scholarly journals PROLIFERATION OF DONOR MARROW AND THYMUS CELLS IN THE MYELOID AND LYMPHOID ORGANS OF IRRADIATED SYNGENEIC HOST MICE

1973 ◽  
Vol 137 (2) ◽  
pp. 543-546 ◽  
Author(s):  
Akikazu Takada ◽  
Yumiko Takada
Keyword(s):  
Bone Marrow ◽  
Lymph Nodes ◽  
Bone Marrow Cells ◽  
The Other ◽  
Host Bone ◽  
Donor Type ◽  
Dividing Cells ◽  
Spleen And Lymph Nodes ◽  
Thymus Cells ◽  
Marrow Cells

CBA/HT6T6 bone marrow cells (1 x 107) or CBA/H bone marrow cells (1 x 107) plus CBA/HT6T6 thymus cells (5 x 107) were injected intravenously into lethally (800 R) irradiated CBA/H mice. Chromosome analyses of dividing cells in the host lymphoid and myeloid organs were performed at intervals after irradiation. Donor marrow cells settled and proliferated in the host bone marrow, spleen, and lymph nodes soon after injection, but donor marrow cells did not proliferate in the host thymus until day 10; then host-type cells were quickly replaced by donor-type cells in the thymus by day 20. On the other hand, donor thymus cells settled and proliferated in the host thymus and lymph nodes soon after injection but they gradually disappeared from these organs. On day 20, a few donor-type dividing cells (of thymus origin) were found in the host lymphoid and myeloid organs.

scholarly journals CELLS INVOLVED IN THE IMMUNE RESPONSE

1968 ◽  
Vol 128 (5) ◽  
pp. 1099-1128 ◽  
Author(s):  
Sharwan K. Singhal ◽  
Maxwell Richter
Keyword(s):  
Bone Marrow ◽  
Lymph Nodes ◽  
Antibody Formation ◽  
Bone Marrow Cells ◽  
Tritiated Thymidine ◽  
Specific Antigen ◽  
Cell Suspensions ◽  
The Other ◽  
Marrow Cells

Cell suspensions of immune rabbit lymph nodes and spleen were capable of undergoing blastogenesis and mitosis and of incorporating tritiated thymidine when maintained in culture with the specific antigen in vitro. They did not respond to other, non-cross-reacting antigens. The blastogenic response obtained with immune lymph node cells could be correlated with the antibody synthesizing capacity of fragment cultures prepared from the same lymph nodes. Cell suspensions of immune bone marrow responded to non-cross-reacting antigens only whereas cell suspensions of immune thymus, sacculus rotundus, and appendix did not respond when exposed to any of the antigens tested. On the other hand, neither fragments nor cell suspensions prepared from lymph nodes, spleen, and thymus of normal, unimmunized rabbits responded with antibody formation and blastogenesis when exposed to any of the antigens. However, normal bone marrow cells responded with marked blastogenesis and tritiated thymidine uptake. The specificity of this in vitro bone marrow response was demonstrated by the fact that the injection of a protein antigen in vivo resulted in the loss of reactivity by the marrow cell to that particular antigen but not to the other, non-cross-reacting antigens. Furthermore, bone marrow cells of tolerant rabbits failed to respond to the specific antigen in vitro. It was also demonstrated that normal bone marrow cells incubated with antigen are capable of forming antibody which could be detected by the fluorescent antibody technique. This response of the bone marrow cells has been localized to the lymphocyte-rich fraction of the bone marrow. It is concluded that the bone marrow lymphocyte, by virtue of its capacity to react with blastogenesis and mitosis and with antibody formation upon initial exposure to the antigen, a capacity not possessed by lymphocytes of the other lymphoid organs, has a preeminent role in the sequence of cellular events culminating in antibody formation.

scholarly journals DISTINCT EVENTS IN THE IMMUNE RESPONSE ELICITED BY TRANSFERRED MARROW AND THYMUS CELLS

1969 ◽  
Vol 130 (6) ◽  
pp. 1243-1261 ◽  
Author(s):  
G. M. Shearer ◽  
G. Cudkowicz
Keyword(s):  
Bone Marrow ◽  
Immune Response ◽  
Bone Marrow Cells ◽  
Second Step ◽  
Cell Divisions ◽  
Cellular Events ◽  
Antigen Complex ◽  
Fresh Bone ◽  
Thymus Cells ◽  
Marrow Cells

Marrow cells and thymocytes of unprimed donor mice were transplanted separately into X-irradiated syngeneic hosts, with or without sheep erythrocytes (SRBC). Antigen-dependent changes in number or function of potentially immunocompetent cells were assessed by retransplantation of thymus-derived cells with fresh bone marrow cells and SRBC; of marrow-derived cells with fresh thymocytes and SRBC; and of thymus-derived with marrow-derived cells and SRBC. Plaque-forming cells (PFC) of the direct (IgM) and indirect (IgG) classes were enumerated in spleens of secondary host mice at the time of peak responses. By using this two-step design, it was shown (a) that thymus, but not bone marrow, contained antigen-reactive cells (ARC) capable of initiating the immune response to SRBC (first step), and (b) that the same antigen complex that activated thymic ARC was required for the subsequent interaction between thymus-derived and marrow cells and/or for PFC production (second step). Thymic ARC separated from marrow cells but exposed to SRBC proliferated and generated specific inducer cells. These were the cells that interacted with marrow precursors of PFC to form the elementary units for plaque responses to SRBC, i.e. the class- and specificity-restricted antigen-sensitive units. It was estimated that each ARC generated 80–800 inducer cells in 4 days by way of a minimum of 6–10 cell divisions. On the basis of the available evidence, a simple model was outlined for cellular events in the immune response to SRBC.

scholarly journals THE ROLE OF THYMUS AND BONE MARROW CELLS IN DELAYED HYPERSENSITIVITY

1971 ◽  
Vol 134 (5) ◽  
pp. 1144-1154 ◽  
Author(s):  
David G. Tubergen ◽  
Joseph D. Feldman
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Specific Antigen ◽  
Delayed Hypersensitivity ◽  
Cell Type ◽  
Skin Reactions ◽  
Lymph Node Cells ◽  
Thymus Cells ◽  
Marrow Cells

Adoptive transfer experiments were performed to define the immunological role of thymus and bone marrow cells in the induction of delayed hypersensitivity (DH). The results indicated the following, (a) Bone marrow from immune donors contained cells capable of being stimulated by antigen to initiate the expression of DH. (b) Bone marrow from nonimmune or tolerant donors contained cells that were needed to complete the expression of DH after the infusion of immune lymph node cells. (c) Normal bone marrow and thymus cells cooperated in the irradiated recipient to induce the most vigorous skin reactions to specific antigen; these reactions were seen only when the recipients were stimulated by antigen. Either cell type alone was ineffective. (d) In the presence of tolerant bone marrow cells, thymus cells from immune donors gave a more vigorous response than did thymus cells from normal or tolerant donors. (e) There was suggestive evidence that thymus cells were the source of trigger elements that initiated DH. (f) Antigen in the irradiated recipient was necessary to induce DH after infusion of bone marrow cells alone, or bone marrow and thymus cells together.

scholarly journals STUDIES ON CHARACTERIZATION OF THE LYMPHOID TARGET CELL FOR ACTIVITY OF A THYMUS HUMORAL FACTOR

1973 ◽  
Vol 138 (1) ◽  
pp. 130-142 ◽  
Author(s):  
Varda Rotter ◽  
Amiela Globerson ◽  
Ichiro Nakamura ◽  
Nathan Trainin
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Cell Activity ◽  
Humoral Factor ◽  
Target Cells ◽  
Total Body ◽  
Thymus Cells ◽  
Marrow Cells

The immune response to SRBC was measured in the spleens of adult thymectomized, total body irradiated mice injected with various combinations of thymus and bone marrow cells together with thymic humoral factor (THF). It was found that the number of plaque-forming cells was significantly increased when THF was given in vivo immediately after thymus cell administration or when thymus cells were incubated in THF before injection. On the other hand, bone marrow cells equally treated did not manifest any T cell activity, since THF-treated bone marrow cells were not able to substitute thymus cells in the system used. The results accumulated in the present experiments indicate, therefore, that the target cells for THF activity are thymus cells which acquire a higher T helper cell capacity after THF treatment.

scholarly journals THYMOCYTES FROM MICE IMMUNIZED AGAINST AN ALLOGRAFT RENDER BONE-MARROW CELLS SPECIFICALLY CYTOTOXIC

1972 ◽  
Vol 135 (1) ◽  
pp. 150-164 ◽  
Author(s):  
C. K. Grant ◽  
G. A. Currie ◽  
P. Alexander
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Target Cells ◽  
Cytotoxic Action ◽  
Specific Target ◽  
C57bl Mice ◽  
Specific Increase ◽  
Spleen And Lymph Nodes ◽  
Marrow Cells

Thymocytes from C57BL mice immunized with the DBA/2 lymphoma L5178Y exert in vitro an immunologically specific cytotoxic action against the target cells in the presence of bone-marrow cells. Neither the nonimmune bone marrow nor the immune thymocytes are by themselves cytotoxic. The cells in the bone marrow which take part in the cytotoxic action adhere to glass and are sensitive to anti-macrophage serum. These bone-marrow cells can also be rendered specifically cytotoxic by exposure to the supernatant obtained from a culture of immune thymocytes with the specific target cells. The thymocytes before they are confronted with the specific target cells are very radiosensitive; however, on coming into contact with the target cells, an immunologically specific increase in RNA synthesis occurs and thereafter the thymocytes' capacity to render bone-marrow cells cytotoxic is relatively radioresistant. Two classes of immune lymphocytes occur in mice immunized with allogeneic cells, those that are capable of killing target cells directly and those that produce a factor capable of rendering macrophages (or monocytes) specifically cytotoxic. In the thymus of immune animals only the latter are found while both categories are present in the spleen and lymph nodes of immune animals.

Multiple unrelated clonal abnormalities in host bone marrow cells after allogeneic stem cell transplantation

2004 ◽  
Vol 28 (5) ◽  
pp. 537-540 ◽  
Author(s):  
Partow Kebriaei ◽  
Jane N. Winter ◽  
Ginna G. Laport ◽  
Michelle M. Le Beau ◽  
Gordon Dewald ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Stem Cell Transplantation ◽  
Cell Transplantation ◽  
Allogeneic Stem Cell Transplantation ◽  
Bone Marrow Cells ◽  
Host Bone ◽  
Clonal Abnormalities ◽  
Marrow Cells

Host bone-marrow cells are a source of donor intimal smooth- muscle–like cells in murine aortic transplant arteriopathy

10.1038/89121 ◽  
2001 ◽  
Vol 7 (6) ◽  
pp. 738-741 ◽  
Author(s):  
Koichi Shimizu ◽  
Seigo Sugiyama ◽  
Masanori Aikawa ◽  
Yoshihiro Fukumoto ◽  
Elena Rabkin ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Smooth Muscle ◽  
Bone Marrow Cells ◽  
Host Bone ◽  
Marrow Cells

scholarly journals Cellular basis of graft versus host tolerance in chimeras prepared with total lymphoid irradiation.

1980 ◽  
Vol 152 (3) ◽  
pp. 736-741 ◽  
Author(s):  
M Gottlieb ◽  
S Strober ◽  
H S Kaplan
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Suppressor Cells ◽  
Third Party ◽  
Whole Body ◽  
Mixed Chimerism ◽  
Clonal Deletion ◽  
Donor Type ◽  
Host Tolerance ◽  
Marrow Cells

BALB/c mice given allogeneic (C57BL/Ka) bone marrow cells after toal lymphoid irradiation become stable chimeras approximately 80% donor-type and 20% host-type cells in the spleen. The chimeras doe not develop graft vs. host disease (GVHD). Purified cells of C57BL/Ka origin from the chimeras mediated GVHD in lightly irradiated C3H (third party), but not in BALB/c (host-strain) mice. Thus graft vs. host tolerance in the chimeras could not be explained by complete immunodeficiency of donor-type cells, serum blocking factors, or suppressor cells of host (BALB/c) origin. Clonal deletion or suppression of lymphocytes reactive with host tissues remain possible explanations. The transfer of donor-type chimeric spleen cells to BALB/c recipients given 500-550 rad whole-body irradiation WBI led to stable mixed chimerism in approximately 50% of recipients. The cells were presumably acting as tolerogens because similarly irradiated BALB/c mice given (BALB/c X C57BL/Ka)F1 spleen or bone marrow cells also became stable mixed chimeras.

scholarly journals THYMUS-DERIVED ROSETTES ARE NOT "HELPER" CELLS

1973 ◽  
Vol 138 (5) ◽  
pp. 1133-1143 ◽  
Author(s):  
B. E. Elliott ◽  
J. S. Haskill ◽  
M. A. Axelrad
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Velocity Sedimentation ◽  
Spleen Cells ◽  
Small Lymphocyte ◽  
Helper Cells ◽  
Normal Spleen ◽  
Thymus Cells ◽  
Lymphocyte Fraction ◽  
Marrow Cells

Rosettes against SRBC were made from normal spleen cells. Although T rosettes tend to dissociate, they could be stabilized with 0.05% sodium azide. A clear separation of nonrosettes, T rosettes, and B rosettes was obtained by subjecting the suspension of splenic rosettes to velocity sedimentation at unit gravity. Each fraction was injected with either normal bone marrow cells or normal thymus cells with antigen into 650-R-irradiated hosts. Direct plaque-forming cells (PFC) were assayed in the spleens 7 days later. Synergism with thymus cells occurred only in the B-rosette fraction; PFC precursors therefore sedimented as B rosettes. Synergism with bone marrow cells occurred only in the nonrosette small lymphocyte fraction; helper cells therefore did not bind detectable numbers of sheep red blood cells (SRBC). Thus T rosettes are not helper cells in the direct PFC response of bone marrow B cells to SRBC.

scholarly journals IMMUNOGLOBULINS ON THE SURFACE OF LYMPHOCYTES

1971 ◽  
Vol 133 (6) ◽  
pp. 1188-1198 ◽  
Author(s):  
Emil R. Unanue ◽  
Howard M. Grey ◽  
Enrique Rabellino ◽  
Priscilla Campbell ◽  
Jon Schmidtke
Keyword(s):  
Bone Marrow ◽  
Lymph Nodes ◽  
Bone Marrow Cells ◽  
Live Cells ◽  
Light Chains ◽  
Adult Mice ◽  
Normal Number ◽  
Spleen Lymphocytes ◽  
Spleen And Lymph Nodes ◽  
Two Populations

Immunofluorescent studies using live cells from antibody-forming organs and anti-immunoglobulin antibodies demonstrate two populations of small lymphocytes which are differentiated by the presence or absence of Ig on their surface membranes. Most of the lymphocytes with detectable surface Ig appear to derive from cells of the bone marrow, while most of the Ig-negative lymphocytes derive from the thymus. Thus, adult mice thymectomized, lethally irradiated, and transplanted with bone marrow cells showed a normal number of lymphocytes with surface Ig but were depleted of the Ig-negative lymphocytes. Injection of thymocytes into these mice did not result in an increase in the number of lymphocytes with surface Ig in spleen and lymph nodes. Most of the injected thymocytes could be identified by means of histocompatibility markers. Also, the spleen and lymph nodes of neonatally thymectomized mice contained lymphocytes with surface Ig but were depleted of the Ig-negative lymphocytes. Attempts were made to identify light chains on thymocytes by a sensitive radioimmunoassay. In some experiments no light chains were detected and in others a small amount, i.e. no more than 2.6% of the amount present on spleen lymphocytes, could be detected. Whether these low figures are significant or represent a small amount of serum contamination is not clear as yet.

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