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-Functionalization of Pillar[4]arene[1]benzoquinone Monoxime via Selective 1,4-Addition of Grignard Reagents.
Org Lett
January 2025
School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, P. R. China.
-functionalization of pillar[]arenes has been a formidable challenge, partially due to the fragility of their macrocyclic skeletons. In this concise report, we describe a facile synthetic method for monoarylation/alkylation at the position to the oxime functionality in pillar[4]arene[1]benzoquinone monoxime () via addition of Grignard reagents. The described method enables the creation of various mono--alkyl/aryl-substituted pillar[5]arene derivatives that were previously inaccessible.
View Article and Find Full Text PDFA Dual-Pathway Responsive Mechanophore for Intelligent Luminescent Polymer Materials.
J Am Chem Soc
January 2025
Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310058, PR China.
Mechanoluminescent units, when integrated into polymer matrices, undergo structural transformations in response to mechanical force, resulting in changes in fluorescence. This phenomenon holds considerable promise for the development of stress-sensing materials. Despite the high demand for robust, tunable mechanoluminescent mechanophores for force assessment and smart force-responsive materials, strategies for their design and synthesis remain underdeveloped.
View Article and Find Full Text PDFMultiplexed single-cell imaging reveals diverging subpopulations with distinct senescence phenotypes during long-term senescence induction.
Geroscience
January 2025
Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
Cellular senescence is a phenotypic state that contributes to the progression of age-related disease through secretion of pro-inflammatory factors known as the senescence-associated secretory phenotype (SASP). Understanding the process by which healthy cells become senescent and develop SASP factors is critical for improving the identification of senescent cells and, ultimately, understanding tissue dysfunction. Here, we reveal how the duration of cellular stress modulates the SASP in distinct subpopulations of senescent cells.
View Article and Find Full Text PDFCompound heterozygous TMEM67 biallelic variants including a novel frameshift mutation in two Filipino adolescent siblings with Joubert syndrome.
J Neural Transm (Vienna)
January 2025
Section of Adult Neurology, Department of Internal Medicine, Chong Hua Hospital, Fuente, Cebu, Philippines.
Joubert Syndrome (JS) is a congenital cerebellar ataxia typically inherited in an autosomal recessive pattern, although rare X-linked inheritance can occur. It is characterized by hypotonia evolving into ataxia, global developmental delay, oculomotor apraxia, breathing dysregulation, and multiorgan involvement. To date, there are 40 causative genes implicated in JS, all of which encode proteins of the primary cilium.
View Article and Find Full Text PDFAntagonist Action of Endophytic Metarhizium anisopliae Isolates on Development, Reproduction, and Host Selection of Grass Bug in Bermudagrass.
Neotrop Entomol
January 2025
Research Center for Family Agriculture, Agricultural Research and Rural Extension Company of Santa Catarina (CEPAF/EPAGRI), Chapecó, Santa Catarina, Brazil.
To understand the interactions of entomopathogenic fungi with forage plants and their influence on associated herbivorous, we evaluated the influence of endophytic colonization with three isolates (CEPAF_ENT 25, CEPAF_ENT 27, and IBCB 425) of Metarhizium anisopliae on Cynodon dactylon, regarding the biological and behavioral aspects of Collaria scenica, an emerging sucking pest in pastoral systems in Brazil. The application of suspensions at the base of plant (drench) was effective in promoting endophytic colonization, especially in the roots, with emphasis on isolates CEPAF_ENT25 and CEPAF_ENT27. Despite the significant reduction in damage caused by C.
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