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A few years ago, at Arrakis Therapeutics, we set out to conquer a strange new territory, drugging RNA structures with smallmolecules. We have overcome many obstacles on this mission, inventing new concepts and methods where necessary and re-engineering known concepts and methods where possible.
The majority of smallmolecule drugs induce their therapeutic effects by seeking out and binding to their intended target while avoiding most other molecules in the dense milieu of the cell interior. Our overall mission at Arrakis is to expand the set of “druggable” targets for small-molecule medicines to include RNA.
This laid the groundwork for my career in drug discovery using novel modalities like smallmolecule inhibitors, antibodies, RNA interference (RNAi) and, currently, smallmolecule protein degraders – which are opportunities to change how we think about medicines.
On the other hand, if you have a platform designed to be an engine for a standalone enterprise, capable of generating dozens of future drugs, then you might plot a course that brings you into the close orbit of multiple complementary partners. We all share a common understanding of the benefits and challenges of smallmolecule therapeutics.
In the paper, researchers from Johns Hopkins University and elsewhere found a natural long-form transactivating CRISPR RNA (tracr-L) in Streptococcus pyogenes that functions to downregulate its endogenous CRISPR-Cas9 system. But altering the tracr-L with genetic engineering to make it function more like a guide RNA increased CRISPR-Cas9 cuts.
🧪 Papers AI + Bio Protein-specific signal peptides for mammalian vector engineering. Basic Science A trailing ribosome speeds up RNA polymerase at the expense of transcript fidelity via force and allostery. Biological Engineering Generation of functional oocytes from male mice in vitro. Metabolic Engineering.
Codon Digest is my weekly roundup of research, news, and industry highlights about engineered biology. An engineered version of this protein can convert DNA bases with efficiencies up to 92%. A particular variant, named IscB*-ωRNA*, had the highest editing efficiency across multiple different sites in the genome.
Codon Digest is my weekly roundup of research, news, and industry highlights about engineered biology. An engineered version of this protein can convert DNA bases with efficiencies up to 92%. A particular variant, named IscB*-ωRNA*, had the highest editing efficiency across multiple different sites in the genome.
DNA and RNAmolecules are also built from exclusively right-handed nucleic acids. Glucose is a chiral molecule because its structure allows for two distinct configurations, or enantiomers, which cannot be superimposed on each other. The mirrored enzyme seamlessly transcribed 2,900 bases of mirrored DNA into mirrored RNA.
This is Codon Digest, a weekly roundup of research papers, news articles, and industry highlights about engineered biology. Read Biological Engineering mScarlet3: a brilliant and fast-maturing red fluorescent protein. Read Prime editing is a tool to make small DNA insertions or deletions without cleaving the genome.
Most people, and in particular most investors we spoke to in those early days, thought we were nuts – that RNA lacked the structural and molecular complexity that medicinal chemistry exploits with such great effect for proteins. One is that molecular recognition is purely a matter of physics and RNA has to play by the same rules.
Their solution was to fuse hairpins, little loops made from RNA or DNA, at various positions along the DNA strand that was being sequenced. 3 Nanopore engineers decided to cleverly exploit the natural speed limit of DNA polymerase to slow down DNA translocation through the pores.
In the top row, human lung cancer cells were engineered to over-express GRP78 in the nucleus. Researchers from the Keck School of Medicine of USC used imaging techniques to study how the protein GRP78 controls cancer cell behavior. In the bottom row, cells lacked GRP78 in the nucleus.
Read more at Nature Biotechnology ( Similar paper at Nature Biomedical Engineering.) But now, their engineered brethren can live about 82 percent longer. Often, when we engineer a cell, we only mess with the magnitude of an effect; this study suggests that we should think more about the timing, too. From Zhang et al.
Read more at Nature Biotechnology ( Similar paper at Nature Biomedical Engineering.) But now, their engineered brethren can live about 82 percent longer. Often, when we engineer a cell, we only mess with the magnitude of an effect; this study suggests that we should think more about the timing, too. From Zhang et al.
Back in 2018, researchers tested a broad-spectrum antiviral candidate called remdesivir/VEKLURY, which acts as a nucleotide decoy to get incorporated into the viral RNA genome and stop viral polymerase. But targeting Ebola virus polymerase has proven tough. To our knowledge, this is the first time GSPT1 has been linked to viral infection.”
As a fellow at the Wellcome Sanger Institute, I was trained in gene and cell engineering and genetic screening approaches, including CRISPR-Cas9. The Druggable Genome The Druggable Genome is the subset of all human genes encoding proteins that could be targeted with a smallmolecule or antibody drug [4].
As Crooke explained, “With smallmolecules, if you make any chemical change, you have a new ballgame. That’s not the case with RNA-targeted drugs. Working closely with Ionis, “We connect the need to the drug development engine. Crooke, therefore, created n-Lorem Foundation to do that charitably.
She has played a key role inbuilding the target identification platform and a proprietary database of transcriptome-wide, functional RNA structures. There, I supported AI-enabled DD efforts in their smallmolecule portfolio.
Galidesivir is a broad-spectrum antiviral, an adenosine nucleoside analog that blocks viral RNA polymerase. STP705 is a small interfering RNA (siRNA) therapy that leverages a dual-targeted inhibitory property and polypeptide nanoparticle (PNP)-enhanced delivery to knock down both TGF-beta1 and COX-2 gene expression.
Oligonucleotide-Based Techniques Most oligonucleotide therapies act through antisense mechanisms and are directed against various RNA species. Several smallmolecule GLP-1R agonists, such as oral orforglipron, are in late-stage clinical development. Asia, and Europe.
We are focusing on developing highly innovative medicines that contribute to making a difference in people’s lives by advancing the frontier of new treatment options and leveraging our enhanced collaborative R&D engine and capabilities to create a robust, modality-diverse pipeline. selective GABA A receptor agonist.
Its broad portfolio of oncology product candidates includes individualized and off-the-shelf mRNA-based therapies, innovative chimeric antigen receptor T cells, bi-specific checkpoint immuno-modulators, targeted cancer antibodies and smallmolecules.
Its broad portfolio of oncology product candidates includes individualized and off-the-shelf mRNA-based therapies, innovative chimeric antigen receptor T cells, bi-specific checkpoint immuno-modulators, targeted cancer antibodies and smallmolecules. For more information, visit. www.merck.com. and connect with us on. www.novavax.com.
The company and MiNA Therapeutics Limited announced a global research collaboration to develop novel drug candidates using MiNA’s proprietary small activating RNA (saRNA) technology platform. The company announced the acquisition of Protomer Technologies Inc., Loxo Oncology at Lilly and Kumquat Biosciences Inc.
Link Experimental Tests of the Virtual Circular Genome Model for Nonenzymatic RNA Replication. Link Single-molecule visualization of stalled replication-fork rescue by the Escherichia coli Rep helicase. Link U1 snRNP increases RNA Pol II elongation rate to enable synthesis of long genes. Metabolic Engineering. Mimoso C.A.
Synthetic biologists have recently designed interacting protein clusters that act as neural networks inside living cells, gene circuits that can switch between OR and AND logic gates based on smallmolecule triggers , and even programmed a community of cells to execute a hashing function widely used in cryptography.
Codon Digest is my weekly roundup of research, news, and industry highlights about engineered biology. These microbes were engineered to express tumor antigens that could “elicit T cells that were licensed by the commensal immune program but specific for a tumor,” including both CD4+ and CD8+ T cells, according to the study.
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