Project description:Due to the impact worldwide of COVID-19, the 12th European ISNS meeting planned to be live in Luxembourg in November 2020 became Luxembourg Going Virtual in November 2021. The conference theme derived from the geographic location of Luxembourg was retained: Newborn screening-working together in the heart of Europe. Abstracts of the newborn screening experience and knowledge shared in both oral presentations and posters at the symposium are gathered here to assist in selecting presenters to attend virtually and posters to view online. Some abstract highlights include findings from pilot studies of new screening disorders, the value of screening older previously unscreened children, and benefits of second tier testing.
Project description:INTRODUCTION: Ginsenoside Rg3 is a natural active ingredient that is extracted from Korean red ginseng root. It elevates therapeutic effect of radiotherapy and chemotherapy, but the study found that the application of Rg3 is heavily limited by its low bioavailability and poor absorption via oral administration. METHOD: Rg3-loaded PEG-PLGA-NPs (Rg3-NPs) were prepared by the modified spontaneous emulsification solvent diffusion (SESD) method, and the physicochemical characteristics of Rg3-NPs were investigated in our study. We treated primary glioblastoma with 50 µM Rg3-NPs for 48h. We then used gene expression arrays (Illumina) for genome-wide expression analysis and validated the results for genes of interest by means of Real-Time PCR. Functional annotations were then performed using the DAVID and KEGG online tools. RESULTS: MTT shows that the growth of cells can be significantly inhibited by Rg3-NPs in a dose-dependence manner. FCM test shows Rg3-NPs can be released from the conjugate nanoparticle and react with the genes in the cell nuclei causing changes in the gene molecules. We also found that cancer cells treated with Rg3-NPs undergo cell-cycle arrest at different checkpoints. This arrest was associated with a decrease in the mRNA levels of core regulatory genes as determined by microarray-analysis and verified by Real-Time PCR. Furthermore, Rg3-NPs induced the expression of apoptotic and anti-migratory proteins p53 in cell lines. CONCLUSIONS: The results of the present study, together with the results of earlier studies show that Rg3-NPs targets genes involved in the progression of the M-phase of the cell cycle. It is associated with several important pathways, which include apoptosis (p53). Rg3-NPs may be a potent cell-cycle regulation drug targeting the M-phase in glioblastoma cell lines.