Uncovering complexity
To identify the genetic drivers of neurological, neuromuscular, and neurodegenerative disorders scientists must have access to the complete genomic landscape, including regions previously deemed impossible to sequence, and the tools to examine the full range of genomic variation.
The PacBio Systems using Single Molecule, Real-Time (SMRT) Sequencing provide exceptionally long reads, uniform coverage and high consensus accuracy. This technology enables scientists to gain a more comprehensive understanding of the genetic basis of neurological disease through:
- Targeting candidate genes with pre-designed capture panels or long-range PCR to enrich and sequence multi-kilobase fragments.
- Phase alleles and screen for variants including SNPs, complex structural variants like repeat expansions, and long homopolymers.
- Sequence full-length isoforms of disease-relevant genes to characterize the complete landscape of gene-specific transcripts.
- Detect epigenetic signatures for a more complete picture of the underlying biological disease mechanisms.
Spotlight: Disease-causing mobile element identified with SMRT Sequencing
Scientists reported identification of an intronic structural variant that causes the neurodegenerative Mendelian disorder X-linked dystonia-parkinsonism (XDP) using transcriptome sequencing. Explore this research further.
Aneichyk, T. et al., 2018. Dissecting the causal mechanism of X-linked Dystonia-Parkinsonism by integrating genome and transcriptome assembly. Cell, 172(5), pp.897–909.e21.
Spotlight: CRISPR/Cas9 and SMRT Sequencing provide insights into Parkinson’s disease
Scientists used CRISPR/Cas9 in combination with long-read SMRT Sequencing to characterize complete repeat expansions and identify a novel phenotype-genotype correlation between Parkinson’s disease and the ATXN10 repeat expansion. Explore this research further.
Schüle, B. et al., 2017. Parkinson’s disease associated with pure ATXN10 repeat expansion. Parkinson’s Disease, 3(27).
Selected Resources
- Cumming, Sarah A et al. (2018) De novo repeat interruptions are associated with reduced somatic instability and mild or absent clinical features in myotonic dystrophy type 1. European Journal of Human Genetics
- Höijer, Ida et al. (2018) Detailed analysis of HTT repeat elements in human blood using targeted amplification-free long-read sequencing. Human Mutation
- Song, Janet et al. (2018) Characterization of a human-specific tandem repeat associated with bipolar disorder and schizophrenia BioRxiv
- Aneichyk, Tatsiana et al. (2018) Dissecting the causal mechanism of X-linked Dystonia-Parkinsonism by integrating genome and transcriptome assembly. Cell
- Ebbert, Mark T. W. et al. (2018) Long-read sequencing across the C9orf72 ‘GGGGCC’ repeat expansion: implications for genetic discovery efforts in human disease BioRxiv
- Ardui, Simon et al. (2018) Single molecule real-time (SMRT) sequencing comes of age: applications and utilities for medical diagnostics. Nucleic Acids Research
- Tseng, Elizabeth et al. (2017) Altered expression of the FMR1 splicing variants landscape in premutation carriers. Biochimica et Biophysica Acta
- Schüle, Birgitt et al. (2017) Parkinsons disease associated with pure ATXN10 repeat NPJ Parkinson's Disease
- Korlach, Jonas et al. (2017) De novo PacBio long-read and phased avian genome assemblies correct and add to reference genes generated with intermediate and short reads. GigaScience
- Seppälä, Hanna et al. (2017) Single-molecule sequencing revealing the presence of distinct JC polyomavirus populations in patients with progressive multifocal leukoencephalopathy. The Journal of Infectious Diseases
- Ardui, Simon et al. (2017) Detecting AGG Interruptions in Male and Female FMR1 Premutation Carriers by Single-Molecule Sequencing. Human Mutation
- Brykczynska, Urszula et al. (2016) CGG repeat-induced FMR1 silencing depends on the expansion size in human iPSCs and neurons carrying unmethylated full mutations. Stem Cell Reports
- Hartley, Stephen W et al. (2016) Alternative isoform analysis of Ttc8 expression in the rat pineal gland using a multi-platform sequencing approach reveals neural regulation. PLoS One
- Tombácz, Dóra et al. (2016) Full-length isoform sequencing reveals novel transcripts and substantial transcriptional overlaps in a herpesvirus. PLoS One
- Ashley, Euan A et al. (2016) Towards precision medicine. Nature Reviews. Genetics
- Chaisson, Mark J P et al. (2015) Genetic variation and the de novo assembly of human genomes. Nature Reviews. Genetics
- McFarland, Karen N. et al. (2015) SMRT Sequencing of long tandem nucleotide repeats in SCA10 reveals unique insight of repeat expansion structure. PLoS One
- Koskinen, Lotta L E et al. (2015) Identification of a common risk haplotype for canine idiopathic epilepsy in the ADAM23 gene. BMC Genomics
- You, Xintian et al. (2015) Neural circular RNAs are derived from synaptic genes and regulated by development and plasticity. Nature Neuroscience
- Chaisson, Mark J P et al. (2015) Resolving the complexity of the human genome using single-molecule sequencing. Nature
- Doolan, Kyle M et al. (2015) Conformation dependent epitopes recognized by prion protein antibodies probed using mutational scanning and deep sequencing. Journal of Molecular Biology
- Pretto, Dalyir I et al. (2015) Differential increases of specific FMR1 mRNA isoforms in premutation carriers. Journal of Medical Genetics
- Treutlein, Barbara et al. (2014) Cartography of neurexin alternative splicing mapped by single-molecule long-read mRNA sequencing. Proceedings of the National Academy of Sciences of the United States of America
- Poster: Clark, Tyson A. et al. (2018) Amplification-free targeted enrichment and SMRT Sequencing of repeat-expansion genomic regions
- Poster: Chakraborty, Shreyasee et al. (2018) Mitochondrial DNA sequencing using PacBio SMRT technology
- Poster: Ekholm, J. et al. (2017) Screening for causative structural variants in neurological disorders using long-read sequencing
- Poster: Ekholm, Jenny et al. (2017) Screening and characterization of causative structural variants for bipolar disorder in a significantly linked chromosomal region onXq24-q27 in an extended pedigree from a genetic isolate
- Poster: Clark, T. A. et al. (2017) Targeted SMRT Sequencing of difficult regions of the genome using a Cas9, non-amplification based method
- Poster: Eng, K. et al. (2016) Target enrichment using a neurology panel for 12 barcoded genomic DNA samples on the PacBio SMRT Sequencing platform
- Poster: Tassone, F. et al. (2016) Alternative splicing in FMR1 premutations carriers
- Poster: Kujawa, S. et al. (2016) A method for the identification of variants in Alzheimer’s disease candidate genes and transcripts using hybridization capture combined with long-read sequencing
- Poster: Sethuraman, A. et al. (2016) Characterization of the Poly-T variants in the TOMM40 gene using PacBio long reads
- Poster: Ekholm, J. et al. (2016) Enrichment of unamplified DNA and long-read SMRT Sequencing to unlock repeat expansion disorders
- Poster: Jenny Gu, Kevin Eng, Anand Sethuraman, Steve Kujawa et al. (2016) Multiplex target enrichment using barcoded multi-kilobase fragments and probe-based capture technologies
- Poster: Ekholm, Jenny et al. (2016) Candidate gene screening using long-read sequencing
- Poster: Ekholm, Jenny et al. (2016) Enrichment of unamplified DNA and long-read SMRT Sequencing in unlocking the underlying biological disease mechanisms of repeat expansion disorders
- Poster: Baybayan, Primo et al. (2016) Application specific barcoding strategies for SMRT Sequencing
- McFarland, Karen (2017) ASHG PacBio Workshop: Expansion sequence variations underlie distinct disease phenotypes in SCA10
- Ameur, Adam (2017) AGBT Virtual Poster: Analysis method for amplification-free SMRT sequencing and assessment on repeat expansions in Huntington’s disease
- Clark, T. A. and Tsai, Y. and Greenberg, D. (2017) Targeted SMRT Sequencing of difficult regions of the genome using a Cas9, non-amplification based method
- Paulin, Lars (2017) AGBT Virtual Poster: Single-molecule sequencing reveals the presence of distinct JC polyomavirus populations in patients with progressive multifocal leukoencephalopathy
- Korlach, Jonas (2016) ASHG PacBio Workshop: A future of high-quality genomes, transcriptomes, and epigenomes
- Lutz, Michael (2016) ASHG PacBio Workshop: Identification and characterization of informative genetic structural variants for neurodegenerative diseases
- Ashley, Euan (2016) ASHG PacBio Workshop: Towards precision medicine
- Tassone, F. and Olaby, R. and Tang, H. and Hickey, L and Tseng, E. (2016) ASHG Virtual Poster: Alternative splicing in FMR1 premutations carriers
- Wenger, Aaron (2016) Video: Using the Integrative Genomics Viewer (IGV) to visualize PacBio long-read SMRT Sequencing data
- Ekholm, J. and Tsai, Y. and Greenberg, D. and Clark, T. (2016) ASHG Virtual Poster: Enrichment of unamplified DNA and long-read SMRT Sequencing to unlock repeat expansion disorders
- Ashizawa, Tetsuo (2016) Nature Webinar: Large interrupted pentanucleotide repeats of SCA10
- Application Brief: Long-read RNA sequencing – Best Practices. (2018)
- Application Brochure: No-Amp targeted sequencing. (2018)
- SMRT Sequencing Brochure: Revolutionize genomics with SMRT Sequencing. (2018)
- PacBio Certified Service Providers (2018)
- Infographic: Structural Variants and Disease (2017)
- Human Biomedical Research Brochure: The most comprehensive view of the human genome (2017)
- Application Note: Multiplex target enrichment using barcoded multi-kilobase fragments and probe-based capture technologies. (2016)
- Epigenetics Application Brochure: Characterize the epigenetic landscape of your genome. (2016)