MERFISH Preoptic Region

Our exploratory effort develops novel and effective visualization tools using Altair to aid research investigation and hypothesis synthesis about social behaviours and their anatomical and genetic underpinnings, enabling succinct, reliable, and relevant exploratory data analysis (EDA) of the hypothalamic preoptic region data for enhanced understanding of neuronal diversity, sexual dimorphism, and social behaviors.

Moffitt & Bambah-Mukku et al. (2018) | Read the Paper | Dataset | Read our Final Report

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Vincy

Vincy View 1

01 – Spatial Mapping to Brain Atlas

Maps cells to a mouse brain atlas, revealing origins in ventral, bottom brain regions like Medial Preoptic Necleus (MPOC), medial part of Medial Preoptic (MPOM), and the Medial Preoptic Area (MPA), providing nuanced anatomical insights within the POA across behaviors and key social genes.

Additional Notes

This novel and perhaps unprecedented Altair-based genetic-level brain mapping enhances understanding of spatial organization.

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Vincy View 2

02 – Key Social Gene Expression Patterns

Explores expression of key social genes across anterior, middle, and posterior POA, with interactive co-expression analysis between gene pairs and animal identity details.

Additional Notes

Observes moderate correlation between Ar (testosterone) and Esr1 (estrogen), aiding hypothesis on neuromodulatory signatures as per the paper.

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Emily

Emily View 1

01 – Sex-Biased Cell Activation

Explores sex-biased cell activation (marked by Fos levels) across cell clusters and social behavioral conditions.

Additional Notes

Highlights differential activation in behaviors like parenting and aggression, revealing populations selectively activated in males vs. female mice.

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Emily View 2

02 – Sexually Dimorphic Cell Distribution

Examines sexually dimorphic patterns in spatial distribution and Bregma position, including interactions with behavioral conditions.

Additional Notes

Shows anterior-posterior variations and sex-behavior interactions, complementing the original authors's spatial mapping neuronal organizations in brain areas like the medial preoptic area (MPOA).

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Prateek

Prateek View 1

01 – Variance Explained by Sex vs. Individual Mice

Investigates the relationship between variance explained by sex and by individual experimental mice IDs, noting no clear pattern but some outliers suggesting potential positive associations.

Additional Notes

This analysis demands further nuance, aligning with the paper's emphasis on individual variability in neuromodulatory signatures across a subset of ~10,000 profiled cells.

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Prateek View 2

02 – Gene Expression Variability Between Sexes

Analyzes variability in gene expression between sexes, with Esr1 (female-dominated Estrogen gene) showing greater variability in males, and Avpr1a (male-specific Vasopressin gene) higher in males, implying behavioral-genetic interactions.

Additional Notes

Supports the original paper's insights into sex hormone signaling and neuromodulators like Vasopressin (Avp) in social behaviors.

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Alina

Alina View 1

01 – Distribution of Cell Classes

Explores the distribution of cell classes such as excitatory, inhibitory, and regulatory (glial) cells, and vascular cells.

Additional Notes

This dashboard provides an overview of cell class proportions, highlighting the prevalence of inhibitory neurons and excitatory neurons in the POA as identified in the dataset.

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Alina View 2

02 – Co-expression of Inhibitory Marker Gad1

Focuses on the co-expression patterns of the inhibitory genetic marker Gad1 with various other genes.

Additional Notes

Visualizes correlations and co-occurrence, noting Gad1's (primary inhibitory-signal gene marker) expression in many excitatory clusters, supporting the original paper's observation of hybrid neurons capable of inhibitory/excitatory signal corelease.

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