báo cáo khoa học: "Dynamics and mechanisms of quantum dot nanoparticle cellular uptake" pps

... binding of quantum dots in live cell assays. Bioconjug Chem 2005, 16:1488-1494. doi: 10.1186/1477-3155-8-13 Cite this article as: Xiao et al., Dynamics and mechanisms of quantum dot nanoparticle cellular ... toxicity and fate in cells and clearly emphasizes the importance of strict environmental control of QDs and other nanoparticles as well. Conclusions Surface c...

Ngày tải lên: 11/08/2014, 00:22

... [98,312]. On the other hand, the timing of radical rearrangement (radical clocks) may depend critically on the tightness of the radical cage and the ensemble of steric and electronic forces experienced ... rearrange in c ompetition with consumma- Scheme 9. Epoxidation of menadione (A) and deformylation of an enolized mimic of the A/B ring moiety of androstenedione (B) by [...

Ngày tải lên: 19/02/2014, 16:20

... Schematic diagram of the density of states (DOS) in the conduction band (CB) and valence band (VB) for a (a) double heterostructure, (b) quantum well, (c) quantum wire, and (d) quantum box laser Nanoscale ... well-developed dots and thus a red shift of the QD PL band. When the dot size becomes large, different processes occur such as the coalescence of the dots and/ or...

Ngày tải lên: 22/06/2014, 22:20

... precise picture of water at the surface of the protein, we looked at the number of water molecules within a specific layer of 0.25 nm from the surface of the protein (Fig. 3), and the ratio of Fig. 2. ... (weight of water ⁄ weight of protein). The ability of organic solvents to ‘strip off’ water from the enzyme surface was clearly dependent on the nature of the organic so...

Ngày tải lên: 16/03/2014, 10:20

... and Gal-1, expression of immune inhibitor ligands (B7-H1 -H3 and -H4), up- regulation of IDO and/ or ARG activity and/ or expansion of cellular immunosuppression by MDSCs and Foxp3 Treg cells could ... stimulation of cytotoxic CD8 + T cells and NK cells; Up-regulation of pro-apoptotic ligands, such as Fas L and RCAS1 may directly induce anti- carcinoma immune cell deat...

Ngày tải lên: 10/08/2014, 10:21

... pulmonary endothelium. Production of IL-8 and other chemokines within the lung leads to recruitment of neutrophils and of other leukocytes into the interstitial and alveolar spaces of the lung. Activated ... expression of subunits of the sodium channel and of the Na,K-ATPase pump [24]. These mechanisms are important in the role of beta-2 agonists in the clearance of...

Ngày tải lên: 12/08/2014, 20:20

... with deficiency in thyroid and growth hormones and in vasopressin. Necrosis or haemorrhage of the hypothalamus or of the pituitary gland have been reported in sepsis as a result of prolonged hypotension ... weight of CBG by about 5 kDa and destroyed its steroid-binding activity. These findings suggest that CBG-elastase release of cortisol allows for localized delivery of cor...

Ngày tải lên: 12/08/2014, 20:20

... with binding of both MOF and Tip60 (equivalent to Esa1 in yeast NuA4) [124,130]. However, in human cells depletion of MOF, but not Tip60, results in reduced global levels of AcH4-K16 and defective ... acetylation and deacetyla- tion, and transient recruitment of remodellers and transcription factors. A cycle of transcription commences with the recruit- ment of transcript...

Ngày tải lên: 14/02/2014, 18:20

... is involved in various cellular functions, including cell proliferation, differentiation and migration [13]. Recently, the mechanisms of transcription and the func- tional roles of miRNAs associated ... few have focused upon the role of miRNAs in regulatory network of various cell signaling pathways. We summarize the current knowledge of the interdependence of miRNA and...

Ngày tải lên: 14/02/2014, 19:20

... in order to secrete IL-1b and TNF-a. Hypoxia ⁄ SD induces the transcription and secretion of IL-10 Because of the lack of secretion of the inflammatory cytokines IL-1b and TNF-a from hypoxia ⁄ ... presence and absence of IL-10. *P < 0.05 and **P < 0.01 versus Cont group. (D) Representative western blots for collagen I and III in the presence and absence of 0.1 l...

Ngày tải lên: 18/02/2014, 04:20