Comparison of Rat Primary Midbrain Neurons Cultured in DMEM/F12 and Neurobasal Mediums

Introduction: Midbrain dopaminergic neurons are involved in various brain functions, including motor behavior, reinforcement, motivation, learning, and cognition. Primary dopaminergic neurons and also several lines of these cells are extensively used in cell culture studies. Primary dopaminergic neurons prepared from rodents have been cultured in both DMEM/F12 and neurobasal mediums in several studies. However, there is no document reporting the comparison of these two mediums. So in this study, we evaluated the neurons and astroglial cells in primary midbrain neurons from rat embryos cultured in DMEM/F12 and neurobasal mediums.
Methods: Primary mesencephalon cells were prepared from the E14.5 rat embryo. Then they were seeded in two different mediums (Dulbecco’s Modified Eagle Medium/Nutrient Mixture F-12 [DMEM/F12] and neurobasal). On day 3 and day 5, half of the medium was replaced with a fresh medium. On day 7, β3-tubulin-, GFAP (Glial fibrillary acidic protein)- and Tyrosine Hydroxylase TH-positive cells were characterized as neurons, astrocytes, and dopaminergic neurons, respectively, using immunohistochemistry. Furthermore, the morphology of the cells in both mediums was observed under light microscopy on days 1, 3, and 5.
Results: The cells cultured in both mediums were similar under light microscopy regarding the cell number, but in a neurobasal medium, the cells have aggregated and formed clustering structures. Although GFAP-immunoreactive cells were lower in neurobasal compared to DMEM/F12, the number of β3-tubulin- and TH-positive cells in both cultures was the same.
Conclusion: This study’s findings demonstrated that primary midbrain cells from the E14.5 rat embryo could grow in both DMEM/F12 and neurobasal mediums. Therefore, considering the high price of a neurobasal medium, it can be replaced with DMEM/F12 for culturing primary dopaminergic neurons.
Keywords: B27-supplemented neurobasal; DMEM/F12 medium; Dopaminergic neurons; Rat mesencephalon cell culture.

KAv-1 is Better Suited to Chick Fibroblast Culture than DMEM or 199 Media

2021
Cultured cells are a useful resource for poultry scientists, since these cells allow scientists to evaluate biological responses to conditions such as infectious diseases in vitro while mimicking the whole-body response in birds. However avian cell culture requires an optimized basal medium, and there are currently relatively few options for this basal medium (medium 199 and KAv-1).
This means that there is still room for the development of an optimal basal medium for avian cell culture. Here we compare KAv-1 medium, Dulbecco’s modified Eagle medium (DMEM) and medium 199 during the culture of chick fibroblasts and determine that KAv-1 remains the optimal medium for these assays.
Our results show that DNA damage is reduced in fibroblasts cultured in the KAv-1 medium, when compared to both DMEM and Medium 199 and that these cells also display improved growth dynamics in KAv-1 medium when compared to both DMEM and medium 199. To the best of our knowledge, this is the first study to describe a comparative analysis of culture media for avian cells, which would provide useful information for poultry scientists.
Keywords: DNA damage; cell culture; cell growth; cellular senescence; chick fibroblasts; growth medium.

Injectable DMEM-induced phenylboronic acid-modified hyaluronic acid self-crosslinking hydrogel for potential applications in tissue repair

Most of traditional injectable hydrogels based on light curing or enzyme crosslinking are difficult to control the crosslinking time accurately and lack tissue adhesion, which leads to difficult clinical application and poor tissue repair effect.
In this study, a novel injectable DMEM (Dulbecco’s Modified Eagle’s Medium)-induced phenylboronic acid-modified hyaluronic acid self-crosslinking hydrogel was designed and prepared by combining the phenylboronic acid and a diol on hyaluronic acid as the main network, in which dynamically reversible phenylboronic acid esters imparted good self-healing properties and tissue adhesion properties to the hydrogels.
Cell medium that induced the formation of the hydrogel could simulate the pH of the physiological environment and provide uniform nutrients for the encapsulated cells. In addition, in vitro cell experiments indicated that the DMEM-induced phenylboronic acid-modified hyaluronic acid self-crosslinking hydrogel was capable of supporting cell loading and proliferation, thus being a promising candidate for tissue repair materials.

Type of culture medium determines properties of cultivated retinal endothelial cells: induction of substantial phenotypic conversion by standard DMEM

Contradictory behavior of microvascular retinal endothelial cells (REC) – a reliable in vitro model to study retinal diseases – have recently been reported which might result from cultivating the cells in standard DMEM not optimized for this cell type. Therefore, we studied DMEM’s effects on phenotype and behavior of immortalized bovine REC. Cells were cultivated in endothelial cell growth medium (ECGM) until a confluent monolayer was reached and then further kept for 1-4 days in ECGM, DMEM, or mixes thereof all supplemented with 5% fetal bovine serum, endothelial cell growth supplement, 90 μg/ml heparin, and 100 nM hydrocortisone.
Within hours of cultivation in DMEM, the cell index – measured to assess the cell layer’s barrier function – dropped to ~5% of the initial value and only slowly recovered, not only accompanied by stronger expression of HSP70 mRNA and secretion of interleukin-6, but also by lower expressions of tight junction proteins claudin-5, claudin-1 or of the marker of cell type conversion caveolin-1.
Altered subcellular localizations of EC-typic claudin-5, vascular endothelial cadherin and von Willebrand factor were also observed. Taken together, all experiments with (retinal) EC cultivated in common DMEM need to be interpreted very cautiously and should at least include phenotypic validation.
Keywords: Barrier dysfunction; Cell culture medium; Cell index measurements; Cell type conversion; DMEM; ECGM-MV; Endothelial cells; Paracellular flow; Phenotype; Retinal endothelial cells; Transcellular transport.

Assessing the protective effects of different surface coatings on NaYF 4:Yb 3+, Er 3+ upconverting nanoparticles in buffer and DMEM

We studied the dissolution behavior of β NaYF4:Yb(20%), Er(2%) UCNP of two different sizes in biologically relevant media i.e., water (neutral pH), phosphate buffered saline (PBS), and Dulbecco’s modified Eagle medium (DMEM) at different temperatures and particle concentrations. Special emphasis was dedicated to assess the influence of different surface functionalizations, particularly the potential of mesoporous and microporous silica shells of different thicknesses for UCNP stabilization and protection.
Dissolution was quantified electrochemically using a fluoride ion selective electrode (ISE) and by inductively coupled plasma optical emission spectrometry (ICP OES). In addition, dissolution was monitored fluorometrically. These experiments revealed that a thick microporous silica shell drastically decreased dissolution.

Formulated DMEM

from Addexbio
C0003-01 | RT 500 mL Bottle: 98.00 EUR

Optimized DMEM

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C0003-02 | RT 500 mL Bottle: 100.00 EUR

Specialized DMEM

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C0003-03 | RT 500 mL Bottle: 104.00 EUR

DMEM, High Glucose

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CM001-050 | 500ml: 72.00 EUR

DMEM, High Glucose

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CM001-300 | 6x500ml: 158.00 EUR

DMEM, High Glucose

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CM001-310 | 10x500ml: 201.00 EUR

DMEM, High Glucose

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CM001-320 | 20x500ml: 313.00 EUR

DMEM, High Glucose

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CM001-350 | 50x500ml: 571.00 EUR

DMEM, High Glucose

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CM002-050 | 500ml: 72.00 EUR

DMEM, High Glucose

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CM002-300 | 6x500ml: 158.00 EUR

DMEM, High Glucose

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CM002-310 | 10x500ml: 201.00 EUR

DMEM, High Glucose

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CM002-320 | 20x500ml: 313.00 EUR

DMEM, High Glucose

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CM002-350 | 50x500ml: 571.00 EUR

DMEM, High Glucose

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CM003-050 | 500ml: 74.00 EUR

DMEM, High Glucose

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CM003-300 | 6x500ml: 165.00 EUR

DMEM, High Glucose

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CM003-310 | 10x500ml: 205.00 EUR

DMEM, High Glucose

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CM003-320 | 20x500ml: 317.00 EUR

DMEM, High Glucose

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CM003-350 | 50x500ml: 585.00 EUR

DMEM, High Glucose

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CM004-050 | 500ml: 74.00 EUR

DMEM, High Glucose

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DMEM, High Glucose

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CM004-310 | 10x500ml: 205.00 EUR

DMEM, High Glucose

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CM004-320 | 20x500ml: 317.00 EUR

DMEM, High Glucose

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CM004-350 | 50x500ml: 585.00 EUR

DMEM, Low Glucose

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CM014-050 | 500ml: 77.00 EUR

DMEM, Low Glucose

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DMEM, Low Glucose

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DMEM, Low Glucose

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CM014-320 | 20x500ml: 317.00 EUR
Our results also underline the critical influence of the chemical composition of the aqueous environment on UCNP dissolution. In DMEM, we observed the formation of a layer of adsorbed molecules on the UCNP surface that protected the UCNP from dissolution and enhanced their fluorescence.Examination of this layer by X-ray photoelectron spectroscopy (XPS) and mass spectrometry (MS) suggested that mainly phenylalanine, lysine, and glucose are adsorbed from DMEM. These findings should be considered in the future for cellular toxicity studies with UCNP and other nanoparticles and the design of new biocompatible surface coatings.