Gloves for Cell and Gene Therapy Manufacturing
6/15/26, 4:00 AM
Why the fastest-growing segment of biopharmaceutical production demands a uniquely rigorous approach to hand protection
1. WHY CELL AND GENE THERAPY IS DIFFERENT
Cell and gene therapy (CGT) manufacturing occupies a unique position within the biopharmaceutical industry. Unlike traditional pharmaceutical production, where a standardized process may generate large numbers of identical doses, many CGT products particularly autologous cell therapies are manufactured as individual patient-specific batches.
As a result, contamination can have significant consequences. A contamination event may not simply affect a production batch; it may result in the loss of a therapy intended for a specific patient, potentially causing treatment delays and requiring remanufacturing where possible.
This places exceptional importance on contamination control throughout the manufacturing process. Cleanroom consumables, including gloves, play an important role in maintaining aseptic conditions and protecting product quality. The gloves worn by operators handling patient-derived materials, cell cultures, or critical process equipment form part of the overall contamination control strategy.
2. THE CLEANROOM ENVIRONMENT
CGT manufacturing is performed under current Good Manufacturing Practice (cGMP) requirements using controlled cleanroom environments designed to minimize contamination risks.
Critical aseptic processing activities are commonly conducted in environments that achieve ISO Class 5 air cleanliness, which permits no more than 3,520 particles of 0.5 μm or larger per cubic metre of air. Supporting cleanroom areas are typically designed to meet ISO Class 7 or ISO Class 8 requirements, depending on the process and facility design.
Many facilities use biological safety cabinets (BSCs), restricted-access barrier systems (RABS), or isolators to provide highly controlled environments for critical manipulations. These systems are frequently used for operations such as aseptic connections, tube welding, media transfers, and handling of patient-derived materials.
Because many CGT processes involve delicate manual manipulations, gloves must provide an appropriate balance of dexterity, tactile sensitivity, comfort, and barrier protection.
3. WHAT MAKES A CGT-GRADE GLOVE
Several characteristics are commonly considered when selecting gloves for CGT manufacturing environments.
Sterility
Gloves used in critical aseptic operations are typically terminally sterilized and supplied with a validated sterility assurance level (SAL), commonly 10⁻⁶. Manufacturers generally provide supporting sterilization validation documentation.
Low Particulate Generation
Particle shedding from gloves can contribute to cleanroom contamination. For this reason, cleanroom gloves are manufactured and processed to minimize particulate release. Many suppliers verify cleanliness through particulate testing and provide supporting data in product documentation.
Low Endotoxin Levels
Endotoxins are bacterial cell-wall components that can affect product quality and patient safety. Consequently, many facilities specify low-endotoxin gloves for critical processing applications. Sterile cleanroom gloves are often supplied with documented endotoxin specifications.
Chemical Compatibility
Operators routinely sanitize gloved hands using disinfectants such as isopropyl alcohol (IPA), hydrogen peroxide-based agents, and sporicidal disinfectants. Gloves should maintain their barrier properties and physical integrity throughout repeated exposure to the chemicals used within the facility.
Biocompatibility
Materials used in cleanroom gloves should not introduce substances that could adversely affect product quality. Testing such as ISO 10993-5 cytotoxicity assessment may be considered when evaluating glove suitability, particularly in applications where contamination control requirements are especially stringent.
4. ISOLATOR GLOVES: A SPECIAL CASE
Isolator-based manufacturing introduces additional considerations beyond those associated with standard cleanroom gloves.
Isolator gloves must be compatible with the glove-port system, withstand repeated decontamination cycles, and maintain barrier integrity throughout their service life. Vaporized hydrogen peroxide (VHP) compatibility is often a key selection criterion because many isolators use VHP during routine decontamination.
Ergonomics are also important. Operators may perform detailed manipulations through glove ports for extended periods, making comfort, flexibility, and tactile sensitivity important considerations.
A range of glove materials is available for isolator applications, including nitrile, chlorosulfonated polyethylene (CSM), EPDM, and butyl rubber. Selection depends on factors such as chemical resistance, VHP compatibility, durability, flexibility, and the specific requirements of the isolator system.
5. PACKAGING, GOWNING AND PROCESS CONTROLS
The effectiveness of a cleanroom glove depends not only on its material properties but also on how it is introduced and used within the manufacturing environment.
Sterile cleanroom gloves are commonly supplied in validated cleanroom packaging systems, often incorporating multiple packaging layers to support aseptic gowning procedures. Proper gowning techniques help prevent contamination of the glove's outer surface before entering critical processing areas.
Many facilities also implement defined procedures for glove sanitization, inspection, replacement, and response to glove damage or contamination events. Glove replacement frequency is typically determined through site-specific procedures and contamination-control risk assessments.
Because CGT manufacturing requires high levels of process consistency and traceability, supply reliability and lot-to-lot consistency are important considerations when selecting glove suppliers.
6. A PRACTICAL SELECTION CHECKLIST
When evaluating gloves for CGT manufacturing, organizations commonly consider the following questions:
Is the glove terminally sterilized and supplied with supporting sterility validation documentation?
Is particulate cleanliness data available?
Are endotoxin specifications documented?
Has the glove undergone relevant biocompatibility or cytotoxicity testing where required?
Is the material compatible with the disinfectants used in the facility?
For isolator applications, is the glove compatible with the port system and VHP decontamination process?
Does the supplier provide batch-level documentation and traceability?
The answers to these questions should be evaluated within the context of the facility's contamination-control strategy, process requirements, and regulatory obligations.
Hand Protection at the Frontier of Medicine
Cell and gene therapy manufacturing represents one of the most technically demanding areas of modern biopharmaceutical production. Because many products are patient-specific and produced in highly controlled aseptic environments, contamination control remains a central operational priority.
Gloves are one component of a broader contamination-control system that includes facility design, environmental monitoring, gowning practices, operator training, and validated manufacturing procedures. Selecting appropriate gloves and ensuring their consistent quality and supply helps support the reliable manufacture of advanced therapies intended for patients with serious medical conditions.
KEY TAKEAWAYS
Many CGT products, particularly autologous therapies, are manufactured as patient-specific batches, increasing the importance of contamination control.
Gloves used in critical CGT operations are commonly selected based on sterility, cleanliness, low endotoxin levels, chemical compatibility, and suitability for the intended manufacturing process.
Isolator applications require additional evaluation of glove-port compatibility, VHP resistance, durability, and ergonomics.
Effective contamination control depends not only on glove selection but also on packaging, gowning, sanitization, inspection, and replacement procedures.
Documentation, traceability, and supplier consistency are important considerations in regulated CGT manufacturing environments.
- The Glove Academy Team