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Full-Text Articles in Cell and Developmental Biology

Arid1a Haploinsufficiency Initiates Neural Crest Transformation In A Mouse Model Of Mycn-Driven Neuroblastoma, Kirby A. Wallace Apr 2020

Arid1a Haploinsufficiency Initiates Neural Crest Transformation In A Mouse Model Of Mycn-Driven Neuroblastoma, Kirby A. Wallace

Theses and Dissertations (ETD)

Mouse models of cancer are critical for developing therapeutic treatments for pediatric patients. Recent sequencing studies of neuroblastoma (NBL) patient tumors have uncovered precise deletions in the chromatin remodeler and tumor suppressor gene (TSG) ARID1A. Additional causal studies supported ARID1A’s candidacy as a putative 1p36 TSG in MYCN-driven NBL. This study aimed to causally test Arid1a loss during Mycn-driven NBL initiation through the development of a mouse model of high risk NBL.In this study, we modified a Mycn-driven mouse model of NBL to incorporate Cre mediated deletion of floxed Arid1a. Briefly, in freshly isolated embryonic day 9.5 primary trunk neural …


A Micro-Optic Stalk (Muos) System To Model The Collective Migration Of Retinal Neuroblasts, Stephanie Zhang, Miles Markey, Caroline D. Pena, Tadmiri Venkatesh, Maribel Vasquez Mar 2020

A Micro-Optic Stalk (Muos) System To Model The Collective Migration Of Retinal Neuroblasts, Stephanie Zhang, Miles Markey, Caroline D. Pena, Tadmiri Venkatesh, Maribel Vasquez

Publications and Research

Contemporary regenerative therapies have introduced stem-like cells to replace damaged neurons in the visual system by recapitulating critical processes of eye development. The collective migration of neural stem cells is fundamental to retinogenesis and has been exceptionally well-studied using the fruit fly model of Drosophila Melanogaster. However, the migratory behavior of its retinal neuroblasts (RNBs) has been surprisingly understudied, despite being critical to retinal development in this invertebrate model. The current project developed a new microfluidic system to examine the collective migration of RNBs extracted from the developing visual system of Drosophila as a model for the collective motile processes …


Characterizing Changes In The Colonic Epithelium Of Lrig3 Null Mice, Natalie Pedicino Jan 2020

Characterizing Changes In The Colonic Epithelium Of Lrig3 Null Mice, Natalie Pedicino

Scripps Senior Theses

The lining of the colon, or colonic epithelium, is a very dynamic and highly regulated tissue in the human body. Colonic stem cells are a key component of this tissue, and they make up the stem cell niche, which is found at the base of the colonic crypt. Regeneration of the colonic epithelium, which occurs on a weekly basis, is a complex process, and proteins responsible for directing regeneration are still being discovered. Two critical regulatory proteins, Lrig1 and Lrig3, have been shown to modulate the EGFR pathway, a key signaling pathway for growth, differentiation, and regeneration. Data from the …