Groundbreaking Research Holds Promise for Revitalizing Human Eggs
In a breakthrough that could significantly enhance IVF success rates, scientists have successfully "rejuvenated" human eggs by introducing a protein into them. The research, published on the Biorxiv website and set to be presented at the British Fertility Conference in Edinburgh, claims to have reversed an age-related defect responsible for genetic errors in embryos.
The key flaw lies in the meiosis process, where sex cells shed half their genetic material, leading to improper alignment of chromosomes during fertilization. As women age, this process becomes increasingly unreliable, resulting in chromosomal abnormalities such as Down's syndrome. The researchers, led by Prof Melina Schuh from the Max Planck Institute for Multidisciplinary Sciences, identified a protein called Shugoshin 1 that declines with age and plays a crucial role in maintaining chromosome alignment.
Microinjections of Shugoshin 1 into eggs donated by fertility patients demonstrated a significant reduction in the number of eggs showing chromosomal abnormalities. In treated eggs, just 29% displayed this defect, compared to 53% in control eggs. While results for women over 35 were less conclusive, the team reported a similar trend.
The approach is promising because it addresses the primary cause of IVF failure and miscarriage in older women: egg quality. By restoring the protein levels to those found in younger eggs, the researchers aim to improve IVF success rates. According to Prof Schuh, this method could nearly halve the number of eggs with chromosomal abnormalities.
While more extensive trials are needed to confirm these findings, the potential benefits are substantial. The average birth rate for each embryo transferred in IVF treatment drops dramatically with female age, and the risk of chromosome disorders increases significantly. This new approach offers a glimmer of hope for women seeking fertility treatments beyond their mid-30s.
However, it is essential to note that this method would not extend fertility beyond menopause, when the egg reserve runs out. Regulators are being consulted about a potential clinical trial, and safety concerns have been identified.
The research has garnered praise from experts in the field, including Dr GΓΌneΕ Taylor of the University of Edinburgh, who described the findings as "really promising." If successful, this approach could revolutionize IVF success rates for older women, offering them more hope and control over their reproductive options.
In a breakthrough that could significantly enhance IVF success rates, scientists have successfully "rejuvenated" human eggs by introducing a protein into them. The research, published on the Biorxiv website and set to be presented at the British Fertility Conference in Edinburgh, claims to have reversed an age-related defect responsible for genetic errors in embryos.
The key flaw lies in the meiosis process, where sex cells shed half their genetic material, leading to improper alignment of chromosomes during fertilization. As women age, this process becomes increasingly unreliable, resulting in chromosomal abnormalities such as Down's syndrome. The researchers, led by Prof Melina Schuh from the Max Planck Institute for Multidisciplinary Sciences, identified a protein called Shugoshin 1 that declines with age and plays a crucial role in maintaining chromosome alignment.
Microinjections of Shugoshin 1 into eggs donated by fertility patients demonstrated a significant reduction in the number of eggs showing chromosomal abnormalities. In treated eggs, just 29% displayed this defect, compared to 53% in control eggs. While results for women over 35 were less conclusive, the team reported a similar trend.
The approach is promising because it addresses the primary cause of IVF failure and miscarriage in older women: egg quality. By restoring the protein levels to those found in younger eggs, the researchers aim to improve IVF success rates. According to Prof Schuh, this method could nearly halve the number of eggs with chromosomal abnormalities.
While more extensive trials are needed to confirm these findings, the potential benefits are substantial. The average birth rate for each embryo transferred in IVF treatment drops dramatically with female age, and the risk of chromosome disorders increases significantly. This new approach offers a glimmer of hope for women seeking fertility treatments beyond their mid-30s.
However, it is essential to note that this method would not extend fertility beyond menopause, when the egg reserve runs out. Regulators are being consulted about a potential clinical trial, and safety concerns have been identified.
The research has garnered praise from experts in the field, including Dr GΓΌneΕ Taylor of the University of Edinburgh, who described the findings as "really promising." If successful, this approach could revolutionize IVF success rates for older women, offering them more hope and control over their reproductive options.