نتایج جستجو برای: vhh nanobody
تعداد نتایج: 1067 فیلتر نتایج به سال:
BACKGROUND Newcastle disease (ND), which is caused by the Newcastle disease virus (NDV), is one of the most important avian diseases in poultry. Since its discovery in 1926, ND has caused great economic losses to the world poultry industry and remains a threat to chickens and wild birds. Although a stringent vaccination policy is widely adopted to control ND, ND outbreaks still occur, and virul...
Camelid heavy-chain antibody variable domains (VHHs) are emerging as potential antimicrobial reagents. We have engineered a previously isolated VHH (FlagV1M), which binds Campylobacter jejuni flagella, for greater thermal and proteolytic stability. Mutants of FlagV1M were obtained from an error-prone polymerase chain reaction library that was panned in the presence of gastrointestinal (GI) prot...
Oral feed-based passive immunization can be a promising strategy to prolong maternal lactogenic immunity against postweaning infections. Enterotoxigenic Escherichia coli (ETEC)-caused postweaning diarrhea in piglets is one such infection that may be prevented by oral passive immunization and might avert recurrent economic losses to the pig farming industry. As a proof of principle, we designed ...
Background and purpose: Monoclonal antibodies market has grown since approval of Muromonab-CD3 (trade name Orthoclone OKT3) in 1986 as immuno- suppressor. Nevertheless, the undesirable effects of these large specific biomolecules calls for further attempts for more effective alternatives. Variable domain of heavy chain (VHH) are the smallest antibody fragments called Nanobody (Nb), derived...
Antibodies normally do not cross the blood-brain barrier (BBB) and cannot bind an intracellular cerebral antigen. We demonstrate here for the first time that a new class of antibodies can cross the BBB without treatment. Camelids produce native homodimeric heavy-chain antibodies, the paratope being composed of a single-variable domain called VHH. Here, we used recombinant VHH directed against h...
Here, we describe a new strategy that allows the rapid and efficient engineering of mono and multispecific trivalent antibodies. By fusing single-domain antibodies from camelid heavy-chain-only immunoglobulins (VHHs) to the N-terminus of a human collagen XVIII trimerization domain (TIE(XVIII)) we produced monospecific trimerbodies that were efficiently secreted as soluble functional proteins by...
Tetrabromobisphenol A (TBBPA) is a ubiquitous flame retardant. A high-throughput immunoassay would allow for monitoring of human and environmental exposures as a part of risk assessment. Naturally occurring antibodies in camelids that are devoid of light chain, show great promise as an efficient tool in monitoring environmental contaminants, but they have been rarely used for small molecules. A...
Llamas (Lama glama) naturally produce heavy chain-only antibodies (Abs) in addition to conventional Abs. The variable regions (VHH) in these heavy chain-only Abs demonstrate comparable affinity and specificity for antigens to conventional immunoglobulins despite their much smaller size. To date, immunizations in humans and animal models have yielded only Abs with limited ability to neutralize H...
Carcinoembryonic antigen (CEA) is a biomarker and therapy target for non‑small cell lung cancer (NSCLC), which is the most common type of lung cancer. Nanobodies with high target specificity are promising candidates to function as anti‑CEA probes. In the present study, the targeting effects of an anti‑CEA nanobody obtained from phage display were investigated using technetium‑99 m (99mTc) and f...
چکید ه سابقه و هدف ریزش مارکرهای سرطانی مانند her2 از سطح سلول های سرطانی سینه، باعث مخفی ماندن آن ها از دید سلول های ایمنی می گردد. افزایش غلظت her2 محلول( sher2 )، در نتیجه درمان سرطان سینه her2+ و پاسخ به تراستوزومب، تاثیرگذار است. در همین راستا، آنتی بادی های تک دومینی شتری( vhh ) به علت خصوصیات منحصر به فرد و توانایی بالا در شناسایی آنتی ژن، مواد هدفمند بسیار مؤثری در شناسایی sher2 محس...
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