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Articles 1 - 30 of 92
Full-Text Articles in Cell and Developmental Biology
Functional Analysis Of The Gamma-Aminobutyric Acid Type A Receptor Subunit Alpha-1 (Gabra1) Gene During Zebrafish Development., Nayeli Gabriela Reyes-Nava
Functional Analysis Of The Gamma-Aminobutyric Acid Type A Receptor Subunit Alpha-1 (Gabra1) Gene During Zebrafish Development., Nayeli Gabriela Reyes-Nava
Open Access Theses & Dissertations
The GABRA1 gene encodes for the alpha-1 (α1) subunit of the Gamma-Aminobutyric acid type A receptor (GABAAR), which are the primary modulators of synaptic inhibition in the central nervous system (CNS). Alpha-1 subunits are essential for maintaining the normal function of native receptors and contribute to over 60% of all GABAARs in the CNS. Remarkably, a broad spectrum of neurodevelopmental and epilepsy-associated disorders have been linked with mutations in the GABRA1 gene. However, the developmental, behavioral, and molecular mechanisms underlying GABRA1-associated epileptic disorders remain to be fully understood. Hence, the overarching goal of this dissertation is to investigate the behavioral …
Neurogenetic Function Of Host Cell Factor-1, Victoria Lynn Castro
Neurogenetic Function Of Host Cell Factor-1, Victoria Lynn Castro
Open Access Theses & Dissertations
Neural precursor cells (NPCs) are the stem-like cells of the developing brain. These cells differentiate into the differentiated cell types of the central nervous system. If disruption occurs in the number of total NPCs formed or their survival, various disorders including learning disabilities, behavioral problems, or epilepsy can occur. This dissertation describes how the HCFC1 gene controls the proliferation and differentiation of NPCs. HCFC1 encodes for a transcriptional co-factor that regulates the growth and metabolism of stem cells, including NPCs. Mutations in HCFC1 cause cblX syndrome, a neural developmental disorder that affects the nervous system and causes microcephaly, epilepsy, and …
Effects Of Withania Somnifera On Zebrafish, Diyari Bekhtyar
Effects Of Withania Somnifera On Zebrafish, Diyari Bekhtyar
Student Works
Withania somnifera (commonly known as Ashwagandha), is a plant in which its root powder is sold as a dietary supplement. It is being commonly used as an anti-anxiety supplement to combat stress. While the sale of Withania somnifera is widely accessible and available throughout the U.S., it is concerning that a number of teens and young adults are taking this supplement without consulting a physician. Previous studies and claims conclude that Withania somnifera has both neuroprotective and antiinflammatory properties in human neuronal cells. We have chosen to test Withania somnifera’s effects on early embryonic development using Danio rerio, zebrafish, as …
The Effects Of Cucurbitacin B And Silmitasertib On Metastasis And Itga6 Using The Zebrafish Tumor-Xenograft, Alexandra Griffis
The Effects Of Cucurbitacin B And Silmitasertib On Metastasis And Itga6 Using The Zebrafish Tumor-Xenograft, Alexandra Griffis
Electronic Theses and Dissertations
Ninety percent of cancer deaths are resultant from the metastasis of cancer cells. When cancer cells translocate through blood vessels or the lymphatic system, they may form tumors outside of their primary site. The processes of metastasis can begin quickly; after onset, metastasis is unforgiving, as it does not participate with the body’s physiological systems in an orderly way. In the past, our lab produced results indicating that a cell adhesion molecule, Integrin Alpha-6, may contribute to cancer cells' ability to metastasize. Integrins mediate interactions between the cell and the Extracellular Matrix (ECM), regulating cell attachment and cell migration. With …
Knockout Of Endospanin 1 Via Crispr In Zebrafish, Danio Rerio, Jared Kittinger
Knockout Of Endospanin 1 Via Crispr In Zebrafish, Danio Rerio, Jared Kittinger
Williams Honors College, Honors Research Projects
I made endospanin 1 knockout (KO) zebrafish to examine its effects on lipid and bone metabolism. Endospanin 1, or leptin receptor overlapping transcript (leprot), is a cytosolic protein linked to the protein hormone leptin that influences the trafficking of leptin receptors to the plasma membrane of cells. Genes for endospanin and tyrosinase (a pigmentation enzyme) were targeted via a microinjection of guide RNAs and CRISPR Cas9 into zebrafish embryos at 2-4 cell stages. I was able to disrupt the endospanin 1 gene (based upon the disruption of tyrosinase), but very few mutant zebrafish fully developed into adults. Only low KO …
The Effects Of Sex On Zebrafish Bone Metabolism, Simon Bagatto
The Effects Of Sex On Zebrafish Bone Metabolism, Simon Bagatto
Williams Honors College, Honors Research Projects
I investigated the effects of diet and sex on zebrafish bone metabolism. Zebrafish were subjected to either a high-calorie or low-calorie diet over a five-week period. After this diet, zebrafish scales were used to measure alkaline phosphatase (ALP) and tartrate-resistant acid phosphatase (TRAP) enzyme activity with a fluorescent substrate. The enzyme activities were markers of the osteoblasts (ALP) and the osteoclasts (TRAP). These data were compared among sex and diet of the zebrafish using a repeated measures ANOVA statistical test. I also measured the number of resorption lacunae per scale (another indicator of osteoclast activity). The results showed higher TRAP …
Developmental Exposures To Pfas Mixtures Impair Elongation Of The Exocrine Pancreas In Zebrafish (Danio Rerio), Emily M. Formato
Developmental Exposures To Pfas Mixtures Impair Elongation Of The Exocrine Pancreas In Zebrafish (Danio Rerio), Emily M. Formato
Masters Theses
Poly- and perfluoroalkyl substances (PFAS) are a class of bioaccumulative toxicants used in numerous industrial and commercial products. Perfluorooctanesulfonic acid (PFOS) alters pancreatic organogenesis during development, and perfluorohexanesulfonic acid (PFHxS) has been suggested as a replacement for PFOS due to its shorter carbon chain, but they are often found together in surfactants, such as legacy aqueous film-forming foam. This study investigates how developmental exposures to a PFAS mixture (PFHxS + PFOS) impact the developing exocrine pancreas. Zebrafish embryos (Tg(ptf1a:GFP)) were exposed to 0.01% DMSO, or 8, 16, 32 μM PFHxS alone, 16 μM PFOS alone, and 8, 16, and 32 …
Modeling Developmental, Molecular, And Behavioral Effects Of An Apolipoprotein-E4 Fragment On The Embryogenesis Of Zebrafish, Madyson Mccarthy
Modeling Developmental, Molecular, And Behavioral Effects Of An Apolipoprotein-E4 Fragment On The Embryogenesis Of Zebrafish, Madyson Mccarthy
Boise State University Theses and Dissertations
Although the increased risk of developing sporadic Alzheimer’s disease (AD) associated with the inheritance of the apolipoprotein E4 (APOE4) allele is well characterized, the molecular underpinnings of how ApoE4 imparts risk remains unknown. Enhanced proteolysis of the ApoE4 protein with a toxic-gain of function has been suggested and a 17 kDa amino-terminal ApoE4 fragment (nApoE41-151) has been identified in post-mortem human AD frontal cortex sections. Recently, we demonstrated in vitro, exogenous treatment of nApoE41-151 in BV2 microglial cells leads to uptake, trafficking to the nucleus and increased expression of genes associated with cell toxicity …
Spatiotemporal Characterization Of The Prr12 Paralogues In Zebrafish, Renee Jeannine Resendes
Spatiotemporal Characterization Of The Prr12 Paralogues In Zebrafish, Renee Jeannine Resendes
Electronic Thesis and Dissertation Repository
Pathogenic variants in the human PRR12 (Proline Rich 12) gene are associated with PRR12-related Neuroocular Syndrome. However, little is known about the gene/protein function. The zebrafish was utilized to address this, as its attributes place it as a premier model to study genes involved in human development and disease. In situ hybridization and RT-PCR of embryos and larvae, and qRT-PCR of adult tissues revealed the spatial and temporal distributions of the prr12 paralogues: prr12a and prr12b. Both paralogues were detected from the maternal and zygotic transcriptomes in a global and diffuse expression pattern, and there was enrichment …
The Transcription Factor Nfe2l2a Is Required For Development Of Hematopoietic Stem Cells In The Zebrafish Embryo, Sivam Bhatt, Teerth Patel, Madeleine Seputro, Anubhav Thapaliya, Erich Damm
The Transcription Factor Nfe2l2a Is Required For Development Of Hematopoietic Stem Cells In The Zebrafish Embryo, Sivam Bhatt, Teerth Patel, Madeleine Seputro, Anubhav Thapaliya, Erich Damm
Undergraduate Research Posters
Hematopoietic Stem Cells (HSCs) are the self-renewing population of cells that generate all erythrocytes and leukocytes over the lifetime of a vertebrate organism. HSCs are also the therapeutic units of curative bone marrow transplants used in the treatment of blood malignancies and in gene therapy for genetic blood disorders. In all vertebrate embryos, HSCs originate from the floor of the embryonic dorsal aorta during the endothelial to hematopoietic transition. Nascent HSCs will bud into the blood vessel and be carried to maturation sites by the embryonic blood flow. Despite the curative potential of HSC transplants in blood disorders, this approach …
Investigating The Role Of Chd7 And Sox11 In Retinal Cell Development And The Ocular Complications Of Charge Syndrome, Laura Krueger
Investigating The Role Of Chd7 And Sox11 In Retinal Cell Development And The Ocular Complications Of Charge Syndrome, Laura Krueger
Theses and Dissertations--Biology
Proper formation of the visual system requires the precise interaction of several embryonic cell lineages, including the neuroectoderm (forms the retina and retinal pigment epithelium), surface ectoderm (forms the lens), mesoderm and cranial neural crest cells (form the ocular blood vessels and anterior ocular structures). When this process is disrupted structural birth defects such as coloboma result, leading to pediatric visual deficits. Ocular developmental defects are often present in larger syndromic disorders. One example is CHARGE syndrome, a genetic disorder characterized by coloboma, heart defects, choanal atresia, growth retardation, genital abnormalities, and ear abnormalities. Pathogenic variants in CHD7 have been …
The Role Of Sox4 In Ocular Morphogenesis And Retinal Differentiation, Rebecca Petersen
The Role Of Sox4 In Ocular Morphogenesis And Retinal Differentiation, Rebecca Petersen
Theses and Dissertations--Biology
Visual impairment ranges from mild forms that can be corrected with glasses to more severe cases that result in permanent loss of vision. Microphthalmia, anophthalmia, and coloboma (collectively referred to as MAC) account for 11% of cases of pediatric blindness and are a result of improper ocular morphogenesis. Retinitis Pigmentosa (RP) is a retinal degenerative disease that affects 1 in 3000 people worldwide. It is a progressive disorder that initially begins with loss of vision in low light settings due to rod photoreceptor degeneration but progresses to complete blindness upon loss of cone photoreceptors. Currently, there is no cure for …
Understanding The Effects Of Embryonic Hyperglycemia On Retinal Development And Maintenance, Kayla Titialii-Torres
Understanding The Effects Of Embryonic Hyperglycemia On Retinal Development And Maintenance, Kayla Titialii-Torres
Theses and Dissertations--Biology
Hundreds of millions of people are affected by diabetes worldwide. Whether they are diagnosed with prediabetes or Type I or II diabetes, there are a variety of mechanisms in the pathogenesis of diabetes. Diabetes is a disease which consists of recurring states of hyperglycemia that can be difficult to manage due to either lack of insulin production or improper utilization of insulin. While these mechanisms of action differ, complications induced by diabetes occur in both poorly regulated Type I and II. Common complications of diabetes include nerve damage, kidney damage, and eye damage. Eye damage specifically is called diabetic retinopathy …
Deoxyribose Phosphate Aldolase Is Required For Development Of Hematopoietic Stem Cells In The Zebrafish Embryo, Anubhav Thapaliya, Sanyam Patel, Teerth Y. Patel, Sivam J. Bhatt, Erich W. Damm
Deoxyribose Phosphate Aldolase Is Required For Development Of Hematopoietic Stem Cells In The Zebrafish Embryo, Anubhav Thapaliya, Sanyam Patel, Teerth Y. Patel, Sivam J. Bhatt, Erich W. Damm
Undergraduate Research Posters
Hematopoietic stem cells (HSCs) are an integral part of modern biomedical research because they are precursors to all blood cell lineages in vertebrates. Further understanding of hematopoietic development will allow for improvements in the success of therapeutic bone marrow transplantation; which is a crucial treatment in management of both malignant and non-malignant blood disorders. Although HSC transplantation is curative for many blood disorders, finding compatible donors is difficult due to a need for immunologic compatibility. Consequently, recent research efforts have been directed towards generating HSCs for the patient, from the patient themselves through the directed differentiation of induced pluripotent stem …
Identifying And Knocking Out Non-Visual Opsins In The Optic Tectum Of Zebrafish Larvae, Sarah Jarrett
Identifying And Knocking Out Non-Visual Opsins In The Optic Tectum Of Zebrafish Larvae, Sarah Jarrett
Undergraduate Honors Theses
Deep brain photoreceptors (DBPs) are non-visual photoreceptors found in the brains of non-mammalian vertebrates like zebrafish. While using optogenetic techniques in our lab to photo-activate the ear (by expressing the light-gated channel: channelrhodopsin) in efforts of identifying optic tectum (OT) neurons that respond to and integrate auditory and visual stimuli, we found that violet light was able to elicit OT neuronal activity. OT activity was also detected in cases when visual and auditory stimulation was not possible due to removal of the eyes and absence of the exogenously expressed channelrhodopsin, respectively. Analyzing OT single-cell sequencing data of 7day post fertilization …
The Effect Of Twist1b And Twist2 Knockdown On Tgf-Beta Signaling Expression In Tendon Progenitors, Marinia N. Bishay
The Effect Of Twist1b And Twist2 Knockdown On Tgf-Beta Signaling Expression In Tendon Progenitors, Marinia N. Bishay
Honors Scholars Collaborative Projects
Somites are important mesoderm structures that form in regularly timed intervals from the anterior end of the paraxial mesoderm at the end of gastrulation during embryogenesis. Cells of the ventromedial portion of the somite, the sclerotome, undergo epithelial to mesenchymal transition, surround the notochord, and give rise to connective tissues of the axial skeleton including the vertebrae, tendons, and ligaments. We are interested in understanding how the sclerotome is compartmentalized into the region that makes tendons. Genes expressed in the sclerotome, twist1 and twist2, are likely involved in the downstream differentiation of sclerotome to tendon progenitors. Previous studies have shown …
Activation Of Nrf2 At Critical Windows Of Development Alters Protein S-Glutathionylation In The Zebrafish Embryo (Danio Rerio), Emily G. Severance
Activation Of Nrf2 At Critical Windows Of Development Alters Protein S-Glutathionylation In The Zebrafish Embryo (Danio Rerio), Emily G. Severance
Masters Theses
Perturbation of cellular redox homeostasis to a more oxidized state has been linked to adverse human health effects such as diabetes and cancer. However, the impact of altering the regulation of redox homeostasis during development is not fully understood. Specifically, this project investigates the role of the Nrf2 antioxidant response pathway and its effect on glutathione (GSH; cellular redox buffer) at critical windows of development. To explore this, we used zebrafish embryos (Danio rerio) as a model due to the function of GSH and the Nrf2 being conserved among vertebrates. We exposed zebrafish embryos to three Nrf2 activators: two antioxidant …
Investigating The Developmental Impacts Of 3,3’-Dichlorobiphenyl (Pcb-11) In Zebrafish (Danio Rerio), Monika A. Roy
Investigating The Developmental Impacts Of 3,3’-Dichlorobiphenyl (Pcb-11) In Zebrafish (Danio Rerio), Monika A. Roy
Doctoral Dissertations
The environmental pollutant 3,3’-dichlorobiphenyl (PCB-11) is a lower-chlorinated polychlorinated biphenyl (PCB) congener present in air and water samples. Both PCB-11 and its metabolite, 4-PCB-11-Sulfate, are detected in humans, including in pregnant women. The work conducted for this dissertation takes a developmental toxicology approach and uses zebrafish (Danio rerio) to investigate PCB-11’s potential impacts to the liver and pancreas. Chapter 1 introduces PCBs and the current knowledge gaps. Chapter 2 investigates PCB-11 interactions in short-term 4-day exposures with the Aryl hydrocarbon receptor (Ahr) pathway in both 0-20 mM individual and mixture exposures with other Ahr agonists. In Chapter 3, …
Collagen Xi Impact On Structure And Function Of The Vertebrate Inner Ear In A Zebrafish Model, Makenna Hardy
Collagen Xi Impact On Structure And Function Of The Vertebrate Inner Ear In A Zebrafish Model, Makenna Hardy
Boise State University Theses and Dissertations
The ear is essential to maintaining balance and hearing; both of which can be linked to one another and significantly impact a person’s quality of life. Although aging and damage are more common reasons for hearing loss, congenital ear defects still have a considerable impact on our population. The function of the ear can be affected by structural deformities to the ear and its components which results in hearing loss. Mutations and single nucleotide polymorphisms in the gene encoding Collagen XI alpha one chain (COL11A1) protein can play a role in hearing and balance dysfunction in humans as seen in …
Zebrafish (Danio Rerio) Hoxb6: An Exploration Into The Divergence Of Genomic Dna Sequence And Gene Expression Across Teleost Fishes Post-Genome Duplication, Amber Lynn Rittgers, Pierre Le Pabic, Adam Davis
Zebrafish (Danio Rerio) Hoxb6: An Exploration Into The Divergence Of Genomic Dna Sequence And Gene Expression Across Teleost Fishes Post-Genome Duplication, Amber Lynn Rittgers, Pierre Le Pabic, Adam Davis
Georgia Journal of Science
Hoxb6 is an evolutionarily conserved developmental regulatory gene that functions, in part, to pattern several organs and organ systems within the embryonic trunk during vertebrate embryogenesis. The cis-regulatory circuitry mediating trunk expression in mouse (Mus musculus) may be conserved across gnathostome vertebrates, as several other species show similar trunk expression patterns, including chicken (Gallus gallus), dogfish shark (Scyliorhinus canicula), and several teleost fishes. A whole genome duplication event that occurred in the lineage leading to teleost fishes has generated at least two Hoxb6 genes, hoxb6a and b6b. Two teleost fishes of the …
The Influence Of Autism Linked Gene Topoisomerase 3b (Top3b) On Neural Development In Zebrafish, Sydney Doolittle
The Influence Of Autism Linked Gene Topoisomerase 3b (Top3b) On Neural Development In Zebrafish, Sydney Doolittle
Honors College Theses
Autism Spectrum Disorder is a class of developmental disabilities characterized by a spectrum of social, communication, and behavioral impairments in affected individuals. Studies have shown these defects stem from abnormal brain development during critical periods during early development. The underlying genetic cause of these impairments is not well understood but is believed to be a combination of a complex pairing of genetic and environmental factors. One of the genetic factors that has been recognized to influence the phenotypic symptoms of ASD is the enzyme topoisomerase 3β (top3β.) Topoisomerases are responsible for the prevention of supercoiling during DNA replication. Top3β is …
A New Mathematical Theory For The Dynamics Of Large Tumor Populations, A Potential Mechanism For Cancer Dormancy & Recurrence And Experimental Observation Of Melanoma Progression In Zebrafish, Adeyinka A. Lesi
Dissertations and Theses
Cancer, a family of over a hundred disease varieties, results in 600,000 deaths in the U.S. alone. Yet, improvements in imaging technology to detect disease earlier, pharmaceutical developments to shrink or eliminate tumors, and modeling of biological interactions to guide treatment have prevented millions of deaths. Cancer patients with initially similar disease can experience vastly different outcomes, including sustained recovery, refractory disease or, remarkably, recurrence years after apparently successful treatment. The current understanding of such recurrences is that they depend on the random occurrence of critical mutations. Clearly, these biological changes appear to be sufficient for recurrence, but are they …
Therapeutic Targeting Of Leukemia Stem Cells To Prevent T-Cell Acute Lymphoblastic Leukemia Relapse, Meghan G. Haney
Therapeutic Targeting Of Leukemia Stem Cells To Prevent T-Cell Acute Lymphoblastic Leukemia Relapse, Meghan G. Haney
Theses and Dissertations--Molecular and Cellular Biochemistry
The survival rate of T-cell Acute Lymphoblastic Leukemia (T-ALL) relapse is a dismal 10% of affected adults and 30% of children, largely due to the relapsed disease being more aggressive and treatment resistant than the initial disease. Relapse is thought to occur because conventional chemotherapies are unable to reliably eliminate a unique cell type known as leukemia stem (or propagating) cells (LSCs). LSCs are the only cells within the leukemia with the ability to self-renew and remake or replenish the ALL from a single cell. Currently, the pathways governing self-renewal in LSCs are largely unknown, precluding our ability to successfully …
Using Zebrafish To Elucidate The Expression And Gene Regulatory Network Of The Genomic Screen Homeobox Transcription Factors And Bring Innovative Science Learning Experiences To West Virginia, Rebecca Ann Coltogirone
Using Zebrafish To Elucidate The Expression And Gene Regulatory Network Of The Genomic Screen Homeobox Transcription Factors And Bring Innovative Science Learning Experiences To West Virginia, Rebecca Ann Coltogirone
Graduate Theses, Dissertations, and Problem Reports
Central nervous system (CNS) development requires a code of regionally expressed transcription factors that impart initial neuronal cell identity, connectivity, and function. The absence of a transcription factor code would eliminate the neurodevelopmental logic producing diverse cell types in the CNS. Furthermore, early disruptions in transcription factor expression can affect later connectivity and function of neuronal circuits mediating sensory processing, defects in which are often observed as comorbid with various neurodevelopmental disorders (NDDs). Characterizing transcription factor expression and function is therefore an essential step in discerning the molecular mechanisms underlying human NDDs. genomic screen homeobox 1 and 2 (gsx1 …
Proteasome-Mediated Regulation Of Cdhr1a By Siah1 Modulates Photoreceptor Development And Survival In Zebrafish, Warlen P. Piedade, Kayla F. Titialii-Torres, Ann C. Morris, Jakub K. Famulski
Proteasome-Mediated Regulation Of Cdhr1a By Siah1 Modulates Photoreceptor Development And Survival In Zebrafish, Warlen P. Piedade, Kayla F. Titialii-Torres, Ann C. Morris, Jakub K. Famulski
Biology Faculty Publications
Congenital retinal dystrophies are a major cause of unpreventable and incurable blindness worldwide. Mutations in CDHR1, a retina specific cadherin, are associated with cone-rod dystrophy. The ubiquitin proteasome system (UPS) is responsible for mediating orderly and precise targeting of protein degradation to maintain biological homeostasis and coordinate proper development, including retinal development. Recently, our lab uncovered that the seven in absentia (Siah) family of E3 ubiquitin ligases play a role in optic fissure fusion and identified Cdhr1a as a potential target of Siah. Using two-color whole mount in situ hybridization and immunohistochemistry, we detected siah1 and cdhr1a co-expression as well …
Regulation Of Yolk Microtubule Dynamics By Dachsous Cadherins, Gina Danielle Castelvecchi
Regulation Of Yolk Microtubule Dynamics By Dachsous Cadherins, Gina Danielle Castelvecchi
Arts & Sciences Electronic Theses and Dissertations
The process of epiboly, or the thinning and spreading of a tissue, is a well-conserved morphogenetic process. As one of four conserved gastrulation cell movements, epiboly is important to help organize the overall body plan. Epiboly in zebrafish involves the thinning and spreading of the blastoderm originating from the animal pole to completely enclose the yolk. It is driven by a multitude of physical processes that involve the three cell types comprising the embryo: the yolk syncytial layer (YSL), enveloping layer (EVL), and deep cells. These physical aspects can be broadly described as involving cell-cell interactions through adhesion proteins, actomyosin …
The Role Of Homologous Cyclin B’S In The Cell Cycle And, In Their Absence, The Effect On Zebrafish Early Development, Tetiana Petrachkova
The Role Of Homologous Cyclin B’S In The Cell Cycle And, In Their Absence, The Effect On Zebrafish Early Development, Tetiana Petrachkova
Dissertations
Regulation of cell division is essential for normal embryo development. The Cyclins and their Cyclin-dependent kinases are key regulators controlling this process. In this thesis, I examine the role of cyclin B1 and cyclin B2 in zebrafish development. It is thought that both Cyclins are necessary for a cell to progress past the G2/M checkpoint into mitosis. First, I show that zygotic Cyclin B1 is essential for normal cell cycle progression, but not for cells to enter mitosis. Lack of zygotic Cyclin B1 in the early arrest mutant specter, which carries a nonsense mutation in the cyclin B1 gene, …
Hedgehog Signaling (Hh/Gli) Regulates Neurogenesis In The Zebrafish Hypothalamus, Ira Male
Hedgehog Signaling (Hh/Gli) Regulates Neurogenesis In The Zebrafish Hypothalamus, Ira Male
Doctoral Dissertations
The hypothalamus is the central regulator of a diverse homeostatic processes that are essential for the survival of the animal. Recently, the hypothalamus has been shown to be a neurogenic zone in many animal species including mice, zebrafish, sheep and potentially even humans with hypothalamic neurogenesis implicated in energy metabolism, stress, anxiety and reproduction. However, the identification of the cellular components and the signaling mechanisms regulating hypothalamic neurogenesis are only beginning to be elucidated. My dissertation research elucidates the role of Hh signaling in regulating hypothalamic neurogenesis throughout life. The first chapter of the dissertation offers a survey into the …
Exploring The Role Of Ccdc141 In Zebrafish Heart Development, Luci Strong
Exploring The Role Of Ccdc141 In Zebrafish Heart Development, Luci Strong
Honors Theses
Zebrafish are a good model organism in which to identify genes important for heart development because most human genes have a zebrafish ortholog and genes in zebrafish are relatively simple to modify. ccdc141 is a gene with unknown function, which we originally found to be highly expressed in cardiac cells in mouse embryos. In this project, we are seeking to determine the function of ccdc141 using zebrafish. To perform this experiment, we are targeting ccdc141 for mutation using CRISPR/Cas9. In this project we have analyzed ccdc141 to determine regions of conservation, designed CRISPR guides to target those regions (exon 2 …
Elucidating The Functional Location Of Platelet-Derived Growth Factor Receptor Alpha, Creation Of A Review Chapter On The Use Of Zebrafish In Studying Congenital Heart Defects, And Using 3d Printing To Create Laboratory Tools, Jaret Lieberth
Honors Theses
Congenital heart defects (CHDs) are currently the most prevalent form of birth defect in the United States. Their combined frequency and severity make necessary a deeper understanding of the molecular underpinnings guiding heart formation. The first major step in cardiac morphogenesis, cardiac fusion, involves the medial movement of bilateral populations of myocardial precursor cells to the embryonic midline, where they merge to form the primitive heart tube. Although crucial to subsequent organogenesis, the precise mechanisms governing cardiac fusion remain unknown. Previous studies have found that a mutation in platelet-derived growth factor receptor alpha (pdgfra), called refuse-to-fuse (ref), results …