1
|
Kovács KD, Szittner Z, Magyaródi B, Péter B, Szabó B, Vörös A, Kanyó N, Székács I, Horvath R. Optical sensor reveals the hidden influence of cell dissociation on adhesion measurements. Sci Rep 2024; 14:11719. [PMID: 38778185 PMCID: PMC11111754 DOI: 10.1038/s41598-024-61485-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Cell adhesion experiments are important in tissue engineering and for testing new biologically active surfaces, prostheses, and medical devices. Additionally, the initial state of adhesion (referred to as nascent adhesion) plays a key role and is currently being intensively researched. A critical step in handling all adherent cell types is their dissociation from their substrates for further processing. Various cell dissociation methods and reagents are used in most tissue culture laboratories (here, cell dissociation from the culture surface, cell harvesting, and cell detachment are used interchangeably). Typically, the dissociated cells are re-adhered for specific measurements or applications. However, the impact of the choice of dissociation method on cell adhesion in subsequent measurements, especially when comparing the adhesivity of various surfaces, is not well clarified. In this study, we demonstrate that the application of a label-free optical sensor can precisely quantify the effect of cell dissociation methods on cell adhesivity, both at the single-cell and population levels. The optical measurements allow for high-resolution monitoring of cellular adhesion without interfering with the physiological state of the cells. We found that the choice of reagent significantly alters cell adhesion on various surfaces. Our results clearly demonstrate that biological conclusions about cellular adhesion when comparing various surfaces are highly dependent on the employed dissociation method. Neglecting the choice of cellular dissociation can lead to misleading conclusions when evaluating cell adhesion data from various sources and comparing the adhesivity of two different surfaces (i.e., determining which surface is more or less adhesive).
Collapse
Affiliation(s)
- Kinga Dóra Kovács
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
- Department of Biological Physics, ELTE Eötvös University, Budapest, Hungary
| | - Zoltán Szittner
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
| | - Beatrix Magyaródi
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
- Chemical Engineering and Material Sciences Doctoral School, University of Pannonia, Veszprém, Hungary
| | - Beatrix Péter
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
| | - Bálint Szabó
- Department of Biological Physics, ELTE Eötvös University, Budapest, Hungary
- Cellsorter Kft., Budapest, Hungary
| | - Alexa Vörös
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
| | - Nicolett Kanyó
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
| | - Inna Székács
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary
| | - Robert Horvath
- Nanobiosensorics Laboratory, MFA, Centre for Energy Research, HUN-REN, Budapest, Hungary.
| |
Collapse
|
2
|
Cheng Y, Ren L, Niyazi A, Sheng L, Zhao Y. Identification of potential immunologic resilience in the healing process of diabetic foot ulcers. Int Wound J 2023; 21:e14465. [PMID: 37926487 PMCID: PMC10898407 DOI: 10.1111/iwj.14465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 10/15/2023] [Indexed: 11/07/2023] Open
Abstract
Diabetic foot ulcers (DFUs) are one of the most common and challenging complications of diabetes, yet our understanding of their pathogenesis remains limited. We collected gene expression data of DFU patients from public databases. Bioinformatics tools were applied for systematic analysis, including the identification of differentially expressed genes (DEGs), weighted gene co-expression network analysis (WGCNA) and enrichment analysis. We further used single-cell RNA sequencing to identify the distribution of different cell populations in DFU. Finally, key results were validated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and flow cytometry. We identified 217 DEGs between ulcerated and healthy skin, and 37 DEGs between healing ulcers and ulcers. WGCNA revealed that the cyan module had the highest positive correlation with healthy skin and negative correlation with ulcers. The black module had the highest negative correlation with healthy skin and positive correlation with ulcers. Enrichment analysis showed that the genes in the cyan module were mainly associated with complement and coagulation cascades, while the genes in the black module were mainly associated with the IL-17 signalling pathway. In addition, CD8 T cells were significantly lower in ulcers than in healthy and healing ulcers. By comparing marker genes of CD8 T cells, we identified key genes in the cyan and black modules and validated their expression using RT-qPCR. The proportion of CD8 T cells was increased in healing ulcers. Flow cytometry detected increased levels of CD8 T, B and natural killer cells in healing ulcers. CD8 T cells and related key genes play an important role in the healing process of DFU. The results of this study provide a new perspective for understanding the pathogenesis and treatment of DFU.
Collapse
Affiliation(s)
- Yifeng Cheng
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Lei Ren
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Aihemaitijiang Niyazi
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Li Sheng
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Yang Zhao
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| |
Collapse
|
3
|
Kanta J, Zavadakova A, Sticova E, Dubsky M. Fibronectin in hyperglycaemia and its potential use in the treatment of diabetic foot ulcers: A review. Int Wound J 2022; 20:1750-1761. [PMID: 36537075 PMCID: PMC10088845 DOI: 10.1111/iwj.13997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/20/2022] [Accepted: 10/20/2022] [Indexed: 12/24/2022] Open
Abstract
Metabolism of fibronectin, the protein that plays a key role in the healing of wounds, is changed in the patients with diabetes mellitus. Fibronectin can interact with other proteins and proteoglycans and organise them to form the extracellular matrix, the basis of the granulation tissue in healing wounds. However, diabetic foot ulcers (DFUs) suffer from inadequate deposition of this protein. Degradation prevails over fibronectin synthesis in the proteolytic inflammatory environment in the ulcers. Because of the lack of fibronectin in the wound bed, the assembly of the extracellular matrix and the deposition of the granulation tissue cannot be started. A number of methods have been designed that prevents fibronectin degradation, replace lacking fibronectin or support its formation in non-healing wounds in animal models of diabetes. The aim of this article is to review the metabolism of fibronectin in DFUs and to emphasise that it would be useful to pay more attention to fibronectin matrix assembly in the ulcers when laboratory methods are translated to clinical practice.
Collapse
Affiliation(s)
- Jiri Kanta
- Faculty of Medicine Charles University Hradec Kralove Czech Republic
| | - Anna Zavadakova
- Biomedical Center, Faculty of Medicine Charles University Pilsen Czech Republic
| | - Eva Sticova
- Diabetes Center Institute for Clinical and Experimental Medicine Prague Czech Republic
- Third Faculty of Medicine Charles University Prague Czech Republic
| | - Michal Dubsky
- Diabetes Center Institute for Clinical and Experimental Medicine Prague Czech Republic
- First Faculty of Medicine Charles University Prague Czech Republic
| |
Collapse
|
4
|
Fibronectin in development and wound healing. Adv Drug Deliv Rev 2021; 170:353-368. [PMID: 32961203 DOI: 10.1016/j.addr.2020.09.005] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/26/2020] [Accepted: 09/15/2020] [Indexed: 01/15/2023]
Abstract
Fibronectin structure and composition regulate contextual cell signaling. Recent advances have been made in understanding fibronectin and its role in tissue organization and repair. This review outlines fibronectin splice variants and their functions, evaluates potential therapeutic strategies targeting or utilizing fibronectin, and concludes by discussing potential future directions to modulate fibronectin function in development and wound healing.
Collapse
|
5
|
de Castro Brás LE, Frangogiannis NG. Extracellular matrix-derived peptides in tissue remodeling and fibrosis. Matrix Biol 2020; 91-92:176-187. [PMID: 32438055 DOI: 10.1016/j.matbio.2020.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/26/2022]
Abstract
Alterations in the composition of the extracellular matrix (ECM) critically regulate the cellular responses in tissue repair, remodeling, and fibrosis. After injury, proteolytic degradation of ECM generates bioactive ECM fragments, named matricryptins, exposing cryptic sites with actions distinct from the parent molecule. Matricryptins contribute to the regulation of inflammatory, reparative, and fibrogenic cascades through effects on several different cell types both in acute and chronic settings. Fibroblasts play a major role in matricryptin generation not only as the main cellular source of ECM proteins, but also as producers of matrix-degrading proteases. Moreover, several matricryptins exert fibrogenic or reparative actions by modulating fibroblast phenotype and function. This review manuscript focuses on the mechanisms of matricyptin generation in injured and remodeling tissues with an emphasis on fibroblast-matricryptin interactions.
Collapse
Affiliation(s)
- Lisandra E de Castro Brás
- The Brody School of Medicine, East Carolina University, Department of Physiology, Greenville 27858 North Carolina.
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, New York
| |
Collapse
|
6
|
Dayem AA, Won J, Goo HG, Yang GM, Seo DS, Jeon BM, Choi HY, Park SE, Lim KM, Jang SH, Lee SB, Choi SB, Kim K, Kang GH, Yeon GB, Kim DS, Cho SG. The immobilization of fibronectin- and fibroblast growth factor 2-derived peptides on a culture plate supports the attachment and proliferation of human pluripotent stem cells. Stem Cell Res 2020; 43:101700. [PMID: 31981882 DOI: 10.1016/j.scr.2020.101700] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 12/18/2022] Open
Abstract
Pluripotent stem cells (PSCs) offer a promising tool for regenerative medicine. The clinical application of PSCs inevitably requires a large-scale culture in a highly defined environment. The present study aimed to devise defined coating materials for the efficient adhesion and proliferation of human PSCs (hPSCs). We tested the activity of seven fibronectin-derived peptides and three laminin-derived peptides for the attachment and proliferation of hPSCs through their immobilization on the bottom of culture dishes by creating a fusion protein with the mussel adhesion protein. Among the extracellular matrix (ECM) mimetics tested, one fibronectin-derived peptide, PHSRN-GRGDSP, significantly promoted adhesion, enhanced alkaline phosphatase activity, and increased pluripotency-related gene expression in hPSCs compared to Matrigel. Furthermore, co-immobilization of a particular canofin peptide derived from fibroblast growth factor 2 increased pluripotency marker expression, which may offer the possibility of culture without growth factor supplementation. Our findings afford a novel defined condition for the efficient culture of hPSCs and may be utilized in future clinical applications.
Collapse
Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jihye Won
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; AMOGREENTECH, 91, Gimpo-daero 1950 beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Hui-Gwan Goo
- AMOGREENTECH, 91, Gimpo-daero 1950 beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Gwang-Mo Yang
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Dong Sik Seo
- AMOGREENTECH, 91, Gimpo-daero 1950 beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Byeong-Min Jeon
- Department of Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hye Yeon Choi
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sang Eun Park
- AMOGREENTECH, 91, Gimpo-daero 1950 beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Kyung Min Lim
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Seon-Ho Jang
- AMOGREENTECH, 91, Gimpo-daero 1950 beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Soo Bin Lee
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sang Baek Choi
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Kyeongseok Kim
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Geun-Ho Kang
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Gyu-Bum Yeon
- Department of Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Dae-Sung Kim
- Department of Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea; Department of Pediatrics, Korea University College of Medicine, Guro Hospital, 97 Gurodong-gil, Guro-gu, Seoul 08308, Republic of Korea.
| | - Ssang-Goo Cho
- Department of Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model and Stem Cell Institute (IDASI), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
| |
Collapse
|
7
|
Cai H, Ao Z, Wu Z, Nunez A, Jiang L, Carpenter RL, Nephew KP, Guo F. Profiling Cell–Matrix Adhesion Using Digitalized Acoustic Streaming. Anal Chem 2019; 92:2283-2290. [DOI: 10.1021/acs.analchem.9b05065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hongwei Cai
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
| | - Zheng Ao
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
| | - Zhuhao Wu
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
| | - Asael Nunez
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
| | - Lei Jiang
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
| | - Richard L. Carpenter
- Medical Sciences Program, Indiana University School of Medicine, Bloomington, Indiana 47405, United States
- Melvin and Bren Simon Cancer Center, Indianapolis, Indiana 46202, United States
| | - Kenneth P. Nephew
- Medical Sciences Program, Indiana University School of Medicine, Bloomington, Indiana 47405, United States
- Melvin and Bren Simon Cancer Center, Indianapolis, Indiana 46202, United States
| | - Feng Guo
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana 47405, United States
- Melvin and Bren Simon Cancer Center, Indianapolis, Indiana 46202, United States
| |
Collapse
|
8
|
Cruz-Acuña R, Mulero-Russe A, Clark AY, Zent R, García AJ. Identification of matrix physicochemical properties required for renal epithelial cell tubulogenesis by using synthetic hydrogels. J Cell Sci 2019; 132:jcs.226639. [PMID: 31558679 DOI: 10.1242/jcs.226639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 09/15/2019] [Indexed: 11/20/2022] Open
Abstract
Synthetic hydrogels with controlled physicochemical matrix properties serve as powerful in vitro tools to dissect cell-extracellular matrix (ECM) interactions that regulate epithelial morphogenesis in 3D microenvironments. In addition, these fully defined matrices overcome the lot-to-lot variability of naturally derived materials and have provided insights into the formation of rudimentary epithelial organs. Therefore, we engineered a fully defined synthetic hydrogel with independent control over proteolytic degradation, mechanical properties, and adhesive ligand type and density to study the impact of ECM properties on epithelial tubulogenesis for inner medullary collecting duct (IMCD) cells. Protease sensitivity of the synthetic material for membrane-type matrix metalloproteinase-1 (MT1-MMP, also known as MMP14) was required for tubulogenesis. Additionally, a defined range of matrix elasticity and presentation of RGD adhesive peptide at a threshold level of 2 mM ligand density were required for epithelial tubulogenesis. Finally, we demonstrated that the engineered hydrogel supported organization of epithelial tubules with a lumen and secreted laminin. This synthetic hydrogel serves as a platform that supports epithelial tubular morphogenetic programs and can be tuned to identify ECM biophysical and biochemical properties required for epithelial tubulogenesis.
Collapse
Affiliation(s)
- Ricardo Cruz-Acuña
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.,Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Adriana Mulero-Russe
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.,School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Amy Y Clark
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.,George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Roy Zent
- Department of Medicine, Vanderbilt University, Nashville, TN 37235, USA
| | - Andrés J García
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA .,George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| |
Collapse
|
9
|
Wu CC, Wang LC, Su YT, Wei WY, Tsai KJ. Synthetic α5β1 integrin ligand PHSRN is proangiogenic and neuroprotective in cerebral ischemic stroke. Biomaterials 2018; 185:142-154. [PMID: 30243150 DOI: 10.1016/j.biomaterials.2018.09.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/02/2018] [Accepted: 09/09/2018] [Indexed: 12/29/2022]
Abstract
Ischemic stroke is the leading cause of disability and death worldwide. An effective therapeutic approach is urgently needed. Stroke-induced angiogenesis and neurogenesis are essential mechanisms in the long-term repair. Extracellular matrix proteins are also involved in tissue self-repair. Recently, a PHSRN (Pro-His-Ser-Arg-Asn) peptide from the fibronectin synergistic motif that can promote wound healing in epithelia and induce endothelial proliferation and cancer cell migration was identified. The therapeutic potential of this peptide in stroke is unknown. Here, we examined the potential of PHSRN in stroke therapy using an ischemic rat model of middle cerebral artery occlusion (MCAO). PHSRN reduced the infarct volume in MCAO rats, improved neurological function, and alleviated motor function impairment. PHSRN targeted the damaged brain region and distributed to endothelial cells after intraperitoneal injection. PHSRN significantly promoted angiogenesis and vascular endothelial growth factor secretion through activation of integrin α5β1 and its downstream intracellular signals, e.g., focal adhesion kinase, Ras, cRaf, and extracellular-signal-regulated kinase. PHSRN treatment also stimulated neurogenesis in MCAO rats, and maintained neuronal survival and neuronal morphologic complexity via induction of VEGF secretion. Together, these results provide insights into the role of integrin α5β1 following ischemia and support the feasibility of using PHSRN peptide in stroke therapy.
Collapse
Affiliation(s)
- Cheng-Chun Wu
- Institute of Basic Medical Science, National Cheng Kung University, Tainan, Taiwan; Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Liang-Chao Wang
- Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan; Division of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Tin Su
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taiwan
| | - Wei-Yen Wei
- Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuen-Jer Tsai
- Institute of Basic Medical Science, National Cheng Kung University, Tainan, Taiwan; Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan; Research Center of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| |
Collapse
|
10
|
Potent laminin-inspired antioxidant regenerative dressing accelerates wound healing in diabetes. Proc Natl Acad Sci U S A 2018; 115:6816-6821. [PMID: 29891655 DOI: 10.1073/pnas.1804262115] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The successful treatment of chronic dermal wounds, such as diabetic foot ulcers (DFU), depends on the development of safe, effective, and affordable regenerative tools that the surgeon can rely on to promote wound closure. Although promising, strategies that involve cell-based therapies and the local release of exogenous growth factors are costly, require very long development times, and result in modest improvements in patient outcome. We describe the development of an antioxidant shape-conforming regenerative wound dressing that uses the laminin-derived dodecapeptide A5G81 as a potent tethered cell adhesion-, proliferation-, and haptokinesis-inducing ligand to locally promote wound closure. A5G81 immobilized within a thermoresponsive citrate-based hydrogel facilitates integrin-mediated spreading, migration, and proliferation of dermal and epidermal cells, resulting in faster tissue regeneration in diabetic wounds. This peptide-hydrogel system represents a paradigm shift in dermoconductive and dermoinductive strategies for treating DFU without the need for soluble biological or pharmacological factors.
Collapse
|
11
|
Promotion of Corneal Epithelial Wound Healing in Diabetic Rats by the Fibronectin-Derived Peptide PHSRN. Cornea 2018; 36:1544-1548. [PMID: 28834817 DOI: 10.1097/ico.0000000000001344] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE Topical application of the fibronectin-derived peptide PHSRN facilitates corneal epithelial wound healing in healthy animals and in patients with nonhealing epithelial defects. We have now examined the effect of PHSRN eye drops on the healing of corneal epithelial wounds in diabetic rats. METHODS Wistar rats were injected intraperitoneally with streptozotocin to induce diabetes or with a vehicle as a control. Four weeks after confirmation of the corresponding presence or absence of glycosuria, a 3-mm-diameter portion of the corneal epithelium of the right eye was excised and eye drops containing PHSRN (200 μM) or phosphate-buffered saline (PBS) vehicle were administered to the injured eye every 6 hours. RESULTS The area of the epithelial defect did not differ significantly among the 4 experimental groups (diabetic or nondiabetic rats treated with PHSRN or vehicle) at 12 hours after wounding. At 18 hours, however, the area of the defect in diabetic rats treated with PHSRN (0.50 ± 0.34 mm) was significantly (P < 0.05) smaller than that in diabetic rats treated with PBS (1.06 ± 0.42 mm) and was similar to that in nondiabetic rats treated with PBS (0.60 ± 0.23 mm). The decrease in the size of the epithelial defect in diabetic rats treated with PHSRN was also found to be dependent on the dose of the peptide. CONCLUSIONS Administration of PHSRN significantly facilitated healing of corneal epithelial wounds in diabetic rats, which suggests that PHSRN eye drops warrant further investigation as a treatment option for patients with diabetic keratopathy.
Collapse
|
12
|
Moon PG, Lee JE, Cho YE, Lee SJ, Chae YS, Jung JH, Kim IS, Park HY, Baek MC. Fibronectin on circulating extracellular vesicles as a liquid biopsy to detect breast cancer. Oncotarget 2018; 7:40189-40199. [PMID: 27250024 PMCID: PMC5130002 DOI: 10.18632/oncotarget.9561] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 05/02/2016] [Indexed: 12/31/2022] Open
Abstract
Extracellular vesicles (EVs) secreted from cancer cells have potential for generating cancer biomarker signatures. Fibronectin (FN) was selected as a biomarker candidate, due to the presence in surface on EVs secreted from human breast cancer cell lines. A subsequent study used two types of enzyme-linked immunosorbent assays (ELISA) to determine the presence of these proteins in plasma samples from disease-free individuals (n=70), patients with BC (n=240), BC patients after surgical resection (n=40), patients with benign breast tumor (n=55), and patients with non-cancerous diseases (thyroiditis, gastritis, hepatitis B, and rheumatoid arthritis; n=80). FN levels were significantly elevated (p<. 0001) at all stages of BC, and returned to normal after tumor removal. The diagnostic accuracy for FN detection in extracellular vesicles (ELISA method 1) (area under the curve, 0.81; 95% CI, 0.76 to 0.86; sensitivity of 65.1% and specificity of 83.2%) were also better than those for FN detection in the plasma (ELISA method 2) (area under the curve, 0.77; 95% CI, 0.72 to 0.83; sensitivity of 69.2% and specificity of 73.3%) in BC. The diagnostic accuracy of plasma FN was similar in both the early-stage BC and all BC patients, as well as in the two sets. This liquid biopsy to detect FN on circulating EVs could be a promising method to detect early breast cancer.
Collapse
Affiliation(s)
- Pyong-Gon Moon
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Jeong-Eun Lee
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Young-Eun Cho
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Soo Jung Lee
- Department of Oncology/Hematology, Kyungpook National University Hospital, Daegu 700-721, Republic of Korea
| | - Yee Soo Chae
- Department of Oncology/Hematology, Kyungpook National University Hospital, Daegu 700-721, Republic of Korea
| | - Jin Hyang Jung
- Department of Breast & Thyroid Surgery, Kyungpook National University Hospital, Daegu 700-721, Republic of Korea
| | - In-San Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, KU-KIST School, Korea University, Seoul 02841, Republic of Korea
| | - Ho Yong Park
- Department of Breast & Thyroid Surgery, Kyungpook National University Hospital, Daegu 700-721, Republic of Korea
| | - Moon-Chang Baek
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| |
Collapse
|
13
|
Silva CCF, Menezes MC, Palomino M, Oliveira AK, Iwai LK, Faria M, Portaro FV. Peptides derived from plasma proteins released by bothropasin, a metalloprotease present in the Bothrops jararaca venom. Toxicon 2017; 137:65-72. [PMID: 28690013 DOI: 10.1016/j.toxicon.2017.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/04/2017] [Accepted: 07/06/2017] [Indexed: 12/31/2022]
Abstract
Viperid snake venoms contain proteases that affect hemostasis by degrading important proteins such as those that participate in the coagulation cascade. The Bothrops jararaca venom presents as its main components metallo and serine proteases, which comprise around 65% of the venom composition. Bothropasin is a hemorrhagic metalloprotease from the B. jararaca venom which causes disruption of the basement membrane of the vascular endothelium, resulting in bleeding. Although the bothropasin ability to degrade plasmatic and extracellular matrix proteins in vitro has been described, the primary sequence of the released peptides is unknown. This research study presents the peptide identification from both fibrinogen and fibronectin, generated by bothropasin proteolytic activity. Among the fibrinogen derived peptides identified by mass spectrometry, analogous of endogenous products like the fibrinopeptides A and B were found, as well as other sequences described in the literature with vasoactive or antiangiogenic properties. A series of peptides derived from fibronectin by the action of bothropasin were described, and for most of them no biological activity has been described. However, exceptionally a peptide that is known as a bond site for B cells was found. This study indicates that, beyond to the degradation of human proteins, bothropasin can generate bioactive peptides, which may participate in the envenoming process by Bothrops snakes. Also important, the knowledge of the formed peptides, based on the cleavage sites of the hydrolyzed proteins, provided the opportunity to study the primary specificity of bothropasin.
Collapse
Affiliation(s)
| | - Milene Cristina Menezes
- Special Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | - Miryam Palomino
- Special Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | - Ana Karina Oliveira
- Special Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | - Leo Kei Iwai
- Special Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | - Marcella Faria
- Special Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | | |
Collapse
|
14
|
Grigoriou E, Cantini M, Dalby MJ, Petersen A, Salmeron-Sanchez M. Cell migration on material-driven fibronectin microenvironments. Biomater Sci 2017; 5:1326-1333. [PMID: 28612879 PMCID: PMC5858633 DOI: 10.1039/c7bm00333a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/06/2017] [Indexed: 12/15/2022]
Abstract
Cell migration is a fundamental process involved in a wide range of biological phenomena. However, how the underlying mechanisms that control migration are orchestrated is not fully understood. In this work, we explore the migratory characteristics of human fibroblasts using different organisations of fibronectin (FN) triggered by two chemically similar surfaces, poly(ethyl acrylate) (PEA) and poly(methyl acrylate) (PMA); cell migration is mediated via an intermediate layer of fibronectin (FN). FN is organised into nanonetworks upon simple adsorption on PEA whereas a globular conformation is observed on PMA. We studied cell speed over the course of 24 h and the morphology of focal adhesions in terms of area and length. Additionally, we analysed the amount of cell-secreted FN as well as FN remodelling. Velocity of human fibroblasts was found to exhibit a biphasic behaviour on PEA, whereas it remained fairly constant on PMA. FA analysis revealed more mature focal adhesions on PEA over time contrary to smaller FAs found on PMA. Finally, human fibroblasts seemed to remodel adsorbed FN more on PMA than on PEA. Overall, these results indicate that the cell-protein-material interface affects cell migratory behaviour. Analysis of FAs together with FN secretion and remodelling were associated with differences in cell velocity providing insights into the factors that can modulate cell motility.
Collapse
Affiliation(s)
- E. Grigoriou
- Division of Biomedical Engineering , School of Engineering , University of Glasgow , Glasgow , UK .
| | - M. Cantini
- Division of Biomedical Engineering , School of Engineering , University of Glasgow , Glasgow , UK .
| | - M. J. Dalby
- Centre for Cell Engineering , University of Glasgow , UK
| | - A. Petersen
- Berlin Brandenburg Center for Regenerative Therapies , Charité-Universitätsmedizin Berlin , Berlin , Germany .
| | - M. Salmeron-Sanchez
- Division of Biomedical Engineering , School of Engineering , University of Glasgow , Glasgow , UK .
| |
Collapse
|
15
|
Deng X, Li X, Chen W, Zhao T, Huang W, Qian H. Design, synthesis and biological evaluation of peptide dendrimers with wound healing promoting activity. Med Chem Res 2017. [DOI: 10.1007/s00044-016-1777-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Hocking DC, Brennan JR, Raeman CH. A Small Chimeric Fibronectin Fragment Accelerates Dermal Wound Repair in Diabetic Mice. Adv Wound Care (New Rochelle) 2016; 5:495-506. [PMID: 27867754 PMCID: PMC5105350 DOI: 10.1089/wound.2015.0666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/23/2015] [Indexed: 12/30/2022] Open
Abstract
Objective: During wound repair, soluble fibronectin is converted into biologically active, insoluble fibrils via a cell-mediated process. This fibrillar, extracellular matrix (ECM) form of fibronectin stimulates cell processes critical to tissue repair. Nonhealing wounds show reduced levels of ECM fibronectin fibrils. The objective of this study was to produce a small, recombinant wound supplement with the biological activity of insoluble fibronectin fibrils. Approach: A chimeric fibronectin fragment was produced by inserting the integrin-binding Arg-Gly-Asp (RGD) loop from the tenth type III repeat of fibronectin (FNIII10) into the analogous site within the heparin-binding, bioactive fragment of the first type III repeat (FNIII1H). FNIII1HRGD was tested for its ability to support cell functions necessary for wound healing, and then evaluated for its capacity to accelerate healing of full-thickness dermal wounds in diabetic mice. Results:In vitro, FNIII1HRGD supported cell adhesion, proliferation, and ECM fibronectin deposition. Application of FNIII1HRGD to dermal wounds of diabetic mice significantly enhanced wound closure compared with controls (73.9% ±4.1% vs. 58.1% ±4.7% closure on day 9, respectively), and significantly increased granulation tissue thickness (2.88 ± 0.75-fold increase over controls on day 14). Innovation: Recombinant proteins designed to functionally mimic the ECM form of fibronectin provide a novel therapeutic approach to circumvent diminished fibronectin fibril formation by delivering ECM fibronectin signals in a soluble form to chronic wounds. Conclusion: A small, chimeric fibronectin protein was developed. FNIII1HRGD demonstrated enhanced bioactivity in vitro and stimulated wound repair in a murine model of chronic wounds.
Collapse
Affiliation(s)
- Denise C. Hocking
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York
| | - James R. Brennan
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Carol H. Raeman
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| |
Collapse
|
17
|
Serezani APM, Bozdogan G, Sehra S, Walsh D, Krishnamurthy P, Sierra Potchanant EA, Nalepa G, Goenka S, Turner MJ, Spandau DF, Kaplan MH. IL-4 impairs wound healing potential in the skin by repressing fibronectin expression. J Allergy Clin Immunol 2016; 139:142-151.e5. [PMID: 27554818 DOI: 10.1016/j.jaci.2016.07.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 05/27/2016] [Accepted: 07/05/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is characterized by intense pruritis and is a common childhood inflammatory disease. Many factors are known to affect AD development, including the pleiotropic cytokine IL-4. Yet little is known regarding the direct effects of IL-4 on keratinocyte function. OBJECTIVE AND METHODS In this report RNA sequencing and functional assays were used to define the effect of the allergic environment on primary keratinocyte function and wound repair in mice. RESULTS Acute or chronic stimulation by IL-4 modified expression of more than 1000 genes expressed in human keratinocytes that are involved in a broad spectrum of nonoverlapping functions. Among the IL-4-induced changes, repression of fibronectin critically impaired the human keratinocyte wound response. Moreover, in mouse models of spontaneous and induced AD-like lesions, there was delayed re-epithelialization. Importantly, topical treatment with fibronectin restored the epidermal repair response. CONCLUSION Keratinocyte gene expression is critically shaped by IL-4, altering cell fate decisions, which are likely important for the clinical manifestations and pathology of allergic skin disease.
Collapse
Affiliation(s)
- Ana P M Serezani
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Gunseli Bozdogan
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Sarita Sehra
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Daniel Walsh
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Purna Krishnamurthy
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Elizabeth A Sierra Potchanant
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind; Division of Pediatric Hematology-Oncology Bone Marrow Failure Program, Indiana University School of Medicine, Indianapolis, Ind; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Ind
| | - Grzegorz Nalepa
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind; Division of Pediatric Hematology-Oncology Bone Marrow Failure Program, Indiana University School of Medicine, Indianapolis, Ind; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Ind
| | - Shreevrat Goenka
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind
| | - Matthew J Turner
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Ind
| | - Dan F Spandau
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Ind
| | - Mark H Kaplan
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Ind.
| |
Collapse
|
18
|
Zeng Q, Desai MS, Jin HE, Lee JH, Chang J, Lee SW. Self-Healing Elastin–Bioglass Hydrogels. Biomacromolecules 2016; 17:2619-25. [DOI: 10.1021/acs.biomac.6b00621] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Qiongyu Zeng
- Department
of Bioengineering, University of California, Berkeley, Berkeley, California 94720, United States
- Biological
Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Med-X
Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, People’s Republic of China
| | - Malav S. Desai
- Department
of Bioengineering, University of California, Berkeley, Berkeley, California 94720, United States
- Biological
Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hyo-Eon Jin
- Department
of Bioengineering, University of California, Berkeley, Berkeley, California 94720, United States
- Biological
Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ju Hun Lee
- Department
of Bioengineering, University of California, Berkeley, Berkeley, California 94720, United States
- Biological
Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jiang Chang
- Med-X
Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, People’s Republic of China
- Shanghai
Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi
Road, Shanghai 200050, People’s Republic of China
| | - Seung-Wuk Lee
- Department
of Bioengineering, University of California, Berkeley, Berkeley, California 94720, United States
- Biological
Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
19
|
Therapeutic inhibition of breast cancer bone metastasis progression and lung colonization: breaking the vicious cycle by targeting α5β1 integrin. Breast Cancer Res Treat 2016; 157:489-501. [PMID: 27255534 DOI: 10.1007/s10549-016-3844-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/24/2016] [Indexed: 10/21/2022]
Abstract
At diagnosis, 10 % of breast cancer patients already have locally advanced or metastatic disease; moreover, metastasis eventually develops in at least 40 % of early breast cancer patients. Osteolytic bone colonization occurs in 80-85 % of metastatic breast cancer patients and is thought to be an early step in metastatic progression. Thus, breast cancer displays a strong preference for metastasis to bone, and most metastatic breast cancer patients will experience its complications. Our prior research has shown that the α5β1 integrin fibronectin receptor mediates both metastatic and angiogenic invasion. We invented a targeted peptide inhibitor of activated α5β1, Ac-PHSCN-NH2 (PHSCN), as a validated lead compound to impede both metastatic invasion and neovascularization. Systemic PHSCN monotherapy prevented disease progression for up to 14 months in Phase I clinical trial. Here, we report that the next-generation construct, Ac-PhScN-NH2 (PhScN), which contains D-isomers of histidine (h) and cysteine (c), is greater than 100,000-fold more potent than PHSCN at blocking basement membrane invasion. Moreover, PhScN is also up to 10,000-fold more potent than PHSCN at inhibiting lung extravasation and colonization in athymic mice for both MDA-MB-231 metastatic and SUM149PT inflammatory breast cancer cells. Furthermore, we show that systemic treatment with 50 mg/kg PhScN monotherapy reduces established intratibial MDA-MB-231 bone colony progression by 80 %. Thus, PhScN is a highly potent, well-tolerated inhibitor of both lung colonization and bone colony progression.
Collapse
|
20
|
Anti-angiogenic mechanism of IPS-05002, a novel antagonist against integrin a5β1, determined by ProteoChip-based antibody array. BIOCHIP JOURNAL 2016. [DOI: 10.1007/s13206-016-0303-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
21
|
Lee JE, Moon PG, Cho YE, Kim YB, Kim IS, Park H, Baek MC. Identification of EDIL3 on extracellular vesicles involved in breast cancer cell invasion. J Proteomics 2015; 131:17-28. [PMID: 26463135 DOI: 10.1016/j.jprot.2015.10.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 09/09/2015] [Accepted: 10/06/2015] [Indexed: 12/24/2022]
Abstract
Cancer cell-derived extracellular vesicles have been linked to the pathogenesis of various cancers; however, the role of extracellular vesicles in tumorigenesis remains unclear. To identify extracellular vesicle proteins involved in cancer metastasis, quantitative proteomic analyses were performed on extracellular vesicles derived from two representative breast cancer cell lines: the less invasive MCF-7 and the invasive MDA-MB-231. Proteomic analysis allowed for the identification of 270 proteins in the extracellular vesicles. Here we report a new function of EDIL3 on extracellular vesicles, which are sufficient for enhancement of cell invasion and for acceleration of lung metastasis in vivo. This invasion is most likely mediated via the integrin-FAK signaling cascade in breast cancer cells. However, these effects are suppressed when EDIL3 is inactivated, providing evidence for a critical role of EDIL3 in development of cancer. Consistently, in human patients with metastatic breast cancer, the levels of EDIL3 on circulating extracellular vesicles are significantly elevated. This information is a remarkable breakthrough in understanding of the molecular mechanism underlying metastasis of breast cancer as well as in the research for cancer biomarkers using circulating extracellular vesicles. Furthermore, targeting EDIL3 on extracellular vesicles may lead to a new therapeutic option for treatment of breast cancer.
Collapse
Affiliation(s)
- Jeong-Eun Lee
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Pyong-Gon Moon
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Young-Eun Cho
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Young-Bum Kim
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - In-San Kim
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
| | - Hoyong Park
- Department of Breast & Thyroid Surgery, Kyungpook National University Hospital, Daegu 700-721, Republic of Korea
| | - Moon-Chang Baek
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea.
| |
Collapse
|
22
|
Pinilla YT, Patarroyo MA, Velandia ML, Segura NA, Bello FJ. The effects of Sarconesiopsis magellanica larvae (Diptera: Calliphoridae) excretions and secretions on fibroblasts. Acta Trop 2015; 142:26-33. [PMID: 25445745 DOI: 10.1016/j.actatropica.2014.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 10/30/2014] [Accepted: 11/01/2014] [Indexed: 10/24/2022]
Abstract
Sarconesiopsis magellanica is a necrophagous blowfly which is relevant in both forensic and medical sciences. Previous studies regarding this species have led to understanding life-cycle, population and reproduction parameters, as well as identifying and characterising proteolytic enzymes derived from larval excretions and secretions (ES). As other studies have shown that ES proteolytic activity plays a significant role in wound healing and fibroblasts play a relevant role in granulation tissue formation during such healing, the present study was aimed at analysing the biological effect of S. magellanica larval ES on fibroblasts. ES were obtained from third-instar larvae and added to fibroblast cells at three concentrations (10, 5 and 1 μg/mL) to evaluate their behaviour. MTT assays were used for analysing cell proliferation and viability, whilst cell adhesion was measured by optical density with 10% SDS. Fibroblast migration and morphology was recorded by microscopic observation. ES did not affect fibroblast viability and induced an increase in cell proliferation; cell adhesion became reduced, whilst cell migration through extracellular matrix increased. ES also induced a decreased cell surface and morphological alterations. Changes in all the above-mentioned parameters were reduced when ES were incubated at 60 °C, probably due to protease denaturation. These results suggested that the proteases contained in S. magellanica larval ES contributed towards granulation tissue formation, increased cell migration and promoted cell proliferation. All these data support carrying out further experiments aimed at validating S. magellanica usefulness in larval therapy.
Collapse
|
23
|
Nishida T, Inui M, Nomizu M. Peptide therapies for ocular surface disturbances based on fibronectin-integrin interactions. Prog Retin Eye Res 2015; 47:38-63. [PMID: 25645519 DOI: 10.1016/j.preteyeres.2015.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 01/18/2015] [Accepted: 01/21/2015] [Indexed: 11/24/2022]
Abstract
The condition of the corneal epithelium is a critical determinant of corneal transparency and clear vision. The corneal epithelium serves as a barrier to protect the eye from external insults, with its smooth surface being essential for its optical properties. Disorders of the corneal epithelium include superficial punctate keratopathy, corneal erosion, and persistent epithelial defects (PEDs). The prompt resolution of these disorders is important for minimization of further damage to the cornea. Currently available treatment modalities for corneal epithelial disorders are based on protection of the ocular surface in order to allow natural healing to proceed. PEDs remain among the most difficult corneal conditions to treat, however. On the basis of characterization of the pathobiology of PEDs at the cell and molecular biological levels, we have strived to develop new modes of treatment for these defects. These treatments rely on two key concepts: provision of a substrate, such as the adhesive glycoprotein fibronectin, for the attachment and migration of corneal epithelial cells, and activation of these cells by biological agents such as the combination of substance P and insulin-like growth factor-1 (IGF-1). Central to both approaches is the role of the fibronectin-integrin system in corneal epithelial wound healing. Determination of the minimum amino acid sequences required for the promotion of corneal epithelial wound closure by fibronectin (PHSRN) and by substance P (FGLM-amide) plus IGF-1 (SSSR) has led to the development of peptide eyedrops for the treatment of PEDs that are free of adverse effects of the parent molecules.
Collapse
Affiliation(s)
- Teruo Nishida
- Ohshima Hospital of Ophthalmology, 11-8 Kamigofuku, Hakata-ku, Fukuoka 812-0036, Japan; Yamaguchi University, 1-1-1 Minami-kogushi, Ube City, Yamaguchi 755-8505, Japan.
| | - Makoto Inui
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-kogushi, Ube City, Yamaguchi 755-8505, Japan
| | - Motoyoshi Nomizu
- Laboratory of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
24
|
Chatterjee A, Sen T, Ganguly K, Biswas J. Focal adhesion kinase induces matrix metalloproteinase-2 by involving α5β1-mediated signaling in breast cancer cell, MCF-7. ACTA MEDICA INTERNATIONAL 2015. [DOI: 10.5530/ami.2015.1.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
25
|
Pulsipher A, Park S, Dutta D, Luo W, Yousaf MN. In situ modulation of cell behavior via smart dual-ligand surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13656-66. [PMID: 25373713 PMCID: PMC4334223 DOI: 10.1021/la503521x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Due to the highly complex nature of the extracellular matrix (ECM), the design and implementation of dynamic, stimuli-responsive surfaces that present well-defined ligands and serve as model ECM substrates have been of tremendous interest to biomaterials, biosensor, and cell biology communities. Such tools provide strategies for identifying specific ligand-receptor interactions that induce vital biological consequences. Herein, we report a novel dual-ligand-presenting surface methodology that modulates dynamic ECM properties to investigate various cell behaviors. Peptides PHSRN, cRGD, and KKKTTK, which mimic the cell- and heparan sulfate-binding domains of fibronectin, and carbohydrates Gal and Man were combined with cell adhesive RGD to survey possible synergistic or antagonist ligand effects on cell adhesion, spreading, growth, and migration. Soluble molecule and enzymatic inhibition assays were also performed, and the levels of focal adhesion kinase in cells subjected to different ligand combinations were quantified. A redox-responsive trigger was incorporated into this surface strategy to spontaneously release ligands in the presence of adhered cells, and cell spreading, growth, and migration responses were measured and compared. The identity and nature of the dual-ligand combination directly influenced cell behavior.
Collapse
Affiliation(s)
- Abigail Pulsipher
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Sungjin Park
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Debjit Dutta
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Wei Luo
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
- Department
of Chemistry and Biology, York University, Toronto, Ontario M3J 1P3, Canada
| | - Muhammad N. Yousaf
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
- Department
of Chemistry and Biology, York University, Toronto, Ontario M3J 1P3, Canada
- E-mail: . Tel: (416) 736-2100, ext
77718
| |
Collapse
|
26
|
Banerjee P, Suguna L, Shanthi C. Wound healing activity of a collagen-derived cryptic peptide. Amino Acids 2014; 47:317-28. [PMID: 25385312 DOI: 10.1007/s00726-014-1860-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Accepted: 10/21/2014] [Indexed: 01/08/2023]
Abstract
Wound healing involves a well-controlled series of interactions among cells and several mediators leading to the restoration of damaged tissue. Degradation of the extracellular matrix (ECM) protein collagen during remodelling of wound tissue leads to the release of bioactive peptides that can possibly influence the healing process. The RGD-containing, antioxidative collagen peptide E1 isolated in an earlier work was screened in this study for its ability to influence multiple steps of the wound healing process. E1 was assayed for and found to be chemotactic. Excision and incision wounds were created on separate groups of rats and E1 was administered topically. The wound tissues were isolated on the 4th and 8th days post-wound and subjected to biochemical and biophysical analysis. A significant decrease in lipid peroxides in the treatment group confirmed the in vivo antioxidant capacity of E1. The treatment group also displayed significant increase in total protein, collagen and amino sugar synthesis indicating faster ECM formation. The significantly increased rate of wound contraction and reepithelialisation along with higher tensile strength of the wound tissue corroborated the results of biochemical analysis. The results confirm the significant role played by collagen peptides in accelerating the healing process and justify their possible use as a pharmaceutical agent.
Collapse
Affiliation(s)
- Pradipta Banerjee
- School of Bio Science and Technology, VIT University, Vellore, 632014, Tamil Nadu, India
| | | | | |
Collapse
|
27
|
Tjin MS, Chua AWC, Ma DR, Lee ST, Fong E. Human epidermal keratinocyte cell response on integrin-specific artificial extracellular matrix proteins. Macromol Biosci 2014; 14:1125-34. [PMID: 24789105 DOI: 10.1002/mabi.201400015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/10/2014] [Indexed: 11/11/2022]
Abstract
Cell-matrix interactions play critical roles in regulating cellular behavior in wound repair and regeneration of the human skin. In particular, human skin keratinocytes express several key integrins such as alpha5beta1, alpha3beta1, and alpha2beta1 for binding to the extracellular matrix (ECM) present in the basement membrane in uninjured skin. To mimic these key integrin-ECM interactions, artificial ECM (aECM) proteins containing functional domains derived from laminin 5, type IV collagen, fibronectin, and elastin are prepared. Human skin keratinocyte cell responses on the aECM proteins are specific to the cell-binding domain present in each construct. Keratinocyte attachment to the aECM protein substrates is also mediated by specific integrin-material interactions. In addition, the aECM proteins are able to support the proliferation of keratinocyte stem cells, demonstrating their promise for use in skin tissue engineering.
Collapse
Affiliation(s)
- Monica Suryana Tjin
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, Nanyang Avenue, 639798, Singapore
| | | | | | | | | |
Collapse
|
28
|
Veine DM, Yao H, Stafford DR, Fay KS, Livant DL. A D-amino acid containing peptide as a potent, noncovalent inhibitor of α5β1 integrin in human prostate cancer invasion and lung colonization. Clin Exp Metastasis 2014; 31:379-93. [PMID: 24464034 DOI: 10.1007/s10585-013-9634-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 12/28/2013] [Indexed: 01/09/2023]
Abstract
Primary tumors often give rise to disseminated tumor cells (DTC's), which acquire full malignancy after invading distant site(s). Thus, DTC's may be a productive target for preventing prostate cancer metastasis progression. Our prior research showed that PHSCN peptide (Ac-PHSCN-NH2) targets activated α5β1 integrin to prevent invasion and metastasis in preclinical adenocarcinoma models, and disease progression in Phase I clinical trial. Here, we report that D-stereoisomer replacement of histidine and cysteine in PHSCN produces a highly potent derivative, Ac-PhScN-NH2 (PhScN). PhScN was 27,000- to 150,000-fold more potent as an inhibitor of basement membrane invasion by DU 145 and PC-3 prostate cancer cells. A large increase in invasion-inhibitory potency occurred after covalent modification of the sulfhydryl group in PHSCN to prevent disulfide bond formation; while the potency of covalently modified PhScN was not significantly increased. Thus PhScN and PHSCN invasion inhibition occurs by a noncovalent mechanism. These peptides also displayed similar cell surface binding dissociation constants (Kd), and competed for the same site. Consistent with its increased invasion-inhibitory potency, PhScN was also a highly potent inhibitor of lung extravasation and colonization in athymic nude mice: it was several hundred- or several thousand-fold more potent than PHSCN at blocking extravasation by PC-3 or DU 145 cells, and 111,000- or 379,000-fold more potent at inhibiting lung colonization, respectively. Furthermore, systemic 5 mg/kg PhScN monotherapy was sufficient to cause complete regression of established, intramuscular DU 145 tumors. PhScN thus represents a potent new family of therapeutic agents targeting metastasis by DTC's to prevent parallel progression in prostate cancer.
Collapse
Affiliation(s)
- Donna M Veine
- Department of Radiation Oncology, University of Michigan, Room 4424F Medical Science 1, 1301 Catherine Street, Ann Arbor, MI, 48109-5637, USA
| | - Hongren Yao
- Department of Radiation Oncology, University of Michigan, Room 4424F Medical Science 1, 1301 Catherine Street, Ann Arbor, MI, 48109-5637, USA
| | - Daniel R Stafford
- Department of Radiation Oncology, University of Michigan, Room 4424F Medical Science 1, 1301 Catherine Street, Ann Arbor, MI, 48109-5637, USA
| | - Kevin S Fay
- Department of Radiation Oncology, University of Michigan, Room 4424F Medical Science 1, 1301 Catherine Street, Ann Arbor, MI, 48109-5637, USA
| | - Donna L Livant
- Department of Radiation Oncology, University of Michigan, Room 4424F Medical Science 1, 1301 Catherine Street, Ann Arbor, MI, 48109-5637, USA.
| |
Collapse
|
29
|
Stoffels JMJ, Zhao C, Baron W. Fibronectin in tissue regeneration: timely disassembly of the scaffold is necessary to complete the build. Cell Mol Life Sci 2013; 70:4243-53. [PMID: 23756580 PMCID: PMC11113129 DOI: 10.1007/s00018-013-1350-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/04/2013] [Accepted: 04/22/2013] [Indexed: 12/31/2022]
Abstract
Tissue injury initiates extracellular matrix molecule expression, including fibronectin production by local cells and fibronectin leakage from plasma. To benefit tissue regeneration, fibronectin promotes opsonization of tissue debris, migration, proliferation, and contraction of cells involved in the healing process, as well as angiogenesis. When regeneration proceeds, the fibronectin matrix is fully degraded. However, in a diseased environment, fibronectin clearance is often disturbed, allowing structural variants to persist and contribute to disease progression and failure of regeneration. Here, we discuss first how fibronectin helps tissue regeneration, with a focus on normal cutaneous wound healing as an example of complete tissue recovery. Then, we continue to argue that, although the fibronectin matrix generated following cartilage and central nervous system white matter (myelin) injury initially benefits regeneration, fibronectin clearance is incomplete in chronic wounds (skin), osteoarthritis (cartilage), and multiple sclerosis (myelin). Fibronectin fragments or aggregates persist, which impair tissue regeneration. The similarities in fibronectin-mediated mechanisms of frustrated regeneration indicate that complete fibronectin clearance is a prerequisite for recovery in any tissue. Also, they provide common targets for developing therapeutic strategies in regenerative medicine.
Collapse
Affiliation(s)
- Josephine M. J. Stoffels
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Chao Zhao
- Wellcome Trust—Medical Research Council Stem Cell Institute and Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES UK
| | - Wia Baron
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| |
Collapse
|
30
|
Roy DC, Mooney NA, Raeman CH, Dalecki D, Hocking DC. Fibronectin matrix mimetics promote full-thickness wound repair in diabetic mice. Tissue Eng Part A 2013; 19:2517-26. [PMID: 23808793 DOI: 10.1089/ten.tea.2013.0024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
During tissue repair, fibronectin is converted from a soluble, inactive form into biologically active extracellular matrix (ECM) fibrils through a cell-dependent process. ECM fibronectin promotes numerous cell processes that are critical to tissue repair and regulates the assembly of other proteins into the matrix. Nonhealing wounds show reduced levels of ECM fibronectin. To functionally mimic ECM fibronectin, a series of fibronectin matrix mimetics was developed by directly coupling the matricryptic, heparin-binding fragment of the first type III repeat of fibronectin (FNIII1H) to various sequences from the integrin-binding domain (FNIII8-10). The recombinant proteins were produced as glutathione-S-transferase (GST)-tagged fusion proteins for ease of production and purification. Full-thickness, excisional wounds were produced in genetically diabetic mice, and fibronectin matrix mimetics were applied directly to the wounds. A significant enhancement of wound closure was observed by day 9 in response to GST/III1H,8-10 versus GST-treated controls (73.9%±4.1% vs. 58.1%±4.7% closure, respectively). Two weeks after injury, fibronectin matrix mimetic-treated wounds had developed a multi-layered epithelium that completely covered the wound space. Furthermore, significant increases in granulation tissue thickness were observed in response to treatment with GST/III1H,8-10 (4.05±0.93-fold), GST/III1H,8,10 (2.91±0.49-fold), or GST/III1H,8(RGD) (3.55±0.59-fold) compared with GST controls, and was accompanied by dense collagen deposition, the presence of myofibroblasts, and functional vasculature. Thus, the recombinant fibronectin matrix analogs normalized the impairment in repair observed in this chronic wound model and may provide a new approach to accelerate the healing of diabetic wounds.
Collapse
Affiliation(s)
- Daniel C Roy
- 1 Department of Biomedical Engineering, University of Rochester , Rochester, New York
| | | | | | | | | |
Collapse
|
31
|
Schaffner F, Ray AM, Dontenwill M. Integrin α5β1, the Fibronectin Receptor, as a Pertinent Therapeutic Target in Solid Tumors. Cancers (Basel) 2013; 5:27-47. [PMID: 24216697 PMCID: PMC3730317 DOI: 10.3390/cancers5010027] [Citation(s) in RCA: 143] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 01/09/2013] [Accepted: 01/11/2013] [Indexed: 12/11/2022] Open
Abstract
Integrins are transmembrane heterodimeric proteins sensing the cell microenvironment and modulating numerous signalling pathways. Changes in integrin expression between normal and tumoral cells support involvement of specific integrins in tumor progression and aggressiveness. This review highlights the current knowledge about α5β1 integrin, also called the fibronectin receptor, in solid tumors. We summarize data showing that α5β1 integrin is a pertinent therapeutic target expressed by tumoral neovessels and tumoral cells. Although mainly evaluated in preclinical models, α5β1 integrin merits interest in particular in colon, breast, ovarian, lung and brain tumors where its overexpression is associated with a poor prognosis for patients. Specific α5β1 integrin antagonists will be listed that may represent new potential therapeutic agents to fight defined subpopulations of particularly aggressive tumors.
Collapse
Affiliation(s)
- Florence Schaffner
- UMR 7213 CNRS, Laboratoire de Biophotonique et Pharmacologie, Tumoral Signaling and Therapeutic Targets, Université de Strasbourg, Faculté de Pharmacie, 67401 Illkirch, France.
| | | | | |
Collapse
|
32
|
Open Clinical Study of Eye Drops Containing the Fibronectin-Derived Peptide PHSRN for Treatment of Persistent Corneal Epithelial Defects. Cornea 2012; 31:1408-13. [DOI: 10.1097/ico.0b013e31824afd6c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
33
|
Abstract
Much of our understanding of the molecular control of menstruation arises from laboratory models that experimentally recapitulate some, but not all, aspects of uterine bleeding observed in women. These models include: in vitro culture of endometrial explants or isolated endometrial cells, transplantation of human endometrial tissue into immunodeficient mice and the induction of endometrial breakdown in appropriately pretreated mice. Each of these models has contributed to our understanding of molecular and cellular mechanisms of menstruation, but nonhuman primates, especially macaques, are the animal model of choice for evaluating therapies for menstrual disorders. In this chapter we review some basic aspects of menstruation, with special emphasis on the macaque model and its relevance to the clinical issues of irregular and heavy menstrual bleeding (HMB).
Collapse
Affiliation(s)
- Robert M Brenner
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA.
| | | |
Collapse
|
34
|
Magrì A, D'Alessandro F, Distefano DA, Campagna T, Pappalardo G, Impellizzeri G, La Mendola D. Copper(II) coordination properties of the integrin ligand sequence PHSRN and its new β-cyclodextrin conjugates. J Inorg Biochem 2012; 113:15-24. [DOI: 10.1016/j.jinorgbio.2012.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 03/30/2012] [Accepted: 04/02/2012] [Indexed: 01/05/2023]
|
35
|
Nishida T. The role of fibronectin in corneal wound healing explored by a physician–scientist. Jpn J Ophthalmol 2012; 56:417-31. [DOI: 10.1007/s10384-012-0165-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Accepted: 05/28/2012] [Indexed: 11/28/2022]
|
36
|
Role of α(5)β(1) Integrin Up-regulation in Radiation-Induced Invasion by Human Pancreatic Cancer Cells. Transl Oncol 2011; 4:282-92. [PMID: 21966545 DOI: 10.1593/tlo.11133] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 05/09/2011] [Accepted: 05/16/2011] [Indexed: 01/02/2023] Open
Abstract
RADIOTHERAPY IS USED IN THE MANAGEMENT OF PANCREATIC CANCER BECAUSE OF ITS HIGH PROPENSITY FOR LOCOREGIONAL RELAPSE: one third of patients succumb to localized disease. Thus, strategies to improve the efficacy of radiotherapy in pancreatic cancer are important to pursue. We used naturally serum-free, selectively permeable basement membranes and confocal microscopy of fluorescent antibody-stained human Panc-1, MiaPaCa-2, and BxPC-3 pancreatic cancer cell lines to investigate the effects of ionizing radiation on α(5)β(1) integrin fibronectin receptor expression and on α(5)β(1)-mediated invasion. We report that radiation rapidly induces pancreatic cancer cell invasion, and that radiation-induced invasion is caused by up-regulation of α(5)β(1) integrin fibronectin receptors by transcriptional and/or postendocytic recycling mechanisms. We also report that radiation causes α(5)β(1) up-regulation in Panc-1, MiaPaCa-2, and BxPC-3 tumor xenografts and that upregulated α(5)β(1) colocalizes with upregulated early or late endosomes in Panc-1 or BxPC-3 tumors, respectively, although it may colocalize significantly with both endosome types in MiaPaCa-2 tumors. Our results suggest that systemic inhibition of α(5)β(1)-mediated invasion might be an effective way to reduce radiation-induced pancreatic cancer cell invasion, thereby improving the efficacy of radiotherapy.
Collapse
|
37
|
alpha(5)beta(1) Integrin Ligand PHSRN Induces Invasion and alpha(5) mRNA in Endothelial Cells to Stimulate Angiogenesis. Transl Oncol 2011; 2:8-20. [PMID: 19252747 DOI: 10.1593/tlo.08187] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Revised: 10/07/2008] [Accepted: 10/08/2008] [Indexed: 11/18/2022] Open
Abstract
Angiogenesis requires endothelial cell invasion and is crucial for wound healing and for tumor growth and metastasis. Invasion of native collagen is mediated by the alpha(5)beta(1) integrin fibronectin receptor. Thus, alpha(5)beta(1) up-regulation on the surfaces of endothelial cells may induce endothelial cell invasion to stimulate angiogenesis. We report that the interaction of alpha(5)beta(1) with its PHSRN peptide ligand induces human microvascular endothelial cell invasion and that PHSRN-induced endothelial cell invasion is regulated by alpha(4)beta(1) integrin and requires matrix metalloproteinase 1 (MMP-1). Moreover, our results show that exposure to PHSRN causes rapid, specific up-regulation of surface levels of alpha(5)beta(1) integrin and significantly increases alpha(5) integrin mRNA in microvascular endothelial cells. Consistent with these results, alpha(5) small interfering RNA abrogates PHSRN-induced surface alpha(5) and MMP-1 up-regulation, as well as blocking invasion induction. We also observed dose-dependent, PHSRN-induced alpha(5)beta(1) integrin up-regulation on endothelial cells in vivo in Matrigel plugs. We further report that the PHSCN peptide, an alpha(5)beta(1)-targeted invasion inhibitor, blocks PHSRN-induced invasion, alpha(5)beta(1) up-regulation, alpha(5) mRNA induction, and MMP-1 secretion in microvascular endothelial cells and that systemic PHSCN administration prevents PHSRN-induced alpha(5)beta(1) up-regulation and angiogenesis in Matrigel plugs. These results demonstrate a critical role for alpha(5)beta(1) integrin and MMP-1 in mediating the endothelial cell invasion and angiogenesis and suggest that PHSRN-induced alpha(5) transcription and alpha(5)beta(1) up-regulation may form an important feed-forward mechanism for stimulating angiogenesis.
Collapse
|
38
|
Kim SH, Chegal W, Doh J, Cho HM, Moon DW. Study of cell-matrix adhesion dynamics using surface plasmon resonance imaging ellipsometry. Biophys J 2011; 100:1819-28. [PMID: 21463596 DOI: 10.1016/j.bpj.2011.01.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 01/03/2011] [Indexed: 01/16/2023] Open
Abstract
The interaction of cells with extracellular matrix, termed cell-matrix adhesions, importantly governs multiple cellular phenomena. Knowledge of the functional dynamics of cell-matrix adhesion could provide critical clues for understanding biological phenomena. We developed surface plasmon resonance imaging ellipsometry (SPRIE) to provide high contrast images of the cell-matrix interface in unlabeled living cells. To improve the contrast and sensitivity, the null-type imaging ellipsometry technique was integrated with an attenuated total reflection coupler. We verified that the imaged area of SPRIE was indeed a cell-matrix adhesion area by confocal microscopy imaging. Using SPRIE, we demonstrated that three different cell types exhibit distinct features of adhesion. SPRIE was applied to diverse biological systems, including during cell division, cell migration, and cell-cell communication. We imaged the cell-matrix anchorage of mitotic cells, providing the first label-free imaging of this interaction to our knowledge. We found that cell-cell communication can alter cell-matrix adhesion, possibly providing direct experimental evidence for cell-cell communication-mediated changes in cell adhesion. We also investigated shear-stress-induced adhesion dynamics in real time. Based on these data, we expect that SPRIE will be a useful methodology for studying the role of cell-matrix adhesion in important biological phenomena.
Collapse
Affiliation(s)
- Se-Hwa Kim
- Center for Nano-Bio Convergence Research, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
| | | | | | | | | |
Collapse
|
39
|
Shabbir SH, Eisenberg JL, Mrksich M. An inhibitor of a cell adhesion receptor stimulates cell migration. Angew Chem Int Ed Engl 2011; 49:7706-9. [PMID: 20830721 PMCID: PMC3076732 DOI: 10.1002/anie.201002699] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shagufta H Shabbir
- Department of Chemistry, The University of Chicago, Howard Hughes Medical Institute, 929 East 57th Street, Chicago, IL 60637, USA
| | | | | |
Collapse
|
40
|
Henderson B, Nair S, Pallas J, Williams MA. Fibronectin: a multidomain host adhesin targeted by bacterial fibronectin-binding proteins. FEMS Microbiol Rev 2011; 35:147-200. [DOI: 10.1111/j.1574-6976.2010.00243.x] [Citation(s) in RCA: 227] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
|
41
|
Shabbir SH, Eisenberg JL, Mrksich M. An Inhibitor of a Cell Adhesion Receptor Stimulates Cell Migration. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002699] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
42
|
Increased potency of the PHSCN dendrimer as an inhibitor of human prostate cancer cell invasion, extravasation, and lung colony formation. Clin Exp Metastasis 2010; 27:173-84. [PMID: 20339907 DOI: 10.1007/s10585-010-9316-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 02/17/2010] [Indexed: 10/19/2022]
Abstract
Activated alpha5beta1 integrin occurs specifically on tumor cells and on endothelial cells of tumor-associated vasculature, and plays a key role in invasion and metastasis. The PHSCN peptide (Ac-PHSCN-NH(2)) preferentially binds activated alpha5beta1, to block invasion in vitro, and inhibit growth, metastasis and tumor recurrence in preclinical models of prostate cancer. In Phase I clinical trial, systemic Ac-PHSCN-NH(2) monotherapy was well tolerated, and metastatic disease progression was prevented for 4-14 months in one-third of treated patients. We have developed a significantly more potent derivative, the PHSCN-polylysine dendrimer (Ac-PHSCNGGK-MAP). Using in vitro invasion assays with naturally serum-free basement membranes, we observed that the PHSCN dendrimer was 130- to 1900-fold more potent than the PHSCN peptide at blocking alpha5beta1-mediated invasion by DU 145 and PC-3 human prostate cancer cells, whether invasion was induced by serum, or by the Ac-PHSRN-NH(2) peptide, under serum-free conditions. The PHSCN dendrimer was also approximately 800 times more effective than PHSCN peptide at preventing DU 145 and PC-3 extravasation in the lungs of athymic mice. Chou-Talalay analysis suggested that inhibition of both invasion in vitro and extravasation in vivo by the PHSCN dendrimer are highly synergistic. We found that many extravasated DU 145 and PC-3 cells go onto develop into metastatic colonies, and that a single pretreatment with the PHSCN dendrimer was 100-fold more affective than the PHSCN peptide at reducing lung colony formation. Since many patients newly diagnosed with prostate cancer already have locally advanced or metastatic disease, the availability of a well-tolerated, nontoxic systemic therapy, like the PHSCN dendrimer, which prevents metastatic progression by inhibiting invasion, could be very beneficial.
Collapse
|
43
|
Yao H, Veine DM, Fay KS, Staszewski ED, Zeng ZZ, Livant DL. The PHSCN dendrimer as a more potent inhibitor of human breast cancer cell invasion, extravasation, and lung colony formation. Breast Cancer Res Treat 2010; 125:363-75. [DOI: 10.1007/s10549-010-0826-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Accepted: 02/26/2010] [Indexed: 10/19/2022]
|
44
|
Rexeisen EL, Fan W, Pangburn TO, Taribagil RR, Bates FS, Lodge TP, Tsapatsis M, Kokkoli E. Self-assembly of fibronectin mimetic peptide-amphiphile nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1953-1959. [PMID: 19877715 DOI: 10.1021/la902571q] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Single-tailed peptide-amphiphiles have been shown to form nanofibers in solution and gel after screening of their electrostatic charges, and those containing cell-binding motifs are promising as tissue engineering scaffolds. A fibronectin-mimetic peptide sequence was developed, containing both the primary binding domain RGD and the synergy binding domain PHSRN, which has shown superior cell adhesion properties over simple RGD sequences and fibronectin in 2D culture. In order to test this sequence in a 3D environment in the future, we have designed a C(16) single-tailed peptide-amphiphile, PR_g (with a peptide headgroup of GGGSSPHSRN(SG)(5)RGDSP), that forms nanofibers and a gel in solution without any screening of its positive charge. In this study, we characterized the self-assembly properties of the PR_g peptide-amphiphile via critical micelle concentration (CMC) measurements, circular dichroism (CD) spectroscopy, cryo-transmission electron microscopy (cryo-TEM), small angle neutron scattering (SANS), and rheology measurements. The CMC of the PR_g amphiphile was determined to be 38 microM. CD measurements showed that even though the peptide formed an unordered secondary structure, the peptide-amphiphile's spectrum after aging resembled more the spectrum of an alpha+beta protein. Cryo-TEM images of a 100 microM peptide-amphiphile solution showed individual nanofibers with a diameter of approximately 10 nm and lengths on the order of several micrometers. Images taken at higher concentrations (1 mM) show a high degree of bundling among the nanofibers, and at even higher concentrations (3 and 4 mM) SANS measurements also indicated that the peptide-amphiphile formed rod-shaped structures in solution. The peptide-amphiphile gel was monitored by parallel-plate rheometry, and the elastic modulus (G') was greater than the viscous modulus (G''), which indicates that PR_g forms a gel. The shear modulus for a 2 day old gel was measured to be approximately 500 Pa, which is within the modulus range for living tissue; thus, the PR_g gel shows potential as a possible scaffold for tissue engineering.
Collapse
Affiliation(s)
- Emilie L Rexeisen
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Mehrotra S, Languino LR, Raskett CM, Mercurio AM, Dohi T, Altieri DC. IAP regulation of metastasis. Cancer Cell 2010; 17:53-64. [PMID: 20129247 PMCID: PMC2818597 DOI: 10.1016/j.ccr.2009.11.021] [Citation(s) in RCA: 232] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 07/29/2009] [Accepted: 11/11/2009] [Indexed: 12/16/2022]
Abstract
Inhibitor-of-Apoptosis (IAP) proteins contribute to tumor progression, but the requirements of this pathway are not understood. Here, we show that intermolecular cooperation between XIAP and survivin stimulates tumor cell invasion and promotes metastasis. This pathway is independent of IAP inhibition of cell death. Instead, a survivin-XIAP complex activates NF-kappaB, which in turn leads to increased fibronectin gene expression, signaling by beta1 integrins, and activation of cell motility kinases FAK and Src. Therefore, IAPs are direct metastasis genes, and their antagonists could provide antimetastatic therapies in patients with cancer.
Collapse
Affiliation(s)
- Swarna Mehrotra
- Prostate Cancer Discovery and Development Program, University of Massachusetts Medical School, Worcester, MA 01605
| | - Lucia R. Languino
- Prostate Cancer Discovery and Development Program, University of Massachusetts Medical School, Worcester, MA 01605
| | - Christopher M. Raskett
- Prostate Cancer Discovery and Development Program, University of Massachusetts Medical School, Worcester, MA 01605
| | - Arthur M. Mercurio
- Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605
| | | | | |
Collapse
|
46
|
Miyamoto T, Tamura M, Kabashima N, Serino R, Shibata T, Furuno Y, Miyazaki M, Baba R, Sato N, Doi Y, Okazaki M, Otsuji Y. An integrin-activating peptide, PHSRN, ameliorates inhibitory effects of conventional peritoneal dialysis fluids on peritoneal wound healing. Nephrol Dial Transplant 2009; 25:1109-19. [PMID: 19926720 DOI: 10.1093/ndt/gfp601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bioincompatible peritoneal dialysis fluids (PDFs) cause pathological changes in the peritoneal membrane, related to membrane dysfunction and progressive peritoneal fibrosis. We investigated the effects of Pro-His-Ser-Arg-Asn (PHSRN) peptide, one of the fibronectin cell-binding domains that activates integrins and reinforces wound healing, on peritoneal remodelling in a rat peritoneal injury model undergoing peritoneal dialysis. METHODS The peritoneal mesothelial monolayer was removed by a stripping procedure in rats receiving conventional high glucose-containing PDF supplemented with or without PHSRN or control His-Ser-Pro-Asn-Hrg (HSPNR) peptides. Effects of PHSRN on cell motility and signalling molecules were examined in cultured rat peritoneal mesothelial cells (RPMCs) and normal rat kidney fibroblasts (NRKs). RESULTS The cytokeratin- and HBME-1-positive mesothelial cell monolayer was selectively removed by the procedure. By day 6, HBME-1-positive cells had regenerated to 53.3 +/- 6.5% of the peritoneal surface in the control group. Regeneration of the mesothelial layer was delayed in the PDF group (35.2 +/- 10.2%, P < 0.05), but PHSRN reversed the effects of PDF (51.7 +/- 9.6%, P < 0.05). PDF treatment increased thickening of granulomatous submesothelial tissue and numbers of ED1-, CD31- and alpha-smooth muscle actin-positive cells, but PHSRN ameliorated these effects. HSPNR had no effects on mesothelial regeneration or peritoneal wound healing. PHSRN, but not HSPNR, recovered glucose-induced inhibition of cell motility and phosphorylation of focal adhesion kinase and its downstream p130(Cas) in RPMCs and NRKs. CONCLUSIONS These results suggest that PHSRN has beneficial effects on peritoneal regeneration by reducing the inhibitory effects of conventional PDF on integrin-mediated wound healing.
Collapse
Affiliation(s)
- Tetsu Miyamoto
- Second Department of Internal Medicine, University of Occupational and Environmental Health School of Medicine, Kitakyushu, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Hattori A, Hozumi K, Ko JA, Chikama TI, Oomikawa K, Kato J, Ishida K, Hoshi N, Katagiri F, Kikkawa Y, Nomizu M, Nishida T. Sequence specificity of the PHSRN peptide from fibronectin on corneal epithelial migration. Biochem Biophys Res Commun 2009; 379:346-50. [DOI: 10.1016/j.bbrc.2008.12.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2008] [Accepted: 12/12/2008] [Indexed: 11/17/2022]
|
48
|
Tkalcević VI, Cuzić S, Parnham MJ, Pasalić I, Brajsa K. Differential evaluation of excisional non-occluded wound healing in db/db mice. Toxicol Pathol 2009; 37:183-92. [PMID: 19182213 DOI: 10.1177/0192623308329280] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The full-thickness wound in the genetically diabetic (db/db) mouse is a commonly used model of impaired wound healing. We investigated delayed healing of non-occluded, excisional, full-thickness, dermal wounds in db/db mice in comparison to their normal littermate controls and refined methods for monitoring skin wound re-epithelialization, contraction, granulation tissue formation, and inflammation. We have confirmed with a computer-assisted planimetry method the results of previous studies showing that healing of non-occluded full excision wounds in db/db mice does not occur by contraction as much as in healthy mice. In addition, we have developed separate histological methods for the assessment of re-epithelialization, contraction, granulation tissue (mature, immature, fibrosis), and inflammation (lipogranulomas, secondary, nonspecific). Using a new approach to histological assessment, we have shown that wound closure in db/db mice is delayed owing to: (1) delayed granulation tissue maturation; (2) ''laced,'' widely distributed granulation tissue around fat lobules; and (3) obstruction by lipogranulomas, whereas the rate of re-epithelialization seems to be the same as in C57Bl/6 mice. This methodology should permit a more precise differentiation of effects of novel therapeutic agents on the wound healing process in db/db mice.
Collapse
|
49
|
Demirgöz D, Garg A, Kokkoli E. PR_b-targeted PEGylated liposomes for prostate cancer therapy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:13518-13524. [PMID: 18954096 DOI: 10.1021/la801961r] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In recent years, there has been considerable effort in designing improved delivery systems by including site-directed surface ligands to further enhance their selective targeting. The goal of this study is to engineer alpha5beta1-targeted stealth liposomes (nanoparticles covered with poly(ethylene glycol) (PEG)) that will bind to alpha5beta1-expressing LNCaP human prostate cancer cells and efficiently release the encapsulated load intracellularly. For this purpose, liposomes (with and without PEG2000) were functionalized with a fibronectin-mimetic peptide (PR_b) and delivered to LNCaPs. The amount of PEG2000 and other liposomal components were characterized by 1H NMR, and the amount of peptide by the bicinchoninic acid protein assay. Fibronectin is the natural ligand for alpha5beta1, and a promising design for a fibronectinmimetic peptide includes both the primary binding site (RGD) and the synergy site (PHSRN) connected by a linker and extended off a surface by a spacer. We have previously designed a peptide-amphiphile, PRb, that employed a hydrophobic tail, connected to the N-terminus of a peptide headgroup composed of a spacer, the synergy site sequence, a linker mimicking both the distance and hydrophobicity/hydrophilicity present in the native protein fibronectin (thus presenting an overall "neutral" linker), and finally the primary binding sequence. We have examined different liposomal formulations, functionalized only with PR_b or with PR_b and PEG2000. For PR_b-targeted PEGylated liposomes, efficient cell binding was observed for peptide concentrations of 2 mol % and higher. When compared to GRGDSP-targeted stealth liposomes, PR_b functionalization was superior to that of GRGDSP as shown by increased LNCaP binding, internalization efficiency, as well as cytotoxicity after incubation of LNCaPs with tumor necrosis factor-alpha (TNFalpha)-encapsulated liposomes. More importantly, PR_b is alpha5beta1-specific, whereas many integrins bind to small RGD peptides. Thus, the proposed PR_b-targeted delivery system has the potential to deliver a therapeutic payload to prostate cancer cells in an efficient and specific manner.
Collapse
Affiliation(s)
- Döne Demirgöz
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | |
Collapse
|
50
|
Zielske SP, Livant DL, Lawrence TS. Radiation increases invasion of gene-modified mesenchymal stem cells into tumors. Int J Radiat Oncol Biol Phys 2008; 75:843-53. [PMID: 18849123 DOI: 10.1016/j.ijrobp.2008.06.1953] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2007] [Revised: 06/19/2008] [Accepted: 06/23/2008] [Indexed: 01/14/2023]
Abstract
PURPOSE Mesenchymal stem cells (MSCs) are multipotent cells in the bone marrow that have been found to migrate to tumors, suggesting a potential use for cancer gene therapy. MSCs migrate to sites of tissue damage, including normal tissues damaged by radiation. In this study, we investigated the effect of tumor radiotherapy on the localization of lentivirus-transduced MSCs to tumors. METHODS AND MATERIALS MSCs were labeled with a lipophilic dye to investigate their migration to colon cancer xenografts. Subsequently, the MSCs were transduced with a lentiviral vector to model gene therapy and mark the infused MSCs. LoVo tumor xenografts were treated with increasing radiation doses to assess the effect on MSC localization, which was measured by quantitative polymerase chain reaction. MSC invasion efficiency was determined in an invasion assay. RESULTS MSCs migrated to tumor xenografts of various origins, with few cells found in normal tissues. A lentiviral vector efficiently transduced MSCs in the presence, but not the absence, of hexadimethrine bromide (Polybrene). When LoVo tumors were treated with increasing radiation doses, more MSCs were found to migrate to them than to untreated tumors. Irradiation increased MSC localization in HT-29 and MDA-MB-231, but not UMSCC1, xenografts. Monocyte chemotactic protein-1 expression in tumors did not correlate with the basal levels of MSC infiltration; however, monocyte chemotactic protein-1 was modestly elevated in irradiated tumors. Media from irradiated LoVo cells stimulated MSC invasion into basement membranes. CONCLUSION These findings suggest that radiation-induced injury can be used to target MSCs to tumors, which might increase the effectiveness of MSC cancer gene therapy. The production of tumor-derived factors in response to radiation stimulates MSC invasion.
Collapse
Affiliation(s)
- Steven P Zielske
- Department of Radiation Oncology, University of Michigan, 1331 E. Ann St., Ann Arbor, MI 48109, USA.
| | | | | |
Collapse
|