Preimplantation Development
Preimplantation Development - Related Videos
11:25
Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
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Cited by 42 •
2016
This protocol presents a method to perform quantitative, single-cell in situ analysis of protein expression to study lineage specification in mouse preimplantation embryos. The procedures necessary for collection of blastocysts, whole-mount immunofluorescent detection of proteins, imaging of samples on a confocal microscope, and nuclear segmentation and image analysis are described.
08:43
Loss- and Gain-of-function Approach to Investigate Early Cell Fate Determinants in Preimplantation Mouse Embryos
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Cited by 2 •
2016
The goal of this protocol is to describe a loss- and gain-of function method that is applicable to identify neogenin as a stage-specific receptor that leads to trophectoderm and inner cell mass differentiation in preimplantation mouse embryos.
11:10
Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats
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Cited by 23 •
2011
Preimplantation embryos may be cryopreserved after placement into a hypertonic cryoprotective solution to cause cellular dehydration. After equilibration, ice crystal formation is induced in the solution surrounding the embryo. Further dehydration occurs as the embryo is slowly cooled to subzero temperatures before plunging into liquid nitrogen for storage.
12:59
Derivation of Stem Cell Lines from Mouse Preimplantation Embryos
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Cited by 1 •
2017
This article describes a protocol to efficiently derive and culture pluripotent stem cell lines from mouse embryos at the blastocyst stage.
00:09
Semiconductor Sequencing for Preimplantation Genetic Testing for Aneuploidy
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Cited by 2 •
2019
Here, we introduce a semiconductor sequencing method for preimplantation genetic testing for aneuploidy (PGT-A) with the advantages of short turnaround time, low cost, and high throughput.
FAQs
During cleavage, the zygote undergoes repeated divisions before compaction produces a morula. Subsequent organization creates a blastocyst containing two distinguishable cell populations, the inner cell mass and trophectoderm. This progression is important because development must preserve embryonic potential while the embryo advances toward the implantation stage.
The inner cell mass and trophectoderm mark an early division of cellular roles within the blastocyst. Their presence provides a framework for considering how cell fate decisions emerge during the first stages of mammalian embryogenesis. Examining these layers therefore helps connect visible embryo structure with developmental potential and the implantation process.
Embryonic genome activation is one of the key events examined during preimplantation development. Its timing and relationship to cleavage, compaction, and blastocyst formation help researchers study how control of development shifts after fertilization. This context is useful for investigating why some embryos fail to progress through early stages.
Movement through the oviduct and interaction with the uterus are not separate from developmental progression. The embryo must advance through its early stages while the uterus coordinates with the timing of implantation. Studying this relationship links embryonic timing with the maternal environment, helping explain why successful early pregnancy depends on developmental and uterine coordination.
In assisted reproductive technologies, knowledge of preimplantation development supports observation and assessment of embryos before implantation. Researchers can consider whether embryos have progressed through structural stages such as morula formation or blastocyst organization, and whether developmental potential is being maintained. These observations provide a biological basis for embryo assessment without reducing evaluation to a single visible feature.
Analysis of developmental failure during this interval can focus on cleavage, compaction, blastocyst formation, cell fate organization, and coordination with implantation. Comparing these transitions helps fertility research identify where progression is disrupted. The same framework connects basic biology with questions about early pregnancy and outcomes in assisted reproduction.
Within biology, this period offers a focused system for studying how an embryo changes from a fertilized cell into an organized structure capable of implantation. It combines cell division, early cell fate decisions, genome activation, embryo transport, and uterine coordination. Because these events occur in sequence, preimplantation development connects cellular mechanisms to reproductive outcome.