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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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Journal ArticleDOI

Bone marrow cell-mediated cardiovascular repair: potential of combined therapies.

TL;DR: The clinical potential of BMC transplantation alone and in combined therapy that aims to restore organ vascularization and function are discussed and the mechanisms of mobilization, differentiation and incorporation of BMCs are considered.
Journal ArticleDOI

Differentiation of putative hepatic stem cells derived from adult rats into mature hepatocytes in the presence of epidermal growth factor and hepatocyte growth factor.

TL;DR: Oval cells can differentiate into cells with the morphological, phenotypic and functional characteristics of hepatocytes, and this 2-step induction procedure could provide an abundant source of hepatocyte for cell transplantation and tissue engineering.
Journal ArticleDOI

Cell therapy for disorders of bone

TL;DR: Although the risks of systemic transplantation must be carefully considered, cell therapy for disorders of bone carries the potential for long-term and potentially curative benefits, justifying further intensive research on this important treatment option.
Journal ArticleDOI

Bone marrow stem cells do not repopulate the healthy upper respiratory tract.

TL;DR: The nasal epithelium of female patients up to 15 years after gender‐mismatched bone marrow transplantation is examined, and donor‐derived epithelial cells were sought with a combination of Y‐chromosome fluorescence in situ hybridization and anti‐cytokeratin antibody.
Journal ArticleDOI

Evolving concepts in cell therapy of liver disease and current clinical perspectives.

TL;DR: A recent review summarizes liver cell transplantation from a bench-to-bedside perspective as discussed by the authors, showing that successful liver cell therapy will require better understanding of the mechanisms governing liver regeneration and of their implication in cell transplant.
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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