期刊
HYBRIDOMA AND HYBRIDOMICS
卷 21, 期 4, 页码 245-252出版社
MARY ANN LIEBERT INC PUBL
DOI: 10.1089/153685902760213859
关键词
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Polycomb-group (PcG) proteins are chromatin-associated proteins that heritably repress gene activity in many organisms, including man. Two distinct human PcG complexes have been identified. The HPC/HPH PcG complex I contains the HPC, HPH, RING1, and BMI1 proteins, the EED/EZH2 PcG complex 11 contains the EED, EZH2, and YY1 proteins. Previously we found that the relative expression levels of proteins of the human PcG complexes I and 11 are severely deregulated in human tumors. These findings signify an important role for antibodies against human PcG proteins as diagnostic tools. To be able to produce standardized anti-human PcG antibodies, we developed a panel of five mouse monoclonal antibodies (MAbs) against the human PcG proteins HPC2, BMI1, RING1A, EED, and EZH2. All MAbs can be used for Western blot analysis and immunofluorescence labeling of tissue culture cells. With the exception of the MAb against HPC2, all MAbs can also be used in immunoprecipitation experiments and immunohistochemistry of human tissues. The novel MAbs are therefore valuable tools for the cell biological, biochemical, and pathological analysis of human PcG proteins.
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