Effect of chemotherapy and irradiation on interactions between stromal and hemopoietic cells in vitro

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Scanning Electron Microsc.; (United States)

OSTI ID:5853585

Cohen, G I; Greenberger, J S; Canellos, G P

We examined the interactions between stromal and hemopoietic cells in mouse long-term bone marrow cultures. The adherent stroma is formed by several layers of cells consisting of macrophage, fibroblasts, and adventitial cells which accumulate lipid to become adipocytes. Stromal cells become closely apposed to loosely adherent hemopoietic cells but gap junctions occur only among cells in the adherent layer. The hemopoietic cells form tightly packed structures resembling cobblestones which contain granulocytes in all stages of differentiation. Using an in vitro model for bone marrow transplantation (BMT), we treated pure mouse stromal cell cultures with irradiation (1000 R) or chemotherapy (BCNU) prior to engraftment with hemopoietic stem cells. After two weeks, engrafted cultures were indistinguishable from the long-term bone marrow cultures previously described by Dexter. The adipocytes in irradiated cultures developed numerous submembrane pinocytotic vesicles but stromal-hemopoietic cell interactions remained unchanged compared to unirradiated controls. By contrast, granulocytes grafted onto chemotherapy treated stroma showed swelling of endoplasmic reticulum suggesting early toxic injury. These findings are consistent with functional studies of hemopoiesis after engraftment onto treated stroma and confirm an important role for stromal cells in the support of hemopoiesis.

• Research Organization: Department of Medical Oncology, Sidney Farber Cancer Institute, Harvard Medical School, Boston, MA
• OSTI ID: 5853585
• Journal Information: Scanning Electron Microsc.; (United States), Journal Name: Scanning Electron Microsc.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BONE MARROW CELLS
BIOLOGICAL RADIATION EFFECTS
CELL CULTURES
BLOOD FORMATION
CHEMOTHERAPY
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STEM CELLS
ANIMAL CELLS
ANIMALS
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MAMMALS
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560121* - Radiation Effects on Cells- External Source- (-1987)