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The fluorescent inexperienced tubes are the beginnings of veins, capillaries and lymphatic drainages—engineering pre-vascularized tissue like this might assist heal extreme burn accidents. Credit score: Michigan Tech, Feng Zhao Full thickness pores and skin grafts are the golden normal for treating burn wounds. However most pores and skin grafts for extreme burns require a donor, and for big or sophisticated damage websites, a full thickness pores and skin graft is difficult to return by. Break up thickness pores and skin grafts (STSG) that use tissue from the affected person could also be an answer -- however not by themselves. By combining STSG with a specifically engineered sheet of stem cells, researchers from Michigan Tech and the First Affiliated Hospital of Solar Yat-sen College in Guangzhou, China exhibit an improved pores and skin graft course of. Their...

"In our preclinical assessments of stem cell-derived dopamine neurons we noticed that the outcome in animal models varied dramatically, even though the cells were very similar at the time of transplantation. This has been frustrating and puzzling, and has significantly delayed the establishment of clinical cell production protocols," says Malin Parmar, who led the study conducted at Lund University as part of the EU network NeuroStemcellRepair . The Lund experiments use modern global gene expression studies to better understand the path from a stem cell to a dopamine neuron. The data has been generated in close collaboration with a team of scientists at Karolinska Institute lead by Professor Thomas Perlmann, and is closely linked with a second study from the same cluster of scientists. The second study sheds new light on how dopamine neurons are formed during development, and what makes them different from other similar and neighbouring neurons. This new insight has ena...

Theresa Lu, MD, PhD. Credit score: Hospital for Particular Surgical procedure The prognosis for sufferers recognized with scleroderma -- an autoimmune illness characterised by fibrosis of the pores and skin -- is just not usually a rosy one. With restricted therapy choices accessible, these affected by the dysfunction can face disabling hardening and tightening of their pores and skin. Scl eroderma also can have an effect on the blood vessels, lungs and different inner organs. New and ongoing analysis at Hospital for Particular Surgical procedure in New York Metropolis has recognized a attainable mechanism behind the fibrosis that happens in scleroderma -- a mechanism that will someday result in a therapy for the illness. Revealed within the  Journal of Scientific Investigation  on October 10, the research stories that in laboratory analysis, a inhabitan...

The finding has potential to lead to a treatment to prevent or limit ovarian cancer in women at high risk. The researchers looked at EGFL6, a growth factor that drives cell growth and regulates stem cells. It's best known for its role in hair follicles. Researchers suspected it might also play a role in ovarian cancer stem cells. When they triggered EGFL6 in ovarian cancer cells, it stimulated the cancer to grow two to three times faster. This held in both cell lines and in mice. When researchers eliminated the EGFL6, tumors grew very poorly, about four times more slowly. Results appear in  Cancer Research . Researchers found that EGFL6 acts specifically on cancer stem cells. Cancer stem cells are believed to fuel the growth and spread of cancer. They are often resistant to current chemotherapy and radiation treatments. Teaming with engineers, researchers used microfluidic chambers to look at how individual cells behaved. They found EGFL6 caused the cancer stem cells to d...

The study findings provide a drug target for the disease, said lead study author Jayakrishnan Nandakumar, assistant professor of molecular, cellular and developmental biology at the University of Michigan. The mutation compromises the function of an enzyme known as telomerase , which fuels stem cell division, he said. Stem cells must divide to repair old tissue. This mutation, which occurs in the telomere protein TPP1, causes stem cells to slow or stop dividing in people with this rare, incurable disease. This can cause tissue breakdown, premature aging, bone marrow failure, cancer and even death. Nandakumar and his U-M colleagues are believed to be the first to use genome editing technology called CRISPR/CAS9 to introduce a dyskeratosis congenita mutation into human cells. This gene editing technology is often described as a pair of molecular scissors, because it cuts DNA in precise locations to allow for additions, deletions and replacements of DNA near the cut. The acronym...

When information in our genes is used, for example to build a protein, it is first translated to messenger-RNA which functions as a blueprint for the protein. Our cells also contain non-coding, short, RNA sequences that do not contribute to the formation of proteins and whose functions are partly unknown. The best known of these is micro RNA (miRNAs), which can interact with the messenger RNA, and thereby regulate genes and cell function. Researchers at Karolinska Institutet have now mapped the presence of short RNA-sequences in an individual cell. Previous research on short RNA molecules is based on analysis of many cells simultaneously, making it difficult to study the precise function. "Our knowledge of the function of short RNA molecules is quite general. We have a picture of the general mechanisms, but it is less clear what specific role these molecules play in different types of cells or diseases," says Rickard Sandberg, professor at the Department of Cell and Mol...