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Tag: "embryonic" at biology news

Wisconsin scientists grow critical nerve cells

...s of trial and error, scientists have coaxed human embryonic stem cells to become spinal motor neurons, critica...s have long believed in the therapeutic promise of embryonic stem cells with their ability to replicate indefinitely and develop into any of the 220 different ty...

Spleen may be source of versatile stem cells

.... In mammals,Hox11 is a controller of key steps in embryonic development - includingthe formation of the spleen - but it was not known to be present inadults under normal circumstances. In some other animals, however, theprotein has an intriguing function: when creatures like newtsregenerate a lost limb or tai...

Priming embryonic stem cells to fulfill their promise

...ecise mixof proteins that optimally prompted mouse embryonic stem cells to beginthe differentiation process int... surfaceof gel-coated slides, and then added mouse embryonic stem cells to theniches. After the cells were allowed to grow, the researchers assayedtheir progress...

Neuronal 'traffic jam' marks early Alzheimer's disease

...nvolvement in Alzheimer's pathology by using human embryonic stem cells to differentiate into neurons in culture. Their goal is to alter those neurons genetically by introducing mutations know to cause Alzheimer's disease in people, to then test for transport defects, and then study whether those defects produ...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...l NatureMedicine, the researchers found that human embryonic stem cells,including those currently approved for ...Instudies with one of the federally approved human embryonic stem celllines, the investigators determined that the Neu5Gc is incorporated bythe stem cells when t...

Newly-discovered class of genes determines ?and restricts ?stem cell fate

...he researchers found that Pax3, a gene critical in embryonic development of melanocytes ?cells that make and st... "Our findings told us that a recapitulation of an embryonic program is occurring in resident stem cells in adult skin," explains Jon Epstein, MD, Professor of M...

Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates

...ese researchers previously demonstrated that mouse embryonic stemcells can differentiate into neurons when cult...ple andefficient, were recently applied to primate embryonic stem cells andresulted in the generation of large numbers of DA neurons. In theircurrent JCI study, ...

Cytoplasm affects the number of vertebrae in carp-goldfish clones

...ate that a so-called "segmentation clock" early in embryonic development is controlled by the egg cytoplasm. Thus the egg cytoplasm of the recipient goldfish directs segmentation of the body and hence the number of vertebrae. Common carp have 33 to 36 vertebrae in their backbones, while goldfish have 26 to 28...

The transparent organism: EMBLEM and Carl Zeiss give labs a unique look at life

...cesses like the formation of eyes and the brain in embryonic fish or other model organisms. The presentation of SPIM at scientific conferences has generated a flood of requests for the instrument. "We were extremely pleased to have found Carl Zeiss as an excellent partner to translate this technology into a ...

Scientists rid stem cell culture of key animal cells

...ted a recipe that allows researchers to grow human embryonic stem cells in the absence of mouse-derived "feeder... step." Working with three of WiCell's five human embryonic stem cell lines, Xu and his team explored the molecular interactions within the stem cell growth med...

UCSD researchers maintain stem cells without contaminated animal feeder layers

The growth and maintenance of human embryonic stem cells in the absence of contaminated animal p... called activin A are capable of maintaining human embryonic stem cells in a continuous undifferentiated state, ready for research. Undifferentiation means the s...

Placenta Is A Rich Source Of Blood Stem Cells

...Cancer Institute report a surprising finding about embryonic development: the blood system begins to form not o...ther sites where blood stem cells are found during embryonic development, such as the liver, the stem cells in the placenta can increase in number without giving...

Researchers trace evolution to relatively simple genetic changes

...he ectodysplasin pathway, an important part of the embryonic development process. The human disorder, one of th...s used; how, when and where it is activated during embryonic growth. Also, to be sure they're working with the correct gene, the research team used genetic engi...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...he ectodysplasin pathway, an important part of the embryonic development process. The human disorder, one of th...s used; how, when and where it is activated during embryonic growth. Also, to be sure they're working with the correct gene, the research team used genetic engi...

Devising Nano Vision for an Optical Microscope

...th of visible light. In a preliminary test of the embryonic technique, NIST scientists used violet light with a wavelength of 436 nanometers to image features as small as 40 nanometers, about five times smaller than possible with a conventional optical microscope. Roughly speaking, such a feat is akin to pic...

NJIT Presidential Award winner takes stem cell research another step

...o the controversy over the ethical implications of embryonic stem-cell research, in her case, is moot. An adult stem cell is an undifferentiated cell that builds and maintains tissues and organs, and which can renew itself through cell division. Stem cells are harvested from bone marrow, umbilical cords, the b...

UCSD team discovers specialized, rare heart stem cells in newborns

...etic methods to tag the progenitor cells in living embryonic tissue and in the newborn heart of mice. With thes...ing isl1+ cardiac progenitors from mouse and human embryonic stem cell systems during cardiogenesis." "We think that these cells normally play an important role...

Hirsute Or Hairless? Two Proteins May Spell The Difference

..., overlapping signaling pathways from two adjacent embryonic cell layers—the epithelium and the mesenchyme—dire...e embryos, they saw a spike in Snail expression on embryonic day 17.5, coinciding with hair bud formation, enhanced cell proliferation, and the down-regulation o...

UCLA launches $20 million stem cell institute to investigate HIV, cancer and neurological disorders

...tute for Stem Cell Biology and Medicine to conduct embryonic and adult stem cell research that may lead to bett...versities, UCLA has long been engaged in adult and embryonic stem cell research with activities in areas ranging from the AIDS Institute to the Brain Research In...

Researchers devise way to mass-produce embryonic stem cells

... enough to respond to increasing demands for human embryonic stem cells, said Shang-Tian Yang, a professor of c...es forbid the federal funding of research on human embryonic stem cell lines that aren't listed on the National Institutes of Health's Human Embryonic Stem Cell ...

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