1
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Luo J, Gao Q, Tan K, Zhang S, Shi W, Luo L, Li Z, Khedr GE, Chen J, Xu Y, Luo M, Xing Q, Geng J. Lysosome Targeting Chimaeras for Glut1-Facilitated Targeted Protein Degradation. J Am Chem Soc 2024; 146:17728-17737. [PMID: 38899504 DOI: 10.1021/jacs.4c02463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Targeted protein degradation technology holds great potential in biomedicine, particularly in treating tumors and other protein-related diseases. Research on intracellular protein degradation using molecular glues and PROTAC technology is leading, while research on the degradation of membrane proteins and extracellular proteins through the lysosomal pathway is still in the preclinical stage. The scarcity of useful targets is an immense limitation to technological advancement, making it essential to explore novel, potentially effective approaches for targeted lysosomal degradation. Here, we employed the glucose transporter Glut1 as an innovative lysosome-targeting receptor and devised the Glut1-Facilitated Lysosomal Degradation (GFLD) strategy. We synthesized potential Glut1 ligands via reversible addition-fragmentation chain transfer (RAFT) polymerization and acquired antibody-glycooligomer conjugates through bioorthogonal reactions as lysosome-targeting protein degradation molecules, utilized in the management of PD-L1 high-expressing triple-negative breast cancer. The glucose transporter Glut1 as a lysosome-targeting receptor exhibits potential for the advancement of a broader array of medications in the future.
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Affiliation(s)
- Jinyan Luo
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Quan Gao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Kui Tan
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Shiling Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Weiwei Shi
- Department of Chemical Biology, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
| | - Lei Luo
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Zhiying Li
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Ghada E Khedr
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
| | - Jie Chen
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Youwei Xu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Ming Luo
- Polariton Life, Suzhou 215004, Jiangsu, China
| | - Qi Xing
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Jin Geng
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
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2
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Yang H, Zhang X, Xu L, Zhou Y, Ma R, Chen H, Zhao S, Baatar M, Chen L, Deng X, Gu H, Wang X. Palbociclib-derived multifunctional molecules for lysosomal targeting and diagnostic-therapeutic integration. Future Med Chem 2024; 16:1287-1298. [PMID: 39109433 PMCID: PMC11318731 DOI: 10.1080/17568919.2024.2347072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 04/18/2024] [Indexed: 08/15/2024] Open
Abstract
Aim: Lysosomal pH changes are associated with drug resistance, cell growth and invasion of tumors, but effective and specific real-time monitoring of lysosomal pH compounds for cancer therapy is lacking. Materials & methods: Here, based on the covalent linkage of the anticancer drug palbociclib and fluorescent dye fluorescein isothiocyanate (FITC), we designed and developed a novel palbociclib-derived multifunctional molecule (Pal-FITC) for lysosomal targeting and diagnostic therapeutic integration. Results & discussion: Pal-FITC fluoresces is 20-fold stronger than that of FITC and shows a linear response in the pH range of 4.0-8.2 (R2 = 0.9901). Pal-FITC blocks cells in G1 phase via Cyclin D-CDK4/6-Rb. Conclusion: Our study provides new strategies for tumor-targeted imaging and personalized therapy.
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Affiliation(s)
- Haili Yang
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
| | - Xiaoyang Zhang
- Central Laboratory, Nanjing Integrated Traditional Chinese & Western Medicine Hospital Affiliated with Nanjing University of Chinese Medicine, Nanjing, 210014P. R. China
| | - Letian Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
| | - Yuting Zhou
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
| | - Rui Ma
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
| | - Hao Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
| | - Siqin Zhao
- College of Chemistry & Environmental Science, Inner Mongolia Normal University, Hohhot, 010022P. R. China
| | - Munkhtsetseg Baatar
- Chemistry Department, Ulaanbaatar State University, Bayanzurkh district, Ulaanbaatar, Mongolia
| | - Lvyi Chen
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074P. R. China
| | - Xukun Deng
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074P. R. China
| | - Hongwei Gu
- Central Laboratory, Nanjing Integrated Traditional Chinese & Western Medicine Hospital Affiliated with Nanjing University of Chinese Medicine, Nanjing, 210014P. R. China
| | - Xiaoming Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, School of Life Sciences, Nanjing University, Nanjing, 210023P. R. China
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3
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Howell RA, Wang S, Khambete M, McDonald DM, Spiegel DA. Bifunctional Molecules That Induce Both Targeted Degradation and Transcytosis of Extracellular Proteins in Brain Cells. J Am Chem Soc 2024. [PMID: 38855935 DOI: 10.1021/jacs.3c13320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Targeted protein degradation (TPD) has emerged as an effective therapeutic strategy for a wide range of diseases; however, the blood-brain barrier (BBB) limits access of degraders into the central nervous system (CNS). Here, we present a new class of bifunctional small molecules, called TransMoDEs (Transcytosis-inducing molecular degraders of extracellular proteins), capable of both (1) removal of target protein via lysosomal proteolysis and (2) transcytosis of protein targets across brain endothelial cells. TransMoDEs are derived from Angiopep-2, a peptide motif previously employed as a covalent tag to facilitate receptor-mediated transcytosis across the BBB. We demonstrate that TransMoDEs containing either a biotin or chloroalkane ligand can trigger endocytosis of streptavidin or HaloTag protein, respectively. Interestingly, although low-density lipoprotein receptor-related protein 1 (LRP1) has been reported as the primary receptor for Angiopep-2, TransMoDE-mediated target uptake does not rely exclusively on this pathway. Furthermore, TransMoDE-mediated endocytosis of streptavidin in a bEnd.3 BBB model occurs in a clathrin-mediated mechanism and results in both lysosomal localization and transcytosis of the target protein. This study demonstrates that TransMoDEs can recruit, transcytose, and degrade proteins of interest in cells relevant to the CNS, supporting their further development for the removal of pathogenic neuroproteins.
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Affiliation(s)
- Rebecca A Howell
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Shikun Wang
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Mihir Khambete
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - David M McDonald
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - David A Spiegel
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
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4
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Abadie V, Han AS, Jabri B, Sollid LM. New Insights on Genes, Gluten, and Immunopathogenesis of Celiac Disease. Gastroenterology 2024; 167:4-22. [PMID: 38670280 PMCID: PMC11283582 DOI: 10.1053/j.gastro.2024.03.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/10/2024] [Accepted: 03/11/2024] [Indexed: 04/28/2024]
Abstract
Celiac disease (CeD) is a gluten-induced enteropathy that develops in genetically susceptible individuals upon consumption of cereal gluten proteins. It is a unique and complex immune disorder to study as the driving antigen is known and the tissue targeted by the immune reaction can be interrogated. This review integrates findings gained from genetic, biochemical, and immunologic studies, which together have revealed mechanisms of gluten peptide modification and HLA binding, thereby enabling a maladapted anti-gluten immune response. Observations in human samples combined with experimental mouse models have revealed that the gluten-induced immune response involves CD4+ T cells, cytotoxic CD8+ T cells, and B cells; their cross-talks are critical for the tissue-damaging response. The emergence of high-throughput technologies is increasing our understanding of the phenotype, location, and presumably function of the gluten-specific cells, which are all required to identify novel therapeutic targets and strategies for CeD.
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Affiliation(s)
- Valérie Abadie
- Department of Medicine, University of Chicago, Chicago, Illinois; Section of Gastroenterology, Nutrition and Hepatology, University of Chicago, Chicago, Illinois; Committee on Immunology, University of Chicago, Chicago, Illinois.
| | - Arnold S Han
- Columbia Center for Translational Immunology, Columbia University, New York, New York; Department of Microbiology and Immunology, Columbia University, New York, New York; Department of Medicine, Digestive and Liver Diseases, Columbia University, New York, New York
| | - Bana Jabri
- Department of Medicine, University of Chicago, Chicago, Illinois; Section of Gastroenterology, Nutrition and Hepatology, University of Chicago, Chicago, Illinois; Committee on Immunology, University of Chicago, Chicago, Illinois; Department of Pathology, University of Chicago, Chicago, Illinois; Department of Pediatrics, University of Chicago, Chicago, Illinois
| | - Ludvig M Sollid
- Norwegian Coeliac Disease Research Centre, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Immunology, Oslo University Hospital-Rikshospitalet, Oslo, Norway
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5
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Yang JL, Yamada-Hunter SA, Labanieh L, Sotillo E, Cheah JS, Roberts DS, Mackall CL, Bertozzi CR, Ting AY. Directed evolution of genetically encoded LYTACs for cell-mediated delivery. Proc Natl Acad Sci U S A 2024; 121:e2320053121. [PMID: 38513100 PMCID: PMC10990137 DOI: 10.1073/pnas.2320053121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 02/20/2024] [Indexed: 03/23/2024] Open
Abstract
Lysosome-targeting chimeras (LYTACs) are a promising therapeutic modality to drive the degradation of extracellular proteins. However, early versions of LYTAC contain synthetic glycopeptides that cannot be genetically encoded. Here, we present our designs for a fully genetically encodable LYTAC (GELYTAC), making our tool compatible with integration into therapeutic cells for targeted delivery at diseased sites. To achieve this, we replaced the glycopeptide portion of LYTACs with the protein insulin-like growth factor 2 (IGF2). After showing initial efficacy with wild-type IGF2, we increased the potency of GELYTAC using directed evolution. Subsequently, we demonstrated that our engineered GELYTAC construct not only secretes from HEK293T cells but also from human primary T-cells to drive the uptake of various targets into receiver cells. Immune cells engineered to secrete GELYTAC thus represent a promising avenue for spatially selective targeted protein degradation.
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Affiliation(s)
- Jonathan Lee Yang
- Department of Chemistry, Stanford University, Stanford, CA94305
- Sarafan ChEM-H, Stanford University, Stanford, CA94305
| | - Sean A. Yamada-Hunter
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA94305
| | - Louai Labanieh
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Parker Institute for Cancer Immunotherapy, San Francisco, CA94305
| | - Elena Sotillo
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
| | - Joleen S. Cheah
- Department of Biology, Stanford University, Stanford, CA94305
| | - David S. Roberts
- Department of Chemistry, Stanford University, Stanford, CA94305
- Sarafan ChEM-H, Stanford University, Stanford, CA94305
| | - Crystal L. Mackall
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA94305
- Parker Institute for Cancer Immunotherapy, San Francisco, CA94305
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA94305
- Department of Medicine, Stanford University School of Medicine, Stanford, CA94305
| | - Carolyn R. Bertozzi
- Department of Chemistry, Stanford University, Stanford, CA94305
- Sarafan ChEM-H, Stanford University, Stanford, CA94305
- HHMI, Stanford University, Stanford, CA94305
| | - Alice Y. Ting
- Department of Chemistry, Stanford University, Stanford, CA94305
- Sarafan ChEM-H, Stanford University, Stanford, CA94305
- Department of Biology, Stanford University, Stanford, CA94305
- Department of Genetics, Stanford University, Stanford, CA94305
- Chan Zuckerberg Biohub-San Francisco, San Francisco, CA94158
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6
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Zhu C, Wang W, Wang Y, Zhang W, Zhang Y, Li J. Targeted Extracellular Protein Degradation by Dendronized DNA Chimeras. ACS Chem Biol 2024; 19:654-659. [PMID: 38331720 DOI: 10.1021/acschembio.3c00645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Extracellular soluble proteins are key agents in the development of various diseases. However, strategies to remove therapeutically relevant extracellular targets are still scarce. Here, we establish dendronized DNA chimera (DENTAC) as an efficient approach for targeted degradation of the extracellular protein of interest (ePOI). DENTAC consists of a DNA dendron against cell-surface scavenger receptors (SRs), a protein ligand, and a connecting linker, which harnesses SRs as a lysosome-trafficking receptor to mediate the lysosomal degradation of the ePOI. We interrogate and optimize structure-activity relationships of DENTAC. Using neutravidin as a model ePOI, we show that both branch number and DNA length in the DNA dendron are important determinants for efficient lysosomal delivery and degradation of the protein. We demonstrate three branches and 10 nucleotide-length polythymidine as the optimal DNA dendron components to construct DENTAC. We further exemplify the anticancer application of DENTAC by targeting matrix metalloproteinase-9 (MMP-9), where we find linker property as another factor important for DENTAC performance. We reveal that MMP-9-targeting DENTAC effectively restrain cancer cell proliferation, migration, and invasion. This study thus provides a potent strategy to delete extracellular proteins that are commonly difficult to target.
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Affiliation(s)
- Chenghong Zhu
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Weishan Wang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Yan Wang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Weijie Zhang
- Division of Breast Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Jinbo Li
- State Key Laboratory of Analytical Chemistry for Life Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
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7
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Rhee K, Zhou X. Two in one: the emerging concept of bifunctional antibodies. Curr Opin Biotechnol 2024; 85:103050. [PMID: 38142645 PMCID: PMC10922881 DOI: 10.1016/j.copbio.2023.103050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 11/16/2023] [Accepted: 11/26/2023] [Indexed: 12/26/2023]
Abstract
Therapeutic antibodies have become indispensable for treating a wide range of diseases, and their significance in drug discovery has expanded considerably over the past few decades. Bifunctional antibodies are now emerging as a promising new drug modality to address previously unmet needs in antibody therapeutics. Distinct from traditional antibodies that operate through an 'occupancy-based' inhibition mechanism, these innovative molecules recruit the protein of interest to a 'biological effector,' initiating specific downstream consequences such as targeted protein degradation or posttranslational modifications. In this review, we emphasize the potential of bifunctional antibodies to tackle diverse biomedical challenges.
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Affiliation(s)
- Kaitlin Rhee
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Xin Zhou
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.
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8
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Yang JL, Yamada-Hunter SA, Labanieh L, Sotillo E, Cheah JS, Roberts DS, Mackall CL, Ting AY, Bertozzi CR. Directed Evolution of Genetically Encoded LYTACs for Cell-Mediated Delivery. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.14.567117. [PMID: 38014030 PMCID: PMC10680704 DOI: 10.1101/2023.11.14.567117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Lysosome-targeting chimeras (LYTACs) are a promising therapeutic modality to drive the degradation of extracellular proteins. However, early versions of LYTAC contain synthetic glycopeptides that cannot be genetically encoded. Here we present our designs for a fully genetically encodable LYTAC (GELYTAC), making our tool compatible with integration into therapeutic cells for targeted delivery at diseased sites. To achieve this, we replaced the glycopeptide portion of LYTACs with the protein insulin like growth factor 2 (IGF2). After showing initial efficacy with wild type IGF2, we increased the potency of GELYTAC using directed evolution. Subsequently, we demonstrated that our engineered GELYTAC construct not only secretes from HEK293T cells but also from human primary T-cells to drive the uptake of various targets into receiver cells. Immune cells engineered to secrete GELYTAC thus represent a promising avenue for spatially-selective targeted protein degradation.
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Affiliation(s)
- Jonathan Lee Yang
- Department of Chemistry and Sarafan ChEM-H, Stanford University, Stanford, CA, USA
| | - Sean A. Yamada-Hunter
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Louai Labanieh
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Elena Sotillo
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Joleen S. Cheah
- Departments of Biology, and Genetics Stanford University, Stanford, CA 94305, USA
| | - David S. Roberts
- Department of Chemistry and Sarafan ChEM-H, Stanford University, Stanford, CA, USA
| | - Crystal L. Mackall
- Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Medicine, Stanford University School of Medicine
- Parker Institute for Cancer Immunotherapy, San Francisco, CA 94305, USA
| | - Alice Y. Ting
- Department of Chemistry and Sarafan ChEM-H, Stanford University, Stanford, CA, USA
- Departments of Biology, and Genetics Stanford University, Stanford, CA 94305, USA
- Chan Zuckerberg Biohub-San Francisco, San Francisco, CA 94158, USA
| | - Carolyn R. Bertozzi
- Department of Chemistry and Sarafan ChEM-H, Stanford University, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford, CA, USA
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9
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Mikitiuk M, Barczyński J, Bielski P, Arciniega M, Tyrcha U, Hec A, Lipińska AD, Rychłowski M, Holak TA, Sitar T. IGF2 Peptide-Based LYTACs for Targeted Degradation of Extracellular and Transmembrane Proteins. Molecules 2023; 28:7519. [PMID: 38005242 PMCID: PMC10673611 DOI: 10.3390/molecules28227519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Lysosome-targeting chimeras (LYTACs) have recently been developed to facilitate the lysosomal degradation of specific extracellular and transmembrane molecular targets. However, the LYTAC particles described to date are based on glycopeptide conjugates, which are difficult to prepare and produce on a large scale. Here, we report on the development of pure protein LYTACs based on the non-glycosylated IGF2 peptides, which can be readily produced in virtually any facility capable of monoclonal antibody production. These chimeras utilize the IGF2R/CI-M6PR pathway for lysosomal shuttling and, in our illustrative example, target programmed death ligand 1 (PD-L1), eliciting physiological effects analogous to immune checkpoint blockade. Results from in vitro assays significantly exceed the effects of anti-PD-L1 antibodies alone.
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Affiliation(s)
- Michał Mikitiuk
- Recepton Sp. z o.o., Trzy Lipy 3, 80-172 Gdańsk, Poland
- Department of Photobiology and Molecular Diagnostics, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdansk, Abrahama 58, 80-307 Gdańsk, Poland
| | - Jan Barczyński
- Recepton Sp. z o.o., Trzy Lipy 3, 80-172 Gdańsk, Poland
- Department of Photobiology and Molecular Diagnostics, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdansk, Abrahama 58, 80-307 Gdańsk, Poland
| | | | | | | | | | - Andrea D. Lipińska
- Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, 80-307 Gdańsk, Poland
| | - Michał Rychłowski
- Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, 80-307 Gdańsk, Poland
| | - Tad A. Holak
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland;
| | - Tomasz Sitar
- Recepton Sp. z o.o., Trzy Lipy 3, 80-172 Gdańsk, Poland
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