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Cell and Molecular Biology

Zebrafish Cutaneous Injury Models Reveal That Langerhans Cells Engulf Axonal Debris in Adult Epidermis

Peterman E, Quitevis EJA, Black EC, Horton EC, Aelmore RL, White E, Sagasti A, Rasmussen JP.  2023.  Zebrafish Cutaneous Injury Models Reveal That Langerhans Cells Engulf Axonal Debris in Adult Epidermis. Disease Models & Mechanisms. 16:dmm049911.

Belong, Achieve, Mentor: lessons from the BioCORE Scholars Program

Using an algorithm incorporating high school GPA and SAT scores, we can predict a student’s GPA in biology at the end of SPU’s introductory undergraduate sequence. A disproportionate number of underrepresented students, however, are predicted to have lower grades. This finding instigated the development of the BioCORE Scholars Program in 2015. Its interventions include study cohorts, peer mentors, community role models, and research participation.

A tale of two toxins: The acquisition of defensive toxins by animals through horizontal gene transfer

Several disease-causing bacteria produce toxins that damage host cells by triggering preprogrammed cell death. Two such bacterial toxins are called cytolethal distending toxin B and apoptosis-inducing protein of 56 kDa. We discovered that diverse insect species co-opted the two bacterial genes encoding each cytotoxin through a phenomenon called horizontal gene transfer (HGT). HGT occurs when a gene from one organism is inserted into the genome of another and then is stably inherited across generations.

Dynamic Regulation of cell adhesion and motility governs the formation of the embryonic axis in vertebrate embryos

How do vertebrate embryos develop to form the adult organism? Coordinated cell movements during gastrulation are key to laying down the early embryonic body plan. The cells migrate by two distinct mechanisms that I will describe. They can migrate on extracellular matrix or on their neighboring cells. In zebrafish embryos, endoderm cells migrate on the yolk extracellular matrix to form the organs of the gut.

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