Abstract
DNA methylation is one among the major grounds of cancer progression which is characterized by the addition of a methyl group to the promoter region of the gene thereby causing gene silencing or increasing the probability of mutations; however, in bacteria, methylation is used as a defense mechanism where DNA protection is by addition of methyl groups making restriction enzymes unable to cleave. Hypermethylation and hypomethylation both pose as leading causes of oncogenesis; the former being more frequent which occurs at the CpG islands present in the promoter region of the genes, whereas the latter occurs globally in various genomic sequences. Reviewing methylation profiles would help in the detection and treatment of cancers. Demethylation is defined as preventing methyl group addition to the cytosine DNA base which could cause cancers in case of global hypomethylation, however, upon further investigation; it could be used as a therapeutic tool as well as for drug design in cancer treatment. In this review, we have studied the molecules that induce and enzymes (DNMTs) that bring about methylation as well as comprehend the correlation between methylation with transcription factors and various signaling pathways. DNA methylation has also been reviewed in terms of how it could serve as a prognostic marker and the various therapeutic drugs that have come into the market for reversing methylation opening an avenue toward curing cancers.
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Data availability
Data are available on request from the authors.
Abbreviations
- CpG:
-
5′-Cytosine-phosphate-guanine-3′
- mCpG:
-
Methyl CpG
- DNMT:
-
DNA methyltransferase
- TET:
-
Ten-eleven translocations
- TSG:
-
Tumor suppressor gene
- TSS:
-
Transcription start site
- RB 1:
-
Retinoblastoma transcriptional corepressor 1
- P53:
-
Protein 53
- CDKN2A:
-
Cyclin-dependent kinase inhibitor 2A
- CDKN2B:
-
Cyclin-dependent kinase inhibitor 2B
- H-RAS:
-
Harvey rat sarcoma virus
- c-Myc:
-
Cellular myelocytomatosis
- NOTCH 1:
-
Neurogenic locus notch homolog protein 1
- plau:
-
Plasminogen activator urokinase
- AML:
-
Acute myeloid leukemia
- TDG:
-
Thymine DNA glycosylase
- TGB1:
-
Transforming growth factor beta 1
- ETS:
-
Erythroblast transformation specific
- MGMT:
-
O(6)-methylguanine DNA methyltransferase
- EGFP:
-
Enhanced green fluorescent protein
- MAPK:
-
Mitogen-activated protein kinase
- CDH:
-
Cadherin
- RASSF2A:
-
Ras association domain family 2
- PTEN:
-
Phosphatase and Tensin Homolog deleted on Chromosome 10
- E2F2:
-
E2F transcription factor
- TF:
-
Transcription factor
- NF–kB:
-
Nuclear factor kappa-light-chain-enhancer of activated B cells
- REST:
-
RE1-Silencing Transcription factor
- CTSC:
-
Cathepsin c
- OCT 4:
-
Octamer-binding transcription factor 4
- MBD:
-
Methyl-binding domain proteins
- JAG 2:
-
Jagged canonical Notch ligand 2
- ARF:
-
Alternative reading frame
- MDM2:
-
Murine double minute 2
- NRF2:
-
Nuclear factor erythroid 2-related factor 2
- KEAP1:
-
Kelch-like ECH-associated protein 1
- PIK3K:
-
Phosphoinositide 3-kinase
- WNT:
-
Wingless-related integration site
- TBX 2:
-
T-box transcription factor 2
- TWIST1:
-
TWIST-related protein 1
- AKT:
-
Ak strain transforming
- ARE:
-
Antioxidant response element
- SMAD:
-
Suppressor of Mothers against Decapentaplegic
- PLAGL2:
-
Pleomorphic adenoma gene 2
- IGF2:
-
Insulin-like growth factor 2
- AZA:
-
5-Azacytidine
- DAC:
-
5-Aza-2′-deoxycytidine
- EGCG:
-
Epigallocatechin gallate
- SLE:
-
Systemic lupus erythematosus
- RARβ:
-
Retinoic acid receptor beta
- MCF 7:
-
Michigan Cancer Foundation-7
- PITX 2:
-
Paired-like homeodomain transcription factor 2
- LAC:
-
Lung adenocarcinoma
- LAT:
-
Linker for activation of T cells
- HOXD3:
-
Homeobox D3
- NFE2L3:
-
Nuclear factor (erythroid 2)-like factor 3
- MDS:
-
Myelodysplastic syndrome
- CRISPR:
-
Clustered regularly interspaced short palindromic repeats
- PROTOC:
-
Proteolysis targeting chimeric
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Funding
This research was supported by the Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Govt. of India (Sanction Order No. ECR/2016/000965), KOUSTAV SARKAR.
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SB contributed to investigation, data curation, writing of the original draft, and visualization; NJ contributed to investigation, data curation, writing of the original draft, and visualization; GS contributed to writing, reviewing, & editing of the manuscript; SR contributed to writing, reviewing, & editing of the manuscript; Koustav Sarkar contributed to conceptualization, writing, reviewing, & editing of the manuscript, supervision, project administration, and funding acquisition.
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Bhootra, S., Jill, N., Shanmugam, G. et al. DNA methylation and cancer: transcriptional regulation, prognostic, and therapeutic perspective. Med Oncol 40, 71 (2023). https://doi.org/10.1007/s12032-022-01943-1
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DOI: https://doi.org/10.1007/s12032-022-01943-1