The role of serine 190 in FOXO nuclear export and cell death induction in Drosophila melanogaster

Hong, Yong Deog; Lee, Dong Hoon; Hwang, Soon Jae; Bang, Se Min; Jeong, Haemin; Choi, Sehoon; Phamd, Tan-Viet; Kang, Lin‐Woo; Lee, Young-Ha; Cho, Kyoung Sang; Cha, Guang-Ho

doi:10.1007/s13258-014-0182-0

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…The results indicated that the differential regulation on CYP4CE1 expression in three strains by FoxO was not through the change of FoxO level, otherwise through other changes, such as the protein modification of the transcription factor or sequence difference in CYP4CE1 promoter. The transcription factor FoxO could be modified via phosphorylation and deacetylation in insects. − Transcription factors CREB and CncC were also reported via phosphorylation to regulate the expression of detoxifying enzyme genes, such as P450s. ,,, …”

Section: Discussionmentioning

confidence: 99%

Two Point Mutations in CYP4CE1 Promoter Contributed to the Differential Regulation of CYP4CE1 Expression by FoxO between Susceptible and Nitenpyram-Resistant Nilaparvata lugens

Zhang,

Lin,

Yang

et al. 2024

J. Agric. Food Chem.

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Four P450s were reported to be important for imidacloprid resistance in Nilaparvata lugens, a major insect pest on rice, which was confirmed in this study in an imidacloprid-resistant strain (ImiR). Here we found that only two (CYP4CE1 and CYP6ER1) from these four P450 genes were overexpressed in a nitenpyram-resistant strain (NitR) when compared to a susceptible strain (SUS). CYP4CE1 RNAi reduced nitenpyram and imidacloprid resistance in NitR and ImiR strains, with a greater reduction in nitenpyram resistance. The transcription factor FoxO mediated nitenpyram resistance in NitR and ImiR strains, but it was not differentially expressed among strains. The potential reason for the differential regulation of FoxO on CYP4CE1 expression was mainly from sequence differences in the CYP4CE1 promoter between susceptible and resistant insects. In six FoxO response elements predicted in the CYP4CE1 promoter, the single-nucleotide polymorphisms were frequently detected in over 50% of NitR and ImiR individuals. The luciferase reporter assays showed that two mutations, −650T/G and −2205T/A in two response elements at the positions of −648 and −2200 bp, mainly contributed to the enhanced regulation on CYP4CE1 expression by FoxO in resistant insects. The frequency was over 69% for both −650T/G and −2205T/A detected in NitR and ImiR individuals but less than 20% in SUS insects. In conclusion, CYP4CE1 overexpression importantly contributed to nitenpyram resistance in N. lugens, and two mutations in the CYP4CE1 promoter of resistant insects led to an enhanced regulation on CYP4CE1 expression by FoxO.

show abstract

Section: Discussionmentioning

confidence: 99%

Two Point Mutations in CYP4CE1 Promoter Contributed to the Differential Regulation of CYP4CE1 Expression by FoxO between Susceptible and Nitenpyram-Resistant Nilaparvata lugens

Zhang,

Lin,

Yang

et al. 2024

J. Agric. Food Chem.

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show abstract

Two point mutations in CYP4CE1 promoter contributed to the differential regulation of CYP4CE1 expression by FoxO between susceptible and nitenpyram resistant Nilaparvata lugens

Zhang

Lin

Yang

et al. 2023

Preprint

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Four P450s were reported to be important for imidacloprid resistance in Nilaparvata lugens, a major insect pest on rice, which was confirmed in this study in an imidacloprid resistant strain (ImiR). Here we found that only two (CYP4CE1 and CYP6ER1) from these four P450 genes were over-expressed in a nitenpyram resistant strain (NitR) when compared to a susceptible strain SUS. CYP4CE1 RNAi reduced nitenpyram and imidacloprid resistance in NitR and ImiR strains, with a more reduction in nitenpyram resistance. The transcription factor FoxO mediated nitenpyram resistance in NitR and ImiR strains, but it was not differentially expressed among strains. The potential reason for the differential regulation of FoxO on CYP4CE1 expression was mainly from sequence differences in CYP4CE1promoter between susceptible and resistant insects. In six FoxO response elements predicted in CYP4CE1 promoter, the single-nucleotide polymorphisms were frequently detected in over 50% of NitR and ImiR individuals. The luciferase reporter assays showed that two mutations, -650T/G and -2205T/A in two response elements at the position of -648 bp and -2200 bp, mainly contributed to the enhanced regulation on CYP4CE1 expression by FoxO in resistant insects. The frequency was over 69% for both -650T/G and -2205T/A detected in NitR and ImiR individuals, but less than 20% in SUS insects. In conclusion,CYP4CE1 over-expression importantly contributed to nitenpyram resistance in N. lugens, and two mutations in CYP4CE1 promoter of resistant insects led to an enhanced regulation on CYP4CE1 expression by FoxO.

show abstract

The role of serine 190 in FOXO nuclear export and cell death induction in Drosophila melanogaster

Cited by 2 publications

References 27 publications

Two Point Mutations in CYP4CE1 Promoter Contributed to the Differential Regulation of CYP4CE1 Expression by FoxO between Susceptible and Nitenpyram-Resistant Nilaparvata lugens

Two Point Mutations in CYP4CE1 Promoter Contributed to the Differential Regulation of CYP4CE1 Expression by FoxO between Susceptible and Nitenpyram-Resistant Nilaparvata lugens

Two point mutations in CYP4CE1 promoter contributed to the differential regulation of CYP4CE1 expression by FoxO between susceptible and nitenpyram resistant Nilaparvata lugens

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