Abstract
DLK1-DIO3 represents an imprinted cluster which genes are involved in physiological cell biology as early as the stem cell level and in the pathogenesis of several diseases. Transcription factor-mediated induced pluripotent cells (iPSCs) are considered an unlimited source of patient-specific hematopoietic stem cells for clinical application in patient-tailored regenerative medicine. However, to date there is no marker established able to distinguish embryonic stem cell-equivalent iPSCs or safe human iPSCs. Recent findings suggest that the DLK1-DIO3 locus possesses the potential to represent such a marker but there are also contradictory data. This review aims to report the current data on the topic describing both sides of the coin.

Similar content being viewed by others
Explore related subjects
Discover the latest articles and news from researchers in related subjects, suggested using machine learning.References
Ambrosio R, Damiano V, Sibilio A et al (2013) Epigenetic control of type 2 and 3 deiodinases in myogenesis: role of Lysine-specific Demethylase enzyme and FoxO3. Nucleic Acids Res 41:3551–3562
Andersen DC, Laborda J, Baladron V et al (2013) Dual role of delta-like 1 homolog (DLK1) in skeletal muscle development and adult muscle regeneration. Development 140:3743–3753
Andersen DC, Petersson SJ, Jorgensen LH et al (2009) Characterization of DLK1 + cells emerging during skeletal muscle remodeling in response to myositis, myopathies, and acute injury. Stem Cells 27:898–908
Argiropoulos B, Palmqvist L, Imren S et al (2010) Meis1 disrupts the genomic imprint of Dlk1 in a NUP98-HOXD13 leukemia model. Leukemia 24:1788–1791
Balik V, Srovnal J, Sulla I et al (2013) MEG3: a novel long noncoding potentially tumor-suppressing RNA in meningiomas. J Neurooncol 112:1–8
Barlow DP, Bartolomei MS (2014) Genomic imprinting in mammals. Cold Spring Harb Perspect Biol 6(2). doi:10.1101/cshperspect.a018382
Begum A, Kim Y, Lin Q et al (2012) DLK1, delta-like 1 homolog (Drosophila), regulates tumor cell differentiation in vivo. Cancer Lett 318:26–33
Begum A, Lin Q, Yu C et al (2014) Interaction of delta-like 1 homolog (Drosophila) with prohibitins and its impact on tumor cell clonogenicity. Mol Cancer Res 12:155–164
Benetatos L, Dasoula A, Hatzimichael E et al (2008) Promoter hypermethylation of the MEG3 (DLK1/MEG3) imprinted gene in multiple myeloma. Clin Lymphoma Myeloma 8:171–175
Benetatos L, Hatzimichael E, Dasoula A et al (2010) CpG methylation analysis of the MEG3 and SNRPN imprinted genes in acute myeloid leukemia and myelodysplastic syndromes. Leuk Res 34:148–153
Benetatos L, Hatzimichael E, Londin E et al (2013) The microRNAs within the DLK1-DIO3 genomic region: involvement in disease pathogenesis. Cell Mol Life Sci 70:795–814
Benetatos L, Vartholomatos G, Hatzimichael E (2011) MEG3 imprinted gene contribution in tumorigenesis. Int J Cancer 129:773–779
Benetatos L, Voulgaris E, Vartholomatos G (2012) DLK1-MEG3 imprinted domain microRNAs in cancer biology. Crit Rev Eukaryot Gene Expr 22:1–15
Bock C, Kiskinis E, Verstappen G et al (2011) Reference Maps of human ES and iPS cell variation enable high-throughput characterization of pluripotent cell lines. Cell 144:439–452
Brandvain Y, Van Cleve J, Ubeda F et al (2011) Demography, kinship, and the evolving theory of genomic imprinting. Trends Genet 27:251–257
Carey BW, Markoulaki S, Hanna JH et al (2011) Reprogramming factor stoichiometry influences the epigenetic state and biological properties of induced pluripotent stem cells. Cell Stem Cell 9:588–598
Cheng D, Li Z, Liu Y et al (2012) Kinetic analysis of porcine fibroblast reprogramming toward pluripotency by defined factors. Cell Reprogram 14:312–323
Chou BK, Cheng L (2013) And then there were none: no need for pluripotency factors to induce reprogramming. Cell Stem Cell 13:261–262
Cui XS, Zhang DX, Ko YG et al (2009) Aberrant epigenetic reprogramming of imprinted microRNA-127 and Rtl1 in cloned mouse embryos. Biochem Biophys Res Commun 379:390–394
Da Rocha ST, Charalambous M, Lin SP et al (2009) Gene dosage effects of the imprinted delta-like homologue 1 (dlk1/pref1) in development: implications for the evolution of imprinting. PLoS Genet 5:e1000392
Doulatov S, Notta F, Laurenti E et al (2012) Hematopoiesis: a human perspective. Cell Stem Cell 10:120–136
Doulatov S, Vo LT, Chou SS et al (2013) Induction of multipotential hematopoietic progenitors from human pluripotent stem cells via respecification of lineage-restricted precursors. Cell Stem Cell 13:459–470
Dudek KM, Suter L, Darras VM et al (2013) Decreased translation of Dio3 mRNA is associated with drug-induced hepatotoxicity. Biochem J 453:71–82
Falix FA, Aronson DC, Lamers WH et al (2012) Possible roles of DLK1 in the Notch pathway during development and disease. Biochim Biophys Acta 1822:988–995
Ferron SR, Charalambous M, Radford E et al (2011) Postnatal loss of Dlk1 imprinting in stem cells and niche astrocytes regulates neurogenesis. Nature 475:381–385
Gu T, He H, Han Z et al (2012) Expression of macro non-coding RNAs Meg8 and Irm in mouse embryonic development. Acta Histochem 114:392–399
Gueller S, Komor M, Nowak D et al (2010) Identification of defects in the transcriptional program during lineage-specific in vitro differentiation of CD34(+) cells selected from patients with both low- and high-risk myelodysplastic syndrome. Exp Hematol 38:718–732 e711–716
Guglielmelli P, Zini R, Bogani C et al (2007) Molecular profiling of CD34+ cells in idiopathic myelofibrosis identifies a set of disease-associated genes and reveals the clinical significance of Wilms’ tumor gene 1 (WT1). Stem Cells 25:165–173
Guo X, Liu Q, Wang G et al (2013) MicroRNA-29b is a novel mediator of Sox2 function in the regulation of somatic cell reprogramming. Cell Res 23:142–156
Henzler CM, Li Z, Dang J et al (2013) Staged miRNA re-regulation patterns during reprogramming. Genome Biol 14:R149
Hernandez A, Garcia B, Obregon MJ (2007) Gene expression from the imprinted Dio3 locus is associated with cell proliferation of cultured brown adipocytes. Endocrinology 148:3968–3976
Janssen R, Zuidwijk M, Muller A et al (2013) Cardiac expression of deiodinase type 3 (Dio3) following myocardial infarction is associated with the induction of a pluripotency microRNA signature from the Dlk1-Dio3 genomic region. Endocrinology 154:1973–1978
John RM, Lefebvre L (2011) Developmental regulation of somatic imprints. Differentiation 81:270–280
Kagami M, O’sullivan MJ, Green AJ et al (2010) The IG-DMR and the MEG3-DMR at human chromosome 14q32.2: hierarchical interaction and distinct functional properties as imprinting control centers. PLoS Genet 6:e1000992
Kameswaran V, Bramswig NC, Mckenna LB et al (2014) Epigenetic regulation of the DLK1-MEG3 microRNA cluster in human type 2 diabetic islets. Cell Metab 19:135–145
Kaneko S, Bonasio R, Saldana-Meyer R et al (2014) Interactions between JARID2 and noncoding RNAs regulate PRC2 recruitment to chromatin. Mol Cell 53:290–300
Kaneta M, Osawa M, Sudo K et al (2000) A role for pref-1 and HES-1 in thymocyte development. J Immunol 164:256–264
Kelley JM, Daley GQ (2013) Hematopoietic defects and iPSC disease modeling: lessons learned. Immunol Lett 155:18–20
Khoury H, Suarez-Saiz F, Wu S et al (2010) An upstream insulator regulates DLK1 imprinting in AML. Blood 115:2260–2263
Kim Y, Lin Q, Zelterman D et al (2009) Hypoxia-regulated delta-like 1 homologue enhances cancer cell stemness and tumorigenicity. Cancer Res 69:9271–9280
Langer F, Stickel J, Tessema M et al (2004) Overexpression of delta-like (Dlk) in a subset of myelodysplastic syndrome bone marrow trephines. Leuk Res 28:1081–1083
Li L, Forman SJ, Bhatia R (2005) Expression of DLK1 in hematopoietic cells results in inhibition of differentiation and proliferation. Oncogene 24:4472–4476
Li L, Liu B, Wapinski OL et al (2013) Targeted disruption of Hotair leads to homeotic transformation and gene derepression. Cell Rep 5:3–12
Li W, Zhao XY, Wan HF et al (2011) iPS cells generated without c-Myc have active Dlk1-Dio3 region and are capable of producing full-term mice through tetraploid complementation. Cell Res 21:550–553
Li X (2013) Genomic imprinting is a parental effect established in mammalian germ cells. Curr Top Dev Biol 102:35–59
Li Y, Sasaki H (2011) Genomic imprinting in mammals: its life cycle, molecular mechanisms and reprogramming. Cell Res 21:466–473
Liang G, Zhang Y (2013) Genetic and epigenetic variations in iPSCs: potential causes and implications for application. Cell Stem Cell 13:149–159
Liu L, Luo GZ, Yang W et al (2010) Activation of the imprinted Dlk1-Dio3 region correlates with pluripotency levels of mouse stem cells. J Biol Chem 285:19483–19490
Lujan E, Wernig M (2010) An imprinted signature helps isolate ESC-equivalent iPSCs. Cell Res 20:974–976
Luk JM, Burchard J, Zhang C et al (2011) DLK1-DIO3 genomic imprinted microRNA cluster at 14q32.2 defines a stemlike subtype of hepatocellular carcinoma associated with poor survival. J Biol Chem 286:30706–30713
Ma X, Zhang Y, Yang L et al (2012) The effects of increased expression of DLK1 gene on the pathogenesis of myelodysplastic syndromes. Clin Lymphoma Myeloma Leuk 12:261–268
Manodoro F, Marzec J, Chaplin T et al (2014) Loss of imprinting at the 14q32 domain is associated with microRNA overexpression in acute promyelocytic leukemia. Blood 123:2066–2074
Martin-Subero JI, Ammerpohl O, Bibikova M et al (2009) A comprehensive microarray-based DNA methylation study of 367 hematological neoplasms. PLoS One 4:e6986
Mcmurray EN, Schmidt JV (2012) Identification of imprinting regulators at the Meg3 differentially methylated region. Genomics 100:184–194
Mirshekar-Syahkal B, Haak E, Kimber GM et al (2013) Dlk1 is a negative regulator of emerging hematopoietic stem and progenitor cells. Haematologica 98:163–171
Nishino K, Toyoda M, Yamazaki-Inoue M et al (2011) DNA methylation dynamics in human induced pluripotent stem cells over time. PLoS Genet 7:e1002085
Pick M, Stelzer Y, Bar-Nur O et al (2009) Clone- and gene-specific aberrations of parental imprinting in human induced pluripotent stem cells. Stem Cells 27:2686–2690
Radford EJ, Ferron SR, Ferguson-Smith AC (2011) Genomic imprinting as an adaptative model of developmental plasticity. FEBS Lett 585:2059–2066
Riordan JD, Keng VW, Tschida BR et al (2013) Identification of rtl1, a retrotransposon-derived imprinted gene, as a novel driver of hepatocarcinogenesis. PLoS Genet 9:e1003441
Robinton DA, Daley GQ (2012) The promise of induced pluripotent stem cells in research and therapy. Nature 481:295–305
Schneider G, Bowser MJ, Shin DM et al (2014) The paternally imprinted DLK1-GTL2 locus is differentially methylated in embryonal and alveolar rhabdomyosarcomas. Int J Oncol 44:295–300
Seisenberger S, Peat JR, Reik W (2013) Conceptual links between DNA methylation reprogramming in the early embryo and primordial germ cells. Curr Opin Cell Biol 25:281–288
Sekita Y, Wagatsuma H, Nakamura K et al (2008) Role of retrotransposon-derived imprinted gene, Rtl1, in the feto-maternal interface of mouse placenta. Nat Genet 40:243–248
Semi K, Matsuda Y, Ohnishi K et al (2013) Cellular reprogramming and cancer development. Int J Cancer 132:1240–1248
Sommer CA, Christodoulou C, Gianotti-Sommer A et al (2012) Residual expression of reprogramming factors affects the transcriptional program and epigenetic signatures of induced pluripotent stem cells. PLoS One 7:e51711
Soubry A, Murphy SK, Wang F et al (2013) Newborns of obese parents have altered DNA methylation patterns at imprinted genes. Int J Obes (Lond). doi:10.1038/ijo.2013.193
Stadtfeld M, Apostolou E, Akutsu H et al (2010) Aberrant silencing of imprinted genes on chromosome 12qF1 in mouse induced pluripotent stem cells. Nature 465:175–181
Stadtfeld M, Apostolou E, Ferrari F et al (2012) Ascorbic acid prevents loss of Dlk1-Dio3 imprinting and facilitates generation of all-iPS cell mice from terminally differentiated B cells. Nat Genet 44(398–405):S391–S392
Sul HS (2009) Minireview: Pref-1: role in adipogenesis and mesenchymal cell fate. Mol Endocrinol 23:1717–1725
Takahashi N, Kobayashi R, Kono T (2010) Restoration of Dlk1 and Rtl1 is necessary but insufficient to rescue lethality in intergenic differentially methylated region (IG-DMR)-deficient mice. J Biol Chem 285:26121–26125
Takikawa S, Ray C, Wang X et al (2013) Genomic imprinting is variably lost during reprogramming of mouse iPS cells. Stem Cell Res 11:861–873
Traustadottir GA, Kosmina R, Sheikh SP et al (2013) Preadipocytes proliferate and differentiate under the guidance of Delta-like 1 homolog (DLK1). Adipocyte 2:272–275
Venkatraman A, He XC, Thorvaldsen JL et al (2013) Maternal imprinting at the H19-Igf2 locus maintains adult haematopoietic stem cell quiescence. Nature 500:345–349
Vlantis K, Wullaert A, Sasaki Y et al (2011) Constitutive IKK2 activation in intestinal epithelial cells induces intestinal tumors in mice. J Clin Invest 121:2781–2793
Wesemann DR, Portuguese AJ, Magee JM et al (2012) Reprogramming IgH isotype-switched B cells to functional-grade induced pluripotent stem cells. Proc Natl Acad Sci USA 109:13745–13750
Wolf JB (2013) Evolution of genomic imprinting as a coordinator of coadapted gene expression. Proc Natl Acad Sci USA 110:5085–5090
Xie P, Sun Y, Ouyang Q et al (2014) Physiological oxygen prevents frequent silencing of the DLK1-DIO3 cluster during human embryonic stem cells culture. Stem Cells 32:391–401
Xu X, Liu RF, Zhang X et al (2012) DLK1 as a potential target against cancer stem/progenitor cells of hepatocellular carcinoma. Mol Cancer Ther 11:629–638
Yamaguchi S, Shen L, Liu Y et al (2013) Role of Tet1 in erasure of genomic imprinting. Nature 504:460–464
Yanai H, Nakamura K, Hijioka S et al (2010) Dlk-1, a cell surface antigen on foetal hepatic stem/progenitor cells, is expressed in hepatocellular, colon, pancreas and breast carcinomas at a high frequency. J Biochem 148:85–92
Yang SM, Kim BJ, Norwood Toro L et al (2013) H1 linker histone promotes epigenetic silencing by regulating both DNA methylation and histone H3 methylation. Proc Natl Acad Sci USA 110:1708–1713
Yue LZ, Fu R, Wang HQ et al (2012) Expression of DLK1 Gene in the Bone Marrow Cells of Patients with Myelodysplastic Syndromes and Its Clinical Significance. Cancer Biol Med 9:188–191
Zhang W, Shao Z, Fu R et al (2013) Effect of DLK1 on tumorigenesis in CD34CD38 bone marrow cells in myelodysplastic syndromes. Oncol Lett 6:203–206
Zhao J, Ohsumi TK, Kung JT et al (2010) Genome-wide identification of polycomb-associated RNAs by RIP-seq. Mol Cell 40:939–953
Zhou Y, Zhang X, Klibanski A (2014) Genetic and epigenetic mutations of tumor suppressive genes in sporadic pituitary adenoma. Mol Cell Endocrinol 386:16–33
Zhou Y, Zhang X, Klibanski A (2012) MEG3 noncoding RNA: a tumor suppressor. J Mol Endocrinol 48:R45–R53
Acknowledgments
We would like to thank Nikolaos Benetatos MD for his helpful comments. We apologize to those authors whose work has not been cited.
Conflict of interest
None.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Benetatos, L., Vartholomatos, G. & Hatzimichael, E. DLK1-DIO3 imprinted cluster in induced pluripotency: landscape in the mist. Cell. Mol. Life Sci. 71, 4421–4430 (2014). https://doi.org/10.1007/s00018-014-1698-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00018-014-1698-9
Keywords
Profiles
- Leonidas Benetatos View author profile