ArticleCellular & molecular biology letters2012
The cytotoxic effect of diphtheria toxin on the actin cytoskeleton.
Article in Cellular & molecular biology letters, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 13 citations in OpenAlex.
- Interactions between the Re-Emerging PathogenInternational journal of molecular sciences · 2022Review
- Nicotine reduces effectiveness of doxorubicin chemotherapy and promotes CD44Experimental and therapeutic medicine · 2018Article
- Intracellular trafficking of diphtheria toxin and its mutated form, CRM197, in the endocytic pathway.Northern clinics of Istanbul · 2018Article
- Interleukin-1β effect on the endogenous ADP-ribosylation and phosphorylation of eukaryotic elongation factor 2.Cytotechnology · 2016Article
- An update in the use of antibodies to treat glioblastoma multiforme.Autoimmune diseases · 2013Review
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Diphtheria toxin (DT) and its N-terminal fragment A (FA) catalyse the transfer of the ADP-ribose moiety of nicotinamide adenine dinucleotide (NAD) into a covalent linkage with eukaryotic elongation factor 2 (eEF2). DT-induced cytotoxicity is versatile, and it includes DNA cleavage and the depolymerisation of actin filaments. The inhibition of the ADP-ribosyltransferase (ADPrT) activity of FA did not affect the deoxyribonuclease activity of FA or its interaction with actin. The toxin entry rate into cells (HUVEC) was determined by measuring the ADP-ribosyltransferase activity. DT uptake was nearly 80% after 30 min. The efficiency was determined as K(m) = 2.2 nM; V(max) = 0.25 pmol.min(-1). The nuclease activity was tested with hyperchromicity experiments, and it was concluded that G-actin has an inhibitory effect on DT nuclease activity. In the presence of DT and mutant of diphtheria toxin (CRM197), F-actin depolymerisation was determined with gel filtration, WB and fluorescence techniques. In the presence of DT and CRM197, 60-65% F-actin depolymerisation was observed. An in vitro FA-actin interaction and F-actin depolymerisation were reported in our previous paper. The present study thus confirms the depolymerisation of actin cytoskeleton in vivo.
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