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Thursday, August 13, 2020 | History

2 edition of In the matter of certain limited-charge cell culture microcarriers found in the catalog.

In the matter of certain limited-charge cell culture microcarriers

United States International Trade Commission

In the matter of certain limited-charge cell culture microcarriers

investigation no. 337-TA-129

by United States International Trade Commission

  • 128 Want to read
  • 1 Currently reading

Published by U.S. International Trade Commission in Washington, D.C .
Written in English

    Subjects:
  • Cell culture,
  • Culture media (Biology)

  • Edition Notes

    Other titlesCertain limited-charge cell culture microcarriers
    SeriesUSITC publication -- 1486
    The Physical Object
    Pagination47, [19] p. :
    Number of Pages47
    ID Numbers
    Open LibraryOL16805847M

    Stem cells (SCs), the undifferentiated biological cells, have the infinite capacity to self-renew and the pluripotent ability to differentiate. SCs and their derived products offer great promise for biomedical applications such as cell therapy, tissue engineering, regenerative medicine and drug screening. However, the clinical applications of SCs require a large amount of SCs with high quality. Roder, B.; Zuhlke, A.; Widdecke, H. and Klein J. () Synthesis and application of new microcarriers for animal cell culture. Part II: Application of polystyrene microcarriers. Journal of Biomaterials Science, Polymer Edition 5 (1–2): 79–

    Microcarrier cell culture principles and methods containing culture conditions culture cycle culture medium culture procedure culture surface culture systems culture vessel culture volume Cytodex microcarriers density depends described Develop effect embryo established example fibroblasts final glucose greater About Google Books. A few reports exist also on the use of microcarriers for lepidopteran cell lines. Three-millimeter glass beads gave the best performance for Trichoplusia ni (T. ni) cells immobilized in a split-flow, airlift bioreactor (11). The use of collagen-coated microcarriers with T. ni cells in suspension culture gave good growth and levels of the.

    Most of our blood cells fall in the range of – μm, however, bacteria are small, –20 μm, so they can easily infect a culture and multiply within a host cell, thus making microbes the most commonly encountered cell culture contaminants [34, 35]. A microcarrier culture will be used for cell therapy applications. This process uses non-porous microcarriers in a L bioreactor. After the cells are expanded on the microcarriers, they use release from the microcarriers using trypsin. The following properties are provided for the microcarriers: Diameter= um Particle Density= g/L.


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In the matter of certain limited-charge cell culture microcarriers by United States International Trade Commission Download PDF EPUB FB2

Sale in the United States of certain limited-charge cell culture microcarriers. For those issues addressed in the ALJ's initial determination that the CommiSBion chose not to review, the initial determination has become the decision of the Commission.

Order Accordingly, it. Get this from a library. In the matter of certain limited-charge cell culture microcarriers: investigation no. TA [United States International Trade Commission.].

In the matter of certain limited-charge cell culture microcarriers: investigation no. TAAuthor: United States International Trade Commission. A groundbreaking development for the culture of anchorage-dependent animal cells occurred inwhen van Wezel reported the culture of human fibroblast-like cells using solid microparticles—microcarriers—which were suspended in the culture medium by slow stirring.

These microcarriers were beads of the ion exchange gel diethylaminoethyl Cited by: 3. Abstract Microcarrier culture provides an easily scalable approach to culture of anchorage-dependent mammalian cells, providing a much higher surface area. Today, most cells will grow to a density of (human fibroblasts), (many epithelial cell lines) or (chick fibroblasts, CHO cells) × 10 6 cells/ml in stirred batch culture using commercially available microcarriers (Superbeads™, Flow Laboratories, Inc., McLean, VA) and standard serum-supplemented cell culture media.

Methods and protocols for the identification and isolation of SCs, have already been widely described and only a few milligrams of muscle are now required to isolate a sufficient amount of cells to start a culture (15, 16).Once SCs are isolated, they need to be expanded in-vitro to achieve large cell numbers.

SCs are adherent cells, meaning that they need a surface, mimicking an extracellular. Microcarrier culture introduces new possibilities and, for the first time, allows practical high-yield culture of anchorage-dependent cells (1). Cell Culture Principles and Methods Microcarrier Cell Culture Principles and Methods imagination at work Multimodal Chromatography Multimodal Chromatography Handbook GE Healthcare Life Sciences Nucleic Acid Sample Preparation for Downstream Analyses Principles and Methods Nucleic Acid Sample Preparation for Downstream Analyses.

The concept of three-dimensional (3D) cell culture has been proposed to maintain cellular morphology and function as in vivo. Among different approaches for 3D cell culture, microcarrier technology provides a promising tool for cell adhesion, proliferation, and cellular interactions in 3D space mimicking the in vivo microenvironment.

In particular, microcarriers based on biopolymers have been. A microcarrier is a support matrix allowing for the growth of adherent cells in bioreactors. Inmicrocarrier development began when van Wezel found that microcarriers could support the growth of anchorage-dependent cells.

Microcarriers are typically - micrometre spheres and their density allows them to be maintained in suspension with gentle stirring. importance in the design of microcarriers. All vertebrate cells possess a negative surface-chargeat physiological pI-I (Borysenko and Woods, ).

But as cells can be cultured on both positive (DEAE-ionexchanger) and negatively charged (e plastic) surfaces, it appears thatit is not the polarityofthe charges that is ofimportance.

Microcarrier culture introduces new possibilities and, for the first time, allows practical high-yield culture of anchorage-dependent cells (1).

In microcarrier culture, cells grow as monolayers on. 35 U.S.C. § (a) or [1ST PARAGRAPH] "The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by.

Both Cytodex 3 and Cultispher S microcarriers proved most suitable from a selection of microcarriers as growth substrates for this NM57 cell line. Maximum cell densities of × cells ml-1and × cells ml-1 respectively were obtained using Cytodex 3 (3 g l-1) and and Cultispher S (1 g l-1) in 5 l bioreactor cultures.

Purchase Cell Culture - 1st Edition. Print Book & E-Book. ISBNCell culture flasks are not feasible for industrial scale production when thousand fold increases in production volume are needed. Microcarriers offer a convenient method for growing adherent cells in bioreactors.

Microcarriers serve as a scaffold that adherent cells can attach to, allowing them to proliferate while a bioreactor. The fact that experimentation may be complex does not necessarily make it undue, if the art typically engages in such experimentation.

In re Certain Limited-Charge Cell Culture Microcarriers, USPQ(Int’l Trade Comm'n ), aff’d. sub nom., Massachusetts Institute of Technology v.

A.B. Fortia, F.2dUSPQ (Fed. Cir. Improved cell culture microcarriers, and methods for their production and use, are disclosed herein. These improved microcarriers have positive charge capacities adjusted and/or controlled within a range suitable for good cell growth.

One method for producing such improved microcarriers is by treating beads formed from polymers containing pendant hydroxy groups, such as dextran beads, with an. MICROCARRIERS cells cultured on microcarriers and implanted into ani- The microcarrier culture system was introduced by mal models can cure several disorders for many years.

van Wezel in and has been applied successfully to Table 1 summarizes a number of examples of microcar. Because of their high surface area:volume ratio, microcarriers are commonly used to scale culture of anchorage‐dependent cells, including human hepatocytes, 30 human retinal pigment epithelial cells 31 and co‐cultures of neurons and astrocytes.

32 Glass and Cytodex 3 microcarriers have been used for mESC suspension culture and resulted in.1. This appeal is from the final decision of the United States International Trade Commission (Commission or ITC) in Certain Limited-Charge Cell Culture Microcarriers, Investigation No.

TA, an investigation under section of the Tariff Act ofas amended, 19 U.S.C. Sec. (section ), determining that there was no violation of section by the importation of certain.The claims in the C-I-P application pertained to the use of limited-charge ( to meq/gram, measured on the MIT basis) cell culture microcarriers to grow anchorage-dependent cells and to produce cell-growth by-products.

The C-I-P application issued as U.S. .