Related Experiment Video
Updated: May 21, 2026

05:13
Establishment of an Embryo Implantation Model In Vitro
Published on: June 21, 2024
Molecular aspects of implantation failure
Y E M Koot1, G Teklenburg, M S Salker
1Department of Reproductive Medicine and Gynaecology, University Medical Centre Utrecht, Utrecht, The Netherlands. y.koot@umcutrecht.nl
Biochimica Et Biophysica Acta
|June 12, 2012
Summary
Implantation failure hinders successful pregnancy in most IVF attempts. Understanding molecular factors of embryo and endometrium interactions is key to improving reproductive success.
Area of Science:
- Reproductive biology
- Molecular genetics
- Obstetrics and gynecology
Background:
- Most in-vitro fertilization (IVF) attempts fail due to implantation failure.
- Human embryo implantation is a complex, poorly understood process.
- Insights from clinical data and new technologies are advancing understanding.
Purpose of the Study:
- To review molecular concepts of implantation failure.
- To examine embryonic and endometrial contributions to reproductive failure.
- To discuss markers of endometrial receptivity and embryo selection.
Main Methods:
- Review of current literature on molecular mechanisms of implantation.
- Analysis of clinical data regarding implantation failure and early pregnancy loss.
- Discussion of emerging technologies for molecular interrogation of endometrial-embryo interactions.
Main Results:
- Implantation failure is a major limitation in human reproduction.
- Both embryonic and endometrial factors contribute to implantation failure.
- Endometrial receptivity markers and natural embryo selection are crucial concepts.
Conclusions:
- Understanding the molecular dialogue between the endometrium and embryo is vital.
- Identifying markers for impaired endometrial receptivity can improve IVF outcomes.
- Further research into natural embryo selection may enhance reproductive technologies.
More Related Videos
Related Concept Videos
In Vitro Fertilization
In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
Fertilization
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
Cleavage and Blastulation
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
Genomic Imprinting and Inheritance
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Teratogenicity
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...

