The Anti-Aging and Tumor Suppressor Protein Klotho Enhances Differentiation of a Human Oligodendrocytic Hybrid Cell Line

被引:0
|
作者
Ci-Di Chen
Hu Li
Jennifer Liang
Kathryn Hixson
Ella Zeldich
Carmela R. Abraham
机构
[1] Boston University School of Medicine,Department of Biochemistry
[2] Boston University School of Medicine,Department Biomedical Engineering
[3] Boston University School of Medicine,Department of Biology
[4] Boston University School of Medicine,Department of Pharmacology and Experimental Therapeutics
[5] Mayo Clinic,Center for Individualized Medicine, Department of Molecular Pharmacology and Experimental Therapeutics
来源
Journal of Molecular Neuroscience | 2015年 / 55卷
关键词
Aging; Cancer; Myelin; Signaling pathways; ERK; Apoptosis; Glia;
D O I
暂无
中图分类号
学科分类号
摘要
Klotho functions as an aging suppressor, which, in mice, extends lifespan when overexpressed and accelerates development of aging-like phenotypes when disrupted. Klotho is mainly expressed in brain and kidney and is secreted into the serum and CSF. We have previously shown that Klotho is reduced in brains of old monkeys, rats, and mice. We further reported the ability of Klotho to enhance oligodendrocyte differentiation and myelination. Here, we examined the signaling pathways induced by Klotho in MO3.13, a human oligodendrocytic hybrid cell line. We show that exogenous Klotho affects the ERK and Akt signaling pathways, decreases the proliferative abilities and enhances differentiation of MO3.13 cells. Furthermore, microarray analysis of Klotho-treated MO3.13 cells reveals a massive change in gene expression with 80 % of the differentially expressed genes being downregulated. Using gene set enrichment analysis, we predicted potential transcription factors involved in regulating Klotho-treated MO3.13 cells and found that these cells are highly enriched in the gene sets, that are similarly observed in cancer, cardiovascular disease, stress, aging, and hormone-related chemical and genetic perturbations. Since Klotho is downregulated in all brain tumors tested to date, enhancing Klotho has therapeutic potential for treating brain and other malignancies.
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页码:76 / 90
页数:14
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