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Han B, Kamogashira T, Kikuta S, Yamasoba T. Endoplasmic reticulum stress associated with lead (Pb)-induced olfactory epithelium toxicity in an olfactory dark basal cell line. FEBS Open Bio 2023; 13:2162-2171. [PMID: 37803507 PMCID: PMC10699098 DOI: 10.1002/2211-5463.13714] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/08/2023] [Accepted: 10/02/2023] [Indexed: 10/08/2023] Open
Abstract
Lead (Pb) can damage organs and also have undesirable effects on neural development. To explore the effects of Pb on olfactory cells, we investigated Pb-induced cell toxicity in the DBC1.2 olfactory cell line, with a focus on endoplasmic reticulum (ER) stress, apoptosis, and necroptosis. Representative markers of ER stress, apoptosis, and necroptosis were analyzed by quantitative PCR. The mRNA expression levels of GRP94, GRP78, spliced XBP1, PERK, and ATF6 increased significantly after Pb exposure in a dose-dependent manner. The expression of Caspase 3 and Caspase 12 did not increase after Pb exposure, which suggested that apoptosis-induced cell death was not activated after Pb exposure. However, the mRNA of RIPK3 and MLKL showed increases in expression, which indicated that necroptosis-induced cell death was activated after Pb exposure. These results indicate that Pb exposure induced dose-dependent cytotoxicity through ER stress and necroptosis pathways in DBC1.2 cells, whereas the apoptosis pathway was not significantly stimulated. HEPES buffer showed a partial protective effect in terms of ER stress, apoptosis, and necroptosis. In summary, the necroptosis pathway plays a crucial rule in Pb exposure-induced cytotoxicity in olfactory cells.
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Affiliation(s)
- Bing Han
- Department of Otolaryngology and Head and Neck Surgery, Faculty of MedicineUniversity of TokyoTokyoJapan
| | - Teru Kamogashira
- Department of Otolaryngology and Head and Neck Surgery, Faculty of MedicineUniversity of TokyoTokyoJapan
| | - Shu Kikuta
- Department of Otolaryngology and Head and Neck Surgery, Faculty of MedicineUniversity of TokyoTokyoJapan
- Department of Otolaryngology and Head and Neck SurgeryNihon UniversityTokyoJapan
| | - Tatsuya Yamasoba
- Department of Otolaryngology and Head and Neck Surgery, Faculty of MedicineUniversity of TokyoTokyoJapan
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Klein SG, Steckbauer A, Alsolami SM, Arossa S, Parry AJ, Li M, Duarte CM. Toward Best Practices for Controlling Mammalian Cell Culture Environments. Front Cell Dev Biol 2022; 10:788808. [PMID: 35265608 PMCID: PMC8900666 DOI: 10.3389/fcell.2022.788808] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 01/26/2022] [Indexed: 12/15/2022] Open
Abstract
The characterization, control, and reporting of environmental conditions in mammalian cell cultures is fundamental to ensure physiological relevance and reproducibility in basic and preclinical biomedical research. The potential issue of environment instability in routine cell cultures in affecting biomedical experiments was identified many decades ago. Despite existing evidence showing variable environmental conditions can affect a suite of cellular responses and key experimental readouts, the underreporting of critical parameters affecting cell culture environments in published experiments remains a serious problem. Here, we outline the main sources of potential problems, improved guidelines for reporting, and deliver recommendations to facilitate improved culture-system based research. Addressing the lack of attention paid to culture environments is critical to improve the reproducibility and translation of preclinical research, but constitutes only an initial step towards enhancing the relevance of in vitro cell cultures towards in vivo physiology.
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Affiliation(s)
- Shannon G Klein
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Alexandra Steckbauer
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Samhan M Alsolami
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Silvia Arossa
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Anieka J Parry
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mo Li
- Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Carlos M Duarte
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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Tol MJ, van der Lienden MJC, Gabriel TL, Hagen JJ, Scheij S, Veenendaal T, Klumperman J, Donker-Koopman WE, Verhoeven AJ, Overkleeft H, Aerts JM, Argmann CA, van Eijk M. HEPES activates a MiT/TFE-dependent lysosomal-autophagic gene network in cultured cells: A call for caution. Autophagy 2018; 14:437-449. [PMID: 29455584 PMCID: PMC5915011 DOI: 10.1080/15548627.2017.1419118] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
In recent years, the lysosome has emerged as a highly dynamic, transcriptionally regulated organelle that is integral to nutrient-sensing and metabolic rewiring. This is coordinated by a lysosome-to-nucleus signaling nexus in which MTORC1 controls the subcellular distribution of the microphthalmia-transcription factor E (MiT/TFE) family of “master lysosomal regulators”. Yet, despite the importance of the lysosome in cellular metabolism, the impact of traditional in vitro culture media on lysosomal dynamics and/or MiT/TFE localization has not been fully appreciated. Here, we identify HEPES, a chemical buffering agent that is broadly applied in cell culture, as a potent inducer of lysosome biogenesis. Supplementation of HEPES to cell growth media is sufficient to decouple the MiT/TFE family members–TFEB, TFE3 and MITF–from regulatory mechanisms that control their cytosolic retention. Increased MiT/TFE nuclear import in turn drives the expression of a global network of lysosomal-autophagic and innate host-immune response genes, altering lysosomal dynamics, proteolytic capacity, autophagic flux, and inflammatory signaling. In addition, siRNA-mediated MiT/TFE knockdown effectively blunted HEPES-induced lysosome biogenesis and gene expression profiles. Mechanistically, we show that MiT/TFE activation in response to HEPES requires its macropinocytic ingestion and aberrant lysosomal storage/pH, but is independent of MTORC1 signaling. Altogether, our data underscore the cautionary use of chemical buffering agents in cell culture media due to their potentially confounding effects on experimental results.
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Affiliation(s)
- Marc J Tol
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands.,b Department of Pathology and Laboratory Medicine , UCLA , Los Angeles , CA , USA
| | | | - Tanit L Gabriel
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands
| | - Jacob J Hagen
- d Department of Genetics and Genomic Sciences , Icahn Institute for Genomics and Multiscale Biology , Icahn School of Medicine at Mount Sinai , New York , NY , USA
| | - Saskia Scheij
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands
| | - Tineke Veenendaal
- e Department of Cell Biology , University Medical Centre Utrecht , The Netherlands
| | - Judith Klumperman
- e Department of Cell Biology , University Medical Centre Utrecht , The Netherlands
| | - Wilma E Donker-Koopman
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands
| | - Arthur J Verhoeven
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands
| | - Hermen Overkleeft
- c Leiden Institute of Chemistry , Leiden University , The Netherlands
| | - Johannes M Aerts
- c Leiden Institute of Chemistry , Leiden University , The Netherlands
| | - Carmen A Argmann
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands.,d Department of Genetics and Genomic Sciences , Icahn Institute for Genomics and Multiscale Biology , Icahn School of Medicine at Mount Sinai , New York , NY , USA
| | - Marco van Eijk
- a Department of Medical Biochemistry , University of Amsterdam , Academic Medical Centre , The Netherlands.,c Leiden Institute of Chemistry , Leiden University , The Netherlands
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Kumar JS, Devi TSR, Ramkumaar GR, Bright A. Ab initio and density functional theory calculations of molecular structure and vibrational spectra of 4-(2-Hydroxyethyl) piperazine-1-ethanesulfonic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 152:509-522. [PMID: 26278882 DOI: 10.1016/j.saa.2015.07.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 07/21/2015] [Accepted: 07/22/2015] [Indexed: 06/04/2023]
Abstract
The FTIR and FT-Raman spectra of 4-(2-Hydroxyethyl) piperazine-1-ethanesulfonic acid were recorded and the structural and spectroscopic data of the molecule in the ground state were calculated using Hartree-Fock and Density Functional Method (B3LYP). The most stable conformer was optimized and the structural and vibrational parameters were determined. With the observed FTIR and FT-Raman data, a complete vibrational band assignment and analysis of the fundamental modes of the compound were carried out. Thermodynamic properties, Mulliken and natural atomic charge distribution were calculated using both Hartree-Fock and Density Functional Method and compared. UV-Visible and HOMO-LUMO analysis were carried out. (1)H and (13)C NMR chemical shifts of the molecule were calculated using gauge including atomic orbital method and were compared with experimental results. Stability of the molecule arising from hyperconjugative interactions and charge delocalization has been analyzed using natural bond orbital analysis. The first order hyperpolarizability (β) and molecular electrostatic potential of the molecule was computed using DFT calculations. The electron density based local reactivity descriptor such as Fukui functions were calculated to explain the chemically reactive site in the molecule.
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Affiliation(s)
- J Sharmi Kumar
- P.G. Department of Physics, Women's Christian College, College Road, Chennai 600006, TN, India; Department of Physics, Periyar University, Salem 636011, TN, India
| | - T S Renuga Devi
- Department of Physics, Women's Christian College, College Road, Chennai 600006, TN, India.
| | - G R Ramkumaar
- Department of Physics, C. Kandaswami Naidu College for Men, Anna Nagar East, Chennai 600102, TN, India
| | - A Bright
- P.G. Department of Physics, Women's Christian College, College Road, Chennai 600006, TN, India
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