フラビウイルス は 宿主 の 微生物 群 を 乗っ て 感染 を 促進 する
Lejla Gul1, Tamas Korcsmaros2, Neil Hall3
1Earlham Institute, Norwich, UK; Imperial College London, Department of Metabolism, Reproduction and Development, London, UK.
Cell
|July 8, 2022
まとめ
デング熱やジカのような フラビウイルスは 皮膚の微生物群を操作して 蚊を惹きつけ 感染を助長します ビタミンAはこれらの効果を相殺し,ウイルスの伝播を減らすことができます.
科学分野:
- ウイルス学
- 微生物群の研究
- 感染症
背景:
- デング熱やジカを含むフラビウイルスは,世界的な健康に重大な脅威をもたらしています.
- 蚊はこれらのウイルスの 主な伝達媒介となります
- 宿主と病原体の相互作用を理解することは,病気の制御に不可欠です.
研究 の 目的:
- フラビウイルスが宿主皮膚の微生物群をどのように変化させるかを調査する.
- 媒介者の行動と ウイルスの伝播に及ぼす影響を 決定する.
- ウイルスの拡散を緩和する潜在的な治療戦略を特定する.
主な方法:
- 感染した宿主と対照宿主における皮膚微生物組成の分析.
- 感染した宿主に対する蚊の魅力を評価する行動分析です
- 特定の微生物の代謝産物と宿主因子の役割を調査する.
主要な成果:
- フラビウイルス感染は 皮膚の微生物を大きく変形させます
- 変化した微生物群の組成は 感染した個体に対する蚊の魅力を高めます
- ビタミンAのサプリメントは 微生物の変化を逆転させ 媒介者の引き寄せを減らすことが分かりました
結論:
- フラビウイルスは 皮膚の微生物群を積極的に操作して 感染を容易にします
- 皮膚の微生物群をターゲットに ビタミンAを投与することで フラビウイルスの拡散を制御する 新しい戦略が生まれます
- この研究は,宿主の免疫,微生物群,病原菌による病気の動態の複雑な関係を強調しています.
関連する概念動画
01:10Intracellular Movement of Viruses and Bacteria
2.9K
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...
2.9K
01:20Infection
8.6K
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
8.6K
00:57Viral Recombination
23.7K
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
23.7K
01:30Lytic Cycle of Bacteriophages
71.8K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
71.8K
01:29Microorganisms in Medicine and Therapeutics
305
Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
305
01:20Viral Replication: Lytic Cycle
194
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
194