Stranded Technologies Podcast · Infinita City

Ep. 105: Andrew Hessel: Programming DNA and Engineering the Future of Life

·1 hr 6 min·4 clips

RNA can transiently reprogram cells, while CRISPR can make a permanent search-and-replace in DNA.

1. Stranded Technologies Podcast frames Andrew Hessel’s discussion of programming DNA and engineering life. 2. Nick introduces Andrew Hessel as a synthetic biology pioneer, futurist, microbiologist, geneticist, inventor, and serial entrepreneur. 3. The episode asks what life is, how DNA works, and what synthetic biology can already read, write, and change. 4. Hessel calls life “near magical chemistry” and says biophysics is harder to model than everyday physics. 5. He says molecular motion at the nanoscale is dynamic and that researchers still lack a virtual simulator that behaves like the natural world. 6. Hessel describes his own path from taking apart radios, toys, and cars to switching into biology after a “voice in my head.” 7. In microbiology 101, swabs from the mouth, skin, and fridge produced visible microbial growth on Petri dishes, which he says hooked him. 8. He says that moment made him see single-celled organisms as molecular processors with an operating system written in DNA. 9. Hessel traces sequencing from the 1980s, when radioactive isotopes and large acrylamide gels were used, to fluorescent and automated systems in the late 1990s. 10. He says modern nanopore sequencers from Oxford Nanopore use a “protein donut” that reads DNA by measuring current as strands pass through. 11. He notes that GenBank now contains about 44 trillion base pairs and that the Human Genome Project launched in 1990 with a roughly $3 billion budget. 12. Hessel says genome reading functions as a “digital microscope” for diagnosing disease and comparing healthy and diseased states. 13. He argues that DNA is digital and uses four letters, A, T, G, and C, which makes it a compact base-four language. 14. He compares DNA to executable code that cells run and says AI tools are becoming better at reverse-compiling that language. 15. Hessel says most organisms share conserved biochemistry, so code from one species can be moved into another to express proteins. 16. He says biology is the only technology humans did not create because “it created us,” and that reverse engineering has been progressing for centuries. 17. Hessel says the ability to write DNA now reaches about 100,000 base pairs commercially, while a minimal free-living cell needs about 500,000 base pairs. 18. He distinguishes RNA delivery, which makes transient protein production, from CRISPR, which can make a permanent search-and-replace edit in DNA. 19. The tone is technical, explanatory, and conversational, with Nick pressing for basic definitions and Hessel answering in concrete engineering terms. 20. People interested in synthetic biology, genomics, and gene editing will get the most from this episode. 21. People wanting entertainment-first conversation or light science will probably skip it.

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