Repair effect of photobiomodulation combined with human umbilical cord mesenchymal stem cells on rats with acute lung injury

ElsevierVolume 234, September 2022, 112541Journal of Photochemistry and Photobiology B: BiologyHighlights•

Acute lung injury (ALI) impaired the function of blood oxygen exchange function.

Human umbilical cord mesenchymal stem cells (hUCMSCs) are recognized for attenuating ALI.

HUCMSCs face various limitations such as migrating weakly and insufficient proliferation in vivo.

PBM enhanced the antioxidant capacity of cells and improved cell survival.

PBM further strengthens the therapeutic effect of hUCMSCs and depicted a hopeful therapy in ALI treatment.

Abstract

Acute lung injury (ALI) impaired the function of blood oxygen exchange function, resulting in tissue hypoxia and patient death. Recently, human umbilical cord mesenchymal stem cells (hUCMSCs) are thought to mitigate the effects of ALI, which boosts researchers' interest in employing stem cell-based therapies to manage ALI. However, as a novel therapy, hUCMSCs still face various limitations such as migrating weakly and insufficient proliferation in vivo. Photobiomodulation (PBM) effciently promotes cell proliferation, migration and homing, which presents a promising strategy for overcoming above limitations. In this study, PBM was emerged to intervene hUCMSCs through detecting cell proliferation, oxidative stress-related factors and inflammatory factors. These results assuredly confirmed that PBM enhanced the antioxidant capacity of cells and improved cell survival in vitro experiments. In vivo, PBM-intervened hUCMSCs intuitively reduce thickness of alveolar septum, excessive secretion of inflammatory factors, relieves bleeding, edema and fibrosis. As a physical intervention, PBM further strengthens the therapeutic effect of hUCMSCs and depicted a hopeful therapy in ALI treatment.

Keywords

Photobiomodulation (PBM)

Human umbilical cord mesenchymal stem cells (hUCMSCs)

Oxidative

Acute lung injury (ALI)

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