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Under a collaboration with NextRNA Therapeutics, Bayer will access the biotech’s platform to target long, non-coding RNA interactions with smallmolecule drugs.
In this article Drug Target Review’s Izzy Wood spoke to Sam Hasson, Director of Target Biology at Rgenta Therapeutics, a biotech firm in Massachusetts, US, that aims to develop smallmolecule therapeutics to target RNA processing.
Prior to 2015, I had a casual relationship, at best, with targeting RNA. The bulk of my nearly three decades of experience up to that point was with drugging protein targets using a variety of modalities, but principally smallmolecules. Welcome to the RNA world. Familiar tools to solve familiar problems with proteins.
Liganded sites were enriched for RNA-binding and protein–protein interaction (PPI) domains, including several sites found in RNP granule-forming proteins. In summary, we present a chemical strategy for the systematic discovery of condensate-modulating covalent smallmolecules.
Durham, North Carolina-based Ribometrix announced a strategic collaboration deal with Genentech , a Roche company, to identify and advance novel RNA-targeted smallmolecule therapeutics. Targeting RNA is believed to be a way to develop therapeutics for so-called undruggable proteins.
Our chemoproteogenomics platform integrates chemoproteomic, whole exome, and RNA-seq data, with a customized 2-stage false discovery rate (FDR) error controlled proteomic search, further enhanced with a user-friendly FragPipe interface.
Metabolism of 2022 FDA approved smallmolecule drugs – Part 1 Does CYP3A4 still rule? By Julia Shanu-Wilson It won’t come as much surprise to learn that of the 17 smallmolecules* approved by the FDA in 2022, CYP3A4 was the major player in drug metabolism. References Iversen et al., Front Pharmacol.,
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 article compiles recent high-profile clinical readouts and related news with smallmolecules of general interest and structures where they are available. Unlike sapropterin, sepiapterin is more active in cells and is also brain-penetrant.
Molecular dynamics (MD) simulations and other computational methods are vital tools in our arsenal , helping us peek into the atomic-level interactions and movements within the protein, helping reveal potential new binding sites induced by smallmolecule interactions. DNA and RNA are also key players, each bringing unique challenges.
Researchers are experimenting with biologics—larger biological molecules that can do things smallmolecules can't, like targeting larger, more complex structures on cell surfaces or even inside cells. Understanding why these targets are resistant to current therapeutic strategies is crucial.
These multifunctional smallmolecules are like tiny spies, hijacking the body’s natural protein degradation system to remove unwanted proteins. Multifunctional SmallMolecules and Peptides Beyond PROTACs, there are other exciting tools in the new drug discovery toolbox.
We are moving rapidly toward escape velocity in our RNA expedition at Arrakis. For those of you joining us for the first time, it’s worth a quick look back at why we decided to go all-in on the RNA world, why people thought we were crazy, and why we know we’re not. Our terra firma is small-molecule medicines.
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.
Haemoglobin A1c (HbA1c) is a validated surrogate endpoint for the reduction of microvascular complications associated with diabetes mellitus; reduced HIV-RNA levels serve as an endpoint for HIV disease control; and a reduction in low-density lipoprotein (LDL) cholesterol is used as an endpoint indicating lower likelihood of cardiovascular events.
Since our company’s founding in 2015, we have taken the long view and been singularly focused on building an extremely flexible and broadly applicable platform that can develop a host of RNA‑targeted smallmolecules (rSMs) to deliver precision medicines for dozens of targets that have been out of reach for conventional approaches.
Smallmolecule GLP1s? Smallmolecules are still in vogue despite IRA headwinds: We continue to hear optimism for the convenience of orals even in indications with high-commercial potential and enriched for CMS coverage (likely to fall in crosshairs of IRA).
Applying our technology has enabled us to develop a new smallmolecule, TT125-802, and to assign a new role to the epigenetic regulator CBP/p300 as a novel master regulator of non-oncogene resistance. This orally available smallmolecule binds to the bromodomain of CBP/p300 in a highly specific manner.
The researchers also looked at the tool’s ability to detect changes in cellular phenotypes after exposure to drugs and smallmolecule compounds. That teaches us far more than looking for just a single informative data point.” Typically, studying drug therapies is an expensive and time-consuming undertaking.
As soon as I learned about DNA and RNA, I wanted to be a molecular biologist. Last stops at RNA My last roles in biotech were where my original passion began: DNA and RNA. My last stop at Arrakis Therapeutics is with a company targeting RNA with smallmolecules. Arrakis is the capstone of my career.
However, in June I happened to attend the Gordon Research Conference on Chemical Biology and High-throughput Chemistry where I saw a session on smallmolecules and RNA. Making small-molecule drugs against RNA structures looked like a really cool problem – I want to do THAT! This is a thing?
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.
Researchers from the Laboratory of Bacteriology at The Rockefeller University have now found that bacteria sense phages by a defensive response named CBASS (cyclic oligonucleotide-based antiphage signalling system) which detects viral RNA. The novel, hairpin-shaped molecule was named cabRNA for CBASS-activating bacteriophage RNA.
Or should I say back to retirement, as he was comfortably relaxing at home back in 2016 when Jen Petter lured him back into the fray with the siren call of developing a new class of RNA-targeted small-molecule medicines here at Arrakis. I won’t dwell on Jim’s many accomplishments here.
Our in-house SPR equipment comprises: 2x Biacore TM 8K+ 3x Biacore TM 8K 1x Biacore TM T200 This covers mM binders, such as fragments, through to sub pM interactions (such as late stage smallmolecules or very high affinity biological interactions, Tollenaere et al 2023 [link] ). This technology measures affinities from mM to nM.
is a clinical-stage biopharmaceutical company developing novel RNA-modulating drug candidates (designed to be eukaryotic ribosomal selective glycosides) that are formulated to treat rare and ultra-rare premature stop codon diseases. Premature stop codons are point mutations that disrupt protein synthesis from messenger RNA.
Cell Painting uses six fluorescent dyes to image eight different components of a cell: the nucleus, nucleoli, mitochondria, endoplasmic reticulum (ER), golgi apparatus, cytoplasmic RNA, f-actin cytoskeleton, and plasma membrane. Typically, studying drug therapies is an expensive and time-consuming undertaking.
Galidesivir treatment was associated with a more rapid decline in viral RNA levels in the respiratory tract in an apparent dose-dependent manner.
About Galidesivir (BCX4430)
Galidesivir, a broad-spectrum antiviral drug, is an adenosine nucleoside analog that acts to block viral RNA polymerase.
Diverse Target Classes We Work With: Soluble Proteins: This includes kinases, ligases, transcription factors, helicases, polymerases, and DNA/RNA modifying enzymes, among others. Membrane Proteins: Examples include cell surface receptors, GPCRs, and transporters. Nucleic Acid Targets: Focusing on specific interactions and functions.
Immunization of non-human primates (rhesus macaques) with BNT162b2, a nucleoside-modified messenger RNA (modRNA) candidate that expresses the SARS-CoV-2 spike glycoprotein, resulted in strong anti-viral effects against an infectious SARS-CoV-2 challenge.
A twist of fate: GRP78 regulates cell migration and invasion Continuing their exploration of GRP78’s functions in the cell nucleus, the researchers utilised sophisticated RNA sequencing to compare lung cancer cells engineered to over-express nuclear GRP78 with cells lacking it.
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.
Their solution was to fuse hairpins, little loops made from RNA or DNA, at various positions along the DNA strand that was being sequenced. Smallmolecules can randomly transit through the pore and create disruptions, and the polymerase ratchet mechanism is imperfect, occasionally causing DNA to temporarily reverse direction through the pore.
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. “It’s the efficiency of antisense technology, coupled with its other characteristics, that makes n-Lorem’s approach feasible.”.
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.
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.
A few years ago, at Arrakis Therapeutics, we set out to conquer a strange new territory, drugging RNA structures with smallmolecules. In fact, it was these early pharmaceutical successes that gave us the confidence that we would ultimately succeed in systematically drugging a wide range of RNA structures.
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.
AT-527 is expected to be ideally suited to combat COVID-19 as it inhibits viral replication by interfering with viral RNA polymerase, a key component in the replication machinery of RNA viruses. Importantly, the manufacturing process for our smallmolecule direct-acting antiviral allows us to produce AT-527 quickly and at scale.”.
AI’s role in sequencing Bulk BCR RNA sequencing looks at specific B cells circulating in a blood sample that are producing these common antibodies. The challenge that we have using bulk BCR RNA,” she continued, “is that an antibody is made up of four components.
In their work, Levy and her colleagues focused on a complex of proteins called PRC2 that silences genes by attaching a smallmolecule, called a methyl group, to a protein that packages genes called histones. Cas9 binds and uses RNA as an address-tag. The AI-designed blocking protein was the cargo of the dCas9-RNA construct.
Read A new DNA polymerase variant, called RT-KTq I614Y, can directly detect RNA modifications, including pseudouridine (Ψ) and queuosine (Q). By combining this new variant with standard sequencing methods, it’s possible to identify RNA modifications in a really simple way. Nucleic Acids Research. Communications Biology.
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