meso-Carboxyl-BODIPY responds to small electronic changes resulting from acyl substitution reactions with a marked change in fluorescence. Herein, the minute changes that accompany the thioester to amide conversion encountered in native chemical ligation (NCL) are exploited in the construction of fluorescent "turn-on" probes. Two fluorogenic probes, 1 a and 4, derived from a meso-thioester-BODIPY scaffold, were designed for the selective detection of cysteine (1 a) and aminopeptidase N (4), respectively. The aromatic (1 a) and aliphatic (4) thioesters of meso-carboxyl-BODIPY are nonfluorescent. However, specific analyte-induced conversion to the meso-amide derivative caused significant spectral changes and a dramatic fluorescence enhancement. Probe 1 a exhibited a large fluorescence "turn-on" response with high selectivity toward cysteine via a tandem NCL reaction. Probe 4 was successfully applied to the monitoring and imaging of endogenous aminopeptidase N in live cancer cells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.202101990 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Arithmetic normalisation models for the effects of lipid on carbon stable isotope values in silver carp () tissue.
Isotopes Environ Health Stud
January 2025
Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, USA.
Invasive silver carp () threaten Mississippi River basin ecosystems due to their ability to outcompete native species. Stable carbon (δC) and nitrogen (δN) isotope analysis has been used to study how silver carp impact native ecosystems, but lipids in fish tissues commonly bias their δC values. Chemical lipid extraction and mathematical equations that normalise δC values for lipid content can account for this bias, but have not been assessed for silver carp.
View Article and Find Full Text PDFGreen synthesis of a fluorescence optical probe for Fe based on Barberry derived carbon quantum dots: Deep insight on interaction from experimental and theoretical approach.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
A green facile method was developed to synthesize the carbon quantum dots from barberry, a native plant, as a new carbon source. The synthesis strategy is a simple one-step hydrothermal process without requiring hazardous chemical reagents. The spherical structure of b-CDs with an average particle size of 3.
View Article and Find Full Text PDFAlien toxic toads suppress individual growth and phenotypic development of native predatory salamanders.
Oecologia
January 2025
Tomakomai Experimental Forest, Field Science Center for Northern Biosphere, Hokkaido University, Takaoka, Tomakomai, Hokkaido, 053-0035, Japan.
Alien species can influence populations of native species through individual-level effects such as predation, competition, and poisoning. For alien species that possess strong defensive chemicals, poisoning is one of the most powerful mechanisms of individual-level effects on native biota. Although toxic alien species could potentially negatively affect survival (lethal effects) or life history traits (sub-lethal effects) of native predators via poisoning, previous studies have mainly focused on acute lethal effects.
View Article and Find Full Text PDFAdditive manufacturing in spatial patterning for spinal cord injury treatment.
Adv Drug Deliv Rev
January 2025
School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University 637459 Singapore; Critical Analytics for Manufacturing Personalized-Medicine Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology, Campus for Research Excellence and Technological Enterprise 138602 Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University 308232 Singapore; School of Materials Science and Engineering 639798 Singapore; National Neuroscience Institute, 11 Jalan Tan Tock Seng 308433 Singapore. Electronic address:
Combinatorial treatments integrating cells and biomolecules within scaffolds have been investigated to address the multifactorial nature of spinal cord injury (SCI). Current regenerative treatments have been ineffective as they do not consider the spatial positions of various cell types to effectively form functional neural pathways. Emulating the complex heterogeneity of cells in the native spinal cord requires translating the existing biological understanding of spatial patterning in neural development, as well as the influence of biomolecule and mechanical patterning on regional specification and axonal regeneration, to engineer a scaffold for spinal cord regeneration.
View Article and Find Full Text PDFRecent trends in embedded 3D bioprinting of vascularized tissue constructs.
Biofabrication
January 2025
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea, Pohang, 37673, Korea (the Republic of).
3D bioprinting technology offers significant advantages in the fabrication of tissue and organ structures by allowing precise layer-by-layer patterning of cells and various biomaterials. However, conventional bioinks exhibit poor mechanical properties, which limit their use in the fabrication of large-scale vascularized tissue constructs. To address these limitations, recent studies have focused on the development of rapidly crosslinkable bioinks through chemical modification.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!