Villous Cytotrophoblast Isolation
Villous Cytotrophoblast Isolation - Related Videos
09:57
siRNA Transfection and EMSA Analyses on Freshly Isolated Human Villous Cytotrophoblasts
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This protocol describes a method for efficiently transfecting siRNA in freshly isolated human villous cytotrophoblasts using microporation and identifying DNA-protein complexes in these cells. Transfected cells can be monitored by Western blot and EMSA analyses during the 4-day culture time.
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This video demonstrates the establishment of primary human placental villous and decidual organ cultures in ex vivo conditions. These models are well-suited for studying pathogenesis at the human maternal-fetal interface.
12:02
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09:33
Three-dimensional Rendering and Analysis of Immunolabeled, Clarified Human Placental Villous Vascular Networks
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08:19
Isolation of Leukocytes from the Human Maternal-fetal Interface
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Cited by 57 •
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Described herein is a protocol to isolate and further study the infiltrating leukocytes of the decidua basalis and decidua parietalis - the human maternal-fetal interface. This protocol maintains the integrity of cell surface markers and yields enough viable cells for downstream applications as proven by flow cytometry analysis.
FAQs
Fine dissection preserves the villous material needed for efficient cell recovery while reducing the tissue into pieces that enzymes can access. Because chorionic villi contain extracellular matrix and cell junctions, tissue architecture can otherwise limit dissociation. This preparation therefore influences how completely cells are released and supports subsequent enrichment of a more usable cytotrophoblast population.
Enzymatic dissociation acts at two complementary barriers: the extracellular matrix surrounding cells and the junctions holding neighboring cells together. Breaking down these structures converts organized villous tissue into a cell suspension, making individual mononuclear trophoblasts accessible for separation. The extent of dissociation matters because incomplete release can reduce recovery, while the goal is to obtain cells suitable for culture or analysis.
Density-based separation exploits differences in the properties of suspended cellular material to enrich the desired mononuclear fraction. Its role is not simply to collect every released cell, but to improve the composition of the preparation before downstream work. A more enriched fraction makes observations in culture or analytical assays more directly attributable to cytotrophoblasts rather than mixed recovered material.
An effective workflow begins with finely dissecting placental chorionic villi, followed by enzymatic treatment to dissociate the matrix and cell junctions. The resulting suspension then undergoes density-based enrichment for mononuclear cytotrophoblasts. Finally, the isolated population can be directed either into culture, where differentiation and syncytiotrophoblast formation are examined, or into analysis of cellular and functional properties.
Once isolated, these cells provide a direct experimental system for following trophoblast differentiation and the formation of syncytiotrophoblasts. They can also support examination of hormone production and cellular interactions with maternal tissues. These readouts connect cell behavior with major developmental functions of the placenta, allowing investigators to study processes that are difficult to resolve in intact villous tissue.
In developmental biology, the preparation can be used to investigate normal placental development as well as pregnancy-related disorders. Researchers can examine how isolated cells respond to genetic, biochemical, or environmental conditions, then relate those responses to differentiation, syncytiotrophoblast formation, hormone production, or maternal-tissue interactions. This makes the method useful for linking experimental perturbations to placental cellular outcomes.