Irradiation with red light-emitting diode enhances proliferation and osteogenic differentiation of periodontal ligament stem cells

This study aimed to evaluate the effects of low-energy red light-emitting diode (LED) irradiation on the proliferation and osteogenic differentiation of periodontal ligament stem cells (PDLSCs). PDLSCs were derived from human periodontal ligament tissues of premolars and were irradiated with 0 (cont...

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Veröffentlicht in:Lasers in medical science 2021-09, Vol.36 (7), p.1535-1543
Hauptverfasser: Wu, Yan, Zhu, Tingting, Yang, Yaoyao, Gao, Hong, Shu, Chunxia, Chen, Qiang, Yang, Juan, Luo, Xiang, Wang, Yao
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container_issue 7
container_start_page 1535
container_title Lasers in medical science
container_volume 36
creator Wu, Yan
Zhu, Tingting
Yang, Yaoyao
Gao, Hong
Shu, Chunxia
Chen, Qiang
Yang, Juan
Luo, Xiang
Wang, Yao
description This study aimed to evaluate the effects of low-energy red light-emitting diode (LED) irradiation on the proliferation and osteogenic differentiation of periodontal ligament stem cells (PDLSCs). PDLSCs were derived from human periodontal ligament tissues of premolars and were irradiated with 0 (control group), 1, 3, or 5 J/cm 2 red LED in osteogenic induction medium. Cell proliferation was analyzed using the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. Osteogenic differentiation activity was evaluated by monitoring alkaline phosphatase (ALP) activity, alizarin red staining, and real-time polymerase chain reaction (RT-PCR) results. Osteoblast-associated proteins (Runx2, OCN, OPN, and BSP) were detected using western blotting. The results of the MTT assay indicated that PDLSCs in the irradiation groups exhibited a higher proliferation rate than those in the control group ( P < 0.05). ALP results showed that after 7 days of illumination, only 5 J/cm 2 promoted the expression of ALP of PDLSCs. However, after 14 days of illumination, the irradiation treatments did not increase ALP activity. The results of alizarin red staining showed that red LED promoted osteogenic differentiation of the PDLSCs. The real-time polymerase chain reaction (RT-PCR) results demonstrated that red LED upregulated the expression levels of osteogenic genes. Expression of the proteins BSP, OPN, OCN, and Runx2 in the irradiation groups was higher than that in the control group. Our results confirmed that low-energy red LED at 1, 3, and 5 J/cm 2 promotes proliferation and osteogenic differentiation of PDLSCs.
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PDLSCs were derived from human periodontal ligament tissues of premolars and were irradiated with 0 (control group), 1, 3, or 5 J/cm 2 red LED in osteogenic induction medium. Cell proliferation was analyzed using the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. Osteogenic differentiation activity was evaluated by monitoring alkaline phosphatase (ALP) activity, alizarin red staining, and real-time polymerase chain reaction (RT-PCR) results. Osteoblast-associated proteins (Runx2, OCN, OPN, and BSP) were detected using western blotting. The results of the MTT assay indicated that PDLSCs in the irradiation groups exhibited a higher proliferation rate than those in the control group ( P &lt; 0.05). ALP results showed that after 7 days of illumination, only 5 J/cm 2 promoted the expression of ALP of PDLSCs. However, after 14 days of illumination, the irradiation treatments did not increase ALP activity. The results of alizarin red staining showed that red LED promoted osteogenic differentiation of the PDLSCs. The real-time polymerase chain reaction (RT-PCR) results demonstrated that red LED upregulated the expression levels of osteogenic genes. Expression of the proteins BSP, OPN, OCN, and Runx2 in the irradiation groups was higher than that in the control group. Our results confirmed that low-energy red LED at 1, 3, and 5 J/cm 2 promotes proliferation and osteogenic differentiation of PDLSCs.</description><identifier>ISSN: 0268-8921</identifier><identifier>EISSN: 1435-604X</identifier><identifier>DOI: 10.1007/s10103-021-03278-1</identifier><identifier>PMID: 33719020</identifier><language>eng</language><publisher>London: Springer London</publisher><subject>Alizarin ; Alkaline phosphatase ; Biomedical materials ; Cbfa-1 protein ; Cell differentiation ; Cell proliferation ; Dentistry ; Differentiation (biology) ; Gene expression ; Illumination ; Irradiation ; Lasers ; Ligaments ; Light effects ; Light emitting diodes ; Medicine ; Medicine &amp; Public Health ; Mesenchymal stem cells ; Optical Devices ; Optics ; Original Article ; Periodontal ligament ; Photonics ; Polymerase chain reaction ; Premolars ; Proteins ; Quantum Optics ; Real time ; Staining ; Stem cells ; Western blotting</subject><ispartof>Lasers in medical science, 2021-09, Vol.36 (7), p.1535-1543</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2021</rights><rights>The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-36b55924c9f05b14e35ed000eba1a61c8bd5b58981e5207a67f1fee3b77606773</citedby><cites>FETCH-LOGICAL-c375t-36b55924c9f05b14e35ed000eba1a61c8bd5b58981e5207a67f1fee3b77606773</cites><orcidid>0000-0001-8400-1665</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10103-021-03278-1$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10103-021-03278-1$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33719020$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wu, Yan</creatorcontrib><creatorcontrib>Zhu, Tingting</creatorcontrib><creatorcontrib>Yang, Yaoyao</creatorcontrib><creatorcontrib>Gao, Hong</creatorcontrib><creatorcontrib>Shu, Chunxia</creatorcontrib><creatorcontrib>Chen, Qiang</creatorcontrib><creatorcontrib>Yang, Juan</creatorcontrib><creatorcontrib>Luo, Xiang</creatorcontrib><creatorcontrib>Wang, Yao</creatorcontrib><title>Irradiation with red light-emitting diode enhances proliferation and osteogenic differentiation of periodontal ligament stem cells</title><title>Lasers in medical science</title><addtitle>Lasers Med Sci</addtitle><addtitle>Lasers Med Sci</addtitle><description>This study aimed to evaluate the effects of low-energy red light-emitting diode (LED) irradiation on the proliferation and osteogenic differentiation of periodontal ligament stem cells (PDLSCs). PDLSCs were derived from human periodontal ligament tissues of premolars and were irradiated with 0 (control group), 1, 3, or 5 J/cm 2 red LED in osteogenic induction medium. Cell proliferation was analyzed using the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. Osteogenic differentiation activity was evaluated by monitoring alkaline phosphatase (ALP) activity, alizarin red staining, and real-time polymerase chain reaction (RT-PCR) results. Osteoblast-associated proteins (Runx2, OCN, OPN, and BSP) were detected using western blotting. The results of the MTT assay indicated that PDLSCs in the irradiation groups exhibited a higher proliferation rate than those in the control group ( P &lt; 0.05). ALP results showed that after 7 days of illumination, only 5 J/cm 2 promoted the expression of ALP of PDLSCs. However, after 14 days of illumination, the irradiation treatments did not increase ALP activity. The results of alizarin red staining showed that red LED promoted osteogenic differentiation of the PDLSCs. The real-time polymerase chain reaction (RT-PCR) results demonstrated that red LED upregulated the expression levels of osteogenic genes. Expression of the proteins BSP, OPN, OCN, and Runx2 in the irradiation groups was higher than that in the control group. 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PDLSCs were derived from human periodontal ligament tissues of premolars and were irradiated with 0 (control group), 1, 3, or 5 J/cm 2 red LED in osteogenic induction medium. Cell proliferation was analyzed using the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. Osteogenic differentiation activity was evaluated by monitoring alkaline phosphatase (ALP) activity, alizarin red staining, and real-time polymerase chain reaction (RT-PCR) results. Osteoblast-associated proteins (Runx2, OCN, OPN, and BSP) were detected using western blotting. The results of the MTT assay indicated that PDLSCs in the irradiation groups exhibited a higher proliferation rate than those in the control group ( P &lt; 0.05). ALP results showed that after 7 days of illumination, only 5 J/cm 2 promoted the expression of ALP of PDLSCs. However, after 14 days of illumination, the irradiation treatments did not increase ALP activity. The results of alizarin red staining showed that red LED promoted osteogenic differentiation of the PDLSCs. The real-time polymerase chain reaction (RT-PCR) results demonstrated that red LED upregulated the expression levels of osteogenic genes. Expression of the proteins BSP, OPN, OCN, and Runx2 in the irradiation groups was higher than that in the control group. Our results confirmed that low-energy red LED at 1, 3, and 5 J/cm 2 promotes proliferation and osteogenic differentiation of PDLSCs.</abstract><cop>London</cop><pub>Springer London</pub><pmid>33719020</pmid><doi>10.1007/s10103-021-03278-1</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-8400-1665</orcidid></addata></record>
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subjects Alizarin
Alkaline phosphatase
Biomedical materials
Cbfa-1 protein
Cell differentiation
Cell proliferation
Dentistry
Differentiation (biology)
Gene expression
Illumination
Irradiation
Lasers
Ligaments
Light effects
Light emitting diodes
Medicine
Medicine & Public Health
Mesenchymal stem cells
Optical Devices
Optics
Original Article
Periodontal ligament
Photonics
Polymerase chain reaction
Premolars
Proteins
Quantum Optics
Real time
Staining
Stem cells
Western blotting
title Irradiation with red light-emitting diode enhances proliferation and osteogenic differentiation of periodontal ligament stem cells
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