DPC4は,ヒト染色体18q21.1にある腫瘍抑制遺伝子候補である
S A Hahn1, M Schutte, A T Hoque
1Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
Science (New York, N.Y.)
|January 19, 1996
まとめ
研究者らは,DPC4を潜在的な腫瘍抑制遺伝子として特定した. この遺伝子の不活性化は,臓がんの発症に寄与し,がん遺伝学に関する新しい洞察を提供している可能性があります.
科学分野:
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- 臓がんは,しばしば染色体18qでのアレル損失を示し,この領域に腫瘍抑制遺伝子の存在を示唆します.
- 腫瘍抑制に責任を負う特定の遺伝子を特定することは,がんの発症を理解するために不可欠です.
研究 の 目的:
- 染色体18qの候補腫瘍抑制遺伝子を特定する.
- 臓がんにおけるDPC4遺伝子の役割を調査する.
主な方法:
- 18q.でホモジゴスな欠損を検出するために,臓がんのパネルの分析.
- 変異を特定するために候補遺伝子の配列決定.
- DPC4配列を,既知のシグナル伝達経路遺伝子と比較した結果.
主要な成果:
- 18q21.1のホモジゴス欠損は84の腫瘍のうち25で発見されました.
- 18q21.1に位置するDPC4遺伝子は,主要な候補として特定されました.
- DPC4に潜在的に不活性化する変異は,同同位体の欠損が欠けている27の腫瘍のうち6で発見されました.
結論:
- DPC4は,がん抑制遺伝子候補として特定されています.
- DPC4の不活性化は,臓がんにおいて重要な役割を果たす可能性があります.
- 他のヒトがんにおけるDPC4の役割を調べるためにさらなる研究が必要である.
さらに関連する動画
05:58Digital Polymerase Chain Reaction Assay for the Genetic Variation in a Sporadic Familial Adenomatous Polyposis Patient Using the Chip-in-a-tube Format
Published on: August 20, 2018
06:24Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line
Published on: April 11, 2025
関連する概念動画
02:23Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
02:07Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
01:12Loss of Tumor Suppressor Gene Functions
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:12Loss of Tumor Suppressor Gene Functions
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...