関連する実験動画
Updated: Jul 16, 2026

10:18
In Vivo Gene Transfer to the Rabbit Common Carotid Artery Endothelium
Published on: May 6, 2018
トロピズム改変型アデノ関連ウイルスベクトルによる血管組織への標的型遺伝子配送 in vivo
Stephen J White1, Stuart A Nicklin, Hildegard Büning
1Bristol Heart Institute, Bristol Royal Infirmary, Bristol, UK.
Circulation
|January 21, 2004
まとめ
研究者らは,標的ペプチドを使用してアデノ関連ウイルス (AAV) ベクトルを設計し,静脈内皮細胞 (EC) に遺伝子治療を特異的に提供しました. この改変は肝臓の伝導を減らし,心血管疾患の治療を改善するために血管の標的化を強化します.
科学分野:
- バイオテクノロジー バイオテクノロジー
- 分子生物学は分子生物学である.
- 心血管研究 循環器科の研究
背景:
- アデノ関連ウイルス (AAV) は,心臓血管疾患の治療のための重要な遺伝子配送ベクターです.
- システミックなAAV投与は肝臓の重要な伝導につながり,非肝臓の標的に対する有効性を制限します.
- 血管内皮細胞 (ECs) は,そのアクセシビリティと異質性のために,サイト固有の遺伝子配送の理想的なターゲットです.
研究 の 目的:
- 静脈内皮細胞を選択的に標的にするためにAAVベクトルを設計する.
- 系統的AAV投与に関連した非標的肝臓伝導を減らすために.
- 心血管疾患に対する改善された遺伝子療法戦略を開発する.
主な方法:
- ファージディスプレイは,ヒトの静脈EC標的ペプチドを分離するために使用されました.
- これらのペプチドは,AAVカプシドに遺伝的に組み込まれました.
- 改変されたAAVは,マウスの体外および体内でのトランスデュークション特異性をテストした.
主要な成果:
- ペプチドで改変されたAAVは,静脈ECをインビトロで選択的にトランスデュースし,動脈ECのトランスデュークションを減少させた.
- 肝細胞伝導は,ネイティブAAVと比較してペプチド改変AAVにおいて有意に低かった.
- In vivo試験では,肝臓の蓄積が低下し,遺伝子組み換えAAVの血液クリアランスが遅れていることが示され,静脈内での選択的トランスゲン発現が示されました.
結論:
- ファグディスプレイ派生ペプチドを用いたAAVトロピズムの遺伝子工学は実現可能である.
- このアプローチにより,血管系に対する選択性が向上したベクターが生成されます.
- 開発されたペプチド改変型AAVは,心臓血管疾患における標的遺伝子治療のための有望な戦略を提供します.
関連する概念動画
Retroviruses
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
Intracellular Movement of Viruses and Bacteria
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a virus that...
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...
Transduction
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...
Transmission of Pathogens
Pathogens spread from their reservoirs to susceptible hosts through three main routes: contact transmission, vehicle transmission, and vector transmission. Each route involves distinct mechanisms of transfer.Contact TransmissionThis category includes direct contact, indirect contact, and droplet transmission:Direct contact involves immediate physical interaction between individuals—such as a handshake—which can spread pathogens like Streptococcus pyogenes, the bacterium responsible for...
Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...

