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Global microRNA and protein expression in human term placenta
Hanna Östling1, Maria Lodefalk2,3, Helena Backman1
1Department of Obstetrics and Gynaecology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Frontiers in Medicine
|November 4, 2022
Summary
This study analyzed microRNAs (miRNAs) and proteins in healthy term placentas, identifying key molecules involved in fetal development and functions like immune response and lipid metabolism.
Area of Science:
- Reproductive Biology
- Molecular Biology
- Genomics
Background:
- Understanding placental molecular pathways is crucial for fetal growth.
- Global expression profiling of microRNAs (miRNAs) and proteins offers insights into normal term pregnancy.
Purpose of the Study:
- To explore global miRNA and protein expression in healthy human term placentas.
- To identify key molecular functions important for normal fetal development.
Main Methods:
- Utilized next-generation sequencing for miRNA analysis.
- Employed nano-scale liquid chromatography tandem mass spectrometry for protein analysis.
- Analyzed placental samples (n=19) from uncomplicated term pregnancies.
Main Results:
- Detected 895 mature miRNAs and 6,523 proteins, with 123 miRNAs and 346 proteins highly abundant.
- Highly abundant miRNAs mapped to chromosomes 19, 14, and X.
- Identified common predicted functions including immune/inflammatory response, lipid metabolism, and nervous system development.
Conclusions:
- Findings suggest roles for lipid metabolism and neurodevelopment in term fetal processes.
- Immune and inflammatory responses may relate to normal vaginal delivery.
- This comprehensive data enhances understanding of placental function and pathology.
