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FreeStyle™ CHO-S Cells (Gibco™)

FreeStyle™ CHO-S Cells are part of the FreeStyle™ MAX Expression System, which is a breakthrough technology for rapid and high-yield mammalian protein production. This cell line is adapted to high density, serum-freesuspension culture in FreeStyle™ CHO Expression Medium and iscapable of producing high levels of recombinant protein.

293FT Cell Line (Invitrogen™)

The 293FT Cell line is ideal for generating high-titer lentivirus using the ViraPower™ Lentiviral Expression System. The 293FT Cell Line is a fast-growing, highly transfectable clonal isolate derived from human embryonal kidney cells transformed with the SV40 large T antigen. When a ViraPower™ expression vector and the ViraPower™ Lentiviral Packaging Mix are co-transfected into 293FT cells, high levels of the viral RNA and the gag⁄pol and rev proteins required for packaging are produced.

Advantages
• Fast growing
• Highly transfectable
• Produces high viral titers
• Allows very high levels of protein

Key Features
• Presence of the SV40 large T antigen allows very high levels of protein to be expressed from vectors containing the SV40 origin. Higher, in fact, than other 293 cells or the T antigen-transformed COS cells classically used.

Kit includes
• 293FT Cell Line provided as a frozen stock in 1 ml of 90% complete media and 10% DMSO

Expi293F™ Cells (Gibco™)

Expi293F™ human cells are derived from the 293 cell line, and are a core component of the Expi293™ Expression System. They are maintained in suspension culture and will grow to high density in Expi293™ Expression Medium. Expi293F™ cells are highly transfectable and generate superior protein yields compared to standard 293 cell lines in transient protein expression.

Expi293F Cells attributes include:
Suspension culture cells pre-adapted to Expi293™ Expression Medium
Demonstrated higher protein expression levels than other 293 cells adapted to Expi293™ Expression Medium
Exhibit more rapid cell growth and higher culture viabilities than standard suspension-adapted 293 cells
Consistent transient expression performance of Expi293F™ cells for over 40 passages beyond thaw
• Also available from a cGMP bank (Cat. No. 100044202)

Frozen cells are supplied in a vial containing 1 ml of cells at 1 x 107 viable cells/ml in Expi293™ Expression Medium and 10% DMSO. The cells should be thawed directly into Expi293™ Expression Medium. The six-vial multipack eliminates the need to expand and rebank the cells in the lab.

Cells are typically grown in flasks on a shaker platform in a humidified, CO2 cell culture incubator. However, cultures are scalable from volumes of <1 mL in multiwell plates to >10 L in bioreactors. Protein harvest can be performed at 2 to 7 days post-transfection, depending on the protein expressed. For expression of recombinant antibodies, harvest is typically at 5 to 7 days post-transfection. There is no need for culture medium supplementation or batch feeding during expression.

293 F Cells, in CD 293 (Gibco™)

Gibco® 293-F cells were cloned from the original 293 cell line and adapted to Gibco® CD 293 Medium. The 293 cell line is a permanent line established from primary embryonic human kidney and transformed with sheared human adenovirus type 5 DNA. The E1A adenovirus gene is expressed in these cells and participates in transactivation of some viral promoters, allowing these cells to produce very high levels of protein. Gibco® 293-F cells in Gibco® CD 293 Medium feature:
• Quick thaw into suspension culture directly in Gibco® CD 293 Medium or Gibco® 293 SFM II
• Faster growth, superior transfection efficiencies and high protein expression levels
• Documented lineage from a low passage Master Cell Bank
• Quality and performance testing

Quick thaw into suspension culture directly in Gibco® CD 293 Medium or Gibco® 293 SFM II
Each vial containing 7.5 × 106 cells can be thawed directly into suspension culture in either Gibco® CD 293 Medium or Gibco® 293 SFM II supplemented with 4 mM L-glutamine or GlutaMAX™ reagent. Protocols are provided in the product manual.

Faster growth, superior transfection efficiencies and high protein expression levels
Gibco® 293-F cells were prepared from a clone selected for fast growth in serum-free medium, superior transfection efficiencies and a high level of protein expression. Optimal transfection efficiencies are obtained with Lipofectamine™ 2000 or 293fectin™ transfection reagents.

Documented lineage from a low passage Master Cell Bank
The parental 293 cells were cloned by limiting dilution; the clone selected exhibited fast growth and high transfection efficiency. This clone was then re-cloned by limiting dilution; of these clones, the 293-F clone was then selected for its fast growth in serum free medium. The serum-free Master Cell Banks were prepared at approximately passage 25.

Quality and performance testing
Each lot of Gibco® 293-F cells is tested for cell growth and viability post-recovery from cryopreservation. In addition, the Master Seed Bank has been tested for contamination of bacteria, yeast, mycoplasma and virus and has been characterized by isozyme and karyotype analysis.

Product Use
For Research Use Only. Not for any animal or human therapeutic or diagnostic use. Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

SMD1168, Pichia pastoris Yeast Strain (Invitrogen™)

Several Pichia pastoris strains are available to allow you to optimize expression and recovery of your protein of interest. Table 1 provides information to help you choose the appropriate strain.

CHO-S Cells (cGMP banked) and Media Kit (Gibco™)

GIBCO® CHO_S Cells (cGMP Banked) and Media Kit have been developed for the growth of Chinese Hamster Ovary (CHO) cells and expression of recombinant proteins in suspension culture. Parental CHO-S cells have been produced, banked and tested to meet cGMP quality standards. The cells have been adapted to CD CHO Medium for serum free suspension growth. The CD CHO Medium is made from animal origin free and chemically defined components. It contains no proteins, hydrolysates, or components of unknown composition. The medium is formulated without L-glutamine for greater stability, and without phenol red to minimize potential for estrogen-like effects.

293 H Cells, in CD 293 (Gibco™)

Gibco® 293-H cells were cloned from the original 293 cell line and adapted to Gibco® CD 293 Medium. The 293 cell line is a permanent line established from primary embryonic human kidney and transformed with sheared human adenovirus type 5 DNA. The E1A adenovirus gene is expressed in these cells and participates in transactivation of some viral promoters, allowing these cells to produce very high levels of protein. Gibco® 293-H cells in Gibco® CD 293 Medium feature:
• Quick thaw into suspension culture directly in Gibco® CD 293 Medium or Gibco® 293 SFM II
• Faster growth, good adherence, superior transfection efficiencies and high protein expression levels
• Documented lineage from a low passage Master Cell Bank
• Quality and performance testing

Quick thaw into suspension culture directly in Gibco® CD 293 Medium or Gibco® 293 SFM II
Each vial containing 7.5 × 106 cells can be thawed directly into suspension culture in either Gibco® CD 293 Medium or Gibco® 293 SFM II supplemented with 4 mM L-glutamine or GlutaMAX™ reagent. Protocols are provided in the product manual.

Faster growth, good adherence, superior transfection efficiencies and high protein expression levels
Gibco® 293-H cells were prepared from a clone selected for fast growth in serum-free medium, good adherence during plaque assays, superior transfection efficiencies and a high level of protein expression. Optimal transfection efficiencies are obtained with Lipofectamine™ 2000 or 293fectin™ transfection reagents.

Documented lineage from a low passage Master Cell Bank
The parental 293 cells were cloned by limiting dilution; the clone selected exhibited fast growth and high transfection efficiency. This clone was then re-cloned by limiting dilution; of these clones, the 293-H clone was then selected for its good adherence during plaque assays. The serum-free Master Cell Banks were prepared at approximately passage 25.

Quality and performance testing
Each lot of Gibco® 293 H cells is tested for cell growth and viability post-recovery from cryopreservation. In addition, the Master Seed Bank has been tested for contamination of bacteria, yeast, mycoplasma and virus and has been characterized by isozyme and karyotype analysis.

Product Use
For Research Use Only. Not for any animal or human therapeutic or diagnostic use. Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

ExpiSf9™ Cells (Gibco™)

ExpiSf9 Cells are a non-engineered derivative of Sf9 insect cells that have been adapted for high-density suspension growth in ExpiSf CD Medium.

ExpiSf9 Cells:
• Enable consistent protein expression performance for over 20 passages after thaw
• Allow you to attain yields of three times more protein per liter than other insect cells from baculovirus-infected culture as part of the ExpiSf Expression System
• Achieve maximum cell densities of 2x107 cells per mL in ExpiSf CD Medium
• Exhibit fast recovery post-thaw and doubling times of approximately 24 hours
• Achieve high performance growth in multiple culture volumes from 4 mL in deep-well plates to >3 L in shake flasks

ExpiSf9 Cells are a core component of the ExpiSf Expression System. Frozen cells are supplied in a vial containing 1.5 mL of cells at 1 x 107 viable cells per mL in ExpiSf CD Medium and 7.5% DMSO. The cells should be thawed in ExpiSf CD Medium. Cells are typically grown in shake flasks on a shaker platform in a non-humidified, non-CO2 cell culture incubator. Growing ExpiSf9 cells in adherent format for routine culture is not recommended.

Sf21 cells in Sf-900™ III SFM (Gibco™)

Gibco® Sf21 cells are commonly used to isolate and propagate recombinant baculoviral stocks and to produce recombinant proteins. Gibco® Sf21 cells are adapted to serum-free suspension culture in Gibco® Sf-900™ III SFM, which saves significant time and expense associated with the adaptation of cultures. Gibco® Sf21 cells (frozen in Gibco® Sf-900™ III SFM) feature:
• Recombinant protein expression from a variety of expression systems
• Good growth in adherent or suspension culture
• Quality and performance testing

Recombinant protein expression from a variety of expression systems
High levels of protein expression in Sf21 cells can be obtained using either the BaculoDirect™ Baculovirus Expression System, the Bac-to-Bac® Baculovirus Expression System, or the InsectDirect® Expression System.

Good growth in adherent or suspension culture
Each vial containing 1 × 107 cells can be thawed directly into suspension or adherent culture. Protocols for adherent and suspension growth in Gibco® Sf-900™ III SFM are available in the product manual. Cultures can easily be transferred between the two conditions for ease of workflow but we recommend the stock cultures are maintained in suspension.

Quality and performance testing
Each lot of Gibco® Sf21 cells is tested for cell growth and viability post-recovery from cryopreservation.

Product Use
For Research Use Only. Not for any animal or human therapeutic or diagnostic use. Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

HepaRG™ Cells, Cryopreserved (Gibco™)

The HepaRG™ cell line is an immortalized hepatic cell line that retains many characteristics of primary human hepatocytes. HepaRG™ cells are terminally differentiated and provided in a convenient cryopreserved format. For scientists who need reproducible metabolism data, HepaRG™ cells are an in vitro tool that provides reproducible results in a metabolically complete and scalable system.
• Obtain biologically relevant results from a metabolically complete system
• Assess the drug-drug interaction potential of your compound
• Experience reproducible results from a single population of cells

Biologically Relevant
HepaRG™ cells exhibit many characteristics of primary human hepatocytes including morphology, expression of key metabolic enzymes, expression of nuclear receptors, and drug transporters. Unlike HepG2 and Fa2N-4 cells, HepaRG™ cells have high P450 activity and complete expression of all nuclear receptors.

Predict Metabolism-based Drug-drug Interaction
HepaRG™ cells respond to prototypical P450 inducers and inhibitors to the same extent as primary hepatocytes, allowing HepaRG™ cells to be used to evaluate potential drug-drug interactions.

Infinitely Reproducible
HepaRG™ cells exhibit many characteristics of primary human hepatocytes and are essentially a single donor. These features allow users to obtain physiological relevant results for metabolism-based drug-drug interactions without the concern of donor variability and limited lot sizes that come with relying on donor tissue. (Note: The cells we provide are terminally differentiated).

HepaRG™ is a trademark of BioPredic International.

Drosophila S2 Cells in Schneider's Medium (Gibco™)

Gibco® Drosophila S2 cells are used for heterologous protein expression in the DrosophilaM Expression System (DES®). The S2 cell line was derived from a primary culture of late stage (20-24 hours old) Drosophila melanogaster embryos. Many features of the S2 cell line suggest that it is derived from a macrophage-like lineage. S2 cells grow at room temperature in ambient CO2 as a loose, semi-adherent monolayer in tissue culture flasks and in suspension in spinners and shake flasks. Drosophila S2 cells (frozen in Gibco® Schneider's Medium) feature:
• Expression of protein transiently or through generation of stable cell lines
• Quality and performance testing

Expression of protein transiently or through generation of stable cell lines
Drosophila S2 cells can be transfected with the recombinant expression vector alone for transient expression studies or in combination with a selection vector (e.g. pCoHygro or pCoBlast) to generate stable cell lines. A variety of DES® kits are available to allow expression of the recombinant protein of interest in S2 cells.

Quality and performance testing
Each lot of Gibco® S2 cells is tested for cell growth and viability post-recovery from cryopreservation. In addition, the Master Seed Bank has been tested for contamination of bacteria, yeast, mycoplasma and virus and has been characterized by isozyme and karyotype analysis.

Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

Sf9 Cells in Grace's (Gibco™)

Gibco® Sf9 cells are commonly used to isolate and propagate recombinant baculoviral stocks and to produce recombinant proteins. The cells originated at the USDA Insect Pathology Laboratory, from the parental IPLBSF-21 (Sf21) cell line, which was derived from the pupal ovarian tissue of the fall army worm, Spodoptera frugiperda. Gibco® Sf9 cells (frozen in Grace's Insect Medium) feature:
• Recombinant protein expression from a variety of expression systems
• Good growth in adherent or suspension culture
• Small, regular size that generates even monolayers and plaques
• Quality and performance testing

Recombinant protein expression from a variety of expression systems
High levels of protein expression in Sf9 cells can be obtained using either the BaculoDirect™ Baculovirus Expression System, the Bac-to-Bac® Baculovirus Expression System, or the InsectDirect® Expression System.

Good growth in adherent or suspension culture
Protocols for adherent or suspension growth in Gibco® Supplemented Grace's Insect Medium are available in the product manual. Cultures can easily be transferred between the two conditions for ease of workflow.

Small, regular size that generates even monolayers and plaques
Gibco® Sf9 cells generate a clean, even monolayer and plaques due to their small, round, regular size. Other cells often form more irregular monolayers and plaques.

Quality and performance testing
Each lot of Gibco® Sf9 cells is tested for cell growth and viability post-recovery from cryopreservation. In addition, the Master Seed Bank has been tested for contamination of bacteria, yeast, mycoplasma and virus and has been characterized by isozyme and karyotype analysis.

Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

Sf9 cells in Sf-900™ II SFM (Gibco™)

Gibco® Sf9 cells are commonly used to isolate and propagate recombinant baculoviral stocks and to produce recombinant proteins. Gibco® Sf9 cells are adapted to serum-free suspension culture in Gibco® Sf-900™ II SFM, which saves significant time and expense associated with the adaptation of cultures. Gibco® Sf9 cells (frozen in Gibco® Sf-900™ II SFM) feature:
• Recombinant protein expression from a variety of expression systems
• Good growth in adherent or suspension culture
• Small, regular size that generates even monolayers and plaques
• Documented lineage from a low passage Master Cell Bank
• Quality and performance testing

Recombinant protein expression from a variety of expression systems
High levels of protein expression in Sf9 cells can be obtained using either the BaculoDirect™ Baculovirus Expression System, the Bac-to-Bac® Baculovirus Expression System, or the InsectDirect® Expression System.

Small, regular size that generates even monolayers and plaques
Gibco® Sf9 cells generate a clean, even monolayer and plaques due to their small, round, regular size. Other cells often form more irregular monolayers and plaques.

Documented lineage from a low passage Master Cell Bank
Gibco® Sf9 cells (in Sf-900™ II SFM) were prepared as serum-free, suspension cultures from Sf9 cells that originated at the USDA Insect Pathology Laboratory. The original Sf9 cells were cloned from the parental IPLBSF-21 (Sf21) cell line that was derived from the pupal ovarian tissue of the fall army worm, Spodoptera frugiperda. The serum-free Master Cell Banks were prepared at passage 34.

Quality and performance testing
Each lot of Gibco® Sf9 cells is tested for cell growth and viability post-recovery from cryopreservation. In addition, the Master Seed Bank has been tested for contamination of bacteria, yeast, mycoplasma and virus and has been characterized by isozyme and karyotype analysis.

Product Use
For Research Use Only. Not for any animal or human therapeutic or diagnostic use. Caution: Handle as potentially biohazardous material under at least Biosafety Level 2 containment. This product contains Dimethyl Sulfoxide (DMSO), a hazardous material. Review the Material Safety Data Sheet before handling.

293A Cell Line (Invitrogen™)

The 293A Cell Line is a subclone of the 293 Cell Line and has a relatively flat morphology. It facilitates the initial production, amplification and titering of replication-incompetent adenovirus. The cell line contains a stably integrated copy of the E1 gene that supplies the E1 proteins (E1a and E1b) required to generate recombinant adenovirus. The flat morphology of the cells makes the titering procedure easier.

Advantages
• Has flat cell morphology suitable for screening adenoviral constructs

Key Features
• Contains a stably integrated copy of the E1 gene that supplies the E1 proteins (E1a and E1b) required to generate recombinant adenovirus.

Kit includes
• 293A Cell Line provided as a frozen stock in 1 ml of 90% complete media and 10% DMSO

Flp-In™-293 Cell Line (Invitrogen™)

Flp-In™ 293 cell line is designed for rapid generation of stable cell lines that ensure high level expression of your protein of interest from a Flp-In™ expression vector. These cells contain a single stably integrated FRT site at a transcriptionally active genomic locus. Targeted integration of a Flp-In™ expression vector ensures high-level expression of your gene of interest. Flp-In™-293 cell line was created by transfecting the parent cell lines with pFRT⁄lacZeo and selecting for stable Zeocin™- resistant clones.

Flp-In™-293 cells work well with Flp-In™ vectors that express a gene from the CMV promoter (e.g., pcDNA™5⁄FRT, pcDNA5⁄FRT⁄V5-His-TOPO®, and pSecTag⁄FRT⁄V5-His-TOPO