Abstract:
本发明属于生物基因工程技术领域,具体为一种水稻组蛋白甲基转移酶及其编码基因与应用。该甲基转移酶是下述氨基酸残基序列之一:(1)序列表中的SEQ ID No:1;(2)将序列表中的SEQ ID No:1的氨基酸残基序列经过一至五十个氨基酸残基的取代和/或缺失和/或添加且对植物的生长发育具有调控作用的蛋白质。本发明还包括含有本发明基因的重组表达载体、转基因细胞系和工程菌以及扩增该基因中任一片段的引物对。该水稻组蛋白赖氨酸甲基转移酶的编码基因的反义转基因株系生长矮小,开花时间推迟。本发明为植物品种改良提供了一个优质基因,具有较高的实际应用价值,应用前景广阔。
Abstract:
本发明属于生物基因工程技术领域,具体为一种水稻组蛋白赖氨酸甲基转移酶及其编码基因与应用。本发明的水稻组蛋白赖氨酸甲基转移酶是下述氨基酸残基序列之一:序列表中的SEQ ID No:1;将序列表中的SEQ ID No:1的氨基酸残基序列经过一至五十个氨基酸残基的取代和/或缺失和/或添加且对植物的生长发育具有调控作用的蛋白质。本发明还包括含有本发明基因的重组表达载体、转基因细胞系和工程菌以及扩增该基因中任一片段的引物对。该水稻组蛋白赖氨酸甲基转移酶的编码基因的反义转基因株系呈现出晚花表型。本发明为植物品种改良提供了一个优质基因,具有较高的实际应用价值,应用前景广阔。
Abstract:
The present invention provides methods and compostions to improve the efficiency of somatic cell nuclear transfer (SCNT) and the consequent production of nuclear transfer ESC (ntESC) and transgenic cells and/or non-human animals. More specifically, the present invention relates to the discovery that trimethylation of Histone H3-Lysine 9 (H3K9me3) in reprogramming resistant regions (RRRs) in the nuclear genetic material of donor somatic cells prevents efficient somatic cell nuclear reprogramming or SCNT. The present invention provide methods and compositions to decrease H3K9me3 in methods to improve efficacy of SCNT by exogenous or overexpression of the demethylase Kdm4 family and/or inhibiting methylation of H3K9me3 by inhibiting the histone methyltransferases Suv39h1 and/or Suv39h2.
Abstract:
The invention relates to the use of the amplification of SETDB1 gene in lung cancer patients as predictive marker for the determination of the response to a SETDB1 antagonist, particularly to a SETDB1-specific RNAi or to mithramycin. The invention relates to methods of treatment, methods for predicting the clinical response to a SETDB1 antagonist and methods for selecting a lung cancer patient for being treated with a SETDB1 antagonist based on the detection of SETDB1 gene amplification.