Sentences with phrase «stem cells in these organisms»

So far researchers have not been able to isolate or identify stem cells in these organisms.

Not exact matches

Such cells are found in organisms that can divide and differentiate into specialized cell types and can self - renew to produce more stem cells.

No embryo has been generated, no organism «cloned» if ANT - OAR succeeds in its goal of producing nothing other than pluripotent stem cells.

This method would also enable them to follow potential aging processes that occur in blood stem cells in detail as they occur naturally in a living organism.

«We have now developed the first model where we can observe the development of a stem cell into a mature blood cell in a living organism.»

Organisms like zebra fish readily dedifferentiate cells near the injury, undergoing a cellular age regression in which «they form something like stem cells, although they are not quite the same as stem cells,» says Keating.

It performs this critical service in embryonic development, growing organisms and in a few specialized adult cell lines, including stem cells.

Laux's team studied the stem cells in the model organism of the Arabidopsis plant, or rock cress, which is part of the Brassicaceae family of plants, including mustard and cabbage.

Apart from advancing our understanding of how plants regulate their growth and shape, this research presents new questions for stem cell researchers in regards to cell size checkpoints and their importance during organism development.

«In other words, the activity of stem cells needs to be precisely regulated to meet the needs of an organism.

Scientists from the Spanish National Cancer Research Centre (CNIO) have discovered that NANOG, an essential gene for embryonic stem cells, also regulates cell division in stratified epithelia — those that form part of the epidermis of the skin or cover the esophagus or the vagina — in adult organisms.

Schaal, dean of the faculty of arts and sciences at Washington University in St. Louis, called for more effective communication and public engagement by scientists in explaining their work, both to policy makers and to the general public, across a range of topics — climate change, evolution, stem cells, and use of genetically modified organisms (GMOs) in agriculture.

«To really understand how one cell becomes totipotent [a stem cell] and then becomes something else, you need to know how it integrates in an organism,» Miglietta said.

The sequencing and statistical techniques the team developed can also be used by others studying regulation of stem cells in other tissues, organ systems or organisms, he said.

In contrast, embryonic stem cells are pluripotent which means they can make all the cells of the organism, but typically not the extra-embryonic tissue.

Their capacity to divide, differentiate and repopulate tissues, which typically declines with an organism's advancing age, resembled those of their stem - cell counterparts in younger animals.

Just a few kinds of signals control the fates of cells that either maintain their stem cell state, divide or differentiate in a developing organism.

A full realisation of the medical potential of stem cells for human health will likely depend on a reinforcement of, and development of a whole continuum of studies ranging from those in vivo using model organisms, to cell - based therapies in the clinic.

The model organism offers a way to better understand stem cell - driven regeneration processes, an important step in regenerative medicine and the promise of therapies to repair or replace damaged human tissue.

«It's really interesting to be embedded within the context of the Thomson lab and in the whole stem cell milieu, and understanding how this axolotl might be employing the same pathways that are present in other organisms — and possibly people,» Nelson says.

We will use the fruitfly Drosophila melanogaster as an experimental model, as this tractable organism experiences age - related changes of their stem cells that are similar to the ones observed in mammals.

In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin, or intestinal tissues.

We will mine and exploit information from studies and screens in model organisms, but our primary focus is on the paradigmatic mammalian stem cell systems - haematopoiesis and epithelia in vivo, and embryonic and neural stem cells in vitro.

In animal systems, pluripotency can be verified through direct means: pluripotent stem cells can be introduced into an developing embryo and thus the cellular developmental potential of any given in vitro preparation can be directly determined by observing the amount of chimaerism or viability of organisms partially or fully derived from in vitro stem cellIn animal systems, pluripotency can be verified through direct means: pluripotent stem cells can be introduced into an developing embryo and thus the cellular developmental potential of any given in vitro preparation can be directly determined by observing the amount of chimaerism or viability of organisms partially or fully derived from in vitro stem cellin vitro preparation can be directly determined by observing the amount of chimaerism or viability of organisms partially or fully derived from in vitro stem cellin vitro stem cells.

By studying the planarian we hope to understand how stem cells are regulated to produce missing tissues and organs in the context of a whole organism.

But because stem cells can become any kind of tissue, human - animal research in the field of «regenerative medicine» raises greater ethical issues and adds, for some, a visceral unease about the organism that could be produced.

Since regeneration recapitulates in broad strokes embryonic development, during which a complex multi-cellular organism develops from a handful of embryonic stem cells, the researchers began by comparing gene expression patterns between the two processes.

Currently, stem cell research focuses on renewal and differentiation of stem cells and the molecular mechanisms of its pluripotency - or their ability to develop into any type of cell - using human embryonic stem cells, induced pluripotent stem cells, and stem cells in simpler organisms.

Trying to find the most basic answer to how stem cells «know» to differentiate to different cells in an organism is probably as difficult as how molecules combine to form a living organism.