Insect cell lines are finding utility in many areas of biology, but their application as an in vitro tool for ecotoxicity testing has been given less attention. Our study aimed to demonstrate the utility and sensitivity of Sf21 cells to commonly used fungicides: Propiconazole and CuSO, as well as dimethyl sulphoxide (DMSO) an industrial solvent. Sf21 cells were readily cultured from frozen stocks in 3-4 days and showed utility as an invertebrate in vitro acute toxicity test. The data showed the threshold levels of cell survivability against propiconazole and CuSO. The EC values were 135.1 μM and 3.31 mM respectively. The LOAEL (lowest observed adverse effect level) was ≈ 1 μM for propiconazole and ≈ 10 μM for CuSO. Culturing of Sf21 cells in media containing the solvent DMSO showed that 0.5% DMSO concentration did not effect cell viability. Sf21 cells are sensitive and useful as a robust ecologically relevant screening tool for acute toxicity testing.
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http://dx.doi.org/10.1007/s10646-024-02781-9 | DOI Listing |
Vaccine
January 2025
Vaxine Pty Ltd, Warradale, Adelaide, SA 5046, Australia; Australian Respiratory and Sleep Medicine Institute Ltd, Adelaide, SA 5042, Australia. Electronic address:
Int J Biol Macromol
January 2025
School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China. Electronic address:
The diversity of host plants is an important reason for the global spread of Hyphantria cunea. However, no studies have explored the role of the antioxidant defense system with catalase (CAT) as the core at the molecular level in the adaptation of the H. cunea to host plant secondary metabolites.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Medical Engineering and Biotechnology, Ernst-Abbe-Hochschule, University of Applied Sciences, Carl-Zeiss-Promenade 2, 07745, Jena, Germany.
Cultivating insect cells in glass vessels can be challenging. Due to uncontrolled cell adhesion and associated cell loss as well as clumping, the replication of experiments is put at risk. A cost-effective solution to improve and stabilize cultivation may be to silanize glass vessels, making them more hydrophobic and chemically inert.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
School of Forestry, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, PR China. Electronic address:
Pb is a prevalent heavy metal contaminant in the habitats of herbivorous insects. This study investigated the tolerance level of Lymantria dispar larvae to Pb and its corresponding mechanism focusing on the role of ZIP genes. The detrimental impacts of Pb on larval growth and survival exhibited a dose-dependent relationship, with a survival rate of 48 % even at the extreme concentration of 3424 mg/kg.
View Article and Find Full Text PDFPest Manag Sci
December 2024
Postdoctoral Mobile Station of Biology, Genetic Engineering Research Center, College of Life Sciences, Chongqing University, Chongqing, China.
Background: Discovering insecticidal proteins with high activity and strict insect specificity and applying them to the biological control of insect pests is of great significance. Oral LqhIT2 has insecticidal activity, which most other insecticidal neurotoxin proteins do not have, but the large-scale preparation of the toxin is difficult and one of the obstacles to determining its anti-insect potential for biological control.
Results: In this study, the expression level of recombinant LqhIT2 (rLqhIT2) in Pichia pastoris was as high as 1.
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