Optimizing live-cell fluorescence imaging conditions to minimize phototoxicity.

Abstract:

:Fluorescence illumination can cause phototoxicity that negatively affects living samples. This study demonstrates that much of the phototoxicity and photobleaching experienced with live-cell fluorescence imaging occurs as a result of 'illumination overhead' (IO). This occurs when a sample is illuminated but fluorescence emission is not being captured by the microscope camera. Several technological advancements have been developed, including fast-switching LED lamps and transistor-transistor logic (TTL) circuits, to diminish phototoxicity caused by IO. These advancements are not standard features on most microscopes and many biologists are unaware of their necessity for live-cell imaging. IO is particularly problematic when imaging rapid processes that require short exposure times. This study presents a workflow to optimize imaging conditions for measuring both slow and dynamic processes while minimizing phototoxicity on any standard microscope. The workflow includes a guide on how to (1) determine the maximum image exposure time for a dynamic process, (2) optimize excitation light intensity and (3) assess cell health with mitochondrial markers.This article has an associated First Person interview with the first author of the paper.

journal_name

J Cell Sci

journal_title

Journal of cell science

authors

Kiepas A,Voorand E,Mubaid F,Siegel PM,Brown CM

doi

10.1242/jcs.242834

subject

Has Abstract

pub_date

2020-02-21 00:00:00

issue

4

eissn

0021-9533

issn

1477-9137

pii

jcs.242834

journal_volume

133

pub_type

杂志文章
  • Dynamics of the vacuolar H(+)-ATPase in the contractile vacuole complex and the endosomal pathway of Dictyostelium cells.

    abstract::The vacuolar H(+)-ATPase (V-ATPase) is a multi-subunit enzyme that plays important roles in eukaryotic cells. In Dictyostelium, it is found primarily in membranes of the contractile vacuole complex, where it energizes fluid accumulation by this osmoregulatory organelle and also in membranes of endolysosomes, where it ...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Clarke M,Köhler J,Arana Q,Liu T,Heuser J,Gerisch G

    更新日期:2002-07-15 00:00:00

  • The effect of various cooling rates on the membrane ultrastructure of frozen human erythrocytes and its relation to the extent of haemolysis after thawing.

    abstract::Human erythrocytes suspended in buffered isotonic saline were frozen to the temperature of liquid nitrogen at various cooling rates of 3, 140, 700, 1800, 3500, 8000 and 11 500 deg. C/min. The membrane ultrastructure in the frozen state and the extent of haemolysis after thawing were examined at each cooling rate. As t...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Fujikawa S

    更新日期:1981-06-01 00:00:00

  • Fibroblasts from cancer patients display a mixture of both foetal and adult-like phenotypic characteristics.

    abstract::We have previously reported that foetal and adult fibroblasts display distinctive migratory phenotypes when cultured on three-dimensional collagen gels. Both skin and tumour-derived fibroblasts from a significant proportion of patients with breast cancer were subsequently observed to display foetal-like migratory beha...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Schor SL,Schor AM,Rushton G

    更新日期:1988-07-01 00:00:00

  • Cell surface expression of a functional rubella virus E1 glycoprotein by addition of a GPI anchor.

    abstract::Rubella virus (RV) envelope glycoproteins E1 and E2 are targeted to the Golgi as heterodimers. While E2 contains a transmembrane Golgi retention signal, E1 is arrested in a pre-Golgi compartment in the absence of E2, and appears to require heterodimerization in order to reach the Golgi. Various forms of E1 with deleti...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Bernasconi E,Fasel N,Wittek R

    更新日期:1996-06-01 00:00:00

  • The chromosome passenger complex is required for fidelity of chromosome transmission and cytokinesis in meiosis of mouse oocytes.

    abstract::The existence of two forms of the chromosome passenger complex (CPC) in the mammalian oocyte has meant that its role in female meiosis has remained unclear. Here we use loss- and gain-of function approaches to assess the meiotic functions of one of the shared components of these complexes, INCENP, and of the variable ...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.067447

    authors: Sharif B,Na J,Lykke-Hartmann K,McLaughlin SH,Laue E,Glover DM,Zernicka-Goetz M

    更新日期:2010-12-15 00:00:00

  • The distinct interaction between cell cycle regulation and the widely conserved morphogenesis-related (MOR) pathway in the fungus Ustilago maydis determines morphology.

    abstract::The morphogenesis-related NDR kinase (MOR) pathway regulates morphogenesis in fungi. In spite of the high conservation of its components, impairing their functions results in highly divergent cellular responses depending on the fungal species. The reasons for such differences are unclear. Here we propose that the spec...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.107862

    authors: Sartorel E,Pérez-Martín J

    更新日期:2012-10-01 00:00:00

  • Overexpression of HSP70 inhibits cofilin phosphorylation and promotes lymphocyte migration in heat-stressed cells.

    abstract::Hyperthermia adversely affects cell structure and function, but also induces adaptive responses that allow cells to tolerate these stressful conditions. For example, heat-induced expression of the molecular chaperone protein HSP70 can prevent stress-induced cell death by inhibiting signaling pathways that lead to apop...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.081745

    authors: Simard JP,Reynolds DN,Kraguljac AP,Smith GS,Mosser DD

    更新日期:2011-07-15 00:00:00

  • Down-regulation of actin genes precedes microfilament network disruption and actin cleavage during p53-mediated apoptosis.

    abstract::Inactivation of Simian Virus 40 large T antigen, in cells immortalized with conditional mutants, leads to activation of p53 and apoptosis. We used the mRNA differential display method to identify genes differentially expressed during this process. We found that steady-state levels of mRNA for cytoplasmic actins decrea...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Guénal I,Risler Y,Mignotte B

    更新日期:1997-02-01 00:00:00

  • Various p53 mutant proteins differently regulate the Ras circuit to induce a cancer-related gene signature.

    abstract::Concomitant expression of mutant p53 and oncogenic Ras, leading to cellular transformation, is well documented. However, the mechanisms by which the various mutant p53 categories cooperate with Ras remain largely obscure. From this study we suggest that different mutant p53 categories cooperate with H-Ras in different...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.099663

    authors: Solomon H,Buganim Y,Kogan-Sakin I,Pomeraniec L,Assia Y,Madar S,Goldstein I,Brosh R,Kalo E,Beatus T,Goldfinger N,Rotter V

    更新日期:2012-07-01 00:00:00

  • The human Rothmund-Thomson syndrome gene product, RECQL4, localizes to distinct nuclear foci that coincide with proteins involved in the maintenance of genome stability.

    abstract::Rothmund-Thomson syndrome (RTS) is a human genetic disorder characterized by genome instability, cancer susceptibility and premature aging. The gene defective in a subset of RTS cases, RECQL4, encodes a member of the RecQ family of DNA helicases. To better define the function of the RECQL4 protein, we have determined ...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.02556

    authors: Petkovic M,Dietschy T,Freire R,Jiao R,Stagljar I

    更新日期:2005-09-15 00:00:00

  • Ccr4 contributes to tolerance of replication stress through control of CRT1 mRNA poly(A) tail length.

    abstract::In Saccharomyces cerevisiae, DNA replication stress activates the replication checkpoint, which slows S-phase progression, stabilizes slowed or stalled replication forks, and relieves inhibition of the ribonucleotide reductase (RNR) complex. To identify novel genes that promote cellular viability after replication str...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.03221

    authors: Woolstencroft RN,Beilharz TH,Cook MA,Preiss T,Durocher D,Tyers M

    更新日期:2006-12-15 00:00:00

  • Activation of protein kinase Ceta triggers cortical granule exocytosis in Xenopus oocytes.

    abstract::Previous work has shown that phorbol esters or diacylglycerol trigger cortical granule exocytosis in Xenopus oocytes. We sought to identify the isoform(s) of protein kinase C (PKC) that mediate(s) this regulated secretory event. Because this process is initiated by lipid activators of PKC but is independent of calcium...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Gundersen CB,Kohan SA,Chen Q,Iagnemma J,Umbach JA

    更新日期:2002-03-15 00:00:00

  • TRAPPII is required for cleavage furrow ingression and localization of Rab11 in dividing male meiotic cells of Drosophila.

    abstract::Although membrane addition is crucial for cytokinesis in many animal cell types, the specific mechanisms supporting cleavage furrow ingression are not yet understood. Mutations in the gene brunelleschi (bru), which encodes the Drosophila ortholog of the yeast Trs120p subunit of TRAPPII, cause failure of furrow ingress...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.054536

    authors: Robinett CC,Giansanti MG,Gatti M,Fuller MT

    更新日期:2009-12-15 00:00:00

  • The cytostome-cytopharynx complex of Trypanosoma cruzi epimastigotes disassembles during cell division.

    abstract::The cytostome-cytopharynx complex is the main site for endocytosis in epimastigotes of Trypanosoma cruzi It consists of an opening at the plasma membrane surface - the cytostome - followed by a membrane invagination - the cytopharynx. In G1/S cells, this structure is associated with two specific sets of microtubules, ...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.187419

    authors: Alcantara CL,Vidal JC,de Souza W,Cunha-E-Silva NL

    更新日期:2017-01-01 00:00:00

  • Morphology of hyaluronidase-sensitive cell coats as seen in the SEM after freeze-drying.

    abstract::Many adherent cells in vitro are surrounded by a transparent exclusion zone or halo, several micrometers thick, which red blood cells, bacteria and carbon particles cannot penetrate. This halo is rapidly and specifically removed by hyaluronidase and its high degree of hydration is demonstrated by the fact that, althou...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Bard JB,McBride WH,Ross AR

    更新日期:1983-07-01 00:00:00

  • Nuclear domains of the RNA subunit of RNase P.

    abstract::The ribonucleoprotein enzyme RNase P catalyzes the 5' processing of pre-transfer RNA, and has also recently been implicated in pre-ribosomal RNA processing. In the present investigation, in situ hybridization revealed that RNase P RNA is present throughout the nucleus of mammalian cells. However, rhodamine-labeled hum...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Jacobson MR,Cao LG,Taneja K,Singer RH,Wang YL,Pederson T

    更新日期:1997-04-01 00:00:00

  • Asymmetric localization of the adaptor protein Miranda in neuroblasts is achieved by diffusion and sequential interaction of Myosin II and VI.

    abstract::The adaptor protein Miranda plays a pivotal role in the asymmetric cell division of neuroblasts by asymmetrically segregating key differentiation factors. Miranda localization requires Myosin VI and Myosin II. The apical-then-basal localization pattern of Miranda detected in fixed tissue, and the localization defects ...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.020024

    authors: Erben V,Waldhuber M,Langer D,Fetka I,Jansen RP,Petritsch C

    更新日期:2008-05-01 00:00:00

  • A role for the Cdc14-family phosphatase Flp1p at the end of the cell cycle in controlling the rapid degradation of the mitotic inducer Cdc25p in fission yeast.

    abstract::The Schizosaccaromyces pombe protein Flp1p belongs to a conserved family of serine-threonine-phosphatases. The founding member of this family, Saccharomyces cerevisiae Cdc14p, is required for inactivation of mitotic CDKs and reversal of CDK mediated phosphorylation at the end of mitosis, thereby bringing about the M-G...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.01107

    authors: Esteban V,Blanco M,Cueille N,Simanis V,Moreno S,Bueno A

    更新日期:2004-05-15 00:00:00

  • Transcriptional activation by the human Hsp70-associating protein Hap50.

    abstract::We investigated human Hap50, the large isoform of the previously characterized Hsp70/Hsc70-associating protein Hap46, also called BAG-1, for effects on transcriptional activities. Overproduction by transient transfection led to enhanced expression of reporter gene constructs in various cell types using different promo...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Niyaz Y,Zeiner M,Gehring U

    更新日期:2001-05-01 00:00:00

  • Urokinase-induced activation of the gp130/Tyk2/Stat3 pathway mediates a pro-inflammatory effect in human mesangial cells via expression of the anaphylatoxin C5a receptor.

    abstract::Glomerular mesangial cells (MCs) are central to the pathogenesis of progressive glomeruli-associated renal diseases. However, molecular mechanisms underlying changes in MC functions still remain poorly understood. Here, we show that in MCs, the urokinase-type plasminogen activator (uPA) induces, via its specific recep...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.02409

    authors: Shushakova N,Tkachuk N,Dangers M,Tkachuk S,Park JK,Hashimoto K,Haller H,Dumler I

    更新日期:2005-06-15 00:00:00

  • Beta-arrestin signaling and regulation of transcription.

    abstract::Beta-arrestin 1 and beta-arrestin 2 are well-known negative regulators of G-protein-coupled receptor (GPCR) signaling. Upon GPCR activation, beta-arrestins translocate to the cell membrane and bind to the agonist-occupied receptors. This uncouples these receptors from G proteins and promotes their internalization, thu...

    journal_title:Journal of cell science

    pub_type: 杂志文章,评审

    doi:10.1242/jcs.03338

    authors: Ma L,Pei G

    更新日期:2007-01-15 00:00:00

  • Force-generating mechanisms of anaphase in human cells.

    abstract::What forces drive chromosome segregation remains one of the most challenging questions in cell division. Even though the duration of anaphase is short, it is of utmost importance for genome fidelity that no mistakes are made. Seminal studies in model organisms have revealed different mechanisms operating during chromo...

    journal_title:Journal of cell science

    pub_type: 杂志文章,评审

    doi:10.1242/jcs.231985

    authors: Vukušić K,Buđa R,Tolić IM

    更新日期:2019-09-16 00:00:00

  • The developing Drosophila eye - a new model to study centriole reduction.

    abstract::In the developing Drosophila eye, the centrioles of the differentiating retinal cells are not surrounded by the microtubule-nucleating γ-tubulin, suggesting that they are unable to organize functional microtubule-organizing centers. Consistent with this idea, Cnn and Spd-2, which are involved in γ-tubulin recruitment,...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.211441

    authors: Riparbelli MG,Persico V,Gottardo M,Callaini G

    更新日期:2018-02-22 00:00:00

  • Non-invasive neural stem cells become invasive in vitro by combined FGF2 and BMP4 signaling.

    abstract::Neural stem cells (NSCs) typically show efficient self-renewal and selective differentiation. Their invasion potential, however, is not well studied. In this study, Sox2-positive NSCs from the E14.5 rat cortex were found to be non-invasive and showed only limited migration in vitro. By contrast, FGF2-expanded NSCs sho...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.125757

    authors: Sailer MH,Gerber A,Tostado C,Hutter G,Cordier D,Mariani L,Ritz MF

    更新日期:2013-08-15 00:00:00

  • P-STAT1 mediates higher-order chromatin remodelling of the human MHC in response to IFNgamma.

    abstract::Transcriptional activation of the major histocompatibility complex (MHC) by IFNgamma is a key step in cell-mediated immunity. At an early stage of IFNgamma induction, chromatin carrying the entire MHC locus loops out from the chromosome 6 territory. We show here that JAK/STAT signalling triggers this higher-order chro...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.012328

    authors: Christova R,Jones T,Wu PJ,Bolzer A,Costa-Pereira AP,Watling D,Kerr IM,Sheer D

    更新日期:2007-09-15 00:00:00

  • FIB/SEM-based analysis of Borrelia intracellular processing by human macrophages.

    abstract::Borrelia burgdorferi is the causative agent of Lyme disease, a multisystemic disorder affecting primarily skin, joints and nervous system. Successful internalization and intracellular processing of borreliae by immune cells like macrophages is decisive for the outcome of a respective infection. Here, we use for the fi...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.252320

    authors: Klose M,Scheungrab M,Luckner M,Wanner G,Linder S

    更新日期:2020-12-30 00:00:00

  • Redox regulation of tyrosine phosphorylation in human spermatozoa and its role in the control of human sperm function.

    abstract::The redox status of human spermatozoa was found to have a profound influence on the fertilizing potential of these cells in association with qualitative and quantitative changes in the patterns of tyrosine phosphorylation. In general, oxidizing conditions enhanced tyrosine phosphorylation and stimulated sperm function...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:

    authors: Aitken RJ,Paterson M,Fisher H,Buckingham DW,van Duin M

    更新日期:1995-05-01 00:00:00

  • alpha3beta1-integrin regulates hair follicle but not interfollicular morphogenesis in adult epidermis.

    abstract::alpha3beta1-integrin is abundantly expressed in the epidermis, and in mice, ablation of the alpha3 gene results in embryonic defects and perinatal lethality. To determine the role of alpha3-integrin in adult skin development, we grafted skin from newborn alpha3-integrin-deficient mice on to ICRF nu/nu recipients. We r...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.00475

    authors: Conti FJ,Rudling RJ,Robson A,Hodivala-Dilke KM

    更新日期:2003-07-01 00:00:00

  • Pom1 kinase links division plane position to cell polarity by regulating Mid1p cortical distribution.

    abstract::In fission yeast, Mid1p, a major determinant for division plane position, defines a medial cortical compartment where it recruits myosin II at the onset of mitosis to initiate contractile ring assembly. How Mid1p is restricted to the medial cortex is unknown. We report here that in a pom1 polarity mutant, which displa...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.03261

    authors: Celton-Morizur S,Racine V,Sibarita JB,Paoletti A

    更新日期:2006-11-15 00:00:00

  • Plectin scaffolds recruit energy-controlling AMP-activated protein kinase (AMPK) in differentiated myofibres.

    abstract::Plectin, a cytolinker protein greater than 500 kDa in size, has an important role as a mechanical stabiliser of cells. It interlinks the various cytoskeletal filament systems and anchors intermediate filaments to peripheral junctional complexes. In addition, there is increasing evidence that plectin acts as a scaffold...

    journal_title:Journal of cell science

    pub_type: 杂志文章

    doi:10.1242/jcs.02891

    authors: Gregor M,Zeöld A,Oehler S,Marobela KA,Fuchs P,Weigel G,Hardie DG,Wiche G

    更新日期:2006-05-01 00:00:00