Silk Fibroin Hydrogel for Pulse Waveform Precise and Continuous Perception.

Precise and continuous monitoring of blood pressure and cardiac function is of great importance for early diagnosis and timely treatment of cardiovascular diseases. The common tests rely on on-site diagnosis and bulky equipments, hindering early diagnosis. The emerging hydrogels have gained considerable attention in skin bioelectronics by virtue of the similarities to biological tissues and versatility in mechanical, electrical, and biofunctional engineering.

Recent Advances in Microfluidics for Nucleic Acid Analysis of Small Extracellular Vesicles in Cancer.

Small extracellular vesicles (sEVs) are membranous vesicles released from cellular structures through plasma membrane budding. These vesicles contain cellular components such as proteins, lipids, mRNAs, microRNAs, long-noncoding RNA, circular RNA, and double-stranded DNA, originating from the cells they are shed from. Ranging in size from ≈25 to 300 nm and play critical roles in facilitating cell-to-cell communication by transporting signaling molecules.

Smart Design of Targeted Drug Delivery System for Precise Drug Delivery and Visual Treatment of Brain Gliomas.

In the treatment of glioma, which is one of the malignant tumors, although chemotherapy is used as the most common treatment method, it often suffers from low bioavailability. Therefore, improving the precision and efficiency of drugs is crucial in treating gliomas and a great challenge. Here, an advanced drug delivery system is reported for gliomas (CZQD@HA@DOX), which aggregates multiple features such as the susceptible imaging tracer property due to the use of CZQD and the targeting of HA to the receptor cluster 44 (CD44) of glioma cells, which provides the system with the functions of targeted enrichment and precise drug delivery at the tumor site.

Effective Hydrogel Vascular Patch Dual-Loaded with Cycloastragenol Nanostructured Lipid Carriers and Doxycycline for Repairing Extravascular Injury in Abdominal Aortic Aneurysm.

Endovascular aneurysm repair (EVAR) plays a crucial role in the treatment of abdominal aortic aneurysm (AAA) in the clinic, but the aneurysm remains in the patient's body after surgery, continuing to pose a risk of progression. Cycloastragenol (CAG) is proven to be an effective anti-AAA drug, and its vascular protective effects can be further improved when the hydrophobic CAG is encapsulated into nano-sized formulations to enhance its bioavailability. In this context, this study developed an extravascular patch hydrogel loaded with CAG nanostructured lipid carriers and a hydrophilic drug of doxycycline hydrochloride (DOX).

A Microenvironment-Responsive Graphdiyne-Iron Nanozyme Hydrogel with Antibacterial and Anti-Inflammatory Effect for Periodontitis Treatment.

Periodontitis is a chronic inflammatory disease caused by dental plaque, which leads to tooth loosening and shifting or even tooth loss. Current treatments, including mechanical debridement and antibiotics, often fail to eradicate recalcitrant biofilms and mitigate excessive inflammation. Moreover, these interventions can disrupt the oral microbiome, potentially compromising long-term treatment outcomes.

Ginsenoside Rd-Loaded Antioxidant Polymersomes to Regulate Mitochondrial Homeostasis for Bone Defect Healing in Periodontitis.

Periodontitis is the leading cause of tooth loss in adults. Initially triggered by bacterial infection, it is characterized by subsequent dysregulation of mitochondrial homeostasis, leading to ongoing loss of periodontal tissue. Mitophagic flux, a critical physiological mechanism for maintaining mitochondrial homeostasis, is compromised in periodontitis.

Remodeling the Inflammatory and Immunosuppressive Tumor Microenvironment for Enhancing Antiangiogenic Gene Therapy of Colorectal Cancer.

Fusobacterium nucleatum (Fn), as an intestinal pathogenic bacterium, is closely related to the occurrence, progression, and limited therapeutic efficacy of colorectal cancer (CRC). The presence of Fn within CRC communities induces an inflammatory and immunosuppressive microenvironment while promoting new vessel formation. Therefore, developing novel methods to efficiently eliminate Fn and enhance the therapeutic outcomes against Fn-associated CRC is of great significance.

Natural Macromolecule-Based Lubricative Catheter Coatings with Sustained Adaptive Antibacterial Property for Encrustation and Infection Prevention.

Catheter-associated urinary tract infection (CAUTI) are a global health burden. Moreover, the friction during urinary catheter placement also induces pain in patients. Therefore, there is a pressing need to develop effective antibacterial and lubricative coatings on the surface of urinary catheter.

Controllable Self-Assembly of V═O Metalloradical Complex with Intramolecular Charge Transfer for Enhanced NIR-II Fluorescence Imaging-Guided Photothermal Therapy.

Near-infrared second region (NIR-II) fluorescence imaging provides enhanced tissue penetration, achieving efficient NIR-II fluorescence and photoacoustic imaging (PA)-guided photothermal therapy (PTT) all in one material remains a challenging yet promising approach in cancer treatment. Herein, open-shell V═O metalloradical complex (VONc) is self-assembled into VONc nanospheres (VONc NPs). VONc NPs exhibit light absorption from 300 to 1400 nm, fluorescence spectra ranging from 900 to 1400 nm, and a distinct fluorescence signal even at 1550 nm.

LOX-1-Based Assembly Layer on Devices Surface to Promote Endothelial Repair and Reduce Complications for In Situ Interventional Plaque.

Rapid endothelialization and functional recovery are considered as promising methods to extend the long-term effectiveness of cardiovascular implant materials. LOX-1 participates in the initiation and development of atherosclerosis and is highly expressed in a variety of cells involved in atherosclerosis, hence it is feasible to accelerate the recovery of endothelial function and inhibit the development of existing plaques by regulating LOX-1. Herein, the surface is modified with Poly I, a LOX-1 inhibitor, using rich amino dendritic macromolecules (PAMAM) as the linker coating, to against the pathological microenvironment.

Functionalized Bone Implant Inspired by Lattice Defense Strategy: Grid Management, Precise and Effective Multiple-Prevention of Osteomyelitis Recurrence and Promote Bone Regeneration.

Osteomyelitis with a high recurrence rate. Timely-prevention can avoid severe consequence and death. However, conventional drug response-release has the disadvantages of unnecessary release and waste, causing ineffective prevention.

PSMA-Targeting Imprinted Nanogels for Prostate Tumor Localization and Imaging.

Prostate-specific membrane antigen (PSMA) is overexpressed in prostate cancer cells and tumor vasculature, making it an important biomarker. However, conventional PSMA-targeting agents like antibodies and small molecules have limitations. Antibodies exhibit instability and complex production, while small molecules show lower specificity and higher toxicity.

TP8, A Novel Chondroinductive Peptide, Significantly Promoted Neo-Cartilage Repair without Activating Bone Formation.

The repair of large cartilage defects remains highly challenging in the fields of orthopedics and oral and maxillofacial surgery. A chondroinductive agent is promising to activate endogenous mesenchymal stem cells (MSCs) so as to facilitate cartilage regeneration. In this study, we analyze the crystallographic data of the critical binding domain of transforming growth factor β3 (TGF-β3) with its type II receptor and successfully develop a novel chondroinductive peptide - TGF-β3-derived peptide No.

3D Bioprinting and Artificial Intelligence-Assisted Biofabrication of Personalized Oral Soft Tissue Constructs.

Regeneration of oral soft tissue defects, including mucogingival defects associated with the recession or loss of gingival and/or mucosal tissues around teeth and implants, is crucial for restoring oral tissue form, function, and health. This study presents a novel approach using three-dimensional (3D) bioprinting to fabricate individualized grafts with precise size, shape, and layer-by-layer cellular organization. A multicomponent polysaccharide/fibrinogen-based bioink is developed, and bioprinting parameters are optimized to create shape-controlled oral soft tissue (gingival) constructs.

Synergistic Enhancement of Antibacterial and Osteo-Immunomodulatory Activities of Titanium Implants via Dual-Responsive Multifunctional Surfaces.

Bone implant-associated infections and inflammations, primarily caused by bacteria colonization, frequently result in unsuccessful procedures and pose significant health risks to patients. To mitigate these challenges, the development of engineered implants with spatiotemporal regulation capabilities, designed to inhibit bacterial survival and modulate immune responses in the early stage, while promoting bone defect healing in the late stage is proposed. The implants are functionalized with ε-poly-l-lysine-phenylboronic acid (PP) via dynamic boronic ester bonds, which facilitate its release through a reactive oxygen species (ROS) and pH-responsive strategy, thereby establishing an antibacterial microenvironment on and around the implants.

Glutathione Induced In Situ Activation of Dual-Locked Cuproptosis Nanoamplifier with Glycolysis Metabolism Inhibition to Boost Cancer Immunotherapy.

Interference with glycolysis metabolism not only promotes the efficient sensitization of cuproptosis, but also amplifies cytotoxic T cell functions and proliferations, thus contributing to relieve immunosuppressive tumor microenvironment. However, the synergistic mechanism and the design of multicomponent nanoformulations involving these three pathways have not yet been explored. a copper-coordinated nanoassembly (designated as Cu-GM) is reported here that integrates a lactate dehydrogenase inhibitor, galloflavin (GF), with an immune checkpoint inhibitor, myricetin (MY), to boost cancer cuproptosis-immunotherapy.

Multitasking Asynchronous Collaborative Nanosystem for Diabetic Wound Healing Based on Hypoglycemic, Antimicrobial, and Angiogenesis-Promoting Effects.

A diabetic foot ulcer (DFU) is a common and serious complication of diabetes. This complication can result in amputation and death because of the several challenges associated with wound healing that can be attributed to the complex wound microenvironment, including biofilm infection, hyperglycemia, and diabetic angiopathy. Existing investigations on the wound-healing rate consider only one or two pathogenic factors, and therefore, despite the extensive research on these pathological microenvironments, there is an urgent need to optimize the wound-healing rate in patients with diabetic foot ulcers.

A Nattokinase-Loaded Nanozyme for Alleviating Acute Myocardial Infarction via Thrombolysis and Antioxidation.

Acute myocardial infarction (MI) induced by thrombus formation is a prevalent cardiovascular disorder, and thrombolytic therapy continues to be a principal treatment modality. Prior research indicates a substantial association among MI, thrombosis, and the activation of oxidative stress pathways. The effectiveness of current thrombolytic drugs is relatively constrained, and the need for innovative and versatile thrombolytic medications remains critical.

Streamlining the Highly Reproducible Fabrication of Fibrous Biomedical Specimens toward Standardization and High Throughput.

Soft nano- and microfiber-based polymer scaffolds bear enormous potential for their use in cell culture and tissue engineering since they mimic natural collagen structures and may thus serve as biomimetic adhesive substrates. They have, however, so far been restricted to small-scale production in research labs with high batch-to-batch variation. They are commonly produced via electrospinning or melt electrowriting and their delicate nature poses obstacles in detachment, storage, and transportation.

Targeting of Low-Immunogenic Poly(ethylene glycol) Nanoparticles for Photothermal-Enhanced Immunotherapy.

The assembly of low-immunogenic poly(ethylene glycol) nanoparticles (PEG NPs) for targeted delivery of therapeutics (i.e., mitoxantrone and imidazoquinoline) and improved photothermal-immunotherapy is reported.

5-Fluorouracil Loaded Prebiotic-Probiotic Liposomes Modulating Gut Microbiota for Improving Colorectal Cancer Chemotherapy.

The gut microbiota exerts inhibitory effects on the occurrence and progression of colorectal cancer (CRC) through various mechanisms. Compared to traditional microbiota regulation methods, prebiotics and probiotics demonstrate significant advantages in terms of safety and patient adaptability. Their synergy not only improves the intestinal environment but also enhances the host's anti-tumor immune response.

Tuning Helical Peptide Nanofibers as a Sublingual Vaccine Platform for a Variety of Peptide Epitopes.

Mucosal immune responses to vaccination are essential for achieving full protection against pathogens entering their host at mucosal sites. However, traditional parenteral immunization routes commonly fail to raise significant mucosal immunity. Sublingual immunization is a promising alternative delivery route to raise robust immune responses both systemically and at mucosal sites, and nanomaterial-based subunit vaccine platforms offer opportunities for raising epitope-specific responses.

Radiation-Resistant Bacteria Deinococcus radiodurans-Derived Extracellular Vesicles as Potential Radioprotectors.

The increasing use of radiation presents a risk of radiation exposure, making the development of radioprotectors necessary. In the previous study, it is investigated that Deinococcus radiodurans (R1-EVs) exert the antioxidative properties. However, the radioprotective activity of R1-EVs remains unclear.

Structurally Diverse Gelatin-Based Electrospun Membranes for Ultrasound Imaging.

Nanofiber membranes, produced through electrospinning, offer significant promise in the biomedical field due to their large surface area and strong mechanical properties. Their versatility is evident across applications such as drug delivery, wound healing, filtration, catalysis, and heritage conservation. However, the potential of electrospun membranes for advanced biomedical uses, like medical ultrasonic couplants, remains largely untapped.