Revision as of 19:23, 15 August 2014

Project Description

Problem Statement

Synthetic genetic circuits created by synthetic biologists have yielded exciting applications such as biofuels production and cancer killing bacteria. These circuits are often difficult to engineer, requiring months to design, build, and test each individual genetic device involved in the circuit. Although there are many genetic devices that have been built, re-using these devices often requires a time-consuming review of the literature. The UCSD Software iGEM team will address this challenge by creating a web-tool that leverages existing genetic devices to create complex genetic circuits. We will accomplish this by:

building a comprehensive database that captures the behavior, composition, and interactions of existing genetic devices in the literature
constructing and visualizing the network of all synthetic genetic circuits that can interact with one another
devising algorithms to search this network for the set of genetic devices that can be used to construct a complex genetic circuit.
Perform some basic validation via kinetic modelling.

Aim 1 - Building a Database

We will mine the scientific literature for existing genetic devices and then construct a database that captures device characteristics such as:

composition of devices

function

characterization data

literature reference

We will design our database by rigorously constructing an entity relationship diagram and then normalizing these relationships to construct tables for a relational database.

Aim 2 - Constructing Network of Interacting Devices

We will connect known genetic devices together via device input and outputs to create a network of devices that can interact. We define a genetic device as a DNA construct transformed into cells that can cause expression of some protein in response to stimuli (or input). We will develop a web interface to facilitate access to the complex network that we have constructed. Our Web interface makes extensive use of Cytoscape, an open source bioinformatics software package for metabolic network visualization and simulation. In addition, the interface will generate SBOL Visual Images, a standard language that is easily understood by synthetic biologists all over the world. Users can also update our database with additional devices through this interface. Using the Cynetshare framework, users can share their circuit designs

Aim 3 - Searching the Network

This interface will allow researchers to query our database network for a circuit design expressed as logical operators such as “AND”, “OR”, and “NOR”, and retrieve the subnetwork of genetic devices that satisfies the circuit design. To Perform our search we modified several traditional graph search algorithms to traverse this graph, including but not limited to Prim’s algorithm (minimum spanning tree), Dijkstra’s algorithm and a breadth-first search. Results are visualized graphically in our web interface

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@@ Line 12: / Line 12: @@
 <li>constructing and visualizing the network of all synthetic genetic circuits that can interact with one another</li>
 <li>devising algorithms to search this network for the set of genetic devices that can be used to construct a complex genetic circuit.</li>
+<li>Perform some basic validation via kinetic modelling.</li>
 </ol>
 <h3>Aim 1 - Building a Database</h3>

Team:UCSD Software

From 2014.igem.org