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See detailThe spectrum of circulating RNA: A window into systems toxicology
Wang, Kai; Yuan, Yue; Cho, Ji-Hoon et al

in Toxicological Sciences (2013), 132(2), 478492

Adverse effects caused by therapeutic drugs are a serious and costly health concern. Despite the body’s systemic responses to therapeutics, the liver is often the focus of damage and is usually the focus ... [more ▼]

Adverse effects caused by therapeutic drugs are a serious and costly health concern. Despite the body’s systemic responses to therapeutics, the liver is often the focus of damage and is usually the focus of studies of toxic effects due to its active roles in the metabolism of xenobiotics. It is extremely difficult, however, to assess systemic responses with currently available methods. Comprehensive cataloging of cell-free circulating RNAs using next-generation sequencing technology may open a window to assess drug-associated adverse effects at the systems level. To explore this potential, we conducted an RNA profiling study using the well-characterized acetaminophen overdose mouse model on liver and plasma with microarray and next-generation sequencing platforms, respectively. After drug treatment, the levels of a number of transcripts, both endogenous and exogenous RNAs, showed significant changes in plasma, reflecting not only the classical liver injury induced by acetaminophen overdose but also damage in tissues other than the liver. The changes in exogenous RNAs also reflect alteration on dieting behavior after acetaminophen overdose. Besides reporting an extensive list of circulating RNAbased biomarker candidates, this study illustrates the possibility of using circulating RNAs to assess global effects of therapeutics. This could also lead to a new approach for a more comprehensive assessment of the efficacy and safety of therapeutics. [less ▲]

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