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Journal ArticleDOI

Bone marrow cells adopt the phenotype of other cells by spontaneous cell fusion

TLDR
It is demonstrated that mouse bone marrow cells can fuse spontaneously with embryonic stem cells in culture in vitro that contains interleukin-3, which, without detailed genetic analysis, might be interpreted as ‘dedifferentiation’ or transdifferentiation.
Abstract
Recent studies have demonstrated that transplanted bone marrow cells can turn into unexpected lineages including myocytes, hepatocytes, neurons and many others. A potential problem, however, is that reports discussing such 'transdifferentiation' in vivo tend to conclude donor origin of transdifferentiated cells on the basis of the existence of donor-specific genes such as Y-chromosome markers. Here we demonstrate that mouse bone marrow cells can fuse spontaneously with embryonic stem cells in culture in vitro that contains interleukin-3. Moreover, spontaneously fused bone marrow cells can subsequently adopt the phenotype of the recipient cells, which, without detailed genetic analysis, might be interpreted as 'dedifferentiation' or transdifferentiation.

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Journal ArticleDOI

Integration of Embryonic Stem Cells in Metanephric Kidney Organ Culture

TL;DR: Embryonic stem cell technology may achieve the objective of obtaining a versatile cell culture system in which molecular interventions can be used in vitro and consequences of these perturbations on the normal kidney development program in vivo can be studied.
Book ChapterDOI

Functional implications of seizure-induced neurogenesis.

TL;DR: Evidence is presented that supports the hypothesis that new granule cells may not necessarily act to ameliorate seizures, and might even contribute to them, and that cognitive deficits following seizures might in part be due to new circuits that develop between new cells and the host brain.
Journal ArticleDOI

Failure of transplanted bone marrow cells to adopt a pancreatic beta-cell fate.

TL;DR: Although bone marrow cells expressing GFP under the ubiquitously expressed β-actin promoter efficiently engrafted the pancreas of normal and hyperglycemic mice, virtually all expressed CD45 and Mac-1/Gr-1, demonstrating that they adopt a hematopoietic rather than β-cell fate, a finding further substantiated by the complete absence of GFP + cells expressing insulin.
Journal ArticleDOI

Myogenic fusion of human bone marrow stromal cells, but not hematopoietic cells

TL;DR: It is suggested that marrow-derived cells contribute to myogenesis through fusion and that stromal cells are better fusion partners than hematopoietic cells.
Journal ArticleDOI

Long-term fate of neural precursor cells following transplantation into developing and adult CNS.

TL;DR: The long-term stability of neuronal-restricted precursors and glial- restricted precursor and the lack of adverse effects suggest that transplantation of lineage-restricted neural precursor cells can serve as an effective and safe replacement therapy for CNS injury and degeneration.
References
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Journal ArticleDOI

Multilineage Potential of Adult Human Mesenchymal Stem Cells

TL;DR: Adult stem cells isolated from marrow aspirates of volunteer donors could be induced to differentiate exclusively into the adipocytic, chondrocytic, or osteocytic lineages.
Journal ArticleDOI

Viable offspring derived from fetal and adult mammalian cells

TL;DR: The birth of lambs from differentiated fetal and adult cells confirms that differentiation of that cell did not involve the irreversible modification of genetic material required for development to term and reinforces previous speculation that by inducing donor cells to become quiescent it will be possible to obtain normal development from a wide variety of differentiated cells.
Journal ArticleDOI

Formation of Pluripotent Stem Cells in the Mammalian Embryo Depends on the POU Transcription Factor Oct4

TL;DR: It is reported that the activity of Oct4 is essential for the identity of the pluripotential founder cell population in the mammalian embryo and also determines paracrine growth factor signaling from stem cells to the trophectoderm.
Journal ArticleDOI

Muscle Regeneration by Bone Marrow-Derived Myogenic Progenitors

TL;DR: Transplantation of genetically marked bone marrow into immunodeficient mice revealed that marrow-derived cells migrate into areas of induced muscle degeneration, undergo myogenic differentiation, and participate in the regeneration of the damaged fibers.
Journal ArticleDOI

Multi-Organ, Multi-Lineage Engraftment by a Single Bone Marrow-Derived Stem Cell

TL;DR: It is shown that rare cells that home to bone marrow can LTR primary and secondary recipients, and this finding may contribute to clinical treatment of genetic disease or tissue repair.
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