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Genetically Engineered Mycelium for
Biomaterials Development
By Arun Chakravorty and Eric Holmes
• International Genetically Engineered
Machines
• Standardization of genetic parts using
“BioBricks”
• Development and expansion of genetic
parts registry
• Annual competitions in October and
November
• Developed collaboration
with Ecovative.
• Company that creates
Styrofoam substitute using
fungal mycelium
• Hope to use synthetic
biology to improve
marketability
Chassis
• Ganoderma
lucidum
• Higher order
basidiomycete
• Sequenced in 2012
• Reported to have
medicinal
properties
Goals
• Improve product via introduction of several
biological plasmid constructs.
• Antifungal constructs to eliminate
fungal contaminants
o Provide fungal species
opportunity to outcompete
fungal contaminants
• Carotenoid pigment pathways to make
product more appealing
• Develop fungal toolkit
Homologous Recombination
• Integrate linearized plasmids via natural
homologous recombination
Figure from Gene Bridges
Gibson Assembly
• Used for cloning in genes
with internal cut sites
• Uses polymerase,
5’ exonuclease, and
ligase in simultaneous
reaction
Photo from Integrated
DNA Technologies
Constructs
Site-Directed Mutagenesis
• Introduce silent mutations
• Used on genes with internal restriction sites
Image from Agilent Technologies
Thermal
Cycling
DpnI
Digestion
Transformation
Promoter Problems
• Fungal promoters are very long
o E.coli has a check system where it splices
out potential duplications
• Very few identified Ganoderma promoters
• Potential solution: use T7 bacteriophage
promoter/polymerase
Image credit: Thomas Splettstoesser
Constructs
Acknowledgments
• Weill Institute
• Cornell Institute for
Biotechnology & Life
Sciences Technology
• College of Engineering
• Turgeon Lab
• Corning
• Geneious
• The entire Cornell iGEM
team
Thank you for listening!

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SILS Presentation

  • 1. Genetically Engineered Mycelium for Biomaterials Development By Arun Chakravorty and Eric Holmes
  • 2. • International Genetically Engineered Machines • Standardization of genetic parts using “BioBricks” • Development and expansion of genetic parts registry • Annual competitions in October and November
  • 3. • Developed collaboration with Ecovative. • Company that creates Styrofoam substitute using fungal mycelium • Hope to use synthetic biology to improve marketability
  • 4. Chassis • Ganoderma lucidum • Higher order basidiomycete • Sequenced in 2012 • Reported to have medicinal properties
  • 5. Goals • Improve product via introduction of several biological plasmid constructs. • Antifungal constructs to eliminate fungal contaminants o Provide fungal species opportunity to outcompete fungal contaminants • Carotenoid pigment pathways to make product more appealing • Develop fungal toolkit
  • 6. Homologous Recombination • Integrate linearized plasmids via natural homologous recombination Figure from Gene Bridges
  • 7. Gibson Assembly • Used for cloning in genes with internal cut sites • Uses polymerase, 5’ exonuclease, and ligase in simultaneous reaction Photo from Integrated DNA Technologies
  • 9. Site-Directed Mutagenesis • Introduce silent mutations • Used on genes with internal restriction sites Image from Agilent Technologies Thermal Cycling DpnI Digestion Transformation
  • 10.
  • 11. Promoter Problems • Fungal promoters are very long o E.coli has a check system where it splices out potential duplications • Very few identified Ganoderma promoters • Potential solution: use T7 bacteriophage promoter/polymerase Image credit: Thomas Splettstoesser
  • 13. Acknowledgments • Weill Institute • Cornell Institute for Biotechnology & Life Sciences Technology • College of Engineering • Turgeon Lab • Corning • Geneious • The entire Cornell iGEM team
  • 14. Thank you for listening!

Editor's Notes

  1. Things to say: Talk about what a “biobrick” is and how it helps standardize. All biobricks are submitted to the registry. Regional and international competitions
  2. Talk a little bit about how they grow the material to get a better idea of how contamination occurs.
  3. Carotenoid pathway: DMAP dimethylaminopyridine is primary metabolite