ZMB Member Nicole Dünker
ZMB Member
Nicole Dünker
Next ZMB-Member
Prof. Dr. Nicole Dünker
Institute of Anatomy II
University Hospital Essen
Hufelandstr. 55
45147 Essen
- +49 201 723 4299
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Oncology
Research Overview
We are interested in factors influencing the etiology and progression of retinoblastoma (RB), the most common primary intraocular tumor in childhood. Untreated RB will grow and extend beyond the eye and undergo metastatic spread, commonly into regional lymph nodes, bone and CNS. Treatment of RB ranges from enucleation of the affected eye to eye salvage strategies including focal therapy (laser, cryotherapy), brachytherapy and/or chemotherapy. Chemotherapy can be applied systemically, commonly using an intra-arterial and/or intravitreal VEC (vincristine, etoposide and carboplatin) injection of chemotherapeutics. Chemotherapeutic treatment of RB is, however, limited not only by drug-related side effects, but also by developing drug resistances. Therefore, developing strategies to improve RB therapies for instance by sensitizing RB cells towards chemotherapeutics is a major challenge. Recent studies by our group suggest that trefoil factor family (TFF) peptides might be potential new candidates for supplementary therapeutic options for retinoblastoma along with common chemotherapy. Part of our research focuses on the up- and downstream molecules in the TFF signaling pathway as possible points of attack for future RB treatment. Another aspect of retinoblastoma, we are intensively investigating, are the mechanisms underlying chemoresistance, one of the major obstacles in retinoblastoma treatment. Most recently, we make use of nanoparticle-mediated substance delivery as well as nanoparticle-mediated gene knockdown and plan to also implement AAVs (adeno-associated viruses) as an applicable RB treatment strategy.
The chick in ovo chorioallantoic membrane (CAM) culture system serves to verify our in vitro data gained in human retinoblastoma cell lines in a semi in vivo system and we established a small CAM facility open for all researchers, who would like to implement this assay (see our homepage).
Research topics and methods
Molecular mechanisms of chemoresistances in retinoblastoma cell lines
-> new therapeutic strategies for treatment of chemoresistant retinoblastomas
- in vitro analyses of chemoresistant retinoblastoma cell lines
- in vivo analyses (in ovo CAM-assays; orthotopic rat model)
Role of Trefoil Factor Family (TFF) peptides in retinoblastoma etiology and progression
- Expression of TFF peptides in the human retina, retinoblastoma cell lines and primary retinoblastoma tumors
- Effects of TFF peptides on retinoblastoma cell tumor formation and metastasis
- Significance of TFF peptides for migration and invasiveness of retinoblastoma cells (CAM assays)
Role of EMT (epithelial-mesenchymal transition) for retinoblastoma and chemoresistance development
- expresssion analyses of epithelial and mesenchymal markers
- overexpression and knockdown studies
Role of retinoic acid and BMP4 for apoptosis induction in retinoblastoma cells
- Involvement of specific receptors and underlying signaling mechanisms
- Expression studies (Real Time PCR / Western Blot)
- Functional studies (cell culture/ DAPI-cell counts / apoptosis-arrays)
Selected Publications
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Fatty acid conjugated EPI-X4 derivatives with increased activity and in vivo stabilityIn: Journal of Controlled Release Vol. 373 (2024) pp. 583 - 598Online Full Text: dx.doi.org/ (Open Access)
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Gastric Inhibitory Polypeptide Receptor (GIPR) Overexpression Reduces the Tumorigenic Potential of Retinoblastoma CellsIn: Cancers Vol. 16 (2024) Nr. 9, 1656Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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New retinoblastoma (RB) drug delivery approaches : anti-tumor effect of atrial natriuretic peptide (ANP)-conjugated hyaluronic-acid-coated gold nanoparticles for intraocular treatment of chemoresistant RBIn: Molecular Oncology Vol. 18 (2024) Nr. 4, pp. 832 - 849Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Role of Protein Tyrosine Phosphatase Receptor Type E (PTPRE) in Chemoresistant RetinoblastomaIn: International Journal of Molecular Sciences (IJMS) Vol. 25 (2024) Nr. 8, 4572Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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α-Ketoglutarate supplementation and NAD+ modulation enhance metabolic rewiring and radiosensitization in SLC25A1 inhibited cancer cellsIn: Cell Death Discovery Vol. 10 (2024) Nr. 1, 27Online Full Text: dx.doi.org/ (Open Access)
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Evaluation of the Effect of Photodynamic Therapy on CAM-Grown SarcomasIn: Bioengineering Vol. 10 (2023) Nr. 4, 464Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Novel Function of Cancer Stem Cell Marker ALDH1A3 in Glioblastoma : Pro-Angiogenesis through Paracrine PAI-1 and IL-8In: Cancers Vol. 15 (2023) Nr. 17, 4422Online Full Text: dx.doi.org/ (Open Access)
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Trefoil Family Factor Peptide 1 : A New Biomarker in Liquid Biopsies of Retinoblastoma under TherapyIn: Cancers Vol. 15 (2023) Nr. 19, 4828Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Tumor Suppressor Role of INPP4B in Chemoresistant RetinoblastomaIn: Journal of Oncology (2023) 2270097Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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5-ALA-mediated fluorescence of musculoskeletal tumors in a chick chorio-allantoic membrane model : Preclinical in vivo qualification analysis as a fluorescence-guided surgery agent in Orthopedic OncologyIn: Journal of Orthopaedic Surgery and Research Vol. 17 (2022) Nr. 1, 34Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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ADAM10 and ADAM17 : Novel Players in Retinoblastoma CarcinogenesisIn: International Journal of Molecular Sciences (IJMS) Vol. 23 (2022) Nr. 20, 12621Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Retinoblastoma Cell Growth 'In Vitro' and Tumor Formation 'In Ovo' : Influence of Different Culture ConditionsIn: Methods and Protocols Vol. 5 (2022) Nr. 2, 21Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Role of L1CAM in retinoblastoma tumorigenesis : identification of novel therapeutic targetsIn: Molecular Oncology Vol. 16 (2022) Nr. 4,Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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TFF1 in Aqueous Humor : A Potential New Biomarker for RetinoblastomaIn: Cancers Vol. 14 (2022) Nr. 3, 677Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Impact of RARα and miR-138 on retinoblastoma etoposide resistanceIn: Tumor Biology Vol. 43 (2021) Nr. 1, pp. 11 - 26Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Hyaluronic acid coating of gold nanoparticles for intraocular drug delivery : Evaluation of the surface properties and effect on their distributionIn: Experimental Eye Research Vol. 198 (2020) 108151Online Full Text: dx.doi.org/ (Open Access)
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Implementation of the chick chorioallantoic membrane (CAM) model in radiation biology and experimental radiation oncology researchIn: Cancers Vol. 11 (2019) Nr. 10, pp. 1499Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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p53, miR-34a and EMP1 : Newly Identified Targets of TFF3 Signaling in Y79 Retinoblastoma CellsIn: International Journal of Molecular Sciences (IJMS) Vol. 20 (2019) Nr. 17, pp. 4129Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Characterization of etoposide- and cisplatin-chemoresistant retinoblastoma cell linesIn: Oncology Reports Vol. 39 (2018) Nr. 1, pp. 160 - 172Online Full Text: dx.doi.org/ (Open Access)
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Trefoil factor family 1 expression correlates with clinical outcome in petients withr retinoblastomaIn: Retina Vol. 38 (2018) Nr. 12, pp. 2422 - 2428Online Full Text: dx.doi.org/
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Reduction of the tumorigenic potential of human retinoblastoma cell lines by TFF1 overexpression involves p53/caspase signaling and miR-18a regulationIn: International Journal of Cancer Vol. 141 (2017) Nr. 3, pp. 549 - 560Online Full Text: dx.doi.org/
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Forced Trefoil Factor Family Peptide 3 (TFF3) Expression Reduces Growth, Viability, and Tumorigenicity of Human Retinoblastoma Cell LinesIn: PLoS ONE Vol. 11 (2016) Nr. 9, pp. 0163025Online Full Text: dx.doi.org/ (Open Access)
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Additive effects of retinoic acid (RA) and bone morphogenetic protein 4 (BMP-4) apoptosis signaling in retinoblastoma cell linesIn: PLoS ONE Vol. 10 (2015) Nr. 7,Online Full Text: dx.doi.org/ (Open Access)
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Re-characterization of established human retinoblastoma cell linesIn: Histochemistry and Cell Biology Vol. 143 (2015) Nr. 3, pp. 325 - 338Online Full Text: dx.doi.org/
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Trefoil factor family peptides : Friends or foes?In: Biomolecular Concepts Vol. 6 (2015) Nr. 5-6, pp. 343 - 359Online Full Text: dx.doi.org/
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Epigenetic control of trefoil factor family (TFF) peptide expression in human retinoblastoma cell linesIn: Cellular Physiology and Biochemistry Vol. 34 (2014) Nr. 3, pp. 1001 - 1014Online Full Text: dx.doi.org/ (Open Access)
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High trefoil factor 1 (TFF1) expression in human retinoblastoma cells correlates with low growth kinetics, increased cyclin-dependent kinase (CDK) inhibitor levels and a selective down-regulation of CDK6In: Histochemistry and Cell Biology Vol. 139 (2013) Nr. 2, pp. 323 - 338Online Full Text: dx.doi.org/
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Loss at chromosome arm 16q in retinoblastoma : confirmation of the association with diffuse vitreous seeding and refinement of the recurrently deleted regionIn: Genes, Chromosomes and Cancer Vol. 50 (2011) Nr. 5, pp. 327 - 337Online Full Text: dx.doi.org/
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Trefoil factor family peptide 2 acts pro-proliferative and pro-apoptotic in the murine retina.In: Histochemistry and Cell Biology Vol. 135 (2011) Nr. 5, pp. 461 - 473Online Full Text: dx.doi.org/
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Bone morphogenetic protein 4 (BMP4) signaling in retinoblastoma cellsIn: International Journal of Biological Sciences Vol. 6 (2010) Nr. 7, pp. 700 - 715Online Full Text: dx.doi.org/ (Open Access)
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Chick ex ovo culture and ex ovo CAM assay : How it really worksIn: JoVE (2010) Nr. 33, pp. e1620Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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In vivo-like Organotypic Murine Retinal Wholemount CultureIn: JoVE (2010) Nr. 35, pp. e1634Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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The anemia of the newborn induces erythropoietin expression in the developing mouse retinaIn: American Journal of Physiology: Regulatory, Integrative and Comparative Physiology Vol. 299 (2010) Nr. 1, pp. R111 - R118Online Full Text: dx.doi.org/
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Recruitment and maintenance of tendon progenitors by TGFβ signaling are essential for tendon formationIn: Development / Company of Biologists Vol. 136 (2009) Nr. 8, pp. 1351 - 1361Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Transforming growth factor beta mediates apoptosis in the ganglion cell layer during all programmed cell death periods of the developing murine retinaIn: Neuroscience Research Vol. 56 (2006) Nr. 2, pp. 193 - 203Online Full Text: dx.doi.org/
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Transforming growth factor β is required for differentiation of mouse mesencephalic progenitors into dopaminergic neurons in vitro and in vivo : Ectopic induction in dorsal mesencephalonIn: Stem Cells Vol. 24 (2006) Nr. 9, pp. 2120 - 2129Online Full Text: dx.doi.org/ (Open Access)
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Transforming growth factor-β and bone morphogenetic proteins: Cooperative players in chick and murine programmed retinal cell deathIn: The Journal of Comparative Neurology Vol. 495 (2006) Nr. 3, pp. 263 - 278Online Full Text: dx.doi.org/
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Balance of pro-apoptotic transforming growth factor-β and anti-apoptotic insulin effects in the control of cell death in the postnatal mouse retinaIn: European Journal of Neuroscience Vol. 22 (2005) Nr. 1, pp. 28 - 38Online Full Text: dx.doi.org/
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Transforming growth factor-β (TGF-β) and programmed cell death in the vertebrate retinaIn: International Review of Cytology Vol. 245 (2005) pp. 17 - 43Online Full Text: dx.doi.org/
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Isoform-specific role of transforming growth factor-β2 in the regulation of proliferation and differentiation of murine adrenal chromaffin cells in vivoIn: Journal of Neuroscience Research Vol. 78 (2004) Nr. 4, pp. 493 - 498Online Full Text: dx.doi.org/
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Immunohistochemical evaluation of matrix molecules associated with wound healing following treatment with an enamel matrix protein derivative in humansIn: Clinical Oral Investigations Vol. 7 (2003) Nr. 3, pp. 167 - 174Online Full Text: dx.doi.org/
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Reduced programmed cell death in the retina and defects in lens and cornea of Tgfβ2 –/– Tgfβ3 –/– double-deficient miceIn: Cell and Tissue Research Vol. 313 (2003) Nr. 1, pp. 1 - 10Online Full Text: dx.doi.org/
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Transforming Growth Factor-βs Are Essential for the Development of Midbrain Dopaminergic NeuronsIn VitroandIn VivoIn: The Journal of Neuroscience Vol. 23 (2003) Nr. 12, pp. 5178 - 5186Online Full Text: dx.doi.org/ (Open Access)
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Transforming growth factor beta mediated programmed cell death in tissue regeneration of the murine intestinal mucosa.In: Annals of Anatomy Vol. 185 (2003) Nr. 4, pp. 299 - 300Online Full Text: dx.doi.org/
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Transforming growth factor-β and tumor necrosis factor-α cooperate to induce apoptosis in the oligodendroglial cell line OLI-neuIn: Journal of Neuroscience Research Vol. 73 (2003) Nr. 3, pp. 324 - 333Online Full Text: dx.doi.org/
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Immunohistochemical evaluation of matrix molecules associated with wound healing following regenerative periodontal treatment in monkeysIn: Clinical Oral Investigations Vol. 6 (2002) Nr. 3, pp. 175 - 182Online Full Text: dx.doi.org/
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TGF-β is required for programmed cell death in interdigital webs of the developing mouse limbIn: Mechanisms of Development Vol. 113 (2002) Nr. 2, pp. 111 - 120Online Full Text: dx.doi.org/ (Open Access)
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Tgfβ2⁻/⁻Tgfβ3⁻/⁻ double knockout mice display severe midline fusion defects and early embryonic lethalityIn: Anatomy and Embryology Vol. 206 (2002) Nr. 1-2, pp. 73 - 83Online Full Text: dx.doi.org/
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The role of transforming growth factor beta-2, beta-3 in mediating apoptosis in the murine intestinal mucosaIn: Gastroenterology Vol. 122 (2002) Nr. 5, pp. 1364 - 1375Online Full Text: dx.doi.org/
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Transforming growth factor-beta 2 heterozygous mutant mice exhibit Cowper's gland hyperplasia and cystic dilations of the gland ducts (Cowper's syringoceles)In: Journal of Anatomy Vol. 201 (2002) Nr. 2, pp. 173 - 183Online Full Text: dx.doi.org/ Online Full Text (Open Access)
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Transforming growth factor-β induced cell death in the developing chick retina is mediated via activation of c-jun N-terminal kinase and downregulation of the anti-apoptotic protein Bcl-XLIn: Neuroscience Letters Vol. 330 (2002) Nr. 3, pp. 239 - 242Online Full Text: dx.doi.org/
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TGF-beta modulates programmed cell death in the retina of the developing chick embryo.In: Development Vol. 128 (2001) Nr. 11, pp. 1933 - 1942
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Embryonic and larval development in the caecilian Ichthyophis kohtaoensis (Amphibia, gymnophiona) : a staging tableIn: Journal of morphology Vol. 243 (2000) Nr. 1, pp. 3 - 34Online Full Text: dx.doi.org/
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Reduction of endogenous transforming growth factors β prevents ontogenetic neuron deathIn: Nature Neuroscience Vol. 3 (2000) Nr. 11, pp. 1085 - 1090Online Full Text: dx.doi.org/
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Targeted mutations of transforming growth factor-β genes reveal important roles in mouse development and adult homeostasisIn: EJB: the FEBS journal Vol. 267 (2000) Nr. 24, pp. 6982 - 6988Online Full Text: dx.doi.org/
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Serotonergic neurons and processes in the adult and developing retina of Ichthyophis kohtaoensis (Amphibia; Gymnophiona)In: Anatomy and Embryology Vol. 199 (1999) Nr. 1, pp. 35 - 43Online Full Text: dx.doi.org/
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A double-label analysis demonstrating the partial coexistence of tyrosine hydroxylase and GABA in retinal neurons of Ichthyophis kohtaoensis (Amphibia; Gymnophiona)In: Cell and Tissue Research Vol. 294 (1998) Nr. 2, pp. 387 - 390Online Full Text: dx.doi.org/
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Colocalization of serotonin and GABA in retinal neurons of Ichthyophis kohtaoensis (amphibia; Gymnophiona)In: Anatomy and embryology Vol. 197 (1998) Nr. 1, pp. 69 - 75
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Development and organization of the retinal dopaminergic system of Ichthyophis kohtaoensis (Amphibia; Gymnophiona)In: Cell and Tissue Research Vol. 289 (1997) Nr. 2, pp. 265 - 274Online Full Text: dx.doi.org/