GP2 ❤️ Open Science 😍
Last Updated: January 2024
The following repository encompasses all scripts developed and used in the manuscript titled "African ancestry neurodegeneration risk variant disrupts an intronic branchpoint in GBA1". This study explores the disease risk mechanism for the non-coding GBA1 rs3115534 variant.
Update with a link to pre-print here
This is a follow-up to the first largest genome-wide assessment of Parkinson’s disease in the African and African admixed populations, published here:
Rizig M*, Bandrés-Ciga S*, Makarious MB*, ..., Singleton AB, Okubadejo N, on behalf of the Global Parkinson’s Genetics Program: “Genome-wide Association Identifies Novel Etiological Insights Associated with Parkinson’s Disease in African and African Admixed Populations” Lancet Neurology (2023); https://doi.org/10.1016/S1474-4422(23)00283-1
All generated LCL Coriell ONT DNAseq, CAGEseq and RNAseq data (ILM and ONT) is available at https://www.amp-pd.org/ via GP2 tier 2 access. AMP-PD ILM blood based RNAseq is available at https://www.amp-pd.org/ after signing the data use agreement. 1000 Genomes project data is publicly available at https://www.internationalgenome.org/. All generated brain tissue bulk RNAseq data (ONT) is currently being submitted to the NIMH data sharing platform at https://nda.nih.gov/.
- The
analyses/directory includes all analyses discussed in the manuscript - The
figures/directory includes all figures and supplemental figures referenced in the manuscript (pending publication) - The
tables/directory includes all tables and supplemental tables referenced in the mansucript (pending publication)
Languages: Bash, R, Python
Each analysis directory has:
- A notebook that calls the scripts
- A collection of scripts called in the notebook
An overview of the analysis directories in order:
| Analysis Directory | Description |
|---|---|
| OO_ONT_RNA | 1) Process raw ONT RNAseq data from basecalling to mapping. 2) Calculate coverage across regions and generate plots. 3) Get TPMs for GBA1 transcripts. |
| 01_Illumina_RNA | 1) Map Illumina RNA data (fastq). 2) Calculate coverage across regions and generate plots. |
| 02_ONT_DNA | 1) Process raw ONT RNAseq data from base calling to mapping. |
| 03_Branchpoint_predictions | 1) Generate branch point probabilities and generate plot. |
| 04_HBCC_10X | 1) Process raw ONT single-nuclei data from basecalling to mapping. 2) Split out data by cell types. 3) Calculate coverage across regions and generate plots. 4) Plot barcode sequence diversity. |
(pending publication)
(pending publication)
| Software | Version(s) | Resource URL | RRID | Notes |
|---|---|---|---|---|
| Guppy | 6.1.2 | https://community.nanoporetech.com/docs/prepare/library_prep_protocols/Guppy-protocol/v/gpb_2003_v1_revax_14dec2018/guppy-software-overview | RRID:SCR_023196 | Basecalling Oxford Nanopore R9.4.1 files |
| Integrative Genome Browser | 2.16.0 | https://igv.org/ | RRID:SCR_011793 | Visualization of mapped sequenced files and transcripts |
| Minimap2 | 2.24 and 2.26 | https://github.com/lh3/minimap2 | RRID:SCR_018550 | Mapping of long-read sequencing files |
| Pychopper | 2.7.1 | https://github.com/epi2me-labs/pychopper | RRID:SCR_018966 | Identify, orient, and trim Oxford Nanopore cDNA full length reads |
| PycoQC | 2.5.2 | https://a-slide.github.io/pycoQC/ | RRID:SCR_024185 | Generate quality reports for Oxford Nanopore sequencing runs |
| Python Programming Language | 3.10 | http://www.python.org/ | RRID:SCR_008394 | pandas;seqio; Used for sorting through fastq files and data manipulation |
| R Project for Statistical Computing | 4.3 | http://www.r-project.org/ | RRID:SCR_001905 | branchpointer;dplyr;ggplot2;Used for generating coverage plots, running regression, and calculating branch point probabilities. |
| Seqkit | 2.2.0 | https://bioinf.shenwei.me/seqkit/ | RRID:SCR_018926 | Generate sequencing statistics from Oxford Nanopore raw data |
| STAR | 2.7.10 | https://github.com/alexdobin/STAR | RRID:SCR_004463 | Mapping of short-read sequencing files |
| Stringtie2 | 2.2.1 | https://ccb.jhu.edu/software/stringtie/ | RRID:SCR_016323 | Transcript calling and quantification |
| Samtools | 1.17 | http://www.htslib.org/ | RRID:SCR_002105 | Calculate sequencing depth, subset bams, convert bams to fastq |