Steven Cheng
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scheng23.bsky.social
Steven Cheng
@scheng23.bsky.social
Chemistry & Chemical Biology PhD Candidate @Harvard woolab.org |
Chemical Engineering @Stanford Alumnus |
Small molecules 💊, PTMs (esp O-GlcNAc 🟦), RNA splicing 🧬
Pinned
Excited to share "Opportunities for Therapeutic Modulation of O-GlcNAc" @acspublications.bsky.social Chemical Reviews with Alison Mody in the Woo lab, our contribution to an upcoming special issue "Drugging the Undruggable". (1/6) pubs.acs.org/doi/10.1021/... #glycotime
Opportunities for Therapeutic Modulation of O-GlcNAc
O-Linked β-N-acetylglucosamine (O-GlcNAc) is an essential, dynamic monosaccharide post-translational modification (PTM) found on serine and threonine residues of thousands of nucleocytoplasmic protein...
pubs.acs.org
www.cell.com/cell/abstrac...

"Here, we confirm profound diet-PI3K anticancer synergy but show that it is, surprisingly, unrelated to diet macronutrient composition. Instead, the diet-PI3K interaction involves microbiome metabolism of ingested phytochemicals."
Microbiome metabolism of dietary phytochemicals controls the anticancer activity of PI3K inhibitors
Diet can impact anticancer drug activity. A classic example in rodents is a ketogenic diet enhancing PI3K inhibitor activity. Here, we show that phytochemicals and their microbiome derivatives, rather...
www.cell.com
May 20, 2025 at 2:15 PM
www.nejm.org/doi/full/10....

"In this study, we describe a personalized base-editing therapy wholly developed in the 6-month span after a patient’s birth."
Patient-Specific In Vivo Gene Editing to Treat a Rare Genetic Disease | NEJM
Base editors can correct disease-causing genetic variants. After a neonate had received a diagnosis of severe carbamoyl-phosphate synthetase 1 deficiency, a disease with an estimated 50% mortality ...
www.nejm.org
May 16, 2025 at 1:09 AM
www.nature.com/articles/s41...
"Lipoamide partitions into stress granules in cells, prevents formation of stress granules and dissolves existing stress granules, allowing us to identify a pathway that allows stress granules to sense the oxidative state of the cell."
Small-molecule dissolution of stress granules by redox modulation benefits ALS models - Nature Chemical Biology
Uechi et al. found that a small-molecule lipoamide dissolves stress granules (SGs) by targeting SFPQ, a redox-sensitive disordered SG protein, alleviating pathological phenotypes caused by amyotrophic...
www.nature.com
May 14, 2025 at 6:11 PM
Broad Target Screening Reveals Abundance of FKBP12-Based Molecular Glues in Focused Libraries
pubs.acs.org/doi/10.1021/...

"Our results demonstrate that molecular glues are more common than previously thought and that they can be identified by repurposing existing focused libraries."
Broad Target Screening Reveals Abundance of FKBP12-Based Molecular Glues in Focused Libraries
Competitive (nondegradative) molecular glues represent a promising drug modality that remains underexplored primarily due to the lack of adequate hit identification approaches. In this study, we screened our historically grown FKBP-focused library containing >1000 drug-like molecules to identify FKBP-assisted molecular glues targeting a diverse panel of 57 proteins. In addition to establishing a robust and generalizable screening approach, we discovered three novel FKBP-dependent molecular glues targeting PTPRN, BRD4BD2, and STAT4. Our results demonstrate that molecular glues are more common than previously thought and that they can be identified by repurposing existing focused libraries. An optimized, highly cooperative FKBP12-BRD4BD2 glue demonstrated the involvement of the BD2 pocket and exhibited selectivity over the closely related BD1 domain. Our results underscore the value of FKBP12-assisted molecular glues to target challenging proteins with the potential for high selectivity.
pubs.acs.org
April 29, 2025 at 5:08 PM
Reposted by Steven Cheng
Excited to share Benson’s and Maria’s work in collab w/Kostas Tzelepis: we found the nucleolar protein NPM1 is a marker of AML and can be targeted therapeutically

connecting ‘cell surface RNA biology’ to cancer biology

@natbiotech.nature.com
www.nature.com/articles/s41...
April 23, 2025 at 11:44 AM
Therapeutic potential of allosteric HECT E3 ligase inhibition
www.cell.com/cell/fulltex...

"we discover inhibitors that bind a cryptic cavity distant from the catalytic cysteine"
...
"these inhibitors restrict an essential catalytic motion by extending an α helix over a conserved glycine hinge"
April 7, 2025 at 4:14 PM
Very interesting screening approach leveraging different technologies including DELs, photocleavable linkers, microfluidics, RNA-seq to discover new bioactive VHL molecular glues
March 21, 2025 at 3:06 PM
Reposted by Steven Cheng
🚨 Rational discovery of VHL molecular glues. New Preprint from @amgen.bsky.social Induced Proximity group led by postdoc Jonathan Bushman reports the discovery of a VHL molecular glue degrader of GEMIN3 by Picowell RNA-seq. Read on for details. 🧵1/8 www.biorxiv.org/content/10.1...
Discovery of a VHL molecular glue degrader of GEMIN3 by Picowell RNA-seq
Targeted protein degradation (TPD) is an emerging therapeutic modality in which small molecules are used to recruit targets to the natural protein degradation machinery of the cell. Molecular glue deg...
www.biorxiv.org
March 21, 2025 at 4:17 AM
www.nature.com/articles/s41...
www.nature.com/articles/d41...

A polyene macrolide targeting phospholipids in the fungal cell membrane

New antifungal breaks the mould

"Mandimycin is an antifungal molecule that acts by specifically targeting phospholipids"
March 21, 2025 at 3:01 PM
Reposted by Steven Cheng
Small-molecule allosteric activator of ubiquitin-specific protease 7 (USP7) https://www.biorxiv.org/content/10.1101/2025.03.14.643379v1
March 17, 2025 at 3:45 AM
www.nature.com/articles/s41...
Neat story of hit validation

To further validate the compound in well H20, we purchased.. from two commercial vendors.. neither inhibited..

LC–MS revealed that the H20 compound was pure, with a mass of 555.55 Da instead of the expected mass of 382.25 Da
Molecular glues that inhibit deubiquitylase activity and inflammatory signaling - Nature Structural & Molecular Biology
The BRCC36 isopeptidase complex (BRISC) is a deubiquitylase that stabilizes interferon receptors, driving inflammation. We discovered ‘BRISC molecular glue’ inhibitors (BLUEs) that selectively inactiv...
www.nature.com
March 17, 2025 at 2:04 PM
www.biorxiv.org/content/10.1...

"We target homomeric proteins with PINCHs (Polymerization Inducing Chimeras) - bifunctional molecules composed of two linked ligands that act as bridges between homomers and trigger their supramolecular assembly into insoluble polymers."
A pharmacological modality to sequester homomeric proteins
Molecules that can perturb protein-protein interactions have an immense impact on chemical biology and therapeutics. However, such compounds typically rely on accessory proteins to function, such as E...
www.biorxiv.org
March 11, 2025 at 7:35 PM
www.cell.com/cell/abstrac...
Lysine vitcylation is a vitamin C-derived protein modification that enhances STAT1-mediated immune response

“Here, we report that vitC directly modifies lysine residues to form “vitcyl-lysine”—a process termed vitcylation.”
Lysine vitcylation is a vitamin C-derived protein modification that enhances STAT1-mediated immune response
Vitamin C directly modifies lysine residues through vitcylation, regulating STAT1 signaling and enhancing anti-tumor immune responses by preventing STAT1 dephosphorylation.
www.cell.com
March 2, 2025 at 4:26 AM
www.nature.com/articles/s41...

"We are what we eat," said the study's co-senior author Angelo D'Alessandro, Ph.D.

"What we eat changes the composition of us and when immune cells eat bacteria the same thing happens to them."
Macrophages recycle phagocytosed bacteria to fuel immunometabolic responses - Nature
Phagocytosed bacteria can serve as an alternative nutrient source for macrophages, influencing their metabolic and immune responses through the recycling of microbial components, with the process regu...
www.nature.com
February 27, 2025 at 3:59 AM
www.researchsquare.com/article/rs-4...

A clinical drug candidate that triggers non-apoptotic cancer cell death

"[t]his lethal mechanism is distinct from ferroptosis, necroptosis and pyroptosis and requires the lipid metabolic enzyme trans-2,3-enoyl-CoA reductase (TECR)"
A clinical drug candidate that triggers non-apoptotic cancer cell death
Small molecules that induce non-apoptotic cell death are of fundamental mechanistic interest and may be useful to treat certain cancers. Here, we report that tegavivint, a drug candidate undergoing hu...
www.researchsquare.com
February 25, 2025 at 3:56 PM
Reposted by Steven Cheng
🚨 New paper alert! 🚨
Check out our latest work on HypoxyStat, a small-molecule therapy that increases oxygen-hemoglobin affinity and provides a practical form of hypoxia therapy. A great collaboration with Maze Therapeutics
🔗 Paper: doi.org/10.1016/j.ce... @cp-cell.bsky.social
Redirecting
doi.org
February 17, 2025 at 11:53 PM
Reposted by Steven Cheng
Now online in Cancer Discovery: Restoration of the Tumor Suppressor Function of Y220C-Mutant #p53 by Rezatapopt, a Small Molecule Reactivator - by @PuzioKuter, Lizhong Xu, Masha Poyurovsky, and colleagues doi.org/10.1158/2159...
February 14, 2025 at 4:54 PM
Reposted by Steven Cheng
Today in @nature.com we share our back-to-back stories with Ning Zheng’s lab revealing chemical-genetic convergence between a molecular glue degrader & E3 ligase cancer mutations. 1/5
February 12, 2025 at 4:20 PM
Return to Flatland

"Fifteen years ago, an analysis of drug molecules ... suggested that increased three-dimensional character was a marker of greater success. Now, we perform a similar analysis ... to see if the trends observed then still hold today"

www.nature.com/articles/s41...
Return to Flatland - Nature Reviews Chemistry
Fifteen years ago, an analysis of drug molecules moving through the stages of clinical development suggested that increased three-dimensional character was a marker of greater success. Now, we perform...
www.nature.com
January 31, 2025 at 7:07 PM
Modulation of Protein–Protein Interactions with Molecular Glues in a Synthetic Condensate Platform
pubs.acs.org/doi/10.1021/...
Modulation of Protein–Protein Interactions with Molecular Glues in a Synthetic Condensate Platform
Misregulation of protein–protein interactions (PPIs) underlies many diseases; hence, molecules that stabilize PPIs, known as molecular glues, are promising drug candidates. Identification of novel mol...
pubs.acs.org
January 31, 2025 at 3:19 PM
Reposted by Steven Cheng
Vertex wins FDA approval for non-opioid pain drug, setting stage for closely watched rollout www.statnews.com/2025/01/30/v... via @jonathanwosen.bsky.social
Vertex wins FDA approval for non-opioid pain drug, setting stage for closely watched rollout
Vertex Pharmaceuticals won FDA approval for a non-opioid drug for moderate to severe acute pain
www.statnews.com
January 30, 2025 at 11:16 PM
Reposted by Steven Cheng
🎉Super excited to share our story on how the substrate receptor FBXO31 functions as a quality control factor by recognizing amides. This has been an amazing collaboration between Bode lab and @jcornlab.bsky.social. Special shutout goes to @matthiasmuhar.bsky.social www.nature.com/articles/s41...
C-terminal amides mark proteins for degradation via SCF–FBXO31 - Nature
SCF–FBXO31 scans proteins for C-terminal amidation and marks them for subsequent proteasomal degradation.
www.nature.com
January 29, 2025 at 4:29 PM
Reposted by Steven Cheng
Our latest story: a protein-protein interaction between an E3 ubiquitin ligase and an autophagy adaptor affects liquid-liquid phase separation and sequestration of a key mediator of antioxidant signaling — but not via ubiquitination! Bravo to Lin Luan and Xiaofu Cao!
doi.org/10.1101/2025...
January 24, 2025 at 10:00 PM
Reposted by Steven Cheng
CDC's Morbidity and Mortality Weekly Report (MMWR) has provided real-time data and analysis about disease outbreaks and emerging health threats without a break every week since 1960.

Until today.
January 23, 2025 at 6:38 PM