All articles tagged with #synthetic biology
Researchers at the University of Waterloo are developing engineered Clostridium sporogenes that can colonize the oxygen-poor core of solid tumors and survive near the tumor’s outer layers by a quorum-sensing–controlled oxygen-tolerance gene, enabling tumor consumption from inside with GFP-based validation and plans for preclinical tumor testing.
Scientists resurrect dead Mycoplasma capricolum cells by swapping their nonfunctional DNA for a working genome from Mycoplasma mycoides, creating 'zombie cells' after inactivating recipients with mitomycin C; reported on bioRxiv, the method reduces false positives and marks a step forward in genome transplantation and synthetic biology with potential to test engineered genomes across species.
Researchers rebuilt four ancient nitrogenase enzymes dating up to about 2.3 billion years ago and inserted them into Azotobacter vinelandii. All variants supported nitrogen fixation, though at slower rates than modern enzymes, and produced nitrogen-isotope fingerprints that match those seen in modern microbes and Archean rocks, implying an earlier origin for Mo-nitrogenase. The work offers new ways to study Earth's early biology and could inform future agricultural and exobiology research.
Engineers at the University of Edinburgh used engineered E. coli to break down PET plastic waste into L-DOPA, the main drug for Parkinson’s, creating a sustainable upcycling pathway from discarded bottles and signaling potential expansion to other products, with work now focusing on industrial scalability and environmental performance.
Researchers at the University of Waterloo engineered the soil bacterium Clostridium sporogenes to colonize oxygen-poor solid tumors and consume nutrients, effectively attacking tumors from within. They added oxygen-tolerance tweaks and quorum-sensing controls, plus a fluorescent signal, to signal successful tumor disruption. While promising, the approach is still in preclinical stages with the goal of combining traits into a single bacterium for upcoming preclinical testing in humans.
Researchers at the University of Waterloo are engineering Clostridium sporogenes bacteria to invade oxygen-poor tumor cores and consume nutrients from inside, potentially destroying tumors. They added an oxygen-tolerance gene and use quorum sensing to activate it only after enough bacteria accumulate, limiting safety risks. Next steps combine both features in a single strain and test in preclinical trials, showcasing interdisciplinary synthetic-biology cancer research.
Researchers at Genyro used an AI system called Evo2 to design 285 new viruses from scratch, with Evo-Φ2147 created to kill antibiotic-resistant E. coli; the build relies on Sidewinder for genome assembly and could speed up creation of living genomes, vaccines, or personalised cancer therapies—while sparking concerns about AI-enabled biothreats and biosafety.
A new arXiv paper outlines a phased, testable plan to terraform Mars—starting with atmospheric warming and melting frozen reservoirs, then seeding engineered microbes to build Earth-like ecosystems—arguing advances in climate modeling, biotech, and cheap launches make it plausible, while underscoring ethical and scientific uncertainties about reversibility and potential microbial life.
Scientists are using AI to design entire genomes and to craft new viruses, signaling a post-Darwinian era where life can be authored. Stanford and Caltech demonstrations show AI-driven genome design (EvoΦ2147 and Evo2) and DNA-synthesis tools (Sidewinder) that could accelerate vaccines, cancer therapies, and other biotechnologies, while raising serious security, ethical, and governance concerns that require safeguards and policy frameworks.
Teenagers from Lambert High School in Georgia used CRISPR gene editing to develop a potential early detection and treatment method for Lyme disease, competing internationally at iGEM and achieving notable success, highlighting the importance of youth involvement in biotech innovation.
The article discusses the emerging field of writing genomes, highlighting projects like HGP-write and SynHG that aim to construct entire human genomes from scratch. This technological leap could revolutionize medicine, biology, and industry by enabling the creation of custom organisms and new therapies, but it also raises significant ethical and safety concerns that require responsible governance and global collaboration.
A researcher at the University of Minnesota and a group of scientists have raised concerns about the potential dangers of creating mirror cells, which are synthetic organisms with reversed biomolecular structures. While such cells could advance scientific understanding and medical research, experts warn they might pose significant ecological and health risks if released, leading to calls for strict regulations and ethical considerations to prevent potential existential threats.
Recent technological advances have shifted the debate on Mars terraforming from impossible to challenging, with proposals including warming the planet, creating liquid water, and introducing microbes to eventually establish a breathable atmosphere. Researchers emphasize the importance of careful research, ethical considerations, and understanding potential risks before attempting large-scale planetary transformation.
The article discusses the potential creation of mirror life, which involves synthetic biomolecules with opposite chirality to natural life, highlighting both the scientific possibilities and the significant risks, including ecological collapse and resistance to immune responses, while emphasizing the need for ongoing research and ethical debate.
Researchers demonstrated that AI can design functional viruses, raising concerns about potential misuse for bioweapons, and emphasizing the need for improved regulation, data sharing, and rapid response infrastructure to mitigate risks.