نتایج جستجو برای: vhh
تعداد نتایج: 516 فیلتر نتایج به سال:
Vγ9Vδ2-T cells constitute the predominant subset of γδ-T cells in human peripheral blood and have been shown to play an important role in antimicrobial and antitumor immune responses. Several efforts have been initiated to exploit these cells for cancer immunotherapy, e.g. by using phosphoantigens, adoptive cell transfer, and by a bispecific monoclonal antibody based approach. Here, we report t...
با توجه به اهمیت مهار vegf و ویژگی های بی نظیر vhh که آنها را در زمره نسل جدید داروهای از نوع آنتی بادی قرار داده ، هدف از این مطالعه تولید vhh علیه دمین متصل شونده به رسپتور vegf است تا بدین ترتیب از اتصال vegf به رسپتورش ممانعت بعمل آید. پس از تهیه گنجینه ژنی قطعات vhh از شتر ایمن، کتابخانه نمایش فاژی vhh ساخته شد. برای جداسازی فاژهای نمایشگرvhh با تمایل بالا به دمین متصل شونده به رسپتور vegf...
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...
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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