Results 51 to 60 of about 347,248 (305)

COVID-19 Patients Upregulate Toll-like Receptor 4-mediated Inflammatory Signaling That Mimics Bacterial Sepsis

bioRxiv, 2020
Observational studies of the ongoing coronavirus disease 2019 (COVID-19) outbreak suggest that a cytokine storm is involved in the pathogenesis of severe illness. However, the molecular mechanisms underlying the altered pathological inflammation in COVID-
K. Sohn, Sung-Gwon Lee, H. Kim, Shinhye Cheon, Hyeongseok Jeong, Jooyeon Lee, I. Kim, Prashanta Silwal, Young Jae Kim, Chungoo Park, Yeon-Sook Kim, E. Jo   +11 more
semanticscholar   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Toll-like receptor 4 promotes proliferation and apoptosis resistance in human papillomavirus–related cervical cancer cells through the Toll-like receptor 4/nuclear factor-κB pathway

Tumor Biology, 2017
Toll-like receptor 4 is overexpressed in various tumors, including cervical carcinoma. However, the role of Toll-like receptor 4 in cervical cancer remains controversial, and the underlying mechanisms are largely elusive.
Ninghong Jiang, Feng Xie, Qisang Guo, Ming-Qing Li, Jingjing Xiao, Long Sui   +5 more
doaj   +1 more source

Oligosaccharides of Hyaluronan Activate Dendritic Cells via Toll-like Receptor 4

Journal of Experimental Medicine, 2002
Low molecular weight fragmentation products of the polysaccharide of Hyaluronic acid (sHA) produced during inflammation have been shown to be potent activators of immunocompetent cells such as dendritic cells (DCs) and macrophages.
C. Termeer, F. Benedix, J. Sleeman, C. Fieber, Ursula Voith, T. Ahrens, K. Miyake, M. Freudenberg, C. Galanos, J. Simon   +9 more
semanticscholar   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Potential role of interleukin-33 in systemic lupus erythematosus by regulating toll like receptor 4

European Journal of Inflammation, 2022
Introduction Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by immune activation and multi-immunologic phenotypes. Interleukin-33 (IL-33) has been shown to be a critical and pleiotropic immunoregulatory mediator in the ...
Yi Li, Yijia Shao, Yan He, Qiugen Li, Lihua Duan   +4 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Saturated Fatty Acids, but Not Unsaturated Fatty Acids, Induce the Expression of Cyclooxygenase-2 Mediated through Toll-like Receptor 4*

Journal of Biological Chemistry, 2001
Results from our previous studies demonstrated that activation of Toll-like receptor 4 (Tlr4), the lipopolysaccharide (LPS) receptor, is sufficient to induce nuclear factor κB activation and expression of inducible cyclooxygenase (COX-2) in macrophages ...
J. Y. Lee, K. Sohn, S. Rhee, D. Hwang
semanticscholar   +1 more source

Toll9 from Bombyx mori functions as a pattern recognition receptor that shares features with Toll-like receptor 4 from mammals

Proceedings of the National Academy of Sciences of the United States of America, 2021
Significance Toll/Toll-like receptors are key regulators of the innate immune system in both invertebrates and vertebrates. However, while mammalian Toll-like receptors function as pattern recognition receptors that directly bind microbe-associated ...
Ruonan Zhang, Xiaofeng Li, Jie Zhang, Yanjun Li, Yuan Wang, Yuhang Song, Feifei Ren, Huiyu Yi, Xiaojuan Deng, Yangjin Zhong, Yang Cao, M. Strand, Xiao-qiang Yu, Wanying Yang   +13 more
semanticscholar   +1 more source

Combining antibody conjugates with cytotoxic and immune‐stimulating payloads maximizes anti‐cancer activity

Molecular Oncology, EarlyView.
Methods to improve antibody–drug conjugate (ADC) treatment durability in cancer therapy are needed. We utilized ADCs and immune‐stimulating antibody conjugates (ISACs), which are made from two non‐competitive antibodies, to enhance the entry of toxic payloads into cancer cells and deliver immunostimulatory agents into immune cells.
Tiexin Wang, Dong Jun Koo, Peter M. Tessier, Greg M. Thurber   +3 more
wiley   +1 more source