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Updated: Jun 23, 2026

11:06
Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells
Published on: February 24, 2014
人間の腫瘍から派生した細胞系には,共通の遺伝子と異なる変異遺伝子が含まれています
M Perucho1, M Goldfarb, K Shimizu
1Cold Spring Harbor Laboratory, New York 11724.
Cell
|December 1, 1981
まとめ
人間の腫瘍細胞DNAは,マウス細胞を変容させ,少なくとも3つの異なる癌を誘発する遺伝子を明らかにすることができます. これらの発見は,がんを引き起こす経路の重複の独立した起源を示唆し,腫瘍創生の研究を進めています.
科学分野:
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
背景:
- 培養されたヒト腫瘍細胞系は,がんの発達を研究するための重要なモデルです.
- 細胞の変異に責任を負う遺伝子を特定することは,腫瘍創生を理解するための鍵です.
研究 の 目的:
- NIH/3T3マウス細胞の変異を誘発できるDNAをヒト腫瘍細胞系をスクリーニングするために.
- これらの腫瘍系に存在するヒト特異変異遺伝子を特定し,特徴づけること.
主な方法:
- NIH/3T3細胞における変換誘導のためのヒト腫瘍細胞系DNAのスクリーニング.
- DNA断片を分析するために制限内核酵素消化.
- 人間の遺伝子起源を確認するために,改変したマウス細胞におけるヒトDNA配列の検出.
主要な成果:
- 5つのヒト腫瘍細胞系が,NIH/3T3細胞を変換する能力を実証した.
- この5つの細胞系で,少なくとも3つの異なるヒトの変異遺伝子が特定されました.
- 3つの細胞系 (肺2種,結腸癌1種) のサブセットは,同一または密接に関連した変異遺伝子を転送した.
結論:
- 人間の腫瘍DNAには,異なる種における細胞変異を誘発できる遺伝子が含まれています.
- 複数の異なった変異遺伝子の存在は,がんにおける多様な遺伝的出来事を示唆している.
- 腫瘍発生における重複する経路は,独立して発生し,がんの異質性についての洞察を提供することができる.
関連する概念動画
Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
Non-nuclear Inheritance
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm—such as chloroplasts and mitochondria—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Genetic Material
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.
Genetic Variation
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...
Genes exist in different versions called alleles, which...

