Abstract
Small interfering RNA (siRNA) technology has emerged as a powerful genetic tool to investigate gene function in mammalian cells. Here we use siRNA to study a mediator of DNA damage-checkpoint protein 1 (MDC1), previously known as Kiaa0170 or NFBD1, in DNA damage responses. We show that MDC1 siRNA specifically and efficiently down-regulates MDC1 expression, resulting in defective radiation-induced apoptosis in A549 cells. Transfection with siRNA-resistant MDC1 restores radiation-induced apoptosis. These findings suggest that siRNA can be a very useful tool for the exploration of gene function in mammalian checkpoint responses.
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References
Jorgensen, R. A., Cluster, P. D., English, J., Que, Q., and Napoli, C. A. (1996) Chalcone synthase cosuppression phenotypes in petunia flowers: comparison of sense vs. antisense constructs and single-copy vs. complex T-DNA sequences. Plant Mol. Biol. 31, 957–973.
Fire, A., Xu, S., Montgomery, M. K., Kostas, S. A., Driver, S. E., and Mello, C. C. (1998) Potent and specific genetic interference by double-stranded RNA in Caenorhabditis elegans. Nature 391, 806–811.
Bernstein, E., Denli, A. M., and Hannon, G. J. (2001) The rest is silence. RNA 7, 1509–1521.
Hammond, S. M., Caudy, A. A., and Hannon, G. J. (2001) Post-transcriptional gene silencing by double-stranded RNA. Nat. Rev. Genet. 2, 110–119.
Hannon, G. J. (2002) RNA interference. Nature 418, 244–251.
Elbashir, S. M., Harborth, J., Lendeckel, W. Yalcin, A., Weber, K., and Tuschl, T. (2001) Duplexes of 21-nucleotide RNAs mediate RNA interference in cultured mammalian cells. Nature 411, 494–498.
Caplen, N. J., Parrish, S., Imani, F., Fire, A., and Morgan, R. A. (2001) Specific inhibition of gene expression by small double-stranded RNAs in invertebrate and vertebrate systems. Proc. Natl. Acad. Sci. USA 98, 9742–9747.
Sui, G., Soohoo, C., Affar, el B., et al. (2002) A DNA vector-based RNAi technology to suppress gene expression in mammalian cells. Proc. Natl. Acad. Sci. USA 99, 5515–5520.
Paddison, P. J., Caudy, A. A., and Hannon, G. J. (2002) Stable suppression of gene expression by RNAi in mammalian cells. Proc. Natl. Acad. Sci. USA 99, 1443–1448.
Brummelkamp, T. R., Bernards, R., and Agami, R. (2002) A system for stable expression of short interfering RNAs in mammalian cells. Science 296, 550–553.
Yu, J. Y., DeRuiter, S. L., and Turner, D. L. (2002) RNA interference by expression of short-interfering RNAs and hairpin RNAs in mammalian cells. Proc. Natl. Acad. Sci. USA 99, 6047–6052.
Lee, N. S., Dohjima, T., Bauer, G., et al. (2002) Expression of small interfering RNAs targeted against HIV-1 rev transcripts in human cells. Nat. Biotechnol. 20, 500–505.
Paul, C. P., Good, P. D., Winer, I., and Engelke, D. R. (2002) Effective expression of small interfering RNA in human cells. Nat. Biotechnol. 20, 505–508.
Miyagishi, M. and Taira, K. (2002) U6 promoter-driven siRNAs with four uridine 3′ overhangs efficiently suppress targeted gene expression in mammalian cells. Nat. Biotechnol. 20, 497–500.
McManus, M. T., Shimamura, M., Grams, J., and Hajduk, S. L. (2001) Identification of candidate mitochondrial RNA editing ligases from Trypanosoma brucei. RNA 7, 167–175.
Brummelkamp, T. R., Bernards, R., and Agami, R. (2002) Stable suppression of tumorigenicity by virus-mediated RNA interference. Cancer Cell 2, 243–247.
Lou, Z., Minter-Dykhouse, K., Wu, X., and Chen, J. (2003) MDC1 is coupled to activated CHK2 in mammalian DNA damage response pathways. Nature 421, 957–961.
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Lou, Z., Chen, J. (2004). Use of siRNA to Study the Function of MDC1 in DNA Damage Responses. In: Schönthal, A.H. (eds) Checkpoint Controls and Cancer. Methods in Molecular Biology, vol 281. Humana Press. https://doi.org/10.1385/1-59259-811-0:179
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DOI: https://doi.org/10.1385/1-59259-811-0:179
Publisher Name: Humana Press
Print ISBN: 978-1-58829-500-2
Online ISBN: 978-1-59259-811-3
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