Results 61 to 70 of about 264 (211)

A Dual‐Phase Exosomal Nanotherapy Enhances Continual Efferocytosis by Coordinating Checkpoint Inhibition and Metabolic Reprogramming in Atherosclerosis

Advanced Science, EarlyView.
Here we developed Am@SExo, a dual‐functional engineered exosome that coordinates CD47–SIRPα checkpoint blockade with Arg1 mRNA–mediated metabolic reprogramming. Surface SIRPα promotes recognition of apoptotic cells and plaque targeting, while Arg1 expression enhances arginine–ornithine metabolism, Rac1 activation, and actin remodeling in macrophages ...
Danwen Zheng, Shiteng Cai, Jinfeng Gao, Sheng Zhao, Bohan Wei, Xueyi Weng, Zhengmin Wang, Qiaozi Wang, Qiyu Li, Chengzhi Han, Weiyan Li, Yiwen Tan, Yuyuan Fu, Meng Ji, Zheyong Huang, Yanan Song, Juying Qian, Junbo Ge   +17 more
wiley   +1 more source

A Periosteum‐Inspired Janus Piezoelectric Scaffold Using Bioenergetic‐Driven H‐Type Vascularization for Diabetic Bone Regeneration

Advanced Science, EarlyView.
A periosteum‐inspired Janus piezoelectric scaffold converts micromechanical forces into electrical signals and synergizes with controlled resveratrol release. This dual action reprograms endothelial metabolism, drives H‑type vessel formation, and restores bone–vessel coupling in diabetic bone defects.
Kai Wang, Kai Jiang
wiley   +1 more source

Degenerate Umbilic Points of Analytic Surfaces

Umbilics are points of a surface embedded in three space where normal curvatures are independent of direction. The (in)famous Carathéodory Conjecture states that a compact simply connected embedded surface has at least two umbilic points. A counterexample to this conjecture would be a surface whose principal foliation has index two at a single umbilic.
openaire   +2 more sources

An umbilical point on a non-real-analytic surface

Hiroshima Mathematical Journal, 2003
The index of an isolated umbilical point on a surface in three-dimensional Euclidean space is studied. The main attention is paid to the following index conjecture: the index of an isolated umbilical point is not more than one. This conjecture is motivated by studying constant mean curvature surfaces whose isolated umbilical points are always of ...
openaire   +3 more sources

Cholesterol Laundry of Cell Membrane and Fatty Liver by Detergent Liposomes to Improve Anti‐Cancer Drug Responsiveness of Patient Liver Tissues

Advanced Science, EarlyView.
Cholesterol‐enriched plasma membranes in hepatocellular carcinoma impede drug penetration. Cholesterol (+)‐liposomes act as membrane‐specific detergents, extracting cholesterol and reducing barrier function without cytotoxicity. Following endocytosis, cholesterol transfers from endosomes to liposomes and is metabolized in the ER.
Chansik Kim, Joo Kyung Noh, Sewoom Baek, Seung Eun Yu, Jueun Kim, Seongyo Lee, Youngji Oh, Dai Hoon Han, Seyong Chung, Hak‐Joon Sung   +9 more
wiley   +1 more source

A Blood‐Derived Double‐Network Hydrogel with Robust Wet Adhesion for Keratinized Mucosa Regeneration via Neutrophil Phenotype Reprogramming and Mechanophysical Niche Modulation

Advanced Science, EarlyView.
The iPRF‐MA/Alg‐NHS/Lut@EGCG (PGAE) double‐network hydrogel achieves durable wet adhesion in the oral environment. It simultaneously reprograms neutrophils from NETosis to phagocytosis for biofilm clearance, and activates the FAK‐RhoA‐YAP mechanotransduction pathway in gingival fibroblasts to drive extracellular matrix remodeling, thereby promoting ...
Sicong Ren, Xinting Yang, Jingxia Chen, Yihan Wang, Jian Feng, Jing Zhou, Jiaxin Luo, Jingjie Zhai, Quan Lin, Yanmin Zhou   +9 more
wiley   +1 more source

Vascularized Liver‐on‐a‐Microsphere Reveals Alanine‐Glucose Metabolism‐Driven Regulation of Liver Function and Injury

Advanced Science, EarlyView.
A vascularized liver‐on‐a‐microsphere system is developed to recreate lobule‐like cellular organization and endothelial barrier function within compartmentalized hydrogel particles. The platform enhances hepatic performance and reveals alanine‐glucose cycle activation linked to improved detoxification capacity, offering a high‐throughput microscale ...
Jingyang Li, Zengnan Wu, Yingrui Zhang, Shulang Chen, Yongning Lin, Shiyu Chen, Tong Xu, Xianli Meng, Yi Zhang, Jin‐Ming Lin   +9 more
wiley   +1 more source

CMC-surfaces, flat structures and umbilical points

, 2001
A short proof of the Caratheodory conjecture about index of an isolated umbilic on the convex 2-dimensional sphere is suggested. The argument is based on the study of geodesic lines near cone-type singularity of a metric induced by holomorphic quadratic differentials.
openaire   +2 more sources

DHODH Drives Sunitinib Resistance Via a Non‐Enzymatic Mechanism by Inhibiting TRIM28 Ubiquitination and Consequent VEGFA Activation in RCC

Advanced Science, EarlyView.
This non‑enzymatic function of DHODH drives sunitinib resistance by competing with TRIM37 to block TRIM28 ubiquitination, thereby stabilizing TRIM28 and activating VEGFA transcription. Disrupting the DHODH–TRIM28 interaction with lisaftoclax restores drug sensitivity.
Shijie Qian, Shihang Pu, Zhipeng Xu, Yiheng Ding, Ling Jin, Baochao Li, Qi Li, Xiaohai Xi, Zengjun Wang, Jiajun Xing, Aiming Xu   +10 more
wiley   +1 more source

Tungsten-based nanoparticles as contrast agents for liver tumor detection using dual-energy computed tomography. [PDF]

Biomater Sci, 2023
Ji X, Zhu L, Hsu JC, Wang H, Zhou J, Wang Q, Li Y, Cai W, Ni D, Wu Z.   +9 more
europepmc   +1 more source