fusion of two genes at dna level produces a single protein, known as a chimeric protein. immunotoxins are chimeric proteins composed of specific cell targeting and cell killing moieties. bacterial or plant toxins are commonly used as the killing moieties of the chimeric immunotoxins. in this investigation, the catalytic domain of shiga-like toxin (a1) was fused to human granulocyte macrophage c...

Highly purified murine granulocyte-macrophage progenitor cells (CFU-GM) were used as target cells to assess the possible direct effects of purified preparations of recombinant murine gamma-interferon, prostaglandin E, recombinant human heavy chain (acidic) ferritin, and recombinant human tumor necrosis factor alpha (TNF-alpha) on progenitor cells in vitro. Target CFU-GM, with cloning efficienci...

Two separate helper T cell-derived lymphokines, interleukin 3 and granulocyte-macrophage colony-stimulating activity-2, were found to stimulate a broad and similar range of hemopoietic colonies in in vitro soft agar cultures including granulocyte, macrophage, granulocyte-macrophage, megakaryocyte, and mixed megakaryocyte colonies. Both lymphokines were potent stimulators of in vitro megakaryocy...

The effects of 12-O-tetradecanoylphorbol-13-acetate (TPA) on myeloid colony formation were investigated by initial and delayed addition of TPA to the cultures. In the human placental condi tioned medium-stimulated cultures, TPA inhibited normal myeloid colony formation without any change in colony morphology when added at the beginning of culture. However, macrophage-like transformation of myel...

s of the 34th Interscience Conference on Antimicrobial Agents and Chemotherapy. Orlando, FL. Washington, DC, American Society for Microbiology, 1994, p 266 (abstr H76) 148. Masucci G, Wersäll P, Ragnhammar P, Mellstedt H: Granulocytemonocyte-colony-stimulating factor augments the cytotoxic capacity of lymphocytes and monocytes in antibody dependent cellular cytotoxicity. Cancer Immunol Immunoth...

The effects of 12-O-tetradecanoylphorbol-13-acetate (TPA) on myeloid colony formation were investigated by initial and delayed addition of TPA to the cultures. In the human placental conditioned medium-stimulated cultures, TPA inhibited normal myeloid colony formation without any change in colony morphology when added at the beginning of culture. However, macrophage-like transformation of myelo...

s of the 34th Interscience Conference on Antimicrobial Agents and Chemotherapy. Orlando, FL. Washington, DC, American Society for Microbiology, 1994, p 266 (abstr H76) 148. Masucci G, Wersäll P, Ragnhammar P, Mellstedt H: Granulocytemonocyte-colony-stimulating factor augments the cytotoxic capacity of lymphocytes and monocytes in antibody dependent cellular cytotoxicity. Cancer Immunol Immunoth...

The treatment of acute nonlymphocytic leukemia results in predictable bone marrow hypoplasia and eventual cellular repopulation. In order to study this postchemotherapy repopulation, assays for hematopoietic progenitor cells were performed on bone marrow samples obtained from seven patients with acute nonlymphocytic leukemia who had received similar chemotherapeutic induction regimens. Burst-fo...