Allogeneic and autologous marrow transplants are routinely used to correct a wide variety of diseases. In addition, autologous marrow transplants potentially provide opportune means of delivering genes in transfected, engrafting stem cells. However, relatively little is known about the mechanisms of engraftment in transplant recipients, especially in the nonablated setting and with regard to cells not of hemopoietic origin. In particular, this includes stromal cells and progenitors of the osteoblastic lineage. We have demonstrated for the first time that a whole bone marrow transplant contains cells that engraft and become competent osteoblasts capable of producing bone matrix. This was done at the individual cell level in situ, with significant numbers of donor cells being detected by fluorescence in situ hybridization in whole femoral sections. Engrafted cells were functionally active as osteoblasts producing bone before being encapsulated within the bone lacunae and terminally differentiating into osteocytes. Transplanted cells were also detected as flattened bone lining cells on the periosteal bone surface.
Cells Capable of Bone Production Engraft from Whole Bone Marrow Transplants in Nonablated Mice
S. Nilsson,M. Dooner,H. Weier,B. Frenkel,J. Lian,G. Stein,P. Quesenberry
Published 1999 in Journal of Experimental Medicine
ABSTRACT
PUBLICATION RECORD
- Publication year
1999
- Venue
Journal of Experimental Medicine
- Publication date
1999-02-15
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- bone lining cells
Flattened cells that cover quiescent bone surfaces, including the periosteal surface.
Aliases: lining cells
- bone matrix
The mineralized extracellular material produced by osteoblasts during bone formation.
Aliases: bone
- fluorescence in situ hybridization
A cell- and tissue-level detection method used to identify donor-derived cells in bone sections.
Aliases: FISH
- nonablated mice
Recipient mice that were not conditioned by ablation before transplantation.
Aliases: nonablated setting, nonablated recipients
- osteoblasts
Bone-forming cells that synthesize and secrete bone matrix.
- osteocytes
Mature bone cells that arise when osteoblasts become embedded within the bone matrix.
- whole bone marrow transplant
A transplant of unfractionated marrow cells used here as the donor cell source.
Aliases: whole marrow transplant, bone marrow transplant
REFERENCES
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