scholarly journals L-Ascorbic Acid in the Epigenetic Regulation of Cancer Development and Stem Cell Reprogramming

Acta Naturae ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 5-14
Author(s):  
A. P. Kovina ◽  
N. V. Petrova ◽  
S. V. Razin ◽  
O. L. Kantidze

Recent studies have significantly expanded our understanding of the mechanisms of L-ascorbic acid (ASC, vitamin C) action, leading to the emergence of several hypotheses that validate the possibility of using ASC in clinical practice. ASC may be considered an epigenetic drug capable of reducing aberrant DNA and histone hypermethylation, which could be helpful in the treatment of some cancers and neurodegenerative diseases. The clinical potency of ASC is also associated with regenerative medicine; in particular with the production of iPSCs. The effect of ASC on somatic cell reprogramming is most convincingly explained by a combined enhancement of the activity of the enzymes involved in the active demethylation of DNA and histones. This review describes how ASC can affect the epigenetic status of a cell and how it can be used in anticancer therapy and stem cell reprogramming.

2012 ◽  
Vol 72 (21) ◽  
pp. 5635-5645 ◽  
Author(s):  
Lan Yi ◽  
Chiwei Lu ◽  
Wenwei Hu ◽  
Yvonne Sun ◽  
Arnold J. Levine

Author(s):  
Xinhui Liu ◽  
Aamir Khan ◽  
Huan Li ◽  
Shensen Wang ◽  
Xuechai Chen ◽  
...  

: Emerging evidence suggests that ascorbic acid (vitamin C) enhances the reprogramming process by multiple mechanisms. This is primarily due to its cofactor role in Fe(II) and 2-oxoglutarate-dependent dioxygenases, including the DNA demethylases Ten Eleven Translocase (TET) and histone demethylases. Epigenetic variations have been shown to play a critical role in somatic cell reprogramming. DNA methylation and histone methylation are extensively recognized as barriers to somatic cell reprogramming. N6-methyladenosine (m6A), known as RNA methylation, is an epigenetic modification of mRNAs and has also been shown to play a role in regulating cellular reprogramming. Multiple cofactors are reported to promote the activity of demethylases, including vitamin C. This review focuses on examining the evidence and mechanism of vitamin C in DNA and histone demethylation and highlights its potential involvement in regulating m6A demethylation. It also shows the significant contribution of vitamin C in epigenetic regulation and the affiliation of demethylases with vitamin C-facilitated epigenetic reprogramming.


2014 ◽  
Vol 395 (11) ◽  
pp. 1315-1320 ◽  
Author(s):  
Alberto Martín-Lorenzo ◽  
Inés Gonzalez-Herrero ◽  
Guillermo Rodríguez-Hernández ◽  
Idoia García-Ramírez ◽  
Carolina Vicente-Dueñas ◽  
...  

Abstract A cancer dogma states that inactivation of oncogene(s) can cause cancer remission, implying that oncogenes are the Achilles’ heel of cancers. This current model of cancer has kept oncogenes firmly in focus as therapeutic targets and is in agreement with the fact that in human cancers all cancerous cells, with independence of the cellular heterogeneity existing within the tumour, carry the same oncogenic genetic lesions. However, recent studies of the interactions between an oncogene and its target cell have shown that oncogenes contribute to cancer development via developmental reprogramming of the epigenome within the target cell. These results provide the first evidence that carcinogenesis can be initiated by epigenetic stem cell reprogramming, and uncover a new role for oncogenes in the origin of cancer. Here we analyse these evidences and discuss how this vision offers new avenues for developing novel anti-cancer interventions.


2013 ◽  
Vol 13 (6) ◽  
pp. 676-690 ◽  
Author(s):  
Li Wang ◽  
Yi-Liang Miao ◽  
Xiaofeng Zheng ◽  
Brad Lackford ◽  
Bingying Zhou ◽  
...  

2021 ◽  
Vol 12 (7) ◽  
Author(s):  
Agnes Fütterer ◽  
Amaia Talavera-Gutiérrez ◽  
Tirso Pons ◽  
Jesús de Celis ◽  
Julio Gutiérrez ◽  
...  

AbstractEmbryonic stem cell (ESC) differentiation and somatic cell reprogramming are biological processes governed by antagonistic expression or repression of a largely common set of genes. Accurate regulation of gene expression is thus essential for both processes, and alterations in RNA processing are predicted to negatively affect both. We show that truncation of the DIDO gene alters RNA splicing and transcription termination in ESC and mouse embryo fibroblasts (MEF), which affects genes involved in both differentiation and reprogramming. We combined transcriptomic, protein interaction, and cellular studies to identify the underlying molecular mechanism. We found that DIDO3 interacts with the helicase DHX9, which is involved in R-loop processing and transcription termination, and that DIDO3-exon16 deletion increases nuclear R-loop content and causes DNA replication stress. Overall, these defects result in failure of ESC to differentiate and of MEF to be reprogrammed. MEF immortalization restored impaired reprogramming capacity. We conclude that DIDO3 has essential functions in ESC differentiation and somatic cell reprogramming by supporting accurate RNA metabolism, with its exon16-encoded domain playing the main role.


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