Quinolines and thiazolopyridines were developed as allosteric inhibitors of MALT1, with good cellular potency and exquisite selectivity. Mouse pharmacokinetic (PK) profiling showed these to have low in vivo clearance, and moderate oral exposure. The thiazolopyridines were less lipophilic than the quinolines, and one thiazolopyridine example was active in our hIL10 mouse pharmacodynamic (PD) model upon oral dosing.
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http://dx.doi.org/10.1016/j.bmcl.2019.05.040 | DOI Listing |
J Med Chem
January 2025
Louvain Drug Research Institute (LDRI), Medicinal Chemistry Research Group (CMFA), Université Catholique de Louvain (UCLouvain), Brussels B-1200, Belgium.
Arginase-1 (ARG-1) is a promising target for cancer immunotherapy, but the small size and the highly polar nature of its catalytic site present significant challenges for inhibitor development. An alternative strategy to induce enzyme inhibition by targeting protein oligomerization has been developed recently, offering several advantages such as increased selectivity, promotion of protein degradation, and potential substoichiometric inhibition. In this study, we demonstrated that only trimeric ARG-1 is active, which was confirmed by producing monomeric arginase-1.
View Article and Find Full Text PDFCurr Opin Neurobiol
December 2024
Department of Neuroscience and Cell Biology and Child Health Institute of New Jersey, Rutgers Robert Wood Johnson Medical School, New Brunswick, 08901, USA. Electronic address:
Cyclic AMP (cAMP) is a key regulator of synaptic function and is dysregulated in both neurodevelopmental (NDD) and neurodegenerative disorders. Due to the ease of diffusion and promiscuity of downstream effectors, cAMP signaling is restricted within spatiotemporal domains to localize activation. Among the best-studied mechanisms is the feedback inhibition of cAMP-dependent protein kinase (PKA) activity by phosphodiesterases 4 (PDE4s) at synapses controlling neuronal plasticity, which is largely regulated by PDE4D.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
National Key Laboratory of Space Medicine, China Astronaut Research and Training Center, Beijing 100094, China.
TMEM16A, a key calcium-activated chloride channel, is crucial for many physiological and pathological processes such as cancer, hypertension, and osteoporosis, etc. However, the regulatory mechanism of TMEM16A is poorly understood, limiting the discovery of effective modulators. Here, we unveil an allosteric gating mechanism by presenting a high-resolution cryo-EM structure of TMEM16A in complex with a channel inhibitor that we identified, Tamsulosin, which is resolved at 2.
View Article and Find Full Text PDFSci Rep
December 2024
Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland.
The incidence of oesophageal adenocarcinoma (OAC) has risen six-fold in western countries over the last forty years but survival rates have only marginally improved. Hyperactivation of the PI3K-AKT-mTOR pathway is a common occurrence in OAC, driving cell survival, proliferation and resistance to chemotherapeutic agents. Inhibition of AKT has been explored as a treatment strategy with limited success and current inhibitors have failed to progress through clinical trials.
View Article and Find Full Text PDFElife
December 2024
Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, United States.
Inhibition of Bruton's tyrosine kinase (BTK) has proven to be highly effective in the treatment of B-cell malignancies such as chronic lymphocytic leukemia (CLL), autoimmune disorders, and multiple sclerosis. Since the approval of the first BTK inhibitor (BTKi), Ibrutinib, several other inhibitors including Acalabrutinib, Zanubrutinib, Tirabrutinib, and Pirtobrutinib have been clinically approved. All are covalent active site inhibitors, with the exception of the reversible active site inhibitor Pirtobrutinib.
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