Stem cells from umbilical cords in Skåne are improved with nanotubes. By cross-pollinating nanotechnology with stem cell biology, researchers are creating gentle methods to ensure that more cells perform better. Blood stem ...
Cell & Microbiology
16 hours ago
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17
To find out how many scientists a region needs to become a leader in a discipline, researchers at Complexity Science Hub tracked millions of scientists moving across the globe. Their result: there is no critical mass of scientists, ...
Economics & Business
Dec 29, 2022
1
126
Building tissues and organs is one of the most complex and essential tasks that cells must accomplish during embryogenesis. In this collective task, cells communicate through a variety of communication methods, including ...
Biochemistry
Dec 28, 2022
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178
Although Michelangelo's masterpiece "David" captured the magnificence of the human body—how exactly this exquisite body plan is established during human development has puzzled scientists for more than a century. This has ...
Cell & Microbiology
Dec 21, 2022
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46
How does an embryonic stem cell decide if it becomes a heart cell or a kidney cell? That's the question computational biologist Maria Mircea studied for her Ph.D. research. She looked at the inside of individual cells to ...
Cell & Microbiology
Dec 16, 2022
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5
Materials scientists at UNSW Sydney have shown that human pluripotent stem cells in a lab can initiate a process resembling the gastrulation phase—where cells begin differentiating into new cell types—much earlier than ...
Cell & Microbiology
Dec 15, 2022
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160
RIKEN researchers have imitated the formation of organs in the lab by "hacking" certain signaling pathways that guide the development of connective tissues in the embryo, which support the formation of the liver, gut and ...
Cell & Microbiology
Dec 14, 2022
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43
A beating heart, a complicated organ that pumps blood around the body of animals and humans, is not exactly something you associate with a Petri dish in a laboratory.
Evolution
Dec 12, 2022
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77
To save the northern white rhinoceros from extinction, the BioRescue team is racing to create lab-grown egg and sperm cells of the critically endangered subspecies. The team has now reported a milestone in Science Advances: ...
Plants & Animals
Dec 9, 2022
0
275
Stem cells are a biological wonder. They can repair, restore, replace, and regenerate cells. In most animals and humans these cells are limited to regenerating only the cell type they are assigned to. So, hair stem cells ...
Cell & Microbiology
Dec 8, 2022
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360
Stem cells are cells found in most, if not all, multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s. The two broad types of mammalian stem cells are: embryonic stem cells that are isolated from the inner cell mass of blastocysts, and adult stem cells that are found in adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. 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.
Stem cells can now be grown and transformed into specialized cells with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture. Highly plastic adult stem cells from a variety of sources, including umbilical cord blood and bone marrow, are routinely used in medical therapies. Embryonic cell lines and autologous embryonic stem cells generated through therapeutic cloning have also been proposed as promising candidates for future therapies.
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