SRX17293190 GSM6513080_r1 SRP394555 PRJNA874432 SRS14857512 GSM6513080 GSM6513080 miRNA-Seq TRANSCRIPTOMIC size fractionation Total RNAs from UCMSCs and CBMSCs at early (passage 4) and late (passage 11) passages were extracted with mirVana miRNA isolation kit (Life Technologies, Gaithersburg, MD, USA) according to the manufacturer's protocol. Ribo-zero kit for rRNA removal;One-stranded cDNA was synthesized using RNA as a template and six-base random primers; The second-stranded cDNA was synthesised by adding buffer, dNTPs and enzymes, followed by purification of the double-stranded cDNA using VAHTSTM DNA Clean Beads. purification of double-stranded cDNA;Accurate quantification of library concentrations with Qubit, determination of library fragment size distribution with Agilent 2100 Bioanalyzer AB SOLiD System SRX17293191 GSM6513081_r1 SRP394555 PRJNA874432 SRS14857513 GSM6513081 GSM6513081 miRNA-Seq TRANSCRIPTOMIC size fractionation Total RNAs from UCMSCs and CBMSCs at early (passage 4) and late (passage 11) passages were extracted with mirVana miRNA isolation kit (Life Technologies, Gaithersburg, MD, USA) according to the manufacturer's protocol. Ribo-zero kit for rRNA removal;One-stranded cDNA was synthesized using RNA as a template and six-base random primers; The second-stranded cDNA was synthesised by adding buffer, dNTPs and enzymes, followed by purification of the double-stranded cDNA using VAHTSTM DNA Clean Beads. purification of double-stranded cDNA;Accurate quantification of library concentrations with Qubit, determination of library fragment size distribution with Agilent 2100 Bioanalyzer AB SOLiD System SRX17293192 GSM6513082_r1 SRP394555 PRJNA874432 SRS14857514 GSM6513082 GSM6513082 miRNA-Seq TRANSCRIPTOMIC size fractionation Total RNAs from UCMSCs and CBMSCs at early (passage 4) and late (passage 11) passages were extracted with mirVana miRNA isolation kit (Life Technologies, Gaithersburg, MD, USA) according to the manufacturer's protocol. Ribo-zero kit for rRNA removal;One-stranded cDNA was synthesized using RNA as a template and six-base random primers; The second-stranded cDNA was synthesised by adding buffer, dNTPs and enzymes, followed by purification of the double-stranded cDNA using VAHTSTM DNA Clean Beads. purification of double-stranded cDNA;Accurate quantification of library concentrations with Qubit, determination of library fragment size distribution with Agilent 2100 Bioanalyzer AB SOLiD System SRX17293193 GSM6513083_r1 SRP394555 PRJNA874432 SRS14857515 GSM6513083 GSM6513083 miRNA-Seq TRANSCRIPTOMIC size fractionation Total RNAs from UCMSCs and CBMSCs at early (passage 4) and late (passage 11) passages were extracted with mirVana miRNA isolation kit (Life Technologies, Gaithersburg, MD, USA) according to the manufacturer's protocol. Ribo-zero kit for rRNA removal;One-stranded cDNA was synthesized using RNA as a template and six-base random primers; The second-stranded cDNA was synthesised by adding buffer, dNTPs and enzymes, followed by purification of the double-stranded cDNA using VAHTSTM DNA Clean Beads. purification of double-stranded cDNA;Accurate quantification of library concentrations with Qubit, determination of library fragment size distribution with Agilent 2100 Bioanalyzer AB SOLiD System