Cell Culture Subculturing
Cell Culture Subculturing - Related Videos
05:59
Trypsinizing and Subculturing Mammalian Cells
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Cited by 7 •
2008
As cells reach confluency, they must be subcultured or passaged. This video will demonstrate a procedure for subculturing both adherent and suspension cells.
02:15
Subculturing Sulfite-Reducing Anaerobic Bacteria from an Agar Culture
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2025
Source: Anwar, Z., et al. Enrichment and Detection of Clostridium perfringens Toxinotypes in Retail Food Samples. J. Vis. Exp. (2019).In this video, sulfite-reducing bacteria are cultured in a sulfite-containing agar medium, where they grow anaerobically and reduce sulfite to hydrogen sulfide, forming black precipitates with iron ions. Black colonies are isolated from the agar depth using aseptic techniques and transferred to fresh medium for continued anaerobic incubation.
10:42
Subculture and Cryopreservation of Esophageal Adenocarcinoma Organoids: Pros and Cons for Single Cell Digestion
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Cited by 5 •
2022
This protocol describes the methods of subculture and cryopreservation of esophageal adenocarcinoma organoids with and without single cell digestion to enable researchers to choose appropriate strategies based on their experimental design.
12:02
Isolation and Culture of Endothelial Cells from the Embryonic Forebrain
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Cited by 20 •
2014
This video demonstrates an easy and reliable strategy for preparation of pure cultures of endothelial cells from the embryonic forebrain within 10-12 days and will be useful for research focused on many aspects of cerebral angiogenesis.
08:05
Culturing Human Pluripotent and Neural Stem Cells in an Enclosed Cell Culture System for Basic and Preclinical Research
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Cited by 3 •
2016
Here is a protocol to grow pluripotent stem cells (PSC) and neural stem cells (NSC) in an enclosed cell culture system that permits maximum sterility and reproducibility, replacing the traditional biosafety cabinet and incubator. This equipment meets clinical good manufacturing practice (cGMP) and clinical good lab practice (cGLP) guidelines.
FAQs
Timing the passage before excessive confluence helps balance cell expansion with preservation of culture quality. As populations become crowded, nutrients can be depleted and the local environment can change, potentially affecting cellular behavior. Subculturing at an appropriate stage therefore supports continued viability and produces populations that are more suitable for consistent downstream experiments.
The key distinction is how cells are prepared for transfer. Adherent cells must be detached from the vessel surface before dilution and reseeding, whereas suspension cells can be gently resuspended and then distributed into fresh medium. This difference determines the handling step, while both formats require controlled conditions and careful attention to population health.
Fresh growth medium restores access to nutrients as the population is divided into new vessels. This helps counter the depletion associated with continued cell multiplication and supports viable, healthy cultures over time. Diluting the transferred cells into new medium also reduces overcrowding, making the resulting culture better suited to subsequent maintenance or experiments.
A typical workflow begins by assessing whether the culture has approached confluence. The researcher then detaches adherent cells or gently resuspends suspension cells, transfers a portion into fresh growth medium, dilutes the population, and seeds it into new vessels. Throughout the process, temperature, gas, sterility, and other culture conditions must remain controlled.
In medicine, regular passage supports the expansion of primary cells and established cell lines for disease modeling, drug screening, toxicity testing, and investigation of cellular behavior. The method is especially useful when experiments require viable populations over time, because repeated maintenance provides material for planned studies while helping limit nutrient depletion and overcrowding.
If cultures are transferred under inconsistent conditions or at different stages of growth, their nutrient availability, crowding, and overall state may differ. Those differences can influence cellular behavior and make results harder to compare across experiments. A consistent approach to timing, dilution, seeding, and environmental control therefore strengthens reproducibility and helps preserve intended cell characteristics.