Assessing autophagy in the context of photodynamic therapy.

Abstract:

:Photodynamic therapy (PDT) is a procedure that has applications in the selective eradication of neoplasia where sites of malignant lesions are clearly delineated. It is a two-step process whereby cells are first sensitized to light and then photoirradiated. This results in the formation of singlet molecular oxygen and other reactive oxygen species that can cause photodamage at sites where the photosensitizing agent has localized. Photosensitizers found to be clinically useful show affinity for the endoplasmic reticulum (ER), mitochondria, lysosomes, or combinations of these sites. The induction of apoptosis and/or autophagy in photosensitized cells is a common outcome of PDT. This report explores the following issues: (1) Does the induction of autophagy in PDT protocols occur independent of, or in association with, apoptosis? (2) Does the resulting autophagy play a prosurvival or prodeath role? (3) Do photosensitizers damage/inactivate specific proteins that are components of, or that modulate the autophagic process? (4) Can an autophagic response be mounted in cells in which lysosomes are specifically photodamaged? In brief, autophagy can occur independently of apoptosis in PDT protocols, and appears to play a prosurvival role in apoptosis competent cells, and a prodeath role in apoptosis incompetent cells. Mitochondrial and ER-localized sensitizers cause selective photodamage to some (i.e., Bcl-2, Bcl-x(L), mTOR) proteins involved in the apoptotic/autophagic process. Finally, an aborted autophagic response occurs in cells with photodamaged lysosomes. Whereas autophagosomes form, digestion of their cargo is compromised because of the absence of functional lysosomes.

journal_name

Autophagy

journal_title

Autophagy

authors

Reiners JJ Jr,Agostinis P,Berg K,Oleinick NL,Kessel D

doi

10.4161/auto.6.1.10220

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

7-18

issue

1

eissn

1554-8627

issn

1554-8635

pii

10220

journal_volume

6

pub_type

杂志文章,评审
  • Members of the autophagy class III phosphatidylinositol 3-kinase complex I interact with GABARAP and GABARAPL1 via LIR motifs.

    abstract::Autophagosome formation depends on a carefully orchestrated interplay between membrane-associated protein complexes. Initiation of macroautophagy/autophagy is mediated by the ULK1 (unc-51 like autophagy activating kinase 1) protein kinase complex and the autophagy-specific class III phosphatidylinositol 3-kinase compl...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2019.1581009

    authors: Birgisdottir ÅB,Mouilleron S,Bhujabal Z,Wirth M,Sjøttem E,Evjen G,Zhang W,Lee R,O'Reilly N,Tooze SA,Lamark T,Johansen T

    更新日期:2019-08-01 00:00:00

  • Secretory autophagy holds the key to lysozyme secretion during bacterial infection of the intestine.

    abstract::In 2013, Dr. Lora Hooper and colleagues described the induction of antibacterial macroautophagy/autophagy in intestinal epithelial cells as a cytoprotective host defense mechanism against invading Salmonella enterica serovar Typhimurium (S. Typhimurium). Canonical autophagy functions in a primarily degradative capacit...

    journal_title:Autophagy

    pub_type: 杂志文章,评审

    doi:10.1080/15548627.2017.1401425

    authors: Delorme-Axford E,Klionsky DJ

    更新日期:2018-01-01 00:00:00

  • Processing of autophagic protein LC3 by the 20S proteasome.

    abstract::Ubiquitin-proteasome system and autophagy are the two major mechanisms for protein degradation in eukaryotic cells. LC3, a ubiquitin-like protein, plays an essential role in autophagy through its ability to be conjugated to phosphatidylethanolamine. In this study, we discovered a novel LC3-processing activity, and bio...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.6.1.10928

    authors: Gao Z,Gammoh N,Wong PM,Erdjument-Bromage H,Tempst P,Jiang X

    更新日期:2010-01-01 00:00:00

  • Context effect: microRNA-10b in cancer cell proliferation, spread and death.

    abstract::Single microRNA (miRNA) can regulate expression of several or multiple principal targets in a specific microenvironment. In different cellular contexts, the same miRNA may exhibit diverse functions, depending on the repertoire and stoichiometry of its direct mRNA targets. For instance, in breast cancer, microRNA-10b (...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.7.11.17371

    authors: Gabriely G,Teplyuk NM,Krichevsky AM

    更新日期:2011-11-01 00:00:00

  • Autophagy maintains cardiac function in the starved adult.

    abstract::To examine the functional significance and detailed morphological characteristics of starvation-induced autophagy in the adult heart, we starved green fluorescent protein (GFP)-microtubule-associated protein 1 light chain 3 (LC3) transgenic mice for up to 3 days. Electron microscopy revealed that, after as little as 1...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.5.7.9297

    authors: Takemura G,Kanamori H,Goto K,Maruyama R,Tsujimoto A,Fujiwara H,Seishima M,Minatoguchi S

    更新日期:2009-10-01 00:00:00

  • Unsaturation, curvature and charge: effects of membrane parameters on PIK3C3/VPS34-containing complexes.

    abstract::Phosphatidylinositol-3-phosphate (PtdIns3P) is essential for generating autophagosomes and regulating endocytic trafficking. Recently, we have shown that the activities of human PIK3C3/VPS34-containing complexes I and II, which synthesize PtdIns3P, are greatly affected by three membrane physicochemical parameters: lip...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2021.1872190

    authors: Ohashi Y,Tremel S,Williams RL

    更新日期:2021-01-15 00:00:00

  • Vacuolar digestion of entire damaged chloroplasts in Arabidopsis thaliana is accomplished by chlorophagy.

    abstract::In yeast and mammals, selective vacuolar delivery and degradation of whole mitochondria, or mitophagy, represents an important quality control system and is achieved by a cargo recognition mechanism enabling selective elimination of dysfunctional mitochondria. As photosynthetic organelles that need light for energy pr...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2017.1310360

    authors: Izumi M,Nakamura S

    更新日期:2017-07-03 00:00:00

  • Inhibition of autophagy enhances the anticancer activity of silver nanoparticles.

    abstract::Silver nanoparticles (Ag NPs) are cytotoxic to cancer cells and possess excellent potential as an antitumor agent. A variety of nanoparticles have been shown to induce autophagy, a critical cellular degradation process, and the elevated autophagy in most of these situations promotes cell death. Whether Ag NPs can indu...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.36293

    authors: Lin J,Huang Z,Wu H,Zhou W,Jin P,Wei P,Zhang Y,Zheng F,Zhang J,Xu J,Hu Y,Wang Y,Li Y,Gu N,Wen L

    更新日期:2014-01-01 00:00:00

  • Local histone acetylation by ACSS2 promotes gene transcription for lysosomal biogenesis and autophagy.

    abstract::Overcoming metabolic stress is a critical step in tumorigenesis. Acetyl coenzyme A (acetyl-CoA) converted from glucose or acetate is a substrate used for histone acetylation to regulate gene expression. However, how acetyl-CoA is produced under nutritional stress conditions is unclear. Herein we report that nutritiona...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2017.1349581

    authors: Li X,Qian X,Lu Z

    更新日期:2017-10-03 00:00:00

  • ATG7 is dispensable for LC3-PE conjugation in thioglycolate-elicited mouse peritoneal macrophages.

    abstract::Thioglycolate-elicited macrophages exhibit abundant conjugation of LC3 with PE (LC3-II). Among other autophagy-related (ATG) proteins, it is proposed that, like in yeast, both ATG5 and ATG7 are essential for LC3 conjugation. Using atg5-deficient ( -/- ) and atg7-/- macroph...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2021.1874132

    authors: Vujić N,Bradić I,Goeritzer M,Kuentzel KB,Rainer S,Kratky D,Radović B

    更新日期:2021-01-18 00:00:00

  • Autophagy-mediated regulation of macrophages and its applications for cancer.

    abstract::Autophagy is a highly conserved homeostatic pathway that plays an important role in tumor development and progression by acting on cancer cells in a cell-autonomous mechanism. However, the solid tumor is not an island, but rather an ensemble performance that includes nonmalignant stromal cells, such as macrophages. A ...

    journal_title:Autophagy

    pub_type: 杂志文章,评审

    doi:10.4161/auto.26927

    authors: Chen P,Cescon M,Bonaldo P

    更新日期:2014-02-01 00:00:00

  • Mutant HTT (huntingtin) impairs mitophagy in a cellular model of Huntington disease.

    abstract::The precise degradation of dysfunctional mitochondria by mitophagy is essential for maintaining neuronal homeostasis. HTT (huntingtin) can interact with numerous other proteins and thereby perform multiple biological functions within the cell. In this study, we investigated the role of HTT during mitophagy and analyze...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2020.1728096

    authors: Franco-Iborra S,Plaza-Zabala A,Montpeyo M,Sebastian D,Vila M,Martinez-Vicente M

    更新日期:2020-02-24 00:00:00

  • The circadian clock regulates autophagy directly through the nuclear hormone receptor Nr1d1/Rev-erbα and indirectly via Cebpb/(C/ebpβ) in zebrafish.

    abstract::Autophagy is a highly conserved intracellular degradation system, and recently was shown to display circadian rhythms in mice. The mechanisms underlying circadian regulation of autophagy, however, are still unclear. Here, we observed that numbers of autophagosomes and autolysosomes exhibit daily rhythms in the zebrafi...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2016.1183843

    authors: Huang G,Zhang F,Ye Q,Wang H

    更新日期:2016-08-02 00:00:00

  • Autophagy contributes to regulation of nuclear dynamics during vegetative growth and hyphal fusion in Fusarium oxysporum.

    abstract::In the fungal pathogen Fusarium oxysporum, vegetative hyphal fusion triggers nuclear mitotic division in the invading hypha followed by migration of a nucleus into the receptor hypha and degradation of the resident nucleus. Here we examined the role of autophagy in fusion-induced nuclear degradation. A search of the F...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/15548627.2014.994413

    authors: Corral-Ramos C,Roca MG,Di Pietro A,Roncero MI,Ruiz-Roldán C

    更新日期:2015-01-01 00:00:00

  • A role for TOR complex 2 signaling in promoting autophagy.

    abstract::The conserved target of rapamycin (TOR) kinase is a central regulator of cell growth in response to nutrient availability. TOR forms 2 structurally and functionally distinct complexes, TORC1 and TORC2, and negatively regulates autophagy via TORC1. Here we demonstrate TOR also operates independently through the TORC2 s...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.36262

    authors: Vlahakis A,Powers T

    更新日期:2014-01-01 00:00:00

  • Keap1 facilitates p62-mediated ubiquitin aggregate clearance via autophagy.

    abstract::The accumulation of ubiquitin-positive protein aggregates has been implicated in the pathogenesis of neurodegenerative diseases, heart disease and diabetes. Emerging evidence indicates that the autophagy lysosomal pathway plays a critical role in the clearance of ubiquitin aggregates, a process that is mediated by the...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.6.5.12189

    authors: Fan W,Tang Z,Chen D,Moughon D,Ding X,Chen S,Zhu M,Zhong Q

    更新日期:2010-07-01 00:00:00

  • A second report from the EMBO conference on autophagy: mechanism, regulation and selectivity of autophagy.

    abstract::Some key questions being examined in the field of autophagy concern the origin of the membrane that forms the sequestering vesicle, the function of the related machinery, including the identification of new components and binding partners of previously identified autophagy-related proteins and the mechanism of autopha...

    journal_title:Autophagy

    pub_type:

    doi:10.4161/auto.6.1.10819

    authors: Vellai T,Klionsky DJ

    更新日期:2010-01-01 00:00:00

  • Autophagy, mitochondria and cell death in lysosomal storage diseases.

    abstract::Lysosomal storage diseases (LSDs) are debilitating genetic conditions that frequently manifest as neurodegenerative disorders. They severely affect eye, motor and cognitive functions and, in most cases, abbreviate the lifespan. Postmitotic cells such as neurons and mononuclear phagocytes rich in lysosomes are most oft...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.3906

    authors: Kiselyov K,Jennigs JJ Jr,Rbaibi Y,Chu CT

    更新日期:2007-05-01 00:00:00

  • Autophagy as a mechanism of antiviral defense at the maternal-fetal interface.

    abstract::Mechanisms to protect against viral infections are crucial during pregnancy as maternal-fetal transmission can have serious pathological outcomes, including fetal infection and its sequelae, such as growth restriction, birth defects, and/or fetal death. The trophoblast forms the interface between the feto-placental un...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.26558

    authors: Delorme-Axford E,Bayer A,Sadovsky Y,Coyne CB

    更新日期:2013-12-01 00:00:00

  • Facilitated ethanol metabolism promotes cardiomyocyte contractile dysfunction through autophagy in murine hearts.

    abstract::Chronic drinking leads to myocardial contractile dysfunction where ethanol metabolism plays an essential role. Acetaldehyde, the main ethanol metabolite, mediates alcohol-induced cell injury although the underlying mechanism is still elusive. This study was designed to examine the mechanism involved in accelerated eth...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.18997

    authors: Guo R,Hu N,Kandadi MR,Ren J

    更新日期:2012-04-01 00:00:00

  • Macroautophagy-dependent, intralysosomal cleavage of a betaine homocysteine methyltransferase fusion protein requires stable multimerization.

    abstract::Cargo-based assays have proven invaluable in the study of macroautophagy in yeast and mammalian cells. Proteomic analysis of autolysosomes identified the metabolic enzyme, betaine homocysteine methyltransferase (BHMT), as a potential cargo-based, end-point marker for mammalian macroautophagy. To test whether degradati...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.5275

    authors: Mercer CA,Kaliappan A,Dennis PB

    更新日期:2008-02-01 00:00:00

  • Autophagy modulates SNCA/α-synuclein release, thereby generating a hostile microenvironment.

    abstract::SNCA/α-synuclein aggregation plays a crucial role in synucleinopathies such as Parkinson disease and dementia with Lewy bodies. Aggregating and nonaggregating SNCA species are degraded by the autophagy-lysosomal pathway (ALP). Previously, we have shown that the ALP is not only responsible for SNCA degradation but is a...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.36436

    authors: Poehler AM,Xiang W,Spitzer P,May VE,Meixner H,Rockenstein E,Chutna O,Outeiro TF,Winkler J,Masliah E,Klucken J

    更新日期:2014-01-01 00:00:00

  • The puncta enigma.

    abstract::This Editor's Corner may sound like the title of a mystery novel, but it actually reflects a question I have about the puncta articles that appear in Autophagy (or rather, the ones that do not appear). In particular, I am surprised by the number of solicitations sent out for puncta that are either ignored, or, less fr...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2017.1349043

    authors: Klionsky DJ

    更新日期:2017-09-02 00:00:00

  • Could melatonin unbalance the equilibrium between autophagy and invasive processes?

    abstract::The Syrian hamster Harderian gland (HG) is a juxtaorbital organ exhibiting marked gender-associated morphological differences. Regarding contents of porphyrins, this gland is a good model for studying physiological oxidative stress effects, since both sexes present strong (in females) and moderate (in males) levels of...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.2.2.2351

    authors: Coto-Montes A,Tomás-Zapico C

    更新日期:2006-04-01 00:00:00

  • Autophagy research: lessons from metabolism.

    abstract::Autophagy research continues to expand exponentially. Clearly autophagy and metabolism are intimately connected; however, the rapid expansion of research into this topic inevitably brings the risk that important basic knowledge of metabolism will be overlooked when considering experimental data. Unfortunately, unaware...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.5.1.7207

    authors: Meijer AJ

    更新日期:2009-01-01 00:00:00

  • Simultaneous assessment of autophagy and apoptosis using multispectral imaging cytometry.

    abstract::Multiple stress pathways result in the induction of autophagy and apoptosis. Current methods (e.g., protein gel blot, microscopy) do not offer quantitative single-cell resolution, thus making it difficult to discern if these pathways are mutually exclusive or, in some situations, cooperative in executing cell death. W...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.7.9.16252

    authors: de la Calle C,Joubert PE,Law HK,Hasan M,Albert ML

    更新日期:2011-09-01 00:00:00

  • The COP9 signalosome coerces autophagy and the ubiquitin-proteasome system to police the heart.

    abstract::We demonstrated for the first time that the COP9 signalosome (COPS) controls the degradation of a surrogate and a bona fide misfolded protein in the cytosol of cardiomyocytes likely via supporting ubiquitination by CUL/cullin-RING ligases, and that Cops8 hypomorphism exacerbates cardiac proteinopathy in mice, in which...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2015.1136773

    authors: Liu J,Su H,Wang X

    更新日期:2016-01-01 00:00:00

  • Tomato HsfA1a plays a critical role in plant drought tolerance by activating ATG genes and inducing autophagy.

    abstract::Autophagy plays critical roles in plant responses to stress. In contrast to the wealth of information concerning the core process of plant autophagosome assembly, our understanding of the regulation of autophagy is limited. In this study, we demonstrated that transcription factor HsfA1a played a critical role in tomat...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.1080/15548627.2015.1098798

    authors: Wang Y,Cai S,Yin L,Shi K,Xia X,Zhou Y,Yu J,Zhou J

    更新日期:2015-11-02 00:00:00

  • Sorting cells for basal and induced autophagic flux by quantitative ratiometric flow cytometry.

    abstract::We detail here a protocol using tandem-tagged mCherry-EGFP-LC3 (C-G-LC3) to quantify autophagic flux in single cells by ratiometric flow cytometry and to isolate subpopulations of cells based on their relative levels of autophagic flux. This robust and sensitive method measures autophagic flux rather than autophagosom...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.29394

    authors: Gump JM,Thorburn A

    更新日期:2014-07-01 00:00:00

  • Histone deacetylase 10-promoted autophagy as a druggable point of interference to improve the treatment response of advanced neuroblastomas.

    abstract::Neuroblastoma is the most common extracranial solid tumor in childhood. Despite intense multimodal therapy and many improvements through basic scientific and clinical research, the successful response of advanced-stage patients to chemotherapy remains poor. Autophagy is a cytoprotective mechanism that may help advance...

    journal_title:Autophagy

    pub_type: 杂志文章

    doi:10.4161/auto.26450

    authors: Oehme I,Lodrini M,Brady NR,Witt O

    更新日期:2013-12-01 00:00:00