Peptide pulsingprotocol Peptide Pulsing: A Key Strategy in Immunotherapy and Vaccine Development
Peptide pulsing is a critical technique in modern immunology, particularly in the development of advanced cancer immunotherapies and vaccines. This process involves loading antigen-presenting cells (APCs), most notably dendritic cells (DCs), with specific peptides that represent particular antigens. These antigen-presenting cells then present these peptides, triggering an immune response, primarily from T cells. The concept of peptide antigen pulsed onto APCs has been a cornerstone in understanding and manipulating the immune system to fight diseases like cancer and chronic infectionsCharacterization of antigen presentation capability for ....
The efficacy of peptide pulsing has been demonstrated across various research settingsA T-cell-based immunogenicity protocol for evaluating human .... For instance, peptide-pulsed T2 cells are routinely used to study T-cell activation by MHC-restricted peptides derived from tumor-associated antigens (TAAs), as highlighted in studies examining their role in research. Similarly, vaccines using ex vivo generated peptide-pulsed DCs have shown superior ability to induce tissue destruction compared to other vaccine techniques, suggesting their potential in therapeutic applications.Immunization with Epstein-Barr Virus (EBV) Peptide-pulsed ... The administration of multiple peptide-pulsed DCs combined with CTLs therapy has also shown promising results with manageable safety profiles for cancer patients.
The mechanism behind peptide pulsing is elegant作者:AL Kessler·2025·被引用次数:6—Synthetic longpeptides(SLPs) are a promising vaccine modality that exploit dendritic cells (DC) to treat chronic infections or cancer.. APCs play a pivotal role in initiating and shaping CD8+ T cell responses. When DCs are loaded with specific peptides, they become potent inducers of antigen-specific immune responses. This can lead to the generation of antigen-specific CTLs, which are crucial for eliminating infected or cancerous cells. Research indicates that peptide-pulsed PBMC are a safe, immunogenic, and effective immunotherapy. Furthermore, the route of immunization with peptide-pulsed, activated DC can lead to distinct distributions of memory CD8+ T cells in lymphoid organs, influencing the overall immune outcome作者:F Faure·2009·被引用次数:78—Pulsing with the corresponding short peptide, in contrast,results in a potent, but very brief ability to stimulate specific T cells. The ....
Studies have explored various applications of peptide pulsing. For example, Epstein-Barr Virus (EBV) Peptide-pulsed dendritic cells have been shown to induce functional CD8+ T-cell immunity and may contribute to tumor regression in patients with EBV-positive nasopharyngeal carcinoma. The use of synthetic long peptides (SLPs), which are pulsed onto DCs, is also a promising vaccine modality for treating chronic infections or cancer. In some contexts, pulsing with the corresponding short peptide results in a potent, but very brief, ability to stimulate specific T cells.
The process of peptide pulsing can be optimized through various methods. Research has investigated the efficiency of peptide presentation by dendritic cells and the molecular characterization of antigen-peptide pulsed cells. Different types of DCs, such as immature DCs (iDCs) and mature DCs (mDCs), can be pulsed with peptides, with varying transcriptional responses observed. The term "pulsed" in this context means that syngenic splenocytes were incubated with an antigenic peptide.作者:WJ LESTERHUIS·2010·被引用次数:128—To investigate the immune response against tumorpeptidesgenerated in vaccinated patients, DTH challenges were performed with mature DCs loaded with CEA ... Moreover, peptide pulsing can be combined with other immunomodulatory agents, such as poly(I:C:LC), with vaccination with peptide-pulsed DCs in combination with poly-ICLC is safe and induces a measurable tumor-specific T-cell population.Efficiency of peptide presentation by dendritic cells compared ...
While the primary focus has been on cancer immunotherapy, the underlying principles of peptide pulsing are relevant to understanding broader biological processes. For example, protein folding is the physical process by which a protein chain adopts its functional three-dimensional structure, a fundamental aspect of cellular biology.作者:S Mehrotra·2017·被引用次数:162—Vaccination with peptide-pulsed DCs in combination with poly-ICLC is safeand induces a measurable tumor specific T cell population in patients ... In a related therapeutic context, advancements in peptide-based medications are ongoing, with examples like Tirzepatide, a once-weekly subcutaneous injectable peptide, approved for type 2 diabetes and being investigated for obesity.
The technical aspects of peptide pulsing are also subjects of ongoing research. Protocols for pulsing peptides into dendritic cells are continually refined to maximize efficacy. For instance, studies examine the stability of peptides over time when diluted in cell culture media.作者:ML Nordin·2021·被引用次数:22—A multi-epitopepeptidevaccine encompassing cytotoxic T-lymphocytes, T-helper and B-cell epitopes represents a promising strategy in developing cancer ... SLLQHLIGL peptide pulsing has been employed in studies to demonstrate enhancement of bispecific-mediated therapies. Researchers are also investigating novel strategies, such as comparing the immunogenicity of DCs pulsed with peptides versus those transfected with mRNA encoding melanoma-associated antigens.
In summary, peptide pulsing is a sophisticated and effective immunological technique that plays a crucial role in generating targeted immune responses. Its application, particularly with dendritic cells, holds significant promise for the development of novel vaccines and immunotherapies for a range of diseases. The continuous research into optimizing peptide pulsing protocols and understanding its intricate mechanisms underscores its vital importance in advancing medical treatments.作者:I Rastogi·2025—APCs play a pivotal role in initiating and shaping CD8+ T cell responses, particularly in the context of cancer immunotherapy. While DCs have long been ...
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