title: Eradication of minimal disease in severe combined immunodeficient mice with disseminated Daudi lymphoma using chemotherapy and an immunotoxin cocktail.
abstract: Severe combined immunodeficient (SCID) mice injected intravenously with a human Burkitt's lymphoma cell line (Daudi) develop disseminated lymphoma (SCID/Daudi), which is fatal in 100% of the mice. Early treatment of these mice with either an immunotoxin (IT) cocktail (consisting of anti-CD19-ricin A chain plus anti-CD22-ricin A chain) or chemotherapy significantly prolonged survival but was not curative. Combination therapy with the IT cocktail and any one of three chemotherapeutic drugs (doxorubicin, cytoxan, or camptothecin) cured the mice. Cure was demonstrated by both histopathologic examination of treated mice and, more importantly, by adoptive transfer of cells from organs of the cured mice to naive SCID mice where 100 tumor cells would have caused disease in the recipients. These results provide a strong rationale for combining IT therapy with conventional chemotherapy in the treatment of B-cell neoplasia.
authors.affiliation: Cancer Immunobiology Center, University of Texas Southwestern Medical Center at Dallas.
authors.forename: M A
authors.initials: MA
authors.lastname: Ghetie
authors.forename: K
authors.initials: K
authors.lastname: Tucker
authors.forename: J
authors.initials: J
authors.lastname: Richardson
authors.forename: J W
authors.initials: JW
authors.lastname: Uhr
authors.forename: E S
authors.initials: ES
authors.lastname: Vitetta
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000276:immunology; D018941:Antigens, CD19; D000944:Antigens, Differentiation, B-Lymphocyte / Q000276:immunology; D000970:Antineoplastic Agents / Q000008:administration & dosage*; D002051:Burkitt Lymphoma / Q000188:drug therapy*; D002166:Camptothecin / Q000008:administration & dosage; D015815:Cell Adhesion Molecules; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D005260:Female; D000922:Immunotoxins / Q000627:therapeutic use*; D037102:Lectins; D051379:Mice; D016513:Mice, SCID; D012276:Ricin / Q000008:administration & dosage; D051918:Sialic Acid Binding Ig-like Lectin 2
chemical_list: D015703:Antigens, CD; D018941:Antigens, CD19; D000944:Antigens, Differentiation, B-Lymphocyte; D000970:Antineoplastic Agents; C497868:Cd22 protein, mouse; D015815:Cell Adhesion Molecules; D000922:Immunotoxins; D037102:Lectins; D051918:Sialic Acid Binding Ig-like Lectin 2; D004317:Doxorubicin; D003520:Cyclophosphamide; D012276:Ricin; D002166:Camptothecin