寶齡攜手韓廠 強攻腎藥市場 2017-02-21 〔記者陳永吉/台北報導〕寶齡富錦(1760)
Pages
Tuesday, February 21, 2017
寶齡Nephoxil 韓國簽約金2017年2月認列/美國FDA申請sNDA擴充適應症
Zika virus 影響neurosphere (from iPS) 小頭症 可能 證據
幹細胞研究揭示寨卡病毒如何引發小頭症 2017年02月20日新華社柏林2月20日電近年來,
Zika virus disrupts molecular fingerprinting of human neurospheres/ Scientific Reports 7, Article number: 40780 (2017) 23 January 2017
Abstract Zika virus (ZIKV) has been associated with microcephaly and other brain abnormalities; however, the molecular consequences of ZIKV to human brain development are still not fully understood. Here we describe alterations in human neurospheres derived from induced pluripotent stem (iPS) cells infected with the strain of Zika virus that is circulating in Brazil. Combining proteomics and mRNA transcriptional profiling, over 500 proteins and genes associated with the Brazilian ZIKV infection were found to be differentially expressed. These genes and proteins provide an interactome map, which indicates that ZIKV controls the expression of RNA processing bodies, miRNA biogenesis and splicing factors required for self-replication. It also suggests that impairments in the molecular pathways underpinning cell cycle and neuronal differentiation are caused by ZIKV. These results point to biological mechanisms implicated in brain malformations, which are important to further the understanding of ZIKV infection and can be exploited as therapeutic potential targets to mitigate it.
Introduction Primary Microcephaly is a rare brain malformation characterized by a reduction of the cephalic perimeter. The etiology of microcephaly varies from genetic abnormalities to external agents such as the STORCH factors–Syphilis, Toxoplasma gondii, Rubella, Cytomegalovirus and Herpes virus infections. An increased number of cases of microcephaly associated with Zika virus (ZIKV) has been reported in Brazil and elsewhere. ZIKV belongs to the Flaviviridae family, which also comprises other important pathogens such as Hepatitis C virus (HCV), West Nile virus (WNV), Japanese encephalitis virus (JEV) and dengue virus (DENV). Since the outbreak of ZIKV-associated microcephaly was observed, the cellular effects of ZIKV infection were rapidly explored. ZIKV alters cell cycle and triggers caspase-mediated cell death in iPS-derived neural progenitors. It reduces the growth of brain organoids and impairs neuronal differentiation in vitro. Recent studies using mouse models also confirmed the association between ZIKV infection and brain malformations. RNA data from microcephalic embryonic mice, human fibroblasts and neural progenitors showed deregulation of many individual genes related to viral response. The molecular pathways associated with ZIKV self-replication and its relation to the failure of central nervous system growth is yet to be discovered. Here we examine the interactome map of proteins and genes altered by ZIKV infection. Combining large scale, state of the art transcriptome and proteome analysis, we identified molecular pathways associated with the Brazilian ZIKV infection in human neurospheres. We show that ZIKV alters the molecular fingerprint of neural stem cells by activating responses to viral replication, DNA damage targets, cell cycle arrest, apoptosis, as well as the downregulation of neurogenic programs. These results shed light on potential molecular mechanisms implicated in brain malformations as a result of congenital ZIKV infection.
長聖國際生技: IGF1R幹細胞培養技術 & 腫瘤疫苗製備
長聖國際生技、邁克邏輯聯網 獲科園審議會核准投資進駐中科投資設立 勁報 2017/02/20【勁報記者羅蔚舟/中科報導】
工研院 南科 設 3D列印醫材工廠 通過/長聖國際生技 3.8億 中科建 幹細胞PIC/S GMP 工廠
工研院計畫在南科設置3D列印醫材智慧製造示範工廠 2017年02月20日 23:57 劉朱松 國內首座3D列印醫材智慧製造示範工廠,將落腳南科!
抗凝血藥(薄血藥)二尖瓣狹窄之心房纖顫 病人 注意
免戒口新薄血藥 非人人適用2017年2月20日 星期一 【明報專訊】常用薄血藥華法林(warfarin),
舊藥幾毫子 新藥近20元 新藥除了面對以上限制,另一個「缺點」是,當遇到出血時,