Cultrex Reduced Growth Factor Basement Membrane Extract (RGF BME ),Type 2 is specifically qualified to support the establishment and expansion of robust organoid cultures. It's composition mimics the in vivo microenvironment to improve take rate and growth of organoids.
Key Benefits:
Qualified for use in organoid cell culture
Commonly used robust and established organoid systems
Reduced growth factor formulation provides a more defined culture system
Why Use Cultrex RGF Basement Membrane Extract, Type 2?
Cultrex Reduced Growth Factor Basement Membrane Extract (RGF BME), Type 2 is a soluble form of basement membrane purified from Engelbreth-Holm-Swarm (EHS) tumor. This extract provides a natural extracellular matrix hydrogel that polymerizes at 37°C to form a reconstituted basement membrane. Basement membranes are continuous sheets of specialized extracellular matrix that form an interface between endothelial, epithelial, muscle, or neuronal cells and their adjacent stroma and that play an essential role in tissue organization by influencing cell adhesion, migration, proliferation, and differentiation. The major components of BME include laminin, collagen IV, entactin, and heparan sulfate proteoglycans.
Cultrex RGF BME, Type 2 provides a proprietary formulation that has a high storage modulus and is designed for use in robust tissue organoid culture as well as other applications requiring an extracellular matrix scaffold.
Protocols Utilizing Cultrex RGF Basement Membrane Extract, Type 2 for Organoid Cell Culture.
≤ 8 EU/mL by Limulus Amoebocyte Lysate (LAL) assay
Sterility Testing
No bacterial or fungal growth detected following 14 days in culture
Cell Culture Testing
Organoid Culture - Cultrex RGF BME, Type 2 supports growth and expansion of mouse small intestine organoid progenitor cells.
Gelling Assay - Cultrex RGF BME, Type 2 gels in less than 30 minutes at 37 °C, and maintains the gelled form in culture medium for a minimum of 7 days at 37 °C.
Dome Assay Cultrex RGF BME, Type 2 forms and maintains stable 3-D dome structures on cell culture plates.
Viral Testing
Tested negative by PCR test for a total of 31 organisms and viruses, including: mycoplasma, 17 bacterial and virus strains typically included in mouse antibody production (MAP) testing, and 13 additional murine infectious agents including LDEV.
Scientific Data Examples
Mouse Intestinal Organoids Cultured in Cultrex RGF BME, Type 2.
Mouse intestinal organoids cultured in Cultrex RGF BME, Type 2 were immersion fixed and processed for whole mount staining or paraffin embedding and sectioning for immunocytochemistry. A) Whole mount mouse intestinal organoids were stained using Goat Anti-Human/Mouse E-Cadherin Antigen Affinity-purified Polyclonal Antibody (green; Catalog # AF748) at 10 µg/mL for 3 hours at room temperature. Cells were counterstained with DAPI (blue). B) Paraffin-embedded mouse intestinal tissue stained for Human Cadherin‑17 Antibody (green; Catalog # MAB1032), Human Ki67/MKI67 Antibody (red; Catalog # AF7617), and counterstained with DAPI (blue).
Human Lung Organoids Cultured in Cultrex RGF BME, Type 2.A) Representative brightfield image of human lung organoids cultured using Cultrex RGF BME, Type 2. B) Expression of Sox2 (green; Catalog # AF2018) and Acetylated Tubulin (red; Novus Biologicals, Catalog # NB600-567). C) Expression of p63/TP73L (green; Catalog # AF1916) and Cytokeratin 10 (red; Novus Biologicals, Catalog # NBP2-61736). D) Expression of Podoplanin (green; Catalog # AF3670) as a marker of type 1 alveolar cells.
Liver Organoid Formation and Differentiation in Cultrex RGF BME, Type 2.
Human Liver organoids were derived from human biopsy tissue. Undifferentiated organoids were formed by embedding dissociated tissue in Cultrex RGF BME, Type 2 and culturing in specialized media. The organoids were differentiated using media containing Recombinant Human FGF-19 (Catalog # 969-FG), DAPT (Catalog # 2634), and Dexamethasone (Catalog # 1126). A) Undifferentiated liver organoids. B) Liver organoids shrink as they differentiate. C) Representative images of differentiated liver organoids expression hepatocyte markers, Albumin and HNF3 beta, as well as E-Cadherin.
Human Intestinal Organoids Cultured using Cultrex RGF BME, Type 2.
Human transverse colon organoids (A,B) and human ileum organoids (C, D) were grown using cells isolated from transverse colon and ileum biopsy tissue, respectively. Organoids were embedded in Cultrex RGF BME, Type 2 as a scaffold matrix. A) Brightfield image of human transverse organoids. B) Human transverse organoid stained using Goat Anti-Human/Mouse E-Cadherin Antigen Affinity-purified Polyclonal Antibody (green; Catalog # AF748), a MUC2 Antibody (red; Catalog # NBP2-44431), and DAPI (blue). C) Brightfield image of human ileum organoids. D) Human ileum organoid stained using a Aldolase B Antibody (red; Catalog # NBP2-15345), a Human Cadherin-17 Antibody (green; Catalog # MAB1032, and DAPI (blue).
Formation of HepG2 Spheroids in Cultrex RGF BME, Type 2.
Hepatocyte spheroids were formed by plating HepG2 liver hepatocellular carcinoma cells (10,000 cells per well) in a 24-well plate coated with 5 mg/mL of Cultrex RGF BME, Type 2. Spheroids were cultured for 21 days prior imaging by brightfield microscopy.
Preparation & Storage
Stability
Product is stable for at least two years from date of manufacture when stored at ≤ -70 °C. See lot specific Certificate of Analysis for expiration date.
Shipping Conditions
The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended on the product label.
Storage
Store the unopened product at -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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