XXist

Kimiko Inoue1, Takashi Kohda, Michihiko Sugimoto

  • 1BioResource Center, RIKEN, 305-0024 Tsukuba, Japan.

Science (New York, N.Y.)
|September 18, 2010
PubMed
概括

科学家通过识别和纠正特定的基因组重编程错误来改进哺乳动物克隆. 在克隆胚胎中删除Xist基因显著提高了克隆效率,并纠正了基因表达问题.

相关概念视频

Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
X-Inactivation01:58

X-Inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
X-inactivation01:58

X-inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.