miR167d-ARFs Module Regulates Flower Opening and Stigma Size in Rice.

Flower opening and stigma exertion are two critical traits for cross-pollination during seed production of hybrid rice (Oryza sativa L.). In this study, we demonstrate that the miR167d-ARFs module regulates stigma size and flower opening that is associated with the elongation of stamen filaments and the cell arrangement of lodicules.

[Significance of CD4+ CD25+ CD127(low) regulatory T cells and notch1 pathway in the pathogenesis of aplastic anemia].

Objective: To quantify the CD4+ CD25+ CD127(low) regulatory T cell (Treg), the expression levels of forkhead/winged helix transcription factor FOXP3 and Notch1 mRNA in aplastic anemia (AA) patients before and after treatment, and explore the significance of Treg in pathogenesis of AA.

Method: CD4+ CD25+ and CD4+ CD25+ CD127(low) T cells in peripheral blood were examined with FACS in 29 AA patients at active phase, 14 at recovery phase, 11 at unrecovery phase, and 15 normal controls. The levels of FOXP3 mRNA and Notch1 mRNA expression were detected with RT-PCR, and the correlations between Treg, FOXP3 mRNA and Notchl mRNA were analyzed.

Co-adsorption of CO onto a Ag-modified Pt(111)--restructuring of a Ag UPD layer monitored by EC-STM.

The effect of co-adsorption of CO on an underpotentially deposited (UPD) silver monolayer on a Pt(111) single crystal electrode in 0.05 M sulfuric acid is investigated for the first time by means of electrochemical scanning tunneling microscopy (EC-STM). Pure electrochemical experiments suggest that the co-adsorption of CO onto Pt single crystal electrodes previously modified by a monolayer of Ag, forces Ag atoms of the first UPD monolayer into a second adlayer.

[The effect of selectively inhibiting the nuclear factor kappaB activation on survivin expression in leukemic cells].

Objective: To investigate the highly specific proteasomal inhibitor MG132-induced apoptosis and its effect on nuclear factor (NF)-kappaB activation and survivin expression in leukemic K562 cell line.

Methods: leukemic cells of the line K562 were cultured and divided into 2 groups: treatment group, undergoing co-incubation with MG132 of the concentrations of 2, 4, 6, and 8 micromol/L respectively for 24 hours, and control group without treatment of MG132. Apoptosis was detected by examination of cell morphology and flow cytometry.