AI-designed DNA Controls Genes in Mammalian Cells For the First Time

    A study carried out at the Centre for Genomic Regulation(CGR) in Barcelona, had recently discovered the first reported instance of generative AI designing synthetic molecules that can successfully control gene expression in healthy mammalian cells. The model can be told to create synthetic fragments of DNA with custom criteria, and then predict which combination of nucleotides (A, T, C, G) are needed for the gene expression patterns required in specific types of cells. Researchers then chemically synthesized roughly 250 nucleotide DNA fragments and then add them to a virus, which will then carry the modified DNA into a desired cell. 

    For proof that the AI modification was successful, researchers asked the AI to design synthetic fragments that activate a gene coding for a fluorescent protein in certain cells while leaving other gene expression patterns untouched. They created the desired fragments from scratch and transferred them into a mouse's genome, where the modified sequence fused with the mouse's genome in random places. The results of this study could be used to find new ways for gene therapy developers to boost or weaken the activity of genes in certain cells or tissues. This use of AI can also be used to find alter a person's genes and make treatments more effective and reduce side effects. This concept hasn't been tested yet, but researchers intend to start investigating this soon. AI-generated enhancers can help engineer ultra-selective switches that can be designed to have specific on/off patterns required in specific types of cells. A level of accuracy which is crucial for creating therapies that avoid unintended effects in healthy cells.

Illuminating the Garden: The Enchanting Science Behind the Firefly Petunia

 

Dr. Keith Wood has dedicated his career to pharmaceutical research, specializing in molecular and chemical biology and studying the interactions between bioluminescence and diseases. His journey began with a graduate project that involved the insertion of a firefly gene into a tobacco plant to study organism pathways. Although the result was a glowing plant, it was not commercially viable. Decades later, Wood and his company, Light Bio in Ketchum, have developed and are now marketing a genetically modified garden petunia named the Firefly Petunia that glows in the dark. The plant incorporates four genes from a bioluminescent mushroom and a fifth from fungi, creating a self-sustaining cycle that allows the plant to glow without additional chemicals. The development and approval process took about ten years, with the U.S. Department of Agriculture giving the green light last fall. The Firefly Petunia is now on sale, attracting attention for its novelty and the joy it brings, rather than its scientific implications.

For me, it is remarkable how the field of bioluminescence, initially explored for its potential to comprehend disease pathways and molecular interactions, has now produced something as delightful and captivating as a luminous petunia.