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Lim DK, Wylie RG, Langer RS, Kohane DS. Corrigendum to "Selective binding of C-6OH sulfated hyaluronic acid to the angiogenic isoform of VEGF 165" [Biomaterials 77(2016) 130-138]. Biomaterials 2024; 307:122501. [PMID: 38418279 PMCID: PMC10981552 DOI: 10.1016/j.biomaterials.2024.122501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Affiliation(s)
- Dong-Kwon Lim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, South Korea; Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States
| | - Ryan G Wylie
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St. W., Hamilton, Ontario, L8S 4M1, Canada; Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States
| | - Robert S Langer
- David H. Koch Institutes for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States.
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Li B, Raji IO, Gordon AGR, Sun L, Raimondo TM, Oladimeji FA, Jiang AY, Varley A, Langer RS, Anderson DG. Accelerating ionizable lipid discovery for mRNA delivery using machine learning and combinatorial chemistry. Nat Mater 2024:10.1038/s41563-024-01867-3. [PMID: 38740955 DOI: 10.1038/s41563-024-01867-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 03/15/2024] [Indexed: 05/16/2024]
Abstract
To unlock the full promise of messenger (mRNA) therapies, expanding the toolkit of lipid nanoparticles is paramount. However, a pivotal component of lipid nanoparticle development that remains a bottleneck is identifying new ionizable lipids. Here we describe an accelerated approach to discovering effective ionizable lipids for mRNA delivery that combines machine learning with advanced combinatorial chemistry tools. Starting from a simple four-component reaction platform, we create a chemically diverse library of 584 ionizable lipids. We screen the mRNA transfection potencies of lipid nanoparticles containing those lipids and use the data as a foundational dataset for training various machine learning models. We choose the best-performing model to probe an expansive virtual library of 40,000 lipids, synthesizing and experimentally evaluating the top 16 lipids flagged. We identify lipid 119-23, which outperforms established benchmark lipids in transfecting muscle and immune cells in several tissues. This approach facilitates the creation and evaluation of versatile ionizable lipid libraries, advancing the formulation of lipid nanoparticles for precise mRNA delivery.
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Affiliation(s)
- Bowen Li
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada.
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada.
- Princess Margaret Cancer Center, University Health Network, Toronto, Ontario, Canada.
| | - Idris O Raji
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA
| | - Akiva G R Gordon
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Lizhuang Sun
- Department of Statistics, University of Michigan, Ann Arbor, MI, USA
| | - Theresa M Raimondo
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Favour A Oladimeji
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Allen Y Jiang
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Andrew Varley
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Robert S Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA
- Department of Statistics, University of Michigan, Ann Arbor, MI, USA
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Daniel G Anderson
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA.
- Department of Statistics, University of Michigan, Ann Arbor, MI, USA.
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
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Lim DK, Barhoumi A, Wylie RG, Reznor G, Langer RS, Kohane DS. Correction to "Enhanced Photothermal Effect of Plasmonic Nanoparticles Coated with Reduced Graphene Oxide". Nano Lett 2024; 24:1464-1465. [PMID: 38236080 DOI: 10.1021/acs.nanolett.3c05125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
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Stanton AE, Bubnys A, Agbas E, James B, Park DS, Jiang A, Pinals RL, Truong N, Loon A, Staab C, Liu L, Cerit O, Wen HL, Kellis M, Blanchard JW, Langer RS, Tsai LH. Engineered 3D Immuno-Glial-Neurovascular Human Brain Model. bioRxiv 2023:2023.08.15.553453. [PMID: 37645757 PMCID: PMC10461996 DOI: 10.1101/2023.08.15.553453] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Patient-specific, human-based cellular models that integrate biomimetic BBB, immune, and myelinated neuron components are critically needed to enable translationally relevant and accelerated discovery of neurological disease mechanisms and interventions. By engineering a brain-mimicking 3D hydrogel and co-culturing all six major brain cell types derived from patient iPSCs, we have constructed, characterized, and utilized a multicellular integrated brain (miBrain) immuno-glial-neurovascular model with in vivo- like hallmarks. As proof of principle, here we utilized the miBrain to model Alzheimer's Disease pathologies associated with APOE4 genetic risk. APOE4 miBrains differentially exhibit amyloid aggregation, tau phosphorylation, and astrocytic GFAP. Unlike the co-emergent fate specification of glia and neurons in organoids, miBrains integrate independently differentiated cell types in a modular system with unique utility for elucidating cell-type specific contributions to pathogenesis. We here harness this feature to identify that risk factor APOE4 in astrocytes promotes tau pathogenesis and neuronal dysregulation through crosstalk with microglia. One-Sentence Summary A novel patient-specific brain model with BBB, neuronal, immune, and glial components was developed, characterized, and harnessed to model Alzheimer's Disease-associated pathologies and APOE4 genetic risk.
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Bhagchandani SH, Vohidov F, Milling LE, Tong EY, Brown CM, Ramseier ML, Liu B, Fessenden TB, Nguyen HVT, Kiel GR, Won L, Langer RS, Spranger S, Shalek AK, Irvine DJ, Johnson JA. Engineering kinetics of TLR7/8 agonist release from bottlebrush prodrugs enables tumor-focused immune stimulation. Sci Adv 2023; 9:eadg2239. [PMID: 37075115 PMCID: PMC10115420 DOI: 10.1126/sciadv.adg2239] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/16/2023] [Indexed: 05/03/2023]
Abstract
Imidazoquinolines (IMDs), such as resiquimod (R848), are of great interest as potential cancer immunotherapies because of their ability to activate Toll-like receptor 7 (TLR7) and/or TLR8 on innate immune cells. Nevertheless, intravenous administration of IMDs causes severe immune-related toxicities, and attempts to improve their tissue-selective exposure while minimizing acute systemic inflammation have proven difficult. Here, using a library of R848 "bottlebrush prodrugs" (BPDs) that differ only by their R848 release kinetics, we explore how the timing of R848 exposure affects immune stimulation in vitro and in vivo. These studies led to the discovery of R848-BPDs that exhibit optimal activation kinetics to achieve potent stimulation of myeloid cells in tumors and substantial reductions in tumor growth following systemic administration in mouse syngeneic tumor models without any observable systemic toxicity. These results suggest that release kinetics can be tuned at the molecular level to provide safe yet effective systemically administered immunostimulant prodrugs for next-generation cancer immunotherapies.
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Affiliation(s)
- Sachin H. Bhagchandani
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | - Farrukh Vohidov
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Lauren E. Milling
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Evelyn Yuzhou Tong
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Christopher M. Brown
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Michelle L. Ramseier
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Bin Liu
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Timothy B. Fessenden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Hung V.-T. Nguyen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Gavin R. Kiel
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Lori Won
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Robert S. Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
| | - Stefani Spranger
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Alex K. Shalek
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Darrell J. Irvine
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA
| | - Jeremiah A. Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
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Kanelli M, Bardhan NM, Sarmadi M, Alsaiari S, Rothwell WT, Pardeshi A, De Fiesta DC, Mak H, Spanoudaki V, Henning N, Han J, Belcher AM, Langer RS, Jaklenec A. A Machine Learning-optimized system for on demand, pulsatile, photo- and chemo-therapeutic treatment using near-infrared responsive MoS 2 -based microparticles in a breast cancer model. bioRxiv 2023:2023.04.16.536750. [PMID: 37090507 PMCID: PMC10120681 DOI: 10.1101/2023.04.16.536750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Cancer therapy research is of high interest because of the persistence and mortality of the disease and the side effects of traditional therapeutic methods, while often multimodal treatments are necessary based on the patient's needs. The development of less invasive modalities for recurring treatment cycles is thus of critical significance. Herein, a light-activatable microparticle system was developed for localized, pulsatile delivery of anticancer drugs with simultaneous thermal ablation, by applying controlled ON-OFF thermal cycles using near-infrared laser irradiation. The system is composed of poly(caprolactone) microparticles of 200 μm size with incorporated molybdenum disulfide (MoS 2 ) nanosheets as the photothermal agent and hydrophilic doxorubicin or hydrophobic violacein, as model drugs. Upon irradiation the nanosheets heat up to ≥50 °C leading to polymer matrix melting and release of the drug. MoS 2 nanosheets exhibit high photothermal conversion efficiency and allow for application of low power laser irradiation for the system activation. A Machine Learning algorithm was applied to acquire optimal laser operation conditions; 0.4 W/cm 2 laser power at 808 nm, 3-cycle irradiation, for 3 cumulative minutes. In a mouse subcutaneous model of 4T1 triple-negative breast cancer, 25 microparticles were intratumorally administered and after 3-cycle laser treatment the system conferred synergistic phototherapeutic and chemotherapeutic effect. Our on-demand, pulsatile synergistic treatment resulted in increased median survival up to 40 days post start of treatment compared to untreated mice, with complete eradication of the tumors at the primary site. Such a system could have potential for patients in need of recurring cycles of treatment on subcutaneous tumors. GRAPHICAL ABSTRACT
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Kanelli M, Bardhan NM, Sarmadi M, Alsaiari S, Rothwell W, Pardeshi A, Belcher AM, Jaklenec A, Langer RS. Abstract 820: Photo-activatable ON-OFF microparticles for on-demand pulsatile drug delivery in a breast cancer model. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
The ability to treat tumors with high efficacy in a local microenvironment, while mitigating the side effects of systemic toxicity is an area of active investigation. Towards this goal, designing a minimally-invasive local therapeutic modality, with a controlled, pulsatile drug release mechanism is an attractive proposition.
In this study, a near-infrared (NIR) photo-activatable microparticle was developed for localized, pulsatile delivery of encapsulated anticancer drugs into the tumor with simultaneous thermal ablation, with controlled ON-OFF thermal cycles using NIR laser irradiation. The microparticles were fabricated using a poly(caprolactone) (PCL) matrix, containing 2D molybdenum disulfide (MoS2) nanosheets as the NIR-responsive photothermal agent, and doxorubicin or violacein, as hydrophilic and hydrophobic model anticancer drugs, respectively. Cubic microparticles of 200 µm size were fabricated by casting a polymer-MoS2-drug film on PDMS mold with loading efficiency of 2 μg MoS2 per particle, and 0.2-8 μg of drug per particle. A cytotoxicity assay was performed to test the efficacy of the loaded microparticles in reducing the viability of 4T1 murine-derived cell culture, using the ON-OFF laser switch mechanism. In order to select a suitable laser power and duration of treatment for in vivo studies, a Machine Learning algorithm based on a Random Forest classifier was trained, to arrive at the optimal treatment conditions: 0.4-0.5 W/cm2 of laser power at 808 nm, for 3 cumulative minutes of laser irradiation, to reach the target temperature of 50 °C, which activates PCL melting and subsequent drug release.
The effect of pulsatile treatment was studied in vivo in a murine-derived 4T1 subcutaneous mouse model of breast cancer, using this photo-activatable ON-OFF switch mechanism, for up to 3 cycles of laser irradiation. As control groups, tumor only (no treatment), laser only (no drug or microparticle), drug only (no laser or microparticle), microparticles only (no drug or laser), and microparticles with laser (no drug) were studied. The cohorts receiving the photo-activated 3-cyclic treatment for both drugs showed increased median survival up to 40 days post tumor induction, compared to a median survival of 16 days for the control groups. Although one laser cycle was enough to trigger drug release, there was a significant shrinkage in the tumor volume noticed with 3 cycles, with eventual scarring and shedding of the tissue with no evidence of residual tumor at the primary site.
While this cyclic drug release modality is very effective at treating the primary site, subsequent histopathology revealed that the aggressive tumor in some animals had metastasized to the liver and other organs. More work is ongoing to design better targeted approaches to deliver the drug-loaded microparticles to the site of metastatic tumors, to increase the survival prospects of this disease.
Citation Format: Maria Kanelli, Neelkanth M. Bardhan, Morteza Sarmadi, Shahad Alsaiari, William Rothwell, Apurva Pardeshi, Angela M. Belcher, Ana Jaklenec, Robert S. Langer. Photo-activatable ON-OFF microparticles for on-demand pulsatile drug delivery in a breast cancer model [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 820.
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Affiliation(s)
- Maria Kanelli
- 1Massachusetts Institute of Technology (MIT), Cambridge, MA
| | | | | | | | | | | | | | - Ana Jaklenec
- 1Massachusetts Institute of Technology (MIT), Cambridge, MA
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Abstract
Endothelial cells play critical roles in circulatory homeostasis and are also the gateway to the major organs of the body. Dysfunction, injury, and gene expression profiles of these cells can cause, or are caused by, prevalent chronic diseases such as diabetes, cardiovascular disease, and cancer. Modulation of gene expression within endothelial cells could therefore be therapeutically strategic in treating longstanding disease challenges. Lipid nanoparticles (LNP) have emerged as potent, scalable, and tunable carrier systems for delivering nucleic acids, making them attractive vehicles for gene delivery to endothelial cells. Here, we discuss the functions of endothelial cells and highlight some receptors that are upregulated during health and disease. Examples and applications of DNA, mRNA, circRNA, saRNA, siRNA, shRNA, miRNA, and ASO delivery to endothelial cells and their targets are reviewed, as well as LNP composition and morphology, formulation strategies, target proteins, and biomechanical factors that modulate endothelial cell targeting. Finally, we discuss FDA-approved LNPs as well as LNPs that have been tested in clinical trials and their challenges, and provide some perspectives as to how to surmount those challenges.
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Affiliation(s)
- Gary W Liu
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Edward B Guzman
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Nandita Menon
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Strand Therapeutics, MA, 02215, Boston, USA
| | - Robert S Langer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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van der Ven CFT, Tibbitt MW, Conde J, van Mil A, Hjortnaes J, Doevendans PA, Sluijter JPG, Aikawa E, Langer RS. Controlled delivery of gold nanoparticle-coupled miRNA therapeutics via an injectable self-healing hydrogel. Nanoscale 2021; 13:20451-20461. [PMID: 34817483 PMCID: PMC8675028 DOI: 10.1039/d1nr04973a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Differential expression of microRNAs (miRNAs) plays a role in many diseases, including cancer and cardiovascular diseases. Potentially, miRNAs could be targeted with miRNA-therapeutics. Sustained delivery of these therapeutics remains challenging. This study couples miR-mimics to PEG-peptide gold nanoparticles (AuNP) and loads these AuNP-miRNAs in an injectable, shear thinning, self-assembling polymer nanoparticle (PNP) hydrogel drug delivery platform to improve delivery. Spherical AuNPs coated with fluorescently labelled miR-214 are loaded into an HPMC-PEG-b-PLA PNP hydrogel. Release of AuNP/miRNAs is quantified, AuNP-miR-214 functionality is shown in vitro in HEK293 cells, and AuNP-miRNAs are tracked in a 3D bioprinted human model of calcific aortic valve disease (CAVD). Lastly, biodistribution of PNP-AuNP-miR-67 is assessed after subcutaneous injection in C57BL/6 mice. AuNP-miRNA release from the PNP hydrogel in vitro demonstrates a linear pattern over 5 days up to 20%. AuNP-miR-214 transfection in HEK293 results in 33% decrease of Luciferase reporter activity. In the CAVD model, AuNP-miR-214 are tracked into the cytoplasm of human aortic valve interstitial cells. Lastly, 11 days after subcutaneous injection, AuNP-miR-67 predominantly clears via the liver and kidneys, and fluorescence levels are again comparable to control animals. Thus, the PNP-AuNP-miRNA drug delivery platform provides linear release of functional miRNAs in vitro and has potential for in vivo applications.
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Affiliation(s)
- Casper F T van der Ven
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Center of Excellence in Cardiovascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Woman's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston 02115, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
| | - Mark W Tibbitt
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - João Conde
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
- Centre for Toxicogenomics and Human Health, Genetics, Oncology and Human Toxicology, NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
| | - Alain van Mil
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Netherlands Heart Institute, Moreelsepark 1, 3511 EP Utrecht, the Netherlands
| | - Jesper Hjortnaes
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Pieter A Doevendans
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Netherlands Heart Institute, Moreelsepark 1, 3511 EP Utrecht, the Netherlands
| | - Joost P G Sluijter
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Elena Aikawa
- Center of Excellence in Cardiovascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Woman's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston 02115, MA, USA
- Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 3 Blackfan Circle, Boston 02115, MA, USA.
| | - Robert S Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 25 Ames Street, Cambridge 02142, MA, USA.
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Ferber S, Cryer AM, Gorelick N, Tyler B, Brem H, Langer RS, Artzi N. Abstract A27: Training an immuno-army: Exploiting immunoengineering for the treatment of glioblastoma. Cancer Immunol Res 2020. [DOI: 10.1158/2326-6074.tumimm19-a27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Gliomas are the most common solid tumors and the greatest cause of cancer-related deaths among children in the U.S. Treatment for this group of heterogeneous malignancies involves surgery and chemotherapy; however, tumor recurrence is inevitable. Immunotherapy is a treatment modality that can stimulate the intrinsic immune defenses of the body to eliminate tumor cells. This has been challenging for gliomas, though, due to the exclusionary anatomic barriers and the immunologically quiescent environment of the brain. This project aims to develop an injectable hydrogel patch for controlled local delivery of combination immunotherapy directly to the postsurgical formed cavity of the brain to treat residual disease and to prevent tumor recurrence. Using the hydrogel patch, we seek to overcome the delivery and immunosuppressive barriers of the brain by locally releasing, as a programmed regimen, the following immunomodulatory entities: i) C-X-C motif chemokine 10 (CXCL10; to promote T-lymphocyte recruitment), ii), a new generation of programmed death-ligand 1 (PD-L1) inhibitors (to prevent T-cell exhaustion), iii) FMS-like tyrosine kinase 3 ligand (FLT3L; to induce differentiation and expansion of dendritic cells), and iv) a stimulator of interferon genes (STING) agonist (to trigger cross-priming of CD8+ cytotoxic T cells). Our novel technology possesses the flexibility to personalize an array of antigens/adjuvants or other components of immunotherapy and enables the prevention of brain metastasis by creating an immunologically inhospitable setting for circulating tumor cells. As pediatric gliomas are notoriously resistant to treatment, our hydrogel formulation seeks to address an unmet clinical need for more effective therapeutic modalities.
Note:This abstract was not presented at the conference.
Citation Format: Shiran Ferber, Alexander M. Cryer, Noah Gorelick, Betty Tyler, Henry Brem, Robert S. Langer, Natalie Artzi. Training an immuno-army: Exploiting immunoengineering for the treatment of glioblastoma [abstract]. In: Proceedings of the AACR Special Conference on Tumor Immunology and Immunotherapy; 2019 Nov 17-20; Boston, MA. Philadelphia (PA): AACR; Cancer Immunol Res 2020;8(3 Suppl):Abstract nr A27.
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Affiliation(s)
| | | | | | | | - Henry Brem
- 2Johns Hopkins University, Baltimore, MD,
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Mirvakili SM, Broderick K, Langer RS. A New Approach for Microfabrication of Printed Circuit Boards with Ultrafine Traces. ACS Appl Mater Interfaces 2019; 11:35376-35381. [PMID: 31480839 DOI: 10.1021/acsami.9b08761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The advances in micro/nanofabrication techniques have enabled miniaturization of printed circuit boards (PCBs) for various applications such as portable devices, smart sensors, and IoTs, to name a few. PCBs provide electrical connectivity between the components as well as mechanical support. Down-scaling of PCBs is crucial for miniaturization of large systems and devices. Currently, microtraces down to 25 μm can be microfabricated with the current microfabrication processes at an industrial scale. In the present work, we report a new approach for microfabrication of PCBs with trace widths down to 3 μm on commercially available PCB substrates. We used electroplating/electroetching, sputtering, and photolithography to achieve these fine trace sizes. The proposed fabrication technique can be used in microelectronics, system on chip, MEMS, and miniaturized circuits and systems in general.
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Affiliation(s)
- Seyed M Mirvakili
- Langer Lab , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Kurt Broderick
- Microsystems Technology Laboratories , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Robert S Langer
- Langer Lab , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
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12
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Affiliation(s)
- Karine Glinel
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Croix du Sud 1/L7.04.02, Louvain-la-Neuve, 1348, Belgium
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02139, United States
| | - Adam Behrens
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02139, United States
| | - Robert S. Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02139, United States
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02139, United States
| | - Alain M. Jonas
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Croix du Sud 1/L7.04.02, Louvain-la-Neuve, 1348, Belgium
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02139, United States
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13
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Jonas AM, Glinel K, Behrens A, Anselmo AC, Langer RS, Jaklenec A. Controlling the Growth of Staphylococcus epidermidis by Layer-By-Layer Encapsulation. ACS Appl Mater Interfaces 2018; 10:16250-16259. [PMID: 29693369 DOI: 10.1021/acsami.8b01988] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Commensal skin bacteria such as Staphylococcus epidermidis are currently being considered as possible components in skin-care and skin-health products. However, considering the potentially adverse effects of commensal skin bacteria if left free to proliferate, it is crucial to develop methodologies that are capable of maintaining bacteria viability while controlling their proliferation. Here, we encapsulate S. epidermidis in shells of increasing thickness using layer-by-layer assembly, with either a pair of synthetic polyelectrolytes or a pair of oppositely charged polysaccharides. We study the viability of the cells and their delay of growth depending on the composition of the shell, its thickness, the charge of the last deposited layer, and the degree of aggregation of the bacteria which is varied using different coating procedures-among which is a new scalable process that easily leads to large amounts of nonaggregated bacteria. We demonstrate that the growth of bacteria is not controlled by the mechanical properties of the shell but by the bacteriostatic effect of the polyelectrolyte complex, which depends on the shell thickness and charge of its outmost layer, and involves the diffusion of unpaired amine sites through the shell. The lag times of growth are sufficient to prevent proliferation for daily topical applications.
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Affiliation(s)
- Alain M Jonas
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Croix du Sud 1/L7.04.02 , Louvain-la-Neuve 1348 , Belgium
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
| | - Karine Glinel
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Croix du Sud 1/L7.04.02 , Louvain-la-Neuve 1348 , Belgium
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
| | - Adam Behrens
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
| | - Aaron C Anselmo
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Robert S Langer
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research , Massachusetts Institute of Technology , 500 Main Street , Cambridge , Massachusetts 02139 , United States
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14
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Bakh NA, Cortinas AB, Weiss MA, Langer RS, Anderson DG, Gu Z, Dutta S, Strano MS. Erratum: Glucose-responsive insulin by molecular and physical design. Nat Chem 2017; 10:109. [PMID: 29256502 DOI: 10.1038/nchem.2898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This corrects the article DOI: 10.1038/nchem.2857.
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15
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Tong Z, Martyn K, Yang A, Yin X, Mead BE, Joshi N, Sherman NE, Langer RS, Karp JM. Towards a defined ECM and small molecule based monolayer culture system for the expansion of mouse and human intestinal stem cells. Biomaterials 2017; 154:60-73. [PMID: 29120819 DOI: 10.1016/j.biomaterials.2017.10.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 08/12/2017] [Revised: 10/21/2017] [Accepted: 10/22/2017] [Indexed: 01/04/2023]
Abstract
Current ISC culture systems face significant challenges such as animal-derived or undefined matrix compositions, batch-to-batch variability (e.g. Matrigel-based organoid culture), and complexity of assaying cell aggregates such as organoids which renders the research and clinical translation of ISCs challenging. Here, through screening for suitable ECM components, we report a defined, collagen based monolayer culture system that supports the growth of mouse and human intestinal epithelial cells (IECs) enriched for an Lgr5+ population comparable or higher to the levels found in a standard Matrigel-based organoid culture. The system, referred to as the Bolstering Lgr5 Transformational (BLT) Sandwich culture, comprises a collagen IV-coated porous substrate and a collagen I gel overlay which sandwich an IEC monolayer in between. The distinct collagen cues synergistically regulate IEC attachment, proliferation, and Lgr5 expression through maximizing the engagement of distinct cell surface adhesion receptors (i.e. integrin α2β1, integrin β4) and cell polarity. Further, we apply our BLT Sandwich system to identify that the addition of a bone morphogenetic protein (BMP) receptor inhibitor (LDN-193189) improves the expansion of Lgr5-GFP+ cells from mouse small intestinal crypts by nearly 2.5-fold. Notably, the BLT Sandwich culture is capable of expanding human-derived IECs with higher LGR5 mRNA levels than conventional Matrigel culture, providing superior expansion of human LGR5+ ISCs. Considering the key roles Lgr5+ ISCs play in intestinal epithelial homeostasis and regeneration, we envision that our BLT Sandwich culture system holds great potential for understanding and manipulating ISC biology in vitro (e.g. for modeling ISC-mediated gut diseases) or for expanding a large number of ISCs for clinical utility (e.g. for stem cell therapy).
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Affiliation(s)
- Zhixiang Tong
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States
| | - Keir Martyn
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States
| | - Andy Yang
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States
| | - Xiaolei Yin
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States; David H. Koch Institute for Integrative Cancer Research at MIT, United States
| | - Benjamin E Mead
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States; Broad Institute of Harvard and MIT, United States; David H. Koch Institute for Integrative Cancer Research at MIT, United States
| | - Nitin Joshi
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States
| | - Nicholas E Sherman
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States
| | - Robert S Langer
- Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States; Department of Chemical Engineering at MIT, United States; David H. Koch Institute for Integrative Cancer Research at MIT, United States
| | - Jeffrey M Karp
- Division of BioEngineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, United States; Harvard Medical School, United States; Harvard Stem Cell Institute, United States; Harvard - Massachusetts Institute of Technology (MIT) Division of Health Sciences and Technology, United States.
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16
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Yang NJ, Kauke MJ, Sun F, Yang LF, Maass KF, Traxlmayr MW, Yu Y, Xu Y, Langer RS, Anderson DG, Wittrup KD. Cytosolic delivery of siRNA by ultra-high affinity dsRNA binding proteins. Nucleic Acids Res 2017. [PMID: 28641400 PMCID: PMC5570165 DOI: 10.1093/nar/gkx546] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Protein-based methods of siRNA delivery are capable of uniquely specific targeting, but are limited by technical challenges such as low potency or poor biophysical properties. Here, we engineered a series of ultra-high affinity siRNA binders based on the viral protein p19 and developed them into siRNA carriers targeted to the epidermal growth factor receptor (EGFR). Combined in trans with a previously described endosome-disrupting agent composed of the pore-forming protein Perfringolysin O (PFO), potent silencing was achieved in vitro with no detectable cytotoxicity. Despite concerns that excessively strong siRNA binding could prevent the discharge of siRNA from its carrier, higher affinity continually led to stronger silencing. We found that this improvement was due to both increased uptake of siRNA into the cell and improved pharmacodynamics inside the cell. Mathematical modeling predicted the existence of an affinity optimum that maximizes silencing, after which siRNA sequestration decreases potency. Our study characterizing the affinity dependence of silencing suggests that siRNA-carrier affinity can significantly affect the intracellular fate of siRNA and may serve as a handle for improving the efficiency of delivery. The two-agent delivery system presented here possesses notable biophysical properties and potency, and provide a platform for the cytosolic delivery of nucleic acids.
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Affiliation(s)
- Nicole J Yang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Monique J Kauke
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Fangdi Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Lucy F Yang
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Katie F Maass
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Michael W Traxlmayr
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yao Yu
- Protein Analytics, Adimab LLC, Lebanon, NH 03766, USA
| | - Yingda Xu
- Protein Analytics, Adimab LLC, Lebanon, NH 03766, USA
| | - Robert S Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel G Anderson
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - K Dane Wittrup
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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17
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Xu Y, Islam MA, Zope H, Mahmoudi M, Langer RS, Shi J, Zetter BR, Farokhzad OC. Abstract 1231: Restoration of tumor suppression in vivo by systemic delivery of PTEN mRNA nanoparticles. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-1231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
PTEN (phosphatase and tensin homolog on chromosome ten) is one of the most common lost or mutated tumor suppressor genes in human cancers, including ~50% of metastatic castration-resistant prostate cancer (mCRPC). By catalyzing PIP3 dephosphorylation, PTEN negatively regulates the PI3K-AKT-mTOR pathway, which is frequently altered in mCRPC. Reintroduction of functional PTEN for mCRPC treatment has proven difficult. By employing self-assembled lipid-polymer hybrid nanoparticle platforms, we successfully reintroduced PTEN mRNA to PTEN-null prostate cancer cells both in vitro and in vivo. These mRNA-loaded nanoparticles demonstrate high protein expression efficiency, low toxicity and good stability in serum and tumor accumulation. We confirmed that restoration of PTEN in PTEN-null prostate cancer cells inhibits the PI3k-AKT pathway, reduces cell viability and enhances apoptosis in vitro. Systemic delivery of PTEN mRNA-loaded nanoparticles in prostate xenograft tumors results in ~85% inhibition of tumor growth and leads to tumor cell death without toxic side effects in vivo. In summary, this work provides proof of concept of mRNA-based gene therapy for systemic restoration of functional PTEN for tumor suppression in vivo. It represents a novel approach to PI3K-AKT pathway inhibition, with the potential to specifically target cancers with loss of PTEN function.
Citation Format: Yingjie Xu, Mohammad Ariful Islam, Harshal Zope, Morteza Mahmoudi, Robert S. Langer, Jinjun Shi, Bruce R. Zetter, Omid C. Farokhzad. Restoration of tumor suppression in vivo by systemic delivery of PTEN mRNA nanoparticles [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 1231. doi:10.1158/1538-7445.AM2017-1231
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Affiliation(s)
- Yingjie Xu
- 1Boston Children's Hospital, Harvard Medical School, Boston, MA
| | | | - Harshal Zope
- 2Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Morteza Mahmoudi
- 2Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | | | - Jinjun Shi
- 2Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Bruce R. Zetter
- 1Boston Children's Hospital, Harvard Medical School, Boston, MA
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18
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Zwang Y, Jonas O, Chen C, Rinne ML, Doench JG, Piccioni F, Tan L, Huang HT, Wang J, Ham YJ, O'Connell J, Bhola P, Doshi M, Whitman M, Cima M, Letai A, Root DE, Langer RS, Gray N, Hahn WC. Synergistic interactions with PI3K inhibition that induce apoptosis. eLife 2017; 6:e24523. [PMID: 28561737 PMCID: PMC5479695 DOI: 10.7554/elife.24523] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 12/21/2016] [Accepted: 05/30/2017] [Indexed: 12/24/2022] Open
Abstract
Activating mutations involving the PI3K pathway occur frequently in human cancers. However, PI3K inhibitors primarily induce cell cycle arrest, leaving a significant reservoir of tumor cells that may acquire or exhibit resistance. We searched for genes that are required for the survival of PI3K mutant cancer cells in the presence of PI3K inhibition by conducting a genome scale shRNA-based apoptosis screen in a PIK3CA mutant human breast cancer cell. We identified 5 genes (PIM2, ZAK, TACC1, ZFR, ZNF565) whose suppression induced cell death upon PI3K inhibition. We showed that small molecule inhibitors of the PIM2 and ZAK kinases synergize with PI3K inhibition. In addition, using a microscale implementable device to deliver either siRNAs or small molecule inhibitors in vivo, we showed that suppressing these 5 genes with PI3K inhibition induced tumor regression. These observations identify targets whose inhibition synergizes with PI3K inhibitors and nominate potential combination therapies involving PI3K inhibition.
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Affiliation(s)
- Yaara Zwang
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - Oliver Jonas
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States
| | - Casandra Chen
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - Mikael L Rinne
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - John G Doench
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
| | - Federica Piccioni
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
| | - Li Tan
- Department of Cancer Biology, Dana Farber Cancer Institute, Boston, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, United States
| | - Hai-Tsang Huang
- Department of Cancer Biology, Dana Farber Cancer Institute, Boston, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, United States
| | - Jinhua Wang
- Department of Cancer Biology, Dana Farber Cancer Institute, Boston, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, United States
| | - Young Jin Ham
- Department of Cancer Biology, Dana Farber Cancer Institute, Boston, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, United States
| | - Joyce O'Connell
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - Patrick Bhola
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - Mihir Doshi
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - Matthew Whitman
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States
| | - Michael Cima
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States
- Department of Materials Science, Massachusetts Institute of Technology, Cambridge, United States
| | - Anthony Letai
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
| | - David E Root
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
| | - Robert S Langer
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, United States
| | - Nathanael Gray
- Department of Cancer Biology, Dana Farber Cancer Institute, Boston, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, United States
| | - William C Hahn
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, United States
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, United States
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19
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Karinja SJ, Veiseh O, Bernstein J, Akintayo R, Jin J, Dong X, Abadeer A, Kaymakcalan O, Morrison KA, Langer RS, Anderson DG, Spector JA. Abstract 130. Plast Reconstr Surg Glob Open 2017. [PMCID: PMC5417982 DOI: 10.1097/01.gox.0000516649.46212.a5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Ding X, Stewart M, Sharei A, Weaver JC, Langer RS, Jensen KF. High-throughput Nuclear Delivery and Rapid Expression of DNA via Mechanical and Electrical Cell-Membrane Disruption. Nat Biomed Eng 2017; 1. [PMID: 28932622 PMCID: PMC5602535 DOI: 10.1038/s41551-017-0039] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Nuclear transfection of DNA into mammalian cells is challenging yet critical for many biological and medical studies. Here, by combining cell squeezing and electric-field-driven transport in a device that integrates microfluidic channels with constrictions and microelectrodes, we demonstrate nuclear delivery of plasmid DNA within 1 hour after treatment, the most rapid DNA expression in a high-throughput setting (up to millions of cells per minute per device). Passing cells at high speed through microfluidic constrictions smaller than the cell diameter mechanically disrupts the cell membrane, allowing a subsequent electric field to further disrupt the nuclear envelope and drive DNA molecules into the cytoplasm and nucleus. By tracking the localization of the ESCRT-III (endosomal sorting complexes required for transport) protein CHMP4B, we show that the integrity of the nuclear envelope is recovered within 15 minutes of treatment. We also provide insight into subcellular delivery by comparing the performance of the disruption-and-field-enhanced method with those of conventional chemical, electroporation, and manual-injection systems.
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Affiliation(s)
- Xiaoyun Ding
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,The David Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Martin Stewart
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,The David Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Armon Sharei
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,The David Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - James C Weaver
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert S Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,The David Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Klavs F Jensen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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21
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Abstract
Abstract
Advanced drug delivery systems are having an enormous impact on human health. We start by discussing our early research on developing the first controlled release systems for macromolecules and the isolation of angiogenesis inhibitors and how these led to numerous new cancer therapies. New drug delivery technologies including nanoparticles and nanotechnology are now being studied for use treating cancer and other illnesses. We will also discuss novel super long acting oral drug delivery systems as well as ways of developing novel microchips for drug delivery and how they also can be used for designing personalized cancer drug regimens. Finally, we will discuss new approaches for cell therapy based on a novel method of “squeezing” materials into cells.
Citation Format: Robert S. Langer. Advances in drug delivery. [abstract]. In: Proceedings of the AACR Special Conference on Engineering and Physical Sciences in Oncology; 2016 Jun 25-28; Boston, MA. Philadelphia (PA): AACR; Cancer Res 2017;77(2 Suppl):Abstract nr IA02.
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23
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Hong AL, Tseng YY, Cowley GS, Jonas O, Cheah JH, Kynnap BD, Doshi MB, Oh C, Meyer SC, Church AJ, Gill S, Bielski CM, Keskula P, Imamovic A, Howell S, Kryukov GV, Clemons PA, Tsherniak A, Vazquez F, Crompton BD, Shamji AF, Rodriguez-Galindo C, Janeway KA, Roberts CWM, Stegmaier K, van Hummelen P, Cima MJ, Langer RS, Garraway LA, Schreiber SL, Root DE, Hahn WC, Boehm JS. Integrated genetic and pharmacologic interrogation of rare cancers. Nat Commun 2016; 7:11987. [PMID: 27329820 PMCID: PMC4917959 DOI: 10.1038/ncomms11987] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/18/2016] [Indexed: 02/06/2023] Open
Abstract
Identifying therapeutic targets in rare cancers remains challenging due to the paucity of established models to perform preclinical studies. As a proof-of-concept, we developed a patient-derived cancer cell line, CLF-PED-015-T, from a paediatric patient with a rare undifferentiated sarcoma. Here, we confirm that this cell line recapitulates the histology and harbours the majority of the somatic genetic alterations found in a metastatic lesion isolated at first relapse. We then perform pooled CRISPR-Cas9 and RNAi loss-of-function screens and a small-molecule screen focused on druggable cancer targets. Integrating these three complementary and orthogonal methods, we identify CDK4 and XPO1 as potential therapeutic targets in this cancer, which has no known alterations in these genes. These observations establish an approach that integrates new patient-derived models, functional genomics and chemical screens to facilitate the discovery of targets in rare cancers.
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Affiliation(s)
- Andrew L. Hong
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Yuen-Yi Tseng
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Glenn S. Cowley
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Oliver Jonas
- Koch Institute for Integrative Cancer Research at MIT, 500 Main Street, Cambridge, Massachusetts 02139, USA
| | - Jaime H. Cheah
- Koch Institute for Integrative Cancer Research at MIT, 500 Main Street, Cambridge, Massachusetts 02139, USA
| | - Bryan D. Kynnap
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Mihir B. Doshi
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Coyin Oh
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Stephanie C. Meyer
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Alanna J. Church
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
| | - Shubhroz Gill
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Craig M. Bielski
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Paula Keskula
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Alma Imamovic
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Sara Howell
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Gregory V. Kryukov
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
- Brigham and Women's Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA
| | - Paul A. Clemons
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Aviad Tsherniak
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Francisca Vazquez
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Brian D. Crompton
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Alykhan F. Shamji
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Carlos Rodriguez-Galindo
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Katherine A. Janeway
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Charles W. M. Roberts
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Kimberly Stegmaier
- Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - Paul van Hummelen
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
| | - Michael J. Cima
- Koch Institute for Integrative Cancer Research at MIT, 500 Main Street, Cambridge, Massachusetts 02139, USA
| | - Robert S. Langer
- Koch Institute for Integrative Cancer Research at MIT, 500 Main Street, Cambridge, Massachusetts 02139, USA
| | - Levi A. Garraway
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
- Brigham and Women's Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA
| | - Stuart L. Schreiber
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA
| | - David E. Root
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
| | - William C. Hahn
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, Massachusetts 02215, USA
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
- Brigham and Women's Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA
| | - Jesse S. Boehm
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, USA
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24
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Lee Y, Xu C, Sebastin M, Lee A, Holwell N, Xu C, Miranda Nieves D, Mu L, Langer RS, Lin C, Karp JM. Bioinspired Nanoparticulate Medical Glues for Minimally Invasive Tissue Repair. Adv Healthc Mater 2015; 4:2587-96. [PMID: 26227833 DOI: 10.1002/adhm.201500419] [Citation(s) in RCA: 24] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 06/24/2015] [Indexed: 01/12/2023]
Abstract
Delivery of tissue glues through small-bore needles or trocars is critical for sealing holes, affixing medical devices, or attaching tissues together during minimally invasive surgeries. Inspired by the granule-packaged glue delivery system of sandcastle worms, a nanoparticulate formulation of a viscous hydrophobic light-activated adhesive based on poly(glycerol sebacate)-acrylate is developed. Negatively charged alginate is used to stabilize the nanoparticulate surface to significantly reduce its viscosity and to maximize injectability through small-bore needles. The nanoparticulate glues can be concentrated to ≈30 w/v% dispersions in water that remain localized following injection. With the trigger of a positively charged polymer (e.g., protamine), the nanoparticulate glues can quickly assemble into a viscous glue that exhibits rheological, mechanical, and adhesive properties resembling the native poly(glycerol sebacate)-acrylate based glues. This platform should be useful to enable the delivery of viscous glues to augment or replace sutures and staples during minimally invasive procedures.
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Affiliation(s)
- Yuhan Lee
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Chenjie Xu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Monisha Sebastin
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Albert Lee
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Nathan Holwell
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Calvin Xu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - David Miranda Nieves
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Luye Mu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Robert S. Langer
- Harvard-Massachusetts Institute of Technology; Division of HealthSciences and Technology; Institute for Medical Engineering & Science; Massachusetts Institute of Technology; David H. Koch Institute for Integrative Cancer Research; Massachusetts Institute of Technology; Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Charles Lin
- Wellman center for Photomedicine; Massachusetts General Hospital; Harvard Medical School; Boston MA 02140 USA
| | - Jeffrey M. Karp
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
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25
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Lee Y, Xu C, Sebastin M, Lee A, Holwell N, Xu C, Miranda Nieves D, Mu L, Langer RS, Lin C, Karp JM. Medical Adhesives: Bioinspired Nanoparticulate Medical Glues for Minimally Invasive Tissue Repair (Adv. Healthcare Mater. 16/2015). Adv Healthc Mater 2015. [DOI: 10.1002/adhm.201570092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuhan Lee
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Chenjie Xu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Monisha Sebastin
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Albert Lee
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Nathan Holwell
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Calvin Xu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - David Miranda Nieves
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Luye Mu
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
| | - Robert S. Langer
- Harvard-Massachusetts Institute of Technology; Division of HealthSciences and Technology; Institute for Medical Engineering & Science; Massachusetts Institute of Technology; David H. Koch Institute for Integrative Cancer Research; Massachusetts Institute of Technology; Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Charles Lin
- Wellman center for Photomedicine; Massachusetts General Hospital; Harvard Medical School; Boston MA 02140 USA
| | - Jeffrey M. Karp
- Department of Medicine; Center for Regenerative Therapeutics; Brigham and Women's Hospital; Harvard Medical School; Harvard Stem Cell Institute; Harvard-MIT Division of Health Science and Technology; 65 Landsdowne Street Cambridge MA 02139 USA
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26
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Clark DS, Karube I, Sode K, Bülow L, Brüggemann O, Lowe CR, Poulsen PB, Langer RS. Klaus Mosbach tribute. Biotechnol Bioeng 2015; 112:645-7. [PMID: 25599981 DOI: 10.1002/bit.25507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 11/21/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Douglas S Clark
- Editor-in-Chief, Gilbert Newton Lewis Professor, Dean of College of Chemistry, University of California, Berkeley, CA, USA
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27
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Abstract
The targeted delivery of therapeutic cargos using noninvasive stimuli has the potential to improve efficacy and reduce off-target effects (toxicity). Here, we demonstrate a targeting mechanism that uses a thermoresponsive copolymer to mask a peptide ligand that binds a widely distributed receptor (integrin β1) on the surface of silica core-gold shell nanoparticles. The nanoparticles convert NIR light into heat, which causes the copolymer to collapse, exposing the ligand peptide, allowing cell binding. The use of NIR light could allow targeting of plasmonic nanoparticles deep within tissues. This approach could be extended to a variety of applications including photothermal therapy and drug delivery.
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Affiliation(s)
- Aoune Barhoumi
- Laboratory for Biomaterials and Drug Delivery, §Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School , 300 Longwood Avenue, Boston, Massachusetts 02115, United States
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28
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Cima MJ, Lee H, Daniel K, Tanenbaum LM, Mantzavinou A, Spencer KC, Ong Q, Sy JC, Santini J, Schoellhammer CM, Blankschtein D, Langer RS. Single compartment drug delivery. J Control Release 2014; 190:157-71. [PMID: 24798478 DOI: 10.1016/j.jconrel.2014.04.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [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: 02/19/2014] [Revised: 04/18/2014] [Accepted: 04/25/2014] [Indexed: 02/06/2023]
Abstract
Drug design is built on the concept that key molecular targets of disease are isolated in the diseased tissue. Systemic drug administration would be sufficient for targeting in such a case. It is, however, common for enzymes or receptors that are integral to disease to be structurally similar or identical to those that play important biological roles in normal tissues of the body. Additionally, systemic administration may not lead to local drug concentrations high enough to yield disease modification because of rapid systemic metabolism or lack of sufficient partitioning into the diseased tissue compartment. This review focuses on drug delivery methods that physically target drugs to individual compartments of the body. Compartments such as the bladder, peritoneum, brain, eye and skin are often sites of disease and can sometimes be viewed as "privileged," since they intrinsically hinder partitioning of systemically administered agents. These compartments have become the focus of a wide array of procedures and devices for direct administration of drugs. We discuss the rationale behind single compartment drug delivery for each of these compartments, and give an overview of examples at different development stages, from the lab bench to phase III clinical trials to clinical practice. We approach single compartment drug delivery from both a translational and a technological perspective.
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Affiliation(s)
- Michael J Cima
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Materials Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Heejin Lee
- TARIS Biomedical, Inc., Lexington, MA 02421, USA
| | - Karen Daniel
- TARIS Biomedical, Inc., Lexington, MA 02421, USA
| | - Laura M Tanenbaum
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Aikaterini Mantzavinou
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kevin C Spencer
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Materials Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Qunya Ong
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jay C Sy
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - John Santini
- On Demand Therapeutics, Inc., Menlo Park, CA 94025, USA
| | - Carl M Schoellhammer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel Blankschtein
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert S Langer
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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29
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Ilyinskii PO, Roy CJ, O'Neil CP, Browning EA, Pittet LA, Altreuter DH, Alexis F, Tonti E, Shi J, Basto PA, Iannacone M, Radovic-Moreno AF, Langer RS, Farokhzad OC, von Andrian UH, Johnston LPM, Kishimoto TK. Adjuvant-carrying synthetic vaccine particles augment the immune response to encapsulated antigen and exhibit strong local immune activation without inducing systemic cytokine release. Vaccine 2014; 32:2882-95. [PMID: 24593999 PMCID: PMC4059049 DOI: 10.1016/j.vaccine.2014.02.027] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Augmentation of immunogenicity can be achieved by particulate delivery of an antigen and by its co-administration with an adjuvant. However, many adjuvants initiate strong systemic inflammatory reactions in vivo, leading to potential adverse events and safety concerns. We have developed a synthetic vaccine particle (SVP) technology that enables co-encapsulation of antigen with potent adjuvants. We demonstrate that co-delivery of an antigen with a TLR7/8 or TLR9 agonist in synthetic polymer nanoparticles results in a strong augmentation of humoral and cellular immune responses with minimal systemic production of inflammatory cytokines. In contrast, antigen encapsulated into nanoparticles and admixed with free TLR7/8 agonist leads to lower immunogenicity and rapid induction of high levels of inflammatory cytokines in the serum (e.g., TNF-α and IL-6 levels are 50- to 200-fold higher upon injection of free resiquimod (R848) than of nanoparticle-encapsulated R848). Conversely, local immune stimulation as evidenced by cellular infiltration of draining lymph nodes and by intranodal cytokine production was more pronounced and persisted longer when SVP-encapsulated TLR agonists were used. The strong local immune activation achieved using a modular self-assembling nanoparticle platform markedly enhanced immunogenicity and was equally effective whether antigen and adjuvant were co-encapsulated in a single nanoparticle formulation or co-delivered in two separate nanoparticles. Moreover, particle encapsulation enabled the utilization of CpG oligonucleotides with the natural phosphodiester backbone, which are otherwise rapidly hydrolyzed by nucleases in vivo. The use of SVP may enable clinical use of potent TLR agonists as vaccine adjuvants for indications where cellular immunity or robust humoral responses are required.
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Affiliation(s)
| | | | | | | | | | | | - Frank Alexis
- Laboratory of Nanomedicine and Biomaterials, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Elena Tonti
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Jinjun Shi
- Laboratory of Nanomedicine and Biomaterials, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Pamela A Basto
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Matteo Iannacone
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Aleksandar F Radovic-Moreno
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Robert S Langer
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02139, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Omid C Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Ulrich H von Andrian
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
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30
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Langer RS. Corrigendum: Guest Editorial: Prologue. Isr J Chem 2013. [DOI: 10.1002/ijch.201390014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Langer RS. Guest Editorial: Prologue. Isr J Chem 2013. [DOI: 10.1002/ijch.201310009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Lim DK, Barhoumi A, Wylie RG, Reznor G, Langer RS, Kohane DS. Enhanced photothermal effect of plasmonic nanoparticles coated with reduced graphene oxide. Nano Lett 2013; 13:4075-9. [PMID: 23899267 DOI: 10.1021/nl4014315] [Citation(s) in RCA: 173] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report plasmonic gold nanoshells and nanorods coated with reduced graphene oxide that produce an enhanced photothermal effect when stimulated by near-infrared (NIR) light. Electrostatic interactions between nanosized graphene oxide and gold nanoparticles followed by in situ chemical reduction generated reduced graphene oxide-coated nanoparticles; the coating was demonstrated using Raman and HR-TEM. Reduced graphene oxide-coated gold nanoparticles showed enhanced photothermal effect compared to noncoated or nonreduced graphene oxide-coated gold nanoparticles. Reduced graphene oxide-coated gold nanoparticles killed cells more rapidly than did noncoated or nonreduced graphene oxide-coated gold nanoparticles.
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Affiliation(s)
- Dong-Kwon Lim
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School , 300 Longwood Avenue, Boston, Massachusetts 02115, United States
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33
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Gu M, Vegas AJ, Anderson DG, Langer RS, Kilduff JE, Belfort G. Combinatorial synthesis with high throughput discovery of protein-resistant membrane surfaces. Biomaterials 2013; 34:6133-8. [PMID: 23706542 PMCID: PMC3957435 DOI: 10.1016/j.biomaterials.2013.04.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [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: 04/14/2013] [Accepted: 04/24/2013] [Indexed: 11/21/2022]
Abstract
Using combinatorial methods, we synthesized a series of new vinyl amide monomers and graft-polymerized them to light-sensitive poly(ether sulfone) (PES) porous films for protein resistance. To increase the discovery rate and statistical confidence, we developed high throughput surface modification methods (HTP) that allow synthesis, screening and selection of desirable monomers from a large library in a relatively short time (days). A series of amide monomers were synthesized by amidation of methacryloyl chloride with amines and grafted onto commercial poly(ether sulfone) (PES) membranes using irradiation from atmospheric pressure plasma (APP). The modified PES membrane surfaces were then tested and screened for static protein adhesion using HTP. Hydroxyl amide monomers N-(3-hydroxypropyl)methacrylamide (A3), N-(4-hydroxybutyl)methacrylamide (A4), and N-(4-hydroxybutyl)methacrylamide (A6), ethylene glycol (EG) monomer N-(3-methoxypropyl)methacrylamide (A7), and N-(2-(dimethylamino)ethyl)-N-methylmethacrylamide (A8), and N-(2-(diethylamino)ethyl)-N-methylmethacrylamide (A9) all terminated with tertiary amines and were shown to have protein resistance. The PES membranes modified with these monomers exhibited both low protein adhesion (i.e. membrane plugging or fouling) and high flux. Their performance is comparable with previously identified best performing PEG and zwitterionic monomers, i.e. the so-called gold-standard for protein resistance. Combining a Hansen solubility parameter (HSP) analysis of the amide monomers and the HTP filtration results, we conclude that monomer solubility in water correlates with protein-resistant surfaces, presumably through its effects on surface-water interactions.
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Affiliation(s)
- Minghao Gu
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
| | - Arturo J. Vegas
- Department of Chemical Engineering, Division of Health Science and Technology, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel G. Anderson
- Department of Chemical Engineering, Division of Health Science and Technology, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert S. Langer
- Department of Chemical Engineering, Division of Health Science and Technology, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - James E. Kilduff
- Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
| | - Georges Belfort
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
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34
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Gu Z, Aimetti AA, Wang Q, Dang TT, Zhang Y, Veiseh O, Cheng H, Langer RS, Anderson DG. Injectable nano-network for glucose-mediated insulin delivery. ACS Nano 2013; 7:4194-201. [PMID: 23638642 PMCID: PMC4107450 DOI: 10.1021/nn400630x] [Citation(s) in RCA: 303] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Diabetes mellitus, a disorder of glucose regulation, is a global burden affecting 366 million people across the world. An artificial "closed-loop" system able to mimic pancreas activity and release insulin in response to glucose level changes has the potential to improve patient compliance and health. Herein we develop a glucose-mediated release strategy for the self-regulated delivery of insulin using an injectable and acid-degradable polymeric network. Formed by electrostatic interaction between oppositely charged dextran nanoparticles loaded with insulin and glucose-specific enzymes, the nanocomposite-based porous architecture can be dissociated and subsequently release insulin in a hyperglycemic state through the catalytic conversion of glucose into gluconic acid. In vitro insulin release can be modulated in a pulsatile profile in response to glucose concentrations. In vivo studies validated that these formulations provided improved glucose control in type 1 diabetic mice subcutaneously administered with a degradable nano-network. A single injection of the developed nano-network facilitated stabilization of the blood glucose levels in the normoglycemic state (<200 mg/dL) for up to 10 days.
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Affiliation(s)
- Zhen Gu
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, North Carolina 27695, United States
- Eshelman School of Pharmacy, Molecular Pharmaceutics Division, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Alex A. Aimetti
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
| | - Qun Wang
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Tram T. Dang
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Yunlong Zhang
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
| | - Omid Veiseh
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
| | - Hao Cheng
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Robert S. Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
- Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Daniel G. Anderson
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
- Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Address correspondence to
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35
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Cohen-Karni T, Jeong KJ, Tsui JH, Reznor G, Mustata M, Wanunu M, Graham A, Marks C, Bell DC, Langer RS, Kohane DS. Nanocomposite gold-silk nanofibers. Nano Lett 2012; 12:5403-6. [PMID: 22928701 PMCID: PMC3468663 DOI: 10.1021/nl302810c] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Cell-biomaterial interactions can be controlled by modifying the surface chemistry or nanotopography of the material, to induce cell proliferation and differentiation if desired. Here we combine both approaches in forming silk nanofibers (SNFs) containing gold nanoparticles (AuNPs) and subsequently chemically modifying the fibers. Silk fibroin mixed with gold seed nanoparticles was electrospun to form SNFs doped with gold seed nanoparticles (SNF(seed)). Following gold reduction, there was a 2-fold increase in particle diameter confirmed by the appearance of a strong absorption peak at 525 nm. AuNPs were dispersed throughout the AuNP-doped silk nanofibers (SNFs(Au)). The Young's modulus of the SNFs(Au) was almost 70% higher than that of SNFs. SNFs(Au) were modified with the arginine-glycine-aspartic acid (RGD) peptide. Human mesenchymal stem cells that were cultured on RGD-modified SNF(Au) had a more than 2-fold larger cell area compared to the cells cultured on bare SNFs; SNF(Au) also increased cell size. This approach may be used to alter the cell-material interface in tissue engineering and other applications.
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Affiliation(s)
- Tzahi Cohen-Karni
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
| | - Kyung Jae Jeong
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
| | - Jonathan H. Tsui
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
| | - Gally Reznor
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
| | - Mirela Mustata
- Department of Physics, Dana Research Center, Northeastern University, Boston, Massachusetts 02115, USA
| | - Meni Wanunu
- Department of Physics, Dana Research Center, Northeastern University, Boston, Massachusetts 02115, USA
| | - Adam Graham
- Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138
| | - Carolyn Marks
- Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138
| | - David C. Bell
- School of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02138, USA
- Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138
| | - Robert S. Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Daniel S. Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA
- Corresponding authors
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36
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Abstract
Since its inception more than a decade ago, the field of short interfering RNA (siRNA) therapeutics has demonstrated potential in the treatment of a wide variety of diseases. The power behind RNA interference (RNAi) therapy lies in its ability to specifically silence target genes of interest. As more biological data have become available, it has become evident that, in addition to mediating RNAi, siRNA molecules have the potential to potently induce the innate immune system. One of the significant challenges facing the field today is the differentiation between therapeutic effects caused by target-specific, RNAi-mediated gene silencing and those caused by nonspecific stimulation of the innate immune system. Unless appropriate experimental measures are taken to control for RNA-induced immunostimulation, genetic manipulation can be confused with immune activation. This review attempts to provide an accessible background in siRNA-relevant immunology and to highlight the ways in which siRNA can be engineered to avoid or provoke an innate immune response.
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Affiliation(s)
- Kathryn A Whitehead
- The David H. Koch Institute for Integrated Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.
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37
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Urbanska AM, Karagiannis ED, Guajardo G, Langer RS, Anderson DG. Therapeutic effect of orally administered microencapsulated oxaliplatin for colorectal cancer. Biomaterials 2012; 33:4752-61. [PMID: 22472433 DOI: 10.1016/j.biomaterials.2012.03.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 03/06/2012] [Indexed: 12/30/2022]
Abstract
Colorectal cancer is a significant source of morbidity and mortality in the United States and other Western countries. Oral delivery of therapeutics remains the most patient accepted form of medication. The development of an oral delivery formulation for local delivery of chemotherapeutics in the gastrointestinal tract can potentially alleviate the adverse side effects including systemic cytotoxicity, as well as focus therapy to the lesions. Here we develop an oral formulation of the chemotherapeutic drug oxaliplatin for the treatment of colorectal cancer. Oxaliplatin was encapsulated in pH sensitive, mucoadhesive chitosan-coated alginate microspheres. The microparticles were formulated to release the chemotherapeutics after passing through the acidic gastric environment thus targeting the intestinal tract. In vivo, these particles substantially reduced the tumor burden in an orthotopic mouse model of colorectal cancer, and reduced mortality.
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Affiliation(s)
- Aleksandra M Urbanska
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
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38
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Yaszemski MJ, Payne RG, Hayes WC, Langer RS, Aufdemorte TB, Mikos AG. The ingrowth of new bone tissue and initial mechanical properties of a degrading polymeric composite scaffold. ACTA ACUST UNITED AC 2011; 1:41-52. [PMID: 19877914 DOI: 10.1089/ten.1995.1.41] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Trabecular bone deficiency causes a dilemma at surgery in a variety of clinical situations, including trauma, tumor resection, and reconstruction. A synthetic material to replace trabecular bone would be biocompatible, provide temporary mechanical strength to the reconstructed region, and serve as a scaffold upon which new bone could grow (i.e., osteoconduction). In addition, it should serve as a carrier for osteoinductive biomolecules, degrade into nontoxic materials that the body can excrete via normal metabolic pathways, and allow the new bone to remodel along lines of local stress. A particulate filled composite based on an unsaturated linear polyester was designed as a candidate material for this application. The components are mixed with a monomer that cross links the double bonds of the unsaturated polyester. Degradation occurs via hydrolytic degradation of the backbone polymer's ester linkages. This strategy of prepolymer synthesis via condensation polymerization in the laboratory followed by cross linking the unsaturated prepolymer via radical polymerization at surgery offers design flexibility. The radical polymerization allows curing during surgery to facilitate reconstruction of various shaped defects. The laboratory synthesis of the prepolymer allows alterations of its composition and physical properties to effect desired properties in the resulting composite. This study investigates the effect of several composite material formulations on the in vitro mechanical properties and the associated in vivo histologic characteristics of the resulting material. The prepolymer molecular weight, presence of a leachable salt, and amount of cross linking monomer had strong effects on the resulting strength and modulus of the composite. These strengths were on the order of 5 MPa, a magnitude appropriate for consideration of the material as a temporary trabecular bone substitute. The in vivo studies in a rat proximal tibia model demonstrated progressive growth of new bone against the receding surface of the degrading material, and ingrowth of new bone trabeculae into the interior of the degrading specimen. The specimen was also well integrated with the surrounding bone, with no internal fibrosis. There was an absence of a foreign body inflammatory response to the presence of this material over a 5-week time span. This material may thus be an attractive candidate for temporary replacement of trabecular bone, facilitating both osteoconduction and osteoinduction.
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Affiliation(s)
- M J Yaszemski
- Department of Orthopaedic Surgery, Wilford Hall Medical Center, Lackland Air Force Base, San Antonio. Texas., Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
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39
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Whitehead KA, Sahay G, Li GZ, Love KT, Alabi CA, Ma M, Zurenko C, Querbes W, Langer RS, Anderson DG. Synergistic silencing: combinations of lipid-like materials for efficacious siRNA delivery. Mol Ther 2011; 19:1688-94. [PMID: 21750531 DOI: 10.1038/mt.2011.141] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Despite the promise of RNA interference (RNAi) therapeutics, progress toward the clinic has been slowed by the difficulty of delivering short interfering RNA (siRNA) into cellular targets within the body. Nearly all siRNA delivery vehicles developed to date employ a single cationic or ionizable material. In order to increase the material space available for development of siRNA delivery therapeutics, this study examined the possibility of using binary combinations of ionizable lipid-like materials to synergistically achieve gene silencing. Interestingly, it was found that ineffective single lipid-like materials could be formulated together in a single delivery vehicle to induce near-complete knockdown of firefly luciferase and factor VII in HeLa cells and in mice, respectively. Microscopy experiments suggested that synergistic action resulted when combining materials that respectively mediated cellular uptake and endosomal escape, two important steps in the delivery process. Together, the data indicate that formulating lipid-like materials in combination can significantly improve siRNA delivery outcomes while increasing the material space available for therapeutic development. It is anticipated that this binary formulation strategy could be applicable to any siRNA delivery material in any target cell population that utilizes the two-step endosomal delivery pathway.
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Affiliation(s)
- Kathryn A Whitehead
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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40
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Wang J, Bettinger CJ, Langer RS, Borenstein JT. Biodegradable microfluidic scaffolds for tissue engineering from amino alcohol-based poly(ester amide) elastomers. Organogenesis 2011; 6:212-6. [PMID: 21220957 DOI: 10.4161/org.6.4.12909] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Biodegradable polymers with high mechanical strength, flexibility and optical transparency, optimal degradation properties and biocompatibility are critical to the success of tissue engineered devices and drug delivery systems. Most biodegradable polymers suffer from a short half life due to rapid degradation upon implantation, exceedingly high stiffness, and limited ability to functionalize the surface with chemical moieties. This work describes the fabrication of microfluidic networks from poly(ester amide), poly(1,3-diamino-2-hydroxypropane-co-polyol sebacate) (APS), a recently developed biodegradable elastomeric poly(ester amide). Microfluidic scaffolds constructed from APS exhibit a much lower Young's Modulus and a significantly longer degradation half-life than those of previously reported systems. The device is fabricated using a modified replica-molding technique, which is rapid, inexpensive, reproducible, and scalable, making the approach ideal for both rapid prototyping and manufacturing of tissue engineering scaffolds.
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Affiliation(s)
- Jane Wang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
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41
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Abstract
The development of tools and processes used to fabricate, measure, and image nanoscale objects has lead to a wide range of work devoted to producing sensors that interact with extremely small numbers (or an extremely small concentration) of analyte molecules. These advances are particularly exciting in the context of biosensing, where the demands for low concentration detection and high specificity are great. Nanoscale biosensors, or nanobiosensors, provide researchers with an unprecedented level of sensitivity, often to the single molecule level. The use of biomolecule-functionalized surfaces can dramatically boost the specificity of the detection system, but can also yield reproducibility problems and increased complexity. Several nanobiosensor architectures based on mechanical devices, optical resonators, functionalized nanoparticles, nanowires, nanotubes, and nanofibers have been demonstrated in the lab. As nanobiosensor technology becomes more refined and reliable, it is likely it will eventually make its way from the lab to the clinic, where future lab-on-a-chip devices incorporating an array of nanobiosensors could be used for rapid screening of a wide variety of analytes at low cost using small samples of patient material.
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Affiliation(s)
- Leon M Bellan
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
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42
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Bellan LM, Wu D, Langer RS. Current trends in nanobiosensor technology. Wiley Interdiscip Rev Nanomed Nanobiotechnol 2011. [PMID: 21391305 DOI: 10.1002/wnan.v3.310.1002/wnan.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The development of tools and processes used to fabricate, measure, and image nanoscale objects has lead to a wide range of work devoted to producing sensors that interact with extremely small numbers (or an extremely small concentration) of analyte molecules. These advances are particularly exciting in the context of biosensing, where the demands for low concentration detection and high specificity are great. Nanoscale biosensors, or nanobiosensors, provide researchers with an unprecedented level of sensitivity, often to the single molecule level. The use of biomolecule-functionalized surfaces can dramatically boost the specificity of the detection system, but can also yield reproducibility problems and increased complexity. Several nanobiosensor architectures based on mechanical devices, optical resonators, functionalized nanoparticles, nanowires, nanotubes, and nanofibers have been demonstrated in the lab. As nanobiosensor technology becomes more refined and reliable, it is likely it will eventually make its way from the lab to the clinic, where future lab-on-a-chip devices incorporating an array of nanobiosensors could be used for rapid screening of a wide variety of analytes at low cost using small samples of patient material.
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Affiliation(s)
- Leon M Bellan
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
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43
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Abstract
AbstractThin films of polypyrrole were synthesized using both chemical oxidative and electrochemical methods. The resulting oxidized films were characterized by UV/VIS spectroscopy, contact angle and conductivity measurements. In vitro studies suggest that extracellular matrix molecules, such as fibronectin, adsorb efficiently onto polypyrrole thin films and that 3T3 Balb/c mouse fibroblasts attach and spread normally on polypyrrole.
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44
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Scott AW, Tyler BM, Masi BC, Upadhyay UM, Patta YR, Grossman R, Basaldella L, Langer RS, Brem H, Cima MJ. Intracranial microcapsule drug delivery device for the treatment of an experimental gliosarcoma model. Biomaterials 2011; 32:2532-9. [PMID: 21220172 DOI: 10.1016/j.biomaterials.2010.12.020] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Accepted: 12/14/2010] [Indexed: 11/17/2022]
Abstract
Controlled-release drug delivery systems are capable of treating debilitating diseases, including cancer. Brain cancer, in particular glioblastoma multiforme (GBM), is an extremely invasive cancer with a dismal prognosis. The use of drugs capable of crossing the blood-brain barrier has shown modest prolongation in patient survival, but not without unsatisfactory systemic, dose-limiting toxicity. Among the reasons for this improvement include a better understanding of the challenges of delivery of effective agents directly to the brain tumor site. The combination of carmustine delivered by biodegradable polyanhydride wafers (Gliadel(®)), with the systemic alkylating agent, temozolomide, allows much higher effective doses of the drug while minimizing the systemic toxicity. We have previously shown that locally delivering these two drugs leads to further improvement in survival in experimental models. We postulated that microcapsule devices capable of releasing temozolomide would increase the therapeutic capability of this approach. A biocompatible drug delivery microcapsule device for the intracranial delivery of temozolomide is described. Drug release profiles from these microcapsules can be modulated based on the physical chemistry of the drug and the dimensions of the release orifices in these devices. The drug released from the microcapsules in these experiments was the clinically utilized chemotherapeutic agent, temozolomide. In vitro studies were performed in order to test the function, reliability, and drug release kinetics of the devices. The efficacy of the temozolomide-filled microcapsules was tested in an intracranial experimental rodent gliosarcoma model. Immunohistochemical analysis of tissue for evidence of DNA strand breaks via terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay was performed. The experimental release curves showed mass flow rates of 36 μg/h for single-orifice devices and an 88 μg/h mass flow rate for multiple-orifice devices loaded with temozolomide. In vivo efficacy results showed that localized intracranial delivery of temozolomide from microcapsule devices was capable of prolonging animal survival and may offer a novel form of treatment for brain tumors.
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Affiliation(s)
- Alexander W Scott
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
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45
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Abstract
Surface wrinkles are interesting since they form spontaneously into well-defined patterns. The mechanism of formation is well-studied and is associated with the development of a critical compressive stress that induces the elastic instability. In this work, we demonstrate surface wrinkles that dynamically change in response to a stimulus can improve interfacial adhesion with a hydrogel surface through the dynamic evolution of the wrinkle morphology. We observe that this control is related to the local pinning of the crack separation pathway facilitated by the surface wrinkles during debonding, which is dependent on the contact time with the hydrogel.
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Affiliation(s)
- Edwin P Chan
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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46
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Pritchard CD, Arnér KM, Langer RS, Ghosh FK. Retinal transplantation using surface modified poly(glycerol-co-sebacic acid) membranes. Biomaterials 2010; 31:7978-84. [PMID: 20656341 DOI: 10.1016/j.biomaterials.2010.07.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/04/2010] [Indexed: 11/19/2022]
Abstract
In retinal transplantation experiments it is hypothesized that remaining diseased photoreceptor cells in the host retina and inner retinal cells in transplants physically obstruct the development of graft-host neuronal contacts which are required for vision. Recently, we developed methods for the isolation of donor photoreceptor layers in vitro, and the selective removal of host photoreceptors in vivo using biodegradable elastomeric membranes composed of poly(glycerol-co-sebacic acid) (PGS). We also coated PGS membranes with electrospun nanofibers, composed of laminin and poly(epsilon-caprolactone) (PCL), to promote attachment of embryonic retinal explants, allowing the resulting composites to be handled surgically as a single entity. Here, we report subretinal transplantation of these composites into adult porcine eyes. In hematoxylin and eosin stained sections of composite explants after 5-7 days in vitro, excellent fusion of retinas and biomaterial membranes was noted, with the immature retinal components showing laminated as well as folded and rosetted areas. The composite grafts could be transplanted in all cases and, 3 months after surgery, eyes displayed clear media, attached retinas and the grafts located subretinally. Histological examination revealed that the biomaterial membrane had degraded without any signs of inflammation. Transplanted retinas displayed areas of rosettes as well as normal lamination. In most cases inner retinal layers were present in the grafts. Laminated areas displayed well-developed photoreceptors adjacent to an intact host retinal pigment epithelium and degeneration of the host outer nuclear layer (ONL) was often observed together with occasional fusion of graft and host inner layers.
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Affiliation(s)
- Christopher D Pritchard
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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47
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Hwang NS, Langer RS. Efficient myogenic commitment of hESCs and iPSC‐derived cells on biomimetic materials replicating myoblast topography. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.824.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Robert S Langer
- Chemical EngineeringMassachusetts Institute of TechnologyCambridgeMA
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48
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Abstract
Target-activatable fluorogenic probes based on gold nanoparticles (AuNPs) functionalized with self-assembled heterogeneous monolayers of dye-labeled peptides and poly(ethylene glycol) have been developed to visualize proteolytic activity in vivo. A one-step synthesis strategy that allows simple generation of surface-defined AuNP probe libraries is presented as a means of tailoring and evaluating probe characteristics for maximal fluorescence enhancement after protease activation. Optimal AuNP probes targeted to trypsin and urokinase-type plasminogen activator required the incorporation of a dark quencher to achieve 5- to 8-fold signal amplification. These probes exhibited extended circulation time in vivo and high image contrast in a mouse tumor model.
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Affiliation(s)
- C. Jenny Mu
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts 02139
- Vascular Biology Program, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115
| | - David A. LaVan
- National Institute of Standards and Technology, Gaithersburg, MD 20899
| | - Robert S. Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, 45 Carleton Street, Cambridge, Massachusetts 02142
| | - Bruce R. Zetter
- Vascular Biology Program, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115
- Department of Surgery, Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115
- Corresponding author
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49
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Pritchard CD, Arnér KM, Neal RA, Neeley WL, Bojo P, Bachelder E, Holz J, Watson N, Botchwey EA, Langer RS, Ghosh FK. The use of surface modified poly(glycerol-co-sebacic acid) in retinal transplantation. Biomaterials 2010; 31:2153-62. [PMID: 19962754 PMCID: PMC3117293 DOI: 10.1016/j.biomaterials.2009.11.074] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [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: 10/05/2009] [Accepted: 11/23/2009] [Indexed: 11/18/2022]
Abstract
Retinal transplantation experiments have advanced considerably during recent years, but remaining diseased photoreceptor cells in the host retina and inner retinal cells in the transplant physically obstruct the development of graft-host neuronal contacts which are required for vision. Recently, we developed methods for the isolation of donor photoreceptor layers in vitro, and the selective removal of host photoreceptors in vivo using biodegradable elastomeric membranes composed of poly(glycerol-co-sebacic acid) (PGS). Here, we report the surface modification of PGS membranes to promote the attachment of photoreceptor layers, allowing the resulting composite to be handled surgically as a single entity. PGS membranes were chemically modified with peptides containing an arginine-glycine-aspartic acid (RGD) extracellular matrix ligand sequence. PGS membranes were also coated with electrospun nanofiber meshes, containing laminin and poly(epsilon-caprolactone) (PCL). Following in vitro co-culture of biomaterial membranes with isolated embryonic retinal tissue, composites were tested for surgical handling and examined with hematoxylin and eosin staining and immunohistochemical markers. Electrospun nanofibers composed of laminin and PCL promoted sufficient cell adhesion for simultaneous transplantation of isolated photoreceptor layers and PGS membranes. Composites developed large populations of recoverin and rhodopsin labeled photoreceptors. Furthermore, ganglion cells, rod bipolar cells and AII amacrine cells were absent in co-cultured retinas as observed by neurofilament, PKC and parvalbumin labeling respectively. These results facilitate retinal transplantation experiments in which a composite graft composed of a biodegradable membrane adhered to an immature retina dominated by photoreceptor cells may be delivered in a single surgery, with the possibility of improving graft-host neuronal connections.
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Affiliation(s)
- Christopher D Pritchard
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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50
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Park H, Karajanagi S, Wolak K, Aanestad J, Daheron L, Kobler JB, Lopez-Guerra G, Heaton JT, Langer RS, Zeitels SM. Three-Dimensional Hydrogel Model Using Adipose-Derived Stem Cells for Vocal Fold Augmentation. Tissue Eng Part A 2010; 16:535-43. [DOI: 10.1089/ten.tea.2009.0029] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Hyoungshin Park
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | | | - Kathryn Wolak
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | - Jon Aanestad
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | - Laurence Daheron
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - James B. Kobler
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | - Gerardo Lopez-Guerra
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | - James T. Heaton
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
| | - Robert S. Langer
- Department of Chemical Engineering, MIT, Cambridge, Massachusetts
| | - Steven M. Zeitels
- Department of Surgery, Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, Massachusetts
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