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De Bono C, Thellier C, Bertrand N, Sturny R, Jullian E, Cortes C, Stefanovic S, Zaffran S, Théveniau-Ruissy M, Kelly RG. T-box genes and retinoic acid signaling regulate the segregation of arterial and venous pole progenitor cells in the murine second heart field. Hum Mol Genet 2019; 27:3747-3760. [PMID: 30016433 DOI: 10.1093/hmg/ddy266] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/11/2018] [Indexed: 01/10/2023] Open
Abstract
The arterial and venous poles of the mammalian heart are hotspots of congenital heart defects (CHD) such as those observed in 22q11.2 deletion (or DiGeorge) and Holt-Oram syndromes. These regions of the heart are derived from late differentiating cardiac progenitor cells of the Second Heart Field (SHF) located in pharyngeal mesoderm contiguous with the elongating heart tube. The T-box transcription factor Tbx1, encoded by the major 22q11.2 deletion syndrome gene, regulates SHF addition to both cardiac poles from a common progenitor population. Despite the significance of this cellular addition the mechanisms regulating the deployment of common progenitor cells to alternate cardiac poles remain poorly understood. Here we demonstrate that Tbx5, mutated in Holt-Oram syndrome and essential for venous pole development, is activated in Tbx1 expressing cells in the posterior region of the SHF at early stages of heart tube elongation. A subset of the SHF transcriptional program, including Tbx1 expression, is subsequently downregulated in Tbx5 expressing cells, generating a transcriptional boundary between Tbx1-positive arterial pole and Tbx5-positive venous pole progenitor cell populations. We show that normal downregulation of the definitive arterial pole progenitor cell program in the posterior SHF is dependent on both Tbx1 and Tbx5. Furthermore, retinoic acid (RA) signaling is required for Tbx5 activation in Tbx1-positive cells and blocking RA signaling at the time of Tbx5 activation results in atrioventricular septal defects at fetal stages. Our results reveal sequential steps of cardiac progenitor cell patterning and provide mechanistic insights into the origin of common forms of CHD.
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Affiliation(s)
| | | | | | - Rachel Sturny
- Aix-Marseille Univ, CNRS UMR 7288, IBDM, Marseille, France
| | | | - Claudio Cortes
- Aix-Marseille Univ, CNRS UMR 7288, IBDM, Marseille, France
| | | | | | | | - Robert G Kelly
- Aix-Marseille Univ, CNRS UMR 7288, IBDM, Marseille, France
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Song X, Rui C, Meng L, Zhang R, Shen R, Ding H, Li J, Li J, Long W. Long non-coding RNA RPAIN regulates the invasion and apoptosis of trophoblast cell lines via complement protein C1q. Oncotarget 2018; 8:7637-7646. [PMID: 28032589 PMCID: PMC5352349 DOI: 10.18632/oncotarget.13826] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 12/01/2016] [Indexed: 12/16/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are key regulatory molecules that are involved in a variety of biological processes and human diseases. Their impact on early onset preeclampsia remains unclear. In this study, we tested the expression of RPAIN (transcript variant 12 of RPA interacting protein, a non-coding RNA, NR_027683.1) in placenta tissues derived from 25 pregnant women with PE and 15 healthy pregnant women using quantitative real-time PCR. The effect of RPAIN on trophoblast proliferation, invasion, and apoptosis and the underlying mechanisms were examined in trophoblast cell lines (HTR-8/SVneo). The results showed that RPAIN expression levels were significantly increased in early onset preeclamptic placentas compared to normal controls. The proliferation and invasive abilities of the trophoblast cells were significantly inhibited, and the apoptosis abilities of the trophoblast cells were significantly promoted when RPAIN was overexpressed. In addition, the overexpression of RPAIN inhibited the expression of complement protein C1q. Furthermore, C1q overexpression rescued the decreased cell invasion and enhanced cell apoptosis in RPAIN-overexpressing trophoblast cells. Our results suggest that increased RPAIN levels may contribute to the development of preeclampsia through regulating trophoblast invasion and apoptosis via C1q. Therefore, we proposed RPAIN as a novel lncRNA molecule, which might contribute to the development of PE (preeclampsia) and might compose a potential diagnostic and therapeutic target for this disease.
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Affiliation(s)
- Xuejing Song
- Department of Obstetrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China.,Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Can Rui
- Department of Obstetrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Li Meng
- Nanjing Maternity and Child Health Medical Institute, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Rui Zhang
- Department of Obstetrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Rong Shen
- Nanjing Maternity and Child Health Medical Institute, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Hongjuan Ding
- Department of Obstetrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Jun Li
- State key Laboratory of Reproductive Medicine, Department of Plastic and Cosmetic Surgery, Maternal and Child Health Medical Institute, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Jingyun Li
- State key Laboratory of Reproductive Medicine, Department of Plastic and Cosmetic Surgery, Maternal and Child Health Medical Institute, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Wei Long
- Department of Obstetrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
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Zhang Y, Han Q, Li C, Li W, Fan H, Xing Q, Yan B. Genetic analysis of the TBX1 gene promoter in indirect inguinal hernia. Gene 2013; 535:290-3. [PMID: 24295890 DOI: 10.1016/j.gene.2013.11.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 10/31/2013] [Accepted: 11/03/2013] [Indexed: 12/22/2022]
Abstract
Inguinal hernia is a common disease, most cases of which are indirect inguinal hernia (IIH). Genetic factors play an important role for inguinal hernia. Increased incidences of inguinal hernia have been reported in patients with 22q11.2 microdeletion syndrome, which is mainly caused by TBX1 gene mutations. Thus, we hypothesized that altered TBX1 gene expression may contribute to IIH development. In this study, the human TBX1 gene promoter was genetically analyzed in children with IIH (n=100) and ethnic-matched controls (n=167). Functions of DNA sequence variants (DSVs) within the TBX1 gene promoter were examined in cultured human fibroblast cells. The results showed that two heterozygous DSVs were found, both of which were single nucleotide polymorphisms. One DSV, g.4248 C>T (rs41298629), was identified in a 2-year-old boy with right-sided IIH, but not in all controls, which significantly decreased TBX1 gene promoter activity. Another DSV, g.4199 C>T (rs41260844), was found in both IIH patients and controls with similar frequencies (P>0.05), which did not affect TBX1 gene promoter activity. Collectively, our data suggested that the DSV within the TBX1 gene promoter may change TBX1 level, contributing to IIH development as a rare risk factor. Underlying molecular mechanisms need to be established.
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Affiliation(s)
- Yu Zhang
- Division of General Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Qingluan Han
- Division of General Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Chunyu Li
- Division of Electrocardiogram, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Wei Li
- Division of General Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Hongjin Fan
- Division of General Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Qining Xing
- Division of General Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China
| | - Bo Yan
- Shandong Provincial Key Laboratory of Cardiac Disease Diagnosis and Treatment, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, Shandong 272029, China.
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