Search results for "cell stress"

Advances in Targeting Signal Transduction Pathways

2012

// James A. McCubrey 1 , Linda S. Steelman 1 , William H. Chappell 1 , Lin Sun 1,2 , Nicole M. Davis 1 , Stephen L. Abrams 1 , Richard A. Franklin 1 , Lucio Cocco 3 , Camilla Evangelisti 4 , Francesca Chiarini 4 , Alberto M. Martelli 3,4 , Massimo Libra 5 , Saverio Candido 5 , Giovanni Ligresti 5 , Grazia Malaponte 5 , Maria C. Mazzarino 5 , Paolo Fagone 5 , Marco Donia 5 , Ferdinando Nicoletti 5 , Jerry Polesel 6 , Renato Talamini 6 , Jorg Basecke 7 , Sanja Mijatovic 8 , Danijela Maksimovic-Ivanic 8 , Michele Milella 9 , Agostino Tafuri 10 , Joanna Dulinska-Litewka 11 , Piotr Laidler 11 , Antonio B. D’Assoro 12 , Lyudmyla Drobot 13 , Kazuo Umezawa 14 , Giuseppe Montalto 15 , Melchiorre Cer…

Gold nanoparticle interactions with endothelial cells cultured under physiological conditions

2017

PEGylated gold nanoparticles (AuNPs) have an extended circulation time after intravenous injection in vivo and exhibit favorable properties for biosensing, diagnostic imaging, and cancer treatment. No impact of PEGylated AuNPs on the barrier forming properties of endothelial cells (ECs) has been reported, but recent studies demonstrated that unexpected effects on erythrocytes are observed. Almost all studies to date have been with static-cultured ECs. Herein, ECs maintained under physiological cyclic stretch and flow conditions and used to generate a blood-brain barrier model were exposed to 20 nm PEGylated AuNPs. An evaluation of toxic effects, cell stress, the release profile of pro-infla…

Impact of polymer-modified gold nanoparticles on brain endothelial cells: exclusion of endoplasmic reticulum stress as a potential risk factor

2016

A library of polymer-coated gold nanoparticles (AuNPs) differing in size and surface modifications was examined for uptake and induction of cellular stress responses in the endoplasmic reticulum (ER stress) in human brain endothelial cells (hCMEC/D3). ER stress is known to affect the physiology of endothelial cells (ECs) and may lead to inflammation or apoptosis. Thus, even if applied at non-cytotoxic concentrations ER stress caused by nanoparticles should be prevented to reduce the risk of vascular diseases and negative effects on the integrity of barriers (e.g. blood-brain barrier). We exposed hCMEC/D3 to twelve different AuNPs (three sizes: 18, 35, and 65 nm, each with four surface-modif…

Does SARS-CoV-2 Trigger Stress-InducedAutoimmunity by Molecular Mimicry? A Hypothesis.

2020

Viruses can generate molecular mimicry phenomena within their hosts. Why shouldsevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) not be considered one of these?Information in this short review suggests that it might be so and, thus, encourages research aimingat testing this possibility. We propose, as a working hypothesis, that the virus induces antibodiesand that some of them crossreact with host’s antigens, thus eliciting autoimmune phenomena withdevasting consequences in various tissues and organs. If confirmed, by in vitro and in vivo tests,this could drive researchers to find effective treatments against the virus.

Adding insulin glargine vs. NPH insulin to metformin results in a more efficient postprandial β-cell protection in individuals with type 2 diabetes

2010

AIM Postprandial release of intact proinsulin (IP) is an independent marker for beta-cell dysfunction in patients with type 2 diabetes. This open-label, parallel-group, two-arm, pilot study compared the beta-cell protective effect of adding insulin glargine (GLA) vs. NPH insulin to ongoing metformin. MATERIAL AND METHODS Overall, 28 insulin-naive type 2 diabetes subjects (mean +/- SD age, 61.5 +/- 6.7 years; diabetes duration, 9.8 +/- 6.5 years; HbA1c, 7.1 +/- 0.5%; BMI, 30.7 +/- 4.3 kg/m(2)) treated with metformin and sulfonylurea were randomized to add once-daily GLA or NPH at bedtime. At baseline and after 3 months, subjects received a standardized breakfast, lunch and dinner, with pre- …

Immunohistochemical expression of apoptotic factors, cytokeratins, and metalloproteinase-9 in periapical and epithelialized gingival lesions

2012

Bellmann K, 2010, CELL STRESS CHAPERON, V15, P101, DOI 10.1007-s12192-009-0126-9; Cappello Francesco, 2011, Front Biosci (Schol Ed), V3, P341, DOI 10.2741-s155; Cappello F, 2006, CANCER, V107, P2417, DOI 10.1002-cncr.22265; Cappello F, 2002, EUR J HISTOCHEM, V46, P199; Carneiro E, 2009, ORAL SURG ORAL MED O, V107, P127, DOI 10.1016-j.tripleo.2008.07.030; Chandra D, 2007, J BIOL CHEM, V282, P31289, DOI 10.1074-jbc.M702777200; Fujita Y, 2011, ODONTOLOGY, V100, P215; Garcia Celia Carrillo, 2007, Med Oral Patol Oral Cir Bucal, V12, pE585; Garcia CC, 2009, ORAL SURG ORAL MED O, V107, pE43, DOI 10.1016-j.tripleo.2008.12.002; Gregory CD, 2011, J PATHOL, V223, P177, DOI 10.1002-path.2792; Gupta S, …

Editorial: Cell Stress, Metabolic Reprogramming, and Cancer

2018

Identification of new members of metallothionein gene family in sea urchin

2011

Heavy metals are common marine pollutants that emanate from such sources as industrial and sewage treatment discharges and anti-fouling paints. Cadmium (Cd2+) serves no essential function in biological organisms and it is a highly toxic and carcinogenic metal. In Paracentrotus lividus sea urchin embryos cadmium causes development arrest or severe malformations. At lower doses, cadmium activates different responses (HSPs synthesis, autophagic or apoptotic processes) that can allow embryo survival. This study was conducted to elucidate the gene transcription activation/upregulation or repression/downregulation inducted in sea urchin embryos grown under cadmium stress. Comparison between trans…

Cell Stress, Metabolic Reprogramming, and Cancer

2018

The hallmarks of cancer comprise six biological capabilities acquired during the multistep development of human tumors: sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis, and activating invasion and metastasis (1). Mitochondria, beyond being the site of aerobic respiration, are at the crossroads of a variety of metabolic and signaling pathways resulting key regulatory organelles in cell life and death decision. Thus, it is no surprise that genomic, functional, and structural mitochondrial alterations have been associated with cancer and that mitochondria have become a pharmacological target in cancer…

Heat shock protein 70 dampens the inflammatory response of human PDL cells to mechanical loading in vitro

2019

BACKGROUND AND OBJECTIVE Previously, we demonstrated an inflammatory response of human PDL (hPDL) cells to mechanical loading. The cellular reaction was dampened by heat pre-treatment suggesting a protective role for heat shock proteins (HSP) during stress-induced ischemia. Here we explored if HSP70, which has already been documented in the pressure zone of tooth movement, might be regulatorily involved in the attenuation of the inflammatory response. MATERIALS AND METHODS Fifth passage hPDL cells were mechanically loaded in the presence of the HSP70 inhibitor VER155008. Cell morphology, HSP70 expression, viability, IL-6 and IL-8 expression were determined by means of microscopy, realtime-P…