloning strategy, construction of our biobricks and transformation and characterisation of these biobricks in B. subtilis. For more information on this aspect of the project please see the Wet Lab Hub.

Implementation.PNG

Testing

The testing and validation of our project can be split into three main areas;

  • Work with B. subtilis - Including characterisation of growth curves and transformation,
  • Extensive Characterisation of new B.subtilis biobricks, Chloramphenicol resistance gene and motility
  • Production of Biomaterials in B. subtilis

If you'd like to see more information on the key results from the testing and validation, you can find it on the Results Page.

Results
Result.PNG

Achievements

Here is a summary of the achievements of the Imperial College 2008 team:

  • Submitted 45 documented parts to the Registry
  • Characterized and improved the existing part BBa J31005 (chloramphenicol acetyl transferase, CAT)
  • Characterized the new promoter and ribosome binding sites biobricks BBa K143079 and BBa K143082 that we submitted this year.
  • Developed integration sequences for Biobricks, to allow devices to be constructed that can then be excised and planted into B. subtilis
  • Laid the groundwork for future teams to work with B. subtilis by BioBricking and characterising promoters, RBSs, integration sequences, coding sequences and complex devices
  • Showed that expansion into other organisms is a definite possibility!
  • Developed a method for tracking and analysing bacterial motility
  • Helped Bristol by sending them a mini-iGEM project: Chemotactic dot-to-dot with information on quorum sensing and directed movement
  • Helped Bristol by sending them part BBa_J37015 (AHL generator + GFP) from our 2006 stock which was an empty vector in the Registry
  • Helped Cambridge by sending them a plate of Synechocystis PCC680 and a genome preparation



Of course, that is a very simplified description of our project. We expanded upon our project by looking into possible areas for real-world applications. For a case-study of such an implementation, check out how our project fits in with >>> Biocouture >>>