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Label-free quantitative imaging of conjunctival goblet cells.
Ocul Surf
January 2025
Division of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea, 37673; Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea, 37673. Electronic address:
Purpose: To introduce and validate quantitative oblique back-illumination microscopy (qOBM) as a label-free, high-contrast imaging technique for visualizing conjunctival goblet cells (GCs) and assessing their functional changes.
Methods: qOBM was developed in conjunction with moxifloxacin-based fluorescence microscopy (MBFM), which was used for validating GC imaging. Initial validation was conducted with polystyrene beads, followed by testing on normal mouse conjunctiva under both ex-vivo and in-vivo conditions.
Pegylated NIR Fluorophore-Conjugated OBHSA Prodrug for ERα-Targeted Theranostics with Enhanced Imaging and Long-Term Retention.
Molecules
January 2025
Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China.
In recent years, the near-infrared (NIR) fluorescence theranostic system has garnered increasing attention for its advantages in the simultaneous diagnosis- and imaging-guided delivery of therapeutic drugs. However, challenges such as strong background fluorescence signals and rapid metabolism have hindered the achievement of sufficient contrast between tumors and surrounding tissues, limiting the system's applicability. This study aims to integrate the pegylation strategy with a tumor microenvironment-responsive approach.
View Article and Find Full Text PDFModulating room-temperature phosphorescence of D-π-A luminogens via methyl substitution, positional isomerism, and host-guest doping.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Guangxi Key Laboratory of Electrochemical and Magneto-chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
Organic room-temperature phosphorescence (RTP) luminogens have showed significant potential in the fields of diagnostics, sensing, and information encryption. However, it is difficult to achieve high RTP yield (Φ) and long RTP lifetime simultaneously. By methyl substitution, positional isomerism, and host-guest doping, three new D-π-A type luminogens named as TBTDA, 2M-TBTDA, and 3M-TBTDA were designed and synthesized, whose RTP properties were tuned and optimized.
View Article and Find Full Text PDFStimuli-Chromic Oxazolidine Latex Nanoparticles for Dual-Responsive pH-Sensors and Rewritable Halochromic Papers: A Physicochemical Study on Colorimetric and Fluorimetric Signals.
ACS Appl Mater Interfaces
January 2025
Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
Oxazolidine is a new category of stimuli-chromic compounds that has unique intelligent behaviors such as halochromism, hydrochromism, solvatochromism, and ionochromism, all of which have potential applications for designing and constructing chemosensors by using functionalized-polymer nanocarriers. Here, the poly(MMA--HEMA) based nanoparticles were synthesized by emulsion copolymerizing methyl methacrylate (MMA) and 2-hydroxyethyl methacrylate (HEMA) in different copolymer compositions. The poly(MMA--HEMA) based nanoparticles were modified physically with tertiary amine-functionalized oxazolidine (as an intelligent pH-responsive organic dye) to prepare halochromic latex nanoparticles.
View Article and Find Full Text PDFA high-contrast NIR excitation probe for monitoring Cu in the endoplasmic reticulum for synergistic cuproptosis and ferroptosis anticancer therapy.
Nanoscale
January 2025
School of Chemistry and Chemical Engineering, Center of Free Electron Laser & High Magnetic Field, Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of Education, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, and Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, P.R. China.
Currently, the study of cuproptosis focuses on the Cu-induced morphology changes in mitochondria (Mito), and the observation of the effect of endoplasmic reticulum (ER)-related Cu content on cuproptosis is relatively lacking. Herein, we have developed a hydroxyflavone (HF)-based NIR excited two-photon fluorescent probe, BHCO, that exhibits specific recognition of Cu with high resolution. BHCO-Cu (Cu2BC) can lead to DLAT protein aggregation, triggering cuproptosis.
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