会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 72. 发明申请
    • IMPROVED METHOD FOR HOMOLOGOUS RECOMBINATION IN EUKARYOTIC CELLS
    • 改造方法用于真核细胞中的同源重组
    • WO2007115886A1
    • 2007-10-18
    • PCT/EP2007/052392
    • 2007-03-14
    • DSM IP ASSETS B.V.BERG, VAN DEN, Marco AlexanderKERKMAN, RichardTOUW-RIEL, Hesselien
    • BERG, VAN DEN, Marco AlexanderKERKMAN, RichardTOUW-RIEL, Hesselien
    • C12N15/80C12N15/90
    • C12N15/815C12N15/905C12N2800/30C12N2800/70
    • The present invention discloses a method to construct eukaryotic cells having a target sequence in a chromosomal DNA sequence replaced by a desired replacement sequence, comprising: modifying a parent eukaryotic cell with a preference for NHR to provide a eukaryotic cell having an increased HR/NHR ratio as compared to the parent cell, providing a DNA molecule comprising a first DNA fragment comprising a desired replacement sequence flanked at its 5' and 3' sides by DNA sequences substantially homologous to sequences of the chromosomal DNA flanking the target sequence and a second DNA fragment comprising an expression cassette comprising a gene encoding a selection marker and regulatory sequences functional in the eukaryotic cell operably linked thereto; transforming the modified eukaryotic cells with the DNA molecule; growing the cells to obtain transformed progeny cells having the DNA molecule inserted into the chromosome, deselecting the progeny cells in which the DNA molecule is inserted in the chromosome via a non-homologous recombination event by expression of the selection marker; and obtaining cells wherein the target sequence in the chromosomal DNA sequence is replaced by the desired replacement sequence.
    • 本发明公开了一种构建真核细胞的方法,所述真核细胞在染色体DNA序列中以期望的置换序列替代具有靶序列,其包括:以优选NHR修饰亲本真核细胞以提供具有增加的HR / NHR比的真核细胞 与亲本细胞相比,提供DNA分子,其包含第一DNA片段,所述第一DNA片段包含在其5'和3'侧侧翼的所需替换序列,所述DNA序列与靶序列侧翼的染色体DNA的序列基本同源的DNA序列和第二DNA片段 包括表达盒,其包含编码选择标记的基因和在可操作地连接到其上的在真核细胞中功能的调节序列; 用DNA分子转化修饰的真核细胞; 生长细胞以获得具有插入到染色体中的DNA分子的转化后代细胞,通过选择标记的表达,通过非同源重组事件去除选择DNA分子插入到染色体中的子代细胞; 并获得细胞,其中染色体DNA序列中的靶序列被所需的置换序列替代。
    • 73. 发明申请
    • 染色体改変方法
    • 修饰色素的方法
    • WO2007063919A1
    • 2007-06-07
    • PCT/JP2006/323852
    • 2006-11-29
    • 旭硝子株式会社平島 匡太郎東田 英毅浜 祐子
    • 平島 匡太郎東田 英毅浜 祐子
    • C12N15/00C12N15/09C12Q1/68
    • C12N15/815C12N15/1079C12N15/1082C12N15/905
    • It is intended to provide a widely usable method of modifying chromosome without resorting to any specific enzyme or sequence and a method of identifying a gene that is essentially required in cell proliferation. First, a selection marker gene (B) allowing negative selection is integrated into the upstream or downstream of a target DNA region (X) and then the selection marker gene (B) and the target DNA region (X) are sandwiched between duplicated sequences. It is preferable that a DNA fragment having a sequence (A') (which is a sequence being substantially the same as a specific sequence (A) located in the downstream of the target DNA region) and the selection marker gene (B) as described above is constructed and then this DNA fragment is integrated into the upstream of the target DNA region (X). Next, homologous recombination and negative selection are conducted so that the target DNA region (X) can be easily removed from the chromosome. In the case where the chromosome contains no target DNA region (X) after the above-described treatment, it can be understood that the target DNA region (X) contains no gene that is essentially required in cell proliferation under the culture condition.
    • 本发明旨在提供一种广泛可用的修饰染色体的方法,而不涉及任何特定的酶或序列,以及鉴定细胞增殖中基本上需要的基因的方法。 首先,将允许阴性选择的选择标记基因(B)整合到靶DNA区域(X)的上游或下游,然后将选择标记基因(B)和靶DNA区域(X)夹在复制序列之间。 优选具有序列(A')(其位于靶DNA区域下游的与特定序列(A)基本相同的序列)的DNA片段和所述选择标记基因(B) 构建上述,然后将该DNA片段整合到靶DNA区域(X)的上游。 接下来,进行同源重组和阴性选择,使得靶DNA区域(X)可以容易地从染色体上去除。 在染色体在上述处理后不含目标DNA区域(X)的情况下,可以理解,目标DNA区域(X)不含有在培养条件下细胞增殖基本上必需的基因。
    • 77. 发明申请
    • METHODS FOR PRODUCING A POLYPEPTIDE USING A CRIPPLED TRANSLATIONAL INITIATOR SEQUENCE
    • 使用切片翻译序列产生多肽的方法
    • WO01051646A2
    • 2001-07-19
    • PCT/US2001/001102
    • 2001-01-12
    • C12N15/80C12N15/90C12N15/67C12N15/52C12N15/65
    • C12N15/905C12N15/80
    • The present invention relates to methods for producing a polypeptide, comprising: (a) cultivating a fungal host cell in a medium conducive for the production of the polypeptide; and (b) isolating the polypeptide from the cultivation medium; wherein the fungal host cell comprises a first nucleic acid sequence encoding the polypeptide in tandem with a second nucleic acid sequence comprising a crippled translational initiator sequence operably linked to a gene encoding a selectable marker, wherein the copy number of the first nucleic acid sequence has been increased by culturing the cell under conditions that select for multiple copies of the selectable marker. The present invention also relates to such fungal host cells and methods for obtaining such fungal host cells. The present invention further relates to nucleic acid constructs and vectors comprising a crippled translational initiator sequence operably linked to a gene encoding a selectable marker.
    • 本发明涉及产生多肽的方法,包括:(a)在有助于产生多肽的培养基中培养真菌宿主细胞; 和(b)从培养基中分离多肽; 其中所述真菌宿主细胞包含编码所述多肽的第一核酸序列与第二核酸序列串联,所述第二核酸序列包含与编码可选择标记的基因可操作地连接的残基翻译起始序列,其中所述第一核酸序列的拷贝数已经被 通过在选择可选择标记的多个拷贝的条件下培养细胞而增加。 本发明还涉及这种真菌宿主细胞和获得这种真菌宿主细胞的方法。 本发明还涉及核酸构建体和载体,其包含与编码可选择标记的基因可操作地连接的残基翻译起始序列。
    • 78. 发明申请
    • GENERATION OF CONDITIONAL YEAST MUTANTS, METHODS AND REAGENTS RELATED THERETO
    • 条件YEAST MUTANTS,相关方法和试剂的产生
    • WO00053781A1
    • 2000-09-14
    • PCT/US2000/006514
    • 2000-03-13
    • C12N1/19C12N15/31C12N15/81C12N15/90C12Q1/00
    • C12N15/815C12N15/905
    • The invention features a method for systematically generating mutant strains of obligate haploid and obligate diploid yeast, having condition-sensitive lethal mutations of a gene which is otherwise essential to cell viability under all conditions of cell growth. Conditional mutants make possible the analysis of physiological changes caused by inactivation of a gene or a gene product and can be used to address the function of any gene. In an exemplary embodiment, the method of the present invention can be generally characterized as follows: (i) providing a Candida strain whichis heterozygous for a loss-of-function mutation of an allele of an essential gene; and (ii) introducing a conditionally sensitive homolog of the gene, e.g., with conditional-sensitive protein or conditional-sensitive transcriptional regulatory sequence, at the functional allele by integrative transformation.
    • 本发明的特征在于一种用于系统地产生专性单倍体和专性二倍体酵母的突变株的方法,其具有在细胞生长的所有条件下对细胞活力至关重要的基因的条件敏感致死突变。 有条件的突变体使得能够分析由基因或基因产物失活引起的生理变化,并可用于解决任何基因的功能。 在一个示例性实施方案中,本发明的方法的一般特征如下:(i)提供对必需基因的等位基因的功能丧失突变杂合的假丝酵母属菌株; 和(ii)通过整合转化在功能等位基因上引入基因的条件敏感同源物,例如条件敏感蛋白或条件敏感性转录调控序列。