Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA350285 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Photobiomodulation by blue light induces a dose dependent biphasic proliferation curve in human keratinocytes
| PRJNA350268 | ENA
Project description:Photobiomodulation by blue light induces a dose dependent biphasic proliferation curve in human keratinocytes [exp1]
| PRJNA350287 | ENA
Project description:Photobiomodulation by blue light induces a dose dependent biphasic proliferation curve in human keratinocytes [exp2]
| PRJNA350286 | ENA
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum anti-proliferative effect reached with 30min (41.4J/cm²). The aim of this study was to test the photobiomodulatory effect of 41.4J/cm2 blue light irradiation on ROS production, apoptosis and gene expression at different time points after irradiation of HaCaT cells in vitro. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to reduce ROS and balance the concentration to a normal level. The sudden increase in ROS did not damage the cells, which was demonstrated with FACS analysis where HaCaT cells did not show any sign of apoptosis after blue light irradiation. Furthermore, a time course could be seen in gene expression analysis after blue light, with an early response of stimulated genes already 1h after blue light irradiation, leading to the discovery of the aryl hydrocarbon receptor as possible target for blue light irradiation.
2016-10-19 | GSE82093 | GEO
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum anti-proliferative effect reached with 30min (41.4J/cm²). The aim of this study was to test the photobiomodulatory effect of 41.4J/cm2 blue light irradiation on ROS production, apoptosis and gene expression at different time points after irradiation of HaCaT cells in vitro. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to reduce ROS and balance the concentration to a normal level. The sudden increase in ROS did not damage the cells, which was demonstrated with FACS analysis where HaCaT cells did not show any sign of apoptosis after blue light irradiation. Furthermore, a time course could be seen in gene expression analysis after blue light, with an early response of stimulated genes already 1h after blue light irradiation, leading to the discovery of the aryl hydrocarbon receptor as possible target for blue light irradiation.
2016-10-19 | GSE82092 | GEO
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum anti-proliferative effect reached with 30min (41.4J/cm²). The aim of this study was to test the photobiomodulatory effect of 41.4J/cm2 blue light irradiation on ROS production, apoptosis and gene expression at different time points after irradiation of HaCaT cells in vitro. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to reduce ROS and balance the concentration to a normal level. The sudden increase in ROS did not damage the cells, which was demonstrated with FACS analysis where HaCaT cells did not show any sign of apoptosis after blue light irradiation. Furthermore, a time course could be seen in gene expression analysis after blue light, with an early response of stimulated genes already 1h after blue light irradiation, leading to the discovery of the aryl hydrocarbon receptor as possible target for blue light irradiation.
2016-10-19 | GSE82080 | GEO
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum proliferative effect reached with 7.5min (10.35J/cm2). The aim of this study was to test the photobiomodulatory effect of 10.35J/cm2 blue light irradiation on cell proliferation, ROS production and gene expression at different time points after irradiation of HaCaT cells in vitro and to compare the results with the anti-proliferative phase of PBM using blue light with 41.4J/cm2. For 10.35J/cm2 cell proliferation was increased for all measured harvesting time points up to at least 24h after irradiation. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to decrease ROS and stabilize the concentration to the basal level. The sudden increase in ROS was even higher when compared to 41.4J/cm2. However, gene expression analysis did not indicate any sign of apoptosis and even indicated an activation of cell survival mechanisms. Furthermore, comparable to 41.4J/cm2, aryl hydrocarbon receptor (AHR) “battery genes” showed a deregulation after blue light irradiation strengthening the hypothesis of AHR as possible target for blue light irradiation.
2019-10-01 | GSE89085 | GEO
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum proliferative effect reached with 7.5min (10.35J/cm2). The aim of this study was to test the photobiomodulatory effect of 10.35J/cm2 blue light irradiation on cell proliferation, ROS production and gene expression at different time points after irradiation of HaCaT cells in vitro and to compare the results with the anti-proliferative phase of PBM using blue light with 41.4J/cm2. For 10.35J/cm2 cell proliferation was increased for all measured harvesting time points up to at least 24h after irradiation. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to decrease ROS and stabilize the concentration to the basal level. The sudden increase in ROS was even higher when compared to 41.4J/cm2. However, gene expression analysis did not indicate any sign of apoptosis and even indicated an activation of cell survival mechanisms. Furthermore, comparable to 41.4J/cm2, aryl hydrocarbon receptor (AHR) “battery genes” showed a deregulation after blue light irradiation strengthening the hypothesis of AHR as possible target for blue light irradiation.
2019-10-01 | GSE89084 | GEO
Project description:Photobiomodulation (PBM) with blue light induces a biphasic dose response curve in proliferation of immortalized human keratinocytes (HaCaT), with a maximum proliferative effect reached with 7.5min (10.35J/cm2). The aim of this study was to test the photobiomodulatory effect of 10.35J/cm2 blue light irradiation on cell proliferation, ROS production and gene expression at different time points after irradiation of HaCaT cells in vitro and to compare the results with the anti-proliferative phase of PBM using blue light with 41.4J/cm2. For 10.35J/cm2 cell proliferation was increased for all measured harvesting time points up to at least 24h after irradiation. ROS concentration was increased 30min after irradiation. However, already 1h after irradiation, cells were able to decrease ROS and stabilize the concentration to the basal level. The sudden increase in ROS was even higher when compared to 41.4J/cm2. However, gene expression analysis did not indicate any sign of apoptosis and even indicated an activation of cell survival mechanisms. Furthermore, comparable to 41.4J/cm2, aryl hydrocarbon receptor (AHR) “battery genes” showed a deregulation after blue light irradiation strengthening the hypothesis of AHR as possible target for blue light irradiation.
2019-10-01 | GSE89083 | GEO
Project description:FelixGarza2017 - Blue Light Treatment of
Psoriasis (simplified)
This model is described in the article:
A Dynamic Model for
Prediction of Psoriasis Management by Blue Light
Irradiation.
Félix Garza ZC, Liebmann J,
Born M, Hilbers PA, van Riel NA.
Front Physiol 2017; 8: 28
Abstract:
Clinical investigations prove that blue light irradiation
reduces the severity of psoriasis vulgaris. Nevertheless, the
mechanisms involved in the management of this condition remain
poorly defined. Despite the encouraging results of the clinical
studies, no clear guidelines are specified in the literature
for the irradiation scheme regime of blue light-based therapy
for psoriasis. We investigated the underlying mechanism of blue
light irradiation of psoriatic skin, and tested the hypothesis
that regulation of proliferation is a key process. We
implemented a mechanistic model of cellular epidermal dynamics
to analyze whether a temporary decrease of keratinocytes
hyper-proliferation can explain the outcome of phototherapy
with blue light. Our results suggest that the main effect of
blue light on keratinocytes impacts the proliferative cells.
They show that the decrease in the keratinocytes proliferative
capacity is sufficient to induce a transient decrease in the
severity of psoriasis. To study the impact of the therapeutic
regime on the efficacy of psoriasis treatment, we performed
simulations for different combinations of the treatment
parameters, i.e., length of treatment, fluence (also referred
to as dose), and intensity. These simulations indicate that
high efficacy is achieved by regimes with long duration and
high fluence levels, regardless of the chosen intensity. Our
modeling approach constitutes a framework for testing diverse
hypotheses on the underlying mechanism of blue light-based
phototherapy, and for designing effective strategies for the
treatment of psoriasis.
This model is hosted on
BioModels Database
and identified by:
BIOMD0000000695.
To cite BioModels Database, please use:
Chelliah V et al. BioModels: ten-year
anniversary. Nucl. Acids Res. 2015, 43(Database
issue):D542-8.
To the extent possible under law, all copyright and related or
neighbouring rights to this encoded model have been dedicated to
the public domain worldwide. Please refer to
CC0
Public Domain Dedication for more information.
2024-09-02 | BIOMD0000000695 | BioModels