Genomics

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Small RNA sequencing of serum collected from mice before and after manifestation of tumor


ABSTRACT: To investigate the effectiveness of performing 5' tRNA half depletion, we evaluated the association of tumor burden on circulating miRNAs present in mouse serum. Three nude mice (NCr) were orthotopically injected with SH-SY5Y human neuroblastoma cells. Serum samples were collected one week before cell injection and two weeks after injection, when mice had palpable tumors. We performed 5' tRNA half depletion using biotinylated probes and streptavidin beads and prepared small RNA libraries using the TruSeq Small RNA Library Prep kit. By depleting the 5' tRNA halves in the serum-derived RNA samples, we were able to detect 3 times more differentially expressed miRNAs when comparing serum from mice carrying orthotopically engrafted tumors with serum from healthy control mice. We detected 34 differentially expressed miRNAs, of which six are unique to humans, 13 unique to mice and 15 have complete conservation between the two species.

ORGANISM(S): Mus musculus

PROVIDER: GSE88728 | GEO | 2017/02/22

SECONDARY ACCESSION(S): PRJNA348374

REPOSITORIES: GEO

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