Project description:The single-cell RNA sequencing was focused on the suprafornical LHA and its surrounding areas. For single cell dissociation and collection, we used transgenic animal Agrp-IRES-Cre × Ai9 crosses, where the tdTomato-labeled AGRP neurons extend a prominent set of axonal projections to the suprafornical region of the LHA and provide a useful signal for visually guided dissection of the targeting brain region. Single-cell cDNA libraries were prepared using the Smart-SCRB chemistry.
Project description:Single nuclear RNA-sequencing from tissue dissected from the ventral medial preoptic area (VMPO) of the hypothalamus in saline and LPS injected mice
Project description:Leptin binding to the leptin receptor (LepR) causes rapid signaling to the nucleus. We investigated the early (2 hr) transcriptional response to acute leptin injectio (intracerebroventricular) in the preoptic area/hypothalamus/pituitary of juvenile Xenopus laevis frogs. Frogs were given i.c.v. injections of 0.6% saline or recombinant X. laevis leptin (rxLeptin; 20 ng/g BW) and 2 hrs later killed and the preoptic area/hypothalamus/pituitary dissected.
Project description:We employed a droplet-based single cell RNA-sequencing (scRNA-seq) approach to develop a comprehensive census of molecularly distinct cell types in the mouse lateral hypothalamic area (LHA). In addition to 13 distinct non-neuronal cell populations, we define 15 distinct populations of glutamatergic and 15 distinct populations of GABAergic neurons, including both known and novel cell types. This comprehensive transcriptomic analysis of LHA cell types lays the groundwork for understanding the circuit-level underpinnings of LHA coordination of innate behavior.
Project description:Alterations in metabolism, sleep patterns, body composition, and hormone status are all key features of aging. The hypothalamus is a well-conserved brain region that controls these homeostatic and survival-related behaviors. Despite the importance of this brain region in healthy aging, little is known about the intrinsic features of hypothalamic aging. Here, we utilize single nuclei RNA-sequencing to assess the transcriptomes of 40,064 hypothalamic nuclei from young and aged female mice. We identify cell type-specific signatures of aging in neurons, astrocytes, and microglia, as well as among the diverse collection of neuronal subtypes in this region. We uncover key changes in cell types critical for metabolic regulation and body composition, as well as in an area of the hypothalamus linked to cognition. In addition, our analysis reveals female-specific changes in sex chromosome regulation in the aging brain. This study identifies critical cell-specific features of the aging hypothalamus in mammals.
Project description:By comparing single cell transcriptomes of neurons participating in medial vs. lateral hippocampal networks in the mouse, we identify Latrophilin-2 as a molecular marker of the lateral network.
Project description:Single cell transcriptomic analysis of the lateral hypothalamic area reveals molecularly distinct populations of inhibitory and excitatory neurons
Project description:Leptin binding to the leptin receptor (LepR) causes rapid signaling to the nucleus. We investigated the early (2 hr) transcriptional response to acute leptin injectio (intracerebroventricular) in the preoptic area/hypothalamus/pituitary of juvenile Xenopus laevis frogs.