Results 41 to 50 of about 80,033 (290)

Sequential Patterning of Photoresponsive Hydrogels Directs Crypt Fission and Reveals the Role of Epithelial Curvature on Fission Symmetry

Advanced Science, EarlyView.
Deterministic crypt fission is achieved in intestinal organoids using photopatternable hydrogels with spatiotemporal control. Daughter‐crypt symmetry is shown to depend on parent‐crypt geometry and epithelial curvature, while myosin‐dependent mechanosensing links tissue shape to regenerative outcomes.
Delaney L. McNally, Kaustav Bera, Nolan R. Petrich, Alex Khang, Marilyne Coulombe, David Castillo‐Azofeifa, Ophir D. Klein, Peter J. Dempsey, Kristi S. Anseth   +8 more
wiley   +1 more source

Unveiling the Complete Biosynthetic Pathway of Azacitidine: A Rare 1,3,5‐Triazine Nucleoside Derived From GTP

Angewandte Chemie, EarlyView.
The azacitidine biosynthetic gene cluster (aza BGC) was identified by the resistance‐gene‐guided comparative genomics method in Streptomyces mobaraensis IPIO2. The complete biosynthetic pathway of azacitidine, which follows a “base‐first‐then‐glycosylation” logic, was elucidated through in vivo and in vitro experiments.
Dan Wang, Qingxu Meng, Lingqi Hua, Mengjun Sun, Qianjin Kang, Min‐Juan Xu, Linquan Bai   +6 more
wiley   +2 more sources

Synthesis methods of 1,2,4-triazole-3-thiones: review

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki
1,2,4-Triazole-containing compounds are unique heterocyclic compounds present in an array of pharmaceuticals and biologically important compounds used in drug-discovery studies against cancer cells, microbes, and various types of diseases in the human ...
Yu. S. Frolova, A. H. Kaplaushenko, T. V. Ihnatova, T. M. Kaplaushenko   +3 more
doaj   +1 more source

1,2,4-Triazoles. VII. Methylation of 1,2,4-triazoles.

Chemical and Pharmaceutical Bulletin, 1976
The methylations of twenty-five 1, 2, 4-triazoles with methyl iodide and diazomethane were studied and substituent effects on the product ratios are discussed. Methylation of 1, 2, 4-triazole and its symmetrically 3, 5-disubstituted derivatives occurred almost exclusively at the 1-position.
UDA, MASAYUKI, HISAZUMI, YUKINORI, SATO, KOJI, KUBOTA, SEIJU   +3 more
openaire   +2 more sources

Donor‐Cell Senescence Redirects PINK1‐Marked Mitochondrial Cargo From Mitophagy to Microvesicle Transfer Through SUMO3‐Stabilized HSPA9

Advanced Science, EarlyView.
ABSTRACT Extracellular vesicle therapies have been developed for tissue repair, but how donor‐cell senescence reshapes vesicle‐mediated mitochondrial transfer remains unclear. Here, we show that senescent adipose‐derived stem cells (ADSCs) redirect damaged mitochondria into microvesicles (MVs), converting protective vesicles into pro‐degenerative ...
Zixuan Ou, Mingke Zhao, Zhiwei Ling, Lianqi Peng, Bide Tong, Huaizhen Liang, Hongchuan Wang, Di Wu, Yifan Du, Zhi Du, Shihao Zhang, Yuyuan Jia, Yifan Qian, Gan Xu, Liuliang He, Gang Li, Shun Zhang, Lei Tan, Kun Wang, Xiaobo Feng, Cao Yang, Zhiwei Liao   +21 more
wiley   +1 more source

Site‐Specific Protein Bioconjugation Through Cellular Incorporation of Noncanonical Amino Acids

Angewandte Chemie, EarlyView.
Genetic code expansion (GCE) enables site‐specific installation of noncanonical amino acids containing bioorthogonal conjugation handles, allowing precise, homogeneous protein modification. This review examines the principles of orthogonal translation, surveys the chemistries available for chemoselective labeling, and highlights emerging multi‐site ...
Rahul Sarkar, Manas Joshi, Abhishek Chatterjee   +2 more
wiley   +2 more sources

1,2,3-Triazole: an important scaffold in drug design and development

Heterocyclic Communications
1,2,3-triazole represents a class of nitrogen-containing heterocyclics with a wide range of biological activity. The medicinal applications of 1,2,3-triazole derivatives, including antioxidant, antimicrobial, antiviral, anti-inflammatory, antitumor, and ...
Alghamdi Danyah Y., Zailaee Rasha A., Al-Amshany Zahra M., El-Shishtawy Reda M.   +3 more
doaj   +1 more source

SYNTHESIS AND DIURETIC ACTIVITY OF 2-(5-(PHENOXYMETHYL)-4-R1-1,2,4-TRIAZOLE-3-YLTHIO)ACETIC ACIDS AND THEIR SALTS

Zaporožskij Medicinskij Žurnal, 2014
It is known that drugs based on the 1,2,4-triazole have a wide spectrum of biological activities. They are effective cardioprotectors, hepatoprotectors, anti-oxidants, which are widely used in cardiology practice.
Yu. N. Kucheryavyi, A. G. Kaplaushenko, E. S. Pruhlo   +2 more
doaj   +1 more source

Photoelectrocatalytic Diazidation of Olefins via Synergistic Dual Iron Species

Advanced Science, EarlyView.
We report a simple and general approach for 1,2‐diazidation of alkenes by a photoelectrochemical strategy using TMSN3 as an azide source. This transformation proceeds using earth‐abundant iron under mild reaction conditions. It displays broad functional group compatibility and accommodates diverse alkene types‐including unactivated, activated, electron‐
Zhi‐Peng Guan, Zhong‐Qi Yi, Ning Li, He‐Yi Li, Jun Yao, Hong‐Gui Huang, Zhi‐Bing Dong   +6 more
wiley   +1 more source

Molecular Glue Degraders of TEM β‐Lactamases by Periplasmic Protease DegP

Angewandte Chemie, EarlyView.
Molecular glues are developed that target TEM‐family β‐lactamases to the bacterial protease DegP for degradation. β‐Lactamase inhibitor tazobactam is identified as accelerating TEM β‐lactamase degradation by DegP, which is further enhanced by linkerless incorporation of dipeptides enriched among DegP substrates.
Emilia K. Taylor, Patricia Santos Barbosa, Tarini Kadambi, Frederik Eisele, Yiqiao Wang, Elisabete C. C. M. Moura, Timothy R. Walsh, Georgia L. Isom, Thomas Lanyon‐Hogg   +8 more
wiley   +2 more sources