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Related Concept Videos

Stem Cell Culture01:17

Stem Cell Culture

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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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Culture and Maintenance of Human Embryonic Stem Cells
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Understanding cell culture dynamics: a tool for defining protocol parameters for improved processes and efficient

J W T Kusena1, M Shariatzadeh1, R J Thomas1

  • 1Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Epinal Way, Loughborough University, Loughborough, Leicestershire, UK.

Bioengineered
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Summary

Standardizing human embryonic stem cell (hESC) culture is vital for therapy development. This study identifies optimal seeding density and feeding protocols for reproducible, high-quality hESC cultures, ensuring consistent cell characteristics.

Keywords:
Cell therapyprocess developmentprotocol standardizationregenerative medicine

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Area of Science:

  • Stem Cell Biology
  • Biotechnology
  • Process Engineering

Background:

  • Standardization of human embryonic stem cell (hESC) culture is critical for therapeutic applications and disease modeling.
  • Current protocols often lack reproducibility, hindering translation to Good Manufacturing Practice (GMP) and clinical use.
  • Inconsistent input cell quality leads to significant end-product variation.

Purpose of the Study:

  • To investigate critical process parameters (CPPs) affecting growth, metabolism, and phenotype dynamics in hESC cultures.
  • To develop an optimized, cost-effective, and reproducible bioprocess for culturing H9 hESCs.
  • To ensure consistent cell quality and maintain critical quality attributes (CQAs) for therapeutic development.

Main Methods:

  • Investigated the impact of feeding regimes and seeding densities on specific metabolic rate (SMR) and specific growth rate (SGR).
  • Examined cell dynamics, including phenotype and proliferation markers (Oct3/4, Ki-67), under defined culture conditions.
  • Developed and validated a standardized protocol for H9 hESC culture.

Main Results:

  • Identified optimal H9 hESC seeding densities of 20,000 cells/cm².
  • Determined optimal culture durations (3-4 days) with a 48-hour 100% medium exchange.
  • Achieved high cell viability (≥95%) and expression of pluripotent/proliferation markers (>99% Oct3/4 and Ki-67 positive) with a ~SGR of 0.018 hour⁻¹.

Conclusions:

  • Process understanding and control of CPPs are essential for maintaining hESC characteristics and CQAs.
  • The defined protocol provides a standardized, reproducible method for culturing H9 hESCs.
  • Optimized parameters ensure high-quality cells suitable for therapy development and disease modeling.