| Product Includes | Product # | Quantity | Mol. Wt | Isotype/Source |
|---|---|---|---|---|
| DNMT1 (D63A6) XP® Rabbit mAb | 5032 | 20 µl | 200 kDa | Rabbit IgG |
| DNMT3A (E9P2F) Rabbit mAb | 49768 | 20 µl | 85, 95, 130 kDa | Rabbit IgG |
| DNMT3B (E8A8A) XP® Rabbit mAb | 57868 | 20 µl | 96 kDa | Rabbit IgG |
| Anti-rabbit IgG, HRP-linked Antibody | 7074 | 100 µl | Goat |
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Description
The DNA Methylation Antibody Sampler Kit provides an economical means of detecting DNA methyltransferase enzymes. The kit includes enough antibodies to perform two western blot experiments with each primary antibody.
Storage
Background
Methylation of DNA at cytosine residues in mammalian cells is a heritable, epigenetic modification that is critical for proper regulation of gene expression, genomic imprinting and development (1,2). Three families of mammalian DNA methyltransferases have been identified: DNMT1, DNMT2, and DNMT3 (1,2). DNMT1 is constitutively expressed in proliferating cells and functions as a maintenance methyltransferase, transferring proper methylation patterns to newly synthesized DNA during replication. DNMT3A and DNMT3B are strongly expressed in embryonic stem cells with reduced expression in adult somatic tissues. DNMT3A and DNMT3B function as de novo methyltransferases that methylate previously unmethylated regions of DNA. DNMT2 is expressed at low levels in adult somatic tissues and its inactivation affects neither de novo nor maintenance DNA methylation. DNMT1, DNMT3A, and DNMT3B together form a protein complex that interacts with histone deacetylases (HDAC1, HDAC2, Sin3A), transcriptional repressor proteins (RB, TAZ-1), and heterochromatin proteins (HP1, SUV39H1) to maintain proper levels of DNA methylation and facilitate gene silencing (3-8). Improper DNA methylation contributes to diseased states such as cancer (1,2). Hypermethylation of promoter CpG islands within tumor suppressor genes correlates with gene silencing and the development of cancer. In addition, hypomethylation of bulk genomic DNA correlates with and may contribute to the onset of cancer. DNMT1, DNMT3A, and DNMT3B are overexpressed in many cancers, including acute and chronic myelogenous leukemias, in addition to colon, breast, and stomach carcinomas (9-12).
- Hermann, A. et al. (2004) Cell. Mol. Life Sci. 61, 2571-87.
- Turek-Plewa, J. and Jagodziński, P.P. (2005) Cell. Mol. Biol. Lett. 10, 631-47.
- Kim, G.D. et al. (2002) EMBO J. 21, 4183-95.
- Fuks, F. et al. (2001) EMBO J. 20, 2536-44.
- Geiman, T.M. et al. (2004) Biochem. Biophys. Res. Commun. 318, 544-55.
- Rountree, M.R. et al. (2000) Nat. Genet. 25, 269-77.
- Pradhan, S. and Kim, G.D. (2002) EMBO J. 21, 779-88.
- Fuks, F. et al. (2003) Nucleic Acids Res. 31, 2305-12.
- Mizuno, S. et al. (2001) Blood 97, 1172-9.
- Robertson, K.D. et al. (1999) Nucleic Acids Res. 27, 2291-8.
- Xie, S. et al. (1999) Gene 236, 87-95.
- Kanai, Y. et al. (2001) Int. J. Cancer 91, 205-12.
Background References
Trademarks and Patents
Limited Uses
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