Ionizing Radiation Potentiates High Fat Diet-Induced Insulin Resistance and Reprograms Skeletal Muscle and Adipose Progenitor Cells
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Ionizing Radiation Potentiates High Fat Diet-Induced Insulin Resistance and Reprograms Skeletal Muscle and Adipose Progenitor Cells. / Nylander, Vibe; Ingerslev, Lars R; Andersen, Emil; Fabre, Odile; Garde, Christian; Rasmussen, Morten; Citirikkaya, Kiymet; Bæk, Josephine; Christensen, Gitte L; Aznar, Marianne; Specht, Lena; Simar, David; Barrès, Romain.
In: Diabetes, Vol. 65, No. 12, 20.09.2016, p. 3573-3584.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Ionizing Radiation Potentiates High Fat Diet-Induced Insulin Resistance and Reprograms Skeletal Muscle and Adipose Progenitor Cells
AU - Nylander, Vibe
AU - Ingerslev, Lars R
AU - Andersen, Emil
AU - Fabre, Odile
AU - Garde, Christian
AU - Rasmussen, Morten
AU - Citirikkaya, Kiymet
AU - Bæk, Josephine
AU - Christensen, Gitte L
AU - Aznar, Marianne
AU - Specht, Lena
AU - Simar, David
AU - Barrès, Romain
N1 - © 2016 by the American Diabetes Association.
PY - 2016/9/20
Y1 - 2016/9/20
N2 - Exposure to ionizing radiation increases the risk of chronic metabolic disorders such as insulin resistance and type 2 diabetes later in life. We hypothesized that irradiation reprograms the epigenome of metabolic progenitor cells, which could account for impaired metabolism after cancer treatment. C57Bl/6 mice were treated with a single dose of irradiation and subjected to high fat diet (HFD). RNA Sequencing and Reduced Representation Bisulfite Sequencing were used to create transcriptomic and epigenomic profiles of preadipocytes and skeletal muscle satellite cells collected from irradiated mice. Mice subjected to total body irradiation showed alterations in glucose metabolism and, when challenged with HFD, marked hyperinsulinemia. Insulin signaling was chronically disrupted in skeletal muscle and adipose progenitor cells collected from irradiated mice and differentiated in culture. Epigenomic profiling of skeletal muscle and adipose progenitor cells from irradiated animals revealed substantial DNA methylation changes, notably for genes regulating the cell cycle, glucose/lipid metabolism and expression of epigenetic modifiers. Our results show that total body irradiation alters intracellular signaling and epigenetic pathways regulating cell proliferation and differentiation of skeletal muscle and adipose progenitor cells, and provide a possible mechanism by which irradiation used in cancer treatment increases the risk for metabolic disease later in life.
AB - Exposure to ionizing radiation increases the risk of chronic metabolic disorders such as insulin resistance and type 2 diabetes later in life. We hypothesized that irradiation reprograms the epigenome of metabolic progenitor cells, which could account for impaired metabolism after cancer treatment. C57Bl/6 mice were treated with a single dose of irradiation and subjected to high fat diet (HFD). RNA Sequencing and Reduced Representation Bisulfite Sequencing were used to create transcriptomic and epigenomic profiles of preadipocytes and skeletal muscle satellite cells collected from irradiated mice. Mice subjected to total body irradiation showed alterations in glucose metabolism and, when challenged with HFD, marked hyperinsulinemia. Insulin signaling was chronically disrupted in skeletal muscle and adipose progenitor cells collected from irradiated mice and differentiated in culture. Epigenomic profiling of skeletal muscle and adipose progenitor cells from irradiated animals revealed substantial DNA methylation changes, notably for genes regulating the cell cycle, glucose/lipid metabolism and expression of epigenetic modifiers. Our results show that total body irradiation alters intracellular signaling and epigenetic pathways regulating cell proliferation and differentiation of skeletal muscle and adipose progenitor cells, and provide a possible mechanism by which irradiation used in cancer treatment increases the risk for metabolic disease later in life.
U2 - 10.2337/db16-0364
DO - 10.2337/db16-0364
M3 - Journal article
C2 - 27650856
VL - 65
SP - 3573
EP - 3584
JO - Diabetes
JF - Diabetes
SN - 0012-1797
IS - 12
ER -
ID: 166505086