The First Tissue-Engineered Airway Transplantation: 5-Year Follow-Up Results In 2008, the first transplantation of a tissue-engineered trachea in a human being was done to replace an end-staged left main bronchus with malacia in a 30-year-old woman. Researchers report five year follow-up results. [Lancet] Abstract

Resident Neural Stem Cells Restrict Tissue Damage and Neuronal Loss after Spinal Cord Injury in MiceCentral nervous system injuries are accompanied by scar formation. It has been difficult to delineate the precise role of the scar, as it is made by several different cell types, which may limit the damage but also inhibit axonal regrowth. Scientists showed that scarring by neural stem cell-derived astrocytes is required to restrict secondary enlargement of the lesion and further axonal loss after spinal cord injury. [Science] Abstract| Press Release

iPSC-Derived Neural Precursors Exert a Neuroprotective Role in Immune-Mediated Demyelination via the Secretion of LIF Scientists showed that mouse induced pluripotent stem cell (iPSC)-derived neural stem/precursor cells - when intrathecally transplanted after disease onset - ameliorate clinical and pathological features of experimental autoimmune encephalomyelitis, an animal model of multiple sclerosis. [Nat Commun] Abstract

The Enhancement of Bone Regeneration by Gene Activated Matrix Encoding for Platelet Derived Growth FactorResearchers developed and tested a non-viral gene delivery system for bone regeneration utilizing a collagen scaffold to deliver polyethylenimine-plasmid DNA (encoding platelet derived growth factor-B) complexes. [Biomaterials] Abstract

Interferon-?-Secreting Mesenchymal Stem Cells Exert Potent Antitumor Effect In VivoScientists tested whether mesenchymal stem cells continuingly secreting interferon-? (IFN?) can exert a persistent antitumor effect and eliminate the side effects associated with high clinical doses of recombinant IFN?. [Oncogene] Abstract

Mesenchymal Stem Cell Therapy Induces Glucocorticoid Synthesis in Colonic Mucosa and Suppresses Radiation-Activated T Cells: New Insights into MSC Immunomodulation In a rat model of radiation proctitis, investigators evidenced that a single mesenchymal stem cell (MSC) injection reduces colonic mucosa damages induced by ionizing radiation with improvement of the re-epithelization process for up to 21 days. [Mucosal Immunol] Abstract

Production and First-in-Man Use of T Cells Engineered to Express a HSVTK-CD34 Sort-Suicide GeneSuicide gene modified donor T cells can improve immune reconstitution after allogeneic hematopoietic stem cell transplantation, but can be eliminated in the event of graft versus host disease through the administration of prodrug. Researchers report the production and first-in-man use of mismatched donor T cells modified with a gamma-retroviral vector expressing a herpes simplex thymidine kinase (HSVTK):truncated CD34 suicide gene/magnetic selection marker protein. [PLoS One] Full Article| Press Release

The Therapeutic Effects of Human Adipose-Derived Stem Cells in Alzheimer's Disease Mouse ModelsIntravenously or intracerebrally transplanted human adipose-derived stem cells (hASCs) greatly improved memory impairment and neuropathology, suggesting that hASCs have a high therapeutic potential for Alzheimer's disease. [Neurodegener Dis] Abstract

Safety of Human Neural Stem Cell Transplantation in Chronic Spinal Cord InjuryResearchers assessed safety parameters for delayed transplantation of human central nervous system-derived neural stem cells (hCNS-SCns) by comparing hCNS-SCns transplantation in the subacute period, 9 days postinjury (DPI), versus the chronic period, 60 DPI, in contusion-injured athymic nude rats. [Stem Cell Transl Med] Abstract| Press Release

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