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Wyszukujesz frazę "dna oligonucleotides" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Topical treatment of LdMNPV-infected gypsy moth caterpillars with 18 nucleotides long antisense fragment from LdMNPV IAP3 gene triggers higher levels of apoptosis in infected cells and mortality of the pest
Autorzy:
Oberemok, Volodymyr V.
Laikova, Kateryna V.
Zaitsev, Alexey S.
Nyadar, Palmah M.
Gninenko, Yuri I.
Gushchin, Vladimir A.
Makarov, Valentin V.
Agranovsky, Alexey A.
Powiązania:
https://bibliotekanauki.pl/articles/961638.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
baculoviral infection
dna insecticides
dna oligonucleotides
forest and
crop protection
gypsy moth
iap genes
Opis:
The high efficiency of baculovirus infection is partially explained by the ability of the virus to suppress host defense machinery connected with the apoptosis pathway. Members of the baculovirus gene family, inhibitors of apoptosis (vIAPs), have been shown to inhibit apoptosis in baculovirus-infected cells. Here we showed that treatment of the LdMNPV- -infected 1st instar gypsy moth (Lymantria dispar) caterpillars with sense (oligoBIR) and antisense (oligoRING) DNA oligonucleotides from the LdMNPV IAP3 gene induced elevated mortality of the insects. Apoptotic DNA ladder assay showed that the leading role in this phenomenon is played by the antisense oligoRING fragment of the vIAP3 gene. These results imply that the application of both antisense DNA oligonucleotides from vIAP genes and baculovirus preparations (one following the other) may be a potential method for plant protection against insect pests.
Źródło:
Journal of Plant Protection Research; 2017, 57, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oligodeoxyadenylate stimulates the protein kinase activity of anti-DNA sIgA from human milk.
Autorzy:
Kit, Yuri
Kuligana, Elena
Semenov, Dimitry
Richter, Vladimir
Powiązania:
https://bibliotekanauki.pl/articles/1043844.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
anti-DNA antibodies
abzymes
protein kinase activity
oligonucleotides
human milk
Opis:
Preparations of anti-DNA sIgA were obtained from human milk by sequential chromatography on protein A-sepharose, DEAE-fractogel and DNA-cellulose. The influence of oligonucleotides on protein kinase activity was investigated. It was discovered that incubation of anti-DNA sIgA with oligodeoxyriboadenylate d(A)12 stimulates the phosphorylation of polypeptides of sIgA in the presence of [γ-32P]ATP. The greatest was the incorporation of 32P into the sIgA H-chains. We also demonstrated stimulation of the casein kinase activity of anti-DNA sIgA by d(A)12. The stimulation of the protein kinase activity of anti-DNA sIgA by oligoriboadenylate r(A)12 was not detected.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 291-294
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A breakthrough in the efficiency of contact DNA insecticides: rapid high mortality rates in the sap-sucking insects Dynaspidiotus britannicus Comstock and Unaspis euonymi Newstead
Autorzy:
Gal`chinsky, N.
Useinov, R.
Yatskova, E.
Laikova, K.
Novikov, I.
Gorlov, M.
Trikoz, N.
Sharmagiy, A.
Plugatar, Y.
Oberemok, V.
Powiązania:
https://bibliotekanauki.pl/articles/2082776.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antisense oligonucleotides
DNA insecticides
insect pest control
sap-sucking
insects
28S ribosomal RNA
Opis:
In this short communication describing experiments carried out on the larvae of two insects, Unaspis euonymi Comstock (feeding on Euonymus japonicus Thunb.) and Dynaspidiotus britannicus Newstead (feeding on Laurus nobilis L.), we evaluate for the first time the efficiency of using DNA insecticides in the control of sap-sucking insects, including armored scale insects. Over a period of 10 days, high insect mortality was detected in both U. euonymi and D. britannicus, accompanied by a significant decrease in the concentration of target RNAs. At the same time, no visible changes were observed when the leaves of the host plants were subjected to treatment with DNA insecticides for one month. The results show the high efficiency of DNA insecticides used against hemipteran insect pests. It is noteworthy that the high efficiency of DNA insecticides and their low cost in comparison with RNA preparations provides a safe and extremely promising potential vehicle for the control of sap-sucking insects.
Źródło:
Journal of Plant Protection Research; 2020, 60, 2; 220-223
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Insecticidal activity of three 10–12 nucleotides long antisense sequences from 5.8S ribosomal RNA gene of gypsy moth Lymantria dispar L. against its larvae
Autorzy:
Oberemok, V.V.
Laikova, K.V.
Useinov, R.Z.
Gal`chinsky, N.V.
Novikov, I.A.
Yurchenko, K.A.
Volkov, M.E.
Gorlov, M.V.
Brailko, V.A.
Plugatar
Powiązania:
https://bibliotekanauki.pl/articles/2084849.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antisense oligonucleotides
DNA insecticides
gypsy moth
insect pest control
Lymantria dispar
5.8S ribosomal RNA
Opis:
5.8S ribosomal RNA plays an important role in protein synthesis and eukaryotic ribosome translocation. Contact DNA insecticides based on antisense fragments of 5.8S ribosomal RNA gene of gypsy moth Lymantria dispar L. showed prospective insecticidal activity on its larvae. The most pronounced insecticidal effect was found for antisense fragments 10 and 11 nucleotides long (oligoRIBO-10 and oligoRIBO-11), whereas 12 nucleotides long fragment (oligoRIBO-12) caused the lowest level of insect mortality. This data corresponds to results obtained earlier using rabbit reticulocyte and wheat germ extracts, where maximum inhibition of protein synthesis was observed when a relevant oligomer 10-11 nucleotides long was used, whilst longer chain lengths resulted in reduced inhibition. Using oligoRIBO-11 fragment we have shown penetration of antisense oligonucleotides to insect cells through insects’ exoskeletons. MALDI technique registered the penetration of the oligoRIBO-11 fragment into insect cells after 30 min and a significant response of insect cells to the applied oligonucleotide after 60 min, which indicates not only that the oligonucleotide enters the insect cells, but also the synthesis of new substances in response to the applied DNA fragment. Contact DNA insecticides developed from the L. dispar 5.8S ribosomal RNA gene provide a novel biotechnology for plant protection using unmodified antisense oligonucleotides.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 561-564
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowania „click chemistry” w modyfikacjach nukleozydów i oligonukleotydów
Applications of click chemistry in modification of nucleosides and oligonucleotides
Autorzy:
Gładysz, M.
Milecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/171589.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
click chemistry
CuAAC
modyfikacje nukleozydów
oligonukleotydy
DNA
kwas deoksyrybonukleinowy
RNA
kwas rybonukleinowy
Click Chemistry
nucleosides modifications
oligonucleotides
deoxyribonucleic acid
ribonucleic acid
Opis:
Since the year 2001 new ideology of clean and simple synthesis in organic chemistry has been established. The outstanding scientists Meldal and Sharpless presented their concepts of Click Chemistry. Among the reactions chosen for this concept the reaction of Copper(I) Catalyzed Alkyne-Azide Cycloaddition (CuAAC) became the most popular one. It is the basis of syntheses employed for building blocks synthesis in medicinal chemistry and material science. Libraries of potentially pharmacologically active anticancer and antivirus compounds possessing neutral triazol linkage could be easily obtained. Remarkable efficiency of CuAAC reaction influenced on DNA- and RNAbased synthesis of novel oligonucleotides derivatives. Many of nucleic acid molecular modifications found applications in enzymatic transformation, nucleic acid hybridization, molecular tagging and gene silencing. The CuAAC reaction allows for introducing modifications into practically every region of nucleoside/nucleotide/ oligonucleotide. This includes versatile modifications of the base moiety both aiming at the base pairing ability or specific labeling of the nucleoside unit. Different conjugates (bio-, fluorescent-, affinity- or spin labels) are being attached to the base part of the nucleic acid taking advantage of the presence of azide or alkyne substituents, which can be installed without great difficulty. Labeling at the sugar part of the nucleoside can be realized at the position 2’, 3’ or 5’, the latter two giving rise to the end-labeled oligonucleotides and the 2’ position serving as the attachment point for labeling inside the oligonucleotide chain. These kind of nucleic acid modifications are very promising. Versatility of CuAAC reactions is demonstrated by numerous examples of introducing modifications into practically every reactive site of the nucleotide/oligonucleotide molecule. The review systematically presents application of the “click” technique for modification of nitrogenous base, sugar or pseudosugar moiety or phosphorus center. Possibility of creating new kind of chain linkage, devoid of negative charge and nuclease resistant is also shown. This allows to design a new class of nucleic acid analogues, similar in its DNA-mimicking properties to PNA’s.
Źródło:
Wiadomości Chemiczne; 2014, 68, 7-8; 617-643
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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