This invention provides an isolated nucleic acid molecule encoding human myeloblastin, a nucleic acid probe for detecting myeloblastin, and an antisense oligodeoxynucleotide complementary to myeloblastin mRNA. The invention also provides antibodies directed to myeloblastin, and purified myeloblastin. The invention further provides a pharmaceutical composition to inhibit proliferation and induce differentiation of leukemia cells, a myeloblastin inhibitor, and a factor suppressing myeloblastin expression. The invention provides methods for identifying leukemia cells which express different quantities of myeloblastin, treating leukemia, and for preparing purified myeloblastin. |