title: miRXplore TM Microarray (922)
status: Public on Oct 05 2010
contact.city: Bergisch Gladbach
contact.first: Silvia
contact.last: Rueberg
contact.email: silvia@miltenyibiotec.de
contact.address: Friedrich-Ebert-Str. 68
contact.department: Genomic Services
contact.country: Germany
contact.institute: Miltenyi Biotec GmbH
organism: Homo sapiens
  Mus musculus
  Rattus norvegicus
description: The miRXplore TM Microarray is composed of 6228 DNA oligonucleotides with a sequence being reverse complement to the respective mature miRNA or control RNA, representing a total of 1460 miRNA sequences and 97 controls with all probes spotted in quadruplicates. The 1460 miRNA sequences covered sequence verified miRNAs of the species human (878) mouse (696) and rat (426) as well as viral miRNAs (141) and further mammalian species (76) as deposited in the miRBase sequence database version 10.1. The 97 positive and negative control probes were chosen as follows. Three sets of controls, miRControl 1 (four sequences used to assess efficiency and sensitivity of labelling), miRControl 2 (single sequence used to assess efficiency of small RNA enrichment) and miRControl 3 (43 sequences used to normalize signal intensities across different samples and arrays) were artificial sequences chosen not be present in any of the human, mouse, rat or viral genome. A fourth set of positive controls presented 36 positive small but non-miRNA sequences including probes e.g. for 5.1 sRNA, tRNAs, and U6 RNAs. A fifth set of oligonucleotides included 13 negative controls like different single or double mismatch, antisense, or scrambled miRNA sequences. Microarrays were manufactured by Miltenyi Biotec. Briefly, 1.2 nl of 10 µM HPLC purified, 5’ amino-modified DNA oligonucleotides (Metabion) were spotted on aminopropyltrimethoxysilane / phenylendiisothiocyanate coated glass slides in quadruplicates using a customized piezoelectric spotter.
manufacture_protocol: 1.2 nl of 10 µM HPLC purified, 5’ amino-modified DNA oligonucleotides (Metabion) were spotted four times on aminopropyltrimethoxysilane / phenylendiisothiocyanate coated glass slides using a customized piezoelectric spotter.