Endo Medium - BioReagent

Cat. No.: E1528454

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Overview

For detection of coliforms

Specifications

Specifications & Purity

BioReagent

Storage

Room temperature

Shipped In

Normal

Grade

BioReagent

Product Line

Biological Products

Application Protocols

Item-specific, validated protocols are not provided in the Product Data. The following is general guidance for endothelial cell culture using an Endo-type medium; verify and adapt to your cells and to the item’s CoA/label.

General endothelial culture protocol (literature-based; not item-specific)

• Thawing cells: Warm medium to 37 °C. Rapidly thaw a cryovial in a 37 °C water bath. Transfer to a conical tube with pre-warmed medium, centrifuge if cryoprotectant removal is recommended, resuspend, and seed onto coated vessels (e.g., 0.1% gelatin or collagen IV).
• Seeding density: Typical range 5×10^3–2×10^4 cells/cm^2 for subculture; adjust based on growth rate and experiment.
• Incubation: 37 °C, 5% CO2 for bicarbonate-buffered media. If HEPES-buffered, brief ambient handling is acceptable; return to incubator promptly.
• Feeding: Replace 50–100% of the medium every 48–72 h or when pH indicator suggests acidification.
• Passaging: At 70–90% confluence, detach with enzyme (e.g., TrypLE/trypsin-EDTA) or enzyme-free dissociation buffer; neutralize, count, and reseed.
• Assays: For tube formation, switch to low-serum or defined conditions on ECM gel; for TEER, allow monolayer maturation with appropriate supplements.

Quality checks

• Confirm morphology (cobblestone), marker expression (e.g., CD31/VE-cadherin), mycoplasma-free status, and expected response to stimuli.

Note

• Exact supplement additions, antibiotics use, and coating requirements for SKU E1528454 are not specified; refer to CoA/Spec Sheet.

Biological Roles

General/literature context (not item-specific)

• Endothelial cell media are formulated to support the survival, proliferation, and phenotype maintenance of vascular endothelial cells. They supply essential nutrients (amino acids, glucose), inorganic ions, vitamins, and a buffering system to maintain physiological pH and osmolality.
• Specialized supplements often provide cues for endothelial function:
  • Growth factors (e.g., VEGF, bFGF/FGF2, EGF) promote proliferation and angiogenic behavior.
  • Hormonal and cofactor components (e.g., hydrocortisone, insulin, transferrin, selenium) support metabolism and receptor signaling.
  • Heparin can modulate growth factor availability and endothelial stability.
• Media composition impacts key biological readouts: nitric oxide production, tube formation propensity, expression of endothelial markers (e.g., CD31/PECAM1, VE-cadherin/CDH5, vWF), barrier integrity (TEER), and inflammatory responses to TNF-α/IL-1β.
• Buffering strategy (CO2–bicarbonate versus HEPES) and presence/absence of serum influence shear response, junctional morphology, and background in fluorescence assays.
• Primary versus immortalized cells may have different nutrient/growth factor demands; media tailored for microvascular vs. macrovascular ECs can affect phenotype fidelity.

Item-specific note

• The exact supplement profile and intended endothelial subtypes for SKU E1528454 are not specified in the Product Data. Consult the CoA/Spec Sheet for composition, recommended CO2 conditions, and any required supplements. Use is limited to research applications (Research Use Only).

Buffer Applications

Relevance

• Endo Medium functions as a complete physiological buffer system for mammalian cell culture rather than a classical analytical buffer. While not used to prepare discrete buffering solutions, its buffering components are central to maintaining pH in vitro.

General/literature guidance (not item-specific)

• Common buffering systems:
  • Sodium bicarbonate/CO2: Provides physiological pH control within a CO2 incubator (typically 5% CO2). Media must be equilibrated to CO2 to reach setpoint pH.
  • HEPES: Zwitterionic buffer that stabilizes pH during ambient handling and microscopy outside CO2; often used at 10–25 mM. Can increase background fluorescence in some assays.
• Practical use
  • Warm and pre-equilibrate medium to 37 °C and the appropriate CO2 level before sensitive assays.
  • Avoid repeated CO2-outgassing cycles (e.g., leaving flasks open at ambient air) which can drift pH alkaline for bicarbonate-buffered media.
  • If preparing medium from powder or concentrates, use high-purity water and verify final pH/osmolality by sterile sampling.
• Compatibility
  • Supplements (serum, growth factors) can slightly alter pH and buffering capacity; verify after addition.

Item-specific note

• Exact buffering composition and target pH range are not specified for this item; refer to CoA/Spec Sheet and container label for definitive instructions.

Green Alternatives

Perspective

• Cell culture media are aqueous and generally align well with green chemistry principles compared to organic solvent-based workflows. Key opportunities lie in waste minimization, energy-efficient storage/transport, and avoidance of unnecessary additives.

Greenness considerations (general; not item-specific)

• Solvent base: Water is inherently preferable under most green chemistry frameworks.
• Shipping/storage: Ambient shipping (as noted for this item) reduces cold-chain energy use. If growth factors are present, confirm stability to avoid cold-chain waste.
• Concentrates/powders: Using powdered or concentrated media to prepare in-lab can reduce packaging volume and transport emissions; requires validated sterile water and aseptic reconstitution.
• Additives: Minimize use of antibiotics/antimycotics when good aseptic technique suffices—reduces environmental load and resistance selection pressure.
• Waste: Treat spent media as biohazardous; segregate to enable appropriate treatment (e.g., autoclaving) and avoid solvent-contaminated streams.

Comparison (illustrative; literature-based)

• Aqueous endothelial media vs. organic solvent workflows:
  • Human/eco toxicity: Typically lower for aqueous media versus volatile organics.
  • Energy intensity: Lower when stored/transported at ambient vs. refrigerated/frozen chains.
  • Volatile emissions: Negligible VOCs from aqueous media.

Practical steps

• Prepare only required volumes to reduce expiry-related disposal.
• Protect from light/heat to extend usable life, minimizing waste.
• Reuse sterile containers where validated and compliant with lab SOPs.

Pharmaceutical Uses

Scope

• Research-use cell culture media like Endo Medium are employed in pharmaceutical discovery and development workflows as process reagents, not as therapeutic products or excipients.

Typical roles (general; not item-specific)

• Cell-based assays: Supporting endothelial cultures for screening angiogenesis modulators, vascular toxicity assessments, cytokine response profiling, and permeability assays.
• Bioprocess development: Optimization of co-culture conditions and microphysiological systems modeling vascular compartments.
• Analytical sample preparation: Growing cells to produce conditioned media for biomarker discovery; validating assay performance under defined conditions.
• Device qualification: Evaluating hemocompatibility and endothelialization on biomaterials in vitro.

Regulatory and quality considerations

• Research Use Only (per Product Data). Not for diagnostic, clinical, or therapeutic use.
• For GLP/GMP-adjacent research, document lot numbers and retain CoA/SDS. Where required, assess endotoxin/bioburden and composition suitability for the intended non-clinical application.

Item-specific note

• No pharmacopeial status, excipient monograph, or clinical application is specified for this item. Any use in regulated studies should be qualified internally with item-specific documentation from the CoA/Spec Sheet.

Physical Properties

Item-specific properties (from Product Data)

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Storage conditions: Room temperature (per Product Data; confirm label upon receipt).
• Shipping: Normal (ambient) shipment.
• CAS / molecular formula / MW: Not specified for this item; refer to CoA/Spec Sheet.

General/literature values for endothelial media (not item-specific)

• Physical state: Typically an aqueous solution (ready-to-use) or a sterile-filtered solution; some variants are supplied as dry powdered medium (DPM) requiring sterile reconstitution.
• pH: Commonly formulated in the physiological range, e.g., ~7.1–7.6 at 25–37 °C (literature), controlled by bicarbonate/CO2 and/or HEPES. Exact pH must be verified on the CoA.
• Osmolality: Often in the 260–340 mOsm/kg range (literature) to match mammalian cell culture norms; verify item-specific value where critical.
• Density: Approximately that of water for dilute aqueous media (literature).
• Solubility: Fully water-based; miscible with water. Supplement solutes (e.g., serum, growth factors) are also aqueous compatible.
• Light sensitivity: Some components (e.g., riboflavin, growth factors) can be light-sensitive; minimize light exposure (general guidance).
• Temperature sensitivity: Growth factors and vitamins may be temperature labile; avoid extended exposure to elevated temperatures. Follow label instructions.

Important

• Do not treat literature ranges above as specifications. For regulated/critical applications, use only the values on the CoA or product label for this specific lot.

Quality & Grades

Item-specific grade (from Product Data)

• Grade/Purity: BioReagent

What BioReagent typically signifies (general; not item-specific specifications)

• BioReagent-grade products are intended for biological research applications, emphasizing low bioburden/particulates, suitability for cell culture or biochemical assays, and consistent performance. It does not imply clinical/diagnostic use.
• For media, this often indicates: sterile or sterile-filtered manufacture, lot-to-lot consistency, and quality control tests such as pH and osmolality within defined ranges. Exact QC tests for this item are not specified; consult CoA.

Lot-specific documentation

• Composition, pH, osmolality, sterility test results, endotoxin limits, and supplier test criteria: Not specified for this item; refer to CoA/Spec Sheet.

Stabilizers and supplements

• Presence/absence of serum, antibiotics, phenol red, HEPES, growth factors, and other stabilizers: Not specified for this item; refer to CoA/Spec Sheet.

Practical guidance

• Verify whether the medium is complete (supplements included) or basal (supplements required) before use. Check label for any required additions (e.g., FBS, growth supplement kits) and for any restricted storage conditions after opening.
• Record lot numbers and retain CoA for reproducibility in cell culture experiments.

Regulatory note

• Research Use Only (per Product Data). Not for diagnostic or therapeutic use.

Reaction & Applications

Not a synthetic chemistry reagent. Endo Medium is designed for in vitro cell culture workflows rather than chemical transformations.

General/literature research applications (not item-specific)

• Primary and immortalized endothelial cell culture (e.g., HUVECs, HDMECs, microvascular ECs) for studies of angiogenesis, barrier function, nitric oxide signaling, inflammation, and vascular biology.
• Assay platforms: Tube formation assays on ECM gels, wound-healing/scratch migration, permeability/transendothelial electrical resistance (TEER) measurements, uptake of acetylated LDL, and cytokine stimulation studies.
• Co-culture systems: Endothelial–pericyte or endothelial–epithelial co-cultures; organ-on-chip microfluidic devices requiring shear-responsive endothelial monolayers.
• Omics/sample prep: RNA-seq, proteomics, metabolomics from endothelial cultures grown under defined conditions.

Practical considerations

• Select coating appropriate to cell type (e.g., gelatin, collagen I/IV, fibronectin) to promote attachment and typical morphology.
• Confirm whether the formulation is complete vs basal; add growth supplements aseptically if required.
• Adjust seeding density and medium exchange frequency based on proliferation rates and CO2/pH buffering system. Always validate against the CoA/label for this specific item.

Reaction Conditions

Not applicable to chemical reaction optimization. Endo Medium is not used to run synthetic reactions.

General/literature operational conditions for endothelial cell culture (not item-specific)

• Temperature: 37 °C typical for mammalian endothelial cells.
• CO2: 5% CO2 atmosphere for bicarbonate-buffered media; CO2-neutral handling possible for HEPES-buffered variants during short procedures.
• Humidity: High humidity (≥95%) to prevent evaporation in incubators.
• Surface: Tissue culture-treated polystyrene or coated surfaces (e.g., gelatin, collagen I/IV, fibronectin, laminin) to promote attachment and typical cobblestone morphology.
• Medium exchange: Commonly every 48–72 h or as needed based on pH indicator color and metabolic load.

Item-specific note

• The exact CO2 requirement, recommended feeding schedule, and supplement/serum content are not specified for this item; consult the CoA/Spec Sheet and container label.

Safety & Handling

Item-specific hazard information (from Product Data)

• GHS classification: Not specified for this item; refer to SDS.
• Signal word / pictograms / H-statements: Not specified for this item; refer to SDS.

General safety guidance for cell culture media (not item-specific; defer to SDS)

• Expected hazards: Most aqueous media are not acutely hazardous; however, components may include irritants (e.g., buffers, salts) and biologically active supplements. Treat as laboratory chemical mixture.
• PPE: Wear lab coat, disposable nitrile gloves, and safety glasses. Use aseptic technique in a biosafety cabinet when handling sterile media for cell culture.
• Avoid: Microbial contamination; contact with incompatible chemicals (strong oxidizers, reactive metals). Do not mix with bleach in the presence of organic amines; if decontamination is needed, follow institutional procedures.
• Handling: Keep container closed. Work under clean conditions. Discard spent media as biohazardous waste if exposed to cells or biological materials.
• First aid (general): If skin/eye contact occurs, rinse with water for several minutes; remove contaminated clothing. If inhaled as aerosol, move to fresh air. If ingested, rinse mouth with water. Seek medical attention if symptoms persist. Always follow SDS.
• Spills: Wipe with absorbent material and appropriate disinfectant; dispose per local regulations. For sterile work, disinfect work surface before/after handling.
• Stability: Some supplements (e.g., growth factors) are temperature- and light-sensitive; minimize light and avoid repeated warming/cooling cycles.

Authoritative source: For definitive hazard classification, incompatibilities, and first-aid statements, consult the product’s SDS and CoA.

Solvent Selection

Applicability

• This product is an aqueous, multi-component cell culture medium; the concept of “solvent selection” in a synthetic chemistry sense is not directly applicable. However, solvent compatibility and environmental conditions matter for sterility and cell performance.

General/literature guidance (not item-specific)

• Base matrix: Water (cell-culture grade) with dissolved salts, buffers, nutrients, and possibly proteins/growth factors.
• Miscibility: Completely miscible with water and most aqueous buffers. Not miscible with nonpolar organic solvents; avoid dilution with organics that are cytotoxic (e.g., methanol, DMSO above low percentages).
• Typical additives: Heat-inactivated FBS or serum substitutes; endothelial growth supplements; antibiotics/antimycotics (only if required). Add aseptically.
• pH control: CO2–bicarbonate buffering is common; use in a 5% CO2 incubator unless the medium is HEPES-buffered for ambient CO2 use. Confirm with CoA/label.
• Comparative considerations:
  • Bicarbonate/CO2 media: Excellent physiological buffering in CO2 incubators; pH drifts outside controlled CO2 environment.
  • HEPES-buffered media: Improved pH stability during handling at ambient air; may introduce fluorescence/background in some assays.

Practical tips

• Warm only the daily required volume to 37 °C; avoid prolonged warming to preserve labile components.
• Filter-sterilize any custom supplements (0.2 µm) before aseptic addition to maintain sterility.
• Minimize light exposure if phenol red or light-sensitive vitamins are present (general advice).

Storage & Reconstitution

Item-specific (from Product Data)

• Storage conditions: Room temperature.
• Shipped in: Normal (ambient) conditions.

Not specified for this item; refer to CoA/Spec Sheet

• Whether supplied as liquid or powder; sterility status; presence of heat- or light-sensitive components; shelf life and expiry; recommended storage after opening; any requirement for refrigeration after first use; exact pH/osmolality.

General guidance (literature-based; not item-specific)

• Liquid, ready-to-use media with growth supplements are often stored refrigerated (2–8 °C) after opening and protected from light. If only basal components are present, ambient storage may be acceptable per label. Always defer to container instructions.
• If supplied as powder: Reconstitute with sterile, cell culture-grade water to the indicated final volume; mix until fully dissolved; adjust pH/osmolality if instructed; sterile-filter (0.2 µm) if required; add supplements aseptically.
• Aliquot light- and temperature-labile supplements (e.g., growth factor cocktails) and store frozen to avoid repeated freeze–thaw. Thaw on ice and add immediately before use.
• Warm only the daily working volume to 37 °C; avoid repetitive temperature cycling of the stock container to preserve stability.

Research use

• For research use only. Confirm item-specific storage and reconstitution requirements on the CoA/Spec Sheet and product label prior to first use.

Structure & Identity

Item-specific identifiers for this catalog entry are not provided in the Product Data. The product is a specialized cell culture medium commonly referred to as “Endo Medium,” typically designed for endothelial cell culture.

Item-specific (from Product Data)

• SKU: E1528454
• Product name: Endo Medium
• Grade/Purity: BioReagent
• CAS: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular formula: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
• SMILES / InChIKey: Not applicable for complex mixtures; not specified for this item.

General/literature description (for context; not item-specific)

• Endothelial media are complex, water-based, multi-component formulations (basal salts, amino acids, vitamins, glucose, buffering system, and often growth supplements such as VEGF, EGF, hydrocortisone, heparin, insulin, transferrin, selenium, and defined serum or serum substitutes). Exact composition varies by brand/format.
• Structural features: As a mixture, there is no single molecular structure; rather, it is an aqueous solution (or powder) containing diverse small molecules, salts, and possibly proteins/growth factors.

2D structure (verbal)

• Not applicable to mixtures. The product is best described as an aqueous matrix containing dissolved inorganic ions and organic nutrients used to support endothelial cell growth in vitro.

Notes

• Where exact composition, osmolality, and pH ranges are critical, consult the item-specific CoA/Spec Sheet and SDS.

Synthetic Utility

Not applicable in the context of chemical synthesis. Endo Medium is a multi-component aqueous cell culture medium intended for biological research workflows rather than as a building block, solvent, or reagent in organic/inorganic synthesis.

Guidance

• For chemical transformations, select appropriate pure solvents and reagents instead. If your study involves chemotranscriptomic or chemical biology workflows with endothelial cells, consider this medium solely as the cellular environment, not as a reaction medium.

Cross-reference

• See Biological Roles and Application Protocols for content relevant to this product’s intended use.

Target Specificity

Not applicable. This product is a cell culture medium, not a biochemical probe, antibody, or targeting reagent. It does not possess antigen/epitope specificity.

For product-specific details on intended cell types (e.g., macrovascular vs microvascular endothelial cells) and any included growth factors, consult the CoA/Spec Sheet.

Frequently Asked Questions

How should this product be stored?

Store at room temperature.