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Lim KS, Levato R, Costa PF, Castilho MD, Alcala-Orozco CR, van Dorenmalen KMA, Melchels FPW, Gawlitta D, Hooper GJ, Malda J, Woodfield TBF. Bio-resin for high resolution lithography-based biofabrication of complex cell-laden constructs. Biofabrication 2018; 10:034101. [DOI: 10.1088/1758-5090/aac00c] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Stokman G, Qin Y, Booij TH, Ramaiahgari S, Lacombe M, Dolman MEM, van Dorenmalen KMA, Teske GJD, Florquin S, Schwede F, van de Water B, Kok RJ, Price LS. Epac-Rap signaling reduces oxidative stress in the tubular epithelium. J Am Soc Nephrol 2014; 25:1474-85. [PMID: 24511123 DOI: 10.1681/asn.2013070679] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Activation of Rap1 by exchange protein activated by cAMP (Epac) promotes cell adhesion and actin cytoskeletal polarization. Pharmacologic activation of Epac-Rap signaling by the Epac-selective cAMP analog 8-pCPT-2'-O-Me-cAMP during ischemia-reperfusion (IR) injury reduces renal failure and application of 8-pCPT-2'-O-Me-cAMP promotes renal cell survival during exposure to the nephrotoxicant cisplatin. Here, we found that activation of Epac by 8-pCPT-2'-O-Me-cAMP reduced production of reactive oxygen species during reoxygenation after hypoxia by decreasing mitochondrial superoxide production. Epac activation prevented disruption of tubular morphology during diethyl maleate-induced oxidative stress in an organotypic three-dimensional culture assay. In vivo renal targeting of 8-pCPT-2'-O-Me-cAMP to proximal tubules using a kidney-selective drug carrier approach resulted in prolonged activation of Rap1 compared with nonconjugated 8-pCPT-2'-O-Me-cAMP. Activation of Epac reduced antioxidant signaling during IR injury and prevented tubular epithelial injury, apoptosis, and renal failure. Our data suggest that Epac1 decreases reactive oxygen species production by preventing mitochondrial superoxide formation during IR injury, thus limiting the degree of oxidative stress. These findings indicate a new role for activation of Epac as a therapeutic application in renal injury associated with oxidative stress.
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Affiliation(s)
- Geurt Stokman
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands;
| | - Yu Qin
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands
| | - Tijmen H Booij
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands
| | - Sreenivasa Ramaiahgari
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands
| | | | - M Emmy M Dolman
- Department of Pharmaceutics, Utrecht University, Utrecht, The Netherlands
| | | | | | - Sandrine Florquin
- Department of Pathology, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Bob van de Water
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands
| | - Robbert J Kok
- Department of Pharmaceutics, Utrecht University, Utrecht, The Netherlands
| | - Leo S Price
- Division of Toxicology, Leiden Academic Centre for Drug Research, Leiden, The Netherlands; OcellO BV, Leiden, The Netherlands
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Dolman MEEM, van Dorenmalen KMA, Pieters EHE, Sparidans RW, Lacombe M, Szokol B, Orfi L, Kéri G, Bovenschen N, Storm G, Hennink WE, Kok RJ. Dendrimer-based macromolecular conjugate for the kidney-directed delivery of a multitargeted sunitinib analogue. Macromol Biosci 2011; 12:93-103. [PMID: 21998092 DOI: 10.1002/mabi.201100277] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 08/12/2011] [Indexed: 11/07/2022]
Abstract
The development of a macromolecular conjugate of a multitargeted tyrosine kinase inhibitor is described that can be used for renal-specific delivery into proximal tubular cells. A novel sunitinib analogue, that is, 17864, is conjugated to a NH(2) -PAMAM-G3 dendrimer via the platinum (II)-based Universal Linkage System (ULS™). The activity of 17864 is retained after coordination to the ULS linker alone or when coupled to NH(2) -PAMAM-G3. 17864-UlS-NH(2) -PAMAM-G3 is non-toxic to proximal tubular cells in vitro. After intravenous administration to mice, 17864-UlS-NH(2) -PAMAM-G3 rapidly and efficiently accumulates in the kidneys. These results are encouraging for future studies focusing on the development of novel therapeutics for the treatment of renal diseases.
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Affiliation(s)
- M E Emmy M Dolman
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, Utrecht, The Netherlands
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