Skip to main content
Forschungsinstitut fuer Augenheilkunde
INSTITUTE FOR OPHTHALMIC RESEARCH
FORSCHUNGSINSTITUT FÜR AUGENHEILKUNDE

Retinal degeneration and therapy development

Inherited forms of RD affect the light-sensing photoreceptors leading to an irreversible vision loss. Different forms of RD present with substantial clinical and genetic heterogeneity; nevertheless, common features of all forms are (1) degeneration of photoreceptors, subsequently leading to blindness, and (2) no available treatment. Taking a systems biology approach combining bioanalytic, proteogenomic and computational analytical strategies, we aim at in-depth understanding of overarching rod and cone cell death pathways affected in RD. Based on a holistic understanding of key systemic perturbations that cause disease, we are currently developing therapy for RD that is mutation independent.

In particular, our research group has provided a proof of concept that rebalancing defects in proteostasis and energy consumption can significantly slow down RD. Especially in photoreceptors (PR), the production of large quantities of visual pigment generates a huge demand for energy equivalents and protein folding capacity. Maintenance of protein and energy homeostasis comes to the limit, when a cell gets out of balance due to disease. Importantly, this happens independently of the disease-associated mutation. Similarly, our therapeutic principle is mutation independent.

Current Projects

  • Towards clinical translation of mutation-independent treatment of RD by inhibiting VCP: TargetVCP - Transformative Research Award, Fighting Blindness Canada (FBC) (2023 – 2025)
  • Proteostasis modulators as a mutation-independent treatment for retinal degeneration: Pro-Cure – Tistou & Charlotte Kerstan Stiftung (2023 – 2024)
  • Auswirkungen der VCP-Hemmung auf die Netzhautdegeneration – Maloch Stiftung (2022 – 2024)
  • Keeping protein homeostasis in cone photoreceptors: effect of VCP inhibition on primary and secondary cone degeneration. Pro Retina - Stiftung zur Verhütung von Blindheit (2021-2023)
  • Targeting Proteostasis in the RhoI256del Model of Retinitis Pigmentosa: Rho-Cure – Tistou & Charlotte Kerstan Stiftung (2022 – 2023)
  • Development of pharmacological treatment options to halt retinal degeneration caused by dominant rhodopsin mutations. Rho-Cure – Tistou & Charlotte Kerstan Stiftung (2018 – 2023)

Collaborations

  • Arto Urtti, Faculty of Health Sciences, School of Pharmacy, University of Eastern Finland, Kuopio, Finland.
  • Ho Jeong Kwon, Department of Biotechnology, Yonsei University, Seoul, Korea.
  • Michael Cheetham, Institute of Ophthalmology, Faculty of Brain Sciences, University College London, London, UK. 
  • Olivier Zelphati, OZ Biosciences SAS, Marseille, France.
  • Paolo Caliceti, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova - Italy
  • Raymond J. Deshaies, AMGEN, Inc. Thousand Oaks, California, US.
  • Ronald Roepman, Department of Human Genetics, Radboud University Medical Center Nijmegen, Nijmegen, The Netherlands.
  • Scott Harris, Cleave Therapeutics, Inc. San Francisco, California, US.
  • Stefano Salmaso, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova - Italy
  • Tsui-Fen Chou, Biology and Biological Engineering, Caltech - California Institute of Technology,  Pasadena, California, USA.
  • Uwe Wolfrum, Institut fuer Zoologie, Johannes-Gutenberg Universitaet Mainz, Mainz, Germany.

Selected Publications

  • Sen, M., O. Kutsyr, B. Cao, S. Bolz, B. Arango-Gonzalez, and M. Ueffing. "Pharmacological Inhibition of the Vcp/Proteasome Axis Rescues Photoreceptor Degeneration in Rho(P23h) Rat Retinal Explants." Biomolecules 11, no. 10 (2021).
  • Griciuc, A., L. Aron, M. J. Roux, R. Klein, A. Giangrande, and M. Ueffing. "Inactivation of Vcp/Ter94 Suppresses Retinal Pathology Caused by Misfolded Rhodopsin in Drosophila." PLoS Genet 6, no. 8 (2010).
  • Cao, Bowen, Merve Sen, Tina Beyer, Tobias Leonhard, Sally Williamson, Ana Cristina Almansa Garcia, Sylvia Bolz, Blanca Arango Gonzalez, and Marius Ueffing. "The Degradation of Mutant Rhodopsinile256del Follows the Vcp-Dependent Endoplasmic-Reticulum-Associated Protein Degradation pathway." Acta Ophthalmol 100, no. S267 (2022).
  • Arango-Gonzalez, Blanca, Merve Sen, Rosellina Guarascio, Kalliopi Ziaka, Eva M. del Amo, Kwan Hau, Hannah Poultney, Rowan Asfahani, Arto Urtti, Tsui-Fen Chou, Sylvia Bolz, Raymond J. Deshaies, Wadood Haq, Michael E. Cheetham, and Marius Ueffing. "Inhibition of Vcp Preserves Retinal Structure and Function in Autosomal Dominant Retinal Degeneration." bioRxiv (2020): 2020.11.17.384669.
  • Sen, M., M. Al-Amin, E. Kicková, A. Sadeghi, J. Puranen, A. Urtti, P. Caliceti, S. Salmaso, B. Arango-Gonzalez, and M. Ueffing. "Retinal Neuroprotection by Controlled Release of a Vcp Inhibitor from Self-Assembled Nanoparticles." J Control Release 339 (2021): 307-20.
  • Sen, M., M. Bassetto, F. Poulhes, O. Zelphati, M. Ueffing, and B. Arango-Gonzalez. "Efficient Ocular Delivery of Vcp Sirna Via Reverse Magnetofection in Rho P23h Rodent Retina Explants." Pharmaceutics 13, no. 2 (2021).
  • Almansa García, Ana Cristina, Bowen Cao, Merve Sen, Sylvia Bolz, Blanca Arango-Gonzalez, and Marius Ueffing. "Effect of Protein Homeostasis Modulation in Primary Cone Degeneration." Acta Ophthalmol 100, no. S267 (2022).
  • Griciuc, A., L. Aron, and M. Ueffing. "Er Stress in Retinal Degeneration: A Target for Rational Therapy?" Trends Mol Med 17, no. 8 (2011): 442-51.
  • Griciuc, A., M. J. Roux, J. Merl, A. Giangrande, S. M. Hauck, L. Aron, and M. Ueffing. "Proteomic Survey Reveals Altered Energetic Patterns and Metabolic Failure Prior to Retinal Degeneration." J Neurosci 34, no. 8 (2014): 2797-812.
  • Tolone, A., M. Sen, Y. Chen, M. Ueffing, B. Arango-Gonzalez, and F. Paquet-Durand. "Pathomechanisms of Inherited Retinal Degeneration and Perspectives for Neuroprotection." Cold Spring Harb Perspect Med (2022).
  • Al-Amin, M. D., F. Mastrotto, A. Subrizi, M. Sen, T. Turunen, B. Arango-Gonzalez, M. Ueffing, A. Malfanti, A. Urtti, S. Salmaso, and P. Caliceti. "Tailoring Surface Properties of Liposomes for Dexamethasone Intraocular Administration." J Control Release 354 (2023): 323-36.
  • Kickova, E., A. Sadeghi, J. Puranen, S. Tavakoli, M. Sen, V. P. Ranta, B. Arango-Gonzalez, S. Bolz, M. Ueffing, S. Salmaso, P. Caliceti, E. Toropainen, M. Ruponen, and A. Urtti. "Pharmacokinetics of Pullulan-Dexamethasone Conjugates in Retinal Drug Delivery." Pharmaceutics 14, no. 1 (2021).
  • Bassetto, M., M. Sen, F. Poulhes, B. Arango-Gonzalez, E. Bonvin, C. Sapet, M. Ueffing, and O. Zelphati. "New Method for Efficient Sirna Delivery in Retina Explants: Reverse Magnetofection." Bioconjug Chem 32, no. 6 (2021): 1078-93.