ah1 peptide AH1-specific T cells - serum-brain-natriuretic-peptide AH1 peptide

serum-cheveux-anti-chute-peptides The AH1 peptide is a significant molecule in immunology, primarily recognized as a tumor-specific antigenic peptide that is restricted by MHC class I and presented by the murine MHC class I molecule Ld. This peptide, often referred to as the AH1 (6-14) peptide, is derived from the gp70 envelope glycoprotein of endogenous retroviruses, such as the murine leukemia virus (MuLV).Cancer therapy in mice using a pure population of CD8+ T cell ... Its role in eliciting an immune response, particularly the expansion of AH1-specific T cells, makes it a subject of considerable research in cancer immunology and immunotherapy.作者：M Stringhini·2021·被引用次数：15—AH1 is an antigenic peptidepresented on H-2Ld, which was first identified as the immunodominant antigen of the murine colon carcinoma cell line ... Understanding the structure, presentation, and immune interactions of the AH1 peptide is crucial for developing effective therapeutic strategies.

Origin and Structure of the AH1 Peptide

The AH1 peptide is an epitope sequence, typically spanning amino acids 6 to 14 of the gp70 proteinAH1 Sequence (6 - 14). Its specific amino acid sequence, SPSYVYHQF, allows it to bind with high affinity to the H-2Ld MHC moleculeCancer therapy in mice using a pure population of CD8+ T cell .... This binding is a critical step in initiating an immune response, as it enables the presentation of the peptide to cytotoxic T lymphocytes (CTLs), specifically CD8+ T cells. The identification of AH1 as an immunodominant antigen, particularly associated with murine colon carcinoma cell lines like CT26, has cemented its importance in cancer researchAH1 | The European Biology Institute.

Role in Tumor Immunology and Immunotherapy

The AH1 peptide plays a pivotal role in anti-tumor immunity. When presented on the surface of tumor cells by MHC class I molecules, it serves as a beacon for T cells that recognize it as foreign or abnormal. This recognition can trigger a cascade of events leading to the elimination of tumor cellsAH1 peptide (gp70 H2-Ld-restricted epitope) .... Research has shown that vaccination with protective peptides, including those related to AH1, can result in the expansion of AH1-specific T cells, which then produce cytokines like IFN-γ and effectively kill AH1-loaded target cells.

Furthermore, studies have explored the potential of AH1 peptide-based vaccines and immunotherapies. The ability of AH1 and related variants, such as AH1-A5 and AH1–5C, to bind MHC molecules with varying affinities has been investigated to optimize immune responses. For instance, some AH1 peptide variants have demonstrated higher sensitivity for T cells compared to others, suggesting that subtle sequence modifications can significantly impact immunogenicity.作者：JE Slansky·2000·被引用次数：410—AH1 and AH1-A5 Peptides Bind MHC with Similar Affinities. One possible mechanism to explain the increased binding of TCR to MHC-peptide complexes containing AH1 ... The development of tools like AH1 peptide-MHC tetramers has been instrumental in observing and quantifying AH1-specific T cell populations, aiding in the evaluation of therapeutic interventions.

AH1 Peptide in Research and Development

The AH1 peptide is widely used in preclinical research to model tumor immunity and test novel immunotherapeutic approaches. Its well-defined nature and association with specific tumor models, like the CT26 murine tumor, make it a valuable tool for studying T cell responses. Researchers utilize AH1 peptide-loaded tetramers for staining and analyzing CD8+ T cells, both ex vivo and after in vitro culture, to assess the efficacy of treatments.

Beyond its role in cancer, the concept of amphipathic alpha-helical peptides, including those designated AH1 and AH3, has emerged in other contexts, such as enhancing the immunogenicity of other proteins like EGFP.2020年11月18日—This amino acid substitution allowed a dramatic conformational change in thepeptideduring subsequent TCR engagement, creating a large increase ... While distinct from the tumor-specific AH1 peptide, this broader classification highlights the diverse applications of peptides in modulating immune responses.The length distribution of class I restricted T cell epitopes is ...

In summary, the AH1 peptide is a critical component in understanding tumor-specific immunity. Its precise interaction with MHC class I molecules and its capacity to stimulate cytotoxic T cell responses underscore its significance in the ongoing development of cancer therapiesFigure 4. Continued research into its presentation, recognition, and modulation promises further advancements in harnessing the immune system to combat cancerTheAH1 peptideis a H2-Ld-restricted epitope derived from the sequence of the gp70 envelope protein of the ecotropic mammalian C-type retrovirus, ....