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Strassner H, Caulk A, Reher N, Petrescu S, Vasanji A. Evaluating Performance of Circular Staplers Using Comparative Test Methods for Evidence-Based Surgery. Surg Innov 2023; 30:576-585. [PMID: 37029908 DOI: 10.1177/15533506231166447] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
BACKGROUND Circular stapler anastomosis is a common surgical procedure. Despite technological advancements, anastomotic leak remains a postoperative concern. Assessment of new technologies is impeded by variations in test methods and analysis, precluding outcome reproducibility and direct comparisons of results across studies. The development of robust and reproducible preclinical test methods is critical to accelerating stapling technology advancements. METHODOLOGY Leak pressure, staple line perfusion and security, and device removal force were quantified for triple-row (Tri-staple EEA, TriEEA) and double-row staplers (Echelon Circular Powered, ECP). Leak and perfusion testing were performed in vivo. Device removal force and staple line security testing were performed with synthetic medium using an Instron. Data were analyzed using unpaired student's t-test or Kruskal-Wallis test, with statistical significance defined as P < .05. RESULTS Leak pressure was 73% higher in TriEEA vs ECP (P = .016). TriEEA staple line failure force was lower than ECP at 40 and 50 mmHg (P = .001 and P = .023, respectively). Perfusion to the staple line was higher (148%) for TriEEA than for ECP (P = .003) and the force required to remove the device from its stapled anastomosis was 78% lower for TriEEA than for ECP (P < .001). DISCUSSION/CONCLUSIONS This report addresses a primary limitation in stapling research by presenting novel methodologies which enhance clinical relevance and provide sufficient detail for reproduction by independent investigators. These methods are applied to a comparison between triple-row and double-row staplers to demonstrate utility of new test methods in assessing key technology design features.
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Affiliation(s)
| | | | - Nicholas Reher
- Surgical Innovations, Medtronic plc, North Haven, CT, USA
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2
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Sevgi DD, Srivastava SK, Wykoff C, Scott AW, Hach J, O'Connell M, Whitney J, Vasanji A, Reese JL, Ehlers JP. Deep learning-enabled ultra-widefield retinal vessel segmentation with an automated quality-optimized angiographic phase selection tool. Eye (Lond) 2022; 36:1783-1788. [PMID: 34373610 PMCID: PMC9391395 DOI: 10.1038/s41433-021-01661-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 05/22/2021] [Accepted: 06/21/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES To demonstrate the feasibility of a deep learning-based vascular segmentation tool for UWFA and evaluate its ability to automatically identify quality-optimized phase-specific images. METHODS Cumulative retinal vessel areas (RVA) were extracted from all available UWFA frames. Cubic splines were fitted for serial vascular assessment throughout the angiographic phases of eyes with diabetic retinopathy (DR), sickle cell retinopathy (SCR), or normal retinal vasculature. The image with maximum RVA was selected as the optimum early phase. A late phase frame was selected at a minimum of 4 min that most closely mirrored the RVA from the selected early image. Trained image analysts evaluated the selected pairs. RESULTS A total of 13,980 UWFA sequences from 462 sessions were used to evaluate the performance and 1578 UWFA sequences from 66 sessions were used to create cubic splines. Maximum RVA was detected at a mean of 41 ± 15, 47 ± 27, 38 ± 8 s for DR, SCR, and normals respectively. In 85.2% of the sessions, appropriate images for both phases were successfully identified. The individual success rate was 90.7% for early and 94.6% for late frames. CONCLUSIONS Retinal vascular characteristics are highly phased and field-of-view sensitive. Vascular parameters extracted by deep learning algorithms can be used for quality assessment of angiographic images and quality optimized phase selection. Clinical applications of a deep learning-based vascular segmentation and phase selection system might significantly improve the speed, consistency, and objectivity of UWFA evaluation.
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Affiliation(s)
- Duriye Damla Sevgi
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sunil K Srivastava
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Charles Wykoff
- Retina Consultants of America, Houston, Texas; Blanton Eye Institute, Houston Methodist Hospital & Weill Cornell Medical College, Houston, TX, USA
| | - Adrienne W Scott
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jenna Hach
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Margaret O'Connell
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jon Whitney
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Jamie L Reese
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Justis P Ehlers
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.
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3
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Gajeton J, Krukovets I, Yendamuri R, Verbovetskiy D, Vasanji A, Sul L, Stenina‐Adognravi O. miR-467 regulates inflammation and blood insulin and glucose. J Cell Mol Med 2021; 25:2549-2562. [PMID: 33566451 PMCID: PMC7933977 DOI: 10.1111/jcmm.16224] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 09/24/2020] [Accepted: 10/18/2020] [Indexed: 12/12/2022] Open
Abstract
Obesity is associated with inflammation and insulin resistance (IR), but the regulation of insulin sensitivity (IS) and connections between IS and inflammation remain unclear. We investigated the role of miR-467a-5p, a miRNA induced by hyperglycaemia, in regulating inflammation and blood glucose handling. We previously demonstrated that miR-467a-5p is induced by hyperglycaemia and inhibits the production of thrombospondin-1 (TSP-1), a protein implicated in regulating inflammation. To investigate the role of miR-467 in blood glucose handling and tissue inflammation, WT C57BL/6 mice were fed chow or Western diet from 5 to 32 weeks of age and injected weekly with miR-467a-5p antagonist. Inhibiting miR-467a-5p resulted in 47% increase in macrophage infiltration and increased Il6 levels in adipose tissue, higher plasma insulin levels (98 ng/mL vs 63 ng/mL), and 17% decrease in glucose clearance without increase in weight or HDL/LDL. The antagonist effect was lost in mice on Western diet. Mice lacking TSP-1 lost some but not all of the miR-467 effects, suggesting Thbs1 (and other unknown transcripts) are targeted by miR-467 to regulate inflammation. miR-467a-5p provides a physiological feedback when blood glucose is elevated to avoid inflammation and increased blood glucose and insulin levels, which may prevent IR.
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Affiliation(s)
- Jasmine Gajeton
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
- Department of Molecular MedicineCase Western Reserve UniversityClevelandOHUSA
| | - Irene Krukovets
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
| | - Revanth Yendamuri
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
- Present address:
Northeast Ohio Medical UniversityRootstownOHUSA
| | - Dmitriy Verbovetskiy
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
| | | | - Lidiya Sul
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
- Present address:
Ohio University Heritage College of Osteopathic MedicineAthensOHUSA
| | - Olga Stenina‐Adognravi
- Department of Cardiovascular and Metabolic SciencesCleveland ClinicClevelandOHUSA
- Department of Molecular MedicineCase Western Reserve UniversityClevelandOHUSA
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Li HH, Abraham JR, Sevgi DD, Srivastava SK, Hach JM, Whitney J, Vasanji A, Reese JL, Ehlers JP. Automated Quality Assessment and Image Selection of Ultra-Widefield Fluorescein Angiography Images through Deep Learning. Transl Vis Sci Technol 2020; 9:52. [PMID: 32995069 PMCID: PMC7500112 DOI: 10.1167/tvst.9.2.52] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/16/2020] [Accepted: 07/21/2020] [Indexed: 11/24/2022] Open
Abstract
Purpose Numerous angiographic images with high variability in quality are obtained during each ultra-widefield fluorescein angiography (UWFA) acquisition session. This study evaluated the feasibility of an automated system for image quality classification and selection using deep learning. Methods The training set was comprised of 3543 UWFA images. Ground-truth image quality was assessed by expert image review and classified into one of four categories (ungradable, poor, good, or best) based on contrast, field of view, media opacity, and obscuration from external features. Two test sets, including randomly selected 392 images separated from the training set and an independent balanced image set composed of 50 ungradable/poor and 50 good/best images, assessed the model performance and bias. Results In the randomly selected and balanced test sets, the automated quality assessment system showed overall accuracy of 89.0% and 94.0% for distinguishing between gradable and ungradable images, with sensitivity of 90.5% and 98.6% and specificity of 87.0% and 81.5%, respectively. The receiver operating characteristic curve measuring performance of two-class classification (ungradable and gradable) had an area under the curve of 0.920 in the randomly selected set and 0.980 in the balanced set. Conclusions A deep learning classification model demonstrates the feasibility of automatic classification of UWFA image quality. Clinical application of this system might greatly reduce manual image grading workload, allow quality-based image presentation to clinicians, and provide near-instantaneous feedback on image quality during image acquisition for photographers. Translational Relevance The UWFA image quality classification tool may significantly reduce manual grading for clinical- and research-related work, providing instantaneous and reliable feedback on image quality.
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Affiliation(s)
- Henry H Li
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.,School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Joseph R Abraham
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Duriye Damla Sevgi
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sunil K Srivastava
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.,Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jenna M Hach
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jon Whitney
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Jamie L Reese
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.,Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Justis P Ehlers
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.,Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
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Sundaraj K, Salmon LJ, Heath EL, Winalski CS, Colak C, Vasanji A, Roe JP, Pinczewski LA. Bioabsorbable Versus Titanium Screws in Anterior Cruciate Ligament Reconstruction Using Hamstring Autograft: A Prospective, Randomized Controlled Trial With 13-Year Follow-up. Am J Sports Med 2020; 48:1316-1326. [PMID: 32302205 DOI: 10.1177/0363546520911024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Bioabsorbable screws for anterior cruciate ligament reconstruction (ACLR) have been a popular choice, with theoretical advantages in imaging and surgery. Titanium and poly-L-lactic acid with hydroxyapatite (PLLA-HA) screws have been compared, but with less than a decade of follow-up. PURPOSE/HYPOTHESIS The purpose was to compare long-term outcomes of hamstring autograft ACLR using either PLLA-HA screws or titanium screws. We hypothesized there would be no difference at 13 years in clinical scores or tunnel widening between PLLA-HA and titanium screw types, along with high-grade resorption and ossification of PLLA-HA screws. STUDY DESIGN Randomized controlled trial; Level of evidence, 1. METHODS Forty patients undergoing ACLR were randomized to receive either a PLLA-HA screw or a titanium screw for ACL hamstring autograft fixation. Blinded evaluation was performed at 2, 5, and 13 years using the International Knee Documentation Committee score, Lysholm knee score, and KT-1000 arthrometer. Magnetic resonance imaging (MRI) was performed at 2 or 5 years and 13 years to evaluate tunnel volumes, ossification around the screw, graft integration, and cyst formation. Computed tomography (CT) of patients with PLLA-HA was performed at 13 years to evaluate tunnel volumes and intratunnel ossification. RESULTS No differences were seen in clinical outcomes at 2, 5, or 13 years between the 2 groups. At 13 years, tibial tunnel volumes were smaller for the PLLA-HA group (2.17 cm3) compared with the titanium group (3.33 cm3; P = .004). By 13 years, the PLLA-HA group had complete or nearly complete resorption on MRI or CT scan. CONCLUSION Equivalent clinical results were found between PLLA-HA and titanium groups at 2, 5, and 13 years. Although PLLA-HA screws had complete or nearly complete resorption by 13 years, tunnel volumes remained largely unchanged, with minimal ossification.
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Affiliation(s)
- Keran Sundaraj
- North Sydney Orthopaedic and Sports Medicine, Sydney, Australia
| | - Lucy J Salmon
- North Sydney Orthopaedic and Sports Medicine, Sydney, Australia
| | - Emma L Heath
- North Sydney Orthopaedic and Sports Medicine, Sydney, Australia
| | | | - Ceylan Colak
- Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | | | - Justin P Roe
- North Sydney Orthopaedic and Sports Medicine, Sydney, Australia
| | - Leo A Pinczewski
- North Sydney Orthopaedic and Sports Medicine, Sydney, Australia.,University of Notre Dame, Sydney, Australia
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6
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Allen BC, Florez E, Sirous R, Lirette ST, Griswold M, Remer EM, Wang ZJ, Bieszczad JE, Cox KL, Goenka AH, Howard-Claudio CM, Kang HC, Nandwana SB, Sanyal R, Shinagare AB, Henegan JC, Storrs J, Davenport MS, Ganeshan B, Vasanji A, Rini B, Smith AD. Comparative Effectiveness of Tumor Response Assessment Methods: Standard of Care Versus Computer-Assisted Response Evaluation. JCO Clin Cancer Inform 2019; 1:1-16. [PMID: 30657391 DOI: 10.1200/cci.17.00026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
PURPOSE To compare the effectiveness of metastatic tumor response evaluation with computed tomography using computer-assisted versus manual methods. MATERIALS AND METHODS In this institutional review board-approved, Health Insurance Portability and Accountability Act-compliant retrospective study, 11 readers from 10 different institutions independently categorized tumor response according to three different therapeutic response criteria by using paired baseline and initial post-therapy computed tomography studies from 20 randomly selected patients with metastatic renal cell carcinoma who were treated with sunitinib as part of a completed phase III multi-institutional study. Images were evaluated with a manual tumor response evaluation method (standard of care) and with computer-assisted response evaluation (CARE) that included stepwise guidance, interactive error identification and correction methods, automated tumor metric extraction, calculations, response categorization, and data and image archiving. A crossover design, patient randomization, and 2-week washout period were used to reduce recall bias. Comparative effectiveness metrics included error rate and mean patient evaluation time. RESULTS The standard-of-care method, on average, was associated with one or more errors in 30.5% (6.1 of 20) of patients, whereas CARE had a 0.0% (0.0 of 20) error rate ( P < .001). The most common errors were related to data transfer and arithmetic calculation. In patients with errors, the median number of error types was 1 (range, 1 to 3). Mean patient evaluation time with CARE was twice as fast as the standard-of-care method (6.4 minutes v 13.1 minutes; P < .001). CONCLUSION CARE reduced errors and time of evaluation, which indicated better overall effectiveness than manual tumor response evaluation methods that are the current standard of care.
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Affiliation(s)
- Brian C Allen
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Edward Florez
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Reza Sirous
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Seth T Lirette
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Michael Griswold
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Erick M Remer
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Zhen J Wang
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Jacob E Bieszczad
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Kelly L Cox
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Ajit H Goenka
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Candace M Howard-Claudio
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Hyunseon C Kang
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Sadhna B Nandwana
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Rupan Sanyal
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Atul B Shinagare
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - J Clark Henegan
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Judd Storrs
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Matthew S Davenport
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Balaji Ganeshan
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Amit Vasanji
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Brian Rini
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
| | - Andrew D Smith
- Brian C. Allen, Duke University Medical Center, Durham, NC; Edward Florez, Reza Sirous, Seth T. Lirette, Michael Griswold, Candace M. Howard-Claudio, J. Clark Henegan, Judd Storrs, and Andrew D. Smith, University of Mississippi Medical Center, Jackson, MS; Erick M. Remer and Brian Rini, The Cleveland Clinic; Amit Vasanji, ImageIQ, Cleveland; Jacob E. Bieszczad, University of Toledo Medical Center, Toledo, OH; Zhen J. Wang, University of California at San Francisco Medical Center, San Francisco, CA; Kelly L. Cox and Sadhna B. Nandwana, Emory University School of Medicine, Atlanta, GA; Ajit H. Goenka, The Mayo Clinic, Rochester, MN; Hyunseon C. Kang, University of Texas MD Anderson Cancer Center, Houston, TX; Rupan Sanyal, University of Alabama at Birmingham Medical Center, Birmingham, AL; Atul B. Shinagare, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard University, Boston, MA; Matthew S. Davenport, University of Michigan Health System, Ann Arbor, MI; and Balaji Ganeshan, University College of London, London, United Kingdom
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7
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Eschbach M, Sindberg GM, Godek ML, Nagelschmidt M, Paquette N, Wegener M, Alberino J, Mayotte J, Vasanji A, Miesse AM. Micro-CT imaging as a method for comparing perfusion in graduated-height and single-height surgical staple lines. MDER 2018; 11:267-273. [PMID: 30147383 PMCID: PMC6101738 DOI: 10.2147/mder.s171357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background Wound healing is a goal for advanced technology in the surgical space to benefit clinical outcomes. Surgical staplers are commonly used in a variety of open and minimally invasive abdominal and thoracic procedures. Assessment of wound healing traits, such as perfusion, has been challenging due to technical limitations. A novel technique that utilizes micro-computed tomography methodology to measure perfusion was designed to compare the micro-perfusion of staple lines between commercial stapler reloads that employ different staple height strategies. Materials and methods Following an Institutional Animal Care and Use Committee-approved protocol, rats were euthanized and immediately heparinized prior to a subtotal gastrectomy with either graduated-height or single-height staples. Rats were then perfused with barium, following which stomachs were removed and immediately fixed in formalin to prevent degradation. Stomachs were then imaged using micro-computed tomography and subsequent analysis was utilized to quantify fluid volume and patent vasculature proximity to staples within the staple line region for each group. Results Average perfusion volume was significantly higher with graduated-height staples (0.33% ± 0.18%) compared to single-height staples (0.16% ± 0.09%, P=0.011). Average vessel-to-staple line distance was not significant but trended lower with graduated-height staples (0.35±0.02 mm) compared to single-height staples (0.36±0.03 mm, P=0.18). Discussion Graduated-height staples had significantly higher perfusion volume than single-height staples, which likely has a downstream benefit on wound healing and clinical outcomes. Conclusion This study shows a higher perfusion volume around the staple lines using graduated-height staples as compared to single-height staples and this may contribute to better wound healing in patients.
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Affiliation(s)
- Matthew Eschbach
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
| | | | - Marisha L Godek
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
| | | | | | - Michael Wegener
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
| | - James Alberino
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
| | - Jane Mayotte
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
| | | | - Andrew M Miesse
- Minimally Invasive Therapies Group, Medtronic, North Haven, CT, USA,
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8
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Burgett ME, Lathia JD, Roth P, Nowacki AS, Galileo DS, Pugacheva E, Huang P, Vasanji A, Li M, Byzova T, Mikkelsen T, Bao S, Rich JN, Weller M, Gladson CL. Direct contact with perivascular tumor cells enhances integrin αvβ3 signaling and migration of endothelial cells. Oncotarget 2018; 7:43852-43867. [PMID: 27270311 PMCID: PMC5190064 DOI: 10.18632/oncotarget.9700] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 09/24/2015] [Accepted: 05/13/2016] [Indexed: 12/15/2022] Open
Abstract
The secretion of soluble pro-angiogenic factors by tumor cells and stromal cells in the perivascular niche promotes the aggressive angiogenesis that is typical of glioblastoma (GBM). Here, we show that angiogenesis also can be promoted by a direct interaction between brain tumor cells, including tumor cells with cancer stem-like properties (CSCs), and endothelial cells (ECs). As shown in vitro, this direct interaction is mediated by binding of integrin αvβ3 expressed on ECs to the RGD-peptide in L1CAM expressed on CSCs. It promotes both EC network formation and enhances directed migration toward basic fibroblast growth factor. Activation of αvβ3 and bone marrow tyrosine kinase on chromosome X (BMX) is required for migration stimulated by direct binding but not for migration stimulated by soluble factors. RGD-peptide treatment of mice with established intracerebral GBM xenografts significantly reduced the percentage of Sox2-positive tumor cells and CSCs in close proximity to ECs, decreased integrin αvβ3 and BMX activation and p130CAS phosphorylation in the ECs, and reduced the vessel surface area. These results reveal a previously unrecognized aspect of the regulation of angiogenesis in GBM that can impact therapeutic anti-angiogenic targeting.
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Affiliation(s)
- Monica E Burgett
- Department of Cancer Biology, Cleveland Clinic, Cleveland, OH, USA.,School of Biomedical Sciences, Kent State University, Kent, OH, USA
| | - Justin D Lathia
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Patrick Roth
- Department of Neurology, Laboratory of Molecular Neuro-Oncology, University Hospital, Zurich, Switzerland
| | - Amy S Nowacki
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH, USA
| | - Deni S Galileo
- Department of Biological Sciences, University of Delaware and Helen F. Graham Cancer Center and Research Institute, Christiana Care Health System, Newark, DE, USA
| | - Elena Pugacheva
- Department of Biochemistry, West Virginia University, Morgantown, VA, USA
| | - Ping Huang
- Department of Cancer Biology, Cleveland Clinic, Cleveland, OH, USA
| | | | - Meizhang Li
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Tatiana Byzova
- Department of Molecular Cardiology, Cleveland Clinic, Cleveland, OH, USA
| | - Tom Mikkelsen
- Department of Neurosurgery, Henry Ford Hospital, Detroit, MI, USA
| | - Shideng Bao
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Jeremy N Rich
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Michael Weller
- Department of Neurology, Laboratory of Molecular Neuro-Oncology, University Hospital, Zurich, Switzerland
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9
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Jun BJ, Vasanji A, Ricchetti ET, Rodriguez E, Subhas N, Li ZM, Iannotti JP. Quantification of regional variations in glenoid trabecular bone architecture and mineralization using clinical computed tomography images. J Orthop Res 2018; 36:85-96. [PMID: 28561262 DOI: 10.1002/jor.23620] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/19/2017] [Indexed: 02/04/2023]
Abstract
The purpose of this study was to demonstrate feasibility of a clinical CT imaging and analysis technique to quantify regional variations in trabecular bone architecture and mineralization of glenoid bones. Specifically, our objective was to determine to what extent clinical CT imaging of intact upper extremities can describe variations of trabecular bone architectures at anatomic and peri-implant regions by comparing trabecular bone architectures as measured by high-resolution, micro CT imaging of same excised glenoid bones. Bone volume fraction (BVF), trabecular bone thickness (TbTh), number of trabecular bone (TbN), spacing (TbS), pattern factor (TbPf), bone surface area (BSA), and skeletal connectivity (Conn.), in addition to bone mineral content (BMC) and bone mineral density (BMD), were quantified from both clinical and micro CT images using whole bone, anatomic, and peri-implant bone masks. Strong correlations of BVF, TbTh, TbSp, BMC, and BMD were found between clinical CT and micro CT imaging methods. The variations in BVF, TbTh, TbSp, TbN, BMC, and BMD at anatomical and peri-implant regions were larger than those at whole bone regions. In this study, we have demonstrated that this clinical CT imaging methodology can be used to quantify variations of a patient's glenoid bone at anatomic and peri-implant levels. Statement of Clinical Significance. An in vivo quantitative assessment of glenoid trabecular bone architecture in the anatomic and peri-implant regions may improve our understanding on the role of bone quality on glenoid component loosening following total shoulder arthroplasty. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:85-96, 2018.
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Affiliation(s)
- Bong-Jae Jun
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland 44195, Ohio.,Department of Biomedical Engineering, Cleveland Clinic, Cleveland 44195, Ohio
| | | | - Eric T Ricchetti
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland 44195, Ohio
| | - Eric Rodriguez
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland 44195, Ohio
| | - Naveen Subhas
- Department of Radiology, Cleveland Clinic, Cleveland 44195, Ohio
| | - Zong-Ming Li
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland 44195, Ohio.,Department of Biomedical Engineering, Cleveland Clinic, Cleveland 44195, Ohio
| | - Joseph P Iannotti
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland 44195, Ohio
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10
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Dimri M, Bilogan C, Pierce LX, Naegele G, Vasanji A, Gibson I, McClendon A, Tae K, Sakaguchi TF. Three-dimensional structural analysis reveals a Cdk5-mediated kinase cascade regulating hepatic biliary network branching in zebrafish. Development 2017; 144:2595-2605. [PMID: 28720653 DOI: 10.1242/dev.147397] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 05/31/2017] [Indexed: 12/17/2022]
Abstract
The intrahepatic biliary network is a highly branched three-dimensional network lined by biliary epithelial cells, but how its branching patterns are precisely established is not clear. We designed a new computer-based algorithm that quantitatively computes the structural differences of the three-dimensional networks. Utilizing the algorithm, we showed that inhibition of Cyclin-dependent kinase 5 (Cdk5) led to reduced branching in the intrahepatic biliary network in zebrafish. Further, we identified a previously unappreciated downstream kinase cascade regulated by Cdk5. Pharmacological manipulations of this downstream kinase cascade produced a crowded branching defect in the intrahepatic biliary network and influenced actin dynamics in biliary epithelial cells. We generated larvae carrying a mutation in cdk5 regulatory subunit 1a (cdk5r1a), an essential activator of Cdk5. cdk5r1a mutant larvae show similar branching defects as those observed in Cdk5 inhibitor-treated larvae. A small-molecule compound that interferes with the downstream kinase cascade rescued the mutant phenotype. These results provide new insights into branching morphogenesis of the intrahepatic biliary network.
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Affiliation(s)
- Manali Dimri
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Cassandra Bilogan
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Lain X Pierce
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Gregory Naegele
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | | | - Isabel Gibson
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Allyson McClendon
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Kevin Tae
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Takuya F Sakaguchi
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA .,Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195, USA
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11
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Dimri M, Bilogan C, Pierce LX, Naegele G, Vasanji A, Gibson I, McClendon A, Tae K, Sakaguchi TF. Three-dimensional structural analysis reveals a Cdk5-mediated kinase cascade regulating hepatic biliary network branching in zebrafish. J Cell Sci 2017. [DOI: 10.1242/jcs.208702] [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: 11/20/2022] Open
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12
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Ehlers JP, Wang K, Vasanji A, Hu M, Srivastava SK. Automated quantitative characterisation of retinal vascular leakage and microaneurysms in ultra-widefield fluorescein angiography. Br J Ophthalmol 2017; 101:696-699. [PMID: 28432113 DOI: 10.1136/bjophthalmol-2016-310047] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [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: 12/10/2016] [Revised: 03/19/2017] [Accepted: 03/30/2017] [Indexed: 11/04/2022]
Abstract
Ultra-widefield fluorescein angiography (UWFA) is an emerging imaging modality used to characterise pathology in the retinal vasculature such as microaneurysms (MAs) and vascular leakage. Despite its potential value for diagnosis and disease surveillance, objective quantitative assessment of retinal pathology by UWFA is currently limited because it requires laborious manual segmentation by trained human graders. In this report, we describe a novel fully automated software platform, which segments MAs and leakage areas in native and dewarped UWFA images with retinal vascular disease. Comparison of the algorithm with human grader-generated gold standards demonstrated significant strong correlations for MA and leakage areas (intraclass correlation coefficient (ICC)=0.78-0.87 and ICC=0.70-0.86, respectively, p=2.1×10-7 to 3.5×10-10 and p=7.8×10-6 to 1.3×10-9, respectively). These results suggest the algorithm performs similarly to human graders in MA and leakage segmentation and may be of significant utility in clinical and research settings.
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Affiliation(s)
- Justis P Ehlers
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Kevin Wang
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA.,School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | | | - Ming Hu
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA.,Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio, USA
| | - Sunil K Srivastava
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA
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13
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Tellez A, Hemming KN, Vasanji A, Kaufman ZJ, Hoover BA, Padala M, Brady DA, Rousselle S. NOVEL PRECLINICAL ASSESSMENT OF TRANSCATHETER MITRAL VALVE REPLACEMENT BY MICRO COMPUTED TOMOGRAPHY: MCT IMAGING GUIDED HISTOPATHOLOGICAL EVALUATION. J Am Coll Cardiol 2017. [DOI: 10.1016/s0735-1097(17)34459-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Baskin JZ, Soenjaya Y, McMasters J, Ko A, Vasanji A, Morris N, Eppell SJ. Nanophase bone substitute for craniofacial load bearing application: Pilot study in the rodent. J Biomed Mater Res B Appl Biomater 2017; 106:520-532. [PMID: 28194875 DOI: 10.1002/jbm.b.33857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/08/2016] [Accepted: 01/16/2017] [Indexed: 02/04/2023]
Abstract
An exploratory pilot study shows that a rodent mandibular defect model is useful in determining the biological response to a nanophase collagen/apatite composite designed as a biomimetic load-bearing bone substitute. Using a critical size defect, eight groups of rats (n = 3) were implanted with four renditions of the nanophase bone substitute (NBS) biomaterial. Each rendition was tested with and without recombinant human bone morphogenetic protein 2 (BMP2). NBS biomaterial renditions were: baseline, hyper-densified, d-ribose crosslinked, and d-ribose crosslinked and hyper-densified. Biological outcomes were assessed surgically, radiologically, and histologically. With the limited power available due to the small N's involved, some interesting hypotheses were generated that will be more fully investigated in future studies. BMP2 loaded NBS, when uncrosslinked, resulted in robust bone formation in the entire defect volume (regardless of porosity). Unloaded NBS were well tolerated but did not cause significant new bone formation in the defect volume. Densification alone had little effect on in vivo performance. Crosslinking thwarted implant uptake of BMP2 and resulted in fibrous encapsulation. It is concluded that the nanophase bone substitute is well tolerated in this bone defect model. When loaded with BMP2, implantation resulted in complete bony healing and defect closure with implant density (porosity) having little effect on bone healing or remodeling. Without BMP2 the biomaterial did not result in defect closure. Crosslinking, necessary to increase mechanical properties in an aqueous environment, disrupts osteointegration and BMP2 uptake. Alternate implant fabrication strategies will be necessary to achieve an improved balance between material strength and osteointegration. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 520-532, 2018.
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Affiliation(s)
- Jonathan Z Baskin
- Department of Otolaryngology-Head & Neck Surgery, Case Western Reserve University, Cleveland, OH, USA.,Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Yohannes Soenjaya
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - James McMasters
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Alvin Ko
- Department of Otolaryngology-Head & Neck Surgery, Henry Ford Hospital, Cleveland, OH, USA
| | - Amit Vasanji
- Image IQ, A Cleveland Clinic Innovation Company, Solon, OH, USA
| | - Nathan Morris
- Case Western Reserve University, Center for Clinical Investigations, Statistical Science Core, Cleveland, OH, USA
| | - Steven J Eppell
- Department of Otolaryngology-Head & Neck Surgery, Case Western Reserve University, Cleveland, OH, USA.,Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.,Department of Otolaryngology-Head and Neck Surgery and Facial Plastic and Reconstructive Surgery, Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA
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15
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Smith AD, Zand KA, Florez E, Sirous R, Shlapak D, Souza F, Roda M, Bryan J, Vasanji A, Griswold M, Lirette ST. Liver Surface Nodularity Score Allows Prediction of Cirrhosis Decompensation and Death. Radiology 2016; 283:711-722. [PMID: 27809664 DOI: 10.1148/radiol.2016160799] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Purpose To determine whether use of the liver surface nodularity (LSN) score, a quantitative biomarker derived from routine computed tomographic (CT) images, allows prediction of cirrhosis decompensation and death. Materials and Methods For this institutional review board-approved HIPAA-compliant retrospective study, adult patients with cirrhosis and Model for End-Stage Liver Disease (MELD) score within 3 months of initial liver CT imaging between January 3, 2006, and May 30, 2012, were identified from electronic medical records (n = 830). The LSN score was measured by using CT images and quantitative software. Competing risk regression was used to determine the association of the LSN score with hepatic decompensation and overall survival. A risk model combining LSN scores (<3 or ≥3) and MELD scores (<10 or ≥10) was created for predicting liver-related events. Results In patients with compensated cirrhosis, 40% (129 of 326) experienced decompensation during a median follow-up period of 4.22 years. After adjustment for competing risks including MELD score, LSN score (hazard ratio, 1.38; 95% confidence interval: 1.06, 1.79) was found to be independently predictive of hepatic decompensation. Median times to decompensation of patients at high (1.76 years, n = 48), intermediate (3.79 years, n = 126), and low (6.14 years, n = 152) risk of hepatic decompensation were significantly different (P < .001). Among the full cohort with compensated or decompensated cirrhosis, 61% (504 of 830) died during the median follow-up period of 2.26 years. After adjustment for competing risks, LSN score (hazard ratio, 1.22; 95% confidence interval: 1.11, 1.33) and MELD score (hazard ratio, 1.08; 95% confidence interval: 1.06, 1.11) were found to be independent predictors of death. Median times to death of patients at high (0.94 years, n = 315), intermediate (2.79 years, n = 312), and low (4.69 years, n = 203) risk were significantly different (P < .001). Conclusion The LSN score derived from routine CT images allows prediction of cirrhosis decompensation and death. ©RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- Andrew D Smith
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Kevin A Zand
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Edward Florez
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Reza Sirous
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Darya Shlapak
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Frederico Souza
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Manohar Roda
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Jason Bryan
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Amit Vasanji
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Michael Griswold
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
| | - Seth T Lirette
- From the Departments of Radiology (A.D.S., K.A.Z., E.F., R.S., D.S., F.S., M.R.) and Data Science (M.G., S.T.L.), University of Mississippi Medical Center, 2500 N State St, Jackson, MS 39216; and ImageIQ, Cleveland, Ohio (J.B., A.V.)
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16
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Smith AD, Zhang X, Bryan J, Souza F, Roda M, Sirous R, Zhang H, Vasanji A, Griswold M. Vascular Tumor Burden as a New Quantitative CT Biomarker for Predicting Metastatic RCC Response to Antiangiogenic Therapy. Radiology 2016; 281:484-498. [DOI: 10.1148/radiol.2016160143] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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17
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Smith AD, Branch CR, Zand K, Subramony C, Zhang H, Thaggard K, Hosch R, Bryan J, Vasanji A, Griswold M, Zhang X. Liver Surface Nodularity Quantification from Routine CT Images as a Biomarker for Detection and Evaluation of Cirrhosis. Radiology 2016; 280:771-81. [DOI: 10.1148/radiol.2016151542] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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18
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Burgett M, Lathia J, Roth P, Nowacki A, Pugacheva E, Huang P, Vasanji A, Meizhang L, Byzova T, Mikkelsen T, Bao S, Rich J, Weller M, Gladson C. Abstract 3380: Direct contact with perivascular tumor cells enhances integrin αvβ3 signaling and migration of endothelial cells. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-3380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The secretion of soluble pro-angiogenic factors by tumor cells and stromal cells in the perivascular niche promotes the aggressive angiogenesis that is typical of glioblastoma (GBM), which requires endothelial cell (EC) migration. Here, we show that angiogenesis can also be promoted by a direct interaction between brain tumor cells, including tumor cells with cancer stem-like properties (CSCs), and ECs. The direct interaction between CSCs and ECs was mediated by binding of integrin αvβ3 expressed on ECs to the RGD-peptide in L1CAM expressed on CSCs. Using in vitro assays, we found that this interaction increased network formation and migration-associated signaling events in ECs, including activation of integrin αvβ3, FAK, bone marrow tyrosine kinase on chromosome X (BMX), p130CAS, ERK and JNK. Comparison of the effects of co-culturing CSCs with ECs versus the effects of conditioned media from CSCs co-cultured with ECs indicated that upstream and downstream effector activation was not attributed to a secreted factor(s). Activation of αvβ3 and BMX was required for migration stimulated by direct binding but not for migration stimulated by soluble factors. RGD-peptide treatment of mice with established intracerebral GBM xenografts significantly reduced the percentage of Sox2-positive tumor cells (consistent with CSCs) in close proximity to ECs, decreased integrin αvβ3 and BMX activation and p130CAS phosphorylation in the ECs, and reduced the vessel surface area. These results show that direct interactions between CSCs and ECs have potent effects on EC migration and reveal a previously unrecognized aspect of the regulation of angiogenesis in GBM that can impact therapeutic anti-angiogenic targeting.
Citation Format: Monica Burgett, Justin Lathia, Patrick Roth, Amy Nowacki, Elena Pugacheva, Ping Huang, Amit Vasanji, Li Meizhang, Tatiana Byzova, Tom Mikkelsen, Shideng Bao, Jeremy Rich, Michael Weller, Candece Gladson. Direct contact with perivascular tumor cells enhances integrin αvβ3 signaling and migration of endothelial cells. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 3380.
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Affiliation(s)
- Monica Burgett
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Justin Lathia
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Amy Nowacki
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Ping Huang
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Li Meizhang
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Tatiana Byzova
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Shideng Bao
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Jeremy Rich
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Candece Gladson
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
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19
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Venere M, Horbinski C, Crish JF, Jin X, Vasanji A, Major J, Burrows AC, Chang C, Prokop J, Wu Q, Sims PA, Canoll P, Summers MK, Rosenfeld SS, Rich JN. The mitotic kinesin KIF11 is a driver of invasion, proliferation, and self-renewal in glioblastoma. Sci Transl Med 2016; 7:304ra143. [PMID: 26355032 DOI: 10.1126/scitranslmed.aac6762] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The proliferative and invasive nature of malignant cancers drives lethality. In glioblastoma, these two processes are presumed mutually exclusive and hence termed "go or grow." We identified a molecular target that shuttles between these disparate cellular processes-the molecular motor KIF11. Inhibition of KIF11 with a highly specific small-molecule inhibitor stopped the growth of the more treatment-resistant glioblastoma tumor-initiating cells (TICs, or cancer stem cells) as well as non-TICs and impeded tumor initiation and self-renewal of the TIC population. Targeting KIF11 also hit the other arm of the "go or grow" cell fate decision by reducing glioma cell invasion. Administration of a KIF11 inhibitor to mice bearing orthotopic glioblastoma prolonged their survival. In its role as a shared molecular regulator of cell growth and motility across intratumoral heterogeneity, KIF11 is a compelling therapeutic target for glioblastoma.
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Affiliation(s)
- Monica Venere
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA. Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Craig Horbinski
- Department of Pathology and Laboratory, Medicine University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - James F Crish
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Xun Jin
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | | | - Jennifer Major
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Amy C Burrows
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Cathleen Chang
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - John Prokop
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Quilian Wu
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Peter A Sims
- Department of Systems Biology, Columbia University Medical Center, New York, NY 10032, USA. Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center, New York, NY 10032, USA
| | - Peter Canoll
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Matthew K Summers
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA. Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Steven S Rosenfeld
- Department of Cancer Biology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA. Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Jeremy N Rich
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Foundation, Cleveland, OH 44195, USA. Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.
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20
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Bhatnagar A, Unal H, Jagannathan R, Kaveti S, Duan ZH, Yong S, Vasanji A, Kinter M, Desnoyer R, Karnik SS. Correction: Interaction of G-Protein βγ Complex with Chromatin Modulates GPCR-Dependent Gene Regulation. PLoS One 2016; 11:e0155198. [PMID: 27144543 PMCID: PMC4856381 DOI: 10.1371/journal.pone.0155198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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21
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Samsa WE, Vasanji A, Midura RJ, Kondratov RV. Deficiency of circadian clock protein BMAL1 in mice results in a low bone mass phenotype. Bone 2016; 84:194-203. [PMID: 26789548 PMCID: PMC4755907 DOI: 10.1016/j.bone.2016.01.006] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/01/2016] [Accepted: 01/05/2016] [Indexed: 12/16/2022]
Abstract
The circadian clock is an endogenous time keeping system that controls the physiology and behavior of many organisms. The transcription factor Brain and Muscle ARNT-like Protein 1 (BMAL1) is a component of the circadian clock and necessary for clock function. Bmal1(-/-) mice display accelerated aging and many accompanying age associated pathologies. Here, we report that mice deficient for BMAL1 have a low bone mass phenotype that is absent at birth and progressively worsens over their lifespan. Accelerated aging of these mice is associated with the formation of bony bridges occurring across the metaphysis to the epiphysis, resulting in shorter long bones. Using micro-computed tomography we show that Bmal1(-/-) mice have reductions in cortical and trabecular bone volume and other micro-structural parameters and a lower bone mineral density. Histology shows a deficiency of BMAL1 results in a reduced number of active osteoblasts and osteocytes in vivo. Isolation of bone marrow derived mesenchymal stem cells from Bmal1(-/-) mice demonstrate a reduced ability to differentiate into osteoblasts in vitro, which likely explains the observed reductions in osteoblasts and osteocytes, and may contribute to the observed osteopenia. Our data support the role of the circadian clock in the regulation of bone homeostasis and shows that BMAL1 deficiency results in a low bone mass phenotype.
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Affiliation(s)
- William E Samsa
- Center for Gene Regulation in Health and Diseases, BGES, Cleveland State University, 2121 Euclid Ave., Cleveland, OH 44115-2214, USA.
| | - Amit Vasanji
- Department of Biomedical Engineering, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA.
| | - Ronald J Midura
- Department of Biomedical Engineering, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA.
| | - Roman V Kondratov
- Center for Gene Regulation in Health and Diseases, BGES, Cleveland State University, 2121 Euclid Ave., Cleveland, OH 44115-2214, USA.
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22
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Asosingh K, Vasanji A, Tipton A, Queisser K, Wanner N, Janocha A, Grandon D, Anand-Apte B, Rothenberg ME, Dweik R, Erzurum SC. Eotaxin-Rich Proangiogenic Hematopoietic Progenitor Cells and CCR3+ Endothelium in the Atopic Asthmatic Response. J Immunol 2016; 196:2377-87. [PMID: 26810221 DOI: 10.4049/jimmunol.1500770] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 12/22/2015] [Indexed: 12/12/2022]
Abstract
Angiogenesis is closely linked to and precedes eosinophilic infiltration in asthma. Eosinophils are recruited into the airway by chemoattractant eotaxins, which are expressed by endothelial cells, smooth muscles cells, epithelial cells, and hematopoietic cells. We hypothesized that bone marrow-derived proangiogenic progenitor cells that contain eotaxins contribute to the initiation of angiogenesis and inflammation in asthma. Whole-lung allergen challenge of atopic asthma patients revealed vascular activation occurs within hours of challenge and before airway inflammation. The eotaxin receptor CCR3 was expressed at high levels on submucosal endothelial cells in patients and a murine model of asthma. Ex vivo exposure of murine endothelial cells to eotaxins induced migration and angiogenesis. In mechanistic studies, wild-type mice transplanted with eotaxin-1/2-deficient bone marrow had markedly less angiogenesis and inflammation in an atopic asthma model, whereas adoptive transfer of proangiogenic progenitor cells from wild-type mice in an atopic asthma model into the eotaxin-1/2-deficient mice led to angiogenesis and airway inflammation. The findings indicate that Th2-promoting hematopoietic progenitor cells are rapidly recruited to the lung upon allergen exposure and release eotaxins that coordinately activate endothelial cells, angiogenesis, and airway inflammation.
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Affiliation(s)
- Kewal Asosingh
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195;
| | | | - Aaron Tipton
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195
| | | | - Nicholas Wanner
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195
| | - Allison Janocha
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195
| | - Deepa Grandon
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Bela Anand-Apte
- Cole Eye Institute, Cleveland Clinic, Cleveland, OH 44195; Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; and
| | - Marc E Rothenberg
- Division of Allergy and Immunology, Cincinnati Children's Hospital, Cincinnati, OH 45229
| | - Raed Dweik
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Serpil C Erzurum
- Department of Pathobiology, Cleveland Clinic, Cleveland, OH 44195; Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195
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23
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Burgett ME, Lathia JD, Roth P, Nowacki AS, Huang P, Vasanji A, Li M, Byzova T, Mikkelsen T, Bao S, Rich J, Weller M, Gladson CL. Abstract 4178: L1CAM and integrin αvβ3 mediate direct cell contact between cancer stem cells and endothelial cells: Promotion of endothelial cell migration and survival. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-4178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Sprouting angiogenesis requires endothelial cell (EC) migration. In glioblastoma (GBM), cancer stem cells (CSC) in the perivascular niche secrete factors that promote EC migration. Here, we identify a direct interaction between the CSCs and ECs that is mediated by RGD-peptide-dependent binding of L1CAM on CSCs with integrin αvβ3 on ECs. Using in vitro assays, we found that this interaction increased migration-associated signaling events in ECs, including activation of integrin
αvβ3, ERK, JNK and Akt, and VCAM-1 and E-selectin mRNA expression. Comparison of the effects of co-culturing CSCs with ECs versus the effects of conditioned media from CSCs co-cultured with ECs indicated that the effects of the direct interaction and soluble factors differed quantitatively and qualitatively. The direct interactions stimulated the migration of ECs and primed them to the migratory effects of soluble factors produced by the CSCs. The direct interaction also enhanced expression of pro-survival genes in CSCs and ECs. In GBM biopsies, Sox2-positive tumor cells were localized in close proximity to ECs and injection of β3-negative ECs or L1CAM-negative CSCs into brain slices in organotypic culture resulted in reduced interactions between ECs and CSCs.
RGD-peptide treatment of mice with established intracerebral GBM xenografts increased the mean distance of Sox2-positive tumor cells from ECs, decreased integrin αvβ3 activation and decreased vessel surface area. These data show that direct interactions between CSCs and ECs have potent effects on EC migration and angiogenesis in GBM and have implications for the design of angiogenesis-targeted therapies.
Citation Format: Monica E. Burgett, Justin D. Lathia, Patrick Roth, Amy S. Nowacki, Ping Huang, Amit Vasanji, Meizhang Li, Tatiana Byzova, Tom Mikkelsen, Shideng Bao, Jeremy Rich, Michael Weller, Candece L. Gladson. L1CAM and integrin αvβ3 mediate direct cell contact between cancer stem cells and endothelial cells: Promotion of endothelial cell migration and survival. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 4178. doi:10.1158/1538-7445.AM2015-4178
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Affiliation(s)
| | | | | | - Amy S. Nowacki
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Ping Huang
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Meizhang Li
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Tatiana Byzova
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | | | - Shideng Bao
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - Jeremy Rich
- 1The Cleveland Clinic Lerner Research Institute, Cleveland, OH
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Abstract
Objective assessment of retinal layer integrity with optical coherence tomography (OCT) is currently limited. The ellipsoid zone (EZ) has been identified as an important feature on OCT that has critical prognostic value in macular disorders. In this report, we describe a novel assessment tool for EZ integrity that provides visual and quantitative assessment across an OCT data set. Using this algorithm, we describe the findings in multiple clinical examples, including normal controls, age-related macular degeneration, drug effects (eg, ocriplasmin, hydroxychloroquine) and effects of surgical manipulation (eg, following membrane peeling using intraoperative OCT). EZ mapping provides both en face visualisation of EZ integrity and EZ-retinal pigment epithelium height. Additionally, volumetric, area and linear measurements are feasible using this assessment tool.
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Affiliation(s)
- Yuji Itoh
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Justis P Ehlers
- Ophthalmic Imaging Center, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, USA
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25
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Muppala S, Frolova E, Xiao R, Krukovets I, Yoon S, Hoppe G, Vasanji A, Plow E, Stenina-Adognravi O. Proangiogenic Properties of Thrombospondin-4. Arterioscler Thromb Vasc Biol 2015; 35:1975-86. [PMID: 26139464 DOI: 10.1161/atvbaha.115.305912] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [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: 11/11/2014] [Accepted: 06/22/2015] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Thrombospondin-4 (TSP-4) is 1 of the 5 members of the thrombospondin protein family. TSP-1 and TSP-2 are potent antiangiogenic proteins. However, angiogenic properties of the 3 other TSPs, which do not contain the domains associated with the antiangiogeneic activity of TSP-1 and TSP-2, have not been explored. In our previous studies, we found that TSP-4 is expressed in the vascular matrix of blood vessels of various sizes and is especially abundant in capillaries. We sought to identify the function of TSP-4 in the regulation of angiogenesis. APPROACH AND RESULTS The effect of TSP-4 in in vivo angiogenesis models and its effect on angiogenesis-related properties in cultured cells were assessed using Thbs4(-/-) mice, endothelial cells (EC) derived from these mice, and recombinant TSP-4. Angiogenesis was decreased in Thbs4(-/-) mice compared with wild-type mice. TSP-4 was detected in the lumen of the growing blood vessels. Mice expressing the P387 TSP-4 variant, which was previously associated with coronary artery disease and found to be more active in its cellular interactions, displayed greater angiogenesis compared with A387 form. Lung EC from Thbs4(-/-) mice exhibited decreased adhesion, migration, and proliferation capacities compared with EC from wild-type mice. Recombinant TSP-4 promoted proliferation and the migration of EC. Integrin α2 and gabapentin receptor α2δ-1 were identified as receptors involved in regulation of EC adhesion, migration, and proliferation by TSP-4. CONCLUSION TSP-4, an extracellular matrix protein previously associated with tissue remodeling, is now demonstrated to possess proangiogenic activity.
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Affiliation(s)
- Santoshi Muppala
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Ella Frolova
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Roy Xiao
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Irene Krukovets
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Suzy Yoon
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - George Hoppe
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Amit Vasanji
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Edward Plow
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.)
| | - Olga Stenina-Adognravi
- From the Department of Molecular Cardiology (S.M., E.F., R.X., I.K., E.P., O.S.-A.), and Cole Eye Institute (S.Y., G.H.), Cleveland Clinic, OH; and ImageIQ Inc, Cleveland, OH (A.V.).
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Sharma S, Lowder CY, Vasanji A, Baynes K, Kaiser PK, Srivastava SK. Automated Analysis of Anterior Chamber Inflammation by Spectral-Domain Optical Coherence Tomography. Ophthalmology 2015; 122:1464-70. [DOI: 10.1016/j.ophtha.2015.02.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/16/2015] [Accepted: 02/19/2015] [Indexed: 10/23/2022] Open
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Stoltz K, Sinyuk M, Hale JS, Wu Q, Otvos B, Walker K, Vasanji A, Rich JN, Hjelmeland AB, Lathia JD. Development of a Sox2 reporter system modeling cellular heterogeneity in glioma. Neuro Oncol 2014; 17:361-71. [PMID: 25416826 DOI: 10.1093/neuonc/nou320] [Citation(s) in RCA: 19] [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: 04/24/2014] [Accepted: 10/26/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Malignant gliomas are complex systems containing a number of factors that drive tumor initiation and progression, including genetic aberrations that lead to extensive cellular heterogeneity within the neoplastic compartment. Mouse models recapitulate these genetic aberrations, but readily observable heterogeneity remains challenging. METHODS To interrogate cellular heterogeneity in mouse glioma models, we utilized a replication-competent avian sarcoma-leukosis virus long terminal repeat with splice acceptor/tumor virus A (RCAS-tva) system to generate spontaneous mouse gliomas that contained a Sox2-enhanced green fluorescent protein (EGFP) reporter. Glial fibrillary acidic protein-tva mice were crossed with Sox2-EGFP mice, and tumors were initiated that contained a subpopulation of Sox2-EGFP-high cells enriched for tumor-initiating cell properties such as self-renewal, multilineage differentiation potential, and perivascular localization. RESULTS Following implantation into recipient mice, Sox2-EGFP-high cells generated tumors containing Sox2-EGFP-high and Sox2-EGFP-low cells. Kinomic analysis of Sox2-EGFP-high cells revealed activation of known glioma signaling pathways that are strongly correlated with patient survival including platelet-derived growth factor receptor beta, phosphoinositide-3 kinase, and vascular endothelial growth factor. Our functional analysis identified active feline sarcoma (Fes) signaling in Sox2-EGFP-high cells. Fes negatively correlated with glioma patient survival and was coexpressed with Sox2-positive cells in glioma xenografts and primary patient-derived tissue. CONCLUSIONS Our RCAS-tva/Sox2-EGFP model will empower closer examination of cellular heterogeneity and will be useful for identifying novel glioma pathways as well as testing preclinical treatment efficacy.
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Affiliation(s)
- Kevin Stoltz
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Maksim Sinyuk
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - James S Hale
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Qiulian Wu
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Balint Otvos
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Kiera Walker
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Amit Vasanji
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Jeremy N Rich
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Anita B Hjelmeland
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
| | - Justin D Lathia
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (K.S., M.S., J.S.H., B.O., J.D.L.); Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio (Q.W., J.N.R.); Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio (M.S., J.D.L.); Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama (K.W., A.B.H.); Image I.Q., Cleveland, Ohio (A.V.); Case Comprehensive Cancer Center, Cleveland, Ohio (J.N.R., J.D.L.)
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Burgett ME, Huang P, Tipps RS, Vasanji A, Lathia JD, Li M, Bao S, Rich JN, Gladson CL. Abstract 3898: Glioma stem cells promote brain endothelial cell motility: a new mechanism for the direct interaction of glioma stem cells with endothelial cells. Tumour Biol 2014. [DOI: 10.1158/1538-7445.am2013-3898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Gladson CL, Burgett ME, Lathia JD, Roth P, Huang P, Vasanji A, Li M, Bao S, Nowacki A, RIch JN, Weller M. DIRECT CELL CONTACT BETWEEN BRAIN ENDOTHELIAL CELLS AND GLIOMA STEM CELLS PROMOTES ENDOTHELIAL CELL MIGRATION. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou208.49] [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: 11/14/2022] Open
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Frolova EG, Drazba J, Krukovets I, Kostenko V, Blech L, Harry C, Vasanji A, Drumm C, Sul P, Jenniskens GJ, Plow EF, Stenina-Adognravi O. Control of organization and function of muscle and tendon by thrombospondin-4. Matrix Biol 2014; 37:35-48. [PMID: 24589453 DOI: 10.1016/j.matbio.2014.02.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/01/2014] [Accepted: 02/01/2014] [Indexed: 01/28/2023]
Abstract
Thrombospondins (TSPs) are multifunctional proteins that are deposited in the extracellular matrix where they directly affect the function of vascular and other cell types. TSP-4, one of the 5 TSP family members, is expressed abundantly in tendon and muscle. We have examined the effect of TSP-4 deficiency on tendon collagen and skeletal muscle morphology and function. In Thbs4(-/-) mice, tendon collagen fibrils are significantly larger than in wild-type mice, and there is no compensatory over-expression of TSP-3 and TSP-5, the two TSPs most highly homologous to TSP-4, in the deficient mice. TSP-4 is expressed in skeletal muscle, and higher levels of TSP-4 protein are associated with the microvasculature of red skeletal muscle with high oxidative metabolism. Lack of TSP-4 in medial soleus, red skeletal muscle with predominant oxidative metabolism, is associated with decreased levels of several specific glycosaminoglycan modifications, decreased expression of a TGFβ receptor beta-glycan, decreased activity of lipoprotein lipase, which associates with vascular cell surfaces by binding to glycosaminoglycans, and decreased uptake of VLDL. The soleus muscle is smaller and hind- and fore-limb grip strength is reduced in Thbs4(-/-) mice compared to wild-type mice. These observations suggest that TSP-4 regulates the composition of the ECM at major sites of its deposition, tendon and muscle, and the absence of TSP-4 alters the organization, composition and physiological functions of these tissues.
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Affiliation(s)
- Ella G Frolova
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Judith Drazba
- Imaging Core, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Irene Krukovets
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Volodymyr Kostenko
- Department of Neurology, Neuromuscular Section, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Lauren Blech
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Christy Harry
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Amit Vasanji
- Biomedical Imaging and Analysis Core, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Carla Drumm
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Pavel Sul
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Guido J Jenniskens
- Department of Biochemistry 194, University Medical Center, NCMLS, Nijmegen, The Netherlands; ModiQuest Research BV, Nijmegen, The Netherlands
| | - Edward F Plow
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Olga Stenina-Adognravi
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, United States.
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31
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Wang A, Midura RJ, Vasanji A, Wang AJ, Hascall VC. Hyperglycemia diverts dividing osteoblastic precursor cells to an adipogenic pathway and induces synthesis of a hyaluronan matrix that is adhesive for monocytes. J Biol Chem 2014; 289:11410-11420. [PMID: 24569987 DOI: 10.1074/jbc.m113.541458] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Isolated rat bone marrow stromal cells cultured in osteogenic medium in which the normal 5.6 mm glucose is changed to hyperglycemic 25.6 mm glucose greatly increase lipid formation between 21-31 days of culture that is associated with decreased biomineralization, up-regulate expression of cyclin D3 and two adipogenic markers (CCAAT/enhancer binding protein α and peroxisome proliferator-activated receptor γ) within 5 days of culture, increase neutral and polar lipid synthesis within 5 days of culture, and form a monocyte-adhesive hyaluronan matrix through an endoplasmic reticulum stress-induced autophagic mechanism. Evidence is also provided that, by 4 weeks after diabetes onset in the streptozotocin-induced diabetic rat model, there is a large loss of trabecular bone mineral density without apparent proportional changes in underlying collagen matrices, a large accumulation of a hyaluronan matrix within the trabecular bone marrow, and adipocytes and macrophages embedded in this hyaluronan matrix. These results support the hypothesis that hyperglycemia in bone marrow diverts dividing osteoblastic precursor cells (bone marrow stromal cells) to a metabolically stressed adipogenic pathway that induces synthesis of a hyaluronan matrix that recruits inflammatory cells and establishes a chronic inflammatory process that demineralizes trabecular cancellous bone.
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Affiliation(s)
- Aimin Wang
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195.
| | - Ronald J Midura
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195
| | - Amit Vasanji
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195
| | - Andrew J Wang
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195
| | - Vincent C Hascall
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195
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Lotti F, Jarrar AM, Pai RK, Hitomi M, Lathia J, Mace A, Gantt GA, Sukhdeo K, DeVecchio J, Vasanji A, Leahy P, Hjelmeland AB, Kalady MF, Rich JN. Chemotherapy activates cancer-associated fibroblasts to maintain colorectal cancer-initiating cells by IL-17A. ACTA ACUST UNITED AC 2013; 210:2851-72. [PMID: 24323355 PMCID: PMC3865474 DOI: 10.1084/jem.20131195] [Citation(s) in RCA: 298] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Chemotherapy stimulates cancer-associated fibroblasts to secrete interleukin-17A to provide maintenance cues to support the growth of colorectal cancer-initiating cells. Many solid cancers display cellular hierarchies with self-renewing, tumorigenic stemlike cells, or cancer-initiating cells (CICs) at the apex. Whereas CICs often exhibit relative resistance to conventional cancer therapies, they also receive critical maintenance cues from supportive stromal elements that also respond to cytotoxic therapies. To interrogate the interplay between chemotherapy and CICs, we investigated cellular heterogeneity in human colorectal cancers. Colorectal CICs were resistant to conventional chemotherapy in cell-autonomous assays, but CIC chemoresistance was also increased by cancer-associated fibroblasts (CAFs). Comparative analysis of matched colorectal cancer specimens from patients before and after cytotoxic treatment revealed a significant increase in CAFs. Chemotherapy-treated human CAFs promoted CIC self-renewal and in vivo tumor growth associated with increased secretion of specific cytokines and chemokines, including interleukin-17A (IL-17A). Exogenous IL-17A increased CIC self-renewal and invasion, and targeting IL-17A signaling impaired CIC growth. Notably, IL-17A was overexpressed by colorectal CAFs in response to chemotherapy with expression validated directly in patient-derived specimens without culture. These data suggest that chemotherapy induces remodeling of the tumor microenvironment to support the tumor cellular hierarchy through secreted factors. Incorporating simultaneous disruption of CIC mechanisms and interplay with the tumor microenvironment could optimize therapeutic targeting of cancer.
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Affiliation(s)
- Fiorenza Lotti
- Department of Stem Cell Biology and Regenerative Medicine, 2 Department of Cellular and Molecular Medicine, and 3 Department of Cancer Biology, Lerner Research Institute; 4 Department of Colorectal Surgery, Digestive Disease Institute; 5 Department of Anatomical Pathology, Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH 44195
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Zheng Q, Banaszak L, Fracci S, Basali D, Dunlap SM, Hursting SD, Rich JN, Hjlemeland AB, Vasanji A, Berger NA, Lathia JD, Reizes O. Leptin receptor maintains cancer stem-like properties in triple negative breast cancer cells. Endocr Relat Cancer 2013; 20:797-808. [PMID: 24025407 PMCID: PMC3843956 DOI: 10.1530/erc-13-0329] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Despite new therapies, breast cancer continues to be the second leading cause of cancer mortality in women, a consequence of recurrence and metastasis. In recent years, a population of cancer cells has been identified, called cancer stem cells (CSCs) with self-renewal capacity, proposed to underlie tumor recurrence and metastasis. We previously showed that the adipose tissue cytokine LEPTIN, increased in obesity, promotes the survival of CSCs in vivo. Here, we tested the hypothesis that the leptin receptor (LEPR), expressed in mammary cancer cells, is necessary for maintaining CSC-like and metastatic properties. We silenced LEPR via shRNA lentivirus transduction and determined that the expression of stem cell self-renewal transcription factors NANOG, SOX2, and OCT4 (POU5F1) is inhibited. LEPR-NANOG signaling pathway is conserved between species because we can rescue NANOG expression in human LEPR-silenced cells with the mouse LepR. Using a NANOG promoter GFP reporter, we showed that LEPR is enriched in NANOG promoter active (GFP+) cells. In lineage tracing studies, we showed that the GFP+ cells divide in a symmetric and asymmetric manner. LEPR-silenced MDA-MB-231 cells exhibit a mesenchymal to epithelial transition morphologically, increased E-CADHERIN and decreased VIMENTIN expression compared with control cells. Finally, LEPR-silenced cells exhibit reduced cell proliferation, self-renewal in tumor sphere assays, and tumor outgrowth in xenotransplant studies. Given the emergence of NANOG as a pro-carcinogenic protein in multiple cancers, these studies suggest that inhibition of LEPR may be a promising therapeutic approach to inhibit NANOG and thereby neutralize CSC functions.
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Affiliation(s)
- Qiao Zheng
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
| | - Lauren Banaszak
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
| | - Sarah Fracci
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
| | - Diana Basali
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
| | - Sarah M. Dunlap
- Department of Nutritional Sciences, The University of Texas, Austin, TX
| | - Stephen D. Hursting
- Department of Nutritional Sciences, The University of Texas, Austin, TX
- Department of Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, TX
| | - Jeremy N. Rich
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
- Case Comprehensive Cancer Center, Cleveland, OH
| | - Anita B. Hjlemeland
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
- Case Comprehensive Cancer Center, Cleveland, OH
| | | | | | - Justin D. Lathia
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
- Case Comprehensive Cancer Center, Cleveland, OH
| | - Ofer Reizes
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH
- Case Comprehensive Cancer Center, Cleveland, OH
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Luangphakdy V, Walker E, Shinohara K, Pan H, Hefferan T, Bauer TW, Stockdale L, Saini S, Dadsetan M, Runge MB, Vasanji A, Griffith L, Yaszemski M, Muschler GF. Evaluation of osteoconductive scaffolds in the canine femoral multi-defect model. Tissue Eng Part A 2013; 19:634-48. [PMID: 23215980 DOI: 10.1089/ten.tea.2012.0289] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Treatment of large segmental bone defects remains an unsolved clinical challenge, despite a wide array of existing bone graft materials. This project was designed to rapidly assess and compare promising biodegradable osteoconductive scaffolds for use in the systematic development of new bone regeneration methodologies that combine scaffolds, sources of osteogenic cells, and bioactive scaffold modifications. Promising biomaterials and scaffold fabrication methods were identified in laboratories at Rutgers, MIT, Integra Life Sciences, and Mayo Clinic. Scaffolds were fabricated from various materials, including poly(L-lactide-co-glycolide) (PLGA), poly(L-lactide-co-ɛ-caprolactone) (PLCL), tyrosine-derived polycarbonate (TyrPC), and poly(propylene fumarate) (PPF). Highly porous three-dimensional (3D) scaffolds were fabricated by 3D printing, laser stereolithography, or solvent casting followed by porogen leaching. The canine femoral multi-defect model was used to systematically compare scaffold performance and enable selection of the most promising substrate(s) on which to add cell sourcing options and bioactive surface modifications. Mineralized cancellous allograft (MCA) was used to provide a comparative reference to the current clinical standard for osteoconductive scaffolds. Percent bone volume within the defect was assessed 4 weeks after implantation using both MicroCT and limited histomorphometry. Bone formed at the periphery of all scaffolds with varying levels of radial ingrowth. MCA produced a rapid and advanced stage of bone formation and remodeling throughout the defect in 4 weeks, greatly exceeding the performance of all polymer scaffolds. Two scaffold constructs, TyrPC(PL)/TCP and PPF4(SLA)/HA(PLGA) (Dip), proved to be significantly better than alternative PLGA and PLCL scaffolds, justifying further development. MCA remains the current standard for osteoconductive scaffolds.
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Affiliation(s)
- Viviane Luangphakdy
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA
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Seerapu HR, Borthakur S, Kong N, Agrawal S, Drazba J, Vasanji A, Fantin A, Ruhrberg C, Buck M, Horowitz A. The cytoplasmic domain of neuropilin-1 regulates focal adhesion turnover. FEBS Lett 2013; 587:3392-9. [PMID: 24021649 DOI: 10.1016/j.febslet.2013.08.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 08/26/2013] [Indexed: 01/13/2023]
Abstract
Though the vascular endothelial growth factor coreceptor neuropilin-1 (Nrp1) plays a critical role in vascular development, its precise function is not fully understood. We identified a group of novel binding partners of the cytoplasmic domain of Nrp1 that includes the focal adhesion regulator, Filamin A (FlnA). Endothelial cells (ECs) expressing a Nrp1 mutant devoid of the cytoplasmic domain (nrp1(cyto)(Δ/Δ)) migrated significantly slower in response to VEGF relative to the cells expressing wild-type Nrp1 (nrp1(+/+) cells). The rate of FA turnover in VEGF-treated nrp1(cyto)(Δ/Δ) ECs was an order of magnitude lower in comparison to nrp1(+/+) ECs, thus accounting for the slower migration rate of the nrp1(cyto)(Δ/Δ) ECs.
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Affiliation(s)
- Himabindu Reddy Seerapu
- Department of Molecular Cardiology, Lerner Research Institute, the Cleveland Clinic, Cleveland, OH 44195, United States
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Bhatnagar A, Unal H, Jagannathan R, Kaveti S, Duan ZH, Yong S, Vasanji A, Kinter M, Desnoyer R, Karnik SS. Interaction of G-protein βγ complex with chromatin modulates GPCR-dependent gene regulation. PLoS One 2013; 8:e52689. [PMID: 23326349 PMCID: PMC3541368 DOI: 10.1371/journal.pone.0052689] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 11/19/2012] [Indexed: 11/21/2022] Open
Abstract
Heterotrimeric G-protein signal transduction initiated by G-protein-coupled receptors (GPCRs) in the plasma membrane is thought to propagate through protein-protein interactions of subunits, Gα and Gβγ in the cytosol. In this study, we show novel nuclear functions of Gβγ through demonstrating interaction of Gβ2 with integral components of chromatin and effects of Gβ2 depletion on global gene expression. Agonist activation of several GPCRs including the angiotensin II type 1 receptor specifically augmented Gβ2 levels in the nucleus and Gβ2 interacted with specific nucleosome core histones and transcriptional modulators. Depletion of Gβ2 repressed the basal and angiotensin II-dependent transcriptional activities of myocyte enhancer factor 2. Gβ2 interacted with a sequence motif that was present in several transcription factors, whose genome-wide binding accounted for the Gβ2-dependent regulation of approximately 2% genes. These findings suggest a wide-ranging mechanism by which direct interaction of Gβγ with specific chromatin bound transcription factors regulates functional gene networks in response to GPCR activation in cells.
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Affiliation(s)
- Anushree Bhatnagar
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Hamiyet Unal
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Rajaganapathi Jagannathan
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Suma Kaveti
- Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Zhong-Hui Duan
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Department of Computer Science, University of Akron, Akron, Ohio, United States of America
| | - Sandro Yong
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Amit Vasanji
- Biomedical Imaging and Analysis Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Michael Kinter
- Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Russell Desnoyer
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Sadashiva S. Karnik
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- * E-mail:
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Bourke HE, Salmon LJ, Waller A, Winalski CS, Williams HA, Linklater JM, Vasanji A, Roe JP, Pinczewski LA. Randomized controlled trial of osteoconductive fixation screws for anterior cruciate ligament reconstruction: a comparison of the Calaxo and Milagro screws. Arthroscopy 2013; 29:74-82. [PMID: 23276415 DOI: 10.1016/j.arthro.2012.10.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 10/24/2012] [Accepted: 10/24/2012] [Indexed: 02/02/2023]
Abstract
PURPOSE To compare the outcome of 2 bioabsorbable screws for tibial interference fixation in anterior cruciate ligament reconstruction with reference to rate of absorption, osteoconductive properties, and clinical outcome. METHODS Patients undergoing primary anterior cruciate ligament reconstruction with hamstring autograft in a single unit were invited to participate in this study. Patients were randomized to receive either the Calaxo screw (Smith & Nephew, Andover, MA) or Milagro screw (DePuy Mitek, Raynham, MA) for tibial fixation. Patients were reviewed with subjective and objective evaluation by use of the International Knee Documentation Committee form, Lysholm score, KT-1000 arthrometry (MEDmetric, San Diego, CA), and clinical examination. Magnetic resonance imaging was performed at 1 year and computed tomography scanning at 1 week and at 6, 12, and 24 months. RESULTS Sixty patients agreed to participate in the study, with 32 patients randomized to the Calaxo screw and 28 to the Milagro screw for tibial fixation. There was no significant difference in subjective or objective clinical outcome between the 2 groups. At 24 months, 88% of Calaxo screws showed complete screw resorption compared with 0% of Milagro screws (P < .001). Tibial cysts were present in 88% of the Calaxo group and 7% of the Milagro group (P = .001). At 24 months, the mean volume of new bone formation for the Calaxo group was 21% of original screw volume. Ossification of the Milagro screw was unable to be accurately assessed as a result of incomplete screw resorption. CONCLUSIONS Both screws showed similar favorable objective and subjective outcomes at 2 years. The Calaxo screw resorbed completely over a period of 6 months and was associated with a high incidence of intra-tunnel cyst formation. The Milagro screw increased in volume over a period of 6 months, followed by a gradual resorption, which was still ongoing at 2 years. Both screws were associated with tunnel widening, and neither showed evidence of significant tunnel ossification. We conclude that, despite satisfactory clinical outcomes, the addition of "osteoconductive" materials to bioabsorbable screws is not associated with bone formation at the screw site at 2 years. LEVEL OF EVIDENCE Level I, randomized controlled trial.
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Affiliation(s)
- Henry E Bourke
- North Sydney Orthopaedic and Sports Medicine Centre, The Mater Clinic, Wollstonecraft, Australia
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Caralla T, Joshi P, Fleury S, Luangphakdy V, Shinohara K, Pan H, Boehm C, Vasanji A, Hefferan TE, Walker E, Yaszemski M, Hascall V, Zborowski M, Muschler GF. In vivo transplantation of autogenous marrow-derived cells following rapid intraoperative magnetic separation based on hyaluronan to augment bone regeneration. Tissue Eng Part A 2012; 19:125-34. [PMID: 23082937 DOI: 10.1089/ten.tea.2011.0622] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [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] Open
Abstract
INTRODUCTION This project was designed to test the hypothesis that rapid intraoperative processing of bone marrow based on hyaluronan (HA) could be used to improve the outcome of local bone regeneration if the concentration and prevalence of marrow-derived connective tissue progenitors (CTPs) could be increased and nonprogenitors depleted before implantation. METHODS HA was used as a marker for positive selection of marrow-derived CTPs using magnetic separation (MS) to obtain a population of HA-positive cells with an increased CTP prevalence. Mineralized cancellous allograft (MCA) was used as an osteoconductive carrier scaffold for loading of HA-positive cells. The canine femoral multidefect model was used and four cylindrical defects measuring 10 mm in diameter and 15 mm in length were grafted with MCA combined with unprocessed marrow or with MS processed marrow that was enriched in HA(+) CTPs and depleted in red blood cells and nonprogenitors. Outcome was assessed at 4 weeks using quantitative 3D microcomputed tomography (micro-CT) analysis of bone formation and histomorphological assessment. RESULTS Histomorphological assessment showed a significant increase in new bone formation and in the vascular sinus area in the MS-processed defects. Robust bone formation was found throughout the defect area in both groups (defects grafted with unprocessed marrow or with MS processed marrow.) Percent bone volume in the defects, as assessed by micro-CT, was greater in defects engrafted with MS processed cells, but the difference was not statistically significant. CONCLUSION Rapid intraoperative MS processing to enrich CTPs based on HA as a surface marker can be used to increase the concentration and prevalence of CTPs. MCA grafts supplemented with heparinized bone marrow or MS processed cells resulted in a robust and advanced stage of bone regeneration at 4 weeks. A greater new bone formation and vascular sinus area was found in defects grafted with MS processed cells. These data suggest that MS processing may be used to enhance the performance of marrow-derived CTPs in clinical bone regeneration procedures. Further assessment in a more stringent bone defect model is proposed.
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Affiliation(s)
- Tonya Caralla
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
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Kozono D, Nitta M, Sampetrean O, Kimberly N, Kushwaha D, Merzon D, Ligon K, Zhu S, Zhu K, Kim TH, Kwon CH, Becher O, Saya H, Chen CC, Donovan LK, Birks SM, Bosak V, Pilkington GJ, Mao P, Li J, Joshi K, Hu B, Cheng S, Sobol RW, Nakano I, Li M, Hale JS, Myers JT, Huang AY, Gladson C, Sloan AA, Rich JN, Lathia JD, Hall PE, Li M, Gallagher J, Hale JS, Wu Q, Venere M, Levy E, Rani MS, Huang P, Bae E, Selfridge J, Cheng L, Guvenc H, McLendon RE, Nakano I, Sloan AE, Phillips H, Lai A, Gladson C, Bredel M, Bao S, Hjelmeland A, Lathia JD, Rich JN, Hale JS, Li M, Sinyuk M, Rich JN, Lathia JD, Lathia JD, Li M, Sathyan P, Hale J, Zinn P, Gallagher J, Wu Q, Carson CT, Naik U, Hjelmeland A, Majumder S, Rich JN, Venere M, Wu Q, Song LA, Vasanji A, Tenley N, Hjelmeland AB, Rich JN, Peruzzi P, Bronisz A, Antonio Chiocca E, Godlewski JA, Guryanova OA, Wu Q, Fang X, Rich JN, Bao S, Christel HMC, Benito C, Zoltan G, Aline B, Tilman S, Josephine B, Carolin M, Thomas S, Violaine G, Unterberg A, Capilla-Gonzalez V, Guerrero-Cazares H, Cebrian-Silla A, Garcia-Verdugo JM, Quinones-Hinojosa A, Man J, Shoemake J, Venere M, Rich J, Yu J, He X, DiMeco F, Vescovi AL, Heth JA, Muraszko KM, Fan X, Nguyen SA, Stechishin OD, Luchman HA, Kelly JJ, Cairncross JG, Weiss S, Kim Y, Kim E, Wu Q, Guryanova OO, Hitomi M, Lathia J, Serwanski D, Sloan AE, Robert J, Lee J, Nishiyama A, Bao S, Hjelmeland AB, Rich JN, Liu JK, Wu Q, Hjelmeland AB, Rich JN, Flavahan WA, Kim Y, Li M, Lathia J, Rich J, Hjelmeland A, Fernandez N, Wu M, Bredel M, Das S, Bazzoli E, Pulvirenti T, Oberstadt MC, Perna F, Boyoung W, Schultz N, Huse JT, Fomchenko EI, Voza F, Tabar V, Brennan CW, DeAngelis LM, Nimer SD, Holland EC, Squatrito M, Chen YH, Gutmann DH, Kim SH, Lee MK, Chwae YJ, Yoo BC, Kim KH, Soeda A, Hara A, Iwama T, Park DM, Golebiewska A, Bougnaud S, Stieber D, Brons NH, Vallar L, Hertel F, Bjerkvig R, Niclou SP, Hamerlik P, Lathia JD, Rasmussen R, Fricova D, Rich JN, Jiri B, Schulte A, Kathagen A, Zapf S, Meissner H, Phillips HS, Westphal M, Lamszus K, Sanzey M, Golebiewska A, Stieber D, Niclou SP, Singh SK, Vartanian A, Gumin J, Sulman EP, Lang FF, Zadeh G, Bayin NS, Dietrich A, Abel T, Chao MV, Song HR, Buchholz CJ, Placantonakis D, Esencay M, Zagzag D, Balyasnikova IV, Prasol MS, Ferguson SD, Ahmed AU, Han Y, Lesniak MS, Barish ME, Brown CE, Herrmann K, Argalian S, Gutova M, Tang Y, Annala A, Moats RA, Ghoda LY, Aboody KS, Hitomi M, Gallagher J, Gadani S, Li M, Adkins J, Vsanji A, Wu Q, Soeda A, McLendon R, Chenn A, Hjelmeland A, Park D, Lathia J, Rich J, Dictus C, Friauf S, Valous NA, Grabe N, Muerle B, Unterberg AW, Herold-Mende CC, Lee HK, Finniss S, Buchris E, Ziv-Av A, Casacu S, Xiang C, Bobbit K, Rempel SA, Mikkelsen T, Slavin S, Brodie C, Kim E, Woo DH, Oh Y, Kim M, Nam DH, Lee J, Li Q, Salas S, Pendleton C, Wijesekera O, Chesler D, Wang J, Smith C, Guerrero-Cazares H, Levchenko A, Quinones-Hinojosa A, LaPlant Q, Pitter K, Bleau AM, Helmy K, Werbeck J, Barrett L, Shimizu F, Benezra R, Tabar V, Holland E, Chu Q, Bar E, Orr B, Eberhart CG, Schmid RS, Bash RE, Werneke AM, White KK, Miller CR, Agasse F, Jhaveri N, Hofman FM, Chen TC, Natsume A, Wakabayashi T, Kondo Y, Woo DH, Kim E, Chang N, Nam DH, Lee J, Moon E, Kanai R, Yip S, Kimura A, Tanaka S, Rheinbay E, Cahill D, Curry W, Mohapatra G, Iafrate J, Chi A, Martuza R, Rabkin S, Wakimoto H, Cusulin C, Luchman HA, Weiss S, Gutova M, Frank JA, Annala AJ, Barish ME, Moats RA, Aboody KS. LAB-STEM CELLS. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos239] [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: 11/14/2022] Open
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Park YM, Drazba JA, Vasanji A, Egelhoff T, Febbraio M, Silverstein RL. Oxidized LDL/CD36 interaction induces loss of cell polarity and inhibits macrophage locomotion. Mol Biol Cell 2012; 23:3057-68. [PMID: 22718904 PMCID: PMC3418302 DOI: 10.1091/mbc.e11-12-1051] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 04/30/2012] [Accepted: 06/13/2012] [Indexed: 02/06/2023] Open
Abstract
Cell polarization is essential for migration and the exploratory function of leukocytes. However, the mechanism by which cells maintain polarity or how cells revert to the immobilized state by gaining cellular symmetry is not clear. Previously we showed that interaction between oxidized low-density lipoprotein (oxLDL) and CD36 inhibits macrophage migration; in the current study we tested the hypothesis that oxLDL/CD36-induced inhibition of migration is the result of intracellular signals that regulate cell polarity. Live cell imaging of macrophages showed that oxLDL actuated retraction of macrophage front end lamellipodia and induced loss of cell polarity. Cd36 null and macrophages null for Vav, a guanine nucleotide exchange factor (GEF), did not show this effect. These findings were caused by Rac-mediated inhibition of nonmuscle myosin II, a cell polarity determinant. OxLDL induced dephosphorylation of myosin regulatory light chain (MRLC) by increasing the activity of Rac. Six-thioguanine triphosphate (6-thio-GTP), which inhibits Vav-mediated activation of Rac, abrogated the effect of oxLDL. Activation of the Vav-Rac-myosin II pathway by oxidant stress may induce trapping of macrophages at sites of chronic inflammation such as atherosclerotic plaque.
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Affiliation(s)
- Young Mi Park
- Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195
| | - Judith A. Drazba
- Imaging Core, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Amit Vasanji
- Biomedical Imaging and Analysis Core, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Thomas Egelhoff
- Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195
| | - Maria Febbraio
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195
| | - Roy L. Silverstein
- Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195
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Kim J, Magno MHR, Waters H, Doll BA, McBride S, Alvarez P, Darr A, Vasanji A, Kohn J, Hollinger JO. Bone Regeneration in a Rabbit Critical-Sized Calvarial Model Using Tyrosine-Derived Polycarbonate Scaffolds. Tissue Eng Part A 2012; 18:1132-9. [DOI: 10.1089/ten.tea.2011.0582] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jinku Kim
- Department of Biomedical Engineering, Bone Tissue Engineering Center, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Maria Hanshella R. Magno
- Department of Chemistry and Chemical Biology and New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Heather Waters
- Head and Neck Institute, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Bruce A. Doll
- Department of Chemistry and Chemical Biology and New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Sean McBride
- Department of Biomedical Engineering, Bone Tissue Engineering Center, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Pedro Alvarez
- Department of Biomedical Engineering, Bone Tissue Engineering Center, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Aniq Darr
- Department of Chemistry and Chemical Biology and New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Amit Vasanji
- Biomedical Imaging and Analysis Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Joachim Kohn
- Department of Chemistry and Chemical Biology and New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Jeffrey O. Hollinger
- Department of Biomedical Engineering, Bone Tissue Engineering Center, Carnegie Mellon University, Pittsburgh, Pennsylvania
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Frolova EG, Sopko N, Blech L, Popović ZB, Li J, Vasanji A, Drumm C, Krukovets I, Jain MK, Penn MS, Plow EF, Stenina OI. Thrombospondin-4 regulates fibrosis and remodeling of the myocardium in response to pressure overload. FASEB J 2012; 26:2363-73. [PMID: 22362893 PMCID: PMC3360147 DOI: 10.1096/fj.11-190728] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 02/10/2012] [Indexed: 12/29/2022]
Abstract
Thrombospondin-4 (TSP-4) expression increases dramatically in hypertrophic and failing hearts in rodent models and in humans. The aim of this study was to address the function of TSP-4 in the heart. TSP-4-knockout (Thbs4(-/-)) and wild-type (WT) mice were subjected to transverse aortic constriction (TAC) to increase left ventricle load. After 2 wk, Thbs4(-/-) mice had a significantly higher heart weight/body weight ratio than WT mice. The additional increase in the heart weight in TAC Thbs4(-/-) mice was due to increased deposition of extracellular matrix (ECM). The levels of interstitial collagens were higher in the knockout mice, but the size of cardiomyocytes and apoptosis in the myocardium was unaffected by TSP-4 deficiency, suggesting that increased reactive fibrosis was the primary cause of the higher heart weight. The increased ECM deposition in Thbs4(-/-) mice was accompanied by changes in functional parameters of the heart and decreased vessel density. The expression of inflammatory and fibrotic genes known to be influential in myocardial remodeling changed as a result of TSP-4 deficiency in vivo and as a result of incubation of cells with recombinant TSP-4 in vitro. Thus, TSP-4 is involved in regulating the adaptive responses of the heart to pressure overload, suggesting its important role in myocardial remodeling. Our study showed a direct influence of TSP-4 on heart function and to identify the mechanism of its effects on heart remodeling.
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Affiliation(s)
- Ella G. Frolova
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | | | - Lauren Blech
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | | | - Jianbo Li
- Department of Quantitative Health Sciences
| | | | - Carla Drumm
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Irene Krukovets
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Mukesh K. Jain
- Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Edward F. Plow
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
| | - Olga I. Stenina
- Department of Molecular Cardiology
- Joseph J. Jacob Center for Thrombosis and Vascular Biology
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Baskin JZ, Vasanji A, McMasters J, Soenjaya Y, Barbu AM, Eppell SJ. Nanophase bone substitute in vivo response to subcutaneous implantation. J Biomed Mater Res A 2012; 100:2462-73. [PMID: 22573370 DOI: 10.1002/jbm.a.34175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 11/15/2011] [Accepted: 02/03/2012] [Indexed: 11/07/2022]
Abstract
A collagen-apatite composite designed as a load-bearing bone substitute implant is used to characterize the relationship between implant morphology and in vivo behavior. This nanophase bone substitute (NBS) is studied morphologically using a nondestructive imaging technique and biologically using the rodent subcutaneous model. Porosity and pore interconnectivity are correlated with histological outcomes showing cellular invasion occurs with average pore sizes below 100 μm. Crosslinking with D-ribose is shown to affect cellular infiltration in a dose-response manner. These data suggest that collagen-apatite bone substitutes can support cellular infiltration with pore size significantly smaller than 100 μm, an encouraging result regarding development of the NBS into a platform of biomaterials with enhanced mechanical properties. The data also indicate that increasing crosslinking density decreases cellular infiltration of NBS. Thus, modulating mechanical properties of the material by altering crosslink density is likely to produce decreased biological response within the material.
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Affiliation(s)
- Jonathan Z Baskin
- Department of Otolaryngology-Head and Neck Surgery and Facial Plastic and Reconstructive Surgery, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA..
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Joshi K, Gupta S, Mazumder S, Okemoto Y, Angenieux B, Kornblum H, Nakano I, Synowitz M, Kumar J, Petrosino S, Imperatore R, Smith E, Wendt P, Erdmann B, Nuber U, Nuber U, Matiash V, Chirasani S, Cristino L, DiMarzo V, Kettenmann H, Glass R, Soroceanu L, Matlaf L, Cobbs C, Kim YW, Kim SH, Kwon C, Han DY, Kim EH, Chang JH, Liu JL, Kim YH, Kim S, Long PM, Viapiano MS, Jaworski DM, Kanemura Y, Shofuda T, Kanematsu D, Matsumoto Y, Yamamoto A, Nonaka M, Moriuchi S, Nakajima S, Suemizu H, Nakamura M, Okada Y, Okano H, Yamasaki M, Price RL, Song J, Bingmer K, Zimmerman P, Rivera A, Yi JY, Cook C, Chiocca EA, Kwon CH, Kang SG, Shin HD, Mok HS, Park NR, Sim JK, Shin HJ, Park YK, Jeun SS, Hong YK, Lang FF, McKenzie BA, Zemp FJ, Lun X, Narendran A, McFadden G, Kurz E, Forsyth P, Talsma CE, Flack CG, Zhu T, He X, Soules M, Heth JA, Muraszko K, Fan X, Chen L, Guerrero-Cazares H, Noiman L, Smith C, Beltran N, Levchenko A, Quinones-Hinojosa A, Peruzzi P, Godlewski J, Lawler SE, Chiocca EA, Sarkar S, Doring A, Lun X, Wang X, Kelly J, Hader W, Dunn JF, Kinniburgh D, Robbins S, Forsyth P, Cairncross G, Weiss S, Yong VW, Vollmann-Zwerenz A, Velez-Char N, Jachnik B, Ramm P, Leukel P, Bogdahn U, Hau P, Kim SH, Lee MK, Chwae YJ, Yoo BC, Kim KH, Kristoffersen K, Stockhausen MT, Poulsen HS, Kaluzova M, Machaidze R, Wankhede M, Hadjipanayis CG, Romane AM, Sim FJ, Wang S, Chandler-Militello D, Li X, Al Fanek Y, Walter K, Johnson M, Achanta P, Quinones-Hinojosa A, Goldman SA, Shinojima N, Hossain A, Takezaki T, Gumin J, Gao F, Nwajei F, Cheung V, Figueroa J, Lang FF, Pellegatta S, Orzan F, Anghileri E, Guzzetti S, Porrati P, Eoli M, Finocchiaro G, Fu J, Koul D, Wang S, Yao J, Gumin JG, Sulman E, Lang F, Aldape KK, Colman H, Yung AW, Koul D, Fu J, Yao J, Wang S, Gumin J, Sulman E, Lang F, Aldape K, Colman H, Yung AW, Alonso MM, Manterola L, urquiza L, Cortes-Santiago N, Diez-Valle R, Tejada-Solis S, Garcia-foncillas J, Fueyo J, Gomez-Manzano C, Nguyen S, Stechishin O, Luchman A, Weiss S, Lathia JD, Gallagher J, Li M, Myers J, Hjelmeland A, Huang A, Rich J, Bhat K, Vaillant B, Balasubramaniyan V, Ezhilarasan R, Sulman E, Colman H, Aldape K, Lathia JD, Hitomi M, Gallagher J, Gadani S, Li M, Adkins J, Vasanji A, Wu Q, Soeda A, McLendon R, Chenn A, Hjelmeland A, Park D, Rich J, Yao J, Fu J, Koul D, Weinstein JN, Alfred Yung WK, Zagzag D, Esencay M, Klopsis D, Liu M, Narayana A, Parker E, Golfinos J, Clark PA, Kandela IK, Weichert JP, Kuo JS, Fouse SD, Nagarajan RP, Nakamura J, James CD, Chang S, Costello JF, Gong X, Kankar G, Di K, Reeves A, Linskey M, Bota DA, Schmid RS, Bash RE, Vitucci M, Werneke AM, Miller CR, Kim E, Kim M, Kim K, Lee J, Du F, Li P, Wechsler-Reya R, Yang ZJ. STEM CELLS. Neuro Oncol 2011. [DOI: 10.1093/neuonc/nor163] [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: 11/13/2022] Open
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Hattori N, Carrino DA, Lauer ME, Vasanji A, Wylie JD, Nelson CM, Apte SS. Pericellular versican regulates the fibroblast-myofibroblast transition: a role for ADAMTS5 protease-mediated proteolysis. J Biol Chem 2011; 286:34298-310. [PMID: 21828051 PMCID: PMC3190794 DOI: 10.1074/jbc.m111.254938] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [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: 04/28/2011] [Revised: 07/22/2011] [Indexed: 11/06/2022] Open
Abstract
The cell and its glycosaminoglycan-rich pericellular matrix (PCM) comprise a functional unit. Because modification of PCM influences cell behavior, we investigated molecular mechanisms that regulate PCM volume and composition. In fibroblasts and other cells, aggregates of hyaluronan and versican are found in the PCM. Dermal fibroblasts from Adamts5(-/-) mice, which lack a versican-degrading protease, ADAMTS5, had reduced versican proteolysis, increased PCM, altered cell shape, enhanced α-smooth muscle actin (SMA) expression and increased contractility within three-dimensional collagen gels. The myofibroblast-like phenotype was associated with activation of TGFβ signaling. We tested the hypothesis that fibroblast-myofibroblast transition in Adamts5(-/-) cells resulted from versican accumulation in PCM. First, we noted that versican overexpression in human dermal fibroblasts led to increased SMA expression, enhanced contractility, and increased Smad2 phosphorylation. In contrast, dermal fibroblasts from Vcan haploinsufficient (Vcan(hdf/+)) mice had reduced contractility relative to wild type fibroblasts. Using a genetic approach to directly test if myofibroblast transition in Adamts5(-/-) cells resulted from increased PCM versican content, we generated Adamts5(-/-);Vcan(hdf/+) mice and isolated their dermal fibroblasts for comparison with dermal fibroblasts from Adamts5(-/-) mice. In Adamts5(-/-) fibroblasts, Vcan haploinsufficiency or exogenous ADAMTS5 restored normal fibroblast contractility. These findings demonstrate that altering PCM versican content through proteolytic activity of ADAMTS5 profoundly influenced the dermal fibroblast phenotype and may regulate a phenotypic continuum between the fibroblast and its alter ego, the myofibroblast. We propose that a physiological function of ADAMTS5 in dermal fibroblasts is to maintain optimal versican content and PCM volume by continually trimming versican in hyaluronan-versican aggregates.
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Affiliation(s)
- Noriko Hattori
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
| | - David A. Carrino
- the Skeletal Research Center, Department of Biology, Case Western Reserve University, Cleveland, Ohio 44195
| | - Mark E. Lauer
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
| | - Amit Vasanji
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
| | - James D. Wylie
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
| | - Courtney M. Nelson
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
| | - Suneel S. Apte
- From the Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic and
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Lathia JD, Gallagher J, Myers JT, Li M, Vasanji A, McLendon RE, Hjelmeland AB, Huang AY, Rich JN. Direct in vivo evidence for tumor propagation by glioblastoma cancer stem cells. PLoS One 2011; 6:e24807. [PMID: 21961046 PMCID: PMC3178553 DOI: 10.1371/journal.pone.0024807] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 08/22/2011] [Indexed: 12/11/2022] Open
Abstract
High-grade gliomas (World Health Organization grade III anaplastic astrocytoma and grade IV glioblastoma multiforme), the most prevalent primary malignant brain tumors, display a cellular hierarchy with self-renewing, tumorigenic cancer stem cells (CSCs) at the apex. While the CSC hypothesis has been an attractive model to describe many aspects of tumor behavior, it remains controversial due to unresolved issues including the use of ex vivo analyses with differential growth conditions. A CSC population has been confirmed in malignant gliomas by preferential tumor formation from cells directly isolated from patient biopsy specimens. However, direct comparison of multiple tumor cell populations with analysis of the resulting phenotypes of each population within a representative tumor environment has not been clearly described. To directly test the relative tumorigenic potential of CSCs and non-stem tumor cells in the same microenvironment, we interrogated matched tumor populations purified from a primary human tumor transplanted into a xenograft mouse model and monitored competitive in vivo tumor growth studies using serial in vivo intravital microscopy. While CSCs were a small minority of the initial transplanted cancer cell population, the CSCs, not the non-stem tumor cells, drove tumor formation and yielded tumors displaying a cellular hierarchy. In the resulting tumors, a fraction of the initial transplanted CSCs maintained expression of stem cell and proliferation markers, which were significantly higher compared to the non-stem tumor cell population and demonstrated that CSCs generated cellular heterogeneity within the tumor. These head-to-head comparisons between matched CSCs and non-stem tumor cells provide the first functional evidence using live imaging that in the same microenvironment, CSCs more than non-stem tumor cells are responsible for tumor propagation, confirming the functional definition of a CSC.
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Affiliation(s)
- Justin D. Lathia
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- * E-mail: (JDL); (JNR)
| | - Joseph Gallagher
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Jay T. Myers
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Meizhang Li
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Amit Vasanji
- Image Processing Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Roger E. McLendon
- Department of Pathology, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Anita B. Hjelmeland
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Molecular Medicine Program, Cleveland Clinic Lerner College of Medicine at Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Alex Y. Huang
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Jeremy N. Rich
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Molecular Medicine Program, Cleveland Clinic Lerner College of Medicine at Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
- * E-mail: (JDL); (JNR)
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Ebrahem Q, Qi JH, Sugimoto M, Ali M, Sears JE, Cutler A, Khokha R, Vasanji A, Anand-Apte B. Increased neovascularization in mice lacking tissue inhibitor of metalloproteinases-3. Invest Ophthalmol Vis Sci 2011; 52:6117-23. [PMID: 21282576 DOI: 10.1167/iovs.10-5899] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Tissue inhibitor of metalloproteinases-3 (TIMP-3) is a matrix-bound inhibitor of matrix metalloproteinases (MMPs). The authors have previously determined a novel function of TIMP-3 to inhibit vascular endothelial growth factor (VEGF)-mediated angiogenesis. Here, the authors examined the in vivo angiogenic phenotype of ocular vessels in mice deficient in TIMP-3. METHODS VEGF-mediated corneal neovascularization and laser-induced choroidal neovascularization (CNV) were examined in TIMP-3-null mice. The effects of the absence of TIMP-3 on the phosphorylation status of the VEGF-receptor-2 (VEGFR-2) and the downstream signaling pathways were evaluated biochemically. In addition, the activation state of MMPs in the retina of TIMP-3-deficient mice was examined by in situ zymography. RESULTS The results of these studies determine an accentuation of pathologic VEGF-mediated angiogenesis in the cornea and laser-induced CNV in mice lacking TIMP-3. In the absence of the MMP inhibitor, pathophysiological changes were observed in the choroidal vasculature concomitantly with an increase in gelatinolytic activity. These results suggest that an imbalance of extracellular matrix homeostasis, together with a loss of an angiogenesis inhibitor, can prime vascular beds to be more responsive to an angiogenic stimulus. CONCLUSIONS In light of the recent studies suggesting that genetic variants near TIMP-3 influence susceptibility to age-related macular degeneration, these results imply that TIMP-3 may regulate the development of the choroidal vasculature and is a likely contributor to increased susceptibility to choroidal neovascularization.
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Affiliation(s)
- Quteba Ebrahem
- Department of Ophthalmology, Cole Eye Institute, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio 44195, USA
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Shinohara K, Greenfield S, Pan H, Vasanji A, Kumagai K, Midura RJ, Kiedrowski M, Penn MS, Muschler GF. Stromal cell-derived factor-1 and monocyte chemotactic protein-3 improve recruitment of osteogenic cells into sites of musculoskeletal repair. J Orthop Res 2011; 29:1064-9. [PMID: 21567452 DOI: 10.1002/jor.21374] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 01/10/2011] [Indexed: 02/04/2023]
Abstract
Homing of osteogenic cells through the systemic circulation represents an alternative to traditional orthopedic tissue engineering approaches that focus on local cell populations. We hypothesize that expression of the chemokine, stromal cell-derived factor-1 (SDF-1) or monocyte chemotactic protein-3 (MCP-3) may enhance homing of osteogenic cells into sites of fracture repair, as both have demonstrated promise in recruitment of marrow stromal cells (MSCs). This hypothesis was tested by transplantation of culture expanded MSCs expressing these factors adjacent to a fracture site on a collagen scaffold. One green fluorescent protein positive (GFP+) and one wild-type mouse were surgically conjoined as parabiots at 7-8 weeks of age. Fibular osteotomy was performed 4 weeks after parabiosis on the hind limb of the wild-type mouse. Mice were randomly allocated to receive one of the following five treatments: control (no scaffold), empty scaffold (no cells), or scaffold containing MSCs, scaffold containing MSCs expressing SDF-1, or scaffold containing MSCs expressing MCP-3. Fracture callus was harvested 2 weeks after injury, and analyzed with confocal microscopy and cell-counting software. When compared to fracture callus treated with nontransfected MSCs, the fracture callus of mice treated with both SDF-1 and MCP-3 secreting MSCs demonstrated a significant increase in the number of both GFP+ cells (p = 0.0003, p = 0.02) and GFP+ /AP+ cells (p = 0.0005, p = 0.01). These data suggest that homing of osteogenic cells from systemic circulation participate in fracture repair and that homing pathways might be modulated to enhance the contribution of circulating progenitors at the site of skeletal injury.
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Affiliation(s)
- Kentaro Shinohara
- Orthopaedic Research Center, Cleveland Clinic, Department of Biomedical Engineering, Cleveland, Ohio 44195, USA
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Fan W, Tang Z, Yin L, Morrison B, Hafez-Khayyata S, Fu P, Huang H, Bagai R, Jiang S, Kresak A, Howell S, Vasanji A, Flask CA, Halmos B, Koon H, Ma PC. MET-independent lung cancer cells evading EGFR kinase inhibitors are therapeutically susceptible to BH3 mimetic agents. Cancer Res 2011; 71:4494-505. [PMID: 21555370 DOI: 10.1158/0008-5472.can-10-2668] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Targeted therapies for cancer are inherently limited by the inevitable recurrence of resistant disease after initial responses. To define early molecular changes within residual tumor cells that persist after treatment, we analyzed drug-sensitive lung adenocarcinoma cell lines exposed to reversible or irreversible epidermal growth factor receptor (EGFR) inhibitors, alone or in combination with MET-kinase inhibitors, to characterize the adaptive response that engenders drug resistance. Tumor cells displaying early resistance exhibited dependence on MET-independent activation of BCL-2/BCL-XL survival signaling. Further, such cells displayed a quiescence-like state associated with greatly retarded cell proliferation and cytoskeletal functions that were readily reversed after withdrawal of targeted inhibitors. Findings were validated in a xenograft model, showing BCL-2 induction and p-STAT3[Y705] activation within the residual tumor cells surviving the initial antitumor response to targeted therapies. Disrupting the mitochondrial BCL-2/BCL-XL antiapoptotic machinery in early survivor cells using BCL-2 Homology Domain 3 (BH3) mimetic agents such as ABT-737, or by dual RNAi-mediated knockdown of BCL-2/BCL-XL, was sufficient to eradicate the early-resistant lung-tumor-cells evading targeted inhibitors. Similarly, in a xenograft model the preemptive cotreatment of lung tumor cells with an EGFR inhibitor and a BH3 mimetic eradicated early TKI-resistant evaders and ultimately achieved a more durable response with prolonged remission. Our findings prompt prospective clinical investigations using BH3-mimetics combined with targeted receptor kinase inhibitors to optimize and improve clinical outcomes in lung-cancer treatment.
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Affiliation(s)
- Weiwen Fan
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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Wu C, Agrawal S, Vasanji A, Drazba J, Sarkaria S, Xie J, Welch CM, Liu M, Anand-Apte B, Horowitz A. Rab13-dependent trafficking of RhoA is required for directional migration and angiogenesis. J Biol Chem 2011; 286:23511-20. [PMID: 21543326 DOI: 10.1074/jbc.m111.245209] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Angiogenesis requires concomitant remodeling of cell junctions and migration, as exemplified by recent observations of extensive endothelial cell movement along growing blood vessels. We report that a protein complex that regulates cell junctions is required for VEGF-driven directional migration and for angiogenesis in vivo. The complex consists of RhoA and Syx, a RhoA guanine exchange factor cross-linked by the Crumbs polarity protein Mupp1 to angiomotin, a phosphatidylinositol-binding protein. The Syx-associated complex translocates to the leading edge of migrating cells by membrane trafficking that requires the tight junction recycling GTPase Rab13. In turn, Rab13 associates with Grb2, targeting Syx and RhoA to Tyr(1175)-phosphorylated VEGFR2 at the leading edge. Rab13 knockdown in zebrafish impeded sprouting of intersegmental vessels and diminished the directionality of their tip cells. These results indicate that endothelial cell mobility in sprouting vessels is facilitated by shuttling the same protein complex from disassembling junctions to the leading edges of cells.
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Affiliation(s)
- Chuanshen Wu
- Department of Molecular Cardiology, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio 44195, USA
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