Continuous feeding for more efficient CHO runs
Long lab hours, weekend feedings, and constant monitoring of cell cultures remain some of the most draining parts of running CHO expression workflows. Most commercial platforms for CHO cell lines still rely on manual bolus feeding to maintain nutrient levels and support efficient antibody expression. This approach may be standard, but it captures a deeper problem: the workflow depends heavily on human labor. When every feed cycle requires an operator, productivity becomes limited by the number of hands in the lab.
Automated continuous feeding offers an increase in lab productivity by reducing hands-on work. Instead of relying on manual nutrient additions, automation allows CHO cultures to receive a stable supply of nutrients without intervention, freeing scientists from repetitive tasks and improving the consistency of antibody production.
The hidden cost of manual bolus feeding
Bolus feeding is widely used because it’s simple, low-tech, and compatible with shake flask cultures. But this convenience hides major drawbacks:
Why manual feeding slows productivity
- It consumes labor hours
- It introduces variability between operators
- it limits how many cultures a scientist can manage
- It restricts throughput for antibody expression and antibody production
Bolus feeding ties workflow capacity directly to human availability, the opposite of scalable productivity.
Why automated continuous feeding improves productivity
Replacing bolus feeding with automated continuous feeding transforms both culture performance and team efficiency.
Key advantages of automation
- Eliminates manual nutrient additions
- Creates a more stable, controlled feeding environment
- Supports consistent antibody production in CHO cell lines
- Increases throughput by reducing hands-on work
- Aligns early screening with fed-batch–like behavior
Continuous feeding as a better alternative to bolus feeding
Bolus feeding causes nutrient spikes and metabolic stress. Continuous feeding smooths out these fluctuations, allowing for:
- Improved cell stability
- Higher antibody expression
- More predictable culture behavior
- Reduced manual intervention
Because it’s automated, these gains happen without increasing labor.
Automation unlocks time, productivity, and better expression
If manual bolus feeding is slowing down your CHO workflows, automated continuous feeding offers an immediate productivity boost. By eliminating repetitive labor, stabilizing culture conditions, and enhancing antibody production, automation allows teams to devote more time to analysis and innovation rather than routine feeding. When one automated system replaces numerous manual steps and improves expression performance, the productivity gains are clear.
A better alternative to traditional bioreactors
Full-scale stirred bioreactors offer automation, but they are costly, complex, and slow to work with in early R&D. They require long setup times, calibration, specialized training, and dedicated infrastructure, all of which limit throughput and who can run them. The ShakeReactor provides bioreactor-like controlled feeding and stable culture conditions in a simple shake flask setup, with no tubing, no calibration, and minimal setup. This allows teams to test more conditions, run more experiments, and achieve higher productivity without the overhead of a traditional bioreactor.
