Diagenode Megaruptor Ultrasonication-Based High-Molecular-Weight DNA Shearing Instrument

Overview

The Diagenode Megaruptor is an ultrasonication-based, benchtop high-molecular-weight (HMW) DNA shearing instrument engineered specifically for next-generation long-read sequencing library preparation. Unlike enzymatic or mechanical fragmentation methods, the Megaruptor employs precisely controlled focused acoustic energy to induce controlled cavitation in aqueous DNA solutions—enabling reproducible, sequence-independent cleavage of genomic DNA without bias toward GC-rich or repetitive regions. This physical shearing mechanism preserves native DNA integrity while delivering fragments within a tunable size range of 2–75 kb—making it uniquely suited for PacBio SMRT, Oxford Nanopore Technologies (ONT), and other third-generation sequencing platforms requiring ultra-long input DNA. Its closed-tube, non-contact design eliminates cross-contamination risks and ensures operator safety by fully containing acoustic energy within sealed microtubes.

Key Features

• Wide, programmable fragment size range: 2 kb to 75 kb—optimized for long-read sequencing input requirements
• Dual-sample processing capability: Independent parameter control for two samples simultaneously, enabling comparative or parallel library prep
• Integrated five-channel automated washing station with precision multi-port valve system—ensures consistent probe cleanliness and prevents carryover between runs
• Full software-driven operation: All steps—including tube loading verification, sonication duration, power intensity, cycle count, and post-shearing wash—are defined and executed via intuitive graphical interface
• No routine calibration required: Factory-calibrated transducer and closed-loop acoustic monitoring ensure long-term stability and inter-instrument reproducibility
• Low-maintenance architecture: Solid-state ultrasonic generator, corrosion-resistant fluidic pathways, and modular consumables reduce downtime and service frequency

Sample Compatibility & Compliance

The Megaruptor accommodates standard 1.5 mL and 2.0 mL low-bind microcentrifuge tubes, supporting inputs from 10 ng to 5 µg of purified HMW genomic DNA in TE buffer or nuclease-free water. It is compatible with downstream enzymatic steps including end-repair, A-tailing, and adapter ligation without requiring purification between shearing and library construction. The system meets essential laboratory safety standards for Class II ultrasonic equipment (IEC 61000-6-3, IEC 61000-6-4) and supports audit-ready workflows compliant with GLP and GMP environments. While not a medical device, its operational logs, parameter traceability, and user-access controls align with FDA 21 CFR Part 11 principles for electronic records when deployed with validated software configurations.

Software & Data Management

Controlled via Diagenode’s proprietary Megaruptor Control Software (v4.x), the system provides role-based user accounts, encrypted method storage, and timestamped run logs—including real-time acoustic power feedback, temperature monitoring, and cycle completion status. Exportable CSV reports include fragment size distribution estimates (derived from optional integrated Qubit/Fragment Analyzer integration), sample ID, operator name, date/time, and all active parameters. The software supports LIMS interoperability through standardized API endpoints and is validated for use in ISO/IEC 17025-accredited laboratories performing nucleic acid QC.

Applications

• Preparation of ultra-long DNA libraries for PacBio HiFi and Revio systems
• Nanopore sequencing library generation (e.g., ONT LSK114, SQK-LSK118)
• Optical mapping (Bionano Genomics) and chromatin conformation capture (Hi-C) sample fragmentation
• Generation of reference-grade synthetic long-read standards for assay validation
• Epigenetic studies requiring intact methylation patterns—where enzymatic digestion would compromise base modifications

FAQ

Does the Megaruptor require specialized training to operate?
No formal certification is required; however, Diagenode provides on-site or remote installation qualification (IQ) and operational qualification (OQ) support, along with standard operating procedure (SOP) templates aligned with ISO 20387 biobanking guidelines.
Can the Megaruptor be integrated into automated liquid handling workflows?
Yes—the instrument features RS-232 and Ethernet interfaces for external triggering and status polling, enabling synchronization with robotic arms and track-based automation platforms.
Is there a recommended maintenance schedule?
Diagenode recommends quarterly visual inspection of the transducer coupling surface and annual performance verification using certified HMW DNA standards (e.g., NA12878 gDNA); no preventive servicing is mandated between verifications.
How does the Megaruptor compare to cryo-focused ultrasonicators?
Unlike cryogenic systems, the Megaruptor operates at ambient temperature with integrated thermal management, eliminating ice formation artifacts and reducing sample handling complexity—while maintaining equivalent fragment size consistency across replicate runs.