«Because many broadly expressed
genes that play
key roles in
essential cellular functions are under the control of cell - specific enhancers, the ability to affect enhancer function by knocking down eRNAs could potentially provide a new strategy for altering
gene expression in vivo in a cell - specific manner,» said Glass, noting that in his research, anti-sense oligonucleotides were developed in conjunction with Isis Pharmaceuticals, which suppressed enhancer activity and reduced expression in nearby
genes.
Because CRISPR will never fully be rid of off - target effects, the
key question for a given therapy is not strictly how many unwanted cuts it makes, but whether it disrupts any
essential genes, says Jiing - Kuan Yee, a molecular biologist at the research center City of Hope in Duarte, California.