Transiently Activated Human Regulatory T Cells Upregulate BCL-XL Expression and Acquire a Functional Advantage in vivo

In this study, we compare the ability of suboptimal doses of freshly sorted and in vitro expanded human CD127loCD25+CD4+ Tregs to promote human skin allograft survival and demonstrate that higher effectiveness of expanded Tregs can be compensated by transient activation of freshly isolated Tregs. Recently-activated Tregs are characterized by an increased expression of Treg functional markers and better in vitro and in vivo survival, correlating with an increased expression of anti-apoptotic BCL-XL. The ability to enhance Treg function without long in vitro culture may be of value in the treatment of specific immunopathological situations. Materials and Methods Mice Immunodeficient BALB/c Rag2−/− IL2rγ−/− mice were purchased from Jackson Laboratories (Maine, USA) and housed under specific pathogen-free conditions in the Biomedical Services Unit at the John Radcliffe Hospital (Oxford, UK). Animals were treated with strict accordance to the UK Animals (Scientific Procedures) Act of 1986 and under PPL P8869535A. Mice between ages of 6 and 12 weeks were used. Procurement of Human Skin and Blood Healthy skin and blood was donated from patients undergoing plastic surgery procedures as previously described (13) and with full informed consent under approval number 07/H0605/130 from the Oxfordshire Research Ethics Committee B. PBMCs were isolated from buffy coats or leukocyte cones from healthy volunteers (NHSBT, UK). Skin Grafting Skin grafting was...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research

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This article presents a unique 3D biocompatible Aluminum-based quantum structure (QS) for in vitro cancer detection using Surface Enhanced Raman Scattering (SERS). The Al-based QSs fabricated using ultrashort pulsed laser are of two distinct surface characters, wrinkled and smooth spherical. The limit of detection for chemical sensing of Crystal Violet and Rhodamine 6G by the Al-QS was driven up to single molecule sensing (femtomolar concentration). Biological sensing of cysteine, a disease biomarker and carcinoembryonic antigen (CEA), a cancer biomarker was also tested by the Al-QS. The ability of in vitro cell detection ...
Source: Biosensors and Bioelectronics - Category: Biotechnology Source Type: research
Publication date: Available online 14 December 2019Source: Biotechnology ReportsAuthor(s): Seema Mehandia, S.C. Sharma, Shailendra Kumar AryaAbstractA laccase producing new bacterial strain (Alcaligenes faecalis XF1) was isolated from green site of Chandigarh (India) by standard screening method. Nutrient broth medium containing 0.2 mM CuSO4 was used for the production of laccase. Maximum production (110 U/ml) was achieved after four days of incubation. The extracellular laccase from the medium was purified by simple salt precipitation and ion exchange technique to get 3.8 fold purified protein with 1637.8 U/mg spec...
Source: Biotechnology Reports - Category: Biotechnology Source Type: research
In this study, four different weight% of Punica granatum fruit peel extract were used as green stabilizers to synthesize IONPs followed by a series of characterization experiments and in vitro anticancer evaluation. Results revealed that all synthesized IONPs have high degree of crystallinity and purity. The optimum saturation magnetization, and hydrodynamic size were found to be ∼69 emu.g−1, and 26.52 nm, respectively. Morphological studies demonstrated that adding peel extract decreased size of NPs with the average particle size below 11 nm. Cytotoxicity assay showed that the IONPs were not react...
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research
Publication date: 15 March 2020Source: Journal of Molecular Structure, Volume 1204Author(s): A.D. Herrera-España, J. Us-Martín, S. Hernández-Ortega, G. Mirón-López, L. Quijano, J.R. Villanueva-Toledo, G.J. Mena-RejónAbstractThe structural modification of natural products has shown to be a remarkable tool in the generation of novel bioactive molecules. Herein, the synthesis, structural analysis and anticancer activity of the novel triterpenoid thiazole 3 is reported. The synthesis was carried out through the bromination of ochraceolide A (1) and the subsequent heterocyclic condensat...
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research
Publication date: Available online 14 December 2019Source: Journal of Molecular StructureAuthor(s): Katia Le Barbu-Debus, Debora Scuderi, Valeria Lepère, Anne ZehnackerAbstractThe mixed sodium core dimers of dimethyl-l-tartrate (Lmt) and the two enantiomers of diisopropyl tartrate (Lipt and Dipt) are studied by mass spectrometry coupled with laser vibrational spectroscopy. Infra-Red Multiple Photon Dissociation (IRMPD) spectra of the two diastereomer sodium-core dimers, namely, LmtLiptNa+ and LmtDiptNa+, are identical in the fingerprint region but show a slight difference in the OH stretch region. Comparison to ab i...
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research
Publication date: Available online 15 December 2019Source: Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular BiologyAuthor(s): Shengming Sun, Ying Wu, Ivan Jakovlić, Hongtuo Fu, Xianping Ge, Hui Qiao, Wenyi Zhang, Shubo JinAbstractThe oriental river prawn, Macrobrachium nipponense, is a commercial freshwater prawn species in China. It is highly sensitive to hypoxia, and this has posed a challenge to its intensive culturing. To date, the effects of hypoxia on reproduction in female prawns are not entirely clear, as are the underlying mechanisms of the effects of hypoxia. In this work, comparative t...
Source: Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology - Category: Molecular Biology Source Type: research
In this study, two groups (4% PHB supplementation diets and control with basal diets) with 30-day feeding were set to study the effect of PHB supplementation on immune-related gene expression by qRT-PCR, time-course CyHV-2 replication in vivo by qPCR and intestinal microbiota by illumine high-throughput sequencing. PHB supplementation significantly up-regulated transcriptional levels of eight immune-related genes, decreased cumulative mortality of gibel carp and early CyHV-2 replication in spleen in vivo (P 
Source: Fish and Shellfish Immunology - Category: Biology Source Type: research
ConclusionInfliximab was not efficient in reducing depressive symptoms according to the HAM-D, only when the patients already had increased inflammatory genes, including TNF and C-reactive protein (CRP).
Source: Pharmacology Biochemistry and Behavior - Category: Biochemistry Source Type: research
Publication date: Available online 14 December 2019Source: Chemico-Biological InteractionsAuthor(s): Ryan N. Serio, Lorraine J. GudasAbstractEthanol (EtOH) is a recreationally ingested compound that is both teratogenic and carcinogenic in humans. Because of its abundant consumption worldwide and the vital role of stem cells in the formation of birth defects and cancers, delineating the effects of EtOH on stem cell function is currently an active and urgent pursuit of scientific investigation to explicate some of the mechanisms contributing to EtOH toxicity. Stem cells represent a primordial, undifferentiated phase of devel...
Source: Chemico Biological Interactions - Category: Biochemistry Source Type: research
Publication date: Available online 14 December 2019Source: Sensors and Actuators B: ChemicalAuthor(s): Xinxin Shi, Yalei Hu, Hong-Min Meng, Jie Yang, Lingbo Qu, Xiao-Bing Zhang, Zhaohui LiAbstractIntracellular polarity has a large impact on the activity of a series of biomolecules or maintain the function of particular domains. Therefore, monitoring the changing of intracellular polarity can great improve the understanding its functions in living cell level. Herein, by employing p-phenylenediamine as precursor, we prepared a red emissive carbon dots based nanoprobe for real-time sensing polarity in living cells. With the i...
Source: Sensors and Actuators B: Chemical - Category: Chemistry Source Type: research
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