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Dynamics Of Site Search Process And Formation Of Synaptosome Assembly Characterized By Single Molecule Approaches, Sridhar Vemulapalli
Dynamics Of Site Search Process And Formation Of Synaptosome Assembly Characterized By Single Molecule Approaches, Sridhar Vemulapalli
Theses & Dissertations
Genome dynamics and integrity are the two crucial features defining the successful functioning of cells and their maintenance and evolution. The genetic processes in the cell require distant communications between the regulatory regions controlled by specific proteins. Mistakes in this interaction process will lead to termination of the genetic process may lead to the cell damage, disease development or the cell death. Similar distant regulatory process is required for numerous genome integration systems such as Variable Diversity Joining (V(D)J) recombination system resulting in the specificity of the immunoresponse, a defining property of the adaptive immune system. A common feature of …
Gap Junctional Intercellular Communication: Role Of Cx43 Phosphorylation By Tyrosine Kinases, Ishika Basu
Gap Junctional Intercellular Communication: Role Of Cx43 Phosphorylation By Tyrosine Kinases, Ishika Basu
Theses & Dissertations
Phosphorylation of Cx43 is a process that regulates various functionalities of the gap junction including assembly, stability, internalization, turnover, channel permeability and channel gating. Src has been shown to phosphorylate Cx43 at Y247, Y265, Y313 and regulate gap junctions. Intercellular communication in B and T cells is necessary to mediate adaptive immune response. However, there is little-to-no expression of Src in these lymphocytes. An in vitro kinase screen identified Bruton’s tyrosine kinase (BTK) and Interleukin 2-inducible T-cell kinase (ITK) to phosphorylate Cx43. Mass spectrometry identified Tyr residues to be phosphorylated by BTK and ITK, and these residues are similar to …
Exploiting Vulnerabilities In The Ras-Rac Signaling Pathway For The Selective Targeting Of Pancreatic Cancer Cells, Neha Chaudhary
Exploiting Vulnerabilities In The Ras-Rac Signaling Pathway For The Selective Targeting Of Pancreatic Cancer Cells, Neha Chaudhary
Theses & Dissertations
Deregulation of the KRas (Kirsten rat sarcoma virus) GTPase is one of the early hallmarks of Pancreatic Cancer (PC). The most common genetic alteration found in PC are mutations in the KRas protein that block its ability to hydrolyze GTP to GDP and resulting in higher levels of GTP-bound KRas, its active form. Pancreatic tumors driven by oncogenic mutants of KRas tend to be addicted to the oncogene, to the extent that its repression leads to the induction of cell death. This addiction to the KRAS oncogene makes the KRas protein an ideal target for cancer therapy. However, the globular …
Improving Peripheral Nerve Regeneration Through Rehabilitation And Biomaterial-Based Drug Delivery Strategies, Yunfan Kong
Improving Peripheral Nerve Regeneration Through Rehabilitation And Biomaterial-Based Drug Delivery Strategies, Yunfan Kong
Theses & Dissertations
Peripheral nerve injury (PNI) is a common problem worldwide, with trauma being a common cause. PNI can lead to loss of sensory and motor functions, chronic neuropathic pain, and mental health issues, significantly impacting patients' family life, work, and social situation. Recent studies revealed that beyond the topical injury site at peripheral nerves, PNIs can also induce dysfunctions in the central nervous system (CNS) by causing maladaptive plasticity, which will result in exaggeration and exacerbation of the pathological condition caused by primary injuries. The common therapy strategies for PNI treatment are using sutures, nerve autografts or conduits in cases requiring …
Synaptic Transmission At The Photoreceptor Ribbon Synapse, Chris Mesnard
Synaptic Transmission At The Photoreceptor Ribbon Synapse, Chris Mesnard
Theses & Dissertations
Synaptic transmission relies on the Ca2+-dependent release of neurotransmitters packaged into synaptic vesicles. Ribbon synapses have the capability to release multiple vesicles at a time in a highly coordinated and synchronized manner. Glutamate release from rod and cone photoreceptor cells involves presynaptic ribbons composed largely of the protein RIBEYE. To examine roles of ribbons in rods and cones, we studied mice in which GCamP3 replaced the B-domain of RIBEYE. We discovered that ribbons were absent from rods and cones of both knock-in mice possessing GCamP3 and conditional RIBEYE knockout mice. Mice lacking ribbons showed reduced temporal resolution and …
Growth Plate Cartilage: Understanding The Contribution Of Adhesion To Column Formation And Matrix Structure, Sydney E. Greer
Growth Plate Cartilage: Understanding The Contribution Of Adhesion To Column Formation And Matrix Structure, Sydney E. Greer
Theses & Dissertations
Throughout fetal and adolescent development, bone growth is regulated by fine-tuned and controlled maturation of chondrocytes through a cartilaginous template called the growth plate. Bone growth rate is controlled through cell enlargement and extracellular matrix deposition, while the polarized arrangement of proliferative chondrocytes into columns aligned with the long axis of the bone potentiate growth. Chondrocytes are surrounded by a complex three-dimensional arrangement of matrix molecules, all of which are secreted by chondrocytes and assembled/remodeled to support the biological functions of the cell. Adhesion receptors found on the cell membrane of chondrocytes are crucial to the organization of matrix proteins …