Cited by 32Ion Channels and ReceptorsCell death mechanisms and regulationCalcium signaling and nucleotide metabolism

Steroid hormone 20-hydroxyecdysone promotes higher calcium mobilization to induce apoptosis

Wang, Di, Pei, Xu-Yang, Zhao, Wen-Li, Zhao, Xiao-Fan·2016·Cell Calcium

Abstract

Calcium ions are essential secondary messengers that regulate diverse cellular processes including gene transcription, cell proliferation, and apoptosis. The steroid hormone 20-hydroxyecdysone (20E) promotes programmed cell death during insect metamorphosis, whereas juvenile hormone (JH) counteracts 20E activity to prevent metamorphosis. Both 20E and JH can induce cellular calcium increase; however, the mechanisms and physiological consequences resulting from calcium increase caused by the two counteracting hormones are unclear. Here, using Helicoverpa armigera epidermal cell line, we show that 20E via a G-protein-coupled receptor induced a major calcium rise in the cells, whereas JH via receptor tyrosine kinase induced a minor calcium increase. The calcium release-activated calcium modulator 1 (Orai1) and transient receptor potential (TRP) channels were necessary for 20E-induced rapid calcium influx. A higher calcium level was maintained in a long time and more genes including Orai1 and TRP channels showed elevated expression after the treatment of 20E than did after JH treatment. Caspase3/7 activation, cell death and pro-apoptotic gene expression were elicited by 20E induction, but not by JH. JH could repress 20E-induced calcium influx, caspase3/7 activation and gene expression. Higher calcium levels induced apoptosis. These results suggest that 20E and JH via different pathways regulate calcium mobilization and homeostasis at different levels, thus inform different gene expression and cellular responses.

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Crossref · 10.1016/j.ceca.2016.05.003

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Authors
Wang, D., Pei, X.-Y., Zhao, W.-L., & Zhao, X.-F.
Affiliations
Shandong University (CN)
Corresponding author
Zhao, Xiao-Fan
Venue
Cell Calcium
Publisher
Elsevier BV
Published
2016-07
Volume
60
Issue
1
Pages
1-12
ISSN
0143-4160 (ISSN-L)
OpenAlex
W2376719925
Cited by
32
References
59
Citations by year
2025: 3 · 2024: 4 · 2023: 4 · 2022: 3 · 2021: 5 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 2 · 2016: 2
FWCI
2.46
Type
journal article
Language
en
Open access
closed
Locations
  • Cell Calcium (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (31572328, 31230067)
Topics
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
20-hydroxyecdysone, juvenile hormone, calcium mobilization, apoptosis, insect metamorphosis, G protein-coupled receptors, receptor tyrosine kinase, Orai1, TRP channels, calcium influx, caspase-3/7 activation, Helicoverpa armigera, epidermal cells, calcium homeostasis
MeSH terms
Stromal Interaction Molecule 1, ORAI1 Protein, Animals, Calcium, Cell Line, Cytosol, Ecdysterone, Flow Cytometry, Homeostasis, Juvenile Hormones, Moths, Protein-Tyrosine Kinases, Calcium Channels, Apoptosis, Receptors, G-Protein-Coupled, Transient Receptor Potential Channels, Caspase 3, Caspase 7

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