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Strathmann EA, Hölker I, Tschernoster N, Hosseinibarkooie S, Come J, Martinat C, Altmüller J, Wirth B. Epigenetic regulation of plastin 3 expression by the macrosatellite DXZ4 and the transcriptional regulator CHD4. Am J Hum Genet 2023; 110:442-459. [PMID: 36812914 PMCID: PMC10027515 DOI: 10.1016/j.ajhg.2023.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 02/03/2023] [Indexed: 02/23/2023] Open
Abstract
Dysregulated Plastin 3 (PLS3) levels associate with a wide range of skeletal and neuromuscular disorders and the most common types of solid and hematopoietic cancer. Most importantly, PLS3 overexpression protects against spinal muscular atrophy. Despite its crucial role in F-actin dynamics in healthy cells and its involvement in many diseases, the mechanisms that regulate PLS3 expression are unknown. Interestingly, PLS3 is an X-linked gene and all asymptomatic SMN1-deleted individuals in SMA-discordant families who exhibit PLS3 upregulation are female, suggesting that PLS3 may escape X chromosome inactivation. To elucidate mechanisms contributing to PLS3 regulation, we performed a multi-omics analysis in two SMA-discordant families using lymphoblastoid cell lines and iPSC-derived spinal motor neurons originated from fibroblasts. We show that PLS3 tissue-specifically escapes X-inactivation. PLS3 is located ∼500 kb proximal to the DXZ4 macrosatellite, which is essential for X chromosome inactivation. By applying molecular combing in a total of 25 lymphoblastoid cell lines (asymptomatic individuals, individuals with SMA, control subjects) with variable PLS3 expression, we found a significant correlation between the copy number of DXZ4 monomers and PLS3 levels. Additionally, we identified chromodomain helicase DNA binding protein 4 (CHD4) as an epigenetic transcriptional regulator of PLS3 and validated co-regulation of the two genes by siRNA-mediated knock-down and overexpression of CHD4. We show that CHD4 binds the PLS3 promoter by performing chromatin immunoprecipitation and that CHD4/NuRD activates the transcription of PLS3 by dual-luciferase promoter assays. Thus, we provide evidence for a multilevel epigenetic regulation of PLS3 that may help to understand the protective or disease-associated PLS3 dysregulation.
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Affiliation(s)
- Eike A Strathmann
- Institute of Human Genetics, University Hospital of Cologne, University Cologne, Kerpener Str. 34, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50674 Cologne, Germany
| | - Irmgard Hölker
- Institute of Human Genetics, University Hospital of Cologne, University Cologne, Kerpener Str. 34, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50674 Cologne, Germany
| | - Nikolai Tschernoster
- Institute of Human Genetics, University Hospital of Cologne, University Cologne, Kerpener Str. 34, 50931 Cologne, Germany; Cologne Center for Genomics and West German Genome Center, University of Cologne, 50931 Cologne, Germany
| | - Seyyedmohsen Hosseinibarkooie
- Institute of Human Genetics, University Hospital of Cologne, University Cologne, Kerpener Str. 34, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50674 Cologne, Germany
| | - Julien Come
- INSERM/ UEVE UMR 861, Université Paris Saclay, I-STEM, 91100 Corbeil-Essonnes, France
| | - Cecile Martinat
- INSERM/ UEVE UMR 861, Université Paris Saclay, I-STEM, 91100 Corbeil-Essonnes, France
| | - Janine Altmüller
- Cologne Center for Genomics and West German Genome Center, University of Cologne, 50931 Cologne, Germany
| | - Brunhilde Wirth
- Institute of Human Genetics, University Hospital of Cologne, University Cologne, Kerpener Str. 34, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Center for Rare Diseases, University Hospital of Cologne, 50931 Cologne, Germany.
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Yuan H, Liu C, Wang X, Huang T, Liu D, Huang S, Wu Z, Liu Y, Yin P, Yang B. Association between aberrant amino acid metabolism and nonchromosomal modifications fetal structural anomalies: A cohort study. Front Endocrinol (Lausanne) 2023; 14:1072461. [PMID: 36909308 PMCID: PMC9998993 DOI: 10.3389/fendo.2023.1072461] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/06/2023] [Indexed: 03/14/2023] Open
Abstract
BACKGROUND More than half of the cases of fetal structural anomalies have no known cause with standard investigations like karyotype testing and chromosomal microarray. The differential metabolic profiles of amniotic fluid (AF) and maternal blood may reveal valuable information about the physiological processes of fetal development, which may provide valuable biomarkers for fetal health diagnostics. METHODS This cohort study of singleton-pregnant women had indications for amniocentesis, including structural anomalies and a positive result from maternal serum screening or non-invasive prenatal testing, but did not have any positive abnormal karyotype or chromosomal microarray analysis results. A total of 1580 participants were enrolled between June 2021 and March 2022. Of the 1580 pregnant women who underwent amniocentesis, 294 were included in the analysis. There were 137 pregnant women in the discovery cohort and 157 in the validation cohort. RESULTS High-coverage untargeted metabolomic analysis of AF revealed distinct metabolic signatures with 321 of the 602 metabolites measured (53%) (false discovery rate, q < 0.005), among which amino acids predominantly changed in structural anomalies. Targeted metabolomics identified glutamate and glutamine as novel predictive markers for structural anomalies, their vital role was also confirmed in the validation cohort with great predictive ability, and the area under the receiver operating characteristic curves (AUCs) were 0.862 and 0.894 respectively. And AUCs for glutamine/glutamate were 0.913 and 0.903 among the two cohorts. CONCLUSIONS Our results suggested that the aberrant glutamine/glutamate metabolism in AF is associated with nonchromosomal modificantions fetal structural anomalies. Based on our findings, a novel screening method could be established for the nonchromosomal modificantions fetal structural anomalies. And the results also indicate that monitoring fetal metabolic conditions (especially glutamine and glutamine metabolism) may be helpful for antenatal diagnosis and therapy.
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Affiliation(s)
- Huizhen Yuan
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Chang Liu
- Chinese Academy of Sciences Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- Key Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Institute of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Xinrong Wang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Tingting Huang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Danping Liu
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Shuhui Huang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Zeming Wu
- iPhenome Biotechnology (Yun Pu Kang) Inc., Dalian, China
| | - Yanqiu Liu
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
- *Correspondence: Bicheng Yang, ; Yanqiu Liu, ; Peiyuan Yin,
| | - Peiyuan Yin
- Key Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Institute of Integrative Medicine, Dalian Medical University, Dalian, China
- *Correspondence: Bicheng Yang, ; Yanqiu Liu, ; Peiyuan Yin,
| | - Bicheng Yang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
- *Correspondence: Bicheng Yang, ; Yanqiu Liu, ; Peiyuan Yin,
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Fan X, Xu M, Chen X, Ren Q, Fan Y, Wang R, Chen J, Cui L, Wang Z, Sun X, Guo N. Proteomic profiling and correlations with clinical features reveal biomarkers indicative of diabetic retinopathy with diabetic kidney disease. Front Endocrinol (Lausanne) 2022; 13:1001391. [PMID: 36277688 PMCID: PMC9581084 DOI: 10.3389/fendo.2022.1001391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/20/2022] [Indexed: 11/20/2022] Open
Abstract
Diabetic retinopathy (DR) and diabetic kidney disease (DKD) are complications of diabetes and place serious health and economic burdens on society. However, the identification and characterization of early biomarkers for DKD, especially for nonproliferative DR (NPDR) patients with DKD, are still needed. This study aimed to demonstrate the plasma proteomic profiles of NPDR+DKD and NPDR patients and identify potential biomarkers for early diagnosis of DKD. Fifteen plasma samples from the NPDR group and nine from the NPDR+DKD group were analyzed by LC-MS/MS to identify the differentially expressed proteins between the two groups. Functional enrichment, protein-protein interaction and clinical feature correlation analyses revealed the target protein candidates, which were verified using ELISA and receiver operating characteristic (ROC) analysis. In total, 410 proteins were detected in plasma; 15 were significantly upregulated and 7 were downregulated in the NPDR+DKD group. Bioinformatics analysis suggested that DKD is closely related to cell adhesion and immunity pathways. β-2-Microglobulin (B2M) and vimentin (VIM) were upregulated in NPDR+DKD, enriched as hub proteins and strongly correlated with clinical features. ELISA showed that B2M (p<0.001) and VIM (p<0.0001) were significantly upregulated in NPDR+DKD compared with NPDR. In ROC analysis, B2M and VIM could distinguish DKD from NPDR with area under the curve values of 0.9000 (p < 0.0001) and 0.9950. Our proteomic study revealed alterations in the proteomic profile and identified VIM and B2M as early biomarkers of DKD, laying the foundation for the prevention, diagnosis and treatment of DKD.
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Affiliation(s)
- Xiao’e Fan
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
- *Correspondence: Xiao’e Fan,
| | - Manhong Xu
- Department of Vitreoretinal and Ocular Trauma, Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research Center of Ophthalmology and Visual Science, Tianjin, China
| | - Xin Chen
- Department of Vitreoretinal and Ocular Trauma, Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research Center of Ophthalmology and Visual Science, Tianjin, China
| | - Qianfeng Ren
- Department of Pathology, Jincheng People’s Hospital, Jincheng, China
| | - Yan Fan
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
| | - Ranran Wang
- Department of Laboratory, Jincheng People’s Hospital, Jincheng, China
| | - Jiaqi Chen
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
| | - Li Cui
- Department of Nephrology, Jincheng People’s Hospital, Jincheng, China
| | - Zhengmin Wang
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
| | - Xiaoyan Sun
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
| | - Nannan Guo
- Department of Ophthalmology, Jincheng People’s Hospital, Jincheng, China
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