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Journal ArticleDOI

Bone marrow as a potential source of hepatic oval cells.

TLDR
A stem cell associated with the bone marrow has epithelial cell lineage capability and a proportion of the regenerated hepatic cells were shown to be donor-derived.
Abstract
Bone marrow stem cells develop into hematopoietic and mesenchymal lineages but have not been known to participate in production of hepatocytes, biliary cells, or oval cells during liver regeneration. Cross-sex or cross-strain bone marrow and whole liver transplantation were used to trace the origin of the repopulating liver cells. Transplanted rats were treated with 2-acetylaminofluorene, to block hepatocyte proliferation, and then hepatic injury, to induce oval cell proliferation. Markers for Y chromosome, dipeptidyl peptidase IV enzyme, and L21-6 antigen were used to identify liver cells of bone marrow origin. From these cells, a proportion of the regenerated hepatic cells were shown to be donor-derived. Thus, a stem cell associated with the bone marrow has epithelial cell lineage capability.

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Citations
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Journal ArticleDOI

Ploidy reductions in murine fusion-derived hepatocytes

TL;DR: It is proposed that ploidy reductions lead to the generation of genetically diverse daughter cells with about 50% reduction in nuclear content, which increases liver diversity and may increase the likelihood of oncogenesis.
Journal ArticleDOI

Adult stem cells: hopes and hypes of regenerative medicine.

TL;DR: The use of adult stem cells, which are multipotent or unipotent, can be at present a more achievable strategy and is discussed in the light of current understanding of stem cell biology.
Journal ArticleDOI

In vivo and in vitro differentiation of myocytes from human bone marrow–derived multipotent progenitor cells

TL;DR: For the first time, it is demonstrated that treating cells with this condition prior to intramuscular injection increased efficiency of engraftment and differentiation in vivo.
Journal ArticleDOI

Bone marrow mesenchymal cells: how do they contribute to tissue repair and are they really stem cells?

TL;DR: Recent evidence suggests that a very small subpopulation of cells that assume a repair function with the ability to differentiate into trilineage cells resides among human MSCs and effective utilization of such cells is expected to improve the repair effect of MSCS.
Journal ArticleDOI

Hepatocytes, Rather than Cholangiocytes, Can Be the Major Source of Primitive Ductules in the Chronically Injured Mouse Liver

TL;DR: It is shown that hepatocytes, rather than cholangiocytes, are the major source of cells for the primitive ductules formed in response to chronic liver damage, and activation of the Notch-Hes1 signaling axis is important for conversion of hepatocytes into primitive ductular cells in chronically injured liver.
References
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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 Article

In vivo differentiation of rat liver oval cells into hepatocytes.

TL;DR: The data indicate that oval cells can differentiate to hepatocytes and may have an important physiological function as a source of major serum proteins when hepatocytes are unable to synthesize these proteins.
Journal ArticleDOI

Presence of hematopoietic stem cells in the adult liver

TL;DR: The data obtained from the mouse study strongly suggest that hematopoietic stem cells residing in the donor liver are responsible for mixed chimerism and maintenance of tolerance after liver transplantation.
Journal Article

Expression of stem cell factor and its receptor, c-kit, during liver regeneration from putative stem cells in adult rat.

TL;DR: The SCF/c-kit system may, possibly in combination with other growth factor/receptor systems, be involved in the early activation of the hepatic stem cells as well as in the expansion and differentiation of oval cells.
Journal ArticleDOI

Variable chimerism, graft-versus-host disease, and tolerance after different kinds of cell and whole organ transplantation from Lewis to brown Norway rats.

TL;DR: Both the GVHD propensity and tolerogenicity in these experiments were closely associated with recipient tissue chimerism 30 and 100 days after the experiments began, and these observations provide guidelines that should be considered in devising leukocyte augmentation protocols for human whole organ recipients.
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