PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65.

Tiejun Zhang, Kyeong Ah Park, Yuwen Li, Hee Sun Byun, Juhee Jeon, Yoonjung Lee, Jang Hee Hong, Jin Man Kim, Song Mei Huang, Seung Won Choi, Seon Hwan Kim, Kyung Cheol Sohn, Hyunju Ro, Ji Hoon Lee, Tao Lu, George R. Stark, Han Ming Shen, Zheng Gang Liu, Jongsun Park, Gang Min Hur

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Constitutive NF-κB activation in cancer cells is caused by defects in the signalling network responsible for terminating the NF-κB response. Here we report that plant homeodomain finger protein 20 (PHF20) maintains NF-κB in an active state in the nucleus by inhibiting the interaction between PP2A and p65. We show that PHF20 induces canonical NF-κB signalling by increasing the DNA-binding activity of NF-κB subunit p65. In PHF20 overexpressing cells, the termination of tumour necrosis factor-induced p65 phosphorylation is impaired whereas upstream signalling events triggered by tumour necrosis factor are unaffected. This effect strictly depends on the interaction between PHF20 and methylated lysine residues of p65, which hinders recruitment of PP2A to p65, thereby maintaining p65 in a phosphorylated state. We further show that PHF20 levels correlate with p65 phosphorylation levels in human glioma specimens. Our work identifies PHF20 as a novel regulator of NF-κB activation and suggests that elevated expression of PHF20 may drive constitutive NF-κB activation in some cancers.

Original languageEnglish (US)
Article number2062
JournalNature Communications
Volume4
StatePublished - 2013

Fingerprint

Homeodomain Proteins
disrupting
Plant Proteins
proteins
Proteins
phosphorylation
Phosphorylation
necrosis
Chemical activation
activation
tumors
Tumor Necrosis Factor-alpha
cancer
lysine
regulators
stopping
Glioma
upstream
Lysine
Neoplasms

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)
  • Medicine(all)

Cite this

Zhang, T., Park, K. A., Li, Y., Byun, H. S., Jeon, J., Lee, Y., ... Hur, G. M. (2013). PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65. Nature Communications, 4, [2062].

PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65. / Zhang, Tiejun; Park, Kyeong Ah; Li, Yuwen; Byun, Hee Sun; Jeon, Juhee; Lee, Yoonjung; Hong, Jang Hee; Kim, Jin Man; Huang, Song Mei; Choi, Seung Won; Kim, Seon Hwan; Sohn, Kyung Cheol; Ro, Hyunju; Lee, Ji Hoon; Lu, Tao; Stark, George R.; Shen, Han Ming; Liu, Zheng Gang; Park, Jongsun; Hur, Gang Min.

In: Nature Communications, Vol. 4, 2062, 2013.

Research output: Contribution to journalArticle

Zhang, T, Park, KA, Li, Y, Byun, HS, Jeon, J, Lee, Y, Hong, JH, Kim, JM, Huang, SM, Choi, SW, Kim, SH, Sohn, KC, Ro, H, Lee, JH, Lu, T, Stark, GR, Shen, HM, Liu, ZG, Park, J & Hur, GM 2013, 'PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65.', Nature Communications, vol. 4, 2062.
Zhang T, Park KA, Li Y, Byun HS, Jeon J, Lee Y et al. PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65. Nature Communications. 2013;4. 2062.
Zhang, Tiejun ; Park, Kyeong Ah ; Li, Yuwen ; Byun, Hee Sun ; Jeon, Juhee ; Lee, Yoonjung ; Hong, Jang Hee ; Kim, Jin Man ; Huang, Song Mei ; Choi, Seung Won ; Kim, Seon Hwan ; Sohn, Kyung Cheol ; Ro, Hyunju ; Lee, Ji Hoon ; Lu, Tao ; Stark, George R. ; Shen, Han Ming ; Liu, Zheng Gang ; Park, Jongsun ; Hur, Gang Min. / PHF20 regulates NF-κB signalling by disrupting recruitment of PP2A to p65. In: Nature Communications. 2013 ; Vol. 4.
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abstract = "Constitutive NF-κB activation in cancer cells is caused by defects in the signalling network responsible for terminating the NF-κB response. Here we report that plant homeodomain finger protein 20 (PHF20) maintains NF-κB in an active state in the nucleus by inhibiting the interaction between PP2A and p65. We show that PHF20 induces canonical NF-κB signalling by increasing the DNA-binding activity of NF-κB subunit p65. In PHF20 overexpressing cells, the termination of tumour necrosis factor-induced p65 phosphorylation is impaired whereas upstream signalling events triggered by tumour necrosis factor are unaffected. This effect strictly depends on the interaction between PHF20 and methylated lysine residues of p65, which hinders recruitment of PP2A to p65, thereby maintaining p65 in a phosphorylated state. We further show that PHF20 levels correlate with p65 phosphorylation levels in human glioma specimens. Our work identifies PHF20 as a novel regulator of NF-κB activation and suggests that elevated expression of PHF20 may drive constitutive NF-κB activation in some cancers.",
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AU - Jeon, Juhee

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AU - Hong, Jang Hee

AU - Kim, Jin Man

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AU - Lee, Ji Hoon

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AU - Stark, George R.

AU - Shen, Han Ming

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AU - Park, Jongsun

AU - Hur, Gang Min

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N2 - Constitutive NF-κB activation in cancer cells is caused by defects in the signalling network responsible for terminating the NF-κB response. Here we report that plant homeodomain finger protein 20 (PHF20) maintains NF-κB in an active state in the nucleus by inhibiting the interaction between PP2A and p65. We show that PHF20 induces canonical NF-κB signalling by increasing the DNA-binding activity of NF-κB subunit p65. In PHF20 overexpressing cells, the termination of tumour necrosis factor-induced p65 phosphorylation is impaired whereas upstream signalling events triggered by tumour necrosis factor are unaffected. This effect strictly depends on the interaction between PHF20 and methylated lysine residues of p65, which hinders recruitment of PP2A to p65, thereby maintaining p65 in a phosphorylated state. We further show that PHF20 levels correlate with p65 phosphorylation levels in human glioma specimens. Our work identifies PHF20 as a novel regulator of NF-κB activation and suggests that elevated expression of PHF20 may drive constitutive NF-κB activation in some cancers.

AB - Constitutive NF-κB activation in cancer cells is caused by defects in the signalling network responsible for terminating the NF-κB response. Here we report that plant homeodomain finger protein 20 (PHF20) maintains NF-κB in an active state in the nucleus by inhibiting the interaction between PP2A and p65. We show that PHF20 induces canonical NF-κB signalling by increasing the DNA-binding activity of NF-κB subunit p65. In PHF20 overexpressing cells, the termination of tumour necrosis factor-induced p65 phosphorylation is impaired whereas upstream signalling events triggered by tumour necrosis factor are unaffected. This effect strictly depends on the interaction between PHF20 and methylated lysine residues of p65, which hinders recruitment of PP2A to p65, thereby maintaining p65 in a phosphorylated state. We further show that PHF20 levels correlate with p65 phosphorylation levels in human glioma specimens. Our work identifies PHF20 as a novel regulator of NF-κB activation and suggests that elevated expression of PHF20 may drive constitutive NF-κB activation in some cancers.

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