This association translates into the clinical recommendation of using Ki-67 expression to guide the administration of systemic chemotherapy, based on the evidence that treatment-induced benefits are minimal in tumours with Ki-67 index <1% (O'Toole et al, 2010).
Gene-specific spacer sequence was cloned into entry vectors for expression of guide RNA (Supplementary information, Figure S1 and Data S1), which was then cloned into destination vectors containing the CAS9 expression cassette.
Hence, we took a robust metric, the overall variability of gene expression, to guide gene selection.
MiRNAs mediate gene expression by guiding interaction of the miRNA-induced silencing complex, composed of Argonaute proteins (Ago) and miRNAs, with target mRNAs (2).
MicroRNAs (miRNAs) play a key role in the posttranscriptional regulation of gene expression by guiding the association between the RNA-induced silencing complex (RISC) and target RNAs (reviewed in Fabian et al., 2010).
Given the success of gene expression profiling in guiding therapy decisions in the field of oncology, expression profiling is currently being explored as a biomarker predictive of treatment response to other therapies, including biologic treatments used for RA [19 23].
Most mature miRNAs directly interact with a group of messenger RNAs (mRNAs) and suppress their expression either by guiding the cleavage of the target mRNAs or by inhibiting their translation upon imperfect base pairing to mRNA's 3′- untranslated region (3′-UTR) [ 4].
Genome wide analytic methods, such as microarrays or transcriptome sequencing followed by biocomputational modeling [ 20, 21] offers a global view of gene/protein expression guiding the characterization of complex regulatory networks.
Lord Baker, former education secretary, once complained that "our education system is not the product of a single directing mind - a Napoleon or a Bismarck - let alone the expression of a single guiding principle".
The empty vector for the expression of single guide RNAs, pX459 was obtained from Addgene.
Transfection with this vector leads to the simultaneous expression of single guide RNAs, Cas9, and a puromycin resistance gene.
