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Suppression of human prostate tumor growth in mice by a cytolytic D-, L-amino Acid Peptide: membrane lysis, increased necrosis, and inhibition of prostate-specific antigen secretion.

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Gene-encoded host defense peptides are used as part of the innate immunity, and many of them act by directly lysing the cell membrane of the pathogen. A few of these peptides showed anticancer activity in vitro but could not be used in vivo because of their inactivation by serum. We designed a

A continuous fluorimetric assay for tumor necrosis factor-alpha converting enzyme.

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Fluorogenic peptide substrates with fluorophore/quencher-capped ends have found extensive use in monitoring protease activity in the screening of small-molecule libraries for protease inhibitors. We report here the identification and characterization of a fluorogenic substrate for tumor necrosis

Protection efficacy of the Brucella abortus ghost vaccine candidate lysed by the N-terminal 24-amino acid fragment (GI24) of the 36-amino acid peptide PMAP-36 (porcine myeloid antimicrobial peptide 36) in murine models.

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Brucella abortus cells were lysed by the N-terminal 24-amino acid fragment (GI24) of the 36-amino acid peptide PMAP-36 (porcine myeloid antimicrobial peptide 36). Next, the protection efficacy of the lysed fragment as a vaccine candidate was evaluated. Group A mice were immunized with sterile PBS,

Production of polyclonal antibodies to feline tumor necrosis factor.

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Two 13-amino-acid peptides were synthesized based on the putative feline tumor necrosis factor (FeTNF) sequence. The synthesized peptides were conjugated to keyhole limpet hemocyanin, emulsified in complete Freund's adjuvant, and injected into rabbits. The gene for FeTNF was cloned into the FLAG

A novel endotoxin antagonist attenuates tumor necrosis factor-alpha secretion.

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Twenty-seven amino acid peptides with sequences corresponding to a proposed endotoxin binding region of bactericidal permeability increasing protein (BPI):1) inhibit lipopolysaccharide induced macrophage tumor necrosis factor-alpha (TNF-alpha) secretion, 2) have bactericidal activity against

Tumor necrosis factor-alpha-induced sickness behavior is impaired by central administration of an inhibitor of c-jun N-terminal kinase.

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BACKGROUND Tumor necrosis factor-alpha (TNFalpha) acts within the brain to induce sickness behavior, but the molecular mechanisms are still unknown. TNFalpha binding induces receptor trimerization, activation of c-Jun N-terminal kinase (JNK), and induction of downstream transcription

Down-modulation of epidermal growth factor receptor affinity in fibroblasts treated with interleukin 1 or tumor necrosis factor is associated with phosphorylation at a site other than threonine 654.

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Interleukin 1 or tumor necrosis factor alpha can cause a transient down-modulation of epidermal growth factor (EGF) binding to quiescent fibroblast monolayers; the effect results from a reduction in EGF receptor (EGF-R) affinity and appears to be mediated by a protein kinase C (PKC)-independent

The expression of endothelin-1 and its binding sites in mouse skin increased after ultraviolet B irradiation or local injection of tumor necrosis factor alpha.

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Endothelin (ET)-1 is a 21-amino acid peptide which has vasoconstrictor and growth regulatory activity. Recently, cultured keratinocytes have been reported to express ET-1 and its receptor when irradiated by ultraviolet (UV) B. In order to further understand the role of ET-1 in vivo during

Melittin, a major component of bee venom, sensitizes human hepatocellular carcinoma cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced apoptosis by activating CaMKII-TAK1-JNK/p38 and inhibiting IkappaBalpha kinase-NFkappaB.

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Promoting apoptosis is a strategy for cancer drug discovery. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) induces apoptosis in a wide range of malignant cells. However, several cancers, including human hepatocellular carcinoma (HCC), exhibit a major resistance to TRAIL-induced

Grouper MAVS functions as a crucial antiviral molecule against nervous necrosis virus infection.

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Mitochondrial antiviral signaling protein (MAVS), also known as IPS-1, VISA, and Cardif, has been well studied for its crucial roles in the mammalian interferon immune response. To better understand the actions of MAVS in fish immune response, a MAVS homolog from orange spotted grouper (Epinephelus

Deletion of the infectious spleen and kidney necrosis virus ORF069L reduces virulence to Mandarin fish Siniperca chuatsi.

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Mandarin fish (Siniperca chuatsi) is a significant cultured species with high added value in China. With the expansion of farming, diseases of mandarin fish such as infectious spleen and kidney necrosis virus (ISKNV) diseases are becoming more and more serious. Human endogenous retrovirus subfamily

Toxicity assessment of repeated intravenous injections of arginine-glycine-aspartic acid peptide conjugated CdSeTe/ZnS quantum dots in mice.

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BACKGROUND Nanotechnology-based near-infrared quantum dots (NIR QDs) have many excellent optical properties, such as high fluorescence intensity, good fluorescence stability, and strong tissue-penetrating ability. Integrin αvβ3 is highly and specifically expressed in tumor angiogenic vessel

Insertion of a 59 amino acid peptide in Salmonella Typhimurium membrane results in loss of virulence in mice.

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We demonstrated previously that expression of a single trans-membrane region of the Δ(12) -desaturase gene of Synechocystis sp. PCC 6803 in Salmonella enterica serovar Typhimurium (Salmonella Typhimurium) altered the membrane physical state of this pathogen, induced a significant change in the

The lectin-like domain of tumor necrosis factor-alpha increases membrane conductance in microvascular endothelial cells and peritoneal macrophages.

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Herein, we show that TNF exerts a pH-dependent increase in membrane conductance in primary lung microvascular endothelial cells and peritoneal macrophages. This effect was TNF receptor-independent, since it also occurred in cells isolated from mice deficient in both types of TNF receptors. A TNF

Biodistribution and toxicity assessment of intratumorally injected arginine-glycine-aspartic acid peptide conjugated to CdSe/ZnS quantum dots in mice bearing pancreatic neoplasm.

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Quantum dots (QDs) conjugated with arginine-glycine-aspartic acid (RGD) peptides (which are integrin antagonists) are novel nanomaterials with the unique optical property of high molar extinction coefficient, and they have potential utility as photosensitizers in photodynamic therapy (PDT). Our

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