Document 0120 DOCN M9590120 TI Cytokine-producing mammary carcinomas in transgenic rats carrying the pX gene of human T-lymphotropic virus type I. DT 9509 AU Yamada S; Ikeda H; Yamazaki H; Shikishima H; Kikuchi K; Wakisaka A; Kasai N; Shimotohno K; Yoshiki T; Department of Pathology, Hokkaido University School of Medicine,; Sapporo, Japan. SO Cancer Res. 1995 Jun 15;55(12):2524-7. Unique Identifier : AIDSLINE GENBANK/X52498 AB In two lines of transgenic rats (pX rats) from WKAH and F344 strains and carrying the human T-lymphotropic virus type I pX gene, undifferentiated mammary carcinomas developed predominantly in females starting at about 5 months of age, and there was massive infiltration of granulocytes in the tumor tissue. The incidence of the tumor reached about 40% when the rats were 12 months old. mRNAs of both pX and host genes Gro and MIP-2, which are granulocyte chemoattractants of the interleukin 8 family, were highly expressed in the tumor tissue. Since expression and point mutation of several oncogenes and the antioncogene were not demonstrated, hitherto unidentified novel oncogenic pathways may be transactivated by the pX transgene in these pX rats. DE Animal Animals, Transgenic Base Sequence Cytokines/*BIOSYNTHESIS DNA Primers Female *Genes, Viral Human HTLV-I/*GENETICS Immunohistochemistry Mammary Neoplasms, Experimental/*IMMUNOLOGY/PATHOLOGY Molecular Sequence Data Monokines/BIOSYNTHESIS Organ Specificity Polymerase Chain Reaction Rats Rats, Inbred F344 Rats, Inbred Strains Receptors, Prolactin/BIOSYNTHESIS Retroviridae Proteins, Oncogenic/*BIOSYNTHESIS Support, Non-U.S. Gov't Transforming Growth Factor beta/BIOSYNTHESIS JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).