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Updated: Jun 9, 2026

Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering
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Fouling-Free Inertial Microfluidic Cell Clarification for Lentivirus Manufacturing.

Dohyun Park1, Alexander Bevacqua1,2,3, Mingyang Cui1

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.

Biotechnology and Bioengineering
|June 8, 2026
PubMed
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This summary is machine-generated.

A novel microfluidic cell clarification system achieves over 95% lentiviral vector (LVV) recovery, overcoming bottlenecks in gene therapy manufacturing. This fouling-free technology offers a scalable and efficient alternative to traditional filtration methods.

Area of Science:

  • Biotechnology
  • Gene Therapy Manufacturing
  • Process Engineering

Background:

  • Lentiviral vectors (LVVs) are crucial for gene therapy, but their large-scale production is hindered by inefficient harvest clarification.
  • Conventional depth filtration methods often lead to significant product loss, impacting manufacturing yields.

Purpose of the Study:

  • To develop and evaluate a fouling-free microfluidic cell clarification (MCC) system for high-efficiency lentiviral vector (LVV) recovery.
  • To establish a quantitative relationship between clarification efficiency, throughput, and operational parameters for LVV manufacturing.

Main Methods:

  • A microfluidic cell clarification (MCC) system was designed and optimized by controlling harvest flow rate and cell density.
  • Clarification efficiency and throughput were quantitatively assessed under various operating conditions.

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  • Performance was benchmarked against conventional cellulose depth filtration processes.

    • Main Results:

    • The MCC system achieved over 95% LVV product recovery and over 95% cell removal efficiency under optimized conditions.
    • LVV recovery closely matched theoretical models, indicating minimal product loss within the device.
    • The MCC demonstrated superior recovery compared to a benchmark depth filtration process across multiple batches.
    • Scalability was confirmed up to 1.5 L/h flow rate without compromising clarification efficiency.

    Conclusions:

    • The fouling-free MCC system offers a highly efficient and scalable solution for lentiviral vector clarification in biomanufacturing.
    • This technology presents a significant advancement over conventional filtration, minimizing product loss and improving yields.
    • The MCC platform shows broad applicability for clarifying cell-based therapeutic products, providing a continuous, low-shear alternative.