Culture of IMR90 Cells in Advanced MEM with Reduced Serum

NOTE: Methods document and worksheet versions of this method are attached as PDFs.SCOPE OF APPLICATION (LIMITATIONS)This method describes the thawing, culturing, and cryopreservation of the human lung fibroblast cell line IMR90 in Advanced MEM-based growth medium. Disclaimer: The contents of this article have been reviewed by the US Environmental Protection Agency and approved for publication and do not necessarily represent Agency policy. Mention of trade names or commercial products does not constitute endorsement or recommendations for use.

Cytotoxicity of amorphous calcium phosphate multifunctional composite coatings on titanium obtained by in situ anodization/anaphoretic deposition

Cytotoxicity of amorphous calcium phosphate (ACP) and chitosan lactate (ChOL) multifunctional and hybrid composite coatings on MRC-5 human lung fibroblast cell line is elucidated. ACP/TiO2 and ACP/TiO2/ChOL are deposited onto Ti by novel in situ anodization/anaphoretic process at constant voltage. Cytotoxicity tests showed that there was no significant decrease in the survival of healthy MRC-5 cells eposed to composite samples without chitosan lactate, while there was an increase in the number of viable cells in the sample containing ChOL. The findings show that there is improved cell proliferation, differentiation and cell viability in the ChOL-containing sample, which makes ACP/TiO2/ChOL coating a good candidate for the applications in medicine and stomatology.

Antimicrobial Activity and DNA/BSA Binding Affinity of Polynuclear Silver(I) Complexes with 1,2-Bis(4-pyridyl)ethane/ethene as Bridging Ligands

1,2-Bis(4-pyridyl)ethane (bpa) and 1,2-bis(4-pyridyl)ethene (bpe) were used for the synthesis of polynuclear silver(I) complexes, {[Ag(bpa)]NO3}n (1), {[Ag(bpa)2]CF3SO3.H2O}n (2) and {[Ag(bpe)]CF3SO3}n (3). In complexes 1–3, the corresponding nitrogen-containing heterocycle acts as a bridging ligand between two Ag(I) ions. In vitro antimicrobial activity of these complexes, along with the ligands used for their synthesis, was evaluated against the broad panel of Gram-positive and Gram-negative bacteria and fungi. The silver(I) complexes 1–3 showed selectivity towards Candida spp. and Gram-negative Escherichia coli in comparison to the other investigated bacterial strains, effectively inhibiting the growth of four different Candida species with minimal inhibitory concentrations (MICs) between 2.5 and 25 μg/mL and the growth of E. coli, with MIC value being 12.5 μg/mL. Importantly, complex 2 significantly reduced C. albicans filamentation, an essential process for its pathogenesis. Antiproliferative effect on the normal human lung fibroblast cell line MRC-5 was also evaluated with the aim of determining the therapeutic potential of the complexes 1–3. The interactions of these complexes with calf thymus DNA (ctDNA) and bovine serum albumin (BSA) were studied to evaluate their binding activities towards these biomolecules for possible insights on their mode of action.

Culture of IMR90 Cells

This protocol describes the thawing, culturing, and cryopreservation of the human lung fibroblast cell line IMR90. The attached methods document is a formal version of the information included here. The attached worksheet is a fillable PDF that can be used to maintain cell passage records using this protocol. Please note: Deviation from the three-day passage cycle and cell plating density described here typically results in greater culture and experimental variability.Disclaimer: The contents of this article have been reviewed by the US Environmental Protection Agency and approved for publication and do not necessarily represent Agency policy. Mention of trade names or commercial products does not constitute endorsement or recommendations for use.