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Related Concept Videos

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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Microbial Growth Media

Microbial growth media are essential tools in microbiology, providing the nutrients and conditions necessary to cultivate and study microorganisms. These media are categorized by their composition, consistency, and functional roles, enabling researchers to investigate microbial physiology, behavior, and interactions.Types and Consistencies of Growth MediaGrowth media can be solid, liquid, or semisolid. Solid media, often agar-based, allow visible colony growth for isolation and enumeration.
Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
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Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
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A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion
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Media composition: growth factors.

Aparna Hegde1, Barry Behr

  • 1Department of OB/GYN, Division of Reproductive Endocrinology and Infertility, Stanford University, Stanford, CA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|July 26, 2012
PubMed
Summary
This summary is machine-generated.

Growth factors are crucial for preimplantation embryo development, yet are missing in current in vitro culture media. Further research is needed to clarify their exact roles and optimal application in assisted reproductive technologies.

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Area of Science:

  • Reproductive biology
  • Developmental biology
  • Cell biology

Background:

  • Current in vitro embryo culture media aim to mimic natural environments but lack essential growth factors present in vivo.
  • Growth factors and their receptors are detected in human and nonhuman preimplantation embryos, indicating their importance.
  • Embryos express growth factors, suggesting a biological requirement for these signaling molecules.

Purpose of the Study:

  • To highlight the significance of growth factors in preimplantation embryonic development.
  • To address the gap in understanding the role and application of growth factors in in vitro embryo culture.
  • To investigate the potential benefits of supplementing culture media with growth factors.

Main Methods:

  • Review of existing literature on growth factors in embryonic development.
  • Analysis of studies on embryo coculture and the effects of growth factors.
  • Detection of growth factor receptors in preimplantation embryos.

Main Results:

  • Growth factors, despite low concentrations in vivo, profoundly influence embryonic tissue growth and differentiation.
  • Embryo expression of growth factors and receptors suggests a designed interaction with these molecules.
  • Coculture studies and animal/human trials indicate a probable benefit of adding growth factors to culture media.

Conclusions:

  • There is a strong implication that growth factors are vital for successful preimplantation embryonic development.
  • Ambiguity remains regarding the precise functions, optimal dosages, and combinatorial effects of growth factors in vitro.
  • Further investigation is warranted to elucidate the role of growth factors for improved assisted reproductive technologies.