Tag

Synthetic Biology

All articles tagged with #synthetic biology

Cell-Free Systems Accelerate Protein Engineering and Biosensor Development
biotechnology6 days ago

Cell-Free Systems Accelerate Protein Engineering and Biosensor Development

Scientists are increasingly bypassing living cells to synthesize proteins and create biosensors using cell-free transcription and translation systems. By extracting cellular machinery from organisms like E. coli or plants, researchers can accelerate the design-build-test cycle from weeks to hours, enabling the production of toxic compounds and the rapid iteration of sensors for contaminants like lead and copper. While these systems offer high customizability and avoid the risks of releasing genetically modified organisms, they face significant challenges regarding cost, energy depletion, and scalability compared to traditional cell-based methods.

Shotgun genetic engineering enables high-throughput metabolic design in mammalian cells
science-and-technology6 days ago

Shotgun genetic engineering enables high-throughput metabolic design in mammalian cells

Researchers developed shotgun genetic engineering (SGE) to overcome the combinatorial complexity of metabolic engineering in mammalian cells. By delivering barcoded, small DNA constructs into millions of cells simultaneously, SGE allows each cell to act as an independent experiment. This approach successfully engineered essential amino acid biosynthesis in Chinese hamster ovary (CHO) and Jurkat cells, achieving near-wild-type growth rates without valine or isoleucine. The method identified optimal mitochondrial localization and gene stoichiometry, outperforming previous rational design strategies and generating data for machine learning models.

Google's SynthID Bio Embeds Invisible Watermarks in AI-Designed Proteins to Boost Biosecurity
technology9 days ago

Google's SynthID Bio Embeds Invisible Watermarks in AI-Designed Proteins to Boost Biosecurity

Google DeepMind has introduced SynthID Bio, a new technology that embeds imperceptible watermarks into AI-generated protein sequences and 3D structures. Published in Nature on September 30, 2026, the system aims to verify the provenance of synthetic biological designs without compromising their biological function. By integrating with tools like ProteinMPNN and AlphaFold 3, SynthID Bio allows DNA synthesis providers to distinguish trusted AI designs from potentially hazardous unknowns, enhancing biosecurity and scientific integrity.

Engineered Bacteria Deliver Prophylactic Phage Defense Against Salmonella in Mice
science-and-health26 days ago

Engineered Bacteria Deliver Prophylactic Phage Defense Against Salmonella in Mice

Researchers have developed a new prophylactic strategy using engineered non-pathogenic E. coli to produce lytic phages that prevent Salmonella enterica Typhimurium (STm) infection in mice. By establishing high concentrations of phage in the gut before exposure, this 'prophage therapy' overcomes the limitations of traditional post-infection phage treatments, significantly improving survival and reducing bacterial colonization in colitis models.

Chinese Researchers Develop 'Smart' Probiotic for Real-Time Diabetes Control
science-and-health29 days ago

Chinese Researchers Develop 'Smart' Probiotic for Real-Time Diabetes Control

A research team from East China Normal University has developed an engineered probiotic, dubbed GIFT, that acts as a 'living drug' for diabetes management. Published in Nature on August 12, the study details how these bacteria, when taken orally, colonize the intestine and monitor blood glucose levels in real-time. If glucose spikes, the bacteria autonomously release the hormone GLP-1 to lower it, remaining inactive when levels are normal. This approach aims to replace fixed-dose medications with a responsive system. The therapy has shown efficacy in mice and non-human primates, improving lipid profiles and reducing complications, with human clinical trials planned soon.

Eight-letter DNA gets read by a bacterial enzyme, doubling the genetic alphabet in the lab
science1 month ago

Eight-letter DNA gets read by a bacterial enzyme, doubling the genetic alphabet in the lab

Researchers at UC San Diego showed a naturally occurring bacterial polymerase can accurately read and transcribe DNA containing four natural bases plus four synthetic ones, effectively doubling the genetic alphabet. While demonstrated in vitro, this proof-of-principle expands possibilities for synthetic biology, medicine, and data storage, though adapting the system to living cells will require addressing compatibility and safety challenges.

Two genetic codes run in parallel, opening new frontiers in synthetic biology
science1 month ago

Two genetic codes run in parallel, opening new frontiers in synthetic biology

Researchers led by George Church demonstrate a cell‑free system where two distinct genetic codes operate in parallel, using separate ribosome–tRNA pairs to translate the same mRNA into different proteins. This bypasses the need to rewrite an organism’s entire genome and could accelerate synthetic biology, though it hasn’t been tested in living cells and could cause unintended protein misfolding or cell death if attempted in vivo.

MOSAIC: a scalable self-assembly method for high-throughput gene synthesis
technology1 month ago

MOSAIC: a scalable self-assembly method for high-throughput gene synthesis

Researchers introduced MOSAIC, a self-assembly–driven method for high-throughput DNA fragment synthesis that couples orthogonal in vitro assembly of overlapping oligos with in vivo DNA repair, enabling 1,000+ gene fragments to be produced in one-pot, with near-zero misalignment. Using microchip-based oligo synthesis, MOSAIC can assemble fragments up to several kilobases, build massive variant libraries (e.g., PETase), and recover dozens of error-free genes after targeted sequencing; the work includes open-source code on GitHub and NGS data in NCBI and suggests a scalable route to close the DNA-synthesis bottleneck in synthetic biology.

Programmable DNA origami nanosyringe enables controlled membrane piercing and cargo delivery
technology2 months ago

Programmable DNA origami nanosyringe enables controlled membrane piercing and cargo delivery

Researchers report a programmable DNA origami nanosyringe (DOS) that anchors to membranes via a cholesterol base and uses DNA-fuel–driven sliding of a needle to puncture and reseal lipid bilayers, enabling on-demand, cargo-specific translocation: small molecules diffuse through the needle channels, while cargo tethered to the needle tip can be actively transported. In synthetic cells, the DOS triggers membrane-localized reactions such as hybridization chain reactions, RNA transcription, and catalytic RNA cleavage, demonstrating a modular platform for membrane-based control of biochemical processes.

AI designs complete viral genomes, sparking biosafety concerns
technology2 months ago

AI designs complete viral genomes, sparking biosafety concerns

Stanford researchers used AI models Evo1 and Evo2 to design complete bacteriophage genomes capable of infecting E. coli, producing 16 viable designs—the first time AI designed entire viral genomes. The work could advance treatments for antibiotic-resistant infections, but it raises urgent biosafety and biosecurity questions about creating new life and potential misuse; researchers say they excluded viruses that infect complex organisms, held experiments in secure labs, and stress safeguards, while experts warn of risks including possible autonomous misbehavior by AI systems.

science2 months ago

AI designs complete viral genomes, sparking therapy promise and biosafety concerns

Researchers used AI to design complete bacteriophage genomes, selecting 302 designs and confirming 16 that kill E. coli in the lab; this marks the first time a complete viral genome was designed by AI and could accelerate phage therapy and drug development, but raises urgent biosafety and biosecurity concerns that require safeguards.

AI Designs First Synthetic Viruses, Raising Biosafety Stakes
science2 months ago

AI Designs First Synthetic Viruses, Raising Biosafety Stakes

Stanford researchers used Evo 2, a generative AI, to design and synthesize 16 bacteriophages that kill E. coli more effectively than the natural ΦX174. Evo 2 is open-source, enabling others to design new genomes, but the work was done with a non-pathogenic strain in a secure lab; experts caution that governance and biosafety measures must keep pace as the technology could extend to larger organisms and broader biothreat concerns.

SpudCell exposes how close we are to synthetic life—and how far we still are
science3 months ago

SpudCell exposes how close we are to synthetic life—and how far we still are

Scientists announced on July 2, 2026 that they created SpudCell, the first synthetic cell built from purified, nonliving components. While it can feed, grow, replicate genetic material and undergo a cell-like division, it is not autonomous: it relies on laboratory conditions and ongoing input of molecular machinery, and it cannot reproduce indefinitely. The milestone helps researchers study core cellular processes—membranes, gene expression, energy use, and growth—while offering potential safe, simplified platforms for disease research, drug delivery, and environmental sensing. It also highlights ongoing debates about what constitutes life, and underscores the need for safety, governance, and ethical oversight in synthetic biology.