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Human scFvs that counteract bioactivities of Staphylococcus aureus TSST-1
Rukkawattanakul T. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Human scFvs that counteract bioactivities of Staphylococcus aureus TSST-1
ผู้แต่ง / หัวหน้าโครงการ (EN): Rukkawattanakul T.
บทคัดย่อ (EN): Some Staphylococcus aureus isolates produced toxic shock syndrome toxin-1 (TSST-1) which is a pyrogenic toxin superantigen (PTSAg). The toxin activates a large fraction of peripheral blood T lymphocytes causing the cells to proliferate and release massive amounts of pro-inflammatory cytokines leading to a life-threatening multisystem disorder: toxic shock syndrome (TSS). PTSAg-mediated-T cell stimulation circumvents the conventional antigenic peptide presentation to T cell receptor (TCR) by the antigen-presenting cell (APC). Instead, intact PTSAg binds directly to MHC-II molecule outside peptide binding cleft and simultaneously cross-links TCR-Vβ region. Currently, there is neither specific TSS treatment nor drug that directly inactivates TSST-1. In this study, human single chain antibodies (HuscFvs) that bound to and neutralized bioactivities of the TSST-1 were generated using phage display technology. Three E. coli clones transfected with TSST-1-bound phages fished-out from the human scFv library using recombinant TSST-1 as bait expressed TSST-1-bound-HuscFvs that inhibited the TSST-1-mediated T cell activation and pro-inflammatory cytokine gene expressions and productions.Computerized simulation, verified by mutations of the residues of HuscFv complementarity determining regions (CDRs),predicted to involve in target binding indicated that the HuscFvs formed interface contact with the toxin residues important for immunopathogenesis. The HuscFvs have high potential for future therapeutic application. © 2017 by the authors; licensee MDPI, Basel, Switzerland.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013758179&doi=10.3390%2ftoxins9020050&partnerID=40&md5=772c9abec57378e3f54460500c57bcbd
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): T-Lymphocytes
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Human scFvs that counteract bioactivities of Staphylococcus aureus TSST-1
Rukkawattanakul T.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Status of multi drug resistant Staphylococcus aureus in buffaloes of eastern plain zone of Uttar Pradesh having subclinical mastitis (Buffalo Bulletin,39(4)) การเฝ้าระวัง Vibrio parahaemolyticus, Staphylococcus aureus และ Salmonella spp. ในเนื้อปูต้มแกะ / Surveillance of Vibrio parahaemolyticus, Staphylococcus aureus and Salmonella spp. in Boiled Crab Meat การพัฒนาชุดทดสอบกระดาษอย่างรวดเร็วสำหรับวิเคราะห์ปริมาณ Staphylococcus aureus ในอาหาร In vitro antimicrobial efficacy of some plant extracts against multi-drug resistant Staphylococcus aureus and Streptococcus pyogenes isolated from buffalo mastitic milk (Buffalo Bulletin,40(1)) Detection of virulence associated factors from Staphylococcus aureus isolated from bovine mastitis (Buffalo Bulletin (Thailand),35(4)) Human monoclonal scfvs that neutralize fribrinogenolytic activity of kaouthiagin, a zinc-metalloproteinase in cobra (Naja kaouthia) venom Prevalence and sensitivity of Staphylococcus aureus causing mastitis in buffaloes around Lahore, Pakistan (Buffalo Bulletin,39(1)) The development of the cloaca in the human embryo Characterisation of Classical Enterotoxins, Virulence Activity, and Antibiotic Susceptibility of Staphylococcus aureus Isolated from Thai Fermented Pork Sausages, Clinical Samples, and Healthy Carrier Prevalence of methicillin resistant Staphylococcus aureus in retail buffalo meat in Chennai, India (Buffalo Bulletin (Thailand),37(1))
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