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Effective One-for-All Phototheranostic Agent for Hypoxia-Tolerant NIR-II Fluorescent/PA Image-Guided Phototherapy.
Small
January 2025
Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, P. R. China.
Near-infrared (NIR)-triggered type-I photosensitizers are crucial to address the constraints of hypoxic tumor microenvironments in phototherapy; however, significant challenges remain. By selecting an electron-deficient unit, a matched energy gap in the upper-level state is instrumental in boosting the efficiency of intersystem crossing for the type-I electron transfer process. 2-Cyanothiazole, an electron acceptor, is covalently linked with N, N-diphenyl-4-(thiophen-2-yl)aniline to yield a multifunctional photosensitizer (TTNH) that exhibits intrinsic NIR absorbance and compatible T energy levels, facilitating both radiative and nonradiative transitions.
View Article and Find Full Text PDFBCL6 Alleviates Hepatic Ischemia/Reperfusion Injury Via Recruiting SIRT1 to Repress the NF-κB/NLRP3 Pathway.
Transplantation
January 2025
Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.
Background: Hepatic ischemia/reperfusion (I/R) injury (HIRI) is an intrinsic phenomenon observed in the process of various liver surgeries. Unfortunately, there are currently few options available to prevent HIRI. Accordingly, we aim to explore the role and key downstream effects of B-cell lymphoma 6 (BCL6) in hepatic I/R (HIR).
View Article and Find Full Text PDFThe endothelium or mitochondrial level therapy: new frontiers in sepsis?
Med Intensiva (Engl Ed)
January 2025
Intensive Care Unit, Adesh Medical College and Hospital, NH44, Mohri, Ambala, Haryana-136135, India; Department of Anaesthesiology and Critical Care, Command Hospital (NC), Udhampur 182101, India. Electronic address:
Article Synopsis
- The host and microbes interact closely to regulate inflammation in sepsis, highlighting its complexity.
- Sepsis is increasingly viewed as a problem with the mitochondrial system, often linked to poor blood flow and oxygen supply ("microcirculatory and mitochondrial distress syndrome").
- Future treatments aimed at improving endothelial function or mitochondrial health could significantly reduce the severity and death rates associated with sepsis.
Hybrid prodrug nanoassembly for hypoxia-triggered immunogenic chemotherapy and immune modulation.
J Control Release
January 2025
Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China; NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing 210009, China. Electronic address:
Tumor hypoxia is a critical driver of cancer progression, metastasis, and therapy resistance, posing significant challenges in effective cancer treatment. Hypoxia-activable prodrugs offer a promising strategy to target tumors in low-oxygen conditions, but their efficacy is often hindered by intrinsic properties and extrinsic cues. In this study, we developed a dual-prodrug nanoassembly system (CPPA) composed of a hypoxia-triggerable camptothecin (CPT)-based dimeric prodrug (CP) and a lipid-conjugated STAT3 antisense oligonucleotide (ASO) prodrug (PA), aiming to enhance tumor-targeted chemotherapy and overcome the immune evasion within the tumor microenvironment.
View Article and Find Full Text PDFAn immunoregulatory and metabolism-improving injectable hydrogel for cardiac repair after myocardial infarction.
Regen Biomater
November 2024
School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China.
The hypoxia microenvironment post-myocardial infarction (MI) critically disturbs cellular metabolism and inflammation response, leading to scarce bioenergy supplying, prolonged inflammatory phase and high risk of cardiac fibrosis during cardiac restoration. Herein, an injectable hydrogel is prepared by Schiff base reaction between fructose-1,6-bisphosphate (FBP)-grafted carboxymethyl chitosan (CF) and oxidized dextran (OD), followed by loading fucoidan-coated baicalin (BA)-encapsulated zein nanoparticles (BFZ NPs), in which immunoregulatory and metabolism improving functions are integrally included. The grafted FBP serves to enhance glycolysis and provide more bioenergy for cardiomyocytes survival under hypoxia microenvironment, and elevating cellular antioxidant capacity pentose phosphate pathway.
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