The current coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus (SARS-CoV-2) remains a threat to pregnant women. However, the impact of early pregnancy SARS-CoV-2 infection on the maternal-fetal interface remains poorly understood. Here, we present a comprehensive analysis of single-cell transcriptomics and metabolomics in placental samples infected with SARS-CoV-2 during early pregnancy. Compared to control placentas, SARS-CoV-2 infection elicited immune responses at the maternal-fetal interface and induced metabolic alterations in amino acid and phospholipid profiles during the initial weeks post-infection. However, subsequent immune cell activation and heightened immune tolerance in trophoblast cells established a novel dynamic equilibrium that mitigated the impact on the maternal-fetal interface. Notably, the immune response and metabolic alterations at the maternal-fetal interface exhibited a gradual decline during the second trimester. Our study underscores the adaptive immune tolerance mechanisms and establishment of immunological balance during the first two trimesters following maternal SARS-CoV-2 infection.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11131034 | PMC |
| http://dx.doi.org/10.1093/procel/pwae006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Impact of Inflammatory Cytokines on Recurrent Pregnancy Loss: A Preliminary Investigation.
Reprod Sci
January 2025
Department of Anatomy, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India.
Recurrent pregnancy loss (RPL), defined as two or more consecutive miscarriages before 20 weeks of gestation, affects 1-2% of couples worldwide. Pro-inflammatory cytokines, such as TNF-α, IL-1β and IL-6 play critical roles in early pregnancy, while anti-inflammatory cytokines like TGF-β and IL-10 promote immune tolerance to prevent harmful inflammatory responses that play important role in placental and fetal development. This aim of the study is to analyse the levels of inflammatory cytokines in blood serum from RPL patients and healthy women (control).
View Article and Find Full Text PDFPreventive vs. Therapeutic Effects of Shoutai Wan: Maintaining an Acidic Microenvironment at the Maternal-Fetal Interface to Promote Angiogenesis and Minimize Pregnancy Loss in RSA Mice.
J Ethnopharmacol
January 2025
College of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China; Collaborative Innovation Center of Integrated Chinese and Western Medicine on Reproductive Disease, Shijiazhuang, 050091, China; Hebei Key Laboratory of Integrative Medicine on Liver-kidney Patterns, Shijiazhuang, 050091, China. Electronic address:
Ethnopharmacological Relevance: The classic TCM prescription, Shoutai Wan (STW), is extensively used in clinical settings to manage threatened miscarriage and Recurrent spontaneous abortion (RSA). The complexity of pregnancy physiology, coupled with diverse etiologies, and the specificity of energy metabolism for normal embryo attachment and development,pose challenges to clinical diagnosis and treatment. The specific molecular mechanisms of how STW regulates these biological processes and contributes to the treatment of RSA remain to be elucidated.
View Article and Find Full Text PDFMaternal microchimeric cell trafficking and its biological consequences depend on the onset of inflammation at the feto-maternal interface.
Semin Immunopathol
January 2025
Gottfried Schatz Research Center, Division of Cell Biology, Histology and Embryology, Medical University of Graz, Graz, Austria.
Microchimerism is defined as the presence of a small population of genetically distinct cells within a host that is derived from another individual. Throughout pregnancy, maternal and fetal cells are known to traffic across the feto-maternal interface and result in maternal and fetal microchimerism, respectively. However, the routes of cell transfer, the molecular signaling as well as the timing in which trafficking takes place are still not completely understood.
View Article and Find Full Text PDFDeletion of BMP4 impairs trophoblast function and decidual macrophage polarization via autophagy leading to recurrent spontaneous abortion.
Int Immunopharmacol
January 2025
Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China. Electronic address:
Bone morphogenetic protein 4 (BMP4) is widely involved in the regulation of cell proliferation and differentiation, but its role in Recurrent Spontaneous Abortion (RSA) remains unclear. RSA is a disease that affects roughly 1-2% of partner pairs, but its pathogenesis is still unclear. In recent years, many studies have focused on the role of decidual macrophages in RSA.
View Article and Find Full Text PDFCD8+ and CD8- NK Cells and Immune Checkpoint Networks in Peripheral Blood During Healthy Pregnancy.
Int J Mol Sci
January 2025
Department of Medical Microbiology and Immunology, Medical School, University of Pecs, 12 Szigeti Street, 7624 Pecs, Hungary.
Pregnancy involves significant immunological changes to support fetal development while protecting the mother from infections. A growing body of evidence supports the importance of immune checkpoint pathways, especially at the maternal-fetal interface, although limited information is available about the peripheral expression of these molecules by CD8+ and CD8- NK cell subsets during the trimesters of pregnancy. Understanding the dynamics of these immune cells and their checkpoint pathways is crucial for elucidating their roles in pregnancy maintenance and potential complications.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!