まとめ
Rousサルコマウイルスで注射された新生レサス猿は,線維サルコマを発症し,霊長類の腫瘍発生を示した. 成人猿は腫瘍の発症を示せず,ウイルス腫瘍生成に対する年齢関連の感受性を強調した.
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
- 靈長類の研究は,霊長類の研究である.
背景:
- ルース・サルコマウイルス (RSV) は,知られている腫瘍性レトロウイルスです.
- 非人間霊長類の腫瘍発生は,ウイルス腫瘍発生を理解する上で重要な分野である.
研究 の 目的:
- rhesus 類人猿における Rous サルコマウイルスの変異体の腫瘍発生の可能性を調査する.
- ウイルスの注射で霊長類にサーコマが誘発できるかどうかを判断する.
主な方法:
- 大人および新生児のレサス猿にロース・サルコマウイルスのサスペンションを注射する.
- 腫瘍のモニタリングと診断,ヒト病理学的検査を含む.
- ウイルスの存在を確認するために,ウイルスの隔離と鶏の翼網検査に再接種.
主要な成果:
- 新生猿の8匹のうち7匹が2~6週間以内に腫瘍を発症した.
- これらの腫瘍のうち3つは,組織病理学的にフィブロサルコマとして確認されました.
- 4匹の成人のサルでは,11週間後に腫瘍は見られませんでした.
- ウイルスは,チキンウィング-ウェブアッセイによる2つの腫瘍サンプルで成功裏に実証されました.
結論:
- ロース・サルコマウイルスは,新生児のレサスサルコマに線維サルコマを誘発することができる.
- 新生児の霊長類は,成人とは異なり,ウイルスの腫瘍発生に対して感受性を示す.
- この研究は,霊長類におけるウイルスが誘発したサルコマの最初の文書化された事例を表しています.
さらに関連する動画
関連する概念動画
02:18Cancer
Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
02:21Cancers 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...
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...
01:03Rous 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...
02:21Cancers 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...
01:03Rous 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...