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Lei Ye
Lei Ye
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Xiaoying Li
Xiaoying Li
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Xiangyin Kong
Xiangyin Kong
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Weiqing Wang
Weiqing Wang
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Yufang Bi
Yufang Bi
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Landian Hu
Landian Hu
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Bin Cui
Bin Cui
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Xi Li
Xi Li
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Guang Ning
Guang Ning
Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Second Medical University, 197 Ruijin Er Lu, Shanghai 200025, People’s Republic of China
Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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Health Science Center, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, Shanghai 200025, People’s Republic of China
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The ectopic ACTH syndrome is caused by abnormal expression of the POMC gene product arising from non-pituitary tumors in response to the ectopic activation of the pituitary-specific promoter of this gene. It has been proved that methylation of the CpG island in the promoter region is associated with silencing of some genes. Using bisulphite sequencing, we identified hypermethylation in the 5′ promoter region of the POMC gene in three normal thymuses and one large cell lung cancer, and hypomethylation in five thymic carcinoid tumors resected from patients with ectopic ACTH syndrome. The region undergoing hypermethylation was narrowed to coordinates −417 to −260 of the POMC promoter. Furthermore, we observed that the levels of POMC expression correlated with the methylation density at −417 to −260 bp across the E2 transcription factor binding region of the POMC promoter. It is concluded that hypomethylation of the POMC promoter in thymic carcinoids correlates with POMC overexpression and the ectopic ACTH syndrome.
