Project description:To investigate the differences in miRNA profiles, exosomal and cellular miRNA profiles between hCEp (Human Cervical Epithelia Cells) and Siha cells were generated by deep sequencing, in triplicate, using Illumina GAIIx. qRT–PCR validation was performed using TaqMan and SYBR Green assays
Project description:To identify the miRNAs that are differentially expressed and secreted between the MDA-MB-231 metastatic breast cancer cells and the MCF-10A non-cancerous human mammary epithelial cells, we profiled the cellular and exosomal small RNAs (between 17 and 52 nt) isolated from these two cell lines by Solexa deep sequencing. MiRNAs that are significantly different between the two cell lines are identified. RNA was extracted from cultured MDA-MB-231 and MCF-10A cells or purified exosomes secreted by these cells, and subjected to library construction and Solexa deep sequencing.
Project description:To further identify the most significantly changed miRNA resulting from the different expression levels of TWIST2 in cervical cancer cells, we used a miRNA microarray to identify the miRNA expression profiles among SiHa, SiHa-tw2 and SiHa-shtw2. The significantly deregulated miRNAs (changes of more than 2-fold in expression) included miR-23b-5p, miR-221-3p, miR-502-3p, miR-221-5p, miR-15a-5p, miR-1227, miR-93-5p and miR-4257.
Project description:To identify the miRNAs that are differentially expressed and secreted between the MDA-MB-231 metastatic breast cancer cells and the MCF-10A non-cancerous human mammary epithelial cells, we profiled the cellular and exosomal small RNAs (between 17 and 52 nt) isolated from these two cell lines by Solexa deep sequencing. MiRNAs that are significantly different between the two cell lines are identified.
Project description:Total RNA was isolated from plasma exosomes of two small cell lung cancer patients at the pre- and post-chemoresistant stages. MiRNA sequencing was performed to assess differential expression using next-generation sequencing. The data showed that most miRNAs levels were different in plasma exosomal. Importantly, miR-92b-3p were much higher in the post-chemoresistant stage than in the pre-chemoresistant stage
Project description:Recently, the existence of extracellular miRNAs enclosed in exosomes has raised the possibility that they play an important role in cell-cell communication. To gain more insight into cell-cell communication via exosomal miRNAs, we investigated whether or not tumor cells exposed to hypoxia secrete exosomes which may affect angiogeneic activity. We used SUDHL4 cells, as donor cells, and HUVECs as recipient cells. Exosomes derived from SUDHL4 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h were used for validation of angiogeneic activity, such as tube formation assay. The exosome secreted from SUDHL4 cells in hypoxic condition significantly enhanced tube formation by HUVECs when compared with exosome obtained from SUDHL4 cell in normoxic condition. To identify cellular and exosomal miRNAs universally responding to hypoxic condition, we assess the expression profiles of intercellular and extracellular miRNAs in SUDHL4 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h using Taqman MicroRNA Array v2.0 (Applied Biosystems, Bedford, MA). SUDHL4 cells were cultured for 24 hours under hypoxic conditions (1% O2) or normoxic conditions (20% O2). The exosome fraction was obtained from culture medium using Exoquick Exosome Precipitation Solution (System Biosciences, Mountain View, CA, USA). Isolation of cellular and exosomal miRNAs was performed using the miRNsasy kit (Qiagen). The expression profile of miRNAs was determined using the Human Taqman miRNA Arrays A (Applied Biosystems). RNU6B and a spike control (ath-miR159) were used as an invariant control for the cell and exosome, respectively. QRT-PCR was carried out on an Applied Biosystems 7900HT thermal cycler using the manufacturerM-bM-^@M-^Ys recommended program. Finally, all the raw data from each array was run on Data Assist Software ver.3.1 (Applied Biosystems).
Project description:Recently, the existence of extracellular miRNAs enclosed in exosomes has raised the possibility that they play an important role in cell-cell communication. To gain more insight into cell-cell communication via exosomal miRNAs, we investigated whether or not tumor cells exposed to hypoxia secrete exosomes which may affect angiogeneic activity. We used RPMI8226 cells, as donor cells, and HUVECs as recipient cells. Exosomes derived from RPMI8226 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h were used for validation of angiogeneic activity, such as tube formation assay. The exosome secreted from RPMI8226 cells in hypoxic condition significantly enhanced tube formation by HUVECs when compared with exosome obtained from RPMI8226 cell in normoxic condition. To identify cellular and exosomal miRNAs universally responding to hypoxic condition, we assess the expression profiles of intercellular and extracellular miRNAs in RPMI8226 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h using Taqman MicroRNA Array v2.0 (Applied Biosystems, Bedford, MA). RPMI8226 cells were cultured for 24 hours under hypoxic conditions (1% O2) or normoxic conditions (20% O2). The exosome fraction was obtained from culture medium using Exoquick Exosome Precipitation Solution (System Biosciences, Mountain View, CA, USA). Isolation of cellular and exosomal miRNAs was performed using the miRNsasy kit (Qiagen). The expression profile of miRNAs was determined using the Human Taqman miRNA Arrays A (Applied Biosystems). RNU6B and a spike control (ath-miR159) were used as an invariant control for the cell and exosome, respectively. QRT-PCR was carried out on an Applied Biosystems 7900HT thermal cycler using the manufacturerM-bM-^@M-^Ys recommended program. Finally, all the raw data from each array was run on Data Assist Software ver.3.1 (Applied Biosystems).
Project description:Recently, the existence of extracellular miRNAs enclosed in exosomes has raised the possibility that they play an important role in cell-cell communication. To gain more insight into cell-cell communication via exosomal miRNAs, we investigated whether or not tumor cells exposed to hypoxia secrete exosomes which may affect angiogeneic activity. We used K562 cells, as donor cells, and HUVECs as recipient cells. Exosomes derived from K562 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h were used for validation of angiogeneic activity, such as tube formation assay. The exosome secreted from K562 cells in hypoxic condition significantly enhanced tube formation by HUVECs when compared with exosome obtained from K562 cell in normoxic condition. To identify cellular and exosomal miRNAs universally responding to hypoxic condition, we assess the expression profiles of intercellular and extracellular miRNAs in K562 cells cultured in normoxia (20%) or hypoxia (1%) for 24 h using Taqman MicroRNA Array v2.0 (Applied Biosystems, Bedford, MA). K562 cells were cultured for 24 hours under hypoxic conditions (1% O2) or normoxic conditions (20% O2). The exosome fraction was obtained from culture medium using Exoquick Exosome Precipitation Solution (System Biosciences, Mountain View, CA, USA). Isolation of cellular and exosomal miRNAs was performed using the miRNsasy kit (Qiagen). The expression profile of miRNAs was determined using the Human Taqman miRNA Arrays A (Applied Biosystems). RNU6B and a spike control (ath-miR159) were used as an invariant control for the cell and exosome, respectively. QRT-PCR was carried out on an Applied Biosystems 7900HT thermal cycler using the manufacturerM-bM-^@M-^Ys recommended program. Finally, all the raw data from each array was run on Data Assist Software ver.3.1 (Applied Biosystems).