Mouse mammary tumor virus Env-derived peptide associates with nucleolar targets in lymphoma, mammary carcinoma, and human breast cancer.
basic_science · Level V
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Abstract
We have previously shown that the leader peptide (p14) of the Env-precursor of mouse mammary tumor virus is translocated into the nucleoli of murine T cell lymphomas that harbor this virus. Using a polyclonal antibody against recombinant p14, we show here that p14 is also localized to the nucleoli of murine mammary carcinomas and some human breast cancer samples. Affinity purification studies define a number of proteins, mostly nucleolar, that bind p14. Taken together, these findings point towards a more general involvement of p14 in lymphomagenesis and mammary carcinogenesis.
Medical subject headings
- Breast Neoplasms
- Cell Nucleolus
- Lymphoma, T-Cell
- Mammary Neoplasms, Experimental
- Mammary Tumor Virus, Mouse
- Viral Envelope Proteins