Author Type

Undergraduate Student

Date of Award

Spring 5-2025

Document Type

Thesis

Publication Status

Version of Record

Submission Date

November 2026

College Granting Degree

Harriet L. Wilkes Honors College

Thesis/Dissertation Advisor [Chair]

Samantha McGovern

Abstract

The pro-inflammatory cytokine interleukin-1 (IL-1) has diverse functions within the brain such as facilitating memory and regulating sleep, yet is linked to various psychopathological disorders including depression, anxiety, and PTSD. The IL-1 type 1 receptor (IL-1R1) is the sole receptor of IL-1 and is predominantly expressed on non-neuronal cell types in the brain; however, the existence of IL-1R1 on neurons has been debated due to inconsistent mapping attempts. Here, we generated a specific atlas of neuronal IL-1R1 (nIL-1R1) distribution throughout the brain in global and glutamatergic-neuron-specific IL-1R1 reporter mice. Using immunohistochemical labeling and the QUINT workflow, we show nIL-1R1 is primarily found in brain regions related to sensory processes. Further, we directly stimulated nIL-1R1 with intracerebroventricular IL-1 injections to investigate the receptor’s activity. Our results expand the knowledge on the cytoarchitecture of brain nIL-1R1 and kinetics of the receptor’s responsiveness, which could be crucial for understanding IL-mediated neuroinflammatory disorders.

Format

pdf

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