نتایج جستجو برای: vhh nanobody
تعداد نتایج: 1067 فیلتر نتایج به سال:
BACKGROUND Bacterial surface display is an attractive technique for the production of cell-anchored, functional proteins and engineering of whole-cell catalysts. Although various outer membrane proteins have been used for surface display, an easy and versatile high-throughput-compatible assay for evaluating and developing surface display systems is missing. RESULTS Using a single domain antib...
Camelids produce functional antibodies devoid of light chains and CH1 domains .The antigen-binding fragment of such heavy-chain antibodies is therefore comprised in one single domain, the VHH. We report here on the structures of three dromadery VHH domains in complex with porcine pancreatic αamylase. Two VHHs bind outside the catalytic site and do not inhibit or inhibit only partially the amyla...
BACKGROUND The 16 kDa heat shock protein (HSP) is an immuno-dominant antigen, used in diagnosis of infectious Mycobacterium tuberculosis (M.tb.) causing tuberculosis (TB). Its use in serum-based diagnostics is limited, but for the direct identification of M.tb. bacteria in sputum or cultures it may represent a useful tool. Recently, a broad set of twelve 16 kDa specific heavy chain llama antibo...
Abstract Background & Significance VHHs are small and stable fragments that have great potential as therapeutics due to their size, stability, versatility, for oral administration. The traditional source of is camelids, but humanization usually needed therapeutic development. A human VHH library highly desirable the generation VHHs, natural VH domains unstable standalone units. We developed...
The redirection of T cell activity using bispecific antibodies is one of the most promising cancer immunotherapy approaches currently in development, but it is limited by cytokine storm-related toxicities, as well as the pharmacokinetics and tumor-penetrating capabilities of current bispecific antibody formats. Here, we have engineered the ATTACK (Asymmetric Tandem Trimerbody for T cell Activat...
To date, no immunization of humans or animals has elicited broadly neutralizing sera able to prevent HIV-1 transmission; however, elicitation of broad and potent heavy chain only antibodies (HCAb) has previously been reported in llamas. In this study, the anti-HIV immune responses in immunized llamas were studied via deep sequencing analysis using broadly neutralizing monoclonal HCAbs as a guid...
Clefts on protein surfaces are avoided by antigen-combining sites of conventional antibodies, in contrast to heavy-chain antibodies (HCAbs) of camelids that seem to be attracted by enzymes' substrate pockets. The explanation for this pronounced preference of HCAbs was investigated. Eight single domain antigen-binding fragments of HCAbs (VHH) with nanomolar affinities for lysozyme were isolated ...
An antibody-based analytical method for the detection of a chemical flame retardant using antibody fragments isolated from an alpaca has been developed. One specific chemical flame retardant congener, 2,2',4,4'-tetrabrominated diphenyl ether (BDE-47), is often the major poly-BDE (PBDE) congener present in human and environmental samples and that which is the most frequently detected. An alpaca ...
در این پژوهش دو کتابخانه آنتی بادی دو ظرفیتی و دو ویژگی vhh-vhh و vhh-vh بر ضد آنتی ژن های توموری رده سلولی skbr3 ساخته شد. این لاین سلولی مارکرهای توموری مربوط به سرطان سینه را بیان می کند، که از جمله آن ها her2 است که بیان بالایی در این لاین سلولی دارد. مارکرهای توموری مولکول هایی هستند که قادرند حضور سرطان را محرز کنند و اطلاعاتی در مورد رفتار بعدی سرطان مثل قابلیت متاستاز و یا پاسخ به درمان...
Unlike conventional antibodies, heavy chain only antibodies derived from camel contain a single variable domain (VHH) and two constant domains (CH2 and CH3). Cloned and isolated VHHs possess unique properties that enable them to excel conventional therapeutic antibodies and their smaller antigen-binding fragments in cancer targeting and therapy. VHHs express low immunogenicity, are highly robus...
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