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Cdr2 siRNA knockdown during passage through mitosis: HeLa cells, Rat1 wild type and c-myc null cells

ABSTRACT: cdr2 siRNA knockdown during passage through mitosis: HeLa cells, Rat1 wild type and c-myc null cells

PROVIDER: PRJNA124295 | ENA |

REPOSITORIES: ENA

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cdr2 siRNA knockdown during passage through mitosis: HeLa cells, Rat1 wild type and c-myc null cells

2010-04-07 | GSE20037 | GEO

cdr2 siRNA knockdown during passage through mitosis: HeLa cells, Rat1 wild type and c-myc null cells

Project description:[Hela cells]: We performed cdr2 knockdown with a pool of 4 cdr2-specific siRNAs to test whether cdr2 may regulate c-myc target genes as cells passage through mitosis. [Rat1a wild type and myc null cells]: We performed cdr2 knockdown using a pool of 4 cdr2-specific siRNAs to test whether cdr2 may regulate c-myc target genes as cells passage through mitosis. [HeLa cells]: Cells were transfected with control or cdr2 siRNAs and then cells were synchronized in mitosis using a sequential thymidine/nocodazole block. Cells were subsequently released from nocodazole block and after 3 hours RNA was harvested for microarray analysis [Rat-1 wild type (TGR) and c-myc null (15.19) cells]: Cells were transfected with control or cdr2 siRNAs and then cells were synchronized in mitosis using a sequential thymidine/nocodazole block. Cells were then subsequently released from nocodazole block and after 3 hours RNA was harvested for microarray analysis

2010-04-07 | E-GEOD-20037 | biostudies-arrayexpress

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Project description:The goal of this experiment was to assess whether transcription happens during mitosis. For this, we isolated mitotic HeLa cells and treated them with a transcription inhibitor, ActD.

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single cell RNA-seq of HeLa CCL2

Project description:We measured 720 HeLa-CCL2 cells (288 from the 9th passage, 288 from the 14th passage and 144 from the 20th passage) in this work on an Illumina HiSeq 4000 platform (sequenced by Novogene, China) for 150 bp paired-end sequencing. The protocol was based on Tang’s modification on SMART-Seq2. Single cells were captured by mouth pipette under the stereomicroscope（Nikon SZM745）and followed by the protocol. Every cell was assigned with 250 M raw data on average.

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Attenuation of Zika Virus by Passage in Human HeLa Cells.

Project description:Zika virus (ZIKV) is a mosquito-borne Flavivirus. Previous studies have shown that mosquito-transmitted flaviviruses, including yellow fever, Japanese encephalitis, and West Nile viruses, could be attenuated by serial passaging in human HeLa cells. Therefore, it was hypothesized that wild-type ZIKV would also be attenuated after HeLa cell passaging. A human isolate from the recent ZIKV epidemic was subjected to serial HeLa cell passaging, resulting in attenuated in vitro replication in both Vero and A549 cells. Additionally, infection of AG129 mice with 10 plaque forming units (pfu) of wild-type ZIKV led to viremia and mortality at 12 days, whereas infection with 103 pfu of HeLa-passage 6 (P6) ZIKV led to lower viremia, significant delay in mortality (median survival: 23 days), and increased cytokine and chemokine responses. Genomic sequencing of HeLa-passaged virus identified two amino acid substitutions as early as HeLa-P3: pre-membrane E87K and nonstructural protein 1 R103K. Furthermore, both substitutions were present in virus harvested from HeLa-P6-infected animal tissue. Together, these data show that, similarly to other mosquito-borne flaviviruses, ZIKV is attenuated following passaging in HeLa cells. This strategy can be used to improve understanding of substitutions that contribute to attenuation of ZIKV and be applied to vaccine development across multiple platforms.

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Hela SPAG4 siRNA

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