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Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology 9/2023

19.04.2023 | Basic Science

Photobiomodulation at 660 nm promotes collagen synthesis via downregulation of HIF-1α expression without photodamage in human scleral fibroblasts in vitro in a hypoxic environment

verfasst von: Pengbo Zhang, Xibo Zhang, Huang Zhu

Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology | Ausgabe 9/2023

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Abstract

Purpose

The increasing prevalence of myopia is a global public health issue. Because of the complexity of myopia pathogenesis, current control methods for myopia have great limitations. The aim of this study was to explore the effect of photobiomodulation (PBM) on human sclera fibroblasts (HSFs) under hypoxia, in the hope of providing new ideas for myopia prevention and control.

Methods

Hypoxic cell model was established at 0, 6, 12, and 24 h time points to simulate myopia microenvironment and explore the optimal time point. Control, hypoxia, hypoxia plus light, and normal plus light cell models were set up for the experiments, and cells were incubated for 24 or 48 h after PBM (660 nm, 5 J/cm2), followed by evaluation of hypoxia-inducible factor 1α (HIF-1α) and collagen I a1 (COL1A1) proteins using Western blotting and immunofluorescence, and photo damage was detected by CCK-8, scratch test, and flow cytometry assays. We also used transfection technology to further elucidate the regulatory mechanism.

Results

The change of target proteins is most obvious when hypoxia lasts for 24 h (p < 0.01). PBM at 660 nm increased extracellular collagen content (p < 0.001) and downregulated expression of HIF-1α (p < 0.05). This treatment did not affect the migration and proliferation of cells (p > 0.05), and effectively inhibited apoptosis under hypoxia (p < 0.0001). After overexpression of HIF-1α, the effect of PBM was attenuated (p > 0.05).

Conclusions

Photobiomodulation at 660 nm promotes collagen synthesis via downregulation of HIF-1α expression without photodamage.
Literatur
5.
Zurück zum Zitat Mester E, Szende B, Gärtner P (1968) The effect of laser beams on the growth of hair in mice. Radiobiol Radiother (Berl) 9:621–626PubMed Mester E, Szende B, Gärtner P (1968) The effect of laser beams on the growth of hair in mice. Radiobiol Radiother (Berl) 9:621–626PubMed
27.
Zurück zum Zitat McBrien NA, Cornell LM, Gentle A (2001) Structural and ultrastructural changes to the sclera in a mammalian model of high myopia. Invest Ophthalmol Vis Sci 42:2179–2187PubMed McBrien NA, Cornell LM, Gentle A (2001) Structural and ultrastructural changes to the sclera in a mammalian model of high myopia. Invest Ophthalmol Vis Sci 42:2179–2187PubMed
29.
Zurück zum Zitat Hopkins JT, McLoda TA, Seegmiller JG, David Baxter G (2004) Low-level laser therapy facilitates superficial wound healing in humans: a triple-blind, sham-controlled study. J Athl Train 39:223–229PubMedPubMedCentral Hopkins JT, McLoda TA, Seegmiller JG, David Baxter G (2004) Low-level laser therapy facilitates superficial wound healing in humans: a triple-blind, sham-controlled study. J Athl Train 39:223–229PubMedPubMedCentral
42.
44.
Zurück zum Zitat Rhee YH, Moon JH, Choi SH, Ahn JC (2016) Low-level laser therapy promoted aggressive proliferation and angiogenesis through decreasing of transforming growth factor-β1 and increasing of akt/hypoxia inducible factor-1α in anaplastic thyroid cancer. Photomed Laser Surg 34:229–35. https://doi.org/10.1089/pho.2015.3968 Rhee YH, Moon JH, Choi SH, Ahn JC (2016) Low-level laser therapy promoted aggressive proliferation and angiogenesis through decreasing of transforming growth factor-β1 and increasing of akt/hypoxia inducible factor-1α in anaplastic thyroid cancer. Photomed Laser Surg 34:229–35. https://​doi.​org/​10.​1089/​pho.​2015.​3968
47.
Zurück zum Zitat Hsieh Y-L, Chou L-W, Chang P-L, Yang C-C, Kao M-J, Hong C-Z (2012) Low-level laser therapy alleviates neuropathic pain and promotes function recovery in rats with chronic constriction injury: possible involvements in hypoxia-inducible factor 1α (HIF-1α). J Comp Neurol 520:2903–2916. https://doi.org/10.1002/cne.23072CrossRefPubMed Hsieh Y-L, Chou L-W, Chang P-L, Yang C-C, Kao M-J, Hong C-Z (2012) Low-level laser therapy alleviates neuropathic pain and promotes function recovery in rats with chronic constriction injury: possible involvements in hypoxia-inducible factor 1α (HIF-1α). J Comp Neurol 520:2903–2916. https://​doi.​org/​10.​1002/​cne.​23072CrossRefPubMed
Metadaten
Titel
Photobiomodulation at 660 nm promotes collagen synthesis via downregulation of HIF-1α expression without photodamage in human scleral fibroblasts in vitro in a hypoxic environment
verfasst von
Pengbo Zhang
Xibo Zhang
Huang Zhu
Publikationsdatum
19.04.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Graefe's Archive for Clinical and Experimental Ophthalmology / Ausgabe 9/2023
Print ISSN: 0721-832X
Elektronische ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-023-06066-5

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