<?xml version="1.0" encoding="UTF-8"?>
<EXPERIMENT_SET xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <EXPERIMENT alias="GSM1422181" accession="SRX635992" center_name="GEO">
    <IDENTIFIERS>
      <PRIMARY_ID>SRX635992</PRIMARY_ID>
      <SUBMITTER_ID namespace="GEO">GSM1422181</SUBMITTER_ID>
    </IDENTIFIERS>
    <TITLE>GSM1422181: astrocyte_pre-sen_rep1; Homo sapiens; RNA-Seq</TITLE>
    <STUDY_REF accession="SRP043644" refname="GSE58910">
      <IDENTIFIERS>
        <PRIMARY_ID>SRP043644</PRIMARY_ID>
      </IDENTIFIERS>
    </STUDY_REF>
    <DESIGN>
      <DESIGN_DESCRIPTION/>
      <SAMPLE_DESCRIPTOR accession="SRS649458">
        <IDENTIFIERS>
          <PRIMARY_ID>SRS649458</PRIMARY_ID>
          <EXTERNAL_ID namespace="GEO">GSM1422181</EXTERNAL_ID>
        </IDENTIFIERS>
      </SAMPLE_DESCRIPTOR>
      <LIBRARY_DESCRIPTOR>
        <LIBRARY_STRATEGY>RNA-Seq</LIBRARY_STRATEGY>
        <LIBRARY_SOURCE>TRANSCRIPTOMIC</LIBRARY_SOURCE>
        <LIBRARY_SELECTION>cDNA</LIBRARY_SELECTION>
        <LIBRARY_LAYOUT>
          <SINGLE/>
        </LIBRARY_LAYOUT>
        <LIBRARY_CONSTRUCTION_PROTOCOL>Total RNA was isolated using the RNeasy Mini Kit (Qiagen; Valencia, CA) according to the manufacturer’s instructions and the concentration was determined using a NanoDrop ND-1000 spectrophotometer (NanoDrop; Rockland, DE) Libraries were prepared by selecting poly-A-containing mRNA from total cellular RNA using the Dynabeads mRNA direct kit (Life technologies). The mRNA was fragmented and a 5’phosphate was then added using T4 polynucleotide kinase (Life technologies). A 15% TBE-urea gel was used to size select the library for fragmented products of 60-200 nucleotides. The ends of the fragmented products were ligated with Illumina v1.5 RNA adapters using T4 RNA ligase 2 (New England Biolabs). Superscript II reverse transcriptase (Life technologies) was used to generate a cDNA library that was PCR-amplified using Phusion HiFi DNA polymerase (New England Biolabs). The cDNA library was purified on a 6% TBE gel (Life technologies). The quality of the library was verified prior to sequencing by cloning into Zero Blunt TOPO (Life technologies) and analyzing 6-10 clones by standard sequencing to determine the diversity of the library products, the abundance of rRNA, appropriate size of the products, and the presence of adapters. T he verified size-selected poly-A stranded cDNA library was submitted to the Next-Generation Sequencing Core (NGSC) University of Pennsylvania, Philadelphia PA for sequencing. The Illumina Solexa GAII platform was used to obtain 50-bp single-end sequencing reads, which were analyzed using the v1.5 pipeline.</LIBRARY_CONSTRUCTION_PROTOCOL>
      </LIBRARY_DESCRIPTOR>
    </DESIGN>
    <PLATFORM>
      <ILLUMINA>
        <INSTRUMENT_MODEL>Illumina HiSeq 2000</INSTRUMENT_MODEL>
      </ILLUMINA>
    </PLATFORM>
    <EXPERIMENT_LINKS>
      <EXPERIMENT_LINK>
        <URL_LINK>
          <LABEL>GEO Sample GSM1422181</LABEL>
          <URL>http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1422181</URL>
        </URL_LINK>
      </EXPERIMENT_LINK>
      <EXPERIMENT_LINK>
        <XREF_LINK>
          <DB>gds</DB>
          <ID>301422181</ID>
        </XREF_LINK>
      </EXPERIMENT_LINK>
    </EXPERIMENT_LINKS>
    <EXPERIMENT_ATTRIBUTES>
      <EXPERIMENT_ATTRIBUTE>
        <TAG>GEO Accession</TAG>
        <VALUE>GSM1422181</VALUE>
      </EXPERIMENT_ATTRIBUTE>
    </EXPERIMENT_ATTRIBUTES>
  </EXPERIMENT>
  <EXPERIMENT alias="GSM1422182" accession="SRX635993" center_name="GEO">
    <IDENTIFIERS>
      <PRIMARY_ID>SRX635993</PRIMARY_ID>
      <SUBMITTER_ID namespace="GEO">GSM1422182</SUBMITTER_ID>
    </IDENTIFIERS>
    <TITLE>GSM1422182: astrocyte_pre-sen_rep2; Homo sapiens; RNA-Seq</TITLE>
    <STUDY_REF accession="SRP043644" refname="GSE58910">
      <IDENTIFIERS>
        <PRIMARY_ID>SRP043644</PRIMARY_ID>
      </IDENTIFIERS>
    </STUDY_REF>
    <DESIGN>
      <DESIGN_DESCRIPTION/>
      <SAMPLE_DESCRIPTOR accession="SRS649459">
        <IDENTIFIERS>
          <PRIMARY_ID>SRS649459</PRIMARY_ID>
          <EXTERNAL_ID namespace="GEO">GSM1422182</EXTERNAL_ID>
        </IDENTIFIERS>
      </SAMPLE_DESCRIPTOR>
      <LIBRARY_DESCRIPTOR>
        <LIBRARY_STRATEGY>RNA-Seq</LIBRARY_STRATEGY>
        <LIBRARY_SOURCE>TRANSCRIPTOMIC</LIBRARY_SOURCE>
        <LIBRARY_SELECTION>cDNA</LIBRARY_SELECTION>
        <LIBRARY_LAYOUT>
          <SINGLE/>
        </LIBRARY_LAYOUT>
        <LIBRARY_CONSTRUCTION_PROTOCOL>Total RNA was isolated using the RNeasy Mini Kit (Qiagen; Valencia, CA) according to the manufacturer’s instructions and the concentration was determined using a NanoDrop ND-1000 spectrophotometer (NanoDrop; Rockland, DE) Libraries were prepared by selecting poly-A-containing mRNA from total cellular RNA using the Dynabeads mRNA direct kit (Life technologies). The mRNA was fragmented and a 5’phosphate was then added using T4 polynucleotide kinase (Life technologies). A 15% TBE-urea gel was used to size select the library for fragmented products of 60-200 nucleotides. The ends of the fragmented products were ligated with Illumina v1.5 RNA adapters using T4 RNA ligase 2 (New England Biolabs). Superscript II reverse transcriptase (Life technologies) was used to generate a cDNA library that was PCR-amplified using Phusion HiFi DNA polymerase (New England Biolabs). The cDNA library was purified on a 6% TBE gel (Life technologies). The quality of the library was verified prior to sequencing by cloning into Zero Blunt TOPO (Life technologies) and analyzing 6-10 clones by standard sequencing to determine the diversity of the library products, the abundance of rRNA, appropriate size of the products, and the presence of adapters. T he verified size-selected poly-A stranded cDNA library was submitted to the Next-Generation Sequencing Core (NGSC) University of Pennsylvania, Philadelphia PA for sequencing. The Illumina Solexa GAII platform was used to obtain 50-bp single-end sequencing reads, which were analyzed using the v1.5 pipeline.</LIBRARY_CONSTRUCTION_PROTOCOL>
      </LIBRARY_DESCRIPTOR>
    </DESIGN>
    <PLATFORM>
      <ILLUMINA>
        <INSTRUMENT_MODEL>Illumina HiSeq 2000</INSTRUMENT_MODEL>
      </ILLUMINA>
    </PLATFORM>
    <EXPERIMENT_LINKS>
      <EXPERIMENT_LINK>
        <URL_LINK>
          <LABEL>GEO Sample GSM1422182</LABEL>
          <URL>http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1422182</URL>
        </URL_LINK>
      </EXPERIMENT_LINK>
      <EXPERIMENT_LINK>
        <XREF_LINK>
          <DB>gds</DB>
          <ID>301422182</ID>
        </XREF_LINK>
      </EXPERIMENT_LINK>
    </EXPERIMENT_LINKS>
    <EXPERIMENT_ATTRIBUTES>
      <EXPERIMENT_ATTRIBUTE>
        <TAG>GEO Accession</TAG>
        <VALUE>GSM1422182</VALUE>
      </EXPERIMENT_ATTRIBUTE>
    </EXPERIMENT_ATTRIBUTES>
  </EXPERIMENT>
  <EXPERIMENT alias="GSM1422183" accession="SRX635994" center_name="GEO">
    <IDENTIFIERS>
      <PRIMARY_ID>SRX635994</PRIMARY_ID>
      <SUBMITTER_ID namespace="GEO">GSM1422183</SUBMITTER_ID>
    </IDENTIFIERS>
    <TITLE>GSM1422183: astrocyte_senescent_rep1; Homo sapiens; RNA-Seq</TITLE>
    <STUDY_REF accession="SRP043644" refname="GSE58910">
      <IDENTIFIERS>
        <PRIMARY_ID>SRP043644</PRIMARY_ID>
      </IDENTIFIERS>
    </STUDY_REF>
    <DESIGN>
      <DESIGN_DESCRIPTION/>
      <SAMPLE_DESCRIPTOR accession="SRS649460">
        <IDENTIFIERS>
          <PRIMARY_ID>SRS649460</PRIMARY_ID>
          <EXTERNAL_ID namespace="GEO">GSM1422183</EXTERNAL_ID>
        </IDENTIFIERS>
      </SAMPLE_DESCRIPTOR>
      <LIBRARY_DESCRIPTOR>
        <LIBRARY_STRATEGY>RNA-Seq</LIBRARY_STRATEGY>
        <LIBRARY_SOURCE>TRANSCRIPTOMIC</LIBRARY_SOURCE>
        <LIBRARY_SELECTION>cDNA</LIBRARY_SELECTION>
        <LIBRARY_LAYOUT>
          <SINGLE/>
        </LIBRARY_LAYOUT>
        <LIBRARY_CONSTRUCTION_PROTOCOL>Total RNA was isolated using the RNeasy Mini Kit (Qiagen; Valencia, CA) according to the manufacturer’s instructions and the concentration was determined using a NanoDrop ND-1000 spectrophotometer (NanoDrop; Rockland, DE) Libraries were prepared by selecting poly-A-containing mRNA from total cellular RNA using the Dynabeads mRNA direct kit (Life technologies). The mRNA was fragmented and a 5’phosphate was then added using T4 polynucleotide kinase (Life technologies). A 15% TBE-urea gel was used to size select the library for fragmented products of 60-200 nucleotides. The ends of the fragmented products were ligated with Illumina v1.5 RNA adapters using T4 RNA ligase 2 (New England Biolabs). Superscript II reverse transcriptase (Life technologies) was used to generate a cDNA library that was PCR-amplified using Phusion HiFi DNA polymerase (New England Biolabs). The cDNA library was purified on a 6% TBE gel (Life technologies). The quality of the library was verified prior to sequencing by cloning into Zero Blunt TOPO (Life technologies) and analyzing 6-10 clones by standard sequencing to determine the diversity of the library products, the abundance of rRNA, appropriate size of the products, and the presence of adapters. T he verified size-selected poly-A stranded cDNA library was submitted to the Next-Generation Sequencing Core (NGSC) University of Pennsylvania, Philadelphia PA for sequencing. The Illumina Solexa GAII platform was used to obtain 50-bp single-end sequencing reads, which were analyzed using the v1.5 pipeline.</LIBRARY_CONSTRUCTION_PROTOCOL>
      </LIBRARY_DESCRIPTOR>
    </DESIGN>
    <PLATFORM>
      <ILLUMINA>
        <INSTRUMENT_MODEL>Illumina HiSeq 2000</INSTRUMENT_MODEL>
      </ILLUMINA>
    </PLATFORM>
    <EXPERIMENT_LINKS>
      <EXPERIMENT_LINK>
        <URL_LINK>
          <LABEL>GEO Sample GSM1422183</LABEL>
          <URL>http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1422183</URL>
        </URL_LINK>
      </EXPERIMENT_LINK>
      <EXPERIMENT_LINK>
        <XREF_LINK>
          <DB>gds</DB>
          <ID>301422183</ID>
        </XREF_LINK>
      </EXPERIMENT_LINK>
    </EXPERIMENT_LINKS>
    <EXPERIMENT_ATTRIBUTES>
      <EXPERIMENT_ATTRIBUTE>
        <TAG>GEO Accession</TAG>
        <VALUE>GSM1422183</VALUE>
      </EXPERIMENT_ATTRIBUTE>
    </EXPERIMENT_ATTRIBUTES>
  </EXPERIMENT>
  <EXPERIMENT alias="GSM1422184" accession="SRX635995" center_name="GEO">
    <IDENTIFIERS>
      <PRIMARY_ID>SRX635995</PRIMARY_ID>
      <SUBMITTER_ID namespace="GEO">GSM1422184</SUBMITTER_ID>
    </IDENTIFIERS>
    <TITLE>GSM1422184: astrocyte_senescent_rep2; Homo sapiens; RNA-Seq</TITLE>
    <STUDY_REF accession="SRP043644" refname="GSE58910">
      <IDENTIFIERS>
        <PRIMARY_ID>SRP043644</PRIMARY_ID>
      </IDENTIFIERS>
    </STUDY_REF>
    <DESIGN>
      <DESIGN_DESCRIPTION/>
      <SAMPLE_DESCRIPTOR accession="SRS649461">
        <IDENTIFIERS>
          <PRIMARY_ID>SRS649461</PRIMARY_ID>
          <EXTERNAL_ID namespace="GEO">GSM1422184</EXTERNAL_ID>
        </IDENTIFIERS>
      </SAMPLE_DESCRIPTOR>
      <LIBRARY_DESCRIPTOR>
        <LIBRARY_STRATEGY>RNA-Seq</LIBRARY_STRATEGY>
        <LIBRARY_SOURCE>TRANSCRIPTOMIC</LIBRARY_SOURCE>
        <LIBRARY_SELECTION>cDNA</LIBRARY_SELECTION>
        <LIBRARY_LAYOUT>
          <SINGLE/>
        </LIBRARY_LAYOUT>
        <LIBRARY_CONSTRUCTION_PROTOCOL>Total RNA was isolated using the RNeasy Mini Kit (Qiagen; Valencia, CA) according to the manufacturer’s instructions and the concentration was determined using a NanoDrop ND-1000 spectrophotometer (NanoDrop; Rockland, DE) Libraries were prepared by selecting poly-A-containing mRNA from total cellular RNA using the Dynabeads mRNA direct kit (Life technologies). The mRNA was fragmented and a 5’phosphate was then added using T4 polynucleotide kinase (Life technologies). A 15% TBE-urea gel was used to size select the library for fragmented products of 60-200 nucleotides. The ends of the fragmented products were ligated with Illumina v1.5 RNA adapters using T4 RNA ligase 2 (New England Biolabs). Superscript II reverse transcriptase (Life technologies) was used to generate a cDNA library that was PCR-amplified using Phusion HiFi DNA polymerase (New England Biolabs). The cDNA library was purified on a 6% TBE gel (Life technologies). The quality of the library was verified prior to sequencing by cloning into Zero Blunt TOPO (Life technologies) and analyzing 6-10 clones by standard sequencing to determine the diversity of the library products, the abundance of rRNA, appropriate size of the products, and the presence of adapters. T he verified size-selected poly-A stranded cDNA library was submitted to the Next-Generation Sequencing Core (NGSC) University of Pennsylvania, Philadelphia PA for sequencing. The Illumina Solexa GAII platform was used to obtain 50-bp single-end sequencing reads, which were analyzed using the v1.5 pipeline.</LIBRARY_CONSTRUCTION_PROTOCOL>
      </LIBRARY_DESCRIPTOR>
    </DESIGN>
    <PLATFORM>
      <ILLUMINA>
        <INSTRUMENT_MODEL>Illumina HiSeq 2000</INSTRUMENT_MODEL>
      </ILLUMINA>
    </PLATFORM>
    <EXPERIMENT_LINKS>
      <EXPERIMENT_LINK>
        <URL_LINK>
          <LABEL>GEO Sample GSM1422184</LABEL>
          <URL>http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1422184</URL>
        </URL_LINK>
      </EXPERIMENT_LINK>
      <EXPERIMENT_LINK>
        <XREF_LINK>
          <DB>gds</DB>
          <ID>301422184</ID>
        </XREF_LINK>
      </EXPERIMENT_LINK>
    </EXPERIMENT_LINKS>
    <EXPERIMENT_ATTRIBUTES>
      <EXPERIMENT_ATTRIBUTE>
        <TAG>GEO Accession</TAG>
        <VALUE>GSM1422184</VALUE>
      </EXPERIMENT_ATTRIBUTE>
    </EXPERIMENT_ATTRIBUTES>
  </EXPERIMENT>
</EXPERIMENT_SET>
