カンディダ・アルビカンスの粘着性および哺乳類のトランスグルタミンゼ基板特性 Hwp1
J F Staab1, S D Bradway, P L Fidel
1Department of Medical Microbiology and Immunology, College of Medicine and Public Health, Ohio State University, 333 West Tenth Avenue, Columbus, OH 43210, USA.
まとめ
Candida albicansは,宿主細胞に結合し,感染を引き起こすために,ヒファ特異のタンパク質であるHwp1を使用しています. Hwp1を除去すると,酵母が組織に侵入し,カンジダ症を引き起こす能力が低下します.
科学分野:
- 医学菌学 医学菌学について
- 感染症 感染症は感染症です.
- 分子生物学は分子生物学である.
背景:
- カンジダ症の病原産には,繊維状のカンジダ・アルビカンスの組織侵入が含まれます.
- 形態学特異的な遺伝子製品は,真菌の侵入性を高める可能性があります.
研究 の 目的:
- カンディダ・アルビカンスの病原性におけるハイファ特異的表面タンパク質Hwp1の役割を調査する.
- 宿主トランスグルタミナゼを含む微生物の粘着のメカニズムを理解する.
主な方法:
- Candida albicansの遺伝子操作により,Hwp1欠乏菌株が作られる.
- ヒトの口腔上皮細胞へのキノコの結合を評価するためのアッセイ.
- 系統性カンジダチアシスを評価するためにマウスモデルでのin vivo研究.
主要な成果:
- Hwp1は哺乳類のトランスグルタミナゼの基質として作用する.
- Hwp1を欠いたCandida albicans菌株は,上皮細胞への安定した結合が損なわれたことを示した.
- Hwp1欠乏症は,マウスにおける全身性カンジダ症を引き起こす能力の低下につながった.
結論:
- Hwp1は,カンジダ・アルビカンスの宿主細胞への粘着に不可欠です.
- この相互作用は,宿主酵素を含む微生物の粘着のパラダイムを強調しています.
- Hwp1は,抗真菌療法における潜在的な標的である.
関連する概念動画
Immunoglobulin-like Cell Adhesion Molecules
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Fimbriae, Pili, and Axial Filaments
Fimbriae and pili are specialized bacterial surface structures that play pivotal roles in adhesion, genetic exchange, and motility. Composed primarily of pilin protein, these hairlike appendages are crucial for bacterial survival and pathogenicity in various environments.Fimbriae: Adhesion and PathogenicityFimbriae are fine, filamentous structures measuring 2–10 nanometers in diameter and are densely distributed on the bacterial cell surface. They facilitate bacterial adhesion to abiotic...
Surface Appendages of Archaea
Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
Candidiasis
Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...


