Bet v 1protein For many individuals, the arrival of spring brings not just blooming flowers but also unwelcome respiratory symptoms. Among the key instigators of these seasonal woes is Bet v 1, a protein predominantly found in birch pollenBet v 1, Biotinylated. Recognized as the major birch pollen allergen, Bet v 1 is responsible for a significant portion of type I allergies, a condition affecting approximately one in five people. This article delves into the scientific understanding of Bet v 1, its properties, its role in allergic reactions, and the ongoing research surrounding it.
Bet v 1 is scientifically classified as a protein belonging to the PR-10 protein family, also known as pathogenesis-related proteins. These proteins are believed to play a role in plant defense mechanisms. Bet v 1 is specifically derived from the European white birch ( *Betula pendula* or *Betula verrucosa*).Bet v 1 Allergen Details Its presence in birch pollen is significant, with some sources indicating it can constitute up to 95% of the pollen extract. This abundance makes it a primary trigger for sensitization and subsequent allergic reactions1997年9月17日—The three-dimensional structure of the major birch pollen allergen, the 17,500 M(r) acidic proteinBet v 1(from the birch, ....
The allergenic potential of Bet v 1 lies in its ability to elicit an immunoglobulin E-mediated (IgE-mediated) immune response. When an allergic individual inhales birch pollen, their immune system mistakenly identifies Bet v 1 as a harmful substance. This triggers the production of IgE antibodies specific to Bet v 1. Upon subsequent exposure, these IgE antibodies bind to mast cells and basophils, leading to the release of histamine and other inflammatory mediators.Bet v 1 Allergen Details This cascade of events results in the characteristic symptoms of birch pollen allergy, such as sneezing, runny nose, itchy eyes, and in severe cases, asthma.
A crucial aspect of Bet v 1's allergenic profile is its cross-reactivity. This means that the immune system's response to Bet v 1 can extend to similar proteins found in other plant-based foods and pollens. This phenomenon, known as oral allergy syndrome (OAS), is frequently observed in individuals sensitized to birch pollen. For instance, Bet v 1 shares a high degree of sequence identity with Mal d 1, the major allergen in applesBet v 1, Biotinylated. Consequently, people allergic to birch pollen often experience reactions when consuming raw apples, as well as other fruits like peaches and pears, and vegetables like carrots and celery. This cross-reactivity contributes to a broader spectrum of allergic symptoms and dietary restrictions for affected individualsIgE to Bet v 1 and profilin: Cross-reactivity patterns and ....
The scientific community has extensively studied Bet v 1. It is described as a heat labile protein with a molecular weight of approximately 171BV1: BIRCH POLLEN ALLERGEN BET V 1.5 kDa (kilodaltons). Research efforts have focused on elucidating its structure, function, and allergenic epitopes. The three-dimensional structure of Bet v 1 has been determined through techniques like X-ray crystallography and Nuclear Magnetic Resonance (NMR), providing insights into how it interacts with IgE antibodies.作者：A Atanasio·2022·被引用次数：56—A combination of mAbs targetingBet v 1, the immunodominant and most abundant allergenic protein in birch pollen, can prevent the birch allergic response.
The Bet v 1 fold is recognized as an ancient and versatile scaffold that binds various ligands. This structural characteristic is fundamental to understanding its allergenic capabilities作者：F Roth-Walter·2014·被引用次数：94—The major birch pollen allergenBet v 1is considered the prototype for the PR-10 protein family causing respiratory allergy. Here, we give structural evidence .... The protein family itself, PR-10, is widespread, and closely-related, cross-reactive allergens have been identified in the pollen of other trees, further emphasizing the significance of Bet v 1 as a prototype for this protein group.
Significant progress has been made in producing recombinant allergen Bet v 1 in laboratory settings. This allows for standardized testing and research without relying solely on natural pollen extracts. Recombinant Bet v 1, often expressed in systems like *E. coli* or SF9 cells, is purified and can be used in diagnostic tests and for developing immunotherapy strategies作者：M Wensing·2002·被引用次数：280—Cross-reactivity was studied by means of RAST inhibition. Results: Eighty-five percent of patients were sensitized toBet v 1, and 71% were sensitized to .... Different forms, such as Biotinylated Bet v 1 and Natural Bet v 1, are also available for specialized research applications.Birch pollen allergen Bet v 1 Recombinant Protein
Furthermore, research into Bet v 1 antibodies is ongoing.Anti-Bet v 1/Allergen Bet v I-A Antibody (SAA0655) Scientists are developing novel antibody cocktails targeting Bet v 1 to potentially treat birch allergy symptoms rapidly and sustainably. Studies have explored targeting immunodominant Bet v 1 epitopes with monoclonal antibodies (mAbs) to prevent or mitigate the allergic response.PSC-24-904 · Share · Click to email a link to a friend (Opens in new window) Email · Click to share on X (Opens in new window) X · Click to share on Facebook ( ...
Given its prevalence, Bet v 1 is considered a marker allergen for primary sensitization to pollen.The major birch pollen allergen,Bet v 1, is a member of the PR-10 family. Closely-related, cross-reactive allergens were found in the pollen of other trees ... This means that sensitization to Bet v 1 often indicates an initial allergic response to pollen, which can then lead to secondary sensitivities, such as those seen in OAS.作者：H Breiteneder·2023·被引用次数：35—The major sensitizing allergen present in birch pollen isBet v 1which is regarded as a marker allergen for a primary sensitization to pollen ... Diagnostic tools, including RAST inhibition studies, have shown that a high percentage of patients sensitized include those with IgE against Bet v 1. The availability of Bet v 1 protein and related antibodies facilitates accurate diagnosis and management of birch pollen allergy.
In summary, Bet v 1 stands as a pivotal player in the landscape of seasonal allergies. Its role as the major birch pollen allergen, coupled with its cross-reactive properties and extensive scientific investigation, underscores its importance in understanding and managing allergic diseases. Ongoing research into its structure, epitopes, and potential therapeutic targets promises further advancements in alleviating the burden of birch pollen allergy for millions worldwide.
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