Minimum Essential Media (MEM) in Earle’s Buffer

  • Advanced Minimum Essential Media (A-MEM) in EBSS

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    Advanced Minimum Essential Media (A-MEM) in Earle’s Buffer

    Background

    PurMaTM Advanced Minimum Essential Media (A-MEM) in Earle’s Buffer contains components to provide a 60–90% reduction in FBS supplementation. More importantly, using synthetic components such as recombinant insulin, albumin, and transferrin increases consistency. Consequently, this results in less variation amongst lot-to-lot serum changes. L-alanyl-l-glutamine is the source of glutamine in A-MEM. Additionally, reducing the requirement for FBS lowers the cost of cell culture experiments.

    Contents

    Advanced MEM in EBBS Contains:

    • includes all twenty essential and non-essential amino acids with higher concentrations than regular and MAX formulations.
    • A-MEM incorporates elements that significantly reduce the need for a serum for cell culture.

    Crucial Ingredients:

    • PurMaTM Human Transferrin (Holo): prevents improper iron storage and delivery in cell culture systems which is a major contributor to oxidative stress and protein damage.
    • PurMaTM Insulin Recombinant
    • Trace of other elements which mimic the elements in fetal bovine serum.
    Consequently, Advanced Minimum Essential Media (A-MEM) in Earle’s Buffer is a significant step toward a chemically defined form of this media. Unquestionably, Chemically Defined Advanced MEM (CD-A-MEM) is the outcome of decades of innovative cutting-edge research and will soon be offered globally to laboratories that are looking for consistency and repeatability in their data.

    Formulation

    Complete formulation is available here: Advanced MEM Formulation in Earle's Buffer 

    References

    1. Culture of granulosa cells in collagen gels: the influence of cell shape on steroidogenesis. Carnegie JA, Byard R, Dardick I, Tsang BK. Biol Reprod. 1988 May;38(4):881-90. doi: 10.1095/biolreprod38.4.881. PMID: 3401543
    2. Myelin formation in rat dorsal root ganglion cultured in a serum-free medium. Ninomiya T, Takahashi K. J Anat. 1987 Jun;152:209-13. PMID: 3654371
    3. Long-term organ culture of hamster cheek pouch mucosa. Mock D, Main JH. J Oral Pathol. 1976 Jul;5(4):237-40. doi: 10.1111/j.1600-0714.1976.tb01770.x. PMID: 820846
    [/fusion_text][fusion_table fusion_table_type="2" fusion_table_rows="13" fusion_table_columns="2" margin_top="30px" margin_right="" margin_bottom="" margin_left="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_color="" hue="" saturation="" lightness="" alpha="" animation_speed="0.3" animation_delay="0" animation_offset=""]
    Parameter Specification
    Appearance Red, clear liquid
    pH 7.2 ± 0.1
    Osmolality 275-360 mOsm/L
    Endotoxin NMT< 2EU/mL
    Mycoplasma Negative
    Suitability  Suitable for mammalian cell culture
    Additive Sodium pyruvate
    Indicator Phenol red
    Mycoplasma Detection Negative
    Sterility Tested Sterile filtered using 0.22 µm filter
    Form Liquid
    Shipping Condition  Room temperature
    [/fusion_table][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]1 x 500 ml, 6 x 500 ml, 1 x 1000 ml, 6 x 1000 ml, 1 x 10 L, 1 x 50 L, 10 X 1EZ Individually Packed, 50 X 1EZ Individually Packed Read more
  • Minimum Essential Media (MEM) in Earle’s Buffer

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    Minimum Essential Media (MEM) in Earle’s Buffer

    Background

    Minimum Essential Media (MEM) in Earle’s Buffer is a modification of Basal Medium Eagle (BME) which was originally developed by Harry Eagle. It also includes higher concentrations of amino acids for cultured mammalian cells. Moreover, MEM is available with Earle’s salts for use in a CO2 incubator, or with Hanks' salts for use without CO2.

    PurMa™ MEM media includes Earle's Buffer

    As the composition of Earle's buffer, it contains:
    • Calcium chloride
    • Magnesium sulfate
    • Potassium chloride
    • Sodium bicarbonate
    • Sodium chloride
    • Sodium Phosphate, monobasic

    PurMa Biologics manufactures 118 types of MEM, it also includes:

    • Low level of glucose (1.00 g/ liter)
    • Sodium bicarbonate (2.2 g/L)
    • 2 mM L-glutamine (292 mg/L)’

    Why PurMa Biologics? Why we stand behind our cell culture media:

    Our products are the outcome of 30 years of experience in cutting edge science. We routinely manufacture over 1500 media. We have the most comprehensive collection of cell and tissue culture media. Moreover, We utilize %99 pure amino acids. This will significantly increase the consistency among your experiments, and the result of your lab. Considering the highest quality, our prices certainly are extremely reasonable.

    Application:

    MEM has been used for cell lines such as HeLa, BHK-21, 293, HEP-2, HT-1080, MCF-7, and fibroblasts as well as primary rat astrocytes. Additionally, MEM in Earle's buffer uses a sodium bicarbonate buffer system (2.2 g/L) that requires a 5–10% CO2 environment to maintain physiological pH.

    Formulation

    For detailed formulation visit "the formulation Tab" as well as by clicking here: MEM Formulation in Earl's Buffer

    References

    1. Culture of granulosa cells in collagen gels: the influence of cell shape on steroidogenesis. Carnegie et al. Biol Reprod. 1988 May;38(4):881-90. doi: 10.1095/biolreprod38.4.881. PMID: 3401543
    2. Myelin formation in rat dorsal root ganglion cultured in a serum-free medium. Ninomiya et al. J Anat. 1987 Jun;152:209-13. PMID: 365437
    [/fusion_text][fusion_table fusion_table_type="2" fusion_table_rows="13" fusion_table_columns="2" margin_top="30px" margin_right="" margin_bottom="" margin_left="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_color="" hue="" saturation="" lightness="" alpha="" animation_speed="0.3" animation_delay="0" animation_offset=""]
    Parameter Specification
    Appearance Red, clear liquid
    pH 7.2 ± 0.1
    Osmolality 275-360 mOsm/L
    Endotoxin NMT< 2EU/mL
    Mycoplasma Negative
    Suitability  Suitable for mammalian cell culture
    Additive N/A
    Indicator Phenol red
    Mycoplasma Detection Negative
    Sterility Tested Sterile filtered using 0.22 µm filter
    Form Liquid
    Shipping Condition  Room temperature
    [/fusion_table][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]1 x 500 ml, 6 x 500 ml, 1 x 1000 ml, 6 x 1000 ml, 1 x 10 L, 1 x 50 L, 10 X 1EZ Individually Packed, 50 X 1EZ Individually Packed Read more
  • Minimum Essential Media MAX (MEM-MAX) in Earle’s Buffer

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    Minimum Essential Media MAX (MEM-MAX) in Earle’s Buffer

    Background

    Minimum Essential Media MAX (MEM-MAX) in Earle’s Buffer is a commonly used media for Mammalian cell culture.

    Advantages

    The advantages of MEM-MAX over MEM are:

    • Higher PH Capacity
    • Moreover, it contains 4 mM L-Alanyl-L-Glutamine (0.869 g/L) instead of L-Glutamine and therefore:
    • Possess longer shelf life.
    • More importantly, minimizes toxic ammonia build-up.
    • Significantly improves cell viability and growth.
    • Remains stable across a wide range of temperatures.
    • Improves the culture of primary cells.

    Mechanism

    Although L-glutamine is a vital amino acid, it degrades, generating toxic ammonia and pyrrolidine carboxylic acid. One way to minimize L-glutamine degradation in media is to gradually add these amino acids to your cell culture. However, keeping track of time to keep the amount of L-glutamine at the same level is tedious, if not impossible. Alternatively, L-alanyl-L-glutamine can be used because it is much more stable in aqueous solutions. More importantly, it does not easily degrade and gradually releases aminopeptidases. As a result, L-glutamine and L-alanine are then used by the cells for protein production in the TCA cycle. In addition to our Max formulation products, we manufacture PurMaTM GluaSup (Cat# P3S210 559) is a combination of L-alanyl-L-glutamine that prevents the degradation of L-glutamine.

    Contents

    Minimum Essential Media MAX (MEM-MAX) in Earle’s Buffer contains:

    • 5 mM sodium pyruvate
    • High glucose (4.5g/L)
    • Non-Essential Amino Acids
    • 3.7 g/L Sodium Bicarbonate; PurMa Biologics Manufactures several types of MEM-MAX based on the amount of Sodium Bicarbonate and HEPES (PH capacity)
    • Phenol Red
    MEM-MAX in EBBS contains no proteins, lipids, or growth factors. Therefore, it requires supplementation, commonly with 10% Fetal bovine Serum (FBS).

    Formulation

    For complete formulation Click here: MEM-MAX Formulation in Earl's Buffer

    References

    1. Culture of granulosa cells in collagen gels: the influence of cell shape on steroidogenesis. Carnegie JA, et al. Biol Reprod. 1988 May;38(4):881-90. doi: 10.1095/biolreprod38.4.881. PMID: 3401543
    2. Myelin formation in rat dorsal root ganglion cultured in a serum-free medium. Ninomiya T, Takahashi K. J Anat. 1987 Jun;152:209-13. PMID: 3654371
    3. Long-term organ culture of hamster cheek pouch mucosa. Mock D, Main JH. J Oral Pathol. 1976 Jul;5(4):237-40. doi: 10.1111/j.1600-0714.1976.tb01770.x. PMID: 820846
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    Parameter Specification
    Appearance Red, clear liquid
    pH 7.2 ± 0.1
    Osmolality 275-360 mOsm/L
    Endotoxin NMT< 2EU/mL
    Mycoplasma Negative
    Suitability  Suitable for mammalian cell culture
    Additive N/A
    Indicator Phenol red
    Mycoplasma Detection Negative
    Sterility Tested Sterile filtered using 0.22 µm filter
    Form Liquid
    Shipping Condition  Room temperature
    [/fusion_table][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]1 x 500 ml, 6 x 500 ml, 1 x 1000 ml, 6 x 1000 ml, 1 x 10 L, 1 x 50 L, 10 X 1EZ Individually Packed, 50 X 1EZ Individually Packed Read more

Minimum Essential Media (MEM) in Earle’s Buffer

Background

Minimum Essential Media (MEM) in Earle’s Buffer is a modification of Basal Medium Eagle (BME) which was originally developed by Harry Eagle. It also includes higher concentrations of amino acids for cultured mammalian cells. Moreover, MEM is available with Earle’s salts for use in a CO2 incubator, or with Hanks’ salts for use without CO2.

PurMa™ MEM media includes Earle’s Buffer

As the composition of Earle’s buffer, it contains:

  • Calcium chloride
  • Magnesium sulfate
  • Potassium chloride
  • Sodium bicarbonate
  • Sodium chloride
  • Sodium Phosphate, monobasic

PurMa Biologics manufactures 118 types of MEM, it also includes:

  • Low level of glucose (1.00 g/ liter)
  • Sodium bicarbonate (2.2 g/L)
  • 2 mM L-glutamine (292 mg/L)

MEM has been used for cell lines such as HeLa, BHK-21, 293, HEP-2, HT-1080, MCF-7, and fibroblasts as well as primary rat astrocytes. Additionally, MEM in Earle’s buffer uses a sodium bicarbonate buffer system (2.2 g/L) that requires a 5–10% CO2 environment to maintain physiological pH.

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