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Bone marrow stem cells improve heart function, study finds

A study led by Mayo Clinic researchers found that bone marrow-derived stem cells improved ejection fraction, a measure of the left ventricle's pumping ability, by 2.7% in patients with chronic heart failure. The most significant improvements were seen in younger patients and those with enriched CD34+ and CD133+ type of stem cells.

Influencing stem cell fate

Scientists at Northwestern University developed a powerful analytical method called nanocombinatorics to rapidly identify the chemical and physical structures that cue stem cells to become osteocytes. The researchers successfully directed stem cell differentiation without additional chemical cues, demonstrating better control than curr...

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateMar 6, 2012

UCLA scientists identify crucial cell and signaling pathway in placental blood stem cell niche

Researchers identified PDGF-B signaling in trophoblasts as a vital component of the placental niche, supporting blood stem cell generation and expansion without promoting differentiation. This discovery provides new insights into regulating EPO expression and governing the fates of blood stem cells during development.

Therapy targets leukemia stem cells

Research identifies SIRT1 as a key enzyme protecting leukemia stem cells from stress and driving cancer recurrence. Inhibiting SIRT1 selectively reduces CML stem cell survival and growth, offering a potential therapeutic target for treatment resistance.

SourceCell Press·JournalCancer Cell·DateFeb 13, 2012

Scientists make strides toward fixing infant hearts

Researchers at Rice University and Texas Children's Hospital have successfully derived vessel-forming stem cells from amniotic fluid, offering hope for repairing infant hearts. The breakthrough could lead to growing tissue patches using the infant's own cells, potentially replacing defective tissue with beating heart tissue.

SourceRice University·JournalTissue Engineering Part A·DateFeb 6, 2012

Oxford, Harvard scientists lead data-sharing effort

Researchers at University of Oxford and Harvard Stem Cell Institute have developed a common standard to describe and integrate large datasets from various fields, enabling better coordination of findings. The ISA Commons platform allows small research groups to store laboratory data without dedicated bioinformatics support.

SourceHarvard University·JournalNature Genetics·DateJan 29, 2012

UC Davis investigators achieve important step toward treating Huntington's disease

Researchers at UC Davis have developed a new approach using stem cells to deliver gene therapy specifically targeting the genetic abnormality found in Huntington's disease. By transferring inhibitory RNA sequences from donor cells into target neurons, they significantly decreased the synthesis of the abnormal huntingtin protein.

SourceUniversity of California - Davis Health·JournalMolecular and Cellular Neuroscience·DateJan 19, 2012

New microtweezers may build tiny 'MEMS' structures

Researchers have created new microtweezers capable of manipulating objects to build tiny structures, print coatings for advanced sensors, and grab live stem cell spheres. The tool enables the precision printing of chemical or protein dots onto microcantilevers, which can detect chemicals in air and water.

SourcePurdue University·JournalJournal of Microelectromechanical Systems·DateJan 17, 2012

Fish oil may hold key to leukemia cure

A Penn State research team has discovered a compound produced from fish oil that targets and kills leukemia stem cells, potentially leading to a cure for the disease. The compound, D12-PGJ3, selectively activates a gene in leukemia stem cells that programs their own death.

SourcePenn State·JournalBlood·DateDec 22, 2011

Scalable amounts of liver and pancreas precursor cells created using new stem cell production method

Researchers in Canada have developed a technique to produce large quantities of endoderm cells from human pluripotent stem cells, overcoming a key hurdle in regenerative medicine. The method allows for significant increases in effective cell production, enabling the potential for regenerative treatments for diabetes and liver disease.

SourceWiley·JournalBiotechnology and Bioengineering·DateDec 2, 2011

Bush embryonic stem cell lines different from newly derived cell lines

Researchers found that newly derived human embryonic stem cell lines have a better molecular signature than established lines, indicating higher quality and potentially better performance in disease modeling. The study suggests that maintaining the original state of X chromosome inactivation could be crucial for achieving optimal results.

SourceUniversity of California - Los Angeles Health Sciences·JournalHuman Molecular Genetics·DateNov 30, 2011

Researchers decode a puzzling movement disorder

Scientists at the University of Bonn have made a breakthrough in understanding Machado-Joseph disease by studying nerve cells derived from patients' skin cells. The research reveals that electrical activity in these cells triggers protein aggregation, explaining why the disease affects only nerve cells.

SourceUniversity of Bonn·JournalNature·DateNov 24, 2011

Discovery of new muscle repair gene

Researchers have discovered a new muscle repair gene, MEGF10, which plays a crucial role in the fusion process of satellite cells. The findings provide accurate genetic testing and diagnosis for devastating conditions affecting muscle function, enabling hope for families affected by progressive muscle disease.

SourceUniversity of Leeds·JournalNature Genetics·DateNov 20, 2011

UCLA stem cell researchers uncover mechanism that regulates human pluripotent stem cell metabolism

Researchers found that pluripotent stem cells respire at the same level as differentiated body cells but produce very little energy. UCP2 protein blocks respiration substrates from entering mitochondria, allowing glycolysis to dominate. The study suggests that changes in metabolism drive cell differentiation.