Xeno-free Conditions
Xeno-free Conditions - Related Videos
11:05
Production and Administration of Therapeutic Mesenchymal Stem/Stromal Cell (MSC) Spheroids Primed in 3-D Cultures Under Xeno-free Conditions
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Cited by 21 •
2017
The therapeutic potential of mesenchymal stem/stromal cells (MSCs) is well-documented, however the best method of preparing the cells for patients remains controversial. Herein, we communicate protocols to efficiently generate and administer therapeutic spherical aggregates or 'spheroids' of MSCs primed under xeno-free conditions for experimental and clinical applications.
09:34
Reprogramming Primary Amniotic Fluid and Membrane Cells to Pluripotency in Xeno-free Conditions
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Cited by 3 •
2017
This protocol describes the reprogramming of primary amniotic fluid and membrane mesenchymal stem cells into induced pluripotent stem cells using a non-integrating episomal approach in fully chemically defined conditions. Procedures of extraction, culture, reprogramming, and characterization of the resulting induced pluripotent stem cells by stringent methods are detailed.
09:00
Hemogenic Endothelium Differentiation from Human Pluripotent Stem Cells in A Feeder- and Xeno-free Defined Condition
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Cited by 10 •
2019
Here, we present a protocol to precisely form hemogenic endothelium from human pluripotent stem cells in a feeder- and xeno-free condition. This method will have broad applications in disease modeling and screening for therapeutic compounds.
11:29
Defined Xeno-free and Feeder-free Culture Conditions for the Generation of Human iPSC-derived Retinal Cell Models
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Cited by 12 •
2018
The production of specialized retinal cells from pluripotent stem cells is a turning point in the development of stem cell-based therapy for retinal diseases. The present paper describes a simple method for an efficient generation of retinal organoids and retinal pigmented epithelium for basic, translational, and clinical research.
11:37
Human Pluripotent Stem Cell Culture on Polyvinyl Alcohol-Co-Itaconic Acid Hydrogels with Varying Stiffness Under Xeno-Free Conditions
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Cited by 9 •
2018
A protocol is presented to prepare polyvinyl alcohol-co-itaconic acid hydrogels with varying stiffness, which were grafted with and without oligopeptides, to investigate the effect of the stiffness of biomaterials on the differentiation and proliferation of stem cells. The stiffness of the hydrogels was controlled by the crosslinking time.
FAQs
Removing animal-derived inputs can make cell culture outcomes more consistent because it reduces sources of biological variability and contamination. This matters when the same cellular system must be maintained across experiments or prepared for clinical manufacturing. Greater control over the culture environment also helps investigators interpret changes in expansion or differentiation as biological responses rather than effects of poorly defined inputs.
Each replacement must preserve a specific function previously provided by the animal-derived material. Nutrients support cellular maintenance, attachment signals help cells remain associated with the culture surface or matrix, and growth factors influence expansion and differentiation. Designing the medium and supporting materials around these roles allows researchers to control cell behavior without relying on serum, feeder cells, enzymes, or animal-derived matrix components.
Recombinant, synthetic, and human-derived materials represent different strategies for supplying the biochemical functions cells need. The important consideration is not simply removing an animal component, but replacing its nutritional, attachment, or signaling contribution with a suitable alternative. This functional matching is central to building a standardized environment that can sustain the intended cell state and experimental objective.
Xeno-free conditions are especially valuable when uncontrolled biological inputs could complicate interpretation or downstream use. Animal-derived serum, feeder cells, enzymes, and matrix materials may each introduce variability or contamination sources; replacing them as part of a coordinated system reduces those concerns. The result is a culture platform better aligned with reproducible biology experiments and cell-based manufacturing requirements.
Establishing a xeno-free culture system begins by identifying every animal-derived component in the existing workflow, including serum, feeder cells, enzymes, and matrix materials. Researchers then select recombinant, synthetic, or human-derived substitutes that provide the required nutrients, attachment signals, or growth factors. The system is evaluated under controlled conditions for its ability to support the intended cell expansion or differentiation.
Researchers can apply Xeno-free Conditions when expanding or differentiating stem cells and other primary cells. These settings are useful when standardized culture is important for maintaining consistent biological behavior or preparing cells for downstream development. The approach is also relevant to clinical manufacturing, where compatibility with cell-based therapies makes control over culture components especially important.
The controlled environment supports several areas of biology, including developmental biology, disease modeling, tissue engineering, and cell-based therapy development. In each setting, reducing animal-derived variability can help researchers study cellular responses more consistently and create systems that are more suitable for translation. The same principles therefore connect basic investigations with applied biological and therapeutic research.