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Marcigaglia S, De Plus R, Vandendriessche C, Schiltz E, Cuypers ML, Cools J, Hoffman LD, Vandenbroucke RE, Dewilde M, Haesler S. Microfluidic Interfaces for Chronic Bidirectional Access to the Brain. Adv Healthc Mater 2024:e2400438. [PMID: 38885495 DOI: 10.1002/adhm.202400438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/11/2024] [Indexed: 06/20/2024]
Abstract
Two-photon polymerization (TPP) is an additive manufacturing technique with micron-scale resolution that is rapidly gaining ground for a range of biomedical applications. TPP is particularly attractive for the creation of microscopic three-dimensional structures in biocompatible and noncytotoxic resins. Here, TPP is used to develop microfluidic interfaces which provide chronic fluidic access to the brain of preclinical research models. These microcatheters can be used for either convection-enhanced delivery (CED) or for the repeated collection of liquid biopsies. In a brain phantom, infusions with the micronozzle result in more localized distribution clouds and lower backflow compared to a control catheter. In mice, the delivery interface enables faster, more precise, and physiologically less disruptive fluid injections. A second microcatheter design enables repeated, longitudinal sampling of cerebrospinal fluid (CSF) over time periods as long as 250 days. Moreover, further in vivo studies demonstrate that the blood-CSF barrier is intact after chronic implantation of the sampling interface and that samples are suitable for downstream molecular analysis for the identification of nucleic acid- or peptide-based biomarkers. Ultimately, the versatility of this fabrication technique implies a great translational potential for simultaneous drug delivery and biomarker tracking in a range of human neurological diseases.
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Affiliation(s)
- Simone Marcigaglia
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Department of Neurosciences, KU Leuven, Leuven, 3000, Belgium
| | - Robin De Plus
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Department of Neurosciences, KU Leuven, Leuven, 3000, Belgium
| | - Charysse Vandendriessche
- VIB Center for Inflammation Research, VIB, Ghent, 9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, 9052, Belgium
| | - Eleonore Schiltz
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Department of Neurosciences, KU Leuven, Leuven, 3000, Belgium
| | - Marie-Lynn Cuypers
- Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, 3000, Belgium
| | - Jordi Cools
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Current affiliation, Thermofisher Scientific (AIG/MSD), Dilbeek, 1702, Belgium
| | - Luis D Hoffman
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Current affiliation, SWave Photonics, Leuven, 3001, Belgium
| | - Roosmarijn E Vandenbroucke
- VIB Center for Inflammation Research, VIB, Ghent, 9052, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, 9052, Belgium
| | - Maarten Dewilde
- Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, 3000, Belgium
- PharmAbs-The KU Leuven Antibody Center, KU Leuven, Leuven, 3000, Belgium
| | - Sebastian Haesler
- Neuroelectronics Research Flanders (NERF), Leuven, 3000, Belgium
- Department of Neurosciences, KU Leuven, Leuven, 3000, Belgium
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Shen J, Carcaboso AM, Hubbard KE, Tagen M, Wynn HG, Panetta JC, Waters CM, Elmeliegy MA, Stewart CF. Compartment-specific roles of ATP-binding cassette transporters define differential topotecan distribution in brain parenchyma and cerebrospinal fluid. Cancer Res 2009; 69:5885-92. [PMID: 19567673 PMCID: PMC2729173 DOI: 10.1158/0008-5472.can-09-0700] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Topotecan is a substrate of the ATP-binding cassette transporters P-glycoprotein (P-gp/MDR1) and breast cancer resistance protein (BCRP). To define the role of these transporters in topotecan penetration into the ventricular cerebrospinal fluid (vCSF) and brain parenchymal extracellular fluid (ECF) compartments, we performed intracerebral microdialysis on transporter-deficient mice after an intravenous dose of topotecan (4 mg/kg). vCSF penetration of unbound topotecan lactone was measured as the ratio of vCSF-to-plasma area under the concentration-time curves. The mean +/- SD ratios for wild-type, Mdr1a/b(-/-), Bcrp1(-/-), and Mdr1a/b(-/-)Bcrp1(-/-) mice were 3.07 +/- 0.09, 2.57 +/- 0.17, 1.63 +/- 0.12, and 0.86 +/- 0.05, respectively. In contrast, the ECF-to-plasma ratios for wild-type, Bcrp1(-/-), and Mdr1a/b(-/-)Bcrp1(-/-) mice were 0.36 +/- 0.06, 0.42 +/- 0.06, and 0.88 +/- 0.07. Topotecan lactone was below detectable limits in the ECF of Mdr1a/b(-/-) mice. When gefitinib (200 mg/kg) was preadministered to inhibit Bcrp1 and P-gp, the vCSF-to-plasma ratio decreased to 1.29 +/- 0.09 in wild-type mice and increased to 1.13 +/- 0.13 in Mdr1a/b(-/-)Bcrp1(-/-) mice, whereas the ECF-to-plasma ratio increased to 0.74 +/- 0.14 in wild-type and 1.07 +/- 0.03 in Mdr1a/b(-/-)Bcrp1(-/-) mice. Preferential active transport of topotecan lactone over topotecan carboxylate was shown in vivo by vCSF lactone-to-carboxylate area under the curve ratios for wild-type, Mdr1a/b(-/-), Bcrp1(-/-), and Mdr1a/b(-/-)Bcrp1(-/-) mice of 5.69 +/- 0.83, 3.85 +/- 0.64, 3.61 +/- 0.46, and 0.78 +/- 0.19, respectively. Our results suggest that Bcrp1 and P-gp transport topotecan into vCSF and out of brain parenchyma through the blood-brain barrier. These findings may help to improve pharmacologic strategies to treat brain tumors.
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Affiliation(s)
- Jun Shen
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
- University of Tennessee Health Science Center, University of Tennessee, Memphis
| | - Angel M. Carcaboso
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
| | - K. Elaine Hubbard
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
| | - Michael Tagen
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
| | - Henry G. Wynn
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
| | - John C. Panetta
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
| | | | - Mohamed A. Elmeliegy
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
- University of Tennessee Health Science Center, University of Tennessee, Memphis
| | - Clinton F. Stewart
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, University of Tennessee, Memphis
- University of Tennessee Health Science Center, University of Tennessee, Memphis
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Alves G, Figueiredo I, Castel-Branco M, Lourenço N, Falcão A, Caramona M, Soares-da-Silva P. Disposition of eslicarbazepine acetate in the mouse after oral administration. Fundam Clin Pharmacol 2008; 22:529-36. [DOI: 10.1111/j.1472-8206.2008.00617.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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