Presentation is loading. Please wait.

Presentation is loading. Please wait.

“So you’ve made a synthetic cell….” 2011.

Similar presentations


Presentation on theme: "“So you’ve made a synthetic cell….” 2011."— Presentation transcript:

1 “So you’ve made a synthetic cell….” Summer@Brown 2011

2 Who has heard of….. The Minimal Cell?

3 The Minimal Cell is … Recipient cell: M. capricolum Genome: M. mycoides JCVI-syn1.0 First synthetic self-replicative cell (May 2010) Mother: computer Function of every gene is known (1.8 Mbp) 15 years 24 scientists ~$40 million Chassis for biological devices

4 A Living Factory! What is synthetic biology?

5 Design Hierarchies

6 Arteminisin Project: Anti-malaria drug BioFene: biofuels Terraforming Research: NASA Sensors Bioremediation Applications

7 According to the World Health Organization, each year nearly 500 million people become infected with malaria, and nearly 3 million — mostly children — die from it. Malaria Crisis

8 Drug produced from plant (14 month cycle): $2.40/dose Drug produced from microbe (14 days): $0.25/dose Savings: $2.15/dose X 500 million doses = $1 Billion Arteminisin

9

10 Will technology follow through on promise? Contract with Sanofi-Aventis to begin distribution of arteminisin therapeutic in 2012 What’s next?

11 Living Factories

12 Farnesene – BioFene BioFene: Biofuels

13 $600 million deal – Exxon and J. Craig Venter Institute – Synthetic algae to output biofuel Biofuels

14 Terra-forming Research

15 Green aviation and biofuels Develop new technologies to provide: – Food – Medicine – Life support Emerging technologies?

16 The Past: We took familiar biological organisms into space, and engineered environments to suit them. The Future: We will engineer biological systems to make them suited to extraterrestrial environments, and employ these systems in new kinds of missions.

17 Job Opportunities

18 Analogies

19 Review: Molecular Biology

20 Biopolymer, a long chain of small units (A,C,T,G) Double-stranded Complementary strands DNA: Molecule of Life

21 DNA RNA Protein Replication Transcription Translation Central Dogma of Biology

22 A gene is a region of DNA, corresponding to a unit of inheritance. DNA Protein Many genes produce proteins. RNA Ribosome Binding Site Gene Y Promoter Ribosome Binding Site Gene Y Y Y Transcription Translation Gene Transcription

23 Some genes have the ability to regulate other genes. When placed in the same organism, these genes interact with one another to form a gene network. Gene YGene XGene Z Note that, as pictured, this network has a feedback loop Gene Transcription

24 Activation When one gene or factor induces creation of more of another gene, denoted with an arrow (  ) connecting the two Gene YGene X Gene X is transcribed Repression When one gene or factor prohibits creation of another gene, denoted with a perpendicular symbol (--|) connecting the two Gene YGene X Gene X is not transcribed Gene Transcription

25 Genome Network Project, Nature Genetics, 2009

26 Engineering with Synthetic Biology

27 Develop initial scheme for a gene network Test smaller circuits in the network Create mathematical model to understand theoretical behavior Rational Design

28 If indicated, modify theory based upon experimental results Construct and test larger network As with other engineering disciplines, this process requires standardization, modularity, and modeling Tweak as needed/desired Rational Design

29 US Standard Screw Thread “In this country, no organized attempt has as yet been made to establish any system, each manufacturer having adopted whatever his judgment may have dictated as best, or as most convenient for himself” – William Sellers, Franklin Institute, April 21, 1864 Standardization

30 http://partsregistry.org/Main_Page Standard Registry

31

32

33

34

35 Enabled by standardization Swap interchangeable parts or units in a particular category to achieve new function Groups of parts define a unique functional unit New unit, new function Modularity

36 Analogy: Upgrading the processor on your computer - All other parts of the computer remain the same, but the computer functions differently. Example: Modular promoters Gene Y Higher output of Y Lower output of Y Promoter 1 Promoter 2 Modularity

37 D Y Z β δ ρ ϒ degradation Β= rate of mRNA transcription γY= rate of mRNA degradation δ= rate of protein translation ρZ= rate of protein degradation Modeling of Genetic Networks

38 Same thing for translation….. Model Transcription

39 Manipulating DNA to engineer organisms

40 Tools of the trade: Plasmids Antibiotic Selection Marker -used to select bacteria containing gene of interest Promoter -enables controlled expression of gene Gene -encodes protein of interest Multiple Cloning Sites -allows other genes to be introduced into the plasmid Units of DNA for controlled transfer of genes between organisms

41 Bacteria expressing green fluorescent protein from jelly fish

42 DNA Scissors: Restriction Enzymes GENE EcoRI XbaI SpeI PstI Vector Plasmid

43 GENE A EcoRI XbaI SpeI PstI GENE B EcoRI XbaI SpeI PstI Mixed SpeI/XbalI Site XbaISpeI GENE A SpeI PstI GENE B EcoRI XbaISpeI/Xbal

44 GENE A SpeI PstI GENE B EcoRI XbaISpeI/X bal Plasmid

45 Visualizing DNA: Agarose Gel 3.0 kbp 1.0 254 bp = MCS No Gene Insert 969 bp = GFP Gene Inserted 2.0 1.5 Individual Bacterial Colonies

46 http://ung.igem.org/Main_Page International Genetically Engineered Machine competition (for undergraduates) Given a kit of biological parts Goal: design and build new biological systems and operate them in living cells

47 Examples of Ideas BactoBlood, UC Berkeley, 2007 – Develop cost-effective RBC substitute to safely transport O 2 in the bloodstream without inducing sepsis E. Chromi, Cambridge, 2009 – Engineer bacteria to produce different pigments in response to different concentrations of inducer

48 Participation Statisitics

49 Where is iGEM?

50 http://biomod.net International Bio-molecular Design Competition Focus areas: biomolecular robotics, biomolecular logic and computing and structural bionanotechnology

51 DNA Origami Link DNA structures bend with radius of 6 nm Nano-car? Nanoantennae? Nanoscale circuits for drug delivery vehicles?

52 Lab 1: Strawberries & DNA

53 All you wanted to know about….Strawberries Fruit of the Fragaria – genus of flowering plants from rose family An “octoploid” = 8 complete sets of chromosome in a single cell Contains fiestin – an antioxidant linked to prevention of Alzheimer’s Genome sequenced (2011): 240 million bp of DNA


Download ppt "“So you’ve made a synthetic cell….” 2011."

Similar presentations


Ads by Google