Warwick_Championship presentation
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Transcript of Warwick_Championship presentation
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Sponsors
ACKNOWLEDGEMENTS:-Sian Davies (Advisor)-William Rostain (Advisor)-Alfonso Rosales-Jaramillo (Supervisor)
-Support of the staff and technicians of Warwick Life Sciences in particular the mammalian group of David Evans -Leo Vong-Chelsey Tye
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HASSAN (MATHS) IVA (ENGINEERING) CHRIS (PHYSICS) BECKY (BIOMED)
WAQ (BIOLOGY) CARRIE (BIOMED) DAN (MATHS) BEN (MATHS)
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Wellcome trust Sanger Institute
CDC: cdc.gov/diabetes/pubs/factsheet11.html
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Dipeptidyl Peptidase IV (DPP-IV) inhibitors
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Efficacy
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Cost
0
2
4
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12
Inhibtor 1 Inhibitor 2 Inhibitor 3
Pri
ce p
er t
able
t ($
)Price per Tablet ($)
Inhibitor 1
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Dic
er
RISC
1. Slicing
2. Unwinds3. Complimentary annealing
Target mRNA (3’UTR of DPP-IV)
RISC4. Slicing
Interfering RNA Treatment
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T7
5’ 3’
IN VITRO TRANSCRIPTION
RNA dependent RNA polymerase (RdRp)
3’ 5’
POSITIVE STRAND RNA
NEGATIVE STRAND RNA
5’ 3’POSITIVE STRAND RNA
REVERSE TRANSCRIPTION
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3’ RNA PROMOTER
MS2 Repressor System
MS2 coat P2A RdRp
MS2 coat protein
RdRp
MS2 BOX
IRES
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Aptazyme
• THEOPHYLLINE CHEMOSENSOR
• SELF-CLEAVING RIBOZYME
SWITCH
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siRNA Engineering
DICERDICER
BIOLOGICAL DIODE
NEGATIVE SENSE RNA POSITIVE SENSE RNA
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Promoter
Repressor
Selectivity Marker
Translational Apparatus
Kill Switch
Replication System
Active Element
The RNA Construct
Promoter
5’ RNA promoter
3’ RNA promoter
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Split Neomycin Selectivity Used in selectivity for co-transformants when testing the siRNA and aptazyme in a separate module to RdRp.
Schmidt, C., Shis, D., Nguyen-Huu, T. and Bennett, M. (2012). Stable Maintenance of Multiple Plasmids in E. coli Using a Single Selective Marker.
AND LOGIC GATE
Kanamycin resistance in prokaryotes and genticin resistance in eukaryotes
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Testing the Replication systemRNA DEPENDENT RNA POLYMERASE
BL21 E. coliCELLS
RBS +RdRp
RBS + reverse GFP + 3’ RNA Promoter
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RdRp Results
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3500
RdRP induced Negative ControlRdRP not induced
Negative Controlmutant RdRP induced
GFP
Flu
ore
sce
nce
RdRp Activity in E.coli BL21 at O.D. 0.2
FLU
OR
ESC
ENC
E (A
.U.)
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Internal Ribosome Entry Site Testing EMCV vs NKRF
0
200
400
600
800
1000
1200
1400
1600
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EMCV Huh EMCV Hela NKRF Huh NKRF Hela Negative CntrlHuh
Negative CntrlHeLa
Flu
ore
scen
ce (
A.U
.)
Comparison of efficacy of EMCV and NKRF IRES with controls
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Aptazyme
IN VITRO FZ Huh no theo
IN VIVO
FZ Huh + theo FZ HeLa no theo FZ HeLa + theo
0mM4mM
20mM 100mM
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-RNA degradation
+RNA production
-RNA production
-RNA production
MS2 Translation
+RNA
MS2
-RNA
siRNAdegradation
RISC Complex degradation
siRNA
RISC Binding
RISC Complex
DICER action
MS2 Binding
+RNA degradation
MS2 degradation MS2-RNA
Complex
MS2-RNA Complex Degradation
RNA Annealing
dsRNA
dsRNAdegradation
RdRp Translation
RdRp
RdRp Degradation
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Further Modelling Developments
The time delay differential equations for our 3’RNA promoter experiment, solved numerically (in red) and stochastically (in blue, averaging 100 repeats) with the solver we created
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Toolbox
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Policy & Practices
SURVEY · BIOWEAPONS · PROJECT-SPECIFIC CHANGES · OUTREACH
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Survey
Word of Mouth
The Internet
Other iGEM Teams
Viral Methods
#323
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Intellectual Property IIf someone modifies an organism or cell such that it now has a new
function, do you believe that the person has right to claim ownership of this modified organism?
‘No one has the right to life’
‘Modifying cells/organisms in a particular way is its own unique work that should be as copyrightable as any
other invention’
YES48%NO
52%
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Intellectual Property IIIf someone modifies human cells, or maybe even a human, to have a new/modified function, can that person claim ownership of these
human cells/human?
‘Ownership should only extend to the copyright over the modified segments of
genetic code. The organism itself, however, is under it's own ownership if it has sentience.’
‘Technically yes. Obviously you would pay to have a modification done on you. You're paying for both a service and a product. The "product" used to belong them, so technically they were the previous owners; but once someone buys
them, they are the new owners.’’
YES13%
NO87%
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Associated DangersDo you believe Synthetic Biology is a dangerous tool, knowing that
potentially dangerous organisms are being dealt with?
‘Synthetic biology is a double edged sword. It has equally well advantages and disadvantages. As responsible scientists/policy makers, we need
to make sure that the technology is not being used to threaten life.’
YES30%
NO45%
OTHER25%
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Confidence in SynBioWould you be happy taking medicine that is derived using bacteria
and viruses which have been selectively modified to serve as a cure for a particular illness?
YES94%
NO6%
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BioweaponsMerriam-Webster definition: a harmful biological agent (as a
pathogenic microorganism or a neurotoxin) used as a weapon to cause death or disease usually on a large scale
Problem 1: using a malicious siRNAsequence
Problem 2: exploiting self-replication to promote a hazardous toxin
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Outreach
Lucie’s testimony: It gave me a new appreciation for all areas of the research
and the intricacies of carrying it out.’
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Outreach
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The World of RNA