2008
DOI: 10.1007/s00294-008-0204-z
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Comparison between polyethylene glycol- and polyethylenimine-mediated transformation of Aspergillus nidulans

Abstract: Genetic transformation of many filamentous fungi is carried out by a protocol that utilizes polyethylene glycol (PEG) and calcium ion (Ca 2+ ). This method has remained practically unchanged for more than 20 years, but the roles these molecules play are not definitively understood. To gain a better understanding, we have compared PEG transformation to a protocol using polyethylenimine (PEI) that is the basis for non-viral transfection in mammals and which has a well established molecular model for assisti… Show more

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Cited by 18 publications
(8 citation statements)
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“…The mycelia for transformation were collected by filtration, washed with 0.6 M KCl and suspended in 0.6 M KCl buffered with 10 mM potassium phosphate pH 6.5 and containing the following lytic enzymes: 15-20 mg/ml of Glucanex ® (Novozymes), 2 mg/ml of Driselase ® (Sigma-Aldrich) and 1 mg/ml of snail acetone powder (Sigma-Aldrich). The protoplasts were prepared and transformed using the PEG method (Kuwano et al, 2008). To increase transformation efficiency, 5 μg of the HELp helper plasmid (Gems & Clutterbuck, 1993) was added.…”
Section: Methodsmentioning
confidence: 99%
“…The mycelia for transformation were collected by filtration, washed with 0.6 M KCl and suspended in 0.6 M KCl buffered with 10 mM potassium phosphate pH 6.5 and containing the following lytic enzymes: 15-20 mg/ml of Glucanex ® (Novozymes), 2 mg/ml of Driselase ® (Sigma-Aldrich) and 1 mg/ml of snail acetone powder (Sigma-Aldrich). The protoplasts were prepared and transformed using the PEG method (Kuwano et al, 2008). To increase transformation efficiency, 5 μg of the HELp helper plasmid (Gems & Clutterbuck, 1993) was added.…”
Section: Methodsmentioning
confidence: 99%
“…The PCR cycles and temperature were as follows: 94°C for 3 min; 35 cycles (94°C,45 s; 60°C,45 s; 72°C, 90 s); and a final extension at 72°C for 5 min. The products from the second round of PCR were transformed into the WT HBCg01 using polyethylene glycol/CaCl 2 , as described previously (Kuwano, Shirataki, & Itoh, ). The putative transformants were selected for resistance to hygromycin B before the DNA was extracted.…”
Section: Methodsmentioning
confidence: 99%
“…Было обнаружено, что ПЭГ вызывает адгезию протопластов, что, как считается, облегчает поступление ДНК в клетки грибов. Однако было показано, что ПЭГ вряд ли индуцирует взаимодействие между ДНК и поверхностью клетки, и слияние протопластов не является прямой причиной поглощения ДНК; следовательно, роль ПЭГ в поглощении ДНК остается в значительной степени неизвестной (Kuwano et al, 2008). После обработки ПЭГ протопласты промывают осмотическим буфером, содержащим сорбитол, и переносят в регенерационную среду для восстановления клеточной стенки перед помещением на селективную среду.…”
Section: трансформация протопластов с помощью полиэтиленгликоля (пэг)unclassified