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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

Primary liver carcinoma of intermediate (hepatocyte-cholangiocyte) phenotype.

TL;DR: Intermediate carcinoma may be a distinct type of primary liver carcinoma, morphologically and phenotypically intermediate between HCC and CC, which originates from transformed hepatic progenitor cells.
Journal ArticleDOI

Biology and clinical applications of mesenchymal stem cells

TL;DR: The question of the host response to implanted MSCs is critical as these cells are being evaluated in clinical applications and several aspects to the implanted cell-host interaction need to be addressed as the authors attempt to understand the mechanisms underlying stem cell therapies.
Journal ArticleDOI

Marrow-derived cells populate scaffolds composed of xenogeneic extracellular matrix.

TL;DR: ECM scaffolds facilitate the recruitment of marrow-derived cells into sites of remodeling and the composition of bioscaffolds affects the cellular recruitment pattern during tissue repair.
Journal ArticleDOI

Hair follicle dermal cells repopulate the mouse haematopoietic system

TL;DR: The identification of the hair follicle as a source of extramedullary haematopoietic stem cell activity makes it an attractive potential source for blood stem cell therapeutics and highlights its value as a model system in adult stem cell biology.
Journal ArticleDOI

Cell competition leads to a high level of normal liver reconstitution by transplanted fetal liver stem/progenitor cells.

TL;DR: It is shown for the first time that cell-cell competition, a developmental paradigm, can be used to replace functional organ tissue in an adult mammalian species under nonselective conditions and may serve as a strategy for tissue reconstitution in a wide variety of metabolic and other disorders involving the liver, as well as other organs.
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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