Two adaptor proteins prevent cells from overreacting to bacterial lipopolysaccaride (LPS), report Shinohara et al. on page 333. Dok-1 and Dok-2 dampen intracellular signals from the LPS receptor, Toll-like receptor 4 (TLR4), which may help explain how cells mount a potent response to invading bacteria without also triggering destructive inflammatory ...
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TLR2 and TLR4 in Ischemia Reperfusion Injury [PDF]
Ischemia reperfusion (I/R) injury refers to the tissue damage which occurs when blood supply returns to tissue after a period of ischemia and is associated with trauma, stroke, myocardial infarction, and solid organ transplantation. Although the cause of this injury is multifactorial, increasing experimental evidence suggests an important role for the ...
A. E. Parker+3 more
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The tumor microenvironment is a dynamic, multifaceted complex system of interdependent cellular, biochemical, and biophysical components. Three‐dimensional in vitro models of the tumor microenvironment enable a better understanding of these interactions and their impact on cancer progression and therapeutic resistance.
Salma T. Rafik+3 more
wiley +1 more source
Matrix: a complex amalgam of structures and functions in tumor microenvironment
The matrix is a dynamic, intricate three‐dimensional mesh of biomolecules with both structural and functional properties. This review deals with the complexity of this ‘molecular amalgam’ in the tumor microenvironment and highlights its importance in the maintenance and evolution of tumors by describing certain matrix biomolecules, such as ...
Spyros S. Skandalis+3 more
wiley +1 more source
Placental-mediated increased cytokine response to lipopolysaccharides: a potential mechanism for enhanced inflammation susceptibility of the preterm fetus. [PDF]
BackgroundCerebral palsy is a nonprogressive motor impairment syndrome that has no effective cure. The etiology of most cases of cerebral palsy remains unknown; however, recent epidemiologic data have demonstrated an association between fetal neurologic ...
Belkacemi, Louiza+4 more
core +1 more source
Toll-like receptors (TLRs) are a well-known family of pattern recognition receptors that play an important role in a host immune system. TLR triggering leads to the induction of pro-inflammatory cytokines and chemokines, driving the activation of both ...
Chung-Yi Chen, C. Kao, Chi-Ming Liu
semanticscholar +1 more source
Epithelial TLR4 signaling activates DUOX2 to induce microbiota-driven tumorigenesis.
BACKGROUND & AIMS Chronic colonic inflammation leads to dysplasia and cancer in patients with inflammatory bowel disease (IBD). We have described the critical role of innate immune signaling via toll-like receptor 4 (TLR4) in the pathogenesis of ...
Juan F Burgueño+16 more
semanticscholar +1 more source
HMGB1 derived from the pyroptotic environment in Hirschsprung‐associated enterocolitis mediates the formation of macrophage extracellular traps through TLR4 ‐p38 MAPK/p65 NF‐kB signaling pathways. Macrophage extracellular traps induce increased ROS production and pyroptosis of colonic epithelial cells.
Rui Zhang+6 more
wiley +1 more source
Chronic Trypanosoma cruzi infection potentiates adipose tissue macrophage polarization toward an anti-inflammatory M2 phenotype and contributes to diabetes progression in a diet-induced obesity model [PDF]
Chronic obesity and Chagas disease (caused by the protozoan Trypanosoma cruzi) represent serious public health concerns. The interrelation between parasite infection, adipose tissue, immune system and metabolism in an obesogenic context, has not been ...
Andrada, Marta Cecilia+8 more
core +4 more sources
Abrupt Expression of TLR4 in TLR4-Deficient Macrophages Imposes a Selective Disadvantage: Genetic Evidence for TLR4-Dependent Responses to Endogenous, Nonmicrobial Stimuli [PDF]
Abstract TLR4 is crucial for macrophage responses to LPS. It is less clear whether TLR4 may also transduce signals from host factors, and if so, with what consequences. Immortalized bone marrow-derived macrophage cell lines, termed T4Cr and T4ko, were established from TLR4null strains, C57BL/10ScNCr and TLR4 knockout mice, respectively ...
Zhaoying Xiang+5 more
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