4.6 Article

Post-Transcriptional and Post-Translational Regulation of PTEN by Transforming Growth Factor-β1

Journal

JOURNAL OF CELLULAR BIOCHEMISTRY
Volume 106, Issue 6, Pages 1102-1112

Publisher

WILEY
DOI: 10.1002/jcb.22100

Keywords

POST-TRANSCRIPTIONAL; TGF-beta 1; PTEN; CODING SEQUENCE; SMAD

Funding

  1. Shanghai Leading Academic Discipline Project [B110]

Ask authors/readers for more resources

PTEN is a critical tumor suppressor gene mutated frequently in various human cancers. Previous studies have showed that PTEN mRNA expression is down-regulated by TGF-beta 1 in various cell lines. In present study, we have found that TGF-beta 1 down-regulates PTEN mRNA and protein expression in a dose- and time-dependent manner in hepatocarcinoma cell line SMMC-7721. Based on the PTEN promoter dual-luciferase report assay, we have found that PTEN transcription is not affected by TGF-beta 1. By using transcriptional inhibitor actinomycin D (Act D), the turnover rate of PTEN transcripts appeared to be accelerated during TGF-beta 1 stimulation, which indicated that down-regulation of PTEN by TGF-beta 1 was post-transcriptional. What interested us was that transfection of PTEN coding sequence increased TGF-beta 1-induced degradation of PTEN mRNA, suggesting that PTEN coding region was account for TGF-beta 1-mediated down-regulation of PTEN. In addition, TGF-beta 1 down-regulated PTEN expression was blocked by the T beta IR inhibitor SB43 1542 and the p38 inhibitor SB203580, suggesting Smad and p38 MAPK signal pathways played crucial roles in PTEN down-regulation via TGF-beta 1 stimulation. In this study, we also found TGF-beta 1 accelerated down-regulation of PTEN through the ubiquitin-proteasome pathway. Collectively, our data clearly demonstrated that TGF-beta 1 mediated down-regulation of PTEN was post-transcriptional and post-translational, depending on its coding sequence, Smad and p38-MAPK signal pathways were involved in this down-regulation. J. Cell. Biochem. 106: 1102-1112, 2009. (c) 2009 Wiley-Liss, Inc.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Biochemistry & Molecular Biology

MPP8 and SIRT1 crosstalk in E-cadherin gene silencing and epithelial-mesenchymal transition

Lidong Sun, Kenji Kokura, Victoria Izumi, John M. Koomen, Edward Seto, Jiandong Chen, Jia Fang

EMBO REPORTS (2015)

Review Biochemistry & Molecular Biology

Epigenetic regulation of epithelial-mesenchymal transition

Lidong Sun, Jia Fang

CELLULAR AND MOLECULAR LIFE SCIENCES (2016)

Article Biochemistry & Molecular Biology

E3-Independent Constitutive Monoubiquitination Complements Histone Methyltransferase Activity of SETDB1

Lidong Sun, Jia Fang

MOLECULAR CELL (2016)

Article Cell Biology

The PI3K-Akt pathway regulates calpain 6 expression, proliferation, and apoptosis

Yonglei Liu, Chuanzhong Mei, Lidong Sun, Xin Li, Mingzhu Liu, Liying Wang, Zengxia Li, Peng Yin, Chao Zhao, Yinghong Shi, Shuangjian Qiu, Jia Fan, Xiliang Zha

CELLULAR SIGNALLING (2011)

Article Chemistry, Medicinal

Discovery of (S)-1-(1-(Imidazo[1,2-a]pyridin-6-yl)ethyl)-6-(1-methyl-1H-pyrazol-4-yl)-1H-[1,2,3]triazolo[4,5-b]pyrazine (Volitinib) as a Highly Potent and Selective Mesenchymal-Epithelial Transition Factor (c-Met) Inhibitor in Clinical Development for Treatment of Cancer

Hong Jia, Guangxiu Dai, Jianyang Weng, Zhulin Zhang, Qing Wang, Feng Zhou, Longxian Jiao, Yumin Cui, Yongxin Ren, Shiming Fan, Jinghong Zhou, Weiguo Qing, Yi Gu, Jian Wang, Yang Sai, Weiguo Su

JOURNAL OF MEDICINAL CHEMISTRY (2014)

Article Oncology

Volitinib, a potent and highly selective c-Met inhibitor, effectively blocks c-Met signaling and growth in c-MET amplified gastric cancer patient-derived tumor xenograft models

Paul R. Gavine, Yongxin Ren, Lu Han, Jing Lu, Shiming Fan, Wei Zhang, Wen Xu, Yuan Jie Liu, Tianwei Zhang, Haihua Fu, Yongjuan Yu, Huiying Wang, Shirlian Xu, Feng Zhou, Xinying Su, XiaoLu Yin, Liang Xie, Linfang Wang, Weiguo Qing, Longxian Jiao, Weiguo Su, Q. May Wang

MOLECULAR ONCOLOGY (2015)

Article Multidisciplinary Sciences

Comparative Proteomic Analysis of Gallbladder Bile Proteins Related to Cholesterol Gallstones

Diancai Zhang, Jianbin Xiang, Liying Wang, Zhibin Xu, Lidong Sun, Feng Zhou, Xiliang Zha, Duan Cai

PLOS ONE (2013)

Article Cell Biology

DOT1L O-GlcNAcylation promotes its protein stability and MLL-fusion leukemia cell proliferation

Tanjing Song, Qingli Zou, Yingying Yan, Suli Lv, Neng Li, Xuefeng Zhao, Xianyun Ma, Haigang Liu, Borui Tang, Lidong Sun

Summary: DOT1L protein stability is regulated by extracellular glucose levels through the HBP pathway. O-GlcNAcylation and UBE3C are critical determinants of DOT1L protein abundance, affecting cell proliferation and histone H3K79 methylation in MLL-fusion leukemia.

CELL REPORTS (2021)

Review Cell Biology

Versatile functions of RNA m6A machinery on chromatin

Tanjing Song, Suli Lv, Neng Li, Xuefeng Zhao, Xianyun Ma, Yingying Yan, Weixia Wang, Lidong Sun

Summary: m6A machinery, a crucial RNA modification mechanism, is involved in the regulation of RNA processing and function. Recent studies have demonstrated that m6A machinery can be recruited to chromatin by various factors, leading to direct regulation of chromatin biology such as transcription, DNA damage repair, and DNA recombination.

JOURNAL OF MOLECULAR CELL BIOLOGY (2022)

Article Biochemistry & Molecular Biology

Lysine demethylase KDM1A promotes cell growth via FKBP8-BCL2 axis in hepatocellular carcinoma

Suli Lv, Xuefeng Zhao, Erlei Zhang, Yingying Yan, Xianyun Ma, Neng Li, Qingli Zou, Lidong Sun, Tanjing Song

Summary: This study identifies a functional KDM1A-FKBP8-BCL2 axis in hepatocellular carcinoma (HCC), showing that KDM1A can demethylate FKBP8 to enhance the stability of BCL2, promoting HCC cell growth. The cytoplasmic localization of KDM1A is regulated by acetylation at lysine-117 by KAT8. In addition, the study reveals that KDM1A and BCL2 protein levels increase during acquired sorafenib resistance and inhibiting KDM1A can antagonize this resistance.

JOURNAL OF BIOLOGICAL CHEMISTRY (2022)

Article Biotechnology & Applied Microbiology

Efficient and reversible Cas13d-mediated knockdown with an all-in-one lentivirus-vector

Suli Lv, Xuefeng Zhao, Xianyun Ma, Qingli Zou, Neng Li, Yingying Yan, Lidong Sun, Tanjing Song

Summary: RfxCas13d is an RNA-guided RNA endonuclease that can knockdown gene expression with high specificity. In this study, we investigated the mechanism of its inducible knockdown and designed an all-in-one Cas13d lentivirus vector that allows efficient and inducible knockdown depending on the dosage of doxycycline. Furthermore, we found that Cas13d has a short half-life in mammalian cells, allowing prompt restoration of knockdown after doxycycline withdrawal. This research has significant implications for future applications.

FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY (2022)

Article Biochemistry & Molecular Biology

TRIM28 represses renal cell carcinoma cell proliferation by inhibiting TFE3/KDM6A-regulated autophagy

Tanjing Song, Suli Lv, Xianyun Ma, Xuefeng Zhao, Li Fan, Qingli Zou, Neng Li, Yingying Yan, Wen Zhang, Lidong Sun

Summary: TRIM28 inhibits autophagy to suppress kidney cancer cell proliferation. TFE3 activates autophagic gene expression and interacts with histone demethylase KDM6A to upregulate autophagic genes. This study identifies a critical signaling axis in kidney cancer cell autophagy and proliferation.

JOURNAL OF BIOLOGICAL CHEMISTRY (2023)

Article Oncology

SCR-6852, an oral and highly brain-penetrating estrogen receptor degrader (SERD), effectively shrinks tumors both in intracranial and subcutaneous ER plus breast cancer models

Feng Zhou, Guimei Yang, Liting Xue, Yajing Liu, Yao Guo, Ji Zhu, Linlin Yuan, Peng Gu, Feng Tang, Jinwen Shan, Renhong Tang

Summary: SCR-6852 is a novel SERD that exhibits high potency in inducing ERα protein degradation and pure antagonistic activity on ERα signaling both in vitro and in vivo. Due to its high brain penetrability, SCR-6852 could be used to treat breast cancer patients with brain metastasis.

BREAST CANCER RESEARCH (2023)

Review Oncology

O-GlcNAcylation links oncogenic signals and cancer epigenetics

Lidong Sun, Suli Lv, Tanjing Song

Summary: Prevalent dysregulation of epigenetic modifications plays a pivotal role in cancer. O-GlcNAcylation, a protein modification that affects physiology and pathophysiology, is closely related to epigenetic modifications, and oncogenic signals regulate epigenetic abnormalities in cancer by modulating O-GlcNAcylation dysregulation.

DISCOVER ONCOLOGY (2021)

No Data Available