New work by scientists in the U.S. and China shows how a fertilized egg cell, or zygote, hits "reset" so that the newly formed embryo can develop according to its own genetic program. The study was published July 17 in Nature.
Cell & Microbiology
Jul 20, 2023
0
34
In humans, a fertilized egg is no guarantee of reproductive success. Most embryos stop developing and perish within days of fertilization, usually because they have an abnormal number of chromosomes. Now, researchers at Columbia ...
Cell & Microbiology
Jul 19, 2022
0
47
One of the most common causes of infertility is failure of implantation—the process by which the early embryo attaches to the wall of the uterus. However, despite its critical importance, implantation and the changes it ...
Cell & Microbiology
Mar 11, 2022
0
55
Researchers from the Babraham Institute have today published their latest work in the journal Cell Stem Cell describing a new subset of human embryonic stem cells that closely resemble the cells present at the genomic 'wake ...
Molecular & Computational biology
Feb 24, 2022
0
40
The formation of the dorsal-ventral (DV) axis is one of the most important events during the early development of bilaterian animals. It is widely accepted that a conserved molecular logic (BMP2/4 and Chordin) regulates tissue ...
Evolution
Dec 28, 2021
0
101
In their effort to understand the very earliest stages of life and how they can go wrong, scientists are confronted with ethical issues surrounding the use of human embryos. The use of animal embryos is also subject to restrictions ...
Cell & Microbiology
Apr 23, 2021
1
16
Mature egg cells and early embryos do not generate their own RNA molecules—instead, they rely on stored maternal RNAs to synthesize their proteins. As the embryo develops, some of these RNAs become superfluous and need ...
Plants & Animals
Mar 10, 2021
0
16
A team of scientists from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) inGermany, Givskud Zoo–Zootopia in Denmark and the University of Milan in Italy succeeded in producing the very first African lionin-vitroembryos ...
Biotechnology
Jan 18, 2021
0
1097
A team led by UT Southwestern has derived a new "intermediate" embryonic stem cell type from multiple species that can contribute to chimeras and create precursors to sperm and eggs in a culture dish.
Cell & Microbiology
Dec 3, 2020
0
218
Proper embryonic development of the fruit fly Drosophila melanogaster is governed by patterns of protein activity bequeathed to the fertilized egg by its mother. While the embryo is still a single cell, the maternal cells ...
Cell & Microbiology
Jul 23, 2020
0
11
