Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 93 for “"T cell receptor (TCR)"”.
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Searching for the missing T Cell Receptor (TCR) in Anaplastic Large Cell Lymphoma (ALCL): Surplus to requirements or a protagonist in lymphomagenesis?
Anaplastic Large Cell Lymphoma (ALCL) is a peripheral T cell lymphoma divided into three distinct entities: ALCL, Anaplastic Lymphoma Kinase (ALK)+, ALCL ALK- and cutaneous ALCL. In the majority of ALCL, ALK+, ALK is expressed as the result of a chromosomal translocation generating Nucleophosmin …
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Characterization of a single-chain anti-T cell receptor antibody and a single-chain T cell receptor
The T cell receptor (TCR) is a cell surface protein that specifically binds to a foreign antigen on the surface of another cell. The TCR is made up of two disulfide-linked chains (called $\alpha$ and $\beta$) each containing a variable and a constant domain. The tertiary structure and binding …
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T-cell receptor diversity of various antigen-specific T cells
T cells recognize foreign antigen through a heterodimeric $\alpha\beta$ T-cell receptor (TCR). The TCR ligand is a peptide bound to a membrane-bound protein coded by the major histocompatibility complex (MHC) locus. Like immunoglobulins, the TCR repertoire is diverse because both the $\alpha$ and …
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The scaffold protein POSH regulates T lymphocyte function
… mediators of the adaptive immune response. T cell receptor (TCR) mediated cJUN NH2-terminal kinase (JNK) activation is required for mounting proper T cell mediated immune responses. However, little is know as to how JNK activation is coupled to the TCR. This dissertation shows that the …
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Characterization of a T cell receptor and its ligands
Cytotoxic T lymphocytes (CTL) recognize and lyse cells presenting viral or tumor-associated antigens associated with class I major histocompatibility complex proteins. Recognition occurs between the T cell receptor (TCR) and a complex of an antigenic peptide/major histocompatibility complex (MHC) …
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A Single Cell Approach to TCR Signal Strength
… T lymphocytes (CTLs) play a key role in the cell-mediated immune response against virally-infected and tumourigenic cells, killing their targets through the release of cytolytic granules. T cell receptor (TCR) recognition of foreign peptides presented by Class I MHC molecules stimulates naïve …
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Molecular genetics of the T cell receptor alpha chain
… and nucleotide sequence analysis to examine T cell receptor (TCR) alpha chain diversity in fetal and adult thymi. Transcripts were amplified using various V$\alpha$ and C$\alpha$ specific primers and the cloned PCR products were hybridized with J$\alpha$ specific oligonucleotide probes in order …
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Il-6/Jak1 Drives Pd-L1 Phosphorylation and Glycosylation to Promote Cancer Immune Evasion
<p>Glycosylation of immune receptors and ligands, such as T-cell receptor (TCR), major histocompatibility complex (MHC), and co-inhibitory molecules, regulates immune signaling activation, antigen presentation, and immune surveillance. Recent studies revealed that the glycan structures of …
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Characterization of a Novel Signaling Motif in the CD3 ε Subunit of the T Cell Receptor
The T cell receptor (TCR) complex consists of the ligand-binding α/β heterodimer as well as four associated signaling chains (CD3 γ, δ, ε, and ζ). Each of the CD3 subunits contains one or more copies of a signaling motif termed an immunoreceptor tyrosine-based activation motif (ITAM). …
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Statistical Methods for Biological and Relational Data
… expression data have high-dimensionality, and T-cell receptor (TCR) data under-sample receptor populations. For relational data, there are dependencies among the observations. This thesis outlines statistical methods for biological and relational data. The methods include classification, multiple …
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Delivery of antigens to dendritic cells as a platform for a vector-free cancer therapy
Cell based vaccines that activate a patient's immune system via an antigen-specific CD8 T cell response hold much therapeutic potential. One of the greatest challenges in the development of these vaccines is creating antigen presentation by delivery of antigens into the cell cytoplasm. It has been …
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Preventing Thymus Involution In K5.Cyclin D1 Transgenic Mice Sustains The Naïve T Cell Compartment With Age
<p>The thymus maintains T cell receptor (TCR) repertoire diversity through perpetual release of self-MHC restricted naive T cells. However, thymus involution during the aging process reduces naïve T cell output, leading to defective immune responsiveness to newly encountered antigens. We have found …
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The mechanobiology of the T-Cell Receptor: Structurally connecting catch bonds with ligand binding and triggering
… the activation of CD3 signaling domains by the T-Cell Receptor (TCR) are studied. The first part is focused to investigate how the information encoded in the peptide is decoded mechanically by the TCR and what is the structural role of catch bonds. It is proposed that TCRs uses catch bonds to …
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Combined experimental and modeling studies reveal new mechanisms in T cell antigen recognition
T cells of the immune system recognize small antigen peptide fragments loaded onto Major Histocompatibility Complex (pMHC) molecules through their T Cell Receptor (TCR). The recognition of antigenic pMHC by the TCR is an extremely sensitive and specific process, discriminating as few as a single …
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Effects of Thymus Size and Involution On The Contribution of Recent Thymic Emigrants to The Peripheral T Cell Pool
… emigrants (RTEs) to the peripheral naïve T cell population is necessary to maintain diversity of the T cell receptor (TCR) repertoire and produce immune responses against newly encountered antigens.</p> <p>The thymus involutes with age, after irradiation or chemotherapy, and due to severe …
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T-Cell Treatments For Solid and Hematological Tumors
<p>Cell-based therapies have demonstrated potency and efficacy as cancer treatment modalities. T cells can be dichotomized by their T cell receptor (TCR) complexes where alpha/beta T cells (95% of T cells) and gamma/delta T cells (+T cells proliferated to clinically significant numbers and …
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Mechanisms of CD4+ Regulatory T Cell Heterogeneity in Health and Disease
Regulatory T (Treg) cells are central to the maintenance of immune homeostasis and their dysfunction underlies the pathology of numerous diseases. Treg cell populations are phenotypically heterogeneous, comprising functionally quiescent resting Treg (rTreg) cells, which upon antigen stimulation, …
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The interferon alpha receptor utilises T-cell receptor-associated proteins for signalling
The interferon alpha receptor (IFNAR) and T-cell receptor (TCR) are expressed upon the T-cell surface. The dimeric Class I interferon receptor is a cytokine receptor that recognises interferons such as IFNα. Interferons (IFNs) are pluripotent, antiviral cytokines that causes antiproliferative …
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Characterizing the role of thymic interferon in T cell development and selection
… induced during infections, where they protect cells against viral infection and activate immune cells. Curiously, both type I and type III IFNs were reported to be produced at low levels in the thymus in the absence of infection – the site of T cell development and a crucial organ for immune …
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The Expression Of Connexin-43 By CD11c+ Dendritic Cells Is Required to Maintain CD4+ Foxp3+ Regulatory T Cell Population in Peripheral Lymphoid Organs
<p>Foxp3<sup>+</sup> regulatory T cells (T<sub>R</sub>) are an immunosuppressive subset of CD4<sup>+</sup> T cells that maintain homeostasis of the immune system. They are sustained by the interaction between the Major Histocompatibility Complex (MHC) molecules present on antigen presenting …
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