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Neural stem cells are long-lived

Researchers have discovered that neural stem cells in adult mice can respond to Shh signaling and give rise to other neural cell types, including glial cells. The study also found that quiescent stem cells can self-renew after a year, with implications for tissue repair and cancer progression.

Adult human neural stem cell therapy successful in treating spinal cord injury

A new study by UCI researchers shows that adult human neural stem cells can differentiate into new oligodendrocyte cells and neurons, restoring myelin and improving motor function in mice with spinal cord injuries. The treatment also leads to behavioral improvements, including the ability to step using hind paws.

SourceUniversity of California - Irvine·JournalProceedings of the National Academy of Sciences·DateSep 19, 2005

A novel method to propagate stem cells

Researchers have created a novel method to propagate mouse brain stem cells, which can either multiply without differentiating or become normal brain cells at the flip of a genetic switch. The technique combines epidermal growth factor and fibroblast growth factor to promote cell growth, enabling scientists to study basic properties an...

SourcePLOS·JournalPLOS Biology·DateAug 15, 2005

For first time, brain cells generated in a dish

Researchers at the University of Florida have successfully generated brain cells in a dish, a breakthrough that could lead to new treatments for neurological disorders. The discovery identifies the true stem cell, which can be used to produce a limitless supply of brain cells to potentially heal damaged brain function.

SourceUniversity of Florida·JournalProceedings of the National Academy of Sciences·DateJun 13, 2005

Insulin-producing cells from brain cursors

Researchers at Stanford University have successfully differentiated human neural progenitor cells into insulin-producing cells that can respond to glucose. These cells were then transplanted into immunocompromised mice and produced human insulin when stimulated by glucose, paving the way for potential treatment of type I diabetes.

SourcePLOS·JournalPLOS Medicine·DateApr 25, 2005

Stem cell therapy for spinal injury

Researchers at Karolinska Institutet have developed a stem cell therapy that improves motor function and sensory function below spinal injury levels. The treatment inhibits the development of astrocytes, which stimulate pain axon growth, allowing for greater production of oligodendrocytes and myelin-coated nerve fibers.

SourceSwedish Research Council·JournalNature Neuroscience·DateFeb 13, 2005

UCSD-Salk team show protein's gene-silencing role in development of nervous system

Researchers at UCSD and Salk Institute have discovered that small carboxyl-terminal domain phosphatases (SCPs) play a crucial role in the maintenance of neural stem cells and silencing of neuronal genes. This finding suggests a way to expand the pool of neuronal stem cells, potentially leading to new treatments for neurological disorders.

Promise of stem cells amplified

Scientists have successfully used stem cells to restore movement in paralyzed rats by transplanting oligodendrocytes, a type of cell that insulates nerve signals. Additionally, researchers have delivered GDNF, a factor aiding neuron survival, to patients with Parkinson's and Huntington's diseases using genetically modified astrocytes.

Could skin cells become brain cells?

Researchers have successfully generated nerve precursor cells from adult skin cells using a two-step process involving soluble agents called growth factors. This breakthrough raises the possibility of generating nerve cells from an individual's own skin cells, overcoming issues of rejection.

SourceThe Lancet_DELETED·JournalThe Lancet·DateJul 8, 2004

DHEA boosts growth rate of human neural stem cells

Researchers at the University of Wisconsin-Madison have found that DHEA significantly increases the division of human neural stem cells, leading to increased neurogenesis. The study's findings provide direct evidence of DHEA's effects on critical human cells, shedding light on the hormone's potential benefits and risks.

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateFeb 17, 2004

Stem cell death gives clue to brain cell survival

Researchers at UGA have identified a lipid-protein duo causing massive stem cell death during brain development, but also hinting at potential recovery mechanisms for devastating diseases like Alzheimer's and Parkinson's. The study reveals that this 'deadly couple' leads to the survival of cells destined to form neurons.

SourceUniversity of Georgia·JournalJournal of Cell Biology·DateJul 31, 2003

A two-lane road to ruin

Granzyme A, a double-headed protease, is assembled into a dimer with identical catalytic domains connected by a covalent disulfide bond. This unique configuration enables the enzyme to recognize specific sequences and activate cell death machinery in tumor cells and virally infected cells.

SourceMax-Planck-Gesellschaft·JournalNature Structural & Molecular Biology·DateJul 4, 2003

Donor cells from new source ignored by the immune system

Kansas State University researchers successfully transplanted umbilical cord matrix stem cells from a pig into the brain of a live rat without triggering an immune response. The recipient cells survived for over six weeks and began to differentiate into nervous system cells, suggesting a new therapeutic option for Parkinson's disease.

SourceKansas State University·JournalExperimental Neurology·DateJun 18, 2003