Embryonic Development News and Research

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Embryonic development or embryogenesis is the process by which the embryo is formed and develops. It starts with the fertilization of the ovum, egg, which, after fertilization, is then called a zygote. The zygote undergoes rapid mitotic divisions, the formation of two exact genetic replicates of the original cell, with no significant growth (a process known as cleavage) and cellular differentiation, leading to development of an embryo.

Overlapping signals in embryo help get the backbone right

A major step in the development of the vertebrate embryo - the establishment of a back that morphs into a brain, spinal cord and muscles - turns out to be so important that the body uses at least three signals to make sure it happens properly.

9 Mar 2005

Scientists gain new insight into DiGeorge syndrome

A collaboration of European scientists has uncovered new insight into the most common chromosomal microdeletion syndrome in humans.

28 Feb 2005

Researchers identify new genes necessary for embryonic development

Researchers at New York University and the medical schools at Harvard and Yale universities have identified new genes necessary for embryonic development, according to findings published in the latest issue of Genome Research.

31 Jan 2005

Theory on evolution of essential genes is overturned

A gene passed on by fathers that plays a vital role in helping fertilised eggs to develop into adults has helped scientists overturn the idea that essential genes have always been part of the genetic makeup of a species.

26 Jan 2005

Discovery offers promise for treatment of age-related hearing loss

Researchers have discovered that deletion of a specific gene permits the proliferation of new hair cells in the cochlea of the inner ear -- a finding that offers promise for treatment of age-related hearing loss. This type of hearing loss is caused by aging, disease, certain drugs, and the cacophony of modern life. It is the most common cause of hearing loss in older people.

13 Jan 2005

Mutated gene may provide better idea of how cancer develops and progresses

Scientists are taking the first steps to find out how a gene that is mutated in many cancer cells functions in healthy cells.

6 Jan 2005

Stem cells' repair skills could be link to cancer

Johns Hopkins researchers say there is growing evidence that stem cells gone awry in their efforts to repair tissue damage could help explain why long-term irritation, such as from alcohol or heartburn, can create a breeding ground for certain cancers.

23 Nov 2004

Researchers have identified a protein that transports the essential nutrient boron into cells

Researchers at UT Southwestern Medical Center at Dallas have identified a protein that transports the essential nutrient boron into cells, where it is important for cell growth and bone development. The findings are in the Nov. 5 edition of the journal Molecular Cell and are online.

5 Nov 2004

Discovery affirms potential of stem cells for the development of possible therapies for spinal cord injury and nervous system disorders

Researchers at The Hospital for Sick Children (Sick Kids) have shown that stem cells found in adult skin retain their embryonic capability of making many types of cells.

1 Nov 2004

Significant steps to fight a deadly childhood muscle cancer

University of Utah scientists have taken significant steps to fight a deadly childhood muscle cancer by identifying some of the genetic events that cause the disease and then engineering mice that develop the tumors.

16 Oct 2004

Marijuana use may increase the risk of ectopic (tubal) pregnancies

It is not known whether drugs that block or, in the case of marijuana, over-stimulate the CB1 receptor can cause ectopic pregnancy in humans. However, "our results raise caution for women of reproductive ages regarding the chronic use of marijuana for recreation or pain alleviation," the researchers concluded.

27 Sep 2004

Discovery of key molecular step which allows cancer cells to move to different parts of the body

Researchers at The University of Texas M. D. Anderson Cancer Center have figured out a key molecular step by which a cancer cell can unhook itself from the mesh weave of other cancer cells in a tumor, and move away to a different part of the body - the process, known as metastasis, that makes cancer so dangerous.

27 Sep 2004

Scientists have corrected a flaw in cancer cells that lets them evade the normal cell-death process

Scientists at Dana-Farber Cancer Institute have corrected a flaw in cancer cells that lets them evade the normal cell-death process, and as a result they eliminated leukemia cells from mice.

21 Sep 2004

Researchers have discovered a possible way to distinguish lethal from localized prostate cancers

If future studies show their test -- measuring the level of activity of a signaling pathway called Hedgehog -- can predict which prostate cancers will spread, the results could revolutionize decision making processes for prostate cancer patients, the researchers say.

13 Sep 2004

Research crucial in determining what gene mutations might lead to congenital cardiovascular defects

According to the American Heart Association, congenital cardiovascular defects, such as congenital heart disease (CHD), are present in about one percent of live births and are the most common malformations in newborns.

9 Sep 2004

Nobox gene key to proper egg development

While humorists ponder the old saw about the chicken and the egg, researchers at Baylor College of Medicine focus on the egg, which would not exist without the master geneNobox, which they describe in this week’s issue of the journal Science.

27 Aug 2004

Researchers using light to control genes and better understand the role of certain genes in embryonic development

As our understanding of biology increases, the tools of research become almost as important as the researchers wielding them. Currently, one of the major obstacles to research is actually getting inside of cells and tissue to see what is going on as it happens.

25 Aug 2004

Research sheds shed light on a common cause of miscarriage in humans

Top poker players know that the face mirrors the brain. Specialists in embryonic development wouldn’t disagree. In fact, because the same clumps of primordial cells mold the final features of both, a close look at a child’s face can often yield clues about less visible problems within the skull

20 Aug 2004

Chromosomal chaos in early embryonic development is linked to abnormalities in cytokinesis and spindle formation

Abnormalities in the spindles (the bi-polar thread like structures that link and pull the chromosomes during cell division) of human embryos before implantation may be the primary reason for many of the chromosome defects observed in early human development

29 Jun 2004

Zebrafish research may help determine what causes certain birth defects

Description of dozens of mutations that will help determine the earliest steps in vertebrate development, which take the spherical embryo to a complex creature

24 Jun 2004