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Differentiation of hypothalamic-like neurons from human pluripotent stem cells
Liheng Wang, … , Dieter Egli, Rudolph L. Leibel
Liheng Wang, … , Dieter Egli, Rudolph L. Leibel
Published February 2, 2015; First published January 2, 2015
Citation Information: J Clin Invest. 2015;125(2):796-808. https://doi.org/10.1172/JCI79220.
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Categories: Technical Advance Stem cells

Differentiation of hypothalamic-like neurons from human pluripotent stem cells

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Abstract

The hypothalamus is the central regulator of systemic energy homeostasis, and its dysfunction can result in extreme body weight alterations. Insights into the complex cellular physiology of this region are critical to the understanding of obesity pathogenesis; however, human hypothalamic cells are largely inaccessible for direct study. Here, we developed a protocol for efficient generation of hypothalamic neurons from human embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) obtained from patients with monogenetic forms of obesity. Combined early activation of sonic hedgehog signaling followed by timed NOTCH inhibition in human ESCs/iPSCs resulted in efficient conversion into hypothalamic NKX2.1+ precursors. Application of a NOTCH inhibitor and brain-derived neurotrophic factor (BDNF) further directed the cells into arcuate nucleus hypothalamic-like neurons that express hypothalamic neuron markers proopiomelanocortin (POMC), neuropeptide Y (NPY), agouti-related peptide (AGRP), somatostatin, and dopamine. These hypothalamic-like neurons accounted for over 90% of differentiated cells and exhibited transcriptional profiles defined by a hypothalamic-specific gene expression signature that lacked pituitary markers. Importantly, these cells displayed hypothalamic neuron characteristics, including production and secretion of neuropeptides and increased p-AKT and p-STAT3 in response to insulin and leptin. Our results suggest that these hypothalamic-like neurons have potential for further investigation of the neurophysiology of body weight regulation and evaluation of therapeutic targets for obesity.

Authors

Liheng Wang, Kana Meece, Damian J. Williams, Kinyui Alice Lo, Matthew Zimmer, Garrett Heinrich, Jayne Martin Carli, Charles A. Leduc, Lei Sun, Lori M. Zeltser, Matthew Freeby, Robin Goland, Stephen H. Tsang, Sharon L. Wardlaw, Dieter Egli, Rudolph L. Leibel

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Figure 1

Early activation of SHH signaling and subsequent inhibition of NOTCH signaling induces hypothalamic NKX2.1+ progenitors.

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Early activation of SHH signaling and subsequent inhibition of NOTCH sig...
(A) Schematic of the differentiation protocol for the generation of hypothalamic progenitors from hESCs/iPSCs. KSR, knockout serum replacement. (B) Immunocytochemical staining of NKX2.1 and FOXG1 in day-12 differentiated cells. Scale bars: 200 μm. (C) qPCR analysis of indicated TFs on day 1, day 4, day 8, and day 12 of differentiation. n = 3 for each bar. TBP, TATA box–binding protein. (D) Immunostaining for PAX6, MASH1, and NKX2.1 on days 4, 8, and 12 of differentiation. Nuclei were stained with Hoechst. (E) Western blot analysis for indicated TFs in hESCs after 4, 8, and 12 days of differentiation. Arrow indicates the PAX6 band.
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