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Koss KM, Son T, Li C, Hao Y, Cao J, Churchward MA, Zhang ZJ, Wertheim JA, Derda R, Todd KG. Toward discovering a novel family of peptides targeting neuroinflammatory states of brain microglia and astrocytes. J Neurochem 2023:10.1111/jnc.15840. [PMID: 37171455 PMCID: PMC10640667 DOI: 10.1111/jnc.15840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 05/13/2023]
Abstract
Microglia are immune-derived cells critical to the development and healthy function of the brain and spinal cord, yet are implicated in the active pathology of many neuropsychiatric disorders. A range of functional phenotypes associated with the healthy brain or disease states has been suggested from in vivo work and were modeled in vitro as surveying, reactive, and primed sub-types of primary rat microglia and mixed microglia/astrocytes. It was hypothesized that the biomolecular profile of these cells undergoes a phenotypical change as well, and these functional phenotypes were explored for potential novel peptide binders using a custom 7 amino acid-presenting M13 phage library (SX7) to identify unique peptides that bind differentially to these respective cell types. Surveying glia were untreated, reactive were induced with a lipopolysaccharide treatment, recovery was modeled with a potent anti-inflammatory treatment dexamethasone, and priming was determined by subsequently challenging the cells with interferon gamma. Microglial function was profiled by determining the secretion of cytokines and nitric oxide, and expression of inducible nitric oxide synthase. After incubation with the SX7 phage library, populations of SX7-positive microglia and/or astrocytes were collected using fluorescence-activated cell sorting, SX7 phage was amplified in Escherichia coli culture, and phage DNA was sequenced via next-generation sequencing. Binding validation was done with synthesized peptides via in-cell westerns. Fifty-eight unique peptides were discovered, and their potential functions were assessed using a basic local alignment search tool. Peptides potentially originated from proteins ranging in function from a variety of supportive glial roles, including synapse support and pruning, to inflammatory incitement including cytokine and interleukin activation, and potential regulation in neurodegenerative and neuropsychiatric disorders.
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Affiliation(s)
- K M Koss
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Illinois, Chicago, USA
- Neurochemical Research Unit, Department of Psychiatry, University of Alberta, Alberta, Edmonton, Canada
- Department of Surgery, University of Arizona College of Medicine, Arizona, Tucson, USA
| | - T Son
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Illinois, Chicago, USA
| | - C Li
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, AB T6G 2G2, Canada
| | - Y Hao
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, AB T6G 2G2, Canada
| | - J Cao
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, AB T6G 2G2, Canada
- 48Hour Discovery Inc, 11421 Saskatchewan Dr NW, Edmonton, AB T6G 2M9, Canada
| | - M A Churchward
- Neurochemical Research Unit, Department of Psychiatry, University of Alberta, Alberta, Edmonton, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Alberta, Edmonton, Canada
- Department of Biology and Environmental Sciences, Concordia University of Edmonton, Alberta, Edmonton, Canada
| | - Z J Zhang
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Illinois, Chicago, USA
| | - J A Wertheim
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Illinois, Chicago, USA
- Department of Surgery, University of Arizona College of Medicine, Arizona, Tucson, USA
| | - R Derda
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, AB T6G 2G2, Canada
- 48Hour Discovery Inc, 11421 Saskatchewan Dr NW, Edmonton, AB T6G 2M9, Canada
| | - K G Todd
- Neurochemical Research Unit, Department of Psychiatry, University of Alberta, Alberta, Edmonton, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Alberta, Edmonton, Canada
- Department of Biomedical Engineering, University of Alberta, Alberta, Edmonton, Canada
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2
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Koss KM, Sereda TJ, Kumirov VK, Wertheim JA. A class of peptides designed to replicate and enhance the Receptor for Hyaluronic Acid Mediated Motility binding domain. Acta Biomater 2023:S1742-7061(23)00251-9. [PMID: 37178990 DOI: 10.1016/j.actbio.2023.05.009] [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] [Received: 02/14/2023] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023]
Abstract
The extra-cellular matrix (ECM) is a complex and rich microenvironment that is exposed and over-expressed across several injury or disease pathologies. Biomaterial therapeutics are often enriched with peptide binders to target the ECM with greater specificity. Hyaluronic acid (HA) is a major component of the ECM, yet to date, few HA adherent peptides have been discovered. A class of HA binding peptides was designed using B(X7)B hyaluronic acid binding domains inspired from the helical face of the Receptor for Hyaluronic Acid Mediated Motility (RHAMM). These peptides were bioengineered using a custom alpha helical net method, allowing for the enrichment of multiple B(X7)B domains and the optimisation of contiguous and non-contiguous domain orientations. Unexpectedly, the molecules also exhibited the behaviour of nanofiber forming self-assembling peptides and were investigated for this characteristic. Ten 23-27 amino acid residue peptides were assessed. Simple molecular modelling was used to depict helical secondary structures. Binding assays were performed with varying concentrations (1-10 mg/mL) and extra-cellular matrices (HA, collagens I-IV, elastin, and Geltrex). Concentration mediated secondary structures were assessed using circular dichroism (CD), and higher order nanostructures were visualized using transmission electron microscopy (TEM). All peptides formed the initial apparent 310/alpha-helices, yet peptides 17x-3, 4, BHP3 and BHP4 were HA specific and potent (i.e., a significant effect) binders at increasing concentrations. These peptides shifted from apparent 310/alpha-helical structures at low concentration to beta-sheets at increasing concentration and also formed nanofibers which are noted as self-assembling structures. Several of the HA binding peptides outperformed our positive control (mPEP35) at 3-4 times higher concentrations, and were enhanced by self-assembly as each of these groups had observable nanofibers. STATEMENT OF SIGNIFICANCE: Specific biomolecules or peptides have played a crucial role in developing materials or systems to deliver key drugs and therapeutics to a broad spectrum of diseases and disorders. In these diseased tissues, cells build protein/sugar networks, which are uniquely exposed and great targets to deliver drugs to. Hyaluronic acid (HA) is involved in every stage of injury and is abundant in cancer. To date, only two HA specific peptides have been discovered. In our work, we have designed a way to model and trace binding regions as they appear on the face of a helical peptide. Using this method we have created a family of peptides enriched with HA binding domains that stick with 3-4 higher affinity than those previously discovered.
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Affiliation(s)
- Kyle M Koss
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Department of Surgery, University of Arizona College of Medicine, Tucson, AZ
| | | | - Vlad K Kumirov
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ
| | - Jason A Wertheim
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Department of Surgery, University of Arizona College of Medicine, Tucson, AZ
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Jones TM, Espitia CM, Chipollini J, Lee BR, Wertheim JA, Carew JS, Nawrocki ST. Targeting NEDDylation is a Novel Strategy to Attenuate Cisplatin-induced Nephrotoxicity. Cancer Res Commun 2023; 3:245-257. [PMID: 36860653 PMCID: PMC9973416 DOI: 10.1158/2767-9764.crc-22-0340] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/26/2022] [Accepted: 01/26/2023] [Indexed: 01/31/2023]
Abstract
Although cisplatin remains a backbone of standard-of-care chemotherapy regimens for a variety of malignancies, its use is often associated with severe dose-limiting toxicities (DLT). Notably, 30%-40% of patients treated with cisplatin-based regimens are forced to discontinue treatment after experiencing nephrotoxicity as a DLT. New approaches that simultaneously prevent renal toxicity while improving therapeutic response have the potential to make a major clinical impact for patients with multiple forms of cancer. Here, we report that pevonedistat (MLN4924), a first-in-class NEDDylation inhibitor, alleviates nephrotoxicity and synergistically enhances the efficacy of cisplatin in head and neck squamous cell carcinoma (HNSCC) models. We demonstrate that pevonedistat protects normal kidney cells from injury while enhancing the anticancer activity of cisplatin through a thioredoxin-interacting protein (TXNIP)-mediated mechanism. Cotreatment with pevonedistat and cisplatin yielded dramatic HNSCC tumor regression and long-term animal survival in 100% of treated mice. Importantly, the combination decreased nephrotoxicity induced by cisplatin monotherapy as evidenced by the blockade of kidney injury molecule-1 (KIM-1) and TXNIP expression, a reduction in collapsed glomeruli and necrotic cast formation, and inhibition of cisplatin-mediated animal weight loss. Inhibition of NEDDylation represents a novel strategy to prevent cisplatin-induced nephrotoxicity while simultaneously enhancing its anticancer activity through a redox-mediated mechanism. Significance Cisplatin therapy is associated with significant nephrotoxicity, which limits its clinical use. Here we demonstrate that NEDDylation inhibition with pevonedistat is a novel approach to selectively prevent cisplatin-induced oxidative damage to the kidneys while simultaneously enhancing its anticancer efficacy. Clinical evaluation of the combination of pevonedistat and cisplatin is warranted.
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Affiliation(s)
- Trace M. Jones
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, Arizona
| | - Claudia M. Espitia
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, Arizona
| | - Juan Chipollini
- Department of Urology, University of Arizona, Tucson, Arizona
| | - Benjamin R. Lee
- Department of Urology, University of Arizona, Tucson, Arizona
| | - Jason A. Wertheim
- Departments of Surgery and Biomedical Engineering, University of Arizona, Tucson, Arizona
| | - Jennifer S. Carew
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, Arizona
| | - Steffan T. Nawrocki
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, Arizona
- Department of Urology, University of Arizona, Tucson, Arizona
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Harley JB, Pyarajan S, Partan ES, Epstein L, Wertheim JA, Diwan A, Woods CW, Davey V, Blair S, Clark DH, Kaufman KM, Khan S, Chepelev I, Devine A, Cameron P, McCann MF, Ammons MCB, Bolz DD, Battles JK, Curtis JL, Holodniy M, Marconi VC, Searles CD, Beenhouwer DO, Brown ST, Moorman JP, Yao ZQ, Rodriguez-Barradas MC, Mohapatra S, Molina De Rodriguez OY, Padiernos EB, McIndoo ER, Price E, Burgoyne HM, Robey I, Schwenke DC, Shive CL, Przygodzki RM, Ramoni RB, Krull HK, Bonomo RA. The US Department of Veterans Affairs Science and Health Initiative to Combat Infectious and Emerging Life-Threatening Diseases (VA SHIELD): A Biorepository Addressing National Health Threats. Open Forum Infect Dis 2022; 9:ofac641. [PMID: 36601554 PMCID: PMC9801224 DOI: 10.1093/ofid/ofac641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 12/15/2022] Open
Abstract
Background The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has demonstrated the need to share data and biospecimens broadly to optimize clinical outcomes for US military Veterans. Methods In response, the Veterans Health Administration established VA SHIELD (Science and Health Initiative to Combat Infectious and Emerging Life-threatening Diseases), a comprehensive biorepository of specimens and clinical data from affected Veterans to advance research and public health surveillance and to improve diagnostic and therapeutic capabilities. Results VA SHIELD now comprises 12 sites collecting de-identified biospecimens from US Veterans affected by SARS-CoV-2. In addition, 2 biorepository sites, a data processing center, and a coordinating center have been established under the direction of the Veterans Affairs Office of Research and Development. Phase 1 of VA SHIELD comprises 34 157 samples. Of these, 83.8% had positive tests for SARS-CoV-2, with the remainder serving as contemporaneous controls. The samples include nasopharyngeal swabs (57.9%), plasma (27.9%), and sera (12.5%). The associated clinical and demographic information available permits the evaluation of biological data in the context of patient demographics, clinical experience and management, vaccinations, and comorbidities. Conclusions VA SHIELD is representative of US national diversity with a significant potential to impact national healthcare. VA SHIELD will support future projects designed to better understand SARS-CoV-2 and other emergent healthcare crises. To the extent possible, VA SHIELD will facilitate the discovery of diagnostics and therapeutics intended to diminish COVID-19 morbidity and mortality and to reduce the impact of new emerging threats to the health of US Veterans and populations worldwide.
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Affiliation(s)
- John B Harley
- Correspondence: John B. Harley, Cincinnati VA Medical Center, 3200 Vine St., John B. Harley (151), Cincinnati, OH 45220 ()
| | - Saiju Pyarajan
- Center for Data and Computational Sciences, Veterans Affairs Boston Healthcare System, Boston, Massachusetts, USA
| | - Elizabeth S Partan
- Center for Data and Computational Sciences, Veterans Affairs Boston Healthcare System, Boston, Massachusetts, USA
| | - Lauren Epstein
- Infectious Diseases, US Department of Veterans Affairs Medical Center, Atlanta, Georgia, USA
| | - Jason A Wertheim
- Research & Development, Southern Arizona Veterans Affairs Healthcare System, US Department of Veterans Affairs, Tucson, Arizona, USA
| | - Abhinav Diwan
- Cardiology, Veterans Affairs Saint Louis Healthcare System, US Department of Veterans Affairs,Saint Louis, Missouri, USA
| | - Christopher W Woods
- Medicine, US Department of Veterans Affairs Medical Center, Durham, North Carolina, USA
| | - Victoria Davey
- Office of Research and Development, US Department of Veterans Affairs, Washington, District of Columbia, USA
| | - Sharlene Blair
- Research Services, US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Dennis H Clark
- Research Services, US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Kenneth M Kaufman
- Research Services, US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Shagufta Khan
- Research Services, US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Iouri Chepelev
- Research Services, US Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Alexander Devine
- Prometheus Federal Services, Titan Alpha, Washington, District of Columbia, USA
| | - Perry Cameron
- Customer Value Partners, Titan Alpha, Washington, District of Columbia, USA
| | - Monica F McCann
- Office of Research and Development, Chesapeake Medical Communications, Contractor for the US Department of Veterans Affairs, Washington, District of Columbia, USA
| | - Mary Cloud B Ammons
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA,Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Devin D Bolz
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA
| | - Jane K Battles
- Office of Research and Development, US Department of Veterans Affairs, Washington, District of Columbia, USA
| | - Jeffrey L Curtis
- Medicine Service, Veteran Affairs Ann Arbor Healthcare System, US Department of Veterans Affairs, Ann Arbor, Michigan, USA
| | - Mark Holodniy
- Public Health Surveillance, Veterans Affairs Palo Alto Healthcare System, US Department of Veterans Affairs, Palo Alto, California, USA
| | - Vincent C Marconi
- Infectious Diseases, US Department of Veterans Affairs Medical Center, Atlanta, Georgia, USA,Division of Infectious Diseases, Emory School of Medicine and Rollins School of Public Health, Atlanta, Georgia, USA
| | - Charles D Searles
- Infectious Diseases, US Department of Veterans Affairs Medical Center, Atlanta, Georgia, USA
| | - David O Beenhouwer
- Medicine, Veterans Affairs Greater Los Angeles Healthcare System, US Department of Veterans Affairs, Los Angeles, California, USA
| | - Sheldon T Brown
- Infectious Diseases, James J. Peters Veterans Affairs Medical Center, US Department of Veterans Affairs, Bronx, New York, USA
| | - Jonathan P Moorman
- Infectious Diseases, James H. Quillen Veterans Affairs Medical Center, US Department of Veterans Affairs, Mountain Home, Tennessee, USA,Center of Excellence in Inflammation, Infectious Diseases, and Immunity, East Tennessee State University, Johnson City, Tennessee, USA
| | - Zhi Q Yao
- Infectious Diseases, James H. Quillen Veterans Affairs Medical Center, US Department of Veterans Affairs, Mountain Home, Tennessee, USA,Center of Excellence in Inflammation, Infectious Diseases, and Immunity, East Tennessee State University, Johnson City, Tennessee, USA
| | - Maria C Rodriguez-Barradas
- Infectious Diseases Section, Michael E. DeBakey Veterans Affairs Medical Center, US Department of Veterans Affairs, Houston, Texas, USA,Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Shyam Mohapatra
- Medicine, James A. Haley Veterans Hospital, US Department of Veterans Affairs, Tampa, Florida, USA
| | - Osmara Y Molina De Rodriguez
- Research & Development, Southern Arizona Veterans Affairs Healthcare System, US Department of Veterans Affairs, Tucson, Arizona, USA
| | - Emerson B Padiernos
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA
| | - Eric R McIndoo
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA,Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Emily Price
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA,Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Hailey M Burgoyne
- Research, US Department of Veterans Affairs Medical Center, Boise, Idaho, USA,Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Ian Robey
- Research & Development, Southern Arizona Veterans Affairs Healthcare System, US Department of Veterans Affairs, Tucson, Arizona, USA
| | - Dawn C Schwenke
- Research & Development, Southern Arizona Veterans Affairs Healthcare System, US Department of Veterans Affairs, Tucson, Arizona, USA
| | - Carey L Shive
- Medicine, Veterans Affairs Northeast Ohio Healthcare System, US Department of Veterans Affairs, Cleveland, Ohio, USA
| | - Ronald M Przygodzki
- Office of Research and Development, US Department of Veterans Affairs, Washington, District of Columbia, USA
| | - Rachel B Ramoni
- Office of Research and Development, US Department of Veterans Affairs, Washington, District of Columbia, USA
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Hekman KE, Koss KM, Ivancic DZ, He C, Wertheim JA. Autophagy Enhances Longevity of Induced Pluripotent Stem Cell-Derived Endothelium via mTOR-Independent ULK1 Kinase. Stem Cells Transl Med 2022; 11:1151-1164. [PMID: 36173887 PMCID: PMC9672854 DOI: 10.1093/stcltm/szac069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 07/23/2022] [Indexed: 12/04/2022] Open
Abstract
Stem cells are enabling an improved understanding of the peripheral arterial disease, and patient-specific stem cell-derived endothelial cells (ECs) present major advantages as a therapeutic modality. However, applications of patient-specific induced pluripotent stem cell (iPSC)-derived ECs are limited by rapid loss of mature cellular function in culture. We hypothesized that changes in autophagy impact the phenotype and cellular proliferation of iPSC-ECs. Endothelial cells were differentiated from distinct induced pluripotent stem cell lines in 2D culture and purified for CD144 positive cells. Autophagy, mitochondrial morphology, and proliferation were characterized during differentiation and over serial passages in culture. We found that autophagy activity was stimulated during differentiation but stagnated in mature iPSC-ECs. Mitochondria remodeled through mitophagy during differentiation and demonstrated increasing membrane potential and mass through serial passages; however, these plateaued, coinciding with decreased proliferation. To evaluate for oxidative damage, iPSC-ECs were alternatively grown under hypoxic culture conditions; however, hypoxia only transiently improved the proliferation. Stimulating mTOR-independent ULK1-mediated autophagy with a plant derivative AMP kinase activator Rg2 significantly improved proliferative capacity of iPSC-ECs over multiple passages. Therefore, autophagy, a known mediator of longevity, played an active role in remodeling mitochondria during maturation from pluripotency to a terminally differentiated state. Autophagy failed to compensate for increasing mitochondrial mass over serial passages, which correlated with loss of proliferation in iPSC-ECs. Stimulating ULK1-kinase-driven autophagy conferred improved proliferation and longevity over multiple passages in culture. This represents a novel approach to overcoming a major barrier limiting the use of iPSC-ECs for clinical and research applications.
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Affiliation(s)
- Katherine E Hekman
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Emory School of Medicine, Emory University, Atlanta, GA, USA.,Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Section of Vascular Surgery, Surgery Service Line, Atlanta VA Healthcare System, Decatur, GA, USA
| | - Kyle M Koss
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA.,Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - David Z Ivancic
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Congcong He
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jason A Wertheim
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA.,Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Surgery Service Line, Southern Arizona VA Healthcare System, Tucson, AZ, USA
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Naved BA, Bonventre JV, Hubbell JA, Hukriede NA, Humphreys BD, Kesselman C, Valerius MT, McMahon AP, Shankland SJ, Wertheim JA, White MJV, de Caestecker MP, Drummond IA. Kidney repair and regeneration: perspectives of the NIDDK (Re)Building a Kidney consortium. Kidney Int 2022; 101:845-853. [PMID: 35276204 PMCID: PMC9045003 DOI: 10.1016/j.kint.2022.02.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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: 11/15/2021] [Revised: 01/17/2022] [Accepted: 02/16/2022] [Indexed: 12/14/2022]
Abstract
Acute kidney injury impacts ∼13.3 million individuals and causes ∼1.7 million deaths per year globally. Numerous injury pathways contribute to acute kidney injury, including cell cycle arrest, senescence, inflammation, mitochondrial dysfunction, and endothelial injury and dysfunction, and can lead to chronic inflammation and fibrosis. However, factors enabling productive repair versus nonproductive, persistent injury states remain less understood. The (Re)Building a Kidney (RBK) consortium is a National Institute of Diabetes and Digestive and Kidney Diseases consortium focused on both endogenous kidney repair mechanisms and the generation of new kidney tissue. This short review provides an update on RBK studies of endogenous nephron repair, addressing the following questions: (i) What is productive nephron repair? (ii) What are the cellular sources and drivers of repair? and (iii) How do RBK studies promote development of therapeutics? Also, we provide a guide to RBK's open access data hub for accessing, downloading, and further analyzing data sets.
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Affiliation(s)
- Bilal A Naved
- Medical Science Training Program, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Joseph V Bonventre
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jeffrey A Hubbell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, USA
| | - Neil A Hukriede
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Benjamin D Humphreys
- Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Carl Kesselman
- Informatics Systems Research Division, Information Sciences Institute, University of Southern California, Los Angeles, California, USA
| | - M Todd Valerius
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrew P McMahon
- Department of Stem Cell Biology and Regenerative Medicine, W.M. Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Stuart J Shankland
- Division of Nephrology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Jason A Wertheim
- Department of Biomedical Engineering, College of Medicine, The University of Arizona, Tucson, Arizona, USA
| | - Michael J V White
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, USA
| | - Mark P de Caestecker
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Iain A Drummond
- Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, Maine, USA.
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Parsons RF, Baquerizo A, Kirchner VA, Malek S, Desai CS, Schenk A, Finger EB, Brennan TV, Parekh KR, MacConmara M, Brayman K, Fair J, Wertheim JA. Challenges, highlights, and opportunities in cellular transplantation: A white paper of the current landscape. Am J Transplant 2021; 21:3225-3238. [PMID: 34212485 DOI: 10.1111/ajt.16740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 12/22/2020] [Revised: 06/22/2021] [Accepted: 06/22/2021] [Indexed: 02/05/2023]
Abstract
Although cellular transplantation remains a relatively small field compared to solid organ transplantation, the prospects for advancement in basic science and clinical care remain bountiful. In this review, notable historical events and the current landscape of the field of cellular transplantation are reviewed with an emphasis on islets (allo- and xeno-), hepatocytes (including bioartificial liver), adoptive regulatory immunotherapy, and stem cells (SCs, specifically endogenous organ-specific and mesenchymal). Also, the nascent but rapidly evolving field of three-dimensional bioprinting is highlighted, including its major processing steps and latest achievements. To reach its full potential where cellular transplants are a more viable alternative than solid organ transplants, fundamental change in how the field is regulated and advanced is needed. Greater public and private investment in the development of cellular transplantation is required. Furthermore, consistent with the call of multiple national transplant societies for allo-islet transplants, the oversight of cellular transplants should mirror that of solid organ transplants and not be classified under the unsustainable, outdated model that requires licensing as a drug with the Food and Drug Administration. Cellular transplantation has the potential to bring profound benefit through progress in bioengineering and regenerative medicine, limiting immunosuppression-related toxicity, and providing markedly reduced surgical morbidity.
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Affiliation(s)
- Ronald F Parsons
- Department of Surgery, Emory Transplant Center, Emory University School of Medicine, Atlanta, Georgia
| | - Angeles Baquerizo
- Scripps Center for Cell and Organ Transplantation, La Jolla, California
| | - Varvara A Kirchner
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Sayeed Malek
- Division of Transplant Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Chirag S Desai
- Division of Transplantation, Department of Surgery, University of North Carolina, Chapel Hill, North Carolina
| | - Austin Schenk
- Division of Transplantation, Department of Surgery, Ohio State University, Columbus, Ohio
| | - Erik B Finger
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Todd V Brennan
- Department of Surgery, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California
| | - Kalpaj R Parekh
- Division of Cardiothoracic Surgery, Department of Surgery, Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Malcolm MacConmara
- Division of Surgical Transplantation, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Kenneth Brayman
- Division of Transplantation, Department of Surgery, University of Virginia, Charlottesville, Virginia
| | - Jeffrey Fair
- Division of Transplant Surgery, Department of Surgery, University of Texas Medical Branch, Galveston, Texas
| | - Jason A Wertheim
- Departments of Surgery and Biomedical Engineering, University of Arizona Health Sciences, Tucson, Arizona
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Gupta AK, Ivancic DZ, Naved BA, Wertheim JA, Oxburgh L. An efficient method to generate kidney organoids at the air-liquid interface. J Biol Methods 2021; 8:e150. [PMID: 34258308 PMCID: PMC8270790 DOI: 10.14440/jbm.2021.357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 11/23/2022] Open
Abstract
The prevalence of kidney dysfunction continues to increase worldwide, driving the need to develop transplantable renal tissues. The kidney develops from four major renal progenitor populations: nephron epithelial, ureteric epithelial, interstitial and endothelial progenitors. Methods have been developed to generate kidney organoids but few or dispersed tubular clusters within the organoids hamper its use in regenerative applications. Here, we describe a detailed protocol of asynchronous mixing of kidney progenitors using organotypic culture conditions to generate kidney organoids tightly packed with tubular clusters and major renal structures including endothelial network and functional proximal tubules. This protocol provides guidance in the culture of human embryonic stem cells from a National Institute of Health-approved line and their directed differentiation into kidney organoids. Our 18-day protocol provides a rapid method to generate kidney organoids that facilitate the study of different nephrological events including in vitro tissue development, disease modeling and chemical screening. However, further studies are required to optimize the protocol to generate additional renal-specific cell types, interconnected nephron segments and physiologically functional renal tissues.
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Affiliation(s)
- Ashwani Kumar Gupta
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - David Z. Ivancic
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Bilal A. Naved
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Jason A. Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL 60208, USA
- Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA
- Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL 60612, USA
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9
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Wysocki J, Ye M, Hassler L, Gupta AK, Wang Y, Nicoleascu V, Randall G, Wertheim JA, Batlle D. A Novel Soluble ACE2 Variant with Prolonged Duration of Action Neutralizes SARS-CoV-2 Infection in Human Kidney Organoids. J Am Soc Nephrol 2021; 32:795-803. [PMID: 33526471 PMCID: PMC8017551 DOI: 10.1681/asn.2020101537] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/27/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND There is an urgent need for approaches to prevent and treat SARS-CoV-2 infection. Administration of soluble ACE2 protein acting as a decoy to bind to SARS-CoV-2 should limit viral uptake mediated by binding to membrane-bound full-length ACE2, and further therapeutic benefit should result from ensuring enzymatic ACE2 activity to affected organs in patients with COVID-19. METHODS A short variant of human soluble ACE2 protein consisting of 618 amino acids (hACE2 1-618) was generated and fused with an albumin binding domain (ABD) using an artificial gene encoding ABDCon, with improved albumin binding affinity. Human kidney organoids were used for infectivity studies of SARS-CoV-2 in a BSL-3 facility to examine the neutralizing effect of these novel ACE2 variants. RESULTS Whereas plasma ACE2 activity of the naked ACE2 1-618 and ACE2 1-740 lasted about 8 hours, the ACE2 1-618-ABD resulted in substantial activity at 96 hours, and it was still biologically active 3 days after injection. Human kidney organoids express ACE2 and TMPRSS2, and when infected with SARS-CoV-2, our modified long-acting ACE2 variant neutralized infection. CONCLUSIONS This novel ACE2 1-618-ABD can neutralize SARS-CoV-2 infectivity in human kidney organoids, and its prolonged duration of action should ensure improved efficacy to prevent viral escape and dosing convenience.
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Affiliation(s)
- Jan Wysocki
- Division of Nephrology and Hypertension, Department of Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Minghao Ye
- Division of Nephrology and Hypertension, Department of Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Luise Hassler
- Division of Nephrology and Hypertension, Department of Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Ashwani Kumar Gupta
- Comprehensive Transplant Center, Department of Surgery, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Yuguo Wang
- Comprehensive Transplant Center, Department of Surgery, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Vlad Nicoleascu
- Department of Microbiology, Ricketts Laboratory, University of Chicago, Chicago, Illinois
| | - Glenn Randall
- Department of Microbiology, Ricketts Laboratory, University of Chicago, Chicago, Illinois
| | - Jason A. Wertheim
- Comprehensive Transplant Center, Department of Surgery, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Daniel Batlle
- Division of Nephrology and Hypertension, Department of Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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10
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Zheng F, Tully A, Koss KM, Zhang X, Qiu L, Wang JJ, Naved BA, Ivancic DZ, Mathew JM, Wertheim JA, Zhang ZJ. Taking the Next Step: a Neural Coaptation Orthotopic Hind Limb Transplant Model to Maximize Functional Recovery in Rat. J Vis Exp 2020. [PMID: 32925888 DOI: 10.3791/60777] [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: 10/31/2022] Open
Abstract
Limb transplant in particular and vascularized composite allotransplant (VCA) in general have wide therapeutic promise that have been stymied by current limitations in immunosuppression and functional neuromotor recovery. Many animal models have been developed for studying unique features of VCA, but here we present a robust reproducible model of orthotopic hind limb transplant in rats designed to simultaneously investigate both aspects of current VCA limitation: immunosuppression strategies and functional neuromotor recovery. At the core of the model rests a commitment to meticulous, time-tested microsurgical techniques such as hand sewn vascular anastomoses and hand sewn neural coaptation of the femoral nerve and the sciatic nerve. This approach yields durable limb reconstructions that allow for longer lived animals capable of rehabilitation, resumption of daily activities, and functional testing. With short-term treatment of conventional immunosuppressive agents, allotransplanted animals survived up to 70 days post-transplant, and isotransplanted animals provide long lived controls beyond 200 days post-operatively. Evidence of neurologic functional recovery is present by 30 days post operatively. This model not only provides a useful platform for interrogating immunological questions unique to VCA and nerve regeneration, but also allows for in vivo testing of new therapeutic strategies specifically tailored for VCA.
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Affiliation(s)
- Feibo Zheng
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University; Department of Surgery, Tianjin Occupational Diseases Precaution and Therapeutic Hospital
| | - Andy Tully
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University; Department of Surgery, University of Illinois at Chicago
| | - Kyle M Koss
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Xiaomin Zhang
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Longhui Qiu
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Jiao-Jing Wang
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Bilal A Naved
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University; Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University
| | - David Z Ivancic
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - James M Mathew
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Jason A Wertheim
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Zheng Jenny Zhang
- Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University;
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11
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Das P, DiVito MD, Wertheim JA, Tan LP. Collagen-I and fibronectin modified three-dimensional electrospun PLGA scaffolds for long-term in vitro maintenance of functional hepatocytes. Materials Science and Engineering: C 2020; 111:110723. [DOI: 10.1016/j.msec.2020.110723] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/26/2019] [Accepted: 02/03/2020] [Indexed: 12/20/2022]
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12
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Kumar Gupta A, Sarkar P, Wertheim JA, Pan X, Carroll TJ, Oxburgh L. Asynchronous mixing of kidney progenitor cells potentiates nephrogenesis in organoids. Commun Biol 2020; 3:231. [PMID: 32393756 PMCID: PMC7214420 DOI: 10.1038/s42003-020-0948-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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] [Received: 02/20/2020] [Accepted: 04/10/2020] [Indexed: 11/17/2022] Open
Abstract
A fundamental challenge in emulating kidney tissue formation through directed differentiation of human pluripotent stem cells is that kidney development is iterative, and to reproduce the asynchronous mix of differentiation states found in the fetal kidney we combined cells differentiated at different times in the same organoid. Asynchronous mixing promoted nephrogenesis, and heterochronic organoids were well vascularized when engrafted under the kidney capsule. Micro-CT and injection of a circulating vascular marker demonstrated that engrafted kidney tissue was connected to the systemic circulation by 2 weeks after engraftment. Proximal tubule glucose uptake was confirmed, but despite these promising measures of graft function, overgrowth of stromal cells prevented long-term study. We propose that this is a technical feature of the engraftment procedure rather than a specific shortcoming of the directed differentiation because kidney organoids derived from primary cells and whole embryonic kidneys develop similar stromal overgrowth when engrafted under the kidney capsule. Ashwani Gupta et al. report an improved protocol for kidney organoid differentiation from pluripotent stem cells. The authors simulate the condition of the fetal kidney by mixing cells differentiated at different times from the same organoid, thereby promoting nephrogenesis in vitro and vascularization after engraftment under the kidney capsule in mice.
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Affiliation(s)
- Ashwani Kumar Gupta
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | | | - Jason A Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA.,Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA.,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA.,Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Xinchao Pan
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Thomas J Carroll
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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13
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Ferrer JR, Sinegra AJ, Ivancic D, Yeap XY, Qiu L, Wang JJ, Zhang ZJ, Wertheim JA, Mirkin CA. Structure-Dependent Biodistribution of Liposomal Spherical Nucleic Acids. ACS Nano 2020; 14:1682-1693. [PMID: 31951368 PMCID: PMC7119368 DOI: 10.1021/acsnano.9b07254] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Spherical nucleic acids (SNAs) are a class of nanomaterials with a structure defined by a radial distribution of densely packed, short DNA or RNA sequences around a nanoparticle core. This structure allows SNAs to rapidly enter mammalian cells, protects the displayed oligonucleotides from nuclease degradation, and enables co-delivery of other drug cargoes. Here, we investigate the biodistribution of liposomal spherical nucleic acid (LSNA) conjugates, SNA architectures formed from liposome templates and DNA modified with hydrophobic end groups (tails). We compared linear DNA with two types of LSNAs that differ only by the affinity of the modified DNA sequence for the liposome template. We use single-stranded DNA (ssDNA) terminated with either a low-affinity cholesterol tail (CHOL-LSNA) or a high-affinity diacylglycerol lipid tail (DPPE-LSNA). Both LSNA formulations, independent of DNA conjugation, reduce the inflammatory cytokine response to intravenously administered DNA. The difference in the affinity for the liposome template significantly affects DNA biodistribution. DNA from CHOL-LSNAs accumulates in greater amounts in the lungs than DNA from DPPE-LSNAs. In contrast, DNA from DPPE-LSNAs exhibits greater accumulation in the kidneys. Flow cytometry and fluorescence microscopy of tissue sections indicate that different cell populations-immune and nonimmune-sequester the DNA depending upon the chemical makeup of the LSNA. Taken together, these data suggest that the chemical structure of the LSNAs represents an opportunity to direct the biodistribution of nucleic acids to major tissues outside of the liver.
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Affiliation(s)
- Jennifer R Ferrer
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
- International Institute for Nanotechnology , Northwestern University , Evanston , Illinois 60208 , United States
| | - Andrew J Sinegra
- Department of Biomedical Engineering , Northwestern University , Evanston , Illinois 60208 , United States
- International Institute for Nanotechnology , Northwestern University , Evanston , Illinois 60208 , United States
| | - David Ivancic
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
| | - Xin Yi Yeap
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
| | - Longhui Qiu
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
| | - Jiao-Jing Wang
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
| | - Zheng Jenny Zhang
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
| | - Jason A Wertheim
- Comprehensive Transplant Center and Department of Surgery , Northwestern University Feinberg School of Medicine , Chicago , Illinois 60611 , United States
- Department of Surgery , Jesse Brown VA Medical Center , Chicago , Illinois 60612 , United States
- International Institute for Nanotechnology , Northwestern University , Evanston , Illinois 60208 , United States
| | - Chad A Mirkin
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
- International Institute for Nanotechnology , Northwestern University , Evanston , Illinois 60208 , United States
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14
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Hekman KE, Koss K, Ivancic DZ, He C, Wertheim JA. The Role of Autophagy During Differentiation and in Enhancing the Longevity of Induced Pluripotent Stem Cell-Derived Endothelial Cells. JVS Vasc Sci 2020. [DOI: 10.1016/j.jvssci.2020.11.017] [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: 11/30/2022] Open
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15
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Su J, Satchell SC, Wertheim JA, Shah RN. Poly(ethylene glycol)-crosslinked gelatin hydrogel substrates with conjugated bioactive peptides influence endothelial cell behavior. Biomaterials 2019; 201:99-112. [PMID: 30807988 PMCID: PMC6777960 DOI: 10.1016/j.biomaterials.2019.02.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 12/03/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/28/2022]
Abstract
The basement membrane is a specialized extracellular matrix substrate responsible for support and maintenance of epithelial and endothelial structures. Engineered basement membrane-like hydrogel systems have the potential to advance understanding of cell-cell and cell-matrix interactions by allowing precise tuning of the substrate or matrix biochemical and biophysical properties. In this investigation, we developed tunable hydrogel substrates with conjugated bioactive peptides to modulate cell binding and growth factor signaling by endothelial cells. Hydrogels were formed by employing a poly(ethylene glycol) crosslinker to covalently crosslink gelatin polymers and simultaneously conjugate laminin-derived YIGSR peptides or vascular endothelial growth factor (VEGF)-mimetic QK peptides to the gelatin. Rheological characterization revealed rapid formation of hydrogels with similar stiffnesses across tested formulations, and swelling analysis demonstrated dependency on peptide and crosslinker concentrations in hydrogels. Levels of phosphorylated VEGF Receptor 2 in cells cultured on hydrogel substrates revealed that while human umbilical vein endothelial cells (HUVECs) responded to both soluble and conjugated forms of the QK peptide, conditionally-immortalized human glomerular endothelial cells (GEnCs) only responded to the conjugated presentation of the peptide. Furthermore, whereas HUVECs exhibited greatest upregulation in gene expression when cultured on YIGSR- and QK-conjugated hydrogel substrates after 5 days, GEnCs exhibited greatest upregulation when cultured on Matrigel control substrates at the same time point. These results indicate that conjugation of bioactive peptides to these hydrogel substrates significantly influenced endothelial cell behavior in cultures but with differential responses between HUVECs and GEnCs.
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Affiliation(s)
- Jimmy Su
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Simon C Satchell
- Bristol Renal, University of Bristol, Dorothy Hodgkin Building, Bristol, United Kingdom
| | - Jason A Wertheim
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA.
| | - Ramille N Shah
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, USA.
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16
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Abstract
Liposomal spherical nucleic acids (LSNAs) are a class of nanomaterial used broadly for biomedical applications. Their intrinsic capacity to rapidly enter cells and engage cell surface and intracellular ligands stems from their unique three-dimensional architecture, which consists of densely packed and uniformly oriented oligonucleotides on the surface of a liposomal core. Such structures are promising for therapeutics because they can carry chemical cargo within the lipid core in addition to the nucleic acids that define them, in principle enabling delivery of multiple signals to a single cell. On the basis of these traits, we have designed novel dual-targeting LSNAs that deliver a nucleic acid specific for TLR9 inhibition and a small molecule (TAK-242) that inhibits TLR4. Toll-like receptors (TLRs) play a large role in pathogen recognition and disease initiation, and TLR subtypes are differentially located within the lipid membranes of the cell surface and within intracellular endosomes. Oftentimes, in acute or chronic inflammatory conditions, multiple TLRs are activated, leading to stimulation of distinct, and sometimes overlapping, downstream pathways. As such, these inflammatory conditions may respond to attenuation of more than one initiating receptor. We show that dual targeting LSNAs, comprised of unilamellar liposomal cores, the INH-18 oligonucleotide sequence, and TAK-242 robustly inhibit TLR-9 and TLR-4 respectively, in engineered TLR reporter cells and primary mouse peritoneal macrophages. Importantly, the LSNAs exhibit up to a 10- and a 1000-fold increase, respectively, in TLR inhibition compared to the linear sequence and TAK-242 alone. Moreover, the timing of delivery is shown to be a critical factor in effecting TLR-inhibition, with near-complete TLR-4 inhibition occurring when cells were pretreated with SNAs for 4 h prior to stimulation. The most pronounced effect observed from this approach is the benefit of delivering the small molecule within the SNA via the receptor-mediated internalization pathway common to SNAs.
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Affiliation(s)
- Jennifer R Ferrer
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.,Department of Surgery , Northwestern Feinberg School of Medicine , Chicago , Illinois 60611 , United States.,International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
| | - Jason A Wertheim
- Department of Surgery , Northwestern Feinberg School of Medicine , Chicago , Illinois 60611 , United States.,Department of Biomedical Engineering , Northwestern University , Evanston , Illinois 60208 , United States.,Department of Surgery , Jesse Brown VA Medical Center , Chicago , Illinois 60612 , United States
| | - Chad A Mirkin
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.,Department of Biomedical Engineering , Northwestern University , Evanston , Illinois 60208 , United States.,International Institute for Nanotechnology , Evanston , Illinois 60208 , United States
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17
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Su J, Satchell SC, Shah RN, Wertheim JA. Kidney decellularized extracellular matrix hydrogels: Rheological characterization and human glomerular endothelial cell response to encapsulation. J Biomed Mater Res A 2018; 106:2448-2462. [PMID: 29664217 PMCID: PMC6376869 DOI: 10.1002/jbm.a.36439] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 10/02/2017] [Revised: 01/23/2018] [Accepted: 04/05/2018] [Indexed: 01/15/2023]
Abstract
Hydrogels, highly-hydrated crosslinked polymer networks, closely mimic the microenvironment of native extracellular matrix (ECM) and thus present as ideal platforms for three-dimensional cell culture. Hydrogels derived from tissue- and organ-specific decellularized ECM (dECM) may retain bioactive signaling cues from the native tissue or organ that could in turn modulate cell-material interactions and response. In this study, we demonstrate that porcine kidney dECM can be processed to form hydrogels suitable for cell culture and encapsulation studies. Scanning electron micrographs of hydrogels demonstrated a fibrous ultrastructure with interconnected pores, and rheological analysis revealed rapid gelation times with shear moduli dependent upon the protein concentration of the hydrogels. Conditionally-immortalized human glomerular endothelial cells (GEnCs) cultured on top of or encapsulated within hydrogels exhibited high cell viability and proliferation over a one-week culture period. However, gene expression analysis of GEnCs encapsulated within kidney dECM hydrogels revealed significantly lower expression of several relevant genes of interest compared to those encapsulated within hydrogels composed of only purified collagen I. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A:2448-2462, 2018.
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Affiliation(s)
- Jimmy Su
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Simon C. Satchell
- Bristol Renal, University of Bristol, Dorothy Hodgkin Building, Bristol, United Kingdom
| | - Ramille N. Shah
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Materials Science & Engineering, Northwestern University, Evanston, IL, USA
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Jason A. Wertheim
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
- Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA
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18
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Sawicki KT, Chang HC, Shapiro JS, Bayeva M, De Jesus A, Finck BN, Wertheim JA, Blackshear PJ, Ardehali H. Hepatic tristetraprolin promotes insulin resistance through RNA destabilization of FGF21. JCI Insight 2018; 3:95948. [PMID: 29997282 DOI: 10.1172/jci.insight.95948] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 06/26/2017] [Accepted: 05/23/2018] [Indexed: 12/11/2022] Open
Abstract
The role of posttranscriptional metabolic gene regulatory programs in diabetes is not well understood. Here, we show that the RNA-binding protein tristetraprolin (TTP) is reduced in the livers of diabetic mice and humans and is transcriptionally induced in response to insulin treatment in murine livers in vitro and in vivo. Liver-specific Ttp-KO (lsTtp-KO) mice challenged with high-fat diet (HFD) have improved glucose tolerance and peripheral insulin sensitivity compared with littermate controls. Analysis of secreted hepatic factors demonstrated that fibroblast growth factor 21 (FGF21) is posttranscriptionally repressed by TTP. Consistent with increased FGF21, lsTtp-KO mice fed HFD have increased brown fat activation, peripheral tissue glucose uptake, and adiponectin production compared with littermate controls. Downregulation of hepatic Fgf21 via an adeno-associated virus-driven shRNA in mice fed HFD reverses the insulin-sensitizing effects of hepatic Ttp deletion. Thus, hepatic TTP posttranscriptionally regulates systemic insulin sensitivity in diabetes through liver-derived FGF21.
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Affiliation(s)
- Konrad T Sawicki
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
| | - Hsiang-Chun Chang
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
| | - Jason S Shapiro
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
| | - Marina Bayeva
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
| | - Adam De Jesus
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
| | - Brian N Finck
- Geriatrics and Nutritional Sciences, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jason A Wertheim
- Department of Surgery, Northwestern University, Chicago, Illinois, USA
| | - Perry J Blackshear
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | - Hossein Ardehali
- Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University, Chicago, Illinois, USA
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19
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Brown JH, Das P, DiVito MD, Ivancic D, Tan LP, Wertheim JA. Nanofibrous PLGA electrospun scaffolds modified with type I collagen influence hepatocyte function and support viability in vitro. Acta Biomater 2018; 73:217-227. [PMID: 29454157 PMCID: PMC5985221 DOI: 10.1016/j.actbio.2018.02.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [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: 08/24/2017] [Revised: 01/23/2018] [Accepted: 02/08/2018] [Indexed: 02/06/2023]
Abstract
A major challenge of maintaining primary hepatocytes in vitro is progressive loss of hepatocyte-specific functions, such as protein synthesis and cytochrome P450 (CYP450) catalytic activity. We developed a three-dimensional (3D) nanofibrous scaffold made from poly(l-lactide-co-glycolide) (PLGA) polymer using a newly optimized wet electrospinning technique that resulted in a highly porous structure that accommodated inclusion of primary human hepatocytes. Extracellular matrix (ECM) proteins (type I collagen or fibronectin) at varying concentrations were chemically linked to electrospun PLGA using amine coupling to develop an in vitro culture system containing the minimal essential ECM components of the liver micro-environment that preserve hepatocyte function in vitro. Cell-laden nanofiber scaffolds were tested in vitro to maintain hepatocyte function over a two-week period. Incorporation of type I collagen onto PLGA scaffolds (PLGA-Chigh: 100 µg/mL) led to 10-fold greater albumin secretion, 4-fold higher urea synthesis, and elevated transcription of hepatocyte-specific CYP450 genes (CYP3A4, 3.5-fold increase and CYP2C9, 3-fold increase) in primary human hepatocytes compared to the same cells grown within unmodified PLGA scaffolds over two weeks. These indices, measured using collagen-bonded scaffolds, were also higher than scaffolds coupled to fibronectin or an ECM control sandwich culture composed of type I collagen and Matrigel. Induction of CYP2C9 activity was also higher in these same type I collagen PLGA scaffolds compared to other ECM-modified or unmodified PLGA constructs and was equivalent to the ECM control at 7 days. Together, we demonstrate a minimalist ECM-based 3D synthetic scaffold that accommodates primary human hepatocyte inclusion into the matrix, maintains long-term in vitro survival and stimulates function, which can be attributed to coupling of type I collagen. STATEMENT OF SIGNIFICANCE Culturing primary hepatocytes within a three-dimensional (3D) structure that mimics the natural liver environment is a promising strategy for extending the function and viability of hepatocytes in vitro. In the present study we generate porous PLGA nanofibers, that are chemically modified with extracellular matrix proteins, to serve as 3D scaffolds for the in vitro culture of primary human hepatocytes. Our findings demonstrate that the use of ECM proteins, especially type I collagen, in a porous 3D environment helps to improve the synthetic function of primary hepatocytes over time. We believe the work presented within will provide insights to readers for drug toxicity and tissue engineering applications.
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Affiliation(s)
- Jessica H Brown
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Prativa Das
- Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Michael D DiVito
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - David Ivancic
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Lay Poh Tan
- Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 Singapore..
| | - Jason A Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, United States; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL 60612, United States; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, IL 60611, United States; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, United States.
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20
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Friedrich EE, Lanier ST, Niknam-Bienia S, Arenas GA, Rajendran D, Wertheim JA, Galiano RD. Residual sodium dodecyl sulfate in decellularized muscle matrices leads to fibroblast activation in vitro and foreign body response in vivo. J Tissue Eng Regen Med 2017; 12:e1704-e1715. [PMID: 29084373 DOI: 10.1002/term.2604] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/01/2017] [Accepted: 10/03/2017] [Indexed: 12/22/2022]
Abstract
Detergents such as sodium dodecyl sulfate (SDS) are commonly used to extract cells from tissues in a process called "decellularization". Residual SDS is difficult to completely remove and may lead to an undesirable host response towards an implanted biomaterial. In this study, we developed a modification for SDS cell extraction from muscle equally efficient to previous methods but leading to significantly less residual SDS remnants in the matrices. Muscle-derived matrices were prepared via 2 SDS-based decellularization methods, which led to removal of either 81.4% or 98.4% of the SDS. In vitro, matrices were seeded with thp1 macrophages and primary human foreskin fibroblasts. By Day 2, both matrices demonstrated similar macrophage polarization; however, fibroblasts cultured on matrices with greater residual SDS expressed higher levels of mRNA associated with fibroblast activation: α-smooth muscle actin and connective tissue growth factor. In vivo, Collagen I gels spiked with increasing concentrations of SDS displayed a corresponding decrease in cell infiltration when implanted subcutaneously in rats after 4 days. Finally, as a model for muscle regeneration, matrices produced by each method were implanted in rat latissimus dorsi defects. At POD 30 greater levels of IL-1β mRNA were present in defects treated with matrices containing higher levels of SDS, indicating a more severe inflammatory response. Although matrices containing higher levels of residual SDS became encapsulated by POD 30 and showed evidence of a foreign body response, matrices with the lower levels of SDS integrated into the defect area with lower levels of inflammatory and fibrosis-related gene expression.
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Affiliation(s)
- Emily E Friedrich
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Steven T Lanier
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Solmaz Niknam-Bienia
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Gabriel A Arenas
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Divya Rajendran
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jason A Wertheim
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA.,Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA.,Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
| | - Robert D Galiano
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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21
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Jiang B, Suen R, Wang JJ, Zhang ZJ, Wertheim JA, Ameer GA. Vascular scaffolds with enhanced antioxidant activity inhibit graft calcification. Biomaterials 2017; 144:166-175. [PMID: 28841463 DOI: 10.1016/j.biomaterials.2017.08.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [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: 05/24/2017] [Revised: 08/08/2017] [Accepted: 08/13/2017] [Indexed: 10/19/2022]
Abstract
There is a need for off-the-shelf, small-diameter vascular grafts that are safe and exhibit high long-term patency. Decellularized tissues can potentially be used as vascular grafts; however, thrombogenic and unpredictable remodeling properties such as intimal hyperplasia and calcification are concerns that hinder their clinical use. The objective of this study was to investigate the long-term function and remodeling of extracellular matrix (ECM)-based vascular grafts composited with antioxidant poly(1, 8-octamethylene-citrate-co-cysteine) (POCC) with or without immobilized heparin. Rat aortas were decellularized to create the following vascular grafts: 1) ECM hybridized with POCC (Poly-ECM), 2) Poly-ECM subsequently functionalized with heparin (Poly-ECM-Hep), and 3) non-modified vascular ECM. Grafts were evaluated as interposition grafts in the abdominal aorta of adult rats at three months. All grafts displayed antioxidant activity, were patent, and exhibited minimal intramural cell infiltration with varying degrees of calcification. Areas of calcification co-localized with osteochondrogenic differentiation of vascular smooth muscle cells, lipid peroxidation, oxidized DNA damage, and cell apoptosis, suggesting an important role for oxidative stress in the calcification of grafts. The extent of calcification within grafts was inversely proportional to their antioxidant activity: Poly-ECM-Hep > ECM > Poly-ECM. The incorporation of antioxidants into vascular grafts may be a viable strategy to inhibit degenerative changes.
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Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Rachel Suen
- Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, 60208, USA
| | - Jiao-Jing Wang
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Zheng J Zhang
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Jason A Wertheim
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, 60612, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA.
| | - Guillermo A Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, IL, 60208, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA; Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA.
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22
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Giwa S, Lewis JK, Alvarez L, Langer R, Roth AE, Church GM, Markmann JF, Sachs DH, Chandraker A, Wertheim JA, Rothblatt M, Boyden ES, Eidbo E, Lee WPA, Pomahac B, Brandacher G, Weinstock DM, Elliott G, Nelson D, Acker JP, Uygun K, Schmalz B, Weegman BP, Tocchio A, Fahy GM, Storey KB, Rubinsky B, Bischof J, Elliott JAW, Woodruff TK, Morris GJ, Demirci U, Brockbank KGM, Woods EJ, Ben RN, Baust JG, Gao D, Fuller B, Rabin Y, Kravitz DC, Taylor MJ, Toner M. The promise of organ and tissue preservation to transform medicine. Nat Biotechnol 2017; 35:530-542. [PMID: 28591112 PMCID: PMC5724041 DOI: 10.1038/nbt.3889] [Citation(s) in RCA: 298] [Impact Index Per Article: 42.6] [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: 10/31/2016] [Accepted: 04/28/2017] [Indexed: 02/06/2023]
Abstract
The ability to replace organs and tissues on demand could save or improve millions of lives each year globally and create public health benefits on par with curing cancer. Unmet needs for organ and tissue preservation place enormous logistical limitations on transplantation, regenerative medicine, drug discovery, and a variety of rapidly advancing areas spanning biomedicine. A growing coalition of researchers, clinicians, advocacy organizations, academic institutions, and other stakeholders has assembled to address the unmet need for preservation advances, outlining remaining challenges and identifying areas of underinvestment and untapped opportunities. Meanwhile, recent discoveries provide proofs of principle for breakthroughs in a family of research areas surrounding biopreservation. These developments indicate that a new paradigm, integrating multiple existing preservation approaches and new technologies that have flourished in the past 10 years, could transform preservation research. Capitalizing on these opportunities will require engagement across many research areas and stakeholder groups. A coordinated effort is needed to expedite preservation advances that can transform several areas of medicine and medical science.
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Affiliation(s)
- Sebastian Giwa
- Organ Preservation Alliance, NASA Research Park, Moffett Field, California, USA
- Sylvatica Biotech, Inc., Charleston, South Carolina, USA
- Ossium Health, San Francisco, California, USA
| | - Jedediah K Lewis
- Organ Preservation Alliance, NASA Research Park, Moffett Field, California, USA
| | - Luis Alvarez
- Regenerative Biology Research Group, Cancer and Developmental Biology Laboratory, National Cancer Institute, Bethesda, Maryland, USA
- Walter Reed National Military Medical Center, Bethesda, Maryland, USA
- Department of Chemistry and Life Science, United States Military Academy, West Point, New York, USA
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Alvin E Roth
- Department of Economics, Stanford University, Stanford, California, USA
| | - George M Church
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA
| | - James F Markmann
- Division of Transplant Surgery, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - David H Sachs
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York, USA
| | - Anil Chandraker
- American Society of Transplantation, Mt. Laurel, New Jersey, USA
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jason A Wertheim
- American Society of Transplant Surgeons, Arlington Virginia, USA
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | | | - Edward S Boyden
- MIT Media Lab and McGovern Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Elling Eidbo
- Association of Organ Procurement Organizations, Vienna, Virginia, USA
| | - W P Andrew Lee
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Bohdan Pomahac
- Department of Surgery, Division of Plastic Surgery, Brigham and Women's Hospital/Harvard Medical School, Boston, Massachusetts, USA
| | - Gerald Brandacher
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David M Weinstock
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Gloria Elliott
- Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - David Nelson
- Department of Transplant Medicine, Nazih Zuhdi Transplant Institute, Integris Baptist Medical Center, Oklahoma City, Oklahoma, USA
| | - Jason P Acker
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
- Society for Cryobiology, Baltimore, Maryland, USA
| | - Korkut Uygun
- Department of Surgery, Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Boris Schmalz
- Organ Preservation Alliance, NASA Research Park, Moffett Field, California, USA
- Max Planck Institute of Psychiatry, Munich, Germany
| | - Brad P Weegman
- Organ Preservation Alliance, NASA Research Park, Moffett Field, California, USA
- Sylvatica Biotech, Inc., Charleston, South Carolina, USA
| | - Alessandro Tocchio
- Organ Preservation Alliance, NASA Research Park, Moffett Field, California, USA
- Department of Radiology, Stanford School of Medicine, Stanford, California, USA
| | - Greg M Fahy
- 21st Century Medicine, Fontana, California, USA
| | - Kenneth B Storey
- Institute of Biochemistry, Carleton University, Ottawa, Ontario, Canada
| | - Boris Rubinsky
- Department of Mechanical Engineering, University of California Berkeley, Berkeley, California, USA
| | - John Bischof
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota, USA
| | - Janet A W Elliott
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Teresa K Woodruff
- Division of Obstetrics and Gynecology-Reproductive Science in Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | | | - Utkan Demirci
- Department of Radiology, Stanford School of Medicine, Stanford, California, USA
- Department of Electrical Engineering (by courtesy), Stanford, California, USA
| | | | - Erik J Woods
- Ossium Health, San Francisco, California, USA
- Society for Cryobiology, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Robert N Ben
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - John G Baust
- Department of Biological Sciences, Binghamton University, State University of New York, Binghamton, New York, USA
| | - Dayong Gao
- Society for Cryobiology, Baltimore, Maryland, USA
- Department of Mechanical Engineering, University of Washington, Seattle, Washington, USA
| | - Barry Fuller
- Division of Surgery &Interventional Science, University College Medical School, Royal Free Hospital Campus, London, UK
| | - Yoed Rabin
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | | | - Michael J Taylor
- Sylvatica Biotech, Inc., Charleston, South Carolina, USA
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
- Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - Mehmet Toner
- Department of Surgery, Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
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23
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Uzarski JS, DiVito MD, Wertheim JA, Miller WM. Essential design considerations for the resazurin reduction assay to noninvasively quantify cell expansion within perfused extracellular matrix scaffolds. Biomaterials 2017; 129:163-175. [PMID: 28343003 DOI: 10.1016/j.biomaterials.2017.02.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [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: 12/22/2016] [Accepted: 02/11/2017] [Indexed: 12/29/2022]
Abstract
Precise measurement of cellularity within bioartificial tissues and extracellular matrix (ECM) scaffolds is necessary to augment rigorous characterization of cellular behavior, as accurate benchmarking of tissue function to cell number allows for comparison of data across experiments and between laboratories. Resazurin, a soluble dye that is reduced to highly fluorescent resorufin in proportion to the metabolic activity of a cell population, is a valuable, noninvasive tool to measure cell number. We investigated experimental conditions in which resazurin reduction is a reliable indicator of cellularity within three-dimensional (3D) ECM scaffolds. Using three renal cell populations, we demonstrate that correlation of viable cell numbers with the rate of resorufin generation may deviate from linearity at higher cell densities, lower resazurin working volumes, or longer incubation times that all contribute to depleting the pool of resazurin. In conclusion, while the resazurin reduction assay provides a powerful, noninvasive readout of metrics enumerating cellularity and growth within ECM scaffolds, assay conditions may strongly influence its applicability for accurate quantification of cell number. The approach and methodological recommendations presented herein may be used as a guide for application-specific optimization of this assay to obtain rigorous and accurate measurement of cellular content in bioengineered tissues.
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Affiliation(s)
- Joseph S Uzarski
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Michael D DiVito
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Jason A Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL 60612, USA; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA.
| | - William M Miller
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA; Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
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24
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Oxburgh L, Carroll TJ, Cleaver O, Gossett DR, Hoshizaki DK, Hubbell JA, Humphreys BD, Jain S, Jensen J, Kaplan DL, Kesselman C, Ketchum CJ, Little MH, McMahon AP, Shankland SJ, Spence JR, Valerius MT, Wertheim JA, Wessely O, Zheng Y, Drummond IA. (Re)Building a Kidney. J Am Soc Nephrol 2017; 28:1370-1378. [PMID: 28096308 DOI: 10.1681/asn.2016101077] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
(Re)Building a Kidney is a National Institute of Diabetes and Digestive and Kidney Diseases-led consortium to optimize approaches for the isolation, expansion, and differentiation of appropriate kidney cell types and the integration of these cells into complex structures that replicate human kidney function. The ultimate goals of the consortium are two-fold: to develop and implement strategies for in vitro engineering of replacement kidney tissue, and to devise strategies to stimulate regeneration of nephrons in situ to restore failing kidney function. Projects within the consortium will answer fundamental questions regarding human gene expression in the developing kidney, essential signaling crosstalk between distinct cell types of the developing kidney, how to derive the many cell types of the kidney through directed differentiation of human pluripotent stem cells, which bioengineering or scaffolding strategies have the most potential for kidney tissue formation, and basic parameters of the regenerative response to injury. As these projects progress, the consortium will incorporate systematic investigations in physiologic function of in vitro and in vivo differentiated kidney tissue, strategies for engraftment in experimental animals, and development of therapeutic approaches to activate innate reparative responses.
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Affiliation(s)
- Leif Oxburgh
- Center for Molecular Medicine, Maine Medical Center Research Institute, Scarborough, Maine;
| | - Thomas J Carroll
- Department of Molecular Biology and.,Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ondine Cleaver
- Department of Molecular Biology and.,Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Daniel R Gossett
- Division of Kidney, Urologic, & Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Deborah K Hoshizaki
- Division of Kidney, Urologic, & Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jeffrey A Hubbell
- Institute for Molecular Engineering, University of Chicago, Chicago, Illinois
| | - Benjamin D Humphreys
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri
| | - Sanjay Jain
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri
| | - Jan Jensen
- Department of Stem Cell Biology and Regenerative Medicine and.,Trailhead Biosystems, Inc, Cleveland, Ohio
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Carl Kesselman
- Epstein Department of Industrial and Systems Engineering and Information Sciences Institute, Viterbi School of Engineering and.,Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Christian J Ketchum
- Division of Kidney, Urologic, & Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Melissa H Little
- Cell Biology Theme, Murdoch Childrens Research Institute, Parkville, Melbourne, Australia.,Department of Pediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Melbourne, Australia
| | - Andrew P McMahon
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | | | - Jason R Spence
- Department of Internal Medicine, Division of Gastroenterology and.,Department of Cell and Developmental Biology and Center for Organogenesis, University of Michigan Medical School, Ann Arbor, Michigan
| | - M Todd Valerius
- Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Jason A Wertheim
- Department of Surgery, Jesse Brown VA Medical Center, and.,Comprehensive Transplant Center, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Oliver Wessely
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Ying Zheng
- Department of Bioengineering, Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle
| | - Iain A Drummond
- Nephrology Division, Massachusetts General Hospital, Charlestown, Massachusetts
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25
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Jiang B, Suen R, Wertheim JA, Ameer GA. Targeting Heparin to Collagen within Extracellular Matrix Significantly Reduces Thrombogenicity and Improves Endothelialization of Decellularized Tissues. Biomacromolecules 2016; 17:3940-3948. [PMID: 27936727 DOI: 10.1021/acs.biomac.6b01330] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Thrombosis within small-diameter vascular grafts limits the development of bioartificial, engineered vascular conduits, especially those derived from extracellular matrix (ECM). Here we describe an easy-to-implement strategy to chemically modify vascular ECM by covalently linking a collagen binding peptide (CBP) to heparin to form a heparin derivative (CBP-heparin) that selectively binds a subset of collagens. Modification of ECM with CBP-heparin leads to increased deposition of functional heparin (by ∼7.2-fold measured by glycosaminoglycan composition) and a corresponding reduction in platelet binding (>70%) and whole blood clotting (>80%) onto the ECM. Furthermore, addition of CBP-heparin to the ECM stabilizes long-term endothelial cell attachment to the lumen of ECM-derived vascular conduits, potentially through recruitment of heparin-binding growth factors that ultimately improve the durability of endothelialization in vitro. Overall, our findings provide a simple yet effective method to increase deposition of functional heparin on the surface of ECM-based vascular grafts and thereby minimize thrombogenicity of decellularized tissue, overcoming a significant challenge in tissue engineering of bioartificial vessels and vascularized organs.
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Affiliation(s)
- Bin Jiang
- Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois 60611, United States
| | | | - Jason A Wertheim
- Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois 60611, United States.,Department of Surgery, Jesse Brown VA Medical Center , Chicago, Illinois 60612, United States
| | - Guillermo A Ameer
- Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois 60611, United States
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26
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Affiliation(s)
- Jason A. Wertheim
- Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL; Chemistry of Life Processes Institute and Biomedical Engineering Department, Northwestern University, Evanston, IL; and Simpson Querrey, Institute, Northwestern University, Chicago, IL; Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
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27
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Wang B, Jakus AE, Baptista PM, Soker S, Soto-Gutierrez A, Abecassis MM, Shah RN, Wertheim JA. Functional Maturation of Induced Pluripotent Stem Cell Hepatocytes in Extracellular Matrix-A Comparative Analysis of Bioartificial Liver Microenvironments. Stem Cells Transl Med 2016; 5:1257-67. [PMID: 27421950 PMCID: PMC4996436 DOI: 10.5966/sctm.2015-0235] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [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: 09/10/2015] [Accepted: 03/07/2016] [Indexed: 01/12/2023] Open
Abstract
The ability of two three-dimensional bioscaffold systems to reverse the primary limitations of induced pluripotent stem cell (iPSC)-derived hepatocytes was compared. Proliferation and function of iPSC hepatocytes were significantly enhanced when cultured within scaffolds made from extracellular matrix (ECM). This ECM scaffold enhanced phenotypic maturation of iPSC hepatocytes compared with other platforms, likely owing to its biologically diverse makeup. Induced pluripotent stem cells (iPSCs) are new diagnostic and potentially therapeutic tools to model disease and assess the toxicity of pharmaceutical medications. A common limitation of cell lineages derived from iPSCs is a blunted phenotype compared with fully developed, endogenous cells. We examined the influence of novel three-dimensional bioartificial microenvironments on function and maturation of hepatocyte-like cells differentiated from iPSCs and grown within an acellular, liver-derived extracellular matrix (ECM) scaffold. In parallel, we also compared a bioplotted poly-l-lactic acid (PLLA) scaffold that allows for cell growth in three dimensions and formation of cell-cell contacts but is infused with type I collagen (PLLA-collagen scaffold) alone as a “deconstructed” control scaffold with narrowed biological diversity. iPSC-derived hepatocytes cultured within both scaffolds remained viable, became polarized, and formed bile canaliculi-like structures; however, cells grown within ECM scaffolds had significantly higher P450 (CYP2C9, CYP3A4, CYP1A2) mRNA levels and metabolic enzyme activity compared with iPSC hepatocytes grown in either bioplotted PLLA collagen or Matrigel sandwich control culture. Additionally, the rate of albumin synthesis approached the level of primary cryopreserved hepatocytes with lower transcription of fetal-specific genes, α-fetoprotein and CYP3A7, compared with either PLLA-collagen scaffolds or sandwich culture. These studies show that two acellular, three-dimensional culture systems increase the function of iPSC-derived hepatocytes. However, scaffolds derived from ECM alone induced further hepatocyte maturation compared with bioplotted PLLA-collagen scaffolds. This effect is likely mediated by the complex composition of ECM scaffolds in contrast to bioplotted scaffolds, suggesting their utility for in vitro hepatocyte assays or drug discovery. Significance Through the use of novel technology to develop three-dimensional (3D) scaffolds, the present study demonstrated that hepatocyte-like cells derived via induced pluripotent stem cell (iPSC) technology mature on 3D extracellular matrix scaffolds as a result of 3D matrix structure and scaffold biology. The result is an improved hepatic phenotype with increased synthetic and catalytic potency, an improvement on the blunted phenotype of iPSC-derived hepatocytes, a critical limitation of iPSC technology. These findings provide insight into the influence of 3D microenvironments on the viability, proliferation, and function of iPSC hepatocytes to yield a more mature population of cells for cell toxicity studies and disease modeling.
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Affiliation(s)
- Bo Wang
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Adam E Jakus
- Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois, USA Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois, USA
| | - Pedro M Baptista
- Instituto de Investigación Sanitaria de Aragón, Centro de Investigación Biomédica de Aragón, Zaragoza, Spain Centro de Investigación Biomédica en Red en el Área temática de Enfermedades Hepáticas (CIBERehd), Zaragoza, Spain Fundacion ARAID, Zaragoza, Spain
| | - Shay Soker
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Alejandro Soto-Gutierrez
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA Department of Pathology, Thomas E. Starzl Transplantation Institute, and McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Michael M Abecassis
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA Department of Surgery, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ramille N Shah
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois, USA Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois, USA Department of Surgery, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, USA
| | - Jason A Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois, USA Department of Surgery, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, USA Department of Surgery, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois, USA
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Jiang B, Suen R, Wang JJ, Zhang ZJ, Wertheim JA, Ameer GA. Tissue Engineering: Mechanocompatible Polymer-Extracellular-Matrix Composites for Vascular Tissue Engineering (Adv. Healthcare Mater. 13/2016). Adv Healthc Mater 2016. [DOI: 10.1002/adhm.201670067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Rachel Suen
- Weinberg College of Arts and Sciences; Northwestern University; Evanston IL 60208 USA
| | - Jiao-Jing Wang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Zheng J. Zhang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Jason A. Wertheim
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Department of Surgery; Jesse Brown VA Medical Center; Chicago IL 60612 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA. Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
| | - Guillermo A. Ameer
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA
- Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
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Jiang B, Suen R, Wang JJ, Zhang ZJ, Wertheim JA, Ameer GA. Mechanocompatible Polymer-Extracellular-Matrix Composites for Vascular Tissue Engineering. Adv Healthc Mater 2016; 5:1594-605. [PMID: 27109033 DOI: 10.1002/adhm.201501003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 12/10/2015] [Revised: 03/03/2016] [Indexed: 11/09/2022]
Abstract
Small-diameter vascular grafts developed from vascular extracellular matrix (ECM) can potentially be used for bypass surgeries and other vascular reconstruction and repair procedures. The addition of heparin to the ECM improves graft hemocompatibility but often involves chemical cross-linking, which increases ECM mechanical stiffness compared to native arteries. Herein, the importance of maintaining ECM mechanocompatibility is demonstrated, and a mechanocompatible strategy to immobilize heparin onto the ECM via a biodegradable elastomer is described. Specifically, poly(1,8-octamethylene citrate)-co-cysteine is hybridized to the ECM, forming a polymer-ECM composite that allows for heparin immobilization via maleimide-thiol "click" chemistry. Heparinized composites reduce platelet adhesion by >60% in vitro, without altering the elastic modulus of the ECM. In a rat abdominal aortic interposition model, intimal hyperplasia in heparinized mechanocompatible grafts is 65% lower when compared to ECM-only control grafts at four weeks. In contrast, grafts that are heparinized with carbodiimide chemistry exhibit increased intimal hyperplasia (4.2-fold) and increased macrophage infiltration (3.5-fold) compared to ECM-only control grafts. All grafts show similar, partial endothelial cell coverage and little to no ECM remodeling. Overall, a mechanocompatible strategy to improve ECM thromboresistance is described and the importance of ECM mechanical properties for proper in vivo graft performance is highlighted.
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Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Rachel Suen
- Weinberg College of Arts and Sciences; Northwestern University; Evanston IL 60208 USA
| | - Jiao-Jing Wang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Zheng J. Zhang
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
| | - Jason A. Wertheim
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL 60611 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Department of Surgery; Jesse Brown VA Medical Center; Chicago IL 60612 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA. Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
| | - Guillermo A. Ameer
- Biomedical Engineering Department; Northwestern University; Evanston IL 60208 USA
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago IL 60611 USA
- Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA
- Simpson Querrey Institute; Northwestern University; Chicago IL 60611 USA
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Tsukamoto A, Abbot SE, Kadyk LC, DeWitt ND, Schaffer DV, Wertheim JA, Whittlesey KJ, Werner MJ. Challenging Regeneration to Transform Medicine. Stem Cells Transl Med 2015; 5:1-7. [PMID: 26607174 DOI: 10.5966/sctm.2015-0180] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 09/28/2015] [Indexed: 12/14/2022] Open
Abstract
UNLABELLED The aging population in the U.S. and other developed countries has led to a large increase in the number of patients suffering from degenerative diseases. Transplantation surgery has been a successful therapeutic option for certain patients; however, the availability of suitable donor organs and tissues significantly limits the number of patients who can benefit from this approach. Regenerative medicine has witnessed numerous recent and spectacular advances, making the repair or replacement of dysfunctional organs and tissues an achievable goal. Public-private partnerships and government policies and incentives would further catalyze the development of universally available donor tissues, resulting in broad medical and economic benefits. This article describes a Regenerative Medicine Grand Challenge that the Alliance for Regenerative Medicine recently shared with the White House's Office of Science and Technology Policy in response to a White House call to action in scientific disciplines suggesting that the development of "universal donor tissues" should be designated as a Regenerative Medicine Grand Challenge. Such a designation would raise national awareness of the potential of regenerative medicine to address the unmet needs of many diseases and would stimulate the scientific partnerships and investments in technology needed to expedite this goal. Here we outline key policy changes and technological challenges that must be addressed to achieve the promise of a major breakthrough in the treatment of degenerative disease. A nationalized effort and commitment to develop universal donor tissues could realize this goal within 10 years and along the way result in significant innovation in manufacturing technologies. SIGNIFICANCE Regenerative therapies, in which dysfunctional or degenerating cells, tissues, or organs are repaired or replaced, have the potential to cure chronic degenerative diseases. Such treatments are limited by a shortage of donor organs and tissues and the need for immune suppression to prevent rejection. This article proposes a 21st Century Grand Challenge that would address this significant medical need by coordinating a national effort to convene the multidisciplinary expertise needed to manufacture functional and engraftable cells, tissues, or organs that could be made available to any patient without significant risk of rejection-so-called universal donor tissues.
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Affiliation(s)
| | | | - Lisa C Kadyk
- California Institute for Regenerative Medicine, San Francisco, California, USA
| | - Natalie D DeWitt
- California Institute for Regenerative Medicine, San Francisco, California, USA
| | - David V Schaffer
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California, USA Department of Bioengineering, University of California, Berkeley, Berkeley, California, USA Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
| | - Jason A Wertheim
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Kevin J Whittlesey
- California Institute for Regenerative Medicine, San Francisco, California, USA
| | - Michael J Werner
- Holland & Knight, Washington, D.C., USA Alliance for Regenerative Medicine, Washington, D.C., USA
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Jiang B, Jen M, Perrin L, Wertheim JA, Ameer GA. SIRT1 Overexpression Maintains Cell Phenotype and Function of Endothelial Cells Derived from Induced Pluripotent Stem Cells. Stem Cells Dev 2015; 24:2740-5. [PMID: 26413932 DOI: 10.1089/scd.2015.0191] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Endothelial cells (ECs) that are differentiated from induced pluripotent stem cells (iPSCs) can be used in establishing disease models for personalized drug discovery or developing patient-specific vascularized tissues or organoids. However, a number of technical challenges are often associated with iPSC-ECs in culture, including instability of the endothelial phenotype and limited cell proliferative capacity over time. Early senescence is believed to be the primary mechanism underlying these limitations. Sirtuin1 (SIRT1) is an NAD(+)-dependent deacetylase involved in the regulation of cell senescence, redox state, and inflammatory status. We hypothesize that overexpression of the SIRT1 gene in iPSC-ECs will maintain EC phenotype, function, and proliferative capacity by overcoming early cell senescence. SIRT1 gene was packaged into a lentiviral vector (LV-SIRT1) and transduced into iPSC-ECs at passage 4. Beginning with passage 5, iPSC-ECs exhibited a fibroblast-like morphology, whereas iPSC-ECs overexpressing SIRT1 maintained EC cobblestone morphology. SIRT1 overexpressing iPSC-ECs also exhibited a higher percentage of canonical markers of endothelia (LV-SIRT1 61.8% CD31(+) vs. LV-empty 31.7% CD31(+), P < 0.001; LV-SIRT1 46.3% CD144(+) vs. LV-empty 20.5% CD144(+), P < 0.02), with a higher nitric oxide synthesis, lower β-galactosidase production indicating decreased senescence (3.4% for LV-SIRT1 vs. 38.6% for LV-empty, P < 0.001), enhanced angiogenesis, increased deacetylation activity, and higher proliferation rate. SIRT1 overexpressing iPSC-ECs continued to proliferate through passage 9 with high purity of EC-like characteristics, while iPSC-ECs without SIRT1 overexpression became senescent after passage 5. Taken together, SIRT1 overexpression in iPSC-ECs maintains EC phenotype, improves EC function, and extends cell lifespan, overcoming critical hurdles associated with the use of iPSC-ECs in translational research.
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Affiliation(s)
- Bin Jiang
- 1 Biomedical Engineering Department, Northwestern University , Evanston, Illinois.,2 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois.,3 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois
| | - Michele Jen
- 1 Biomedical Engineering Department, Northwestern University , Evanston, Illinois
| | - Louisiane Perrin
- 1 Biomedical Engineering Department, Northwestern University , Evanston, Illinois
| | - Jason A Wertheim
- 1 Biomedical Engineering Department, Northwestern University , Evanston, Illinois.,2 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois.,3 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois.,4 Department of Surgery, Jesse Brown VA Medical Center , Chicago, Illinois.,5 Chemistry of Life Processes Institute, Northwestern University , Evanston, Illinois.,6 Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University , Chicago, Illinois
| | - Guillermo A Ameer
- 1 Biomedical Engineering Department, Northwestern University , Evanston, Illinois.,3 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois.,5 Chemistry of Life Processes Institute, Northwestern University , Evanston, Illinois.,6 Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University , Chicago, Illinois
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Li W, Ma G, Brazile B, Li N, Dai W, Butler JR, Claude AA, Wertheim JA, Liao J, Wang B. Investigating the Potential of Amnion-Based Scaffolds as a Barrier Membrane for Guided Bone Regeneration. Langmuir 2015; 31:8642-8653. [PMID: 26158559 DOI: 10.1021/acs.langmuir.5b02362] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Guided bone regeneration is a new concept of large bone defect therapy, which employs a barrier membrane to afford a protected room for osteogenesis and prevent the invasion of fibroblasts. In this study, we developed a novel barrier membrane made from lyophilized multilayered acellular human amnion membranes (AHAM). After decellularization, the AHAM preserved the structural and biomechanical integrity of the amnion extracellular matrix (ECM). The AHAM also showed minimal toxic effects when cocultured with mesenchymal stem cells (MSCs), as evidenced by high cell density, good cell viability, and efficient osteogenic differentiation after 21-day culturing. The effectiveness of the multilayered AHAM in guiding bone regeneration was evaluated using an in vivo rat tibia defect model. After 6 weeks of surgery, the multilayered AHAM showed great efficiency in acting as a shield to avoid the invasion of the fibrous tissues, stabilizing the bone grafts and inducing the massive bone growth. We hence concluded that the advantages of the lyophilized multilayered AHAM barrier membrane are as follows: preservation of the structural and mechanical properties of the amnion ECM, easiness for preparation and handling, flexibility in adjusting the thickness and mechanical properties to suit the application, and efficiency in inducing bone growth and avoiding fibrous tissues invasion.
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Affiliation(s)
- Wuwei Li
- †Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
| | - Guowu Ma
- †Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
| | - Bryn Brazile
- ‡Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Nan Li
- †Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
| | - Wei Dai
- §Department of Operation Room, The First Affiliated Hospital, Dalian Medical University, Liaoning 116001, China
| | - J Ryan Butler
- ‡Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Andrew A Claude
- ‡Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Jason A Wertheim
- ∥Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Jun Liao
- ‡Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Bo Wang
- †Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Liaoning 116001, China
- ∥Comprehensive Transplant Center and Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
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Uzarski JS, Su J, Xie Y, Zhang ZJ, Ward HH, Wandinger-Ness A, Miller WM, Wertheim JA. Epithelial Cell Repopulation and Preparation of Rodent Extracellular Matrix Scaffolds for Renal Tissue Development. J Vis Exp 2015:e53271. [PMID: 26327609 DOI: 10.3791/53271] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This protocol details the generation of acellular, yet biofunctional, renal extracellular matrix (ECM) scaffolds that are useful as small-scale model substrates for organ-scale tissue development. Sprague Dawley rat kidneys are cannulated by inserting a catheter into the renal artery and perfused with a series of low-concentration detergents (Triton X-100 and sodium dodecyl sulfate (SDS)) over 26 hr to derive intact, whole-kidney scaffolds with intact perfusable vasculature, glomeruli, and renal tubules. Following decellularization, the renal scaffold is placed inside a custom-designed perfusion bioreactor vessel, and the catheterized renal artery is connected to a perfusion circuit consisting of: a peristaltic pump; tubing; and optional probes for pH, dissolved oxygen, and pressure. After sterilizing the scaffold with peracetic acid and ethanol, and balancing the pH (7.4), the kidney scaffold is prepared for seeding via perfusion of culture medium within a large-capacity incubator maintained at 37 °C and 5% CO2. Forty million renal cortical tubular epithelial (RCTE) cells are injected through the renal artery, and rapidly perfused through the scaffold under high flow (25 ml/min) and pressure (~230 mmHg) for 15 min before reducing the flow to a physiological rate (4 ml/min). RCTE cells primarily populate the tubular ECM niche within the renal cortex, proliferate, and form tubular epithelial structures over seven days of perfusion culture. A 44 µM resazurin solution in culture medium is perfused through the kidney for 1 hr during medium exchanges to provide a fluorometric, redox-based metabolic assessment of cell viability and proliferation during tubulogenesis. The kidney perfusion bioreactor permits non-invasive sampling of medium for biochemical assessment, and multiple inlet ports allow alternative retrograde seeding through the renal vein or ureter. These protocols can be used to recellularize kidney scaffolds with a variety of cell types, including vascular endothelial, tubular epithelial, and stromal fibroblasts, for rapid evaluation within this system.
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Affiliation(s)
- Joseph S Uzarski
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University; Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Jimmy Su
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University; Department of Surgery, Feinberg School of Medicine, Northwestern University; Department of Biomedical Engineering, Northwestern University; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University
| | - Yan Xie
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University; Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Zheng J Zhang
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University; Department of Surgery, Feinberg School of Medicine, Northwestern University
| | - Heather H Ward
- Department of Internal Medicine, University of New Mexico HSC
| | | | - William M Miller
- Department of Chemical and Biological Engineering, Northwestern University; Chemistry of Life Processes Institute, Northwestern University
| | - Jason A Wertheim
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University; Department of Surgery, Feinberg School of Medicine, Northwestern University; Department of Biomedical Engineering, Northwestern University; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University; Chemistry of Life Processes Institute, Northwestern University; Department of Surgery, Jesse Brown VA Medical Center;
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Uzarski JS, Bijonowski BM, Wang B, Ward HH, Wandinger-Ness A, Miller WM, Wertheim JA. Dual-Purpose Bioreactors to Monitor Noninvasive Physical and Biochemical Markers of Kidney and Liver Scaffold Recellularization. Tissue Eng Part C Methods 2015; 21:1032-43. [PMID: 25929317 DOI: 10.1089/ten.tec.2014.0665] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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] [Indexed: 12/29/2022] Open
Abstract
Analysis of perfusion-based bioreactors for organ engineering and a detailed evaluation of physical and biochemical parameters that measure dynamic changes within maturing cell-laden scaffolds are critical components of ex vivo tissue development that remain understudied topics in the tissue and organ engineering literature. Intricately designed bioreactors that house developing tissue are critical to properly recapitulate the in vivo environment, deliver nutrients within perfused media, and monitor physiological parameters of tissue development. Herein, we provide an in-depth description and analysis of two dual-purpose perfusion bioreactors that improve upon current bioreactor designs and enable comparative analyses of ex vivo scaffold recellularization strategies and cell growth performance during long-term maintenance culture of engineered kidney or liver tissues. Both bioreactors are effective at maximizing cell seeding of small-animal organ scaffolds and maintaining cell survival in extended culture. We further demonstrate noninvasive monitoring capabilities for tracking dynamic changes within scaffolds as the native cellular component is removed during decellularization and model human cells are introduced into the scaffold during recellularization and proliferate in maintenance culture. We found that hydrodynamic pressure drop (ΔP) across the retained scaffold vasculature is a noninvasive measurement of scaffold integrity. We further show that ΔP, and thus resistance to fluid flow through the scaffold, decreases with cell loss during decellularization and correspondingly increases to near normal values for whole organs following recellularization of the kidney or liver scaffolds. Perfused media may be further sampled in real time to measure soluble biomarkers (e.g., resazurin, albumin, or kidney injury molecule-1) that indicate degree of cellular metabolic activity, synthetic function, or engraftment into the scaffold. Cell growth within bioreactors is validated for primary and immortalized cells, and the design of each bioreactor is scalable to accommodate any three-dimensional scaffold (e.g., synthetic or naturally derived matrix) that contains conduits for nutrient perfusion to deliver media to growing cells and monitor noninvasive parameters during scaffold repopulation, broadening the applicability of these bioreactor systems.
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Affiliation(s)
- Joseph S Uzarski
- 1 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois
- 2 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois
| | - Brent M Bijonowski
- 1 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois
- 2 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois
| | - Bo Wang
- 1 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois
- 2 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois
| | - Heather H Ward
- 3 Department of Internal Medicine, University of New Mexico HSC , Albuquerque, New Mexico
| | | | - William M Miller
- 5 Department of Chemical and Biological Engineering, Northwestern University , Evanston, Illinois
- 6 Chemistry of Life Processes Institute, Northwestern University , Evanston, Illinois
| | - Jason A Wertheim
- 1 Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine , Chicago, Illinois
- 2 Department of Surgery, Northwestern University Feinberg School of Medicine , Chicago, Illinois
- 6 Chemistry of Life Processes Institute, Northwestern University , Evanston, Illinois
- 7 Department of Surgery, Jesse Brown VA Medical Center , Chicago, Illinois
- 8 Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University , Chicago, Illinois
- 9 Department of Biomedical Engineering, Northwestern University , Evanston, Illinois
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Laronda MM, Jakus AE, Whelan KA, Wertheim JA, Shah RN, Woodruff TK. Initiation of puberty in mice following decellularized ovary transplant. Biomaterials 2015; 50:20-9. [PMID: 25736492 PMCID: PMC4350019 DOI: 10.1016/j.biomaterials.2015.01.051] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [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: 10/30/2014] [Revised: 01/08/2015] [Accepted: 01/20/2015] [Indexed: 01/30/2023]
Abstract
Clinical interventions to preserve fertility and restore hormone levels in female patients with therapy-induced ovarian failure are insufficient, particularly for pediatric cancer patients. Laparoscopic isolation of cortical ovarian tissue followed by cryopreservation with subsequent autotransplantation has temporarily restored fertility in at least 27 women who survived cancer, and aided in pubertal transition for one pediatric patient. However, reintroducing cancer cells through ovarian transplantation has been a major concern. Decellularization is a process of removing cellular material, while maintaining the organ skeleton of extracellular matrices (ECM). The ECM that remains could be stripped of cancer cells and reseeded with healthy ovarian cells. We tested whether a decellularized ovarian scaffold could be created, recellularized and transplanted to initiate puberty in mice. Bovine and human ovaries were decellularized, and the ovarian skeleton microstructures were characterized. Primary ovarian cells seeded onto decellularized scaffolds produced estradiol in vitro. Moreover, the recellularized grafts initiated puberty in mice that had been ovariectomized, providing data that could be used to drive future human transplants and have broader implications on the bioengineering of other organs with endocrine function.
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Affiliation(s)
- Monica M Laronda
- Division of Reproductive Biology, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Adam E Jakus
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Kelly A Whelan
- Division of Reproductive Biology, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jason A Wertheim
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
| | - Ramille N Shah
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, USA; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Teresa K Woodruff
- Division of Reproductive Biology, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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Jiang B, Akgun B, Lam RC, Ameer GA, Wertheim JA. A polymer-extracellular matrix composite with improved thromboresistance and recellularization properties. Acta Biomater 2015; 18:50-8. [PMID: 25712388 DOI: 10.1016/j.actbio.2015.02.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [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: 10/29/2014] [Revised: 01/30/2015] [Accepted: 02/13/2015] [Indexed: 01/21/2023]
Abstract
Organ engineering using decellularized scaffolds is a potential long-term solution to donor organ shortage. However, this technology is severely limited by small vessel thrombosis due to incompletely recellularized vessels, resulting in exposure of extracellular matrix (ECM) components to platelets and clotting factors in flowing blood. To address this limitation, we designed a polymer-ECM composite and demonstrated its potential to reduce thrombosis and facilitate re-endothelialization in a vascular graft model. Rat aortas were decellularized using a sequential combination of weak detergents followed by a nuclease treatment that resulted in 96.5±1.3% DNA removal, while ECM components and mechanical properties were well maintained. A biodegradable and biocompatible elastomer poly(1,8 octanediol citrate) (POC, 1wt.%) was infused throughout the ECM at mild conditions (37°C and 45°C) and was functionalized with heparin using carbodiimide chemistry. The polymer-ECM composite significantly reduced platelet adhesion (67.4±8.2% and 82.7±9.6% reduction relative to untreated ECM using one of two processing temperatures, 37°C or 45°C, respectively); inhibited whole blood clotting (85.9±4.3% and 87.0±11.9% reduction relative to untreated ECM at 37°C or 45°C processing temperature, respectively); and supported endothelial cell-and to a lesser extent smooth muscle cell-adhesion in vitro. Taken together, this novel POC composite may provide a solution for thrombosis of small vessel conduits commonly seen in decellularized scaffolds used in tissue engineering applications.
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Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Berke Akgun
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Ryan C Lam
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States; Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Guillermo A Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60201, United States; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, IL 60611, United States.
| | - Jason A Wertheim
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, United States; Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60201, United States; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, IL 60611, United States; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL 60612, United States.
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Wertheim JA, Leventhal JR. Clinical implications of basic science discoveries: induced pluripotent stem cell therapy in transplantation--a potential role for immunologic tolerance. Am J Transplant 2015; 15:887-90. [PMID: 25691150 PMCID: PMC4532334 DOI: 10.1111/ajt.13155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 09/19/2014] [Revised: 11/28/2014] [Accepted: 11/29/2014] [Indexed: 01/25/2023]
Abstract
Induced pluripotent stem cells (iPSCs) hold the potential for future development of genetically identical tissues from almost any mature cell lineage. For clinical applications in cell therapy and transplantation, it may provide a means to one-day restore dysfunctional or damaged tissue without the need for immunosuppression. A recent study by de Almeida et al published in the journal Nature Communications indicates that iPSCs may indeed elicit an immune response that evolves as cells differentiate toward maturity to induce a state of tolerance within a recipient animal. If these early findings hold true, it suggests a possible explanation for self-recognition of mature cells derived from iPSCs for use in future therapeutic interventions in transplantation such as cellular therapy or tissue engineering.
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Affiliation(s)
- Jason A. Wertheim
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60201,Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, 60612,Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, IL, 60611,Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60201,Address for correspondence: Jason A. Wertheim, M.D., Ph.D. ; Joseph R. Leventhal, M.D., Ph.D.
| | - Joseph R. Leventhal
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611,Address for correspondence: Jason A. Wertheim, M.D., Ph.D. ; Joseph R. Leventhal, M.D., Ph.D.
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Caralt M, Uzarski JS, Iacob S, Obergfell KP, Berg N, Bijonowski BM, Kiefer KM, Ward HH, Wandinger-Ness A, Miller WM, Zhang ZJ, Abecassis MM, Wertheim JA. Optimization and critical evaluation of decellularization strategies to develop renal extracellular matrix scaffolds as biological templates for organ engineering and transplantation. Am J Transplant 2015; 15:64-75. [PMID: 25403742 PMCID: PMC4276475 DOI: 10.1111/ajt.12999] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [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: 04/21/2014] [Revised: 08/14/2014] [Accepted: 08/30/2014] [Indexed: 01/25/2023]
Abstract
The ability to generate patient-specific cells through induced pluripotent stem cell (iPSC) technology has encouraged development of three-dimensional extracellular matrix (ECM) scaffolds as bioactive substrates for cell differentiation with the long-range goal of bioengineering organs for transplantation. Perfusion decellularization uses the vasculature to remove resident cells, leaving an intact ECM template wherein new cells grow; however, a rigorous evaluative framework assessing ECM structural and biochemical quality is lacking. To address this, we developed histologic scoring systems to quantify fundamental characteristics of decellularized rodent kidneys: ECM structure (tubules, vessels, glomeruli) and cell removal. We also assessed growth factor retention--indicating matrix biofunctionality. These scoring systems evaluated three strategies developed to decellularize kidneys (1% Triton X-100, 1% Triton X-100/0.1% sodium dodecyl sulfate (SDS) and 0.02% Trypsin-0.05% EGTA/1% Triton X-100). Triton and Triton/SDS preserved renal microarchitecture and retained matrix-bound basic fibroblast growth factor and vascular endothelial growth factor. Trypsin caused structural deterioration and growth factor loss. Triton/SDS-decellularized scaffolds maintained 3 h of leak-free blood flow in a rodent transplantation model and supported repopulation with human iPSC-derived endothelial cells and tubular epithelial cells ex vivo. Taken together, we identify an optimal Triton/SDS-based decellularization strategy that produces a biomatrix that may ultimately serve as a rodent model for kidney bioengineering.
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Affiliation(s)
- Mireia Caralt
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611,Servei Cirurgia HepatoBilioPancreatica i Trasplantaments. Hospital Universitari Vall Hebron. Universitat Autonoma de Barcelona. Spain
| | - Joseph S. Uzarski
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Stanca Iacob
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Kyle P. Obergfell
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611
| | - Natasha Berg
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Brent M. Bijonowski
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Kathryn M. Kiefer
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611
| | - Heather H. Ward
- Department of Internal Medicine, University of New Mexico, Albuquerque, NM, 87131
| | | | - William M. Miller
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60201,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60201
| | - Zheng J. Zhang
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Michael M. Abecassis
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611
| | - Jason A. Wertheim
- Comprehensive Transplant Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611,Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60201,Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, 60612,Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, IL, 60611,Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60201,Address for correspondence: Jason A. Wertheim, M.D., Ph.D., 676 St. Clair St. Suite 1900, Chicago, Illinois 60611, Telephone: (312) 695-0257, Fax: (312) 503-3366,
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Soto-Gutierrez A, Wertheim JA. The regeneration of organogenesis. Organogenesis 2013; 9:1-2. [PMID: 23594929 DOI: 10.4161/org.24545] [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: 11/19/2022] Open
Abstract
We would like to welcome our readers to the regenerated Organogenesis and to share with you the reasoning behind the refocusing of this journal toward the development of tissues and organs as a future means to improve the health of patients.
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Yersiz H, Lee C, Kaldas FM, Hong JC, Rana A, Schnickel GT, Wertheim JA, Zarrinpar A, Agopian VG, Gornbein J, Naini BV, Lassman CR, Busuttil RW, Petrowsky H. Assessment of hepatic steatosis by transplant surgeon and expert pathologist: a prospective, double-blind evaluation of 201 donor livers. Liver Transpl 2013; 19:437-49. [PMID: 23408461 DOI: 10.1002/lt.23615] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 12/23/2012] [Indexed: 12/15/2022]
Abstract
An accurate clinical assessment of hepatic steatosis before transplantation is critical for successful outcomes after liver transplantation, especially if a pathologist is not available at the time of procurement. This prospective study investigated the surgeon's accuracy in predicting hepatic steatosis and organ quality in 201 adult donor livers. A steatosis assessment by a blinded expert pathologist served as the reference gold standard. The surgeon's steatosis estimate correlated more strongly with large-droplet macrovesicular steatosis [ld-MaS; nonparametric Spearman correlation coefficient (rS ) = 0.504] versus small-droplet macrovesicular steatosis (sd-MaS; rS = 0.398). True microvesicular steatosis was present in only 2 donors (1%). Liver texture criteria (yellowness, absence of scratch marks, and round edges) were mainly associated with ld-MaS (variance = 0.619) and were less associated with sd-MaS (variance = 0.264). The prediction of ≥30% ld-MaS versus <30% ld-MaS was excellent when liver texture criteria were used (accuracy = 86.2%), but it was less accurate when the surgeon's direct estimation of the steatosis percentage was used (accuracy = 75.5%). The surgeon's quality grading correlated with the degree of ld-MaS and the surgeon's steatosis estimate as well as the incidence of poor initial function and primary nonfunction. In conclusion, the precise estimation of steatosis remains challenging even in experienced hands. Liver texture characteristics are more helpful in identifying macrosteatotic organs than the surgeon's actual perception of steatosis. These findings are especially important when histological assessment is not available at the donor's hospital.
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Affiliation(s)
- Hasan Yersiz
- Department of Surgery, Dumont-UCLA Transplant Center, Ronald Reagan-UCLA Medical Center, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095-7054, USA
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Abstract
Bioartificial or laboratory-grown organs is a growing field centered on developing replacement organs and tissues to restore body function and providing a potential solution to the shortage of donor organs for transplantation. With the entry of engineered planar tissues, such as bladder and trachea, into clinical studies, an increasing focus is being given to designing complex, three-dimensional solid organs. As tissues become larger, thicker and more complex, the vascular network becomes crucial for supplying nutrients and maintaining viability and growth of the neo-organ. Perfusion decellularization, the process of removing cells from an entire organ, leaves the matrix of the vascular network intact. Organ engineering requires a delicate process of decellularization, sterilization, reseeding with appropriate cells, and organ maturation and stimulation to ensure optimal development. The design of bioreactors to facilitate this sequence of events has been refined to the extent that some bioartificial organs grown in these systems have been transplanted into recipient animals with sustained, though limited, function. This review focuses on the state-of-art in bioreactor development for perfusion-based bioartificial organs and highlights specific design components in need of further refinement.
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Affiliation(s)
- Brent M Bijonowski
- Master of Biotechnology Program, McCormick School of Engineering, Northwestern University, Evanston, IL ; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
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Soto-Gutierrez A, Wertheim JA, Ott HC, Gilbert TW. Perspectives on whole-organ assembly: moving toward transplantation on demand. J Clin Invest 2012; 122:3817-23. [PMID: 23114604 DOI: 10.1172/jci61974] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
There is an ever-growing demand for transplantable organs to replace acute and chronically damaged tissues. This demand cannot be met by the currently available donor organs. Efforts to provide an alternative source have led to the development of organ engineering, a discipline that combines cell biology, tissue engineering, and cell/organ transplantation. Over the last several years, engineered organs have been implanted into rodent recipients and have shown modest function. In this article, we summarize the most recent advances in this field and provide a perspective on the challenges of translating this promising new technology into a proven regenerative therapy.
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Affiliation(s)
- Alejandro Soto-Gutierrez
- Department of Pathology, Transplantation Section of Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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Abstract
Liver transplantation is the gold standard of care in patients with end-stage liver disease and those with tumors of hepatic origin in the setting of liver dysfunction. From 1988 to 2009, liver transplantation in the United States grew 3.7-fold from 1713 to 6320 transplants annually. The expansion of liver transplantation is chiefly driven by scientific breakthroughs that have extended patient and graft survival well beyond those expected 50 years ago. The success of liver transplantation is now its primary obstacle, as the pool of donor livers fails to keep pace with the growing number of patients added to the national liver transplant waiting list. This review focuses on three major challenges facing liver transplantation in the United States and discusses new areas of investigation that address each issue: (1) the need for an expanded number of useable donor organs, (2) the need for improved therapies to treat recurrent hepatitis C after transplantation and (3) the need for improved detection, risk stratification based upon tumor biology and molecular inhibitors to combat hepatocellular carcinoma.
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Affiliation(s)
- Jason A. Wertheim
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Los Angeles, CA,Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Henrik Petrowsky
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Los Angeles, CA,Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Sammy Saab
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Los Angeles, CA,Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA,Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Jerzy W. Kupiec-Weglinski
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Los Angeles, CA,Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Ronald W. Busuttil
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Los Angeles, CA,Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
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Saidi RF, Wertheim JA, Ko DSC, Elias N, Martin H, Delmonico FL, Cosimi AB, Kawai T. Impact of donor kidney recovery method on lymphatic complications in kidney transplantation. Transplant Proc 2008; 40:1054-5. [PMID: 18555113 DOI: 10.1016/j.transproceed.2008.04.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Prolonged lymphatic drainage and lymphocele are undesirable complications following kidney transplantation. We evaluated the impact of kidney recovery methods (deceased donor vs laparoscopic nephrectomy) on the lymphatic complications of the kidney transplant recipients. METHOD The incidence of lymphatic complications was retrospectively analyzed in recipients of deceased donor kidneys (DD, n = 62) versus laparoscopically procured kidneys from living donors (LP, n = 61). A drain was placed in the retroperitoneal space in all recipients. The drain was maintained until the output became less than 30 mL/d with no evidence of fluid collection by ultrasound examination. RESULTS There was no statistically significant difference in the patient demographics (age, gender, and original disease and procedure time) between two groups. The incidence of lymphocele that required therapeutic intervention was comparable in both groups (3.2%). However, the duration of drain placement was significantly longer in the LP group than in the DD group, 8.6 +/- 2.5 days versus 5.4 +/- 2.5 day, respectively (P < .05). CONCLUSION The recipients of laparoscopically removed kidneys had a higher incidence of prolonged lymphatic leakage. More meticulous back table preparation may be required in LP kidneys to prevent prolonged lymphatic drainage after kidney transplantation. These observations may indicate that the major source of persistent lymphatic leakage is lymphatics of the allograft rather than severed recipient lymphatics.
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Affiliation(s)
- R F Saidi
- Transplant Center, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts 02214, USA
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Wertheim JA, Perera SA, Hammer DA, Ren R, Boettiger D, Pear WS. Localization of BCR-ABL to F-actin regulates cell adhesion but does not attenuate CML development. Blood 2003; 102:2220-8. [PMID: 12791659 DOI: 10.1182/blood-2003-01-0062] [Citation(s) in RCA: 42] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We have previously found that P210BCR-ABL increases the adhesion of hematopoietic cell lines to fibronectin by a mechanism that is independent of tyrosine kinase activity. To investigate the pathway(s) by which P210BCR-ABL influences cell adhesion, we used a quantitative cell adhesion device that can discern small changes in cell adhesion to assay P210BCR-ABL with mutations in several critical domains. We expressed P210BCR-ABL mutants in 32D myeloblast cells and found that binding to fibronectin is mediated primarily by the alpha5beta1 integrin. We performed a structure/function analysis to map domains important for cell adhesion. Increased adhesion was mediated by 3 domains: (1) the N-terminal coiled-coil domain that facilitates oligomerization and F-actin localization; (2) bcr sequences between aa 163 to 210; and (3) F-actin localization through the C-terminal actin-binding domain of c-abl. We compared our adhesion results with the ability of these mutants to cause a chronic myelogenous leukemia (CML)-like disease in a murine bone marrow transplantation assay and found that adhesion to fibronectin did not correlate with the ability of these mutants to cause CML. Together, our results suggest that F-actin localization may play a pivotal role in modulating adhesion but that it is dispensable for the development of CML.
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MESH Headings
- Actins/metabolism
- Animals
- Bone Marrow Cells/metabolism
- Bone Marrow Cells/pathology
- Bone Marrow Transplantation
- Cell Adhesion/physiology
- Fibronectins/metabolism
- Fusion Proteins, bcr-abl/chemistry
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Integrin alpha4beta1/metabolism
- Integrin alpha5beta1/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/physiopathology
- Mice
- Mice, Inbred C57BL
- Protein Binding/physiology
- Protein Structure, Tertiary
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Affiliation(s)
- Jason A Wertheim
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, 611 BRB II/III, 421 Curie Blvd, Philadelphia, PA 19104-6160
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Abstract
Chronic myelogenous leukemia (CML) is a biphasic neoplasm of the bone marrow that is precipitated by the Philadelphia chromosome, a t(9;22) balanced translocation that encodes a constitutively activated nonreceptor tyrosine kinase termed P210(BCR-ABL). This oncoprotein has several intracellular functions; however, the most important effect of P210(BCR-ABL) leading to cell transformation is phosphorylation of signaling molecules through a constitutively active tyrosine kinase domain. Despite extensive knowledge of the structure and functional domains of BCR-ABL, its precise function in transformation is not known. Progress has been hampered, in part, by the lack of relevant CML models, as cell culture and in vitro assays do not mimic the pathogenesis of CML. Recently, there has been significant progress toward improving murine models that closely resemble human CML. This has allowed researchers to evaluate critical functions of BCR-ABL and has provided a model to test the efficacy of therapeutic medications that block these pathways. Our laboratory has developed two intersecting research programs to better understand the functioning of P210(BCR-ABL) in leukemogenesis. In one approach, we have developed a murine CML model by transferring HSCs that express BCR-ABL from a retroviral vector. All recipients develop a rapidly fatal MPD that shares several important features with CML. This model has been extremely useful for studying the function of BCR-ABL in the pathogenesis of CML. A second approach utilizes a quantitative cell detachment apparatus capable of measuring small changes in cell adhesion to investigate the mechanism by which P210(BCR-ABL) causes abnormal cell binding. Altered cell adhesion may contribute to the imbalance between proliferation and self-renewal in the hematopoietic progenitor compartment. To better understand the role abnormal adhesion may play in the development of leukemia, we have attempted to correlate the effects of functional P210(BCR-ABL) mutants in regulating adhesion and oncogenicity.
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Affiliation(s)
- Jason A Wertheim
- Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6160, USA
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Abstract
The t(9;22) chromosomal translocation results in expression of P210(BCR-ABL), a fusion protein necessary for the development of chronic myelogenous leukemia (CML). The constitutive activation of the P210(BCR-ABL) tyrosine kinase results in phosphorylation of multiple signaling pathways leading to the transformed phenotype. Additionally, extracellular interactions between P210(BCR-ABL)-expressing progenitor cells and bone marrow stroma may provide external signals that facilitate CML development. In contrast to the intracellular signaling pathways involved in CML, little is known about how P210(BCR-ABL) expression modifies cell-cell and cell-substratum interactions. To investigate the role of P210(BCR-ABL) in modulating cellular adhesion, we used a highly sensitive and quantitative cell detachment apparatus that measures the strength of association between a population of cells and an adhesive matrix. Our findings show that P210(BCR-ABL) expression increased adhesion nearly 2-fold between the myeloblastic cell line, 32D, and fibronectin compared to a control vector. We then investigated whether abnormal adhesion due to P210(BCR-ABL) expression was caused by its tyrosine kinase activity. A quantitative analysis of cell-fibronectin adhesion found that neither expression of a kinase-inactive P210(BCR-ABL) mutant in 32D cells or attenuation of kinase activity by STI571 (imatinib mesylate) in 32D cells transduced with wild-type P210(BCR-ABL) could correct the nearly 2-fold increase in cell-fibronectin adhesion. Similarly, STI571 treatment of Meg-01 cells, a P210(BCR-ABL)-expressing cell line derived from a patient in blast crisis, failed to inhibit adhesion to fibronectin. Together, our results indicate that changes in adhesion induced by P210(BCR-ABL) are independent of its tyrosine kinase activity.
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Affiliation(s)
- Jason A Wertheim
- Department of Bioengineering, Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia 19104-6160, USA
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Janowska-Wieczorek A, Majka M, Marquez-Curtis L, Wertheim JA, Turner AR, Ratajczak MZ. Bcr-abl-positive cells secrete angiogenic factors including matrix metalloproteinases and stimulate angiogenesis in vivo in Matrigel implants. Leukemia 2002; 16:1160-6. [PMID: 12040448 DOI: 10.1038/sj.leu.2402486] [Citation(s) in RCA: 66] [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: 09/03/2001] [Accepted: 01/23/2002] [Indexed: 12/16/2022]
Abstract
To further elucidate the role of angiogenesis in the pathogenesis of chronic myelogenous leukemia (CML) we evaluated the effects of the bcr-abl translocation on the secretion of the angiogenic factors VEGF, FGF-2, HGF, IL-8 and matrix metalloproteinases (MMPs) as well as on the angiogenic potential in vivo of bcr-abl+ cells. First, we examined murine FL5.12 cells transfected with the bcr-abl constructs p185, p210 and p230 and found that the transfected cells secreted as much as four-fold more VEGF (p185 > p210 >p230) than wild-type (wt) cells, as well as MMP-9 and MMP-2. When Matrigel fragments containing these bcr-abl+ cells were implanted subcutaneously in SCID or Balb-C mice they became significantly more vascularized and hemoglobinized than implants containing normal or wt cells (p185 > p210 > p230). Similarly, we found that myeloblasts expanded from bone marrow (BM) CD34+ cells derived from Philadelphia-positive CML patients secreted up to 10 times more VEGF, FGF-2, HGF and IL-8 compared to myeloblasts derived from normal donors' BM CD34+ cells and that BM mononuclear cells (MNC) isolated from CML patients induced vascularization of Matrigel implants in mice. Moreover, we found that peripheral blood MNC expressed MMP-2 and membrane-type (MT)1-MMP in about 50% of CML patients studied, and MMP-9 in all of them. Furthermore, VEGF stimulated the secretion of MMP-9 in these primary CML cells. We conclude that stimulation of angiogenesis by angiogenic factors, including MMPs, could play an important role in the pathogenesis of CML, suggesting that therapies targeting the newly formed endothelium could be developed for CML.
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MESH Headings
- Adult
- Aged
- Angiogenesis Inducing Agents/biosynthesis
- Angiogenesis Inducing Agents/metabolism
- Animals
- Cell Line, Transformed
- Cells, Cultured
- Collagen/administration & dosage
- Drug Combinations
- Endothelial Growth Factors/metabolism
- Female
- Fusion Proteins, bcr-abl/analysis
- Fusion Proteins, bcr-abl/genetics
- Humans
- Laminin/administration & dosage
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/enzymology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Lymphokines/metabolism
- Male
- Matrix Metalloproteinases/biosynthesis
- Matrix Metalloproteinases/genetics
- Matrix Metalloproteinases/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, SCID
- Middle Aged
- Neovascularization, Pathologic
- Proteoglycans/administration & dosage
- RNA, Neoplasm/biosynthesis
- Tissue Inhibitor of Metalloproteinases/biosynthesis
- Tissue Inhibitor of Metalloproteinases/genetics
- Tissue Inhibitor of Metalloproteinases/metabolism
- Transfection
- Vascular Endothelial Growth Factor A
- Vascular Endothelial Growth Factors
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He Y, Wertheim JA, Xu L, Miller JP, Karnell FG, Choi JK, Ren R, Pear WS. The coiled-coil domain and Tyr177 of bcr are required to induce a murine chronic myelogenous leukemia-like disease by bcr/abl. Blood 2002; 99:2957-68. [PMID: 11929787 DOI: 10.1182/blood.v99.8.2957] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.3] [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] [Indexed: 11/20/2022] Open
Abstract
The bcr/abl fusion in chronic myelogenous leukemia (CML) creates a chimeric tyrosine kinase with dramatically different properties than intact c-abl. In P210 bcr/abl, the bcr portion includes a coiled-coil oligomerization domain (amino acids 1-63) and a grb2-binding site at tyrosine 177 (Tyr177) that are critical for fibroblast transformation, but give variable results in other cell lines. To investigate the role of the coiled-coil domain and Tyr177 in promoting CML, 4 P210 bcr/abl-derived mutants containing different bcr domains fused to abl were constructed. All 4 mutants, Delta(1-63) bcr/abl, (1-63) bcr/abl, Tyr177Phe bcr/abl, and (1-210) bcr/abl exhibited elevated tyrosine kinase activity and conferred factor-independent growth in cell lines. In contrast, differences in the transforming potential of the 4 mutants occurred in our mouse model, in which all mice receiving P210 bcr/abl-expressing bone marrow cells exclusively develop a myeloproliferative disease (MPD) resembling human CML. Of the 4 mutants assayed, only 1-210 bcr/abl, containing both the coiled-coil domain and Tyr177, induced MPD. Unlike full-length P210, this mutant also caused a simultaneous B-cell acute lymphocytic leukemia (ALL). The other 3 mutants, (1-63) bcr/abl, Tyr177Phe bcr/abl, and Delta(1-63) bcr/abl, failed to induce an MPD but instead caused T-cell ALL. These results show that both the bcr coiled-coil domain and Tyr177 are required for MPD induction by bcr/abl and provide the basis for investigating downstream signaling pathways that lead to CML.
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MESH Headings
- Animals
- Base Sequence
- Binding Sites/genetics
- Bone Marrow Cells/metabolism
- Bone Marrow Transplantation
- Cell Transformation, Neoplastic/genetics
- Fusion Proteins, bcr-abl/administration & dosage
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/pharmacology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/etiology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Mice
- Models, Animal
- Mutation
- Neoplasms, Experimental/etiology
- Neoplasms, Experimental/genetics
- Oncogene Proteins/genetics
- Oncogene Proteins/pharmacology
- Peptide Fragments/administration & dosage
- Peptide Fragments/pharmacology
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/etiology
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Protein Structure, Tertiary
- Protein-Tyrosine Kinases/metabolism
- Proto-Oncogene Proteins
- Proto-Oncogene Proteins c-bcr
- Survival Analysis
- Transduction, Genetic
- Tumor Cells, Cultured
- Tyrosine
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Affiliation(s)
- Yiping He
- Department of Pathology and Laboratory Medicine, Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, USA
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