Monday, January 13, 2020

QCB Colloquium | Dr. Serghei Mangul

Dr. Serghei Mangul
Assistant Professor, USC School of Pharmacy
Lab Website

Dumpster diving in RNA-sequencing to study the immune receptor repertoires and microbial communities

Thursday, January 16, 2 PM, RRI 101

Abstract: Assay-based approaches provide a detailed view of the adaptive immune system by profiling T- and B-cell receptor (TCR/BCR) repertoires. However, these methods are costly, time-consuming, and lack the scale of RNA sequencing (RNA-seq). The seminar will introduce bioinformatic methods that mine discarded sequences and produce rich research level data including T and B cell receptor sequences, microbiome, genome-wide germline genotypes, and rDNA and mtDNA copy number.  We have applied our methods to GTEx multi-tissue RNA-Seq data (n=8,555) and Profile OncoPanel cancer sequencing data (n=20,000). We validated the accuracy of our methods and showed their utility through replication of known genetic associations. The presented systematic atlas of immunological sequences data contains one of the largest collections of immune receptor sequencing across a broad range of tissue. Additionally, we investigated the functional mechanisms underlying connections between the immune system, microbiome, and disease.

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