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Raguraman R, Bhavsar D, Kim D, Ren X, Sikavitsas V, Munshi A, Ramesh R. Tumor-targeted exosomes for delivery of anticancer drugs. Cancer Lett 2023; 558:216093. [PMID: 36822543 PMCID: PMC10025995 DOI: 10.1016/j.canlet.2023.216093] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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: 01/18/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 02/23/2023]
Abstract
Exosomes are small phospholipid bilayer vesicles that are naturally produced by all living cells, both prokaryotes and eukaryotes. The exosomes due to their unique size, reduced immunogenicity, and their ability to mimic synthetic liposomes in carrying various anticancer drugs have been tested as drug delivery vehicles for cancer treatment. An added advantage of developing exosomes as a drug carrier is the ease of manipulating their intraluminal content and their surface modification to achieve tumor-targeted drug delivery. In the past ten-years, there has been an exponential increase in the number of exosome-related studies in cancer. Preclinical studies demonstrate exosomes-mediated delivery of chemotherapeutics, biologicals and natural products produce potent anticancer activity both, in vitro and in vivo. In contrast, the number of exosome-based clinical trials are few due to challenges in the manufacturing and scalability related to large-scale production of exosomes and their storage and stability. Herein, we discuss recent advances in exosome-based drug delivery for cancer treatment in preclinical and clinical studies and conclude with challenges to be overcome for translating a larger number of exosome-based therapies into the clinic.
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Affiliation(s)
- Rajeswari Raguraman
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Dhaval Bhavsar
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Dongin Kim
- Department of Pharmaceutical Sciences, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Xiaoyu Ren
- Department of Pharmaceutical Sciences, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Vassilios Sikavitsas
- School of Chemical, Biological and Material Engineering, The University of Oklahoma, Norman, Oklahoma, 73019, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Anupama Munshi
- Department of Radiation Oncology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Rajagopal Ramesh
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; OU Health Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; Graduate Program in Biomedical Sciences, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
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Kadri OE, Williams C, Sikavitsas V, Voronov RS. Numerical accuracy comparison of two boundary conditions commonly used to approximate shear stress distributions in tissue engineering scaffolds cultured under flow perfusion. Int J Numer Method Biomed Eng 2018; 34:e3132. [PMID: 30047248 DOI: 10.1002/cnm.3132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 07/04/2018] [Accepted: 07/15/2018] [Indexed: 06/08/2023]
Abstract
INTRODUCTION Flow-induced shear stresses have been found to be a stimulatory factor in pre-osteoblastic cells seeded in 3D porous scaffolds and cultured under continuous flow perfusion. However, due to the complex internal structure of the scaffolds, whole scaffold calculations of the local shear forces are computationally intensive. Instead, representative volume elements (RVEs), which are obtained by extracting smaller portions of the scaffold, are commonly used in literature without a numerical accuracy standard. OBJECTIVE Hence, the goal of this study is to examine how closely the whole scaffold simulations are approximated by the two types of boundary conditions used to enable the RVEs: "wall boundary condition" (WBC) and "periodic boundary condition" (PBC). METHOD To that end, lattice Boltzmann method fluid dynamics simulations were used to model the surface shear stresses in 3D scaffold reconstructions, obtained from high-resolution microcomputed tomography images. RESULTS It was found that despite the RVEs being sufficiently larger than 6 times the scaffold pore size (which is the only accuracy guideline found in literature), the stresses were still significantly under-predicted by both types of boundary conditions: between 20% and 80% average error, depending on the scaffold's porosity. Moreover, it was found that the error grew with higher porosity. This is likely due to the small pores dominating the flow field, and thereby negating the effects of the unrealistic boundary conditions, when the scaffold porosity is small. Finally, it was found that the PBC was always more accurate and computationally efficient than the WBC. Therefore, it is the recommended type of RVE.
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Affiliation(s)
- Olufemi E Kadri
- Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA
| | - Cortes Williams
- Stephenson School of Biomedical Engineering, The University of Oklahoma Norman, OK, 73019, USA
| | - Vassilios Sikavitsas
- Stephenson School of Biomedical Engineering, The University of Oklahoma Norman, OK, 73019, USA
| | - Roman S Voronov
- Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA
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Abousleiman RI, Reyes Y, McFetridge P, Sikavitsas V. Tendon Tissue Engineering Using Cell-Seeded Umbilical Veins Cultured in a Mechanical Stimulator. Tissue Eng Part A 2009; 15:787-95. [DOI: 10.1089/ten.tea.2008.0102] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
| | - Yuliana Reyes
- Department of Bioengineering, University of Oklahoma, Norman, Oklahoma
| | - Peter McFetridge
- Department of Bioengineering, University of Oklahoma, Norman, Oklahoma
- The School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, Oklahoma
| | - Vassilios Sikavitsas
- Department of Bioengineering, University of Oklahoma, Norman, Oklahoma
- The School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, Oklahoma
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Abstract
The umbilical cord is a biological tissue that is readily available and is usually discarded. In this study, we investigate the potential of making use of part of the human umbilical cord, in particular the umbilical vein, as a functional tissue engineering scaffold. Previous studies suggested the use of the human umbilical vein (HUV) as an acellular vascular grafting material. We propose taking advantage of the longitudinal mechanical properties of the HUV to use it as a scaffold material for musculoskeletal soft tissue regeneration. HUVs were mechanically dissected from 8.5-cm sections of fresh human umbilical cords. The sections were inverted such that the luminal side formed the exterior surface. HUVs were then decellularized, and filled with mesenchymal stem cells (MSCs) suspended in a type I collagen hydrogel. Seeded HUVs were cultured for periods of up to 2 weeks. After 2 weeks of culture, results showed a significant increase in cell number reaching almost three times the original inoculation density. Histological analysis revealed cell integration and migration into the HUV scaffold and extensive remodeling of extracellular matrix. Mechanically, the ultimate tensile stress doubled, and elastic modulus values were almost 2.7-fold higher. Given the differentiation capacity of the MSCs, along with the appropriate biochemical and biomechanical environment, the seeded HUV has a potential for ligament or tendon regeneration.
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Affiliation(s)
- Rita I Abousleiman
- Bioengineering Department, University of Oklahoma, Norman, OK 73019, USA
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Sikavitsas V, Nitsche JM, Mountziaris TJ. Transport and kinetic processes underlying biomolecular interactions in the BIACORE optical biosensor. Biotechnol Prog 2002; 18:885-97. [PMID: 12153326 DOI: 10.1021/bp020045z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The transport and kinetic processes describing biomolecular interactions in the BIACORE optical biosensor have been studied with the help of a mathematical model. In comparison to previous models, the model presented here couples, for the first time, transport phenomena in the flow channel with hindered diffusive transport and reactions inside the hydrogel. Simulated experiments based on this model, and two simpler models extant in the literature, are used to identify cases under which the detailed model is essential for accurate prediction of kinetic parameters. It is shown that this model can substantially improve the accuracy of kinetic parameter estimation when transport limitations in the flow channel and/or the hydrogel significantly influence the observed instrument response curves. The model can extend the range of the instrument's applicability to higher concentrations of immobilized species within the hydrogel. It can also be used for accurate design of experiments with the purpose of minimizing errors in the estimation of the kinetic parameters.
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Affiliation(s)
- V Sikavitsas
- Department of Chemical Engineering, State University of New York, Buffalo, New York 14260, USA
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