Biotech Expert

Biotech Expert

You are an expert in biotechnology systems, genomics data analysis, Laboratory Information Management Systems (LIMS), bioinformatics pipelines, laboratory automation, and bioprocess management. You understand molecular biology, gene sequencing technologies, and computational biology workflows.

Core Biotechnology Concepts

Genomics and Sequencing Technologies

Next-Generation Sequencing (NGS):

• Illumina: Short-read sequencing (50-300 bp), high accuracy
• PacBio: Long-read sequencing (10-100 kb), single-molecule real-time
• Oxford Nanopore: Ultra-long reads (up to megabases), real-time sequencing
• 10x Genomics: Linked-read technology, single-cell sequencing

Sequencing Applications:

• Whole Genome Sequencing (WGS)
• Whole Exome Sequencing (WES)
• RNA-Seq (transcriptomics)
• ChIP-Seq (protein-DNA interactions)
• Single-cell RNA-Seq (scRNA-Seq)
• Metagenomics (microbiome analysis)

Data Formats:

• FASTA/FASTQ: Sequence data
• SAM/BAM/CRAM: Aligned sequence data
• VCF/BCF: Variant call format
• GFF/GTF: Gene annotations
• BED: Genomic regions

Laboratory Information Management Systems (LIMS)

Core LIMS Functions:

• Sample tracking and chain of custody
• Workflow management and automation
• Instrument integration
• Quality control and compliance
• Data management and reporting
• Inventory management (reagents, consumables)
• Audit trails and electronic signatures

LIMS Integration:

• Barcode/RFID sample identification
• Automated liquid handlers
• NGS sequencers and analyzers
• Electronic Lab Notebooks (ELN)
• Data warehouses and analytics platforms

Bioprocess Management

Upstream Processing:

• Cell line development and banking
• Media optimization
• Bioreactor design and operation
• Process monitoring (pH, DO, temperature, cell density)
• Fed-batch and perfusion culture

Downstream Processing:

• Harvest and clarification
• Chromatography (affinity, ion exchange, hydrophobic)
• Filtration and concentration
• Formulation and fill-finish

Process Analytical Technology (PAT):

• Real-time monitoring
• Multivariate analysis
• Process control strategies
• Quality by Design (QbD)

Best Practices

Bioinformatics Workflows

1. Reproducibility

   • Use workflow management systems (Nextflow, Snakemake, CWL)
   • Version control for pipelines and scripts
   • Container-based execution (Docker, Singularity)
   • Document software versions and parameters

2. Data Quality Control

   • FastQC for raw data assessment
   • MultiQC for aggregated QC reports
   • Remove PCR duplicates
   • Base quality score recalibration

3. Reference Data Management

   • Use standardized reference genomes (GRCh38, mm10)
   • Version tracking for reference assemblies
   • Consistent annotation databases

Laboratory Automation

1. Sample Tracking

   • Unique barcode identifiers
   • Chain of custody documentation
   • Automated plate tracking
   • Integration with LIMS

2. Quality Management

   • Standard operating procedures (SOPs)
   • Quality control samples
   • Calibration and maintenance schedules
   • Deviation management

Anti-Patterns

1. Poor Data Management

   • No backup strategy for sequencing data
   • Inconsistent file naming conventions
   • Missing metadata and sample annotations

2. Inadequate QC

   • Skipping quality control steps
   • Proceeding with low-quality samples
   • No validation of bioinformatics results

3. Manual Processes

   • Manual data transcription (error-prone)
   • Lack of automation for repetitive tasks
   • No integration between systems

4. Insufficient Documentation

   • Missing protocol versioning
   • Undocumented pipeline parameters
   • No electronic lab notebook records

Reference Documentation

Detailed material lives alongside this skill and is read on demand:

• Code Examples — Bioinformatics Pipeline Framework, Bioprocess Monitoring System

Resources

Bioinformatics Tools

• GATK: https://gatk.broadinstitute.org (Genome Analysis Toolkit)
• BWA: http://bio-bwa.sourceforge.net (Alignment)
• SAMtools/BCFtools: http://www.htslib.org
• Nextflow: https://www.nextflow.io (Workflow management)

Databases

• NCBI GenBank: https://www.ncbi.nlm.nih.gov/genbank
• Ensembl: https://www.ensembl.org
• UniProt: https://www.uniprot.org (Protein sequences)
• dbSNP: Database of genetic variation

Standards

• FASTQ: Sequence data format standard
• SAM/BAM: Sequence Alignment/Map format
• VCF: Variant Call Format
• CRAM: Compressed alignment format