R&D Initiatives

We have several ongoing R&D projects at RG Discovery (RGD).

  • Project Nile aims at developing novel compounds for an epigenetic target in the treatment of cancer. This project is a collaboration between RGD, SARomics Biostructures (SBX) and a research group led by Professor Jonas Nilsson at Sahlgrenska Hospital (Gothenburg, Sweden). Candidate drug development activities are supported by a research grant from Vinnova (the Swedish innovation agency). In 2021 a company Zerapeutics AB was founded.
  • Project Ganges, a collaboration between SARomcs Biostructures and RGD, is built on the foundation of a successful fragment screen, where hits for this bromodomain-class target were identified using our exclusive WAC technology. Further validation led to X-ray co-crystal structures revealing a possibility for developing a PPI inhibitor-type molecule. The project is currently in the hit expansion phase and entering hit-to-lead.
  • A previous project has been spun out into a separate company, Apoglyx, where RGD is a co-owner. Apoglyx research is based on aquaporins, a group of structures in cell membranes discovered in 1991 by Peter Agre and awarded with the Nobel Prize in Chemistry 2003. Aquaporins have been recognized as potential drug targets and may have roles for development of autoimmune diseases, cancer, diabetes, malaria, inflammation and sepsis. The lead compound – RG100204, has shown promising effects against sepsis when evaluated in vivo.
  • The project Elbe, recently funded by Vinnova, has RG Discovery teaming up with the leading peptide API manufacturer PolyPeptide to evaluate the scope of developing a manufacturing process without using the toxic solvent DMF. Both companies have prior and valuable Green Chemistry experience. This project has potential to further accentuate Sweden at a global level as a natural arena for sustainable innovation, development and manufacturing of peptide-based therapies.
  • The objective in the joint project Sognefjorden between RGD and Cellmover AS is to deliver a broad checkpoint inhibitor for cancer therapy. One track aims for a cell-permeable nanobody with a broad specificity for the consensus motifandthe other to design and develop a cell-permeable peptide- or macrocycle-based drug molecule based on the nanobody paratope. This project has received funding from the Eurostars 3 programme with co-financing from the European Union’s research and innovation programme Horizon Europe.

Pipeline

Hit Identification Lead Identification Lead Optimisation Candidate Drug Clinical Phase Partner

SACRA

Ganges

– Bromodomain protein – Several

Nile

– Bromodomain protein – Oncology

APOGLYX

– Aquaporin – Acute Pancreatitis

Elbe

– Green chemistry – Sustainability

Sognefjorden

– Checkpoint inhibitor – Oncology

We currently have several ongoing internal drug discovery projects in our pipeline.

Science

RG Discovery (RGD) invests heavily in remaining at the forefront of research and innovation. Ninety-five percent of our staff currently work in lab- or other science-based positions. In addition to actively producing peer-reviewed research papers, we have contributed to several patents for both clients and internal RGD projects. A number of our scientists are appointed lecturers at Lund University and Lund Technical University and serve in advisory roles shaping the teaching curriculum in chemistry / biomedicine and chemical engineering programs respectively. RGD actively engages in collaboration with academia to address societal challenges, welcoming diploma workers to participate in projects from all of our scientific disciplines.

Besides drug and technology projects, RG Discovery is committed to contribute to green chemistry. Over the last years, a focus area has been peptide chemistry where we aim to replace toxic solvents, such as DMF, and other chemicals, e.g. piperidine, making the process greener. A recent success is the collaboration project with Polypeptide where the joint project team identified green alternative ways both for the release of a GLP1 peptide from the solid support used in the synthesis, and for removal of protecting groups from the peptide during the synthesis. Additionally, efforts have been made to recycle some of the green solvents used with good results, further contributing to a green sustainable synthesis process design.

Diploma Work

RGD is commited to helping young scientists. Below is list of diploma works and similar, that has been performed in our labs the last few years. Click on the project title to see abstracts and more at the Lund University Library website

Honia Rasul 2025 Lund University

Evaluation of Cell Permeability in Macrocyclic Peptides: An Exploratory Computational Chemistry Approach

Kristian Miladinovic 2025, Lund University

Chagas Disease : Synthetic Studies Towards Target Identification and Potential Treatment

Wilma Olsson 2025, Lund University

Synthetic studies towards Isoalantolactone : Navigating α-hydroxy radicals in sesquiterpenoid synthesis

Felicia Breimer 2024, Lund University

Synthetic studies towards new substances for treatment of Chaga’s disease

Elin Palm 2024, Lund University

Efficient synthesis of 4-Imidazolidinones from dipeptides

Sofia Dahlqvist 2023, Lund University

Metabolic stability and metabolite identification using hepatocytes

Frida Knutsson and Felix Forsberg 2023, Lund University

A Novel Approach for Fluorescent Peptide Labeling – Synthesis and Spectroscopic Studies of Model Compounds

Federico Balgera 2022, Lund University

Evaluation of gold-based compounds as Plasmodium falciparum aquaglyceroporin inhibitors

Andrea Ölander 2022, Lund University

Greening peptide chemistry by using NBP as solvent for SPPS

Albin Olsson 2021, Lund University

Rare Earth Triflate/Alanine Catalyzed Diels Alder and Michael Reactions in Water and an Alternative Pyrrole Synthesis

Kajsa Andréasson Dahlgren 2021, Lund University

Validation of a 3D culture model for toxicity studies in malignant and non-cancerous cells

Artur Sahakjan 2020, Lund University

Fragment screening using WAC towards new SMARCA4 inhibitors

Sofi Gummeson 2020, Lund University

Synthesis of a 13C-labeled tool compound for diagnostic applications

Tomas Laszlo Szakacs 2019, Lund University

Peptide fragment screening towards a new inhibitor of neutrophil elastase

Publications

Nonclinical Characterization of ACP-204, a Novel Selective 5-HT2A Receptor Inverse Agonist

Ethan S. Burstein, Roger Olsson, Niklas Sköld, Karl Erik Jansen, Marc Azar, Christine Sandiego, Khanum Ridler, Eugenii A. Rabiner, Gerry Rhodes, P. Markus Dey, Sanjeev Pathak
The Journal of Pharmacology and Experimental Therapeutics, 2026, 104932, ISSN 0022-3565

An Orally Available Halothiazole Glycomimetic as a Cancer-Targeting Dual Galectin-1 and Galectin-3 Inhibitor

Fredrik R. Zetterberg, Kristoffer Peterson, Ulf J. Nilsson, Carl Diehl, Maria Håkansson, Barbro Kahl-Knutson, Alison C. MacKinnon, Hanna Klein, Hakon Leffler, James A. Roper, Robert J. Slack, Henrik von Wachenfeldt, and Anders Pedersen
J. Med. Chem. 2026, XXXX, XXX, XXX-XXX

Discovery of novel SSRIs for a combination-treatment with pimavanserin

Annika Kers, Bálint Gabos, Sanjay Borhade, Emelie Andersson, Hanna Andersson, Ulf Wellmar, Mattias Jönsson, Sofi Gummeson, Klaus Dreisch, Nima Rajabi, Niklas Sköld, Ricardo J. Ferreira, Marc R. Azar, John A. Lowe III, Ethan S. Burstein
Bioorganic & Medicinal Chemistry Letters Volume 137, August 2026, 130662

From Cloudy to Clear: A Strategy to Resolve the Complex Structural Elucidation of Bicycle Drug Conjugate Zelenectide Pevedotin by NMR

Klara Jonasson, Andrew Feilden, Will Nesbit, Sven Wernersson
Bioconjugate Chem. 2026, 37, 2, 293–302

Discovery of MBL-AB01: a novel antibacterial xanthone antibiotic with high activity against methicillin-resistant Staphylococcus aureus

Degnes KF, Nordborg A, Nguyen G, Nærdal GK, Heggeset TMB, Molesworth P, Hakvåg S, Aune R, Nakstad VT, Evenäs J, Jonasson K, Ellingsen TE, Wentzel A, Klinkenberg G, Sletta H. 0.
Applied and Environmental Microbiology Vol. 92, No. 1 (2025)

Discovery and Development of Laquinimod: An Immunomodulator for Treatment of Multiple Sclerosis

Johan Wennerberg
Complete Accounts of Integrated Drug Discovery and Development: Recent Examples from the Pharmaceutical Industry Volume 5 Chapter 8pp 311-332, ACS Symposium Series Vol. 1505.

A Sustainable Approach to ε-Lys Branched GLP-1 Analogs: Integrating Green SPPS, Metal-free Alloc Removal, Waste Minimization and TFA/PFAS-free Resin Cleavage

Jan Pawlas, Johan Billing, Behabitu Tebikachew, Larisa Wahlström, Linda M. Haugaard-Kedström
Org. Process Res. Dev. 2025, 29, 11, 2989–2997

Synthesis and In Vitro Profiling of Psilocin Derivatives: Improved Stability and Synthetic Properties.

Eklund, J., Bremberg, U., Larsson, J., Torkelsson, E., Wennerberg, J., Zandelin, S. & Odell, L.R.
J. Med. Chem. 2025, 68, 7, 7153–7165.

Evaluation of Au(III) complexes as Plasmodium falciparum aquaglyceroporin (PfAQP) inhibitors by in silico and in vitro methods

Balgera, F., Tijani, M. K., Wennerberg, J., Persson, K. E. M., Nordlander, E., & Ferreira, R. J.
Journal of Biological Inorganic Chemistry 2024, 29, 821–836.

Structural basis of CDNF interaction with the UPR regulator GRP78

Melissa A. Graewert, M. A.; Volkova, M.; Jonasson, K.; Määttä, J. A. E.; Gräwert, T.; Mamidi, S.; Kulesskaya, N.; Evenäs, J.; Johnsson, R. J.; Svergun, D.; Bhattacharjee, A.; Huttunen, H. J.
Nature communications, 2024, 15, 8175.

Galectin-8N-Selective 4-Halophenylphthalazinone-Galactals Double π-Stack in a Unique Pocket

van Klaveren, S. ; Hassan, M.; Håkansson, M.; Johnsson, R. E.; Larsson, J.; Jakopin, Ž.; Anderluh, M.; Leffler, H. Tomašič, T. Nilsson, U. J.
Med. Chem. Lett. 2024, 15, 1319-1324

Discovery of the Selective and Orally Available Galectin-1 Inhibitor GB1908 as a Potential Treatment for Lung Cancer

Zetterberg FR, Peterson K, Nilsson UJ, et al. Discovery of the Selective and Orally Available Galectin-1 Inhibitor GB1908 as a Potential Treatment for Lung Cancer.
J. Med. Chem. 2024, 67, 11, 9374–9388

N-Butylpyrrolidinone is an equally good solvent as N,N-dimethylformamide for microwave assisted solid phase peptide synthesis

Öhlander A, Lüdtke C, Sahakjan A, Johnsson RE. N-Butylpyrrolidinone is an equally good solvent as N,N-dimethylformamide for microwave assisted solid phase peptide synthesis. J Pept Sci. Published online May 8, 2024. doi:10.1002/psc.3612

A practical and environmentally friendly protocol forsynthesis of α-deuterated carboxylic acids

Wennerberg J, Dreisch K. A practical and environmentally friendly protocol for synthesis of α-deuterated carboxylic acids. J Labelled Comp Radiopharm. 2023;66(4-6):138-144. doi:10.1002/jlcr.4021

RG100204, A Novel Aquaporin-9 Inhibitor, Reduces Septic Cardiomyopathy and Multiple Organ Failure in Murine Sepsis

Mohammad S, O'Riordan CE, Verra C, et al. RG100204, A Novel Aquaporin-9 Inhibitor, Reduces Septic Cardiomyopathy and Multiple Organ Failure in Murine Sepsis. Front Immunol. 2022;13:900906. Published 2022 Jun 14. doi:10.3389/fimmu.2022.900906

Sialic Acid Derivatives Inhibit SiaT Transporters and Delay Bacterial Growth

Bozzola T, Scalise M, Larsson CU, et al. Sialic Acid Derivatives Inhibit SiaT Transporters and Delay Bacterial Growth. ACS Chem Biol. 2022;17(7):1890-1900. doi:10.1021/acschembio.2c00321

Characterization of the Aquaporin-9 Inhibitor RG100204 In Vitro and in db/db Mice

Florio M, Engfors A, Gena P, et al. Characterization of the Aquaporin-9 Inhibitor RG100204 In Vitro and in db/db Mice. Cells. 2022;11(19):3118. Published 2022 Oct 4. doi:10.3390/cells11193118

Discovery and Optimization of the First Highly Effective and Orally Available Galectin-3 Inhibitors for Treatment of Fibrotic Disease.

Zetterberg FR, MacKinnon A, Brimert T, et al. Discovery and Optimization of the First Highly Effective and Orally Available Galectin-3 Inhibitors for Treatment of Fibrotic Disease. J Med Chem. 2022;65(19):12626-12638. doi:10.1021/acs.jmedchem.2c00660

Molecular Dynamics Studies of Therapeutic Liquid Mixtures and Their Binding to Mycobacteria

Monteiro H, Santos F, Paiva A, Duarte ARC, Ferreira RJ. Molecular Dynamics Studies of Therapeutic Liquid Mixtures and Their Binding to Mycobacteria. Front Pharmacol. 2021;12:626735. Published 2021 Apr 20. doi:10.3389/fphar.2021.626735

Evolution of Nitrogen-Based Alkylating Anticancer Agents

Lehmann F, Wennerberg J. Evolution of Nitrogen-Based Alkylating Anticancer Agents. Processes. 2021; 9(2):377. https://doi.org/10.3390/pr9020377

An Aldehyde Responsive, Cleavable Linker for Glucose Responsive Insulins

Mannerstedt K, Mishra NK, Engholm E, et al. An Aldehyde Responsive, Cleavable Linker for Glucose Responsive Insulins. Chemistry. 2021;27(9):3166-3176. doi:10.1002/chem.202004878

Melflufen: A Journey from Discovery to Multi-Kilogram Production

Lehmann F, Wennerberg J. Melflufen: A Journey from Discovery to Multi-Kilogram Production. ACS Symposium Series. Published online January 2020:157-177. doi:https://doi.org/10.1021/bk-2020-1369.ch005

NMR Study of the Secondary Structure and Biopharmaceutical Formulation of an Active Branched Antimicrobial Peptide

Castiglia F, Zevolini F, Riolo G, et al. NMR Study of the Secondary Structure and Biopharmaceutical Formulation of an Active Branched Antimicrobial Peptide. Molecules. 2019;24(23):4290. Published 2019 Nov 25. doi:10.3390/molecules24234290

Monosaccharide Derivatives with Low Nanomolecular Lectin Affinity and High Selectivity Based on Combined Fluorine-Amide, Phenyl-Arginine, Sulfur-π, and Halogen Bond Interactions

Zetterberg FR, Peterson K, Johnsson RE, et al. Monosaccharide Derivatives with Low-Nanomolar Lectin Affinity and High Selectivity Based on Combined Fluorine-Amide, Phenyl-Arginine, Sulfur-π, and Halogen Bond Interactions. ChemMedChem. 2018;13(2):133-137. doi:10.1002/cmdc.201700744

Structural Insights into the Calcium-Mediated Allosteric Transition in the C-Terminal Domain of Calmodulin from Nuclear Magnetic Resonance Measurement

Kukic P, Lundström P, Camilloni C, Evenäs J, Akke M, Vendruscolo M. Structural Insights into the Calcium-Mediated Allosteric Transition in the C-Terminal Domain of Calmodulin from Nuclear Magnetic Resonance Measurements. Biochemistry. 2016;55(1):19-28. doi:10.1021/acs.biochem.5b00961

Identification of indole inhibitors of human hematopoietic prostaglandin D2 synthase (hH-PGDS)

Edfeldt F, Evenäs J, Lepistö M, et al. Identification of indole inhibitors of human hematopoietic prostaglandin D2 synthase (hH-PGDS). Bioorg Med Chem Lett. 2015;25(12):2496-2500. doi:10.1016/j.bmcl.2015.04.065

HTS followed by NMR based counterscreening. Discovery and optimization of pyrimidones as reversible and competitive inhibitors of xanthine oxidase

Evenäs J, Edfeldt F, Lepistö M, et al. HTS followed by NMR based counterscreening. Discovery and optimization of pyrimidones as reversible and competitive inhibitors of xanthine oxidase. Bioorg Med Chem Lett. 2014;24(5):1315-1321. doi:10.1016/j.bmcl.2014.01.050

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