The hypothalamus comprises neuronal clusters that are essential for body weight regulation and other physiological functions. Insights into the complex cellular physiology of this region of the brain are critical to understanding the pathogenesis of obesity, but human hypothalamic cells are largely inaccessible for direct study. Here we describe a technique for generation of arcuate-like hypothalamic neurons from human pluripotent stem (hPS) cells. Early activation of SHH signaling and inhibition of BMP and TGFβ signaling, followed by timed inhibition of NOTCH, can efficiently differentiate hPS cells into NKX2.1+ hypothalamic progenitors. Subsequent incubation with BDNF induces the differentiation and maturation of pro-opiomelanocortin and neuropeptide Y neurons, which are major cell types in the arcuate hypothalamus. These neurons have molecular and cellular characteristics consistent with arcuate neurons. © 2016 by John Wiley & Sons, Inc.
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http://dx.doi.org/10.1002/cphg.3 | DOI Listing |
Reproduction
January 2025
X Ye, Department of Physiology and Pharmacology, University of Georgia, Athens, United States.
Wnt7a-Cre is a commonly used for generating uterine epithelial conditional knockout mice, such as epiERα-/- (Esr1f/-Wnt7aCre/+) and epiPR-/- (Pgrf/-Wnt7aCre/+). We noticed that epiERα-/- females, but not epiPR-/- females, have prolonged plugging latency, which is the duration between continuous cohabitation and detection of the first vaginal plug (a sign of mating). Mating occurs in proestrus and/or estrus stages of the estrous cycle.
View Article and Find Full Text PDFUnlabelled: Motivated behaviors are regulated by distributed forebrain networks. Traditional approaches have often focused on individual brain regions and connections that do not capture the topographic organization of forebrain connectivity. We performed co-injections of anterograde and retrograde tract tracers in rats to provide novel high-spatial resolution evidence of topographic connections that elaborate a previously identified closed-loop forebrain circuit implicated in affective and motivational processes.
View Article and Find Full Text PDFEndocrinology
January 2025
Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, OR, USA.
Hypothalamic kisspeptin (Kiss1) neurons are vital for maintaining fertility in the mammal. In the female rodent, Kiss1 neurons populate the anteroventral periventricular/periventricular nuclei (Kiss1AVPV/PeN) and the arcuate nucleus (Kiss1ARH). Kiss1ARH neurons (a.
View Article and Find Full Text PDFVitam Horm
January 2025
Lilly Diabetes Research Center, Indiana Biosciences Research Institute, Indianapolis, IN, United States; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States. Electronic address:
The hypothalamus plays a central role in regulating energy expenditure and maintaining energy homeostasis, crucial for an organism's survival. Located in the ventral diencephalon, it is a dynamic and adaptable brain region capable of rapid responses to environmental changes, exhibiting high anatomical and cellular plasticity and integrates a myriad of sensory information, internal physiological cues, and humoral factors to accurately interpret the nutritional state and adjust food intake, thermogenesis, and energy homeostasis. Key hypothalamic nuclei contain distinct neuron populations that respond to hormonal, nutrient, and neural inputs and communicate extensively with peripheral organs like the gastrointestinal tract, liver, pancreas, and adipose tissues to regulate energy production, storage, mobilization, and utilization.
View Article and Find Full Text PDFVitam Horm
January 2025
Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, OR, United States. Electronic address:
The balance between food intake and energy expenditure is precisely regulated to maintain adipose stores. Leptin, which is produced in and released from adipose in direct proportion to its size, is a major contributor to this control and initiates its homeostatic responses largely via binding to leptin receptors (LepR) in the hypothalamus. Decreases in hypothalamic LepR binding signals starvation, leading to hunger and reduced energy expenditure, whereas increases in hypothalamic LepR binding can suppress food intake and increase energy expenditure.
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