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Related Concept Videos

Bioreactor Design and Operational System01:29

Bioreactor Design and Operational System

Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
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Bioreactor Controls-III

Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Upstream Processing

Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...
Designing Growth Media for Bioreactors01:30

Designing Growth Media for Bioreactors

Growth media provide essential nutrients that support cell growth and metabolism, thereby enhancing the yield of valuable products such as enzymes, antibiotics, and biomass. Designing an effective growth medium involves balancing all components to prevent nutrient limitations or toxic excesses, both of which can impair growth and reduce product yields.Composition of a Typical Growth MediumA typical growth medium contains carbon and nitrogen sources, salts, vitamins, trace elements, and...
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In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...
Stem Cell Culture01:17

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...

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Related Experiment Video

Updated: May 12, 2026

Production of Human Neurogenin 2-Inducible Neurons in a Three-Dimensional Suspension Bioreactor
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Bioreactor engineering of stem cell environments.

Nina Tandon1, Darja Marolt, Elisa Cimetta

  • 1Department of Biomedical Engineering, Columbia University, New York, NY, United States.

Biotechnology Advances
|March 28, 2013
PubMed
Summary
This summary is machine-generated.

Engineering stem cell environments with advanced biomaterials and bioreactors enhances their therapeutic potential. This review explores innovations and challenges in translating these stem cell therapies to clinical applications.

Keywords:
BioengineeringBiomaterialsBioreactorsHigh-throughput screeningIn vitro modelsModels of diseasePersonalized medicineRegenerative medicineStem cellsTranslation

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Area of Science:

  • Biomedical Engineering
  • Stem Cell Biology
  • Regenerative Medicine

Background:

  • Standard cell cultures lack the in vivo complexity for accurate biological modeling.
  • Stem cells offer revolutionary potential for therapies, disease models, and drug screening.
  • Biophysical cues and 3D interactions are critical for stem cell function.

Purpose of the Study:

  • To review advances in engineering stem cell environments.
  • To discuss novel biomaterials and bioreactor technologies for stem cell applications.
  • To identify challenges in translating stem cell therapies to clinical practice.

Main Methods:

  • Review of current literature on biomaterials for stem cell culture.
  • Analysis of bioreactor technologies for mimicking in vivo conditions.
  • Discussion of translational challenges in stem cell therapy development.

Main Results:

  • Novel biomaterials and bioreactors significantly improve stem cell function and relevance.
  • Engineered environments enhance the biological relevance of stem cell models.
  • Progress in stem cell environment engineering is crucial for therapeutic development.

Conclusions:

  • Advanced biomaterials and bioreactors are key to unlocking stem cell potential.
  • Overcoming translational hurdles is essential for clinical application of stem cell therapies.
  • Continued innovation in stem cell environment engineering will drive medical advancements.