The treatment of ischemic stroke (IS) remains a big challenge in clinics, and it is urgently needed to develop novel, safe, and effective medicines against IS. Here, we report the design, synthesis, and biological evaluation of organic NO donors as potential agents for the treatment of IS. The representative compound was able to slowly generate low concentrations of NO by reaction with a thiol-containing nucleophile, and the NO was selectively converted into NO under ischemic/hypoxia conditions to protect primary rat neurons from oxygen-glucose deprivation and recovery (OGD/R)-induced cytotoxicity by enhancing the Nrf2 signaling and activating the NO/cGMP/PKG pathway. Treatment with at 2 h before or after ischemia mitigated the ischemia/reperfusion-induced brain injury in middle cerebral artery occlusion (MCAO) rats by producing NO and enhancing Nrf2 signaling. Furthermore, significantly promoted endothelial cell proliferation and angiogenesis within the ischemic penumbra. Our findings suggest that this type of NO donors, like , may be valuable to fight IS and other ischemic diseases.
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http://dx.doi.org/10.1021/acs.jmedchem.1c00282 | DOI Listing |
J Cancer Res Clin Oncol
December 2024
Zhuhai Tengbai Pharmaceutical Co., Ltd, Zhuhai, 519031, China.
Background: Colorectal cancer (CRC) is the third most common cancer globally, with advanced stages presenting significant treatment challenges. Recently years, drug combination therapy has become a promising strategy for cancer treatment.
Objective: To evaluate the therapeutic efficacy of the combination of the anti-angiogenic drug PEP06 (TB01) and the cytotoxic drug Trifluridine/Tipiracil (TAS-102) in human CRC HCT-116 xenograft mouse model.
JAMA Netw Open
December 2024
School of Management, Shanxi Medical University, Taiyuan, China.
Importance: Blinding of individuals involved in randomized clinical trials (RCTs) can be used to protect against performance and biases, but discrepancies in the reporting of methodological features between registered protocols and subsequent trial publications may lead to inconsistencies, thereby reintroducing bias.
Objective: To investigate inconsistency in blinding as reported in trial registries and publications.
Data Sources: An exploratory dataset and a validation dataset were created.
Protein Sci
January 2025
Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan.
Antibodies and antibody mimics are extensively used in the pharmaceutical industry, where stringent safety standards are required. Implementing heat sterilization during or after the manufacturing process could help prevent contamination by viruses and bacteria. However, conventional antibodies and antibody mimics are not suitable for heat sterilization because they irreversibly denature at high temperatures.
View Article and Find Full Text PDFMethods Mol Biol
December 2024
Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, China.
Mitochondria are dynamic organelles with constantly changing morphologies. Despite recent reports indicating that mechanical cues modulate mitochondrial morphologies and functions, there is a lack of methods that can exclusively and precisely exert mechanical forces to and deform mitochondria in live cells. Therefore, how mitochondria sense and respond to mechanical forces remains largely elusive.
View Article and Find Full Text PDFMethods Mol Biol
December 2024
Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich GmbH, Jülich, Germany.
Photocaged compounds are chemical conjugates that are designed to release an active molecule upon exposure to light of a specific wavelength. In recent years, photocaged inducer molecules such as caged isopropyl β-D-1-thiogalactopyranoside (cIPTG) have been increasingly used as a powerful tool for light-driven gene expression in bacteria, allowing researchers to precisely and noninvasively tune the expression of specific target genes. In this chapter, we present a guideline for the synthesis of 6-nitropiperonyl photocaged IPTG (NP-cIPTG) as well as its in vivo application as an optochemical on-switch of gene transcription in Escherichia coli and other bacteria.
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