Pubfacts - Scientific Publication Data
  • Categories
  • |
  • Journals
  • |
  • Authors
  • Login
  • Categories
  • Journals

Search Our Scientific Publications & Authors

Publications
  • Publications
  • Authors
find publications by category +
Translate page:

Post-translational Down-regulation of Melanoma Antigen-A11 (MAGE-A11) by Human p14-ARF Tumor Suppressor.

Authors:
John T Minges Gail Grossman Ping Zhang Tal Kafri Elizabeth M Wilson

J Biol Chem 2015 Oct 1;290(41):25174-87. Epub 2015 Sep 1.

From the Laboratories for Reproductive Biology, Department of Pediatrics, Lineberger Comprehensive Cancer Center, Biochemistry and Biophysics, University of North Carolina, Chapel Hill, North Carolina 27599

X-linked primate-specific melanoma antigen-A11 (MAGE-A11) is a human androgen receptor (AR) coactivator and proto-oncogene expressed at low levels in normal human reproductive tract tissues and at higher levels in castration-resistant prostate cancer where it is required for androgen-dependent cell growth. In this report, we show that MAGE-A11 is targeted for degradation by human p14-ARF, a tumor suppressor expressed from an alternative reading frame of the p16 cyclin-dependent kinase inhibitor INK4a/ARF gene. MAGE-A11 degradation by the proteasome was mediated by an interaction with p14-ARF and was independent of lysine ubiquitination. A dose-dependent inverse relationship between MAGE-A11 and p14-ARF correlated with p14-ARF inhibition of the MAGE-A11-induced increase in androgen-dependent AR transcriptional activity and constitutive activity of a splice variant-like AR. Reciprocal stabilization between MAGE-A11 and AR did not protect against degradation promoted by p14-ARF. p14-ARF prevented MAGE-A11 interaction with the E2F1 oncoprotein and inhibited the MAGE-A11-induced increase in E2F1 transcriptional activity. Post-translational down-regulation of MAGE-A11 promoted by p14-ARF was independent of HDM2, the human homologue of mouse double minute 2, an E3 ubiquitin ligase inhibited by p14-ARF. However, MAGE-A11 had a stabilizing effect on HDM2 in the absence or presence of p14-ARF and cooperated with HDM2 to increase E2F1 transcriptional activity in the absence of p14-ARF. We conclude that degradation of MAGE-A11 promoted by the human p14-ARF tumor suppressor contributes to low levels of MAGE-A11 in nontransformed cells and that higher levels of MAGE-A11 associated with low p14-ARF increase AR and E2F1 transcriptional activity and promote the development of castration-resistant prostate cancer.

Download full-text PDF

Source
http://dx.doi.org/10.1074/jbc.M115.663641DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4599020PMC
October 2015

Publication Analysis

Top Keywords

transcriptional activity
16
p14-arf
13
human p14-arf
12
tumor suppressor
12
p14-arf tumor
12
mage-a11
12
e2f1 transcriptional
12
increase e2f1
12
low levels
8
promoted p14-arf
8
levels mage-a11
8
mage-a11-induced increase
8
higher levels
8
prostate cancer
8
castration-resistant prostate
8
antigen-a11 mage-a11
8
mage-a11 promoted
8
melanoma antigen-a11
8
p14-arf independent
8
mage-a11 human
8

Altmetric Statistics


Show full details
1 Total Shares
1 Tweets
1 Citations

Similar Publications

A single amino acid substitution in the R2R3 conserved domain of the BrPAP1a transcription factor impairs anthocyanin production in turnip (Brassica rapa subsp. rapa).

Authors:
Jianfei Yang Hyon Dok Song Yunzhu Chen Bowei Chen Minjun Kim Pyol Kim Saneyuki Kawabata Yuhua Li Yu Wang

Plant Physiol Biochem 2021 Feb 22;162:124-136. Epub 2021 Feb 22.

Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, China; College of Life Science, Northeast Forestry University, Harbin, 150040, China. Electronic address:

The purple pigmentation in the epidermis of swollen roots of 'Tsuda' turnip (Brassica rapa subsp. rapa) is induced by light, providing a good system to investigate the genetic mechanism of light-dependent anthocyanin biosynthesis in B. rapa. Read More

View Article and Full-Text PDF
February 2021
Similar Publications

Neoisoliquiritin exerts tumor suppressive effects on prostate cancer by repressing androgen receptor activity.

Authors:
Changbao Chen Rui Shao Bin Li Yu Zhai Taiyi Wang Xin Li Lin Miao Juyang Huang Rui Liu Erwei Liu Yan Zhu Xiumei Gao Han Zhang Yu Wang

Phytomedicine 2021 Feb 14;85:153514. Epub 2021 Feb 14.

School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, West Area, Tuanbo New Town, Jinghai District, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China. Electronic address:

Background: Prostate cancer (PCa) is a major cause of morbidity and mortality in men in both developed and developing countries. Androgens and the androgen receptor (AR) play predominant roles in the progression of PCa. Neoisoliquiritin (NEO) belongs to the class of licorice (Glycyrrhiza) flavonoids, which have a variety of biological activities including anti-depressant, anti-tumor-promoting, and anti-inflammation properties. Read More

View Article and Full-Text PDF
February 2021
Similar Publications

Factors and virological significance of hepatitis B virus pregenomic RNA after 5 years of antiviral therapy.

Authors:
Jiali Pan Jinghang Xu Hao Luo Ning Tan Qian Kang Hongyu Chen Ran Cheng Yifan Han Yuqing Yang Xiaoyuan Xu

Int J Infect Dis 2021 Mar 3. Epub 2021 Mar 3.

Department of Infectious Diseases, Peking University First Hospital, Beijing, 100034, China. Electronic address:

Objectives: To investigate the factors and the virological significance of serum hepatitis B virus (HBV) pgRNA after long-term antiviral therapy with nucleos(t)ide analogues (NAs) in chronic hepatitis B (CHB) patients.

Methods: In total, 51 treatment-naïve CHB patients were included in the study. Clinical data were collected at baseline and after 5 years and at year 10 of antiviral treatment. Read More

View Article and Full-Text PDF
March 2021
Similar Publications

HGF/c-Met regulates p22 subunit of the NADPH oxidase complex in primary mouse hepatocytes by transcriptional and post-translational mechanisms.

Authors:
Arturo Simoni-Nieves Denise Clavijo-Cornejo Soraya Salas-Silva Oscar Alejandro Escobedo-Calvario Leticia Bucio Verónica Souza María Concepción Gutiérrez-Ruiz Roxana U Miranda-Labra Luis Enrique Gomez-Quiroz

Ann Hepatol 2021 Mar 3:100339. Epub 2021 Mar 3.

Área de Medicina Experimental y Traslacional, Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico; Laboratorio de Medicina Experimental, Unidad de Medicina Traslacional, IIB, UNAM/Instituto Nacional de Cardiología Ignacio Chavez, Mexico City, Mexico. Electronic address:

Introduction And Objectives: It is well-known that signaling mediated by the hepatocyte growth factor (HGF) and its receptor c-Met in the liver is involved in the control of cellular redox status and oxidative stress, particularly through its ability to induce hepatoprotective gene expression by activating survival pathways in hepatocytes. It has been reported that HGF can regulate the expression of some members of the NADPH oxidase family in liver cells, particularly the catalytic subunits and p22. In the present work we were focused to characterize the mechanism of regulation of p22 by HGF and its receptor c-Met in primary mouse hepatocytes as a key determinant for cellular redox regulation. Read More

View Article and Full-Text PDF
March 2021
Similar Publications

Physalis angulata reduces the progression of chronic experimental periodontitis by immunomodulatory mechanisms.

Authors:
Paula Schons Vieceli Paulo José Lima Juiz Pedro Santana Sales Lauria Ricardo David Couto Therezinha Coelho Barbosa Tomassini Ivone Maria Ribeiro Milena Botelho Pereira Soares Cristiane Flora Villarreal

J Ethnopharmacol 2021 Mar 3:113986. Epub 2021 Mar 3.

College of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil; Gonçalo Moniz Institute, FIOCRUZ, Salvador, Bahia, Brazil. Electronic address:

Ethnopharmacological Relevance: Physalis angulata is an herb found in tropical and subtropical regions of the world; it is widely applied in popular medicine due to the therapeutic properties of the whole plant and its parts. Extracts and infusions of this plant have been extensively applied in folk medicine worldwide to treat inflammatory and immune-mediated diseases, including oral inflammatory conditions such as sore throat and gingivitis.

Aim Of The Study: The present study was designed to investigate the protective effects of the ethanolic extract of P. Read More

View Article and Full-Text PDF
March 2021
Similar Publications
© 2021 PubFacts.
  • About PubFacts
  • Privacy Policy
  • Sitemap