エプスタイン・バーウイルスDNAの細胞内形態は,ヒト腫瘍細胞のDNAを in vivo で検出する
関連する実験動画
Updated: Jul 15, 2026

12:08
Ex Vivo Infection of Live Tissue with Oncolytic Viruses
Published on: June 25, 2011
Nature
|March 25, 1976
まとめ
エプスタイン・バーウイルスのDNAは,バーキットリンパ腫と鼻がん腫瘍で,共振的に閉じた円形DNAとして発見されました. 統合されたウイルスのDNA配列も検出され,これらのがんではウイルスの二重状態を示唆しました.
科学分野:
- 腫瘍学 腫瘍学
- ウイルス学 ウイルス学 ウイルス学
- 分子生物学は分子生物学である.
背景:
- エプスタイン・バーウイルス (EBV) は,様々な癌に関与しているヒトヘルペスウイルスです.
- ウイルスのDNAのエピソーマ状態と統合状態を理解することは,がんの病原性にとって極めて重要です.
研究 の 目的:
- ヒト腫瘍サンプルにおけるエプスタイン・バーウイルスDNAの物理的状態を調査する.
- ブルキットリンパ腫と鼻がんでEBVDNAがエピソームまたは統合された配列として存在するかどうかを判断する.
主な方法:
- バーキットリンパ腫患者の腫瘍生検の分析.
- ヒトの鼻がん細胞の検査 異種移植されたヒト鼻がん細胞の検査 異種移植されたヒト鼻がん細胞の検査
- 分子技術を用いたウイルスDNAの検出.
主要な成果:
- エプスタイン・バーウイルスのDNAは,ブルキットリンパ腫と鼻がんの腫瘍モデルの両方で,共振的に閉じた円形DNA (エピソーム) として識別されました.
- これらの腫瘍サンプルで,統合されたウイルスのDNA配列の存在の証拠も観察されました.
結論:
- エプスタイン・バーウイルスのDNAは,ヒトの腫瘍細胞内のクロモソーム外 (エピソーム外) と統合された形態の両方で存在することができます.
- ウイルスのDNAのこの二重状態は,EBVに関連した悪性腫瘍の発達と進行に役割を果たす可能性があります.
関連する概念動画
DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Mechanisms of Retrovirus-induced Cancers
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
DNA Damage Can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Mechanisms of Retrovirus-induced Cancers
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...

