Cell micropatterning reveals the modulatory effect of cell shape on proliferation through intracellular calcium transients
Copyright © 2017 Elsevier B.V. All rights reserved..
The mechanism by which cell shape regulates the function of the cell is one of the most important biological issues, but it remains unclear. Here, we investigated the effect of the regulation of cell shape on proliferation by using a micropatterning approach to confine MC3T3-E1 cells into specific shapes. Our results show that the proliferation rate for rectangle-, triangle-, square- and circle-shaped osteoblasts increased sequentially and was related to the nuclear shape index (NSI) but not the cell shape index (CSI). Interestingly, intracellular calcium transients also displayed different patterns, with the number of Ca2+ peaks increasing with the NSI in shaped cells. Further causal investigation revealed that the gene expression levels of the inositol 1,4,5-triphosphate receptor 1 (IP3R1) and sarco/endoplasmic reticulum Ca2+-ATPase 2 (SERCA2), two major calcium cycling proteins in the endoplasmic reticulum (ER), were increased with an increase in NSI as a result of nuclear volume changes. Moreover, the down-regulation of IP3R1 and/or SERCA2 using shRNAs in circle-shaped or control osteoblasts resulted in changes in intracellular calcium transient patterns and cell proliferation rates towards that of smaller-NSI-shaped cells. Our results indicate that changes in cell shape changed nuclear morphology and then the gene expression of IP3R1 and SERCA2, which produced different intracellular calcium transient patterns. The patterns of intracellular calcium transients then determined the proliferation rate of the shaped osteoblasts.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:1864 |
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| Enthalten in: |
Biochimica et biophysica acta. Molecular cell research - 1864(2017), 12 vom: 15. Dez., Seite 2389-2401 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Tong, Jie [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 08.02.2018 Date Revised 12.04.2019 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.bbamcr.2017.09.015 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 245 | 1 | 0 | |a Cell micropatterning reveals the modulatory effect of cell shape on proliferation through intracellular calcium transients |
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| 520 | |a Copyright © 2017 Elsevier B.V. All rights reserved. | ||
| 520 | |a The mechanism by which cell shape regulates the function of the cell is one of the most important biological issues, but it remains unclear. Here, we investigated the effect of the regulation of cell shape on proliferation by using a micropatterning approach to confine MC3T3-E1 cells into specific shapes. Our results show that the proliferation rate for rectangle-, triangle-, square- and circle-shaped osteoblasts increased sequentially and was related to the nuclear shape index (NSI) but not the cell shape index (CSI). Interestingly, intracellular calcium transients also displayed different patterns, with the number of Ca2+ peaks increasing with the NSI in shaped cells. Further causal investigation revealed that the gene expression levels of the inositol 1,4,5-triphosphate receptor 1 (IP3R1) and sarco/endoplasmic reticulum Ca2+-ATPase 2 (SERCA2), two major calcium cycling proteins in the endoplasmic reticulum (ER), were increased with an increase in NSI as a result of nuclear volume changes. Moreover, the down-regulation of IP3R1 and/or SERCA2 using shRNAs in circle-shaped or control osteoblasts resulted in changes in intracellular calcium transient patterns and cell proliferation rates towards that of smaller-NSI-shaped cells. Our results indicate that changes in cell shape changed nuclear morphology and then the gene expression of IP3R1 and SERCA2, which produced different intracellular calcium transient patterns. The patterns of intracellular calcium transients then determined the proliferation rate of the shaped osteoblasts | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Calcium transient | |
| 650 | 4 | |a ER | |
| 650 | 4 | |a Micropatterning | |
| 650 | 4 | |a Nuclear shape index | |
| 650 | 4 | |a Shape | |
| 650 | 7 | |a Inositol 1,4,5-Trisphosphate Receptors |2 NLM | |
| 650 | 7 | |a Ip3r2 protein, mouse |2 NLM | |
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| 650 | 7 | |a Atp2a2 protein, mouse |2 NLM | |
| 650 | 7 | |a EC 7.2.2.10 |2 NLM | |
| 650 | 7 | |a Calcium |2 NLM | |
| 650 | 7 | |a SY7Q814VUP |2 NLM | |
| 700 | 1 | |a Qi, Ying |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xiangmiao |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Liyin |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Chang |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Wenjun |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Jianbao |e verfasserin |4 aut | |
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