Abstract
PIWI-interacting RNAs are a distinct group of small noncoding RNAs that are abundantly expressed in the animal germ line and are involved in silencing transposable genetic elements to maintain genome integrity. Accumulating evidence suggests that PIWI-interacting RNAs are also capable of mediating DNA methylation and thus can silence genes related to cancer, acting either as tumor suppressors or oncogenes. In recent years, several studies have significantly improved the understanding of PIWI-interacting RNA biogenesis, characterization, and function. Here, we discuss these recent findings and highlight some aspects of the role of PIWI-interacting RNAs in epigenetic modifications, the possible cancer implications and the effect of nutrition. Finally, we provide a brief description of the PIWI-interacting RNAs data analysis workflow and suggest some potential biological and clinical applications of these important molecules.
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- 10A:
-
Adenosine at position 10
- AGO3:
-
Argonaute 3
- AUB:
-
Aubergine
- ChIP:
-
Chromatin immunoprecipitation
- CTCs:
-
Circulating tumor cells
- DMR:
-
Differentially methylated region
- DNMT3L:
-
DNA-methyltransferase 3-like
- DNMTs:
-
DNA methyltransferases
- EMT:
-
Epithelial mesenchymal transition
- ERM:
-
Ezrin/Radixin/Moesin
- FSH:
-
Follicle-stimulating hormone
- H3K9:
-
Histone H3 lysine 9
- HENMT1:
-
Hen methyltransferase homolog 1
- HMTs:
-
Histone methyltransferases
- HP1:
-
Heterochromatin 1 protein
- LINE1:
-
Long interspersed element-1
- lncRNAs:
-
Long noncoding RNAs
- mRNA:
-
Messenger RNA
- miRNAs:
-
MicroRNAs
- ncRNAs:
-
Noncoding RNAs
- NGS:
-
Next-generation sequencing
- nt:
-
Nucleotides
- piRISC:
-
piRNA-Induced silencing complex
- piRNAs:
-
PIWI-interacting RNAs
- piRNA-seq:
-
piRNA sequencing
- PIWI:
-
P-element Induced Wimpy Testis
- PNLDC1:
-
Poly(A)-specific ribonuclease PARN-like domain-containing protein 1
- pre-piRNA:
-
piRNA precursor
- SAM:
-
S-adenosylmethionine
- SDMAs:
-
Symmetric dimethylarginines
- siRNAs:
-
Small interfering RNAs
- ssRNA:
-
Single-stranded RNA
- Su (var) 3–9:
-
Suppressor of variegation 3–9
- TDRD:
-
Tudor domain
- TEs:
-
Transposable elements
- Zuc:
-
Zucchini
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Calcagno, D.Q., Mota, E.R.d., Moreira, F.C., de Sousa, S.B.M., Burbano, R.R., Assumpção, P.P. (2019). Role of PIWI-Interacting RNA (piRNA) as Epigenetic Regulation. In: Patel, V., Preedy, V. (eds) Handbook of Nutrition, Diet, and Epigenetics. Springer, Cham. https://doi.org/10.1007/978-3-319-55530-0_77
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DOI: https://doi.org/10.1007/978-3-319-55530-0_77
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