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New study casts doubt on heart regeneration in mammals

A recent study published in Stem Cell Reports has found no evidence of complete heart regeneration in newborn mice after apex resection. The researchers, led by Ditte Andersen, were unable to replicate the findings of a previous 2011 study that suggested complete regeneration was possible.

SourceCell Press·JournalStem Cell Reports·DateApr 3, 2014

Stem cell findings may offer answers for some bladder defects and disease

Researchers at UC Davis successfully coax laboratory cultures of human stem cells into the specialized, unique cells needed to repair a patient's defective or diseased bladder. The breakthrough provides a pathway to regenerate replacement bladder tissue for patients whose bladders are too small or do not function properly.

SourceUniversity of California - Davis Health·JournalStem Cells Translational Medicine·DateMar 21, 2014

New cell line should accelerate embryonic stem cell research

Scientists at the University of Washington have successfully created a line of human embryonic stem cells that can develop into various tissues. The new 'naive' cells retain their natural ability to differentiate into all types of human cells without artificial genes, opening up possibilities for regenerative medicine and transplantation.

SourceUniversity of Washington School of Medicine/UW Medicine·JournalProceedings of the National Academy of Sciences·DateMar 13, 2014

Transplanted human umbilical cord blood cells improved heart function in rat model of MI

Researchers found that human umbilical cord blood cells transplanted into rats with simulated myocardial infarction improved left ventricular heart function and preserved myocardial fiber structure. The study showed long-term benefits for the treated rats, suggesting a potential therapy for MIs.

Alzheimer's research team employs stem cells to understand disease processes and study new treatment

A team of researchers at Brigham and Women's Hospital has generated stem cells from skin biopsies of living family members with a genetic predisposition to early-onset Alzheimer's. The study found that the APPV7171 mutation alters amyloid-beta protein generation, Tau protein expression, and phosphorylation, providing new insights into ...

SourceBrigham and Women's Hospital·JournalHuman Molecular Genetics·DateMar 6, 2014

Turning back the clock on aging muscles?

Researchers have discovered a method for restoring strength to damaged skeletal muscles in the elderly using stem cell therapy. The treatment involves treating cells outside the body with a drug that prevents protein modification and culturing them on soft biomaterials, allowing aged cells to grow and self-renew.

SourceUniversity of Toronto·JournalNature Medicine·DateFeb 20, 2014

Histones may hold the key to the generation of totipotent stem cells

Researchers from RIKEN in Japan have identified a duo of histone proteins, TH2A and TH2B, that dramatically enhance the generation of induced pluripotent stem cells (iPSCs). The study demonstrates that these proteins function as substitutes for two Yamanaka factors and increase iPSC cell generation by twentyfold and speed up the process.

SourceRIKEN·JournalCell Stem Cell·DateFeb 6, 2014

Keeping stem cells pluripotent

Scientists have identified a key gene receptor and signaling pathway essential to maintaining human embryonic stem cells (hESCs) in an undifferentiated state. By blocking the WNT signaling pathway and its encoded receptor FZD7, researchers were able to keep hESCs in their pluripotent state.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateJan 13, 2014

Brittle-bone babies helped by fetal stem cell grafts

Researchers at Karolinska Institutet have successfully treated two babies in utero with mesenchymal stem cells, a type of connective tissue cell that can form and improve bone tissue. The treatment was administered to babies born with osteogenesis imperfecta, a rare congenital bone disease causing stunted growth and repeated fractures.

SourceKarolinska Institutet·JournalStem Cells Translational Medicine·DateDec 16, 2013

A*STAR scientists bring to light mechanism of drug for infections

Scientists at A*STAR's Singapore Immunology Network discovered the exact mode of action of plerixafor, a drug that stimulates immune responses in patients with neutropenia. The study found that the inhibition of CXCR4 by the drug plays a dual role, increasing neutrophil count in the blood and promoting retention in the bloodstream.

SourceAgency for Science, Technology and Research (A*STAR), Singapore·JournalJournal of Experimental Medicine·DateNov 14, 2013

Signal found to enhance survival of new brain cells

Scientists have found a critical mechanism to keep newborn neurons alive, which may help understand underlying causes of diseases like Alzheimer's and mental illness. The discovery suggests that parvalbumin-expressing interneurons release GABA, a chemical signal that promotes the survival of new brain cells.

SourceJohns Hopkins Medicine·JournalNature Neuroscience·DateNov 11, 2013