Environmental Stressors Impact Placentation Through Actions On Trophoblast, Immune, and Endothelial Cell Dynamics
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ABSTRACT:
PROVIDER: PRJNA738892 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14854500.fastq.gz | Fastqsanger.gz | |||
| SRR14854501.fastq.gz | Fastqsanger.gz | |||
| SRR14854502.fastq.gz | Fastqsanger.gz | |||
| SRR14854494.fastq.gz | Fastqsanger.gz | |||
| SRR14854495.fastq.gz | Fastqsanger.gz |
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Project description:Our environment is replete with chemicals that can affect embryonic and extraembryonic development. Dioxins, such as 2,3,7,8-tetrachlorodibenzodioxin (TCDD), are compounds affecting development through the aryl hydrocarbon receptor (AHR). TCDD exposures can lead to placental adaptations and at higher doses pregnancy termination. Deep intrauterine endovascular trophoblast cell invasion was a prominent placentation site adaptation to TCDD. TCDD-mediated placental adaptations were dependent upon maternal AHR signaling but not placental or fetal AHR nor the presence of a prominent AHR target, cytochrome P450 1A1 (CYP1A1). At the placentation site, TCDD stimulated CYP1A1 transcription within endothelial cells but not trophoblast cells. Immune and trophoblast cell behaviors at the uterine-placental interface were guided by the actions of TCDD on endothelial cells. In summary, we have identified an AHR regulatory pathway activated by environmental stressors affecting uterine and trophoblast cell dynamics and the formation of the hemochorial placenta.
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Project description:Our environment is replete with chemicals that can affect embryonic and extraembryonic development. Dioxins, such as 2,3,7,8-tetrachlorodibenzodioxin (TCDD), are compounds affecting development through the aryl hydrocarbon receptor (AHR). TCDD exposures can lead to placental adaptations and at higher doses pregnancy termination. Deep intrauterine endovascular trophoblast cell invasion was a prominent placentation site adaptation to TCDD. TCDD-mediated placental adaptations were dependent upon maternal AHR signaling but not placental or fetal AHR nor the presence of a prominent AHR target, cytochrome P450 1A1 (CYP1A1). At the placentation site, TCDD stimulated CYP1A1 transcription within endothelial cells but not trophoblast cells. Immune and trophoblast cell behaviors at the uterine-placental interface were guided by the actions of TCDD on endothelial cells. In summary, we have identified an AHR regulatory pathway activated by environmental stressors affecting uterine and trophoblast cell dynamics and the formation of the hemochorial placenta.
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Project description:Our environment is replete with chemicals that can affect embryonic and extraembryonic development. Dioxins, such as 2,3,7,8-tetrachlorodibenzodioxin (TCDD), are compounds affecting development through the aryl hydrocarbon receptor (AHR). TCDD exposures can lead to placental adaptations and at higher doses pregnancy termination. Deep intrauterine endovascular trophoblast cell invasion was a prominent placentation site adaptation to TCDD. TCDD-mediated placental adaptations were dependent upon maternal AHR signaling but not placental or fetal AHR nor the presence of a prominent AHR target, cytochrome P450 1A1 (CYP1A1). At the placentation site, TCDD stimulated CYP1A1 transcription within endothelial cells but not trophoblast cells. Immune and trophoblast cell behaviors at the uterine-placental interface were guided by the actions of TCDD on endothelial cells. In summary, we have identified an AHR regulatory pathway activated by environmental stressors affecting uterine and trophoblast cell dynamics and the formation of the hemochorial placenta.
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Project description:ENVIRONMENTAL STRESSORS IMPACT PLACENTATION THROUGH ACTIONS ON TROPHOBLAST, IMMUNE , AND ENDOTHELIAL CELL DYNAMICS
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Project description:Establishment of the hemochorial placentation site requires the exodus of trophoblast cells from the placenta and their transformative actions on the uterine vasculature, which is a critical but poorly understood developmental process. CBP/p300-interacting transactivator with glutamic acid/aspartic acid-rich carboxyl terminal domain 2 (CITED2) is a member of the CITED protein family of co-regulators and has been shown to possess roles in embryogenesis, including placenta development. We examined the involvement of CITED2 in the rat, which exhibits deep hemochorial placentation, a feature it shares with the human. CITED2 is distinctively expressed in the junctional zone compartment of the rat placentation site and in intrauterine invasive trophoblast cells. Homozygous disruption of the rat Cited2 locus resulted in placental and fetal growth restriction and abnormalities in heart and lung development, which are also characteristic of the CITED deficient mouse model. However, other features of the mouse Cited2 null phenotype, including exencephaly, adrenal gland agenesis, and prenatal lethality were not associated with CITED2 deficiency in the rat. Trophoblast-specific lentiviral CITED2 knockdown in the rat yielded a growth arrested placental phenotype. Smaller Cited2 null placentas were associated with a growth restricted junctional zone and coincided with a delay in intrauterine trophoblast cell invasion. Invasive trophoblast cells arise from the junctional zone. Transcriptomes of the junctional zone, the invasive trophoblast cell lineage, and differentiating trophoblast stem cells were affected by CITED2 disruption, as were placental adaptations to hypoxia and exposure to viral mimetics. Evidence for the conservation of CITED2 expression in human placental tissue and conserved actions in invasive/extravillous trophoblast cell development were demonstrated. We conclude that CITED2 is a conserved regulator of deep hemochorial placentation.
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