The ability to precisely control gene expression is fundamental to advancing biotechnology and medicine, yet designing functional synthetic promoters for eukaryotic cells remains a complex challenge. UC Berkeley researchers have developed a high-throughput platform for the generation and selection of synthetic transcriptional promoters. This technology utilizes expansive libraries of recombinant expression vectors to identify promoter sequences with optimized performance characteristics. By linking promoter sequence to measurable expression outputs, the method allows for the rapid discovery of highly functional, custom-tuned regulatory elements that are compatible with a variety of eukaryotic host systems.

As global plastic pollution intensifies, the accumulation of microplastics from partial degradation remains a critical environmental threat. To address this, researchers at UC Berkeley have developed a system for the programmable and complete depolymerization of polyesters. By incorporating a nanoscopic dispersion of enzymes directly into the plastic matrix, the technology exploits specific enzyme active sites and enzyme-protectant interactions to ensure processive degradation. This method ensures that the polymer is broken down entirely into its constituent monomers, preventing the formation of persistent microplastics that typically result from traditional degradation processes.

Traditional covalent semiconductor systems, while effective, require energy-intensive and costly synthetic methods for device fabrication. To address these processing challenges, researchers at UC Berkeley have developed a stable, ligand-free zero-dimensional (0D) perovskite semiconductor ink. This ink is composed of vacancy-ordered double perovskite powders (A_2BX_6) dissolved in polar aprotic solvents like dimethyl sulfoxide (DMSO) or N,N-dimethylformamide (DMF). The process stabilizes isolated [BX_6]^{2-} octahedral anions and free A+ cations in solution without the need for organic ligands. These multi-functional inks remain stable for over a year and can be easily patterned onto various substrates—including glass and silicon—where they rapidly recrystallize into the A_2BX_6 phase upon drying.

This drug discovery platform focuses on identifying and developing covalent molecular glue stabilizers specifically designed to target 14-3-3 proteins. Researchers at UC Berkeley have engineered this system to discover small molecules that create a permanent, covalent bond between 14-3-3 adapter proteins and various disease-relevant targets. By stabilizing these protein-protein interactions (PPIs), the platform enables the sequestration and functional inhibition of proteins that are typically considered "undruggable" due to a lack of traditional binding pockets. This approach exploits the extensive regulatory network of 14-3-3 proteins, which interact with hundreds of signaling partners, to provide a modular strategy for therapeutic intervention across a wide range of human diseases.

Traditional ring-shaped nanostructures are vital for manipulating electromagnetic waves, yet they remain difficult to integrate into scalable devices due to the limitations of standard nanofabrication techniques. UC Berkeley researchers have developed a straightforward approach to generate ring-shaped nanoparticle assemblies in thin films using supramolecular nanocomposites. By employing directed self-assembly (DSA), the system guides the formation of concentric rings with precise radii ranging from 150 to 1150 nm and widths between 30 and 60 nm. When plasmonic nanoparticles are utilized, these completed nanodevice arrays can be fabricated in a single step, producing high-quality orbital angular momentum (OAM). Unlike traditional methods that rely on polymer-pattern incommensurability, this supramolecular system self-regulates the spatial distribution of its components, providing a level of flexibility and material selection previously unavailable in block copolymer DSA.

The efficient delivery of protein-based therapeutics into the cytosol is a significant hurdle in drug development, as most internalized proteins remain trapped and degraded within endosomal compartments. To address this challenge, UC Berkeley researchers have identified a set of biophysical "design rules" that promote the successful escape of proteins from these vesicles. The researchers found that selecting or engineering proteins with high intrinsic disorder or a specific thermal stability (T_m)—specifically the tendency to unfold at physiological temperatures—greatly enhances their ability to penetrate the endosomal membrane. This discovery provides a rational engineering framework for creating next-generation intracellular biologics, including enzymes and gene-editing tools, that can effectively reach their target sites within the cell.

Researchers at the University of California, Davis have developed a photonic device that generates unique, unclonable cryptographic keys using light scattering and advanced photodetection for enhanced hardware security.

Prof. Changcheng Zhou and colleagues from the University of California, Riverside (UCR) have developed an antisense oligonucleotide to knockdown tsRNA-Glu-CTC, which is an abundant tsRNA in the liver and a critical regulator of cholesterol homeostasis. This specific tsRNA is cholesterol responsive and interacts with the master lipid regulator SREBP2. In vivo studies in mice demonstrated that the treatment reduces hypercholesterolemia and hepatic steatosis (fatty liver) in mice fed a high-cholesterol diet. This treatment is advantageous because it may open new therapeutic avenues for cardiometabolic conditions and liver disease.