1
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van Schuijlenburg R, Azargoshasb S, de Korne CM, Sijtsma JC, Bezemer S, van der Ham AJ, Baalbergen E, Geurten F, de Bes-Roeleveld LM, Chevalley-Maurel SC, van Oosterom MN, van Leeuwen FWB, Franke-Fayard B, Roestenberg M. Ageing of Plasmodium falciparum malaria sporozoites alters their motility, infectivity and reduces immune activation in vitro. Malar J 2024; 23:111. [PMID: 38641838 PMCID: PMC11027264 DOI: 10.1186/s12936-024-04946-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/12/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Sporozoites (SPZ), the infective form of Plasmodium falciparum malaria, can be inoculated into the human host skin by Anopheline mosquitoes. These SPZ migrate at approximately 1 µm/s to find a blood vessel and travel to the liver where they infect hepatocytes and multiply. In the skin they are still low in number (50-100 SPZ) and vulnerable to immune attack by antibodies and skin macrophages. This is why whole SPZ and SPZ proteins are used as the basis for most malaria vaccines currently deployed and undergoing late clinical testing. Mosquitoes typically inoculate SPZ into a human host between 14 and 25 days after their previous infective blood meal. However, it is unknown whether residing time within the mosquito affects SPZ condition, infectivity or immunogenicity. This study aimed to unravel how the age of P. falciparum SPZ in salivary glands (14, 17, or 20 days post blood meal) affects their infectivity and the ensuing immune responses. METHODS SPZ numbers, viability by live/dead staining, motility using dedicated sporozoite motility orienting and organizing tool software (SMOOT), and infectivity of HC-04.j7 liver cells at 14, 17 and 20 days after mosquito feeding have been investigated. In vitro co-culture assays with SPZ stimulated monocyte-derived macrophages (MoMɸ) and CD8+ T-cells, analysed by flow cytometry, were used to investigate immune responses. RESULTS SPZ age did not result in different SPZ numbers or viability. However, a markedly different motility pattern, whereby motility decreased from 89% at day 14 to 80% at day 17 and 71% at day 20 was observed (p ≤ 0.0001). Similarly, infectivity of day 20 SPZ dropped to ~ 50% compared with day 14 SPZ (p = 0.004). MoMɸ were better able to take up day 14 SPZ than day 20 SPZ (from 7.6% to 4.1%, p = 0.03) and displayed an increased expression of pro-inflammatory CD80, IL-6 (p = 0.005), regulatory markers PDL1 (p = 0.02), IL-10 (p = 0.009) and cytokines upon phagocytosis of younger SPZ. Interestingly, co-culture of these cells with CD8+ T-cells revealed a decreased expression of activation marker CD137 and cytokine IFNγ compared to their day 20 counterparts. These findings suggest that older (day 17-20) P. falciparum SPZ are less infectious and have decreased immune regulatory potential. CONCLUSION Overall, this data is a first step in enhancing the understanding of how mosquito residing time affects P. falciparum SPZ and could impact the understanding of the P. falciparum infectious reservoir and the potency of whole SPZ vaccines.
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Affiliation(s)
- Roos van Schuijlenburg
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Samaneh Azargoshasb
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Clarize M de Korne
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Jeroen C Sijtsma
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Sascha Bezemer
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Alwin J van der Ham
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Els Baalbergen
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Fiona Geurten
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Laura M de Bes-Roeleveld
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Severine C Chevalley-Maurel
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Matthias N van Oosterom
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Fijs W B van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Blandine Franke-Fayard
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands
| | - Meta Roestenberg
- Leiden University Center for Infectious Diseases (LUCID), Leiden University Medical Center, Leiden, Netherlands.
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2
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Zawistowska-Deniziak A, Lambooij JM, Kalinowska A, Patente TA, Łapiński M, van der Zande HJP, Basałaj K, de Korne CM, Chayé MAM, Gasan TA, Norbury LJ, Giera M, Zaldumbide A, Smits HH, Guigas B. Fasciola hepatica Fatty Acid Binding Protein 1 Modulates T cell Polarization by Promoting Dendritic Cell Thrombospondin-1 Secretion Without Affecting Metabolic Homeostasis in Obese Mice. Front Immunol 2022; 13:884663. [PMID: 35720355 PMCID: PMC9204345 DOI: 10.3389/fimmu.2022.884663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/19/2022] [Indexed: 11/24/2022] Open
Abstract
Background The parasitic trematode Fasciola hepatica evades host immune defenses through secretion of various immunomodulatory molecules. Fatty Acid Binding Proteins (fhFABPs) are among the main excreted/secreted proteins and have been shown to display anti-inflammatory properties. However, little is currently known regarding their impact on dendritic cells (DCs) and their subsequent capacity to prime specific CD4+ T cell subsets. Methodology/Principal Findings The immunomodulatory effects of both native F. hepatica extracts and recombinant fhFABPs were assessed on monocyte-derived human DCs (moDCs) and the underlying mechanism was next investigated using various approaches, including DC-allogenic T cell co-culture and DC phenotyping through transcriptomic, proteomic and FACS analyses. We mainly showed that fhFABP1 induced a tolerogenic-like phenotype in LPS-stimulated moDCs characterized by a dose-dependent increase in the cell-surface tolerogenic marker CD103 and IL-10 secretion, while DC co-stimulatory markers were not affected. A significant decrease in secretion of the pro-inflammatory cytokines IL-12p70 and IL-6 was also observed. In addition, these effects were associated with an increase in both Th2-on-Th1 ratio and IL-10 secretion by CD4+ T cells following DC-T cell co-culture. RNA sequencing and targeted proteomic analyses identified thrombospondin-1 (TSP-1) as a non-canonical factor highly expressed and secreted by fhFABP1-primed moDCs. The effect of fhFABP1 on T cell skewing was abolished when using a TSP-1 blocking antibody during DC-T cell co-culture. Immunomodulation by helminth molecules has been linked to improved metabolic homeostasis during obesity. Although fhFABP1 injection in high-fat diet-fed obese mice induced a potent Th2 immune response in adipose tissue, it did not improved insulin sensitivity or glucose homeostasis. Conclusions/Significance We show that fhFABP1 modulates T cell polarization, notably by promoting DC TSP-1 secretion in vitro, without affecting metabolic homeostasis in a mouse model of type 2 diabetes.
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Affiliation(s)
- Anna Zawistowska-Deniziak
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Joost M. Lambooij
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Alicja Kalinowska
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
| | - Thiago A. Patente
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Maciej Łapiński
- International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Hendrik J. P. van der Zande
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Katarzyna Basałaj
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
| | - Clarize M. de Korne
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Mathilde A. M. Chayé
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Thomas A. Gasan
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Luke J. Norbury
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
- School of Science, STEM College, Royal Melbourne Institute of Technology (RMIT) University, Bundoora, VIC, Australia
| | - Martin Giera
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands
| | - Arnaud Zaldumbide
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Hermelijn H. Smits
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
| | - Bruno Guigas
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
- Leiden University Center for Infectious Diseases (LU-CID), Leiden, Netherlands
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3
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Duszenko N, van Willigen DM, Welling MM, de Korne CM, van Schuijlenburg R, Winkel BM, van Leeuwen FW, Roestenberg M. A Supramolecular Platform Technology for Bacterial Cell Surface Modification. ACS Infect Dis 2020; 6:1734-1744. [PMID: 32364374 PMCID: PMC7359023 DOI: 10.1021/acsinfecdis.9b00523] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In an era of antimicrobial resistance, a better understanding of the interaction between bacteria and the sentinel immune system is needed to discover new therapeutic targets for combating bacterial infectious disease. Sentinel immune cells such as macrophages phagocytose intact bacteria and thereby initiate ensuing immune responses. The bacterial surface composition is a key element that determines the macrophage signaling. To study the role of the bacterial cell surface composition in immune recognition, we developed a platform technology for altering bacterial surfaces in a controlled manner with versatile chemical scaffolds. We show that these scaffolds are efficiently loaded onto both Gram-positive and -negative bacteria and that their presence does not impair the capacity of monocyte-derived macrophages to phagocytose bacteria and subsequently signal to other components of the immune system. We believe this technology thus presents a useful tool to study the role of bacterial cell surface composition in disease etiology and potentially in novel interventions utilizing intact bacteria for vaccination.
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Affiliation(s)
- Nikolas Duszenko
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Danny M. van Willigen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Mick M. Welling
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Clarize M. de Korne
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Roos van Schuijlenburg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Beatrice M.F. Winkel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
| | - Fijs W.B. van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam 1066 CX, The Netherlands
| | - Meta Roestenberg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, Leiden 2333 ZA, The Netherlands
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4
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Kuipers ME, Nolte-'t Hoen ENM, van der Ham AJ, Ozir-Fazalalikhan A, Nguyen DL, de Korne CM, Koning RI, Tomes JJ, Hoffmann KF, Smits HH, Hokke CH. DC-SIGN mediated internalisation of glycosylated extracellular vesicles from Schistosoma mansoni increases activation of monocyte-derived dendritic cells. J Extracell Vesicles 2020; 9:1753420. [PMID: 32489529 PMCID: PMC7241508 DOI: 10.1080/20013078.2020.1753420] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/13/2022] Open
Abstract
Helminths like Schistosoma mansoni release excretory/secretory (E/S) products that modulate host immunity to enable infection. Extracellular vesicles (EVs) are among these E/S products, yet molecular mechanisms and functionality of S. mansoni EV interaction with host immune cells is unknown. Here we demonstrate that EVs released by S. mansoni schistosomula are internalised by human monocyte-derived dendritic cells (moDCs). Importantly, we show that this uptake was mainly mediated via DC-SIGN (CD209). Blocking DC-SIGN almost completely abrogated EV uptake, while blocking mannose receptor (MR, CD206) or dendritic cell immunoreceptor (DCIR, CLEC4A) had no effect on EV uptake. Mass spectrometric analysis of EV glycans revealed the presence of surface N-glycans with terminal Galβ1-4(Fucα1-3)GlcNAc (LewisX) motifs, and a wide array of fucosylated lipid-linked glycans, including LewisX, a known ligand for DC-SIGN. Stimulation of moDCs with schistosomula EVs led to increased expression of costimulatory molecules CD86 and CD80 and regulatory surface marker PD-L1. Furthermore, schistosomula EVs increased expression of IL-12 and IL-10 by moDCs, which was partly dependent on the interaction with DC-SIGN. These results provide the first evidence that glycosylation of S. mansoni EVs facilitates the interaction with host immune cells and reveals a role for DC-SIGN and EV-associated glycoconjugates in parasite-induced immune modulation.
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Affiliation(s)
- Marije E Kuipers
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands.,Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Esther N M Nolte-'t Hoen
- Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Alwin J van der Ham
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | | | - D Linh Nguyen
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Clarize M de Korne
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Roman I Koning
- Department of Cell & Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - John J Tomes
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
| | - Karl F Hoffmann
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
| | - Hermelijn H Smits
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Cornelis H Hokke
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
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5
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Winkel BMF, de Korne CM, van Oosterom MN, Staphorst D, Meijhuis M, Baalbergen E, Ganesh MS, Dechering KJ, Vos MW, Chevalley-Maurel SC, Franke-Fayard B, van Leeuwen FWB, Roestenberg M. Quantification of wild-type and radiation attenuated Plasmodium falciparum sporozoite motility in human skin. Sci Rep 2019; 9:13436. [PMID: 31530862 PMCID: PMC6748968 DOI: 10.1038/s41598-019-49895-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/31/2019] [Indexed: 11/09/2022] Open
Abstract
Given the number of global malaria cases and deaths, the need for a vaccine against Plasmodium falciparum (Pf) remains pressing. Administration of live, radiation-attenuated Pf sporozoites can fully protect malaria-naïve individuals. Despite the fact that motility of these attenuated parasites is key to their infectivity and ultimately protective efficacy, sporozoite motility in human tissue (e.g. skin) remains wholly uncharacterized to date. We show that the ability to quantitatively address the complexity of sporozoite motility in human tissue provides an additional tool in the development of attenuated sporozoite vaccines. We imaged Pf movement in the skin of its natural host and compared wild-type and radiation-attenuated GFP-expressing Pf sporozoites. Using custom image analysis software and human skin explants we were able to quantitatively study their key motility features. This head-to-head comparison revealed that radiation attenuation impaired the capacity of sporozoites to vary their movement angle, velocity and direction, promoting less refined movement patterns. Understanding and overcoming these changes in motility will contribute to the development of an efficacious attenuated parasite malaria vaccine.
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Affiliation(s)
- Béatrice M F Winkel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Clarize M de Korne
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Matthias N van Oosterom
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Diego Staphorst
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Mark Meijhuis
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Els Baalbergen
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Munisha S Ganesh
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Koen J Dechering
- TropIQ Health Sciences, Transistorweg 5, 6534, Nijmegen, The Netherlands
| | - Martijn W Vos
- TropIQ Health Sciences, Transistorweg 5, 6534, Nijmegen, The Netherlands
| | - Séverine C Chevalley-Maurel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Blandine Franke-Fayard
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Fijs W B van Leeuwen
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Meta Roestenberg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
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6
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Hensbergen A, van Willigen DM, Welling MM, van der Wijk FA, de Korne CM, van Oosterom MN, Schottelius M, Wester HJ, Buckle T, van Leeuwen FWB. Click Chemistry in the Design and Production of Hybrid Tracers. ACS Omega 2019; 4:12438-12448. [PMID: 31460363 PMCID: PMC6682143 DOI: 10.1021/acsomega.9b01484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
Hybrid tracers containing both fluorescent and radioactive imaging labels have demonstrated clinical potential during sentinel lymph node procedures. To combine these two labels on a single targeting vector that allows tumor-targeted imaging, end-labeling strategies are often applied. For αvβ3-integrin-targeting hybrid tracers, providing an excellent model for evaluating tracer development strategies, end-labeling-based synthesis provides a rather cumbersome synthesis strategy. Hence, the aim of this study was to investigate the use of heterobifunctional cyanine dyes in a click-chemistry-based synthesis strategy for RGD-based hybrid tracers. The triazole-based hybrid tracers DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] and DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK] were obtained in fewer steps than DTPA-Lys(Cy5(SO 3 )methyl)-Cys-c[RGDyK] and had partition coefficients of log P (o/w) = -2.55 ± 0.10, -1.45 ± 0.03, and -2.67 ± 0.12, respectively. Both tracers were chemically stable, and the brightnesses of DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] and DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK] were, respectively, 23 × 103 and 40 × 103 M-1 cm-1; lower than that of the reference tracer DTPA-Lys(Cy5(SO 3 )methyl)-Cys-c[RGDyK] (50 × 103 M-1 cm-1). Assessment of serum protein binding revealed no statistically significant difference (44 ± 2 and 40 ± 2% bound for DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] and DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK], respectively; 36 ± 5% bound for DTPA-Lys(Cy5(SO 3 )methyl)-Cys-c[RGDyK]; p > 0.05). DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] (K D = 17.5 ± 6.0) had a statistically significantly higher affinity than the reference compound DTPA-Lys(Cy5(SO 3 )methyl)-Cys-c[RGDyK] (K D = 30.3 ± 5.7; p < 0.0001), but DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK] had a statistically significantly lower affinity (K D = 76.5 ± 18.3 nM; p < 0.0001). Both [ 111 In]DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] and [ 111 In]DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK] enabled in vivo visualization of the 4T1 tumor via fluorescence and single-photon emission computed tomography (SPECT) imaging. Biodistribution data (% ID/g) revealed a significant increase in nonspecific uptake in the kidney, liver, and muscle for both [ 111 In]DTPA.DBCO.N 3 (SO 3 )-Cy5-c[RGDyK] and [ 111 In]DTPA.BCN.N 3 (SO 3 )-Cy5-c[RGDyK]. As a result of the higher background activity, the tumor-to-background ratio of the click-labeled RGD analogues was twofold lower compared to the end-labeled reference compound. The use of click chemistry labeling did not yield a pronounced negative effect on serum protein binding, in vitro stability, and receptor affinity; and tumors could still be visualized using SPECT and fluorescence imaging. However, quantitative in vivo biodistribution data suggest that the triazole and strained cyclooctyne moieties associated with this type of click chemistry negatively influence the pharmacokinetics of RGD peptides. Nevertheless, the design might still hold promise for other targets/targeting moieties.
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Affiliation(s)
- Albertus
W. Hensbergen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Danny M. van Willigen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Mick M. Welling
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Felicia A. van der Wijk
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Clarize M. de Korne
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Matthias N. van Oosterom
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Margret Schottelius
- Pharmaceutical
Radiochemistry, Technische Universität
München, Garching 85748, Germany
| | - Hans-Jürgen Wester
- Pharmaceutical
Radiochemistry, Technische Universität
München, Garching 85748, Germany
| | - Tessa Buckle
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
| | - Fijs W. B. van Leeuwen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands
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7
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Welling MM, de Korne CM, Spa SJ, van Willigen DM, Hensbergen AW, Bunschoten A, Duszenko N, Smits WK, Roestenberg M, van Leeuwen FWB. Multimodal Tracking of Controlled Staphylococcus aureus Infections in Mice. ACS Infect Dis 2019; 5:1160-1168. [PMID: 31016979 PMCID: PMC6630532 DOI: 10.1021/acsinfecdis.9b00015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Indexed: 12/14/2022]
Abstract
There is a need to develop diagnostic and analytical tools that allow noninvasive monitoring of bacterial growth and dissemination in vivo. For such cell-tracking studies to hold translational value to controlled human infections, in which volunteers are experimentally colonized, they should not require genetic modification, and they should allow tracking over a number of replication cycles. To gauge if an antimicrobial peptide tracer, 99mTc-UBI29-41-Cy5, which contains both a fluorescent and a radioactive moiety, could be used for such in vivo bacterial tracking, we performed longitudinal imaging of a thigh-muscle infection with 99mTc-UBI29-41-Cy5-labeled Staphylococcus aureus. Mice were imaged using SPECT and fluorescence-imaging modalities at various intervals during a 28 h period. Biodistribution analyses were performed to quantitate radioactivity in the abscess and other tissues. SPECT and fluorescence imaging in mice showed clear retention of the 99mTc-UBI29-41-Cy5-labeled bacteria following inoculation in the thigh muscle. Despite bacterial replication, the signal intensity in the abscess only modestly decreased within a 28 h period: 52% of the total injected radioactivity per gram of tissue (%ID/g) at 4 h postinfection (pi) versus 44%ID/g at 28 h pi (15% decrease). After inoculation, a portion of the bacteria disseminated from the abscess, and S. aureus cultures were obtained from radioactive urine samples. Bacterial staining with 99mTc-UBI29-41-Cy5 allowed noninvasive bacterial-cell tracking during a 28 h period. Given the versatility of the presented bacterial-tracking method, we believe that this concept could pave the way for precise imaging capabilities during controlled-human-infection studies.
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Affiliation(s)
- Mick M. Welling
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Clarize M. de Korne
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
- Department
of Parasitology and Department of Infectious Diseases, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Silvia J. Spa
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Danny M. van Willigen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Albertus W. Hensbergen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Anton Bunschoten
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
- Laboratory
of BioNanoTechnology, Department of Agrotechnology and Food Sciences, Wageningen University & Research, 6708PB Wageningen, The Netherlands
| | - Nikolas Duszenko
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
- Department
of Parasitology and Department of Infectious Diseases, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Wiep Klaas Smits
- Department
of Medical Microbiology, Section Experimental Bacteriology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Meta Roestenberg
- Department
of Parasitology and Department of Infectious Diseases, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Fijs W. B. van Leeuwen
- Interventional
Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
- Laboratory
of BioNanoTechnology, Department of Agrotechnology and Food Sciences, Wageningen University & Research, 6708PB Wageningen, The Netherlands
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8
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de Korne CM, Lageschaar LT, van Oosterom MN, Baalbergen E, Winkel BMF, Chevalley-Maurel SC, Velders AH, Franke-Fayard BMD, van Leeuwen FWB, Roestenberg M. Regulation of Plasmodium sporozoite motility by formulation components. Malar J 2019; 18:155. [PMID: 31046772 PMCID: PMC6498664 DOI: 10.1186/s12936-019-2794-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/25/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The protective efficacy of the most promising malaria whole-parasite based vaccine candidates critically depends on the parasite's potential to migrate in the human host. Key components of the parasite motility machinery (e.g. adhesive proteins, actin/myosin-based motor, geometrical properties) have been identified, however the regulation of this machinery is an unknown process. METHODS In vitro microscopic live imaging of parasites in different formulations was performed and analysed, with the quantitative analysis software SMOOTIn vitro, their motility; their adherence capacity, movement pattern and velocity during forward locomotion. RESULTS SMOOTIn vitro enabled the detailed analysis of the regulation of the motility machinery of Plasmodium berghei in response to specific (macro)molecules in the formulation. Albumin acted as an essential supplement to induce parasite attachment and movement. Glucose, salts and other whole serum components further increased the attachment rate and regulated the velocity of the movement. CONCLUSIONS Based on the findings can be concluded that a complex interplay of albumin, glucose and certain salts and amino acids regulates parasite motility. Insights in parasite motility regulation by supplements in solution potentially provide a way to optimize the whole-parasite malaria vaccine formulation.
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Affiliation(s)
- Clarize M de Korne
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Laboratory of BioNanoTechnology, Axis, Building 118, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Luuk T Lageschaar
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Laboratory of BioNanoTechnology, Axis, Building 118, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Matthias N van Oosterom
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
| | - Els Baalbergen
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
| | - Beatrice M F Winkel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
| | - Severine C Chevalley-Maurel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
| | - Aldrik H Velders
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Laboratory of BioNanoTechnology, Axis, Building 118, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Blandine M D Franke-Fayard
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
| | - Fijs W B van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands
- Laboratory of BioNanoTechnology, Axis, Building 118, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Meta Roestenberg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands.
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, PO BOX 9600, 2300 RC, Leiden, The Netherlands.
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9
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Winkel BM, de Korne CM, van Oosterom MN, Staphorst D, Bunschoten A, Langenberg MC, Chevalley-Maurel SC, Janse CJ, Franke-Fayard B, van Leeuwen FW, Roestenberg M. A tracer-based method enables tracking of Plasmodium falciparum malaria parasites during human skin infection. Theranostics 2019; 9:2768-2778. [PMID: 31244921 PMCID: PMC6568182 DOI: 10.7150/thno.33467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 02/22/2019] [Indexed: 11/10/2022] Open
Abstract
Introduction: The skin stage of malaria is a vital and vulnerable migratory life stage of the parasite. It has been characterised in rodent models, but remains wholly uninvestigated for human malaria parasites. To enable in depth analysis of not genetically modified (non-GMO) Plasmodium falciparum (Pf) sporozoite behaviour in human skin, we devised a labelling technology (Cy5M2, targeting the sporozoite mitochondrion) that supports tracking of individual non-GMO sporozoites in human skin. Methods: Sporozoite labelling with Cy5M2 was performed in vitro as well as via the feed of infected Anopheles mosquitos. Labelling was validated using confocal microscopy and flow cytometry and the fitness of labelled sporozoites was determined by analysis of infectivity to human hepatocytes in vitro, and in vivo in a rodent infection model. Using confocal video microscopy and custom software, single-sporozoite tracking studies in human skin-explants were performed. Results: Both in vitro and in mosquito labelling strategies yielded brightly fluorescent sporozoites of three different Plasmodium species. Cy5M2 uptake colocalized with MitoTracker® green and could be blocked using the known Translocator protein (TSPO)-inhibitor PK11195. This method supported the visualization and subsequent quantitative analysis of the migration patterns of individual non-GMO Pf sporozoites in human skin and did not affect the fitness of sporozoites. Conclusions: The ability to label and image non-GMO Plasmodium sporozoites provides the basis for detailed studies on the human skin stage of malaria with potential for in vivo translation. As such, it is an important tool for development of vaccines based on attenuated sporozoites and their route of administration.
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Affiliation(s)
- Béatrice M.F. Winkel
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Clarize M. de Korne
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Matthias N. van Oosterom
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Diego Staphorst
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Anton Bunschoten
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
- Laboratory of BioNanoTechnology Wageningen University and Research, Droevendaalsesteeg 4, 6708 PB Wageningen, The Netherlands
| | - Marijke C.C. Langenberg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | | | - Chris J. Janse
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Blandine Franke-Fayard
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Fijs W.B. van Leeuwen
- Interventional Molecular Imaging laboratory, Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Meta Roestenberg
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
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10
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Winkel BMF, Dalenberg MR, de Korne CM, Feijt C, Langenberg MCC, Pelgrom L, Ganesh MS, Yazdanbakhsh M, Smits HH, de Jong EC, Everts B, van Leeuwen FWB, Hokke CH, Roestenberg M. Early Induction of Human Regulatory Dermal Antigen Presenting Cells by Skin-Penetrating Schistosoma Mansoni Cercariae. Front Immunol 2018; 9:2510. [PMID: 30429854 PMCID: PMC6220649 DOI: 10.3389/fimmu.2018.02510] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/10/2018] [Indexed: 12/14/2022] Open
Abstract
Following initial invasion of Schistosoma mansoni cercariae, schistosomula reside in the skin for several days during which they can interact with the dermal immune system. While murine experiments have indicated that exposure to radiation-attenuated (RA) cercariae can generate protective immunity which is initiated in the skin stage, contrasting non-attenuated cercariae, such data is missing for the human model. Since murine skin does not form a reliable marker for immune responses in human skin, we used human skin explants to study the interaction with non-attenuated and RA cercariae with dermal innate antigen presenting cells (APCs) and the subsequent immunological responses. We exposed human skin explants to cercariae and visualized their invasion in real time (initial 30 min) using novel imaging technologies. Subsequently, we studied dermal immune responses and found an enhanced production of regulatory cytokine interleukin (IL)-10, pro-inflammatory cytokine IL-6 and macrophage inflammatory protein (MIP)-1α within 3 days of exposure. Analysis of dermal dendritic cells (DDCs) for their phenotype revealed an increased expression of immune modulators programmed death ligand (PD-L) 1 and 2, and increased IL-10 production. Ex vivo primed DDCs suppress Th1 polarization of naïve T-cells and increase T-cell IL-10 production, indicating their regulatory potential. These immune responses were absent or decreased after exposure to RA parasites. Using transwells, we show that direct contact between APCs and cercariae is required to induce their regulatory phenotype. To the best of our knowledge this is the first study that attempts to provide insight in the human dermal S. mansoni cercariae invasion and subsequent immune responses comparing non-attenuated with RA parasites. We reveal that cercariae induce a predominantly regulatory immune response whereas RA cercariae fail to achieve this. This initial understanding of the dermal immune suppressive capacity of S. mansoni cercariae in humans provides a first step toward the development of an effective schistosome vaccine.
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Affiliation(s)
- Béatrice M F Winkel
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands.,Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Mirjam R Dalenberg
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Clarize M de Korne
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands.,Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Carola Feijt
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | | | - Leonard Pelgrom
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Munisha S Ganesh
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Maria Yazdanbakhsh
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | | | - Esther C de Jong
- Department of Cell Biology and Histology, Academic Medical Center, Amsterdam, Netherlands
| | - Bart Everts
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Fijs W B van Leeuwen
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Cornelis H Hokke
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands
| | - Meta Roestenberg
- Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands.,Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
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11
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Grivas N, van der Roest RC, de Korne CM, KleinJan GH, Sikorska K, Schoots IG, Tillier C, van der Broek B, Jalink K, Heijmink SWTJP, Buckle T, van Leeuwen FWB, van der Poel HG. The value of periprostatic fascia thickness and fascia preservation as prognostic factors of erectile function after nerve-sparing robot-assisted radical prostatectomy. World J Urol 2018; 37:309-315. [PMID: 29936567 DOI: 10.1007/s00345-018-2387-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 06/19/2018] [Indexed: 12/13/2022] Open
Abstract
PURPOSE To determine the correlation of preoperative fascia thickness (FT) and intraoperative fascia preservation (FP) with erectile function (EF) after nerve-sparing robot-assisted radical prostatectomy (RARP). METHODS Our analysis included 106 patients, with localized prostate cancer and no erectile dysfunction (ED) before RARP, assessed with preoperative 3 Tesla (3 T) multiparametric magnetic resonance imaging (MRI). FP score was defined as the extent of FP from the base to the apex of the prostate, quantitatively assessed by the surgeon. Median fascia thickness (MFT) per patient was defined as the sum of the median FT of 12 MRI regions. Preserved MFT (pMFT) was the sum of the saved MFT. The percentage of pFMT (ppMFT) was also calculated. Fascia surface (FS) was measured on MRI and it was combined with FP score resulting in preserved FS (pFS) and percentage of pFS (ppFS). RESULTS FP score, pMFT, ppMFT, pFS and ppFS were significantly lower (p < 0.0001) in patients with ED. In the multivariate regression analysis, lower FP score [odds ratio (OR) 0.721, p = 0.03] and lower ppMFT (OR 0.001, p = 0.027) were independent predictors of ED. ROC analysis showed the highest area under the curve for ppMFT (0.787) and FP score (0.767) followed by pMFT (0.755) and ppFS (0.743). CONCLUSIONS MRI-determined periprostatic FT combined with intraoperative FP score are correlated to postprostatectomy EF. Based on the hypothesis that a thicker fascia forms a protective layer for the nerves, we recommend assessing FT preoperatively to counsel men for the odds of preserving EF after RARP.
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Affiliation(s)
- Nikolaos Grivas
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - Rosanne C van der Roest
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Clarize M de Korne
- Department of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - Gijs H KleinJan
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
- Department of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - Karolina Sikorska
- Department of Biometrics, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Ivo G Schoots
- Department of Radiology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Corinne Tillier
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Bram van der Broek
- Department of Cell Biology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Kees Jalink
- Department of Cell Biology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Stijn W T J P Heijmink
- Department of Radiology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Tessa Buckle
- Department of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - Fijs W B van Leeuwen
- Department of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - Henk G van der Poel
- Department of Urology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
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12
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Buckle T, van Willigen DM, Spa SJ, Hensbergen AW, van der Wal S, de Korne CM, Welling MM, van der Poel HG, Hardwick JCH, van Leeuwen FWB. Tracers for Fluorescence-Guided Surgery: How Elongation of the Polymethine Chain in Cyanine Dyes Alters the Pharmacokinetics of a Dual-Modality c[RGDyK] Tracer. J Nucl Med 2018; 59:986-992. [PMID: 29449447 DOI: 10.2967/jnumed.117.205575] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/12/2018] [Indexed: 01/07/2023] Open
Abstract
The potential of receptor-mediated fluorescence-based image-guided surgery tracers is generally linked to the near-infrared emission profile and good-manufacturing-production availability of fluorescent dyes. Surprisingly, little is known about the critical interaction between the structural composition of the dyes and the pharmacokinetics of the tracers. In this study, a dual-modality tracer design was used to systematically and quantitatively evaluate the influence of elongation of the polymethine chain in a fluorescent cyanine dye on the imaging potential of a targeted tracer. Methods: As a model system, the integrin marker αvβ3 was targeted using arginylglycylaspartisc acid [RGD]-based vectors functionalized with a 111In-diethylenetriaminepentaacetic acid (DTPA) chelate and a fluorescent dye: (Cy3-(SO3)methyl-COOH [emission wavelength (λem), 580 nm], Cy5-(SO3)methyl-COOH [λem, 680 nm], or Cy7-(SO3)methyl-COOH [λem, 780 nm]). Tracers were analyzed for differences in photophysical properties, serum protein binding, chemical or optical stability, and signal penetration through tissue. Receptor affinities were evaluated using saturation and competition experiments. In vivo biodistribution (SPECT imaging and percentage injected dose per gram of tissue) was assessed in tumor-bearing mice and complemented with in vivo and ex vivo fluorescence images obtained using a clinical-grade multispectral fluorescence laparoscope. Results: Two carbon-atom-step variations in the polymethine chain of the fluorescent cyanine dyes were shown to significantly influence the chemical and photophysical characteristics (e.g., stability, brightness, and tissue penetration) of the hybrid RGD tracers. DTPA-Cy5-(SO3)methyl-COOH-c[RGDyK] structurally outperformed its Cy3 and Cy7 derivatives. Radioactivity-based evaluation of in vivo tracer pharmacokinetics yielded the lowest nonspecific uptake and highest tumor-to-background ratio for DTPA-Cy5-(SO3)methyl-COOH-c[RGDyK] (13.2 ± 1.7), with the Cy3 and Cy7 analogs trailing at respective tumor-to-background ratios of 5.7 ± 0.7 and 4.7 ± 0.7. Fluorescence-based assessment of tumor visibility revealed a similar trend. Conclusion: These findings underline that variations in the polymethine chain lengths of cyanine dyes have a profound influence on the photophysical properties, stability, and in vivo targeting capabilities of fluorescent imaging tracers. In a direct comparison, the intermediate-length dye (Cy5) yielded a superior c[RGDyK] tracer, compared with the shorter (Cy3) and longer (Cy7) analogs.
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Affiliation(s)
- Tessa Buckle
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.,Division of Molecular Pathology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Danny M van Willigen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Silvia J Spa
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Albertus W Hensbergen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Steffen van der Wal
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Clarize M de Korne
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Mick M Welling
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Henk G van der Poel
- Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands; and
| | - James C H Hardwick
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Fijs W B van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands .,Department of Urology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands; and
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