1
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Kou H, Han Q, Zhang H, Xu C, Liao L, Hou Y, Wang H, Zhang J. Impact of changes in collagen construction and molecular state on integrin - binding properties. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1523-1536. [PMID: 38574261 DOI: 10.1080/09205063.2024.2338004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/21/2024] [Indexed: 04/06/2024]
Abstract
The interaction between the integrin and collagen is important in cell adhesion and signaling. Collagen, as the main component of extracellular matrix, is a base material for tissue engineering constructs. In tissue engineering, the collagen structure and molecule state may be altered to varying degrees in the process of processing and utilizing, thereby affecting its biological properties. In this work, the impact of changes in collagen structure and molecular state on the binding properties of collagen to integrin α2β1 and integrin specific cell adhesion were explored. The results showed that the molecular structure of collagen is destroyed under the influence of heating, freeze-grinding and irradiation, the triple helix integrity is reduced and molecular breaking degree is increased. The binding ability of collagen to integrin α2β1 is increased with the increase of triple helix integrity and decays exponentially with the increase of molecular breaking degree. The collagen molecular state can also influences the binding ability of collagen to cellular receptor. The collagen fibrils binding to integrin α2β1 and HT1080 cells is stronger than to collagen monomolecule. Meanwhile, the hybrid fibril exhibits a different cellular receptor binding performance from corresponding single species collagen fibril. These findings provide ideas for the design and development of new collagen-based biomaterials and tissue engineering research.
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Affiliation(s)
- Huizhi Kou
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Qingqiu Han
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Huihui Zhang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Chengzhi Xu
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Lixia Liao
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Yuanjing Hou
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Haibo Wang
- College of Life Science and Technology, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, China
| | - Juntao Zhang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
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2
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Zhou W, Liu Y, Dong J, Hu X, Su Z, Zhang X, Zhu C, Xiong L, Huang W, Bai J. Mussel-Derived and Bioclickable Peptide Mimic for Enhanced Interfacial Osseointegration via Synergistic Immunomodulation and Vascularized Bone Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2401833. [PMID: 38922775 DOI: 10.1002/advs.202401833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/25/2024] [Indexed: 06/28/2024]
Abstract
Inadequate osseointegration at the interface is a key factor in orthopedic implant failure. Mechanistically, traditional orthopedic implant interfaces fail to precisely match natural bone regeneration processes in vivo. In this study, a novel biomimetic coating on titanium substrates (DPA-Co/GFO) through a mussel adhesion-mediated ion coordination and molecular clicking strategy is engineered. In vivo and in vitro results confirm that the coating exhibits excellent biocompatibility and effectively promotes angiogenesis and osteogenesis. Crucially, the biomimetic coating targets the integrin α2β1 receptor to promote M2 macrophage polarization and achieves a synergistic effect between immunomodulation and vascularized bone regeneration, thereby maximizing osseointegration at the interface. Mechanical push-out tests reveal that the pull-out strength in the DPA-Co/GFO group is markedly greater than that in the control group (79.04 ± 3.20 N vs 31.47 ± 1.87 N, P < 0.01) and even surpasses that in the sham group (79.04 ± 3.20 N vs 63.09 ± 8.52 N, P < 0.01). In summary, the novel biomimetic coating developed in this study precisely matches the natural process of bone regeneration in vivo, enhancing interface-related osseointegration and showing considerable potential for clinical translation and applications.
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Affiliation(s)
- Wei Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Yang Liu
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Jiale Dong
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Xianli Hu
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Zheng Su
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Xianzuo Zhang
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Chen Zhu
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Liming Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Huang
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Jiaxiang Bai
- Department of Orthopaedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
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3
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Yao L, Ling B, Zhao S, Yu F, Liu H, Wang S, Xiao J. Versatile Self-Assembly of Triblock Peptides into Stable Collagen Mimetic Heterotrimers. Int J Mol Sci 2024; 25:6550. [PMID: 38928256 PMCID: PMC11203499 DOI: 10.3390/ijms25126550] [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: 04/13/2024] [Revised: 05/20/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
The construction of peptides to mimic heterogeneous proteins such as type I collagen plays a pivotal role in deciphering their function and pathogenesis. However, progress in the field has been severely hampered by the lack of capability to create stable heterotrimers with desired functional sequences and without the effect of homotrimers. We have herein developed a set of triblock peptides that can assemble into collagen mimetic heterotrimers with desired amino acids and are free from the interference of homotrimers. The triblock peptides comprise a central collagen-like block and two oppositely charged N-/C-terminal blocks, which display inherent incompetency of homotrimer formation. The favorable electrostatic attraction between two paired triblock peptides with complementary terminal charged sequences promptly leads to stable heterotrimers with controlled chain composition. The independence of the collagen-like block from the two terminal blocks endows this system with the adaptability to incorporate desired amino acid sequences while maintaining the heterotrimer structure. The triblock peptides provide a versatile and robust tool to mimic the composition and function of heterotrimer collagen and may have great potential in the design of innovative peptides mimicking heterogeneous proteins.
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Affiliation(s)
- Linyan Yao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- School of Life Science, Lanzhou University, Lanzhou 730000, China
| | - Biyang Ling
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Sha Zhao
- College of Chemistry and Molecular Engineering, Beijing NMR Center, Peking University, Beijing 100871, China
| | - Fansen Yu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Huanxiang Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Shenlin Wang
- College of Chemistry and Molecular Engineering, Beijing NMR Center, Peking University, Beijing 100871, China
| | - Jianxi Xiao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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4
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Mahara A, Ota S, Le HT, Shimizu K, Soni R, Kojima K, Hirano Y, Kakinoki S, Yamaoka T. Improving hemocompatibility of decellularized vascular tissue by structural modification of collagen fiber. Int J Biol Macromol 2024; 269:132040. [PMID: 38702003 DOI: 10.1016/j.ijbiomac.2024.132040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/06/2024]
Abstract
Decellularized vascular tissue has high potential as a tissue-engineered vascular graft because of its similarity to native vessels in terms of mechanical strength. However, exposed collagen on the tissue induces blood coagulation, and low hemocompatibility is a major obstacle to its vascular application. Here we report that freeze-drying and ethanol treatment effectively modify collagen fiber structure and drastically reduce blood coagulation on the graft surface without exogenous chemical modification. Decellularized carotid artery of ostrich was treated with freeze-drying and ethanol solution at concentrations ranging between 5 and 99.5 %. Collagen fiber distance in the graft was narrowed by freeze-drying, and the non-helical region increased by ethanol treatment. Although in vitro blood coagulation pattern was similar on the grafts, platelet adhesion on the grafts was largely suppressed by freeze-drying and ethanol treatments. Ex vivo blood circulation tests also indicated that the adsorption of platelets and Von Willebrand Factor was largely reduced to approximately 80 % by ethanol treatment. These results indicate that structural modification of collagen fibers in decellularized tissue reduces blood coagulation on the surface by inhibiting platelet adhesion.
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Affiliation(s)
- Atsushi Mahara
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan.
| | - Satoki Ota
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan; Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 565-8680, Japan
| | - Hue Thi Le
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan
| | - Kaito Shimizu
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan; Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 565-8680, Japan
| | - Raghav Soni
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan
| | - Kentaro Kojima
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan; Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 565-8680, Japan
| | - Yoshiaki Hirano
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 565-8680, Japan
| | - Sachiro Kakinoki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka 565-8680, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Kishibe-shim Machi, Suita, Osaka 564-8565, Japan.
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5
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Haffouz A, Elleuch H, Khemakhem B, Ben Amor I, Jerbi A, Gargouri J, Sahli E, Mhadhbi N, Ghalla H, Rezgui F, Gargouri A, HadjKacem B. Antiplatelet activity and toxicity profile of novel phosphonium salts derived from Michael reaction. Eur J Pharm Sci 2024; 194:106692. [PMID: 38181870 DOI: 10.1016/j.ejps.2024.106692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/30/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
In this work, five novel phosphonium salts derived from the Michael reaction were screened for their antiplatelet activity. Our findings revealed that compounds 2a, 2b, 2c, and 2d significantly inhibit platelet aggregation triggered by ADP or collagen (P < 0.001). Notably, compound 2c inhibited the arachidonic acid pathway (P < 0.001). Moreover, the selected compounds reduce CD62-P expression and inhibit GPIIb/IIIa activation. The interactions of the active compounds with their targets, ADP and collagen receptors, P2Y12 and GPVI respectively were investigated in silico using molecular docking studies. The results revealed a strong affinity of the active compounds for P2Y12 and GPVI. Additionally, cytotoxicity assays on platelets, erythrocytes, and human embryonic kidney HEK293 cells showed that compounds 2a, 2c and 2d were non-toxic even at high concentrations. In summary, our study shows that phosphonium salts can have strong antiplatelet power and suggests that compounds 2a, 2c and 2d could be promising antiplatelet agents for the management of cardiovascular diseases.
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Affiliation(s)
- Asma Haffouz
- Laboratory of Molecular Biotechnology of Eucaryotes, Centre of Biotechnology of Sfax, University of Sfax, B.P 1177, 3018, Sfax, Tunisia
| | - Haitham Elleuch
- Laboratory of Organic Chemistry, Faculty of Sciences, University Campus, 2092, University of Tunis El Manar, Tunis, Tunisia
| | - Bassem Khemakhem
- Laboratory of Plant Biotechnology, Sfax Faculty of Sciences, BP 1171, University of Sfax, 3038 Sfax, Tunisia
| | - Ikram Ben Amor
- Laboratory of Hematology (LR19SP04), Medical Faculty of Sfax. University of Sfax, Magida Boulila Avenue, 3029 Sfax, Tunisia
| | - Amira Jerbi
- Laboratory of Hematology (LR19SP04), Medical Faculty of Sfax. University of Sfax, Magida Boulila Avenue, 3029 Sfax, Tunisia
| | - Jalel Gargouri
- Laboratory of Hematology (LR19SP04), Medical Faculty of Sfax. University of Sfax, Magida Boulila Avenue, 3029 Sfax, Tunisia
| | - Emna Sahli
- Analytical service provider unit, Centre of Biotechnology of Sfax, University of Sfax, 3018, Sfax, Tunisia
| | - Noureddine Mhadhbi
- Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences, University of Sfax, BP 1171, 3000 Sfax, Tunisia; University of Monastir, Preparatory Institute for Engineering Studies of Monastir, 5019 Monastir, Tunisia
| | - Houcine Ghalla
- Quantum Physics and Statistic Laboratory, Faculty of Sciences, University of Monastir, Monastir, 5000, Tunisia
| | - Farhat Rezgui
- Laboratory of Organic Chemistry, Faculty of Sciences, University Campus, 2092, University of Tunis El Manar, Tunis, Tunisia
| | - Ali Gargouri
- Laboratory of Molecular Biotechnology of Eucaryotes, Centre of Biotechnology of Sfax, University of Sfax, B.P 1177, 3018, Sfax, Tunisia
| | - Basma HadjKacem
- Laboratory of Molecular Biotechnology of Eucaryotes, Centre of Biotechnology of Sfax, University of Sfax, B.P 1177, 3018, Sfax, Tunisia; Department of Life Sciences, Faculty of Sciences of Gafsa, University of Gafsa, Gafsa, Tunisia.
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6
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Xu KL, Mauck RL, Burdick JA. Modeling development using hydrogels. Development 2023; 150:dev201527. [PMID: 37387575 PMCID: PMC10323241 DOI: 10.1242/dev.201527] [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] [Indexed: 07/01/2023]
Abstract
The development of multicellular complex organisms relies on coordinated signaling from the microenvironment, including both biochemical and mechanical interactions. To better understand developmental biology, increasingly sophisticated in vitro systems are needed to mimic these complex extracellular features. In this Primer, we explore how engineered hydrogels can serve as in vitro culture platforms to present such signals in a controlled manner and include examples of how they have been used to advance our understanding of developmental biology.
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Affiliation(s)
- Karen L. Xu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Robert L. Mauck
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA 19104, USA
| | - Jason A. Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
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7
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Ge B, Wei M, Bao B, Pan Z, Elango J, Wu W. The Role of Integrin Receptor's α and β Subunits of Mouse Mesenchymal Stem Cells on the Interaction of Marine-Derived Blacktip Reef Shark ( Carcharhinus melanopterus) Skin Collagen. Int J Mol Sci 2023; 24:ijms24119110. [PMID: 37298062 DOI: 10.3390/ijms24119110] [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: 03/28/2023] [Revised: 04/25/2023] [Accepted: 05/10/2023] [Indexed: 06/12/2023] Open
Abstract
Marine collagen (MC) has recently attracted more attention in tissue engineering as a biomaterial substitute due to its significant role in cellular signaling mechanisms, especially in mesenchymal stem cells (MSCs). However, the actual signaling mechanism of MC in MSC growth, which is highly influenced by their molecular pattern, is poorly understood. Hence, we investigated the integrin receptors (α1β1, α2β1, α10β1, and α11β1) binding mechanism and proliferation of MCs (blacktip reef shark collagen (BSC) and blue shark collagen (SC)) compared to bovine collagen (BC) on MSCs behavior through functionalized collagen molecule probing for the first time. The results showed that BSC and SC had higher proliferation rates and accelerated scratch wound healing by increasing migratory rates of MSCs. Cell adhesion and spreading results demonstrated that MC had a better capacity to anchor MSCs and maintain cell morphology than controls. Living cell observations showed that BSC was gradually assembled by cells into the ECM network within 24 h. Interestingly, qRT-PCR and ELISA revealed that the proliferative effect of MC was triggered by interacting with specific integrin receptors such as α2β1, α10β1, and α11β1 of MSCs. Accordingly, BSC accelerated MSCs' growth, adhesion, shape, and spreading by interacting with specific integrin subunits (α2 and β1) and thereby triggering further signaling cascade mechanisms.
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Affiliation(s)
- Baolin Ge
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Mingjun Wei
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Bin Bao
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Zhilin Pan
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Jeevithan Elango
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- Department of Biomaterials Engineering, Faculty of Health Sciences, UCAM-Universidad Católica San Antonio de Murcia, Guadalupe, 30107 Murcia, Spain
| | - Wenhui Wu
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
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8
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Shah SB, Carlson CR, Lai K, Zhong Z, Marsico G, Lee KM, Félix Vélez NE, Abeles EB, Allam M, Hu T, Walter LD, Martin KE, Gandhi K, Butler SD, Puri R, McCleary-Wheeler AL, Tam W, Elemento O, Takata K, Steidl C, Scott DW, Fontan L, Ueno H, Cosgrove BD, Inghirami G, García AJ, Coskun AF, Koff JL, Melnick A, Singh A. Combinatorial treatment rescues tumour-microenvironment-mediated attenuation of MALT1 inhibitors in B-cell lymphomas. NATURE MATERIALS 2023; 22:511-523. [PMID: 36928381 PMCID: PMC10069918 DOI: 10.1038/s41563-023-01495-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 02/01/2023] [Indexed: 05/21/2023]
Abstract
Activated B-cell-like diffuse large B-cell lymphomas (ABC-DLBCLs) are characterized by constitutive activation of nuclear factor κB driven by the B-cell receptor (BCR) and Toll-like receptor (TLR) pathways. However, BCR-pathway-targeted therapies have limited impact on DLBCLs. Here we used >1,100 DLBCL patient samples to determine immune and extracellular matrix cues in the lymphoid tumour microenvironment (Ly-TME) and built representative synthetic-hydrogel-based B-cell-lymphoma organoids accordingly. We demonstrate that Ly-TME cellular and biophysical factors amplify the BCR-MYD88-TLR9 multiprotein supercomplex and induce cooperative signalling pathways in ABC-DLBCL cells, which reduce the efficacy of compounds targeting the BCR pathway members Bruton tyrosine kinase and mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT1). Combinatorial inhibition of multiple aberrant signalling pathways induced higher antitumour efficacy in lymphoid organoids and implanted ABC-DLBCL patient tumours in vivo. Our studies define the complex crosstalk between malignant ABC-DLBCL cells and Ly-TME, and provide rational combinatorial therapies that rescue Ly-TME-mediated attenuation of treatment response to MALT1 inhibitors.
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Affiliation(s)
- Shivem B Shah
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
- Columbia University, New York, USA
| | - Christopher R Carlson
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Kristine Lai
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Zhe Zhong
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Grazia Marsico
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Katherine M Lee
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | | | | | - Mayar Allam
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Thomas Hu
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Lauren D Walter
- Department of Molecular Biology & Genetics, Cornell University, Ithaca, NY, USA
| | - Karen E Martin
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Khanjan Gandhi
- Winship Cancer Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Scott D Butler
- College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Rishi Puri
- College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | | | - Wayne Tam
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Olivier Elemento
- Englander Institute for Precision Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Katsuyoshi Takata
- Centre for Lymphoid Cancer, British Columbia Cancer Center, Vancouver, British Columbia, Canada
- Niigata University, Niigata, Japan
| | - Christian Steidl
- Centre for Lymphoid Cancer, British Columbia Cancer Center, Vancouver, British Columbia, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - David W Scott
- Centre for Lymphoid Cancer, British Columbia Cancer Center, Vancouver, British Columbia, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lorena Fontan
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- Janssen Pharmaceuticals, Inc., Beerse, Belgium
| | - Hideki Ueno
- Department of Immunology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Benjamin D Cosgrove
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Ahmet F Coskun
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Jean L Koff
- Winship Cancer Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Ari Melnick
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Ankur Singh
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA.
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA.
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
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9
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Roth J, Hoop CL, Williams JK, Hayes R, Baum J. Probing the effect of glycosaminoglycan depletion on integrin interactions with collagen I fibrils in the native extracellular matrix environment. Protein Sci 2023; 32:e4508. [PMID: 36369695 PMCID: PMC9793976 DOI: 10.1002/pro.4508] [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: 01/10/2022] [Revised: 09/18/2022] [Accepted: 09/23/2022] [Indexed: 11/14/2022]
Abstract
Fibrillar collagen-integrin interactions in the extracellular matrix (ECM) regulate a multitude of cellular processes and cell signalling. Collagen I fibrils serve as the molecular scaffolding for connective tissues throughout the human body and are the most abundant protein building blocks in the ECM. The ECM environment is diverse, made up of several ECM proteins, enzymes, and proteoglycans. In particular, glycosaminoglycans (GAGs), anionic polysaccharides that decorate proteoglycans, become depleted in the ECM with natural aging and their mis-regulation has been linked to cancers and other diseases. The impact of GAG depletion in the ECM environment on collagen I protein interactions and on mechanical properties is not well understood. Here, we integrate ELISA protein binding assays with liquid high-resolution atomic force microscopy (AFM) to assess the effects of GAG depletion on the interaction of collagen I fibrils with the integrin α2I domain using separate rat tails. ELISA binding assays demonstrate that α2I preferentially binds to GAG-depleted collagen I fibrils in comparison to native fibrils. By amplitude modulated AFM in air and in solution, we find that GAG-depleted collagen I fibrils retain structural features of the native fibrils, including their characteristic D-banding pattern, a key structural motif. AFM fast force mapping in solution shows that GAG depletion reduces the stiffness of individual fibrils, lowering the indentation modulus by half compared to native fibrils. Together these results shed new light on how GAGs influence collagen I fibril-integrin interactions and may aid in strategies to treat diseases that result from GAG mis-regulation.
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Affiliation(s)
- Jonathan Roth
- Department of Chemistry and Chemical BiologyRutgers, The State University of New JerseyPiscatawayNew JerseyUSA
| | - Cody L. Hoop
- Department of Chemistry and Chemical BiologyRutgers, The State University of New JerseyPiscatawayNew JerseyUSA
| | - Jonathan K. Williams
- Department of Chemistry and Chemical BiologyRutgers, The State University of New JerseyPiscatawayNew JerseyUSA
- Drug Product DevelopmentBristol Myers SquibbNew BrunswickNew JerseyUSA
| | - Robert Hayes
- Department of Chemistry and Chemical BiologyRutgers, The State University of New JerseyPiscatawayNew JerseyUSA
| | - Jean Baum
- Department of Chemistry and Chemical BiologyRutgers, The State University of New JerseyPiscatawayNew JerseyUSA
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10
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Liu S, Li Y, Wang M, Ma Y, Wang J. Efficient co-expression of recombinant human fusion collagen with prolyl 4-hydroxylase from Bacillus anthracis in Escherichia coli. Biotechnol Appl Biochem 2022; 70:761-772. [PMID: 35959739 DOI: 10.1002/bab.2396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/31/2022] [Indexed: 11/09/2022]
Abstract
Collagen family members, the most abundant proteins in the human body, are widely used in biomedical fields and tissue engineering industries. However, the applications of collagen remain mostly relying on material derived from native tissues due to its extremely complex post-translational modifications like proline hydroxylation, which hinder the large-scale exogenous production of collagen. In the current study, we propose a novel prolyl hydroxylated recombinant human fusion collagen containing multiple native cell-interaction sites derived from human type Ⅰ and Ⅲ collagen with good biocompatibility and thermal stability. To obtain prolyl hydroxylated collagen, prolyl 4-hydroxylases from Bacillus anthracis, Arabidopsis thaliana, and Dactylosporangium sp. RH1 were co-expressed with collagen in Escherichia coli (E. coli), respectively. Among of which, prolyl 4-hydroxylase (P4H) from Bacillus anthracis showed the highest hydroxyl rate with 63.6%. Furthermore, a yield of hydroxylated collagen at 0.8 g/L was achieved by fed-batch fermentation in a 5 L fermenter with the productivity of 0.0267 g·L-1 ·h-1 . Compared with non-hydroxylated recombinant collagen, hydroxylated recombinant collagen showed significant improvements in thermal stability and biocompatibility. Taken this together, our studies provide a promising method for further development of collagen application in biomaterials engineering. A novel recombinant human fusion collagen with multiple motifs derived from both human type I and Ⅲ collagen exhibits good biocompatibility and thermal stability as higher molecular weight of ∼120kDa. By co-expression recombinant collagen and P4H genes in Escherichia coli, the maximum hyp in the recombinant collagen reached 63.6%, and a yield of hydroxylated collagen at 0.8 g/L was achieved by fed-batch fermentation in a 5 L fermenter. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Su Liu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Yanmei Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Meng Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Yi Ma
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.,Guangdong Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Jufang Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.,Guangdong Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
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11
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Zheng S, Hao T, Zhang L. Development of the Antithrombotic Peptide LEKNSTY Targeting the Collagen Surface: I. Design and Validation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7107-7113. [PMID: 35622988 DOI: 10.1021/acs.langmuir.2c00586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Exposed collagen on the diseased vessel wall is crucial for arterial thrombosis. The currently developed antithrombotic drugs mostly target blood components such as platelets and suffer from the risk of bleeding. Therefore, anticollagen therapy of covering the collagen surface was proposed as an alternative in our previous study, and an antithrombotic peptide LWWNSYY was designed and validated. However, its application was hindered due to the poor water solubility. In the present study, in order to develop a novel antithrombotic peptide with enhanced water solubility, redesigning of LWWNSYY to LEKNSTY using the EK pattern was proposed. Improved solubility was obtained for LEKNSTY. Moreover, the binding of LEKNSTY on the collagen surface was confirmed by molecular docking, molecular dynamics simulations, and experimental validation. A Kd of 0.91 ± 0.44 μM was observed. The effective inhibition of platelet adhesion on the collagen surface by LEKNSTY was demonstrated at an IC50 of 2.48 ± 0.59 μg/mL. Therefore, the successful design of the antithrombotic peptide LEKNSTY was confirmed, which would facilitate the research into the interface involving thrombus and the development of antithrombotic agents.
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Affiliation(s)
- Si Zheng
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Tanyi Hao
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Lin Zhang
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
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12
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Malcor JD, Mallein-Gerin F. Biomaterial functionalization with triple-helical peptides for tissue engineering. Acta Biomater 2022; 148:1-21. [PMID: 35675889 DOI: 10.1016/j.actbio.2022.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/09/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022]
Abstract
In the growing field of tissue engineering, providing cells in biomaterials with the adequate biological cues represents an increasingly important challenge. Yet, biomaterials with excellent mechanical properties often are often biologically inert to many cell types. To address this issue, researchers resort to functionalization, i.e. the surface modification of a biomaterial with active molecules or substances. Functionalization notably aims to replicate the native cellular microenvironment provided by the extracellular matrix, and in particular by collagen, its major component. As our understanding of biological processes regulating cell behaviour increases, functionalization with biomolecules binding cell surface receptors constitutes a promising strategy. Amongst these, triple-helical peptides (THPs) that reproduce the architectural and biological properties of collagen are especially attractive. Indeed, THPs containing binding sites from the native collagen sequence have successfully been used to guide cell response by establishing cell-biomaterial interactions. Notably, the GFOGER motif recognising the collagen-binding integrins is extensively employed as a cell adhesive peptide. In biomaterials, THPs efficiently improved cell adhesion, differentiation and function on biomaterials designed for tissue repair (especially for bone, cartilage, tendon and heart), vascular graft fabrication, wound dressing, drug delivery or immunomodulation. This review describes the key characteristics of THPs, their effect on cells when combined to biomaterials and their strong potential as biomimetic tools for regenerative medicine. STATEMENT OF SIGNIFICANCE: This review article describes how triple-helical peptides constitute efficient tools to improve cell-biomaterial interactions in tissue engineering. Triple helical peptides are bioactive molecules that mimic the architectural and biological properties of collagen. They have been successfully used to specifically recognize cell-surface receptors and provide cells seeded on biomaterials with controlled biological cues. Functionalization with triple-helical peptides has enabled researchers to improve cell function for regenerative medicine applications, such as tissue repair. However, despite encouraging results, this approach remains limited and under-exploited, and most functionalization strategies reported in the literature rely on biomolecules that are unable to address collagen-binding receptors. This review will assist researchers in selecting the correct tools to functionalize biomaterials in efforts to guide cellular response.
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Affiliation(s)
- Jean-Daniel Malcor
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France.
| | - Frédéric Mallein-Gerin
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France
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13
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Peterson CM, Helterbrand MR, Hartgerink JD. Covalent Capture of a Collagen Mimetic Peptide with an Integrin-Binding Motif. Biomacromolecules 2022; 23:2396-2403. [PMID: 35446536 DOI: 10.1021/acs.biomac.2c00155] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Collagen mimetic peptides (CMPs) are an excellent model to study the structural and biological properties of the extracellular matrix (ECM) due to ease of synthesis and variability in sequence. To ensure that synthetic materials accurately mimic the structure and function of natural collagen in the ECM, it is necessary to conserve the triple helix. However, CMP folding is subject to equilibrium, and frequently peptides exist in solution as both monomer and triple helix. Additionally, the stability of CMPs is highly dependent on peptide length and amino acid composition, leading to suboptimal performance. Here, we report the utility of covalent capture, a method to (a) direct the folding of a supramolecular triple helix and (b) form isopeptide bonds between the helix strands, in the design of an integrin-binding peptide with a GFOGER motif. Covalent capture effectively locked the triple helix and yielded a peptide with high thermal stability and a rapid folding rate. Compared to supramolecular triple helices bearing the same GFOGER-binding site, cell adhesion was substantially increased. In vitro assays using EDTA/Mg2+ and an anti-α2β1 antibody demonstrated the preservation of the high specificity of the binding event. This covalently captured integrin-binding peptide provides a template for the future design of bioactive ECM mimics, which can overcome limitations of supramolecular approaches for potential drug and biomaterial designs.
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Affiliation(s)
- Caroline M Peterson
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Maia R Helterbrand
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Jeffrey D Hartgerink
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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14
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Vitale M, Ligorio C, Smith IP, Richardson SM, Hoyland JA, Bella J. Incorporation of Natural and Recombinant Collagen Proteins within Fmoc-Based Self-Assembling Peptide Hydrogels. Gels 2022; 8:254. [PMID: 35621553 PMCID: PMC9140497 DOI: 10.3390/gels8050254] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 11/30/2022] Open
Abstract
Hydrogel biomaterials mimic the natural extracellular matrix through their nanofibrous ultrastructure and composition and provide an appropriate environment for cell-matrix and cell-cell interactions within their polymeric network. Hydrogels can be modified with different proteins, cytokines, or cell-adhesion motifs to control cell behavior and cell differentiation. Collagens are desirable and versatile proteins for hydrogel modification due to their abundance in the vertebrate extracellular matrix and their interactions with cell-surface receptors. Here, we report a quick, inexpensive and effective protocol for incorporation of natural, synthetic and recombinant collagens into Fmoc-based self-assembling peptide hydrogels. The hydrogels are modified through a diffusion protocol in which collagen molecules of different molecular sizes are successfully incorporated and retained over time. Characterization studies show that these collagens interact with the hydrogel fibers without affecting the overall mechanical properties of the composite hydrogels. Furthermore, the collagen molecules incorporated into the hydrogels are still biologically active and provide sites for adhesion and spreading of human fibrosarcoma cells through interaction with the α2β1 integrin. Our protocol can be used to incorporate different types of collagen molecules into peptide-based hydrogels without any prior chemical modification. These modified hydrogels could be used in studies where collagen-based substrates are required to differentiate and control the cell behavior. Our protocol can be easily adapted to the incorporation of other bioactive proteins and peptides into peptide-based hydrogels to modulate their characteristics and their interaction with different cell types.
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Affiliation(s)
| | | | | | | | | | - Jordi Bella
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester M13 9PT, UK; (M.V.); (C.L.); (I.P.S.); (S.M.R.); (J.A.H.)
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15
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Picker J, Lan Z, Arora S, Green M, Hahn M, Cosgriff-Hernandez E, Hook M. Prokaryotic Collagen-Like Proteins as Novel Biomaterials. Front Bioeng Biotechnol 2022; 10:840939. [PMID: 35372322 PMCID: PMC8968730 DOI: 10.3389/fbioe.2022.840939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/10/2022] [Indexed: 12/13/2022] Open
Abstract
Collagens are the major structural component in animal extracellular matrices and are critical signaling molecules in various cell-matrix interactions. Its unique triple helical structure is enabled by tripeptide Gly-X-Y repeats. Understanding of sequence requirements for animal-derived collagen led to the discovery of prokaryotic collagen-like protein in the early 2000s. These prokaryotic collagen-like proteins are structurally similar to mammalian collagens in many ways. However, unlike the challenges associated with recombinant expression of mammalian collagens, these prokaryotic collagen-like proteins can be readily expressed in E. coli and are amenable to genetic modification. In this review article, we will first discuss the properties of mammalian collagen and provide a comparative analysis of mammalian collagen and prokaryotic collagen-like proteins. We will then review the use of prokaryotic collagen-like proteins to both study the biology of conventional collagen and develop a new biomaterial platform. Finally, we will describe the application of Scl2 protein, a streptococcal collagen-like protein, in thromboresistant coating for cardiovascular devices, scaffolds for bone regeneration, chronic wound dressing and matrices for cartilage regeneration.
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Affiliation(s)
- Jonathan Picker
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
| | - Ziyang Lan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Srishtee Arora
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
| | - Mykel Green
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Mariah Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
| | | | - Magnus Hook
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
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16
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The Molecular Interaction of Collagen with Cell Receptors for Biological Function. Polymers (Basel) 2022; 14:polym14050876. [PMID: 35267698 PMCID: PMC8912536 DOI: 10.3390/polym14050876] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 01/25/2023] Open
Abstract
Collagen, an extracellular protein, covers the entire human body and has several important biological functions in normal physiology. Recently, collagen from non-human sources has attracted attention for therapeutic management and biomedical applications. In this regard, both land-based animals such as cow, pig, chicken, camel, and sheep, and marine-based resources such as fish, octopus, starfish, sea-cucumber, and jellyfish are widely used for collagen extraction. The extracted collagen is transformed into collagen peptides, hydrolysates, films, hydrogels, scaffolds, sponges and 3D matrix for food and biomedical applications. In addition, many strategic ideas are continuously emerging to develop innovative advanced collagen biomaterials. For this purpose, it is important to understand the fundamental perception of how collagen communicates with receptors of biological cells to trigger cell signaling pathways. Therefore, this review discloses the molecular interaction of collagen with cell receptor molecules to carry out cellular signaling in biological pathways. By understanding the actual mechanism, this review opens up several new concepts to carry out next level research in collagen biomaterials.
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17
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Mosquera MJ, Kim S, Bareja R, Fang Z, Cai S, Pan H, Asad M, Martin ML, Sigouros M, Rowdo FM, Ackermann S, Capuano J, Bernheim J, Cheung C, Doane A, Brady N, Singh R, Rickman DS, Prabhu V, Allen JE, Puca L, Coskun AF, Rubin MA, Beltran H, Mosquera JM, Elemento O, Singh A. Extracellular Matrix in Synthetic Hydrogel-Based Prostate Cancer Organoids Regulate Therapeutic Response to EZH2 and DRD2 Inhibitors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2100096. [PMID: 34676924 PMCID: PMC8820841 DOI: 10.1002/adma.202100096] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 08/09/2021] [Indexed: 05/30/2023]
Abstract
Following treatment with androgen receptor (AR) pathway inhibitors, ≈20% of prostate cancer patients progress by shedding their AR-dependence. These tumors undergo epigenetic reprogramming turning castration-resistant prostate cancer adenocarcinoma (CRPC-Adeno) into neuroendocrine prostate cancer (CRPC-NEPC). No targeted therapies are available for CRPC-NEPCs, and there are minimal organoid models to discover new therapeutic targets against these aggressive tumors. Here, using a combination of patient tumor proteomics, RNA sequencing, spatial-omics, and a synthetic hydrogel-based organoid, putative extracellular matrix (ECM) cues that regulate the phenotypic, transcriptomic, and epigenetic underpinnings of CRPC-NEPCs are defined. Short-term culture in tumor-expressed ECM differentially regulated DNA methylation and mobilized genes in CRPC-NEPCs. The ECM type distinctly regulates the response to small-molecule inhibitors of epigenetic targets and Dopamine Receptor D2 (DRD2), the latter being an understudied target in neuroendocrine tumors. In vivo patient-derived xenograft in immunocompromised mice showed strong anti-tumor response when treated with a DRD2 inhibitor. Finally, we demonstrate that therapeutic response in CRPC-NEPCs under drug-resistant ECM conditions can be overcome by first cellular reprogramming with epigenetic inhibitors, followed by DRD2 treatment. The synthetic organoids suggest the regulatory role of ECM in therapeutic response to targeted therapies in CRPC-NEPCs and enable the discovery of therapies to overcome resistance.
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Affiliation(s)
- Matthew J Mosquera
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Sungwoong Kim
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
| | - Rohan Bareja
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Zhou Fang
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
| | - Shuangyi Cai
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
| | - Heng Pan
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Muhammad Asad
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Maria Laura Martin
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Michael Sigouros
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Florencia M Rowdo
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Sarah Ackermann
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Jared Capuano
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Jacob Bernheim
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Cynthia Cheung
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Ashley Doane
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Nicholas Brady
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Richa Singh
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - David S Rickman
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | | | | | - Loredana Puca
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
| | - Ahmet F Coskun
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
| | - Mark A Rubin
- Department for BioMedical Research, University of Bern, Bern, 3012, Switzerland
| | - Himisha Beltran
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Juan Miguel Mosquera
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Olivier Elemento
- Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, 10021, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Ankur Singh
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY, 14850, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
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18
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Espinoza-Vergara J, Molina P, Walter M, Gulppi M, Vejar N, Melo F, Urzua M, Muñoz H, Zagal JH, Zhou X, Azocar MI, Paez MA. Effect of pH on the Electrochemical Behavior of Hydrogen Peroxide in the Presence of Pseudomonas aeruginosa. Front Bioeng Biotechnol 2021; 9:749057. [PMID: 34938720 PMCID: PMC8685425 DOI: 10.3389/fbioe.2021.749057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/10/2021] [Indexed: 11/13/2022] Open
Abstract
The influence of pH on the electrochemical behavior of hydrogen peroxide in the presence of Pseudomonas aeruginosa was investigated using electrochemical techniques. Cyclic and square wave voltammetry were used to monitor the enzymatic activity. A modified cobalt phthalocyanine (CoPc) carbon electrode (OPG), a known catalyst for reducing O2 to H2O2, was used to detect species resulting from the enzyme activity. The electrolyte was a sterilized aqueous medium containing Mueller-Hinton (MH) broth. The open-circuit potential (OCP) of the Pseudomonas aeruginosa culture in MH decreased rapidly with time, reaching a stable state after 4 h. Peculiarities in the E / I response were observed in voltammograms conducted in less than 4 h of exposure to the culture medium. Such particular E/I responses are due to the catalase's enzymatic action related to the conversion of hydrogen peroxide to oxygen, confirming the authors' previous findings related to the behavior of other catalase-positive microorganisms. The enzymatic activity exhibits maximum activity at pH 7.5, assessed by the potential at which oxygen is reduced to hydrogen peroxide. At higher or lower pHs, the oxygen reduction reaction (ORR) occurs at higher overpotentials, i.e., at more negative potentials. In addition, and to assess the influence of bacterial adhesion on the electrochemical behavior, measurements of the bacterial-substrate metal interaction were performed at different pH using atomic force microscopy.
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Affiliation(s)
- Javier Espinoza-Vergara
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.,Corrosion and Protection Center, Department of Materials, University of Manchester, Manchester, England, United Kingdom
| | - Paulo Molina
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Mariana Walter
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Miguel Gulppi
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Nelson Vejar
- Chilean Air Force, Aerospace Sciences Research and Development Centre (CIDCA), San Bernardo, Santiago, Chile
| | - Francisco Melo
- Departamento de Física, Facultad de Ciencias, Universidad de Santiago de Santiago de Chile, Avenida Ecuador, Santiago, Chile
| | - Marcela Urzua
- Facultad de Ciencias, Universidad de Chile, Santiago, Chile
| | - Hugo Muñoz
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - José H Zagal
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Xiaorong Zhou
- Corrosion and Protection Center, Department of Materials, University of Manchester, Manchester, England, United Kingdom
| | - Manuel I Azocar
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Maritza A Paez
- Departamento de Química de Los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
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19
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Ajeeb B, Acar H, Detamore MS. Chondroinductive Peptides for Cartilage Regeneration. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:745-765. [PMID: 34375146 DOI: 10.1089/ten.teb.2021.0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Inducing and maintaining a hyaline cartilage phenotype is the greatest challenge for cartilage regeneration. Synthetic chondroinductive biomaterials might be the answer to the unmet clinical need for a safe, stable, and cost-effective material capable of inducing true hyaline cartilage formation. The past decade witnessed an emergence of peptides to achieve chondrogenesis, as peptides have the advantages of versatility, high target specificity, minimized toxicity and immunogenicity, and ease of synthesis. Here, we review peptides as the basis for creating promising synthetic chondroinductive biomaterials for in situ scaffold-based cartilage regeneration. We provide a thorough review of peptides evaluated for cartilage regeneration while distinguishing between peptides reported to induce chondrogenesis independently, and peptides reported to act in synergy with other growth factors to induce cartilage regeneration. Additionally, we highlight that most peptide studies have been in vitro, and appropriate controls are not always present. A few rigorously-performed in vitro studies have proceeded to in vivo studies, but the peptides in those in vivo studies were mainly introduced via systemic, subcutaneous, or intraarticular injections, with a paucity of studies employing in situ defects with appropriate controls. Clinical translation of peptides will require the evaluation of these peptides in well-controlled in vivo cartilage defect studies. In the decade ahead, we may be poised to leverage peptides to design devices that are safe, reproducible, cost-efficient, and scalable biomaterials, which are themselves chondroinductive to achieve true hyaline cartilage regeneration without the need for growth factors and other small molecules.
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Affiliation(s)
- Boushra Ajeeb
- University of Oklahoma, 6187, Biomedical Engineering, Norman, Oklahoma, United States;
| | - Handan Acar
- University of Oklahoma, 6187, Biomedical Engineering, Norman, Oklahoma, United States;
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20
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Xu Y, Kirchner M. Collagen Mimetic Peptides. Bioengineering (Basel) 2021; 8:5. [PMID: 33466358 PMCID: PMC7824840 DOI: 10.3390/bioengineering8010005] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/24/2020] [Accepted: 12/31/2020] [Indexed: 12/20/2022] Open
Abstract
Since their first synthesis in the late 1960s, collagen mimetic peptides (CMPs) have been used as a molecular tool to study collagen, and as an approach to develop novel collagen mimetic biomaterials. Collagen, a major extracellular matrix (ECM) protein, plays vital roles in many physiological and pathogenic processes. Applications of CMPs have advanced our understanding of the structure and molecular properties of a collagen triple helix-the building block of collagen-and the interactions of collagen with important molecular ligands. The accumulating knowledge is also paving the way for developing novel CMPs for biomedical applications. Indeed, for the past 50 years, CMP research has been a fast-growing, far-reaching interdisciplinary field. The major development and achievement of CMPs were documented in a few detailed reviews around 2010. Here, we provided a brief overview of what we have learned about CMPs-their potential and their limitations. We focused on more recent developments in producing heterotrimeric CMPs, and CMPs that can form collagen-like higher order molecular assemblies. We also expanded the traditional view of CMPs to include larger designed peptides produced using recombinant systems. Studies using recombinant peptides have provided new insights on collagens and promoted progress in the development of collagen mimetic fibrillar self-assemblies.
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Affiliation(s)
- Yujia Xu
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Ave., New York, NY 10065, USA;
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Collagen Structure-Function Mapping Informs Applications for Regenerative Medicine. Bioengineering (Basel) 2020; 8:bioengineering8010003. [PMID: 33383610 PMCID: PMC7824244 DOI: 10.3390/bioengineering8010003] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/21/2022] Open
Abstract
Type I collagen, the predominant protein of vertebrates, assembles into fibrils that orchestrate the form and function of bone, tendon, skin, and other tissues. Collagen plays roles in hemostasis, wound healing, angiogenesis, and biomineralization, and its dysfunction contributes to fibrosis, atherosclerosis, cancer metastasis, and brittle bone disease. To elucidate the type I collagen structure-function relationship, we constructed a type I collagen fibril interactome, including its functional sites and disease-associated mutations. When projected onto an X-ray diffraction model of the native collagen microfibril, data revealed a matrix interaction domain that assumes structural roles including collagen assembly, crosslinking, proteoglycan (PG) binding, and mineralization, and the cell interaction domain supporting dynamic aspects of collagen biology such as hemostasis, tissue remodeling, and cell adhesion. Our type III collagen interactome corroborates this model. We propose that in quiescent tissues, the fibril projects a structural face; however, tissue injury releases blood into the collagenous stroma, triggering exposure of the fibrils' cell and ligand binding sites crucial for tissue remodeling and regeneration. Applications of our research include discovery of anti-fibrotic antibodies and elucidating their interactions with collagen, and using insights from our angiogenesis studies and collagen structure-function model to inform the design of super-angiogenic collagens and collagen mimetics.
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Abstract
Collagen XIII is a conserved transmembrane collagen mainly expressed in mesenchymal tissues. Previously, we have shown that collagen XIII modulates tissue development and homeostasis. Integrins are a family of receptors that mediate signals from the environment into the cells and vice versa. Integrin α11β1 is a collagen receptor known to recognize the GFOGER (O=hydroxyproline) sequence in collagens. Interestingly, collagen XIII and integrin α11β1 both have a role in the regulation of bone homeostasis. To study whether α11β1 is a receptor for collagen XIII, we utilized C2C12 cells transfected to express α11β1 as their only collagen receptor. The interaction between collagen XIII and integrin α11β1 was also confirmed by surface plasmon resonance and pull-down assays. We discovered that integrin α11β1 mediates cell adhesion to two collagenous motifs, namely GPKGER and GF(S)QGEK, that were shown to act as the recognition sites for the integrin α11-I domain. Furthermore, we studied the in vivo significance of the α11β1-collagen XIII interaction by crossbreeding α11 null mice (Itga11−/−) with mice overexpressing Col13a1 (Col13a1oe). When we evaluated the bone morphology by microcomputed tomography, Col13a1oe mice had a drastic bone overgrowth followed by severe osteoporosis, whereas the double mutant mouse line showed a much milder bone phenotype. To conclude, our data identifies integrin α11β1 as a new collagen XIII receptor and demonstrates that this ligand-receptor pair has a role in the maintenance of bone homeostasis.
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Graney PL, Lai K, Post S, Brito I, Cyster J, Singh A. Organoid Polymer Functionality and Mode of Klebsiella Pneumoniae Membrane Antigen Presentation Regulates Ex Vivo Germinal Center Epigenetics in Young and Aged B Cells. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2001232. [PMID: 33692664 PMCID: PMC7939142 DOI: 10.1002/adfm.202001232] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Antibiotic-resistant bacteria are a major global health threat that continues to rise due to a lack of effective vaccines. Of concern are Klebsiella pneumoniae that fail to induce in vivo germinal center B cell responses, which facilitate antibody production to fight infection. Immunotherapies using antibodies targeting antibiotic-resistant bacteria are emerging as promising alternatives, however, they cannot be efficiently derived ex vivo, necessitating the need for immune technologies to develop therapeutics. Here, PEG-based immune organoids were developed to elucidate the effects of polymer end-point chemistry, integrin ligands, and mode of K. pneumoniae antigen presentation on germinal center-like B cell phenotype and epigenetics, to better define the lymph node microenvironment factors regulating ex vivo germinal center dynamics. Notably, PEG vinyl sulfone or acrylate failed to sustain primary immune cells, but functionalization with maleimide (PEG-4MAL) led to B cell expansion and germinal center-like induction. RNA sequencing analysis of lymph node stromal and germinal center B cells showed niche associated heterogeneity of integrin-related genes. Incorporation of niche-mimicking peptides revealed that collagen-1 promoted germinal center-like dynamics and epigenetics. PEG-4MAL organoids elucidated the impact of K. pneumoniae outer membrane-embedded protein antigen versus soluble antigen presentation on germinal centers and preserved the response across young and aged mice.
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Affiliation(s)
- Pamela L. Graney
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY
| | - Kristine Lai
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY
| | - Sarah Post
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY
- Biological and Biomedical Sciences, Cornell University, Ithaca, NY
| | - Ilana Brito
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY
| | - Jason Cyster
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA
| | - Ankur Singh
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY
- Sibley School of Mechanical Engineering, Cornell University, Ithaca, NY
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA
- Corresponding author:
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Abstract
Microvasculature functions at the tissue and cell level, regulating local mass exchange of oxygen and nutrient-rich blood. While there has been considerable success in the biofabrication of large- and small-vessel replacements, functional microvasculature has been particularly challenging to engineer due to its size and complexity. Recently, three-dimensional bioprinting has expanded the possibilities of fabricating sophisticated microvascular systems by enabling precise spatiotemporal placement of cells and biomaterials based on computer-aided design. However, there are still significant challenges facing the development of printable biomaterials that promote robust formation and controlled 3D organization of microvascular networks. This review provides a thorough examination and critical evaluation of contemporary biomaterials and their specific roles in bioprinting microvasculature. We first provide an overview of bioprinting methods and techniques that enable the fabrication of microvessels. We then offer an in-depth critical analysis on the use of hydrogel bioinks for printing microvascularized constructs within the framework of current bioprinting modalities. We end with a review of recent applications of bioprinted microvasculature for disease modeling, drug testing, and tissue engineering, and conclude with an outlook on the challenges facing the evolution of biomaterials design for bioprinting microvasculature with physiological complexity.
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Affiliation(s)
- Ryan W. Barrs
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jia Jia
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Sophia E. Silver
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Michael Yost
- Department of Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Ying Mei
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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Michel JB. Phylogenic Determinants of Cardiovascular Frailty, Focus on Hemodynamics and Arterial Smooth Muscle Cells. Physiol Rev 2020; 100:1779-1837. [DOI: 10.1152/physrev.00022.2019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The evolution of the circulatory system from invertebrates to mammals has involved the passage from an open system to a closed in-parallel system via a closed in-series system, accompanying the increasing complexity and efficiency of life’s biological functions. The archaic heart enables pulsatile motion waves of hemolymph in invertebrates, and the in-series circulation in fish occurs with only an endothelium, whereas mural smooth muscle cells appear later. The present review focuses on evolution of the circulatory system. In particular, we address how and why this evolution took place from a closed, flowing, longitudinal conductance at low pressure to a flowing, highly pressurized and bifurcating arterial compartment. However, although arterial pressure was the latest acquired hemodynamic variable, the general teleonomy of the evolution of species is the differentiation of individual organ function, supported by specific fueling allowing and favoring partial metabolic autonomy. This was achieved via the establishment of an active contractile tone in resistance arteries, which permitted the regulation of blood supply to specific organ activities via its localized function-dependent inhibition (active vasodilation). The global resistance to viscous blood flow is the peripheral increase in frictional forces caused by the tonic change in arterial and arteriolar radius, which backscatter as systemic arterial blood pressure. Consequently, the arterial pressure gradient from circulating blood to the adventitial interstitium generates the unidirectional outward radial advective conductance of plasma solutes across the wall of conductance arteries. This hemodynamic evolution was accompanied by important changes in arterial wall structure, supported by smooth muscle cell functional plasticity, including contractility, matrix synthesis and proliferation, endocytosis and phagocytosis, etc. These adaptive phenotypic shifts are due to epigenetic regulation, mainly related to mechanotransduction. These paradigms actively participate in cardio-arterial pathologies such as atheroma, valve disease, heart failure, aneurysms, hypertension, and physiological aging.
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Kleiser S, Nyström A. Interplay between Cell-Surface Receptors and Extracellular Matrix in Skin. Biomolecules 2020; 10:E1170. [PMID: 32796709 PMCID: PMC7465455 DOI: 10.3390/biom10081170] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/01/2020] [Accepted: 08/05/2020] [Indexed: 12/12/2022] Open
Abstract
Skin consists of the epidermis and dermis, which are connected by a specialized basement membrane-the epidermal basement membrane. Both the epidermal basement membrane and the underlying interstitial extracellular matrix (ECM) created by dermal fibroblasts contain distinct network-forming macromolecules. These matrices play various roles in order to maintain skin homeostasis and integrity. Within this complex interplay of cells and matrices, cell surface receptors play essential roles not only for inside-out and outside-in signaling, but also for establishing mechanical and biochemical properties of skin. Already minor modulations of this multifactorial cross-talk can lead to severe and systemic diseases. In this review, major epidermal and dermal cell surface receptors will be addressed with respect to their interactions with matrix components as well as their roles in fibrotic, inflammatory or tumorigenic skin diseases.
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Affiliation(s)
- Svenja Kleiser
- Department of Dermatology, Faculty of Medicine and Medical Center, University of Freiburg, Hauptstraße 7, 79104 Freiburg, Germany
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104 Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, Faculty of Medicine and Medical Center, University of Freiburg, Hauptstraße 7, 79104 Freiburg, Germany
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Abstract
Collagen is the most abundant protein in humans and the major component of human skin. Collagen mimetic peptides (CMPs) can anneal to damaged collagen in vitro and in vivo. A duplex of CMPs was envisioned as a macromolecular mimic for damaged collagen. The duplex was synthesized on a solid support from the amino groups of a lysine residue and by using olefin metathesis to link the N termini. The resulting cyclic peptide, which is a monomer in solution, binds to CMPs to form a triple helix. Among these, CMPs that are engineered to avoid the formation of homotrimers but preorganized to adopt the conformation of a collagen strand exhibit enhanced association. Thus, this cyclic peptide enables the assessment of CMPs for utility in annealing to damaged collagen. Such CMPs have potential use in the diagnosis and treatment of fibrotic diseases and wounds.
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Affiliation(s)
| | - I Caglar Tanrikulu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jesús M Dones
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ronald T Raines
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Clark AY, Martin KE, García JR, Johnson CT, Theriault HS, Han WM, Zhou DW, Botchwey EA, García AJ. Integrin-specific hydrogels modulate transplanted human bone marrow-derived mesenchymal stem cell survival, engraftment, and reparative activities. Nat Commun 2020; 11:114. [PMID: 31913286 PMCID: PMC6949269 DOI: 10.1038/s41467-019-14000-9] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/10/2019] [Indexed: 12/28/2022] Open
Abstract
Stem cell therapies are limited by poor cell survival and engraftment. A hurdle to the use of materials for cell delivery is the lack of understanding of material properties that govern transplanted stem cell functionality. Here, we show that synthetic hydrogels presenting integrin-specific peptides enhance the survival, persistence, and osteo-reparative functions of human bone marrow-derived mesenchymal stem cells (hMSCs) transplanted in murine bone defects. Integrin-specific hydrogels regulate hMSC adhesion, paracrine signaling, and osteoblastic differentiation in vitro. Hydrogels presenting GFOGER, a peptide targeting α2β1 integrin, prolong hMSC survival and engraftment in a segmental bone defect and result in improved bone repair compared to other peptides. Integrin-specific hydrogels have diverse pleiotropic effects on hMSC reparative activities, modulating in vitro cytokine secretion and in vivo gene expression for effectors associated with inflammation, vascularization, and bone formation. These results demonstrate that integrin-specific hydrogels improve tissue healing by directing hMSC survival, engraftment, and reparative activities.
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Affiliation(s)
- Amy Y Clark
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Karen E Martin
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - José R García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Christopher T Johnson
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Tech and Emory, Atlanta, GA, 30332, USA
| | - Hannah S Theriault
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Tech and Emory, Atlanta, GA, 30332, USA
| | - Woojin M Han
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Dennis W Zhou
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Tech and Emory, Atlanta, GA, 30332, USA
| | - Edward A Botchwey
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Coulter Department of Biomedical Engineering, Georgia Tech and Emory, Atlanta, GA, 30332, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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29
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Role of prolyl hydroxylation in the molecular interactions of collagens. Essays Biochem 2019; 63:325-335. [PMID: 31350381 PMCID: PMC6744578 DOI: 10.1042/ebc20180053] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/25/2019] [Accepted: 07/01/2019] [Indexed: 12/12/2022]
Abstract
Co- and post-translational hydroxylation of proline residues is critical for the stability of the triple helical collagen structure. In this review, we summarise the biology of collagen prolyl 4-hydroxylases and collagen prolyl 3-hydroxylases, the enzymes responsible for proline hydroxylation. Furthermore, we describe the potential roles of hydroxyproline residues in the complex interplay between collagens and other proteins, especially integrin and discoidin domain receptor type cell adhesion receptors. Qualitative and quantitative regulation of collagen hydroxylation may have remarkable effects on the properties of the extracellular matrix and consequently on the cell behaviour.
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30
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Hoop CL, Kemraj AP, Wang B, Gahlawat S, Godesky M, Zhu J, Warren HR, Case DA, Shreiber DI, Baum J. Molecular underpinnings of integrin binding to collagen-mimetic peptides containing vascular Ehlers-Danlos syndrome-associated substitutions. J Biol Chem 2019; 294:14442-14453. [PMID: 31406019 DOI: 10.1074/jbc.ra119.009685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/06/2019] [Indexed: 11/06/2022] Open
Abstract
Collagens carry out critical extracellular matrix (ECM) functions by interacting with numerous cell receptors and ECM components. Single glycine substitutions in collagen III, which predominates in vascular walls, result in vascular Ehlers-Danlos syndrome (vEDS), leading to arterial, uterine, and intestinal rupture and an average life expectancy of <50 years. Collagen interactions with integrin α2β1 are vital for platelet adhesion and activation; however, how these interactions are impacted by vEDS-associated mutations and by specific amino acid substitutions is unclear. Here, we designed collagen-mimetic peptides (CMPs) with previously reported Gly → Xaa (Xaa = Ala, Arg, or Val) vEDS substitutions within a high-affinity integrin α2β1-binding motif, GROGER. We used these peptides to investigate, at atomic-level resolution, how these amino acid substitutions affect the collagen III-integrin α2β1 interaction. Using a multitiered approach combining biological adhesion assays, CD, NMR, and molecular dynamics (MD) simulations, we found that these substitutions differentially impede human mesenchymal stem cell spreading and integrin α2-inserted (α2I) domain binding to the CMPs and were associated with triple-helix destabilization. Although an Ala substitution locally destabilized hydrogen bonding and enhanced mobility, it did not significantly reduce the CMP-integrin interactions. MD simulations suggested that bulkier Gly → Xaa substitutions differentially disrupt the CMP-α2I interaction. The Gly → Arg substitution destabilized CMP-α2I side-chain interactions, and the Gly → Val change broke the essential Mg2+ coordination. The relationship between the loss of functional binding and the type of vEDS substitution provides a foundation for developing potential therapies for managing collagen disorders.
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Affiliation(s)
- Cody L Hoop
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Allysa P Kemraj
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Baifan Wang
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Sonal Gahlawat
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Madison Godesky
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Jie Zhu
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Haley R Warren
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - David A Case
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - David I Shreiber
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
| | - Jean Baum
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854
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Role of Platelet Glycoprotein VI and Tyrosine Kinase Syk in Thrombus Formation on Collagen-Like Surfaces. Int J Mol Sci 2019; 20:ijms20112788. [PMID: 31181592 PMCID: PMC6600290 DOI: 10.3390/ijms20112788] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 01/20/2023] Open
Abstract
Platelet interaction with collagens, via von Willebrand factor, is a potent trigger of shear-dependent thrombus formation mediated by subsequent engagement of the signaling collagen receptor glycoprotein (GP)VI, enforced by integrin α2β1. Protein tyrosine kinase Syk is central in the GPVI-induced signaling pathway, leading to elevated cytosolic Ca2+. We aimed to determine the Syk-mediated thrombogenic activity of several collagen peptides and (fibrillar) type I and III collagens. High-shear perfusion of blood over microspots of these substances resulted in thrombus formation, which was assessed by eight parameters and was indicative of platelet adhesion, activation, aggregation, and contraction, which were affected by the Syk inhibitor PRT-060318. In platelet suspensions, only collagen peptides containing the consensus GPVI-activating sequence (GPO)n and Horm-type collagen evoked Syk-dependent Ca2+ rises. In whole blood under flow, Syk inhibition suppressed platelet activation and aggregation parameters for the collagen peptides with or without a (GPO)n sequence and for all of the collagens. Prediction models based on a regression analysis indicated a mixed role of GPVI in thrombus formation on fibrillar collagens, which was abolished by Syk inhibition. Together, these findings indicate that GPVI-dependent signaling through Syk supports platelet activation in thrombus formation on collagen-like structures regardless of the presence of a (GPO)n sequence.
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32
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Multi-cellular tumor spheroids formation of colorectal cancer cells on Gelatin/PLCL and Collagen/PLCL nanofibrous scaffolds. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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33
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Mahzoon S, Detamore MS. Chondroinductive Peptides: Drawing Inspirations from Cell–Matrix Interactions. TISSUE ENGINEERING PART B-REVIEWS 2019; 25:249-257. [DOI: 10.1089/ten.teb.2018.0003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Salma Mahzoon
- School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, Oklahoma
| | - Michael S. Detamore
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma
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34
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Nicol L, Morar P, Wang Y, Henriksen K, Sun S, Karsdal M, Smith R, Nagamani SCS, Shapiro J, Lee B, Orwoll E. Alterations in non-type I collagen biomarkers in osteogenesis imperfecta. Bone 2019; 120:70-74. [PMID: 30290234 DOI: 10.1016/j.bone.2018.09.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/10/2018] [Accepted: 09/27/2018] [Indexed: 02/06/2023]
Abstract
Osteogenesis imperfecta [1] is a rare disorder of connective tissue caused by abnormalities in the synthesis or processing of type I collagen. Type I collagen is the most abundant type of collagen and is expressed in almost all connective tissues. Given that type I collagen interacts with other collagens based in the extracellular matrix (ECM), we hypothesized changes in type I collagen in OI would result in perturbations in the homeostasis of other collagen types. We measured serum biomarkers of several non-type I collagens in patients with mild (type I) and moderate-to-severe (type III/IV) OI. Compared to controls, those with moderate-to severe OI had a higher mean level of the synthesis markers of collagen III (ProC3) (P = 0.02), and levels of collagen V (ProC5) (P = 0.07) were slightly, but not significantly, higher. Degradation markers of collage type IV (C4M2) (P = 0.04) and type VI (C6M) (P = 0.003) were also higher. In each case, a test for trend suggested levels were higher in moderate-to-severe OI, intermediate in mild OI, and lowest in controls (P = 0.06-0.002). These changes supports the hypothesis that mutations in type I collagen induce a widespread alteration in the ECM, and that the diverse clinical manifestations of OI reflect an extensive disruption in ECM biology.
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Affiliation(s)
- Lindsey Nicol
- Department of Pediatrics, Division of Endocrinology, Oregon Health & Science University, Portland, OR, United States of America.
| | - Patrick Morar
- George Fox University, Newberg, OR, United States of America
| | - Ying Wang
- Department of Medicine, Division of Biostatistics, Oregon Health & Science University, Portland, OR, United States of America
| | | | - Shu Sun
- Nordic Bioscience, Herlev, Denmark
| | | | - Rosamund Smith
- Lilly Research Laboratories, Indianapolis, IN, United States of America
| | - Sandesh C S Nagamani
- Department of Medicine, Division of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States of America
| | - Jay Shapiro
- Uniformed Services University of the Health Sciences, Dept. Endocrinology and Diabetes, Walter Reed National Military Medical Center, Bethesda, MD, United States of America
| | - Brendan Lee
- Department of Medicine, Division of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States of America
| | - Eric Orwoll
- Department of Medicine, Division of Endocrinology, Oregon Health & Science University, Portland, OR, United States of America
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35
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Zhu Y, Liu D, Wang X, He Y, Luan W, Qi F, Ding J. Polydopamine-mediated covalent functionalization of collagen on a titanium alloy to promote biocompatibility with soft tissues. J Mater Chem B 2019; 7:2019-2031. [PMID: 32254806 DOI: 10.1039/c8tb03379j] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The clinical success of a titanium (Ti) percutaneous implant requires the integration with soft tissues to form a biological seal, which effectively combats marsupialization, premigration and infection after implantation. However, the bioinert surface of Ti or its alloys prevents the material from sufficient biological sealing and limits the application of Ti or its alloys as percutaneous implants. In this study, we achieved a collagen coating to bioactivate the surface of Ti-6Al-4V. In order to enable covalent functionalization, we first deposited a polydopamine (PDA) coating on Ti-6Al-4V based on dopamine self-polymerization and then immobilized collagen chains on PDA. Compared with physical absorption, such a chemical bonding method through mussel-inspired chemistry showed better stability of the coating. Meanwhile, the cellular tests in vitro indicated that collagen functionalization on the Ti-6Al-4V surface showed better adhesion of human foreskin fibroblasts (HFFs) and human immortal keratinocytes (HaCaTs). The subcutaneous implantation tests in rats indicated that the collagen modification attenuated soft tissue response and improved tissue compatibility compared with either pure Ti-6Al-4V or merely PDA coated samples. The facile bioinspired approach enables a persistent modification of metals by macromolecules under aqueous environments, and the PDA-collagen coated titanium alloy is worthy of further investigation as a percutaneous implant.
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Affiliation(s)
- Yi Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
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36
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Using a collagen heterotrimer to screen for cation-π interactions to stabilize triple helices. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.10.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Zhu Q, Sun H, Yang D, Tighe S, Liu Y, Zhu Y, Hu M. Cellular Substrates for Cell-Based Tissue Engineering of Human Corneal Endothelial Cells. Int J Med Sci 2019; 16:1072-1077. [PMID: 31523168 PMCID: PMC6743271 DOI: 10.7150/ijms.34440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/21/2019] [Indexed: 12/15/2022] Open
Abstract
Corneal endothelial tissue engineering aims to find solutions for blindness due to endothelial dysfunction. A suitable combination of endothelial cells, substrates and environmental cues should be deployed for engineering functional endothelial tissues. This manuscript reviews up-to-date topics of corneal endothelial tissue engineering with special emphasis on biomaterial substrates and their properties, efficacy, and mechanisms of supporting functional endothelial cells in vitro.
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Affiliation(s)
- Qin Zhu
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province (Fourth Affiliated Hospital of Kunming Medical University); Yunnan Eye Institute; Key Laboratory of Yunnan Province for the Prevention and Treatment of ophthalmology (2017DG008); Provincial Innovation Team for Cataract and Ocular Fundus Disease (2017HC010); Expert Workstation of Yao Ke (2017IC064), Kunming 650021, China
| | - Hong Sun
- Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Dongmei Yang
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province (Fourth Affiliated Hospital of Kunming Medical University); Yunnan Eye Institute; Key Laboratory of Yunnan Province for the Prevention and Treatment of ophthalmology (2017DG008); Provincial Innovation Team for Cataract and Ocular Fundus Disease (2017HC010); Expert Workstation of Yao Ke (2017IC064), Kunming 650021, China
| | - Sean Tighe
- Tissue Tech, Inc., Ocular Surface Center, and Ocular Surface Research & Education Foundation, Miami, FL, 33173 USA
| | - Yongsong Liu
- Department of Ophthalmology, Yan' An Hospital of Kunming City, Kunming, 650051, China
| | - Yingting Zhu
- Tissue Tech, Inc., Ocular Surface Center, and Ocular Surface Research & Education Foundation, Miami, FL, 33173 USA
| | - Min Hu
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province (Fourth Affiliated Hospital of Kunming Medical University); Yunnan Eye Institute; Key Laboratory of Yunnan Province for the Prevention and Treatment of ophthalmology (2017DG008); Provincial Innovation Team for Cataract and Ocular Fundus Disease (2017HC010); Expert Workstation of Yao Ke (2017IC064), Kunming 650021, China
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Zhu J, Hoop CL, Case DA, Baum J. Cryptic binding sites become accessible through surface reconstruction of the type I collagen fibril. Sci Rep 2018; 8:16646. [PMID: 30413772 PMCID: PMC6226522 DOI: 10.1038/s41598-018-34616-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/12/2018] [Indexed: 01/08/2023] Open
Abstract
Collagen fibril interactions with cells and macromolecules in the extracellular matrix drive numerous cellular functions. Binding motifs for dozens of collagen-binding proteins have been determined on fully exposed collagen triple helical monomers. However, when the monomers are assembled into the functional collagen fibril, many binding motifs become inaccessible, and yet critical cellular processes occur. Here, we have developed an early stage atomic model of the smallest repeating unit of the type I collagen fibril at the fibril surface that provides a novel framework to address questions about these functionally necessary yet seemingly obstructed interactions. We use an integrative approach by combining molecular dynamics (MD) simulations with atomic force microscopy (AFM) experiments and show that reconstruction of the collagen monomers within the complex fibril play a critical role in collagen interactions. In particular, the fibril surface shows three major conformational changes, which allow cryptic binding sites, including an integrin motif involved in platelet aggregation, to be exposed. The observed dynamics and reconstruction of the fibril surface promote its role as a “smart fibril” to keep certain binding sites cryptic, and to allow accessibility of recognition domains when appropriate.
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Affiliation(s)
- Jie Zhu
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - Cody L Hoop
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - David A Case
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - Jean Baum
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA.
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Sivaraman K, Shanthi C. Matrikines for therapeutic and biomedical applications. Life Sci 2018; 214:22-33. [PMID: 30449450 DOI: 10.1016/j.lfs.2018.10.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 12/25/2022]
Abstract
Matrikines, peptides originating from the fragmentation of extracellular matrix proteins are identified to play important role in both health and disease. They possess biological activities, much different from their parent protein. Identification of such bioactive cryptic regions in the extracellular matrix proteins has attracted the researchers all over the world in the recent decade. These bioactive peptides could find use in preparation of biomaterials and tissue engineering applications. Matrikines identified in major extracellular matrix (ECM) proteins like collagen, elastin, fibronectin, and laminin are being extensively studied for use in tissue engineering and regenerative medicine. They are identified to modulate cellular activity like cell growth, proliferation, migration and may induce apoptosis. RGD, a well-known peptide identified in fibronectin with cell adhesive property is being investigated in designing biomaterials. Collagen hexapeptide GFOGER was found to promote cell adhesion and differentiation. Laminin also possesses regions with strong cell adhesion property. Recently, cell-penetrating peptides from elastin are used as a targeted delivery system for therapeutic drugs. The continued search for cryptic sequences in the extracellular matrix proteins along with advanced peptide coupling chemistries would lead to biomaterials with improved surface properties. This review article outlines the peptides derived from extracellular matrix and some of the possible applications of these peptides in therapeutics and tissue engineering applications.
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Affiliation(s)
- K Sivaraman
- School of Biosciences and Technology, VIT, Vellore 632014, Tamilnadu, India
| | - C Shanthi
- School of Biosciences and Technology, VIT, Vellore 632014, Tamilnadu, India.
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41
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Abbasian M, Mousavi E, Khalili M, Arab‐Bafrani Z. Using of keratin substrate for enrichment of HT29 colorectal cancer stem‐like cells. J Biomed Mater Res B Appl Biomater 2018; 107:1264-1271. [DOI: 10.1002/jbm.b.34219] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/08/2018] [Accepted: 08/02/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Mahdi Abbasian
- Metabolic Disorders Research CenterGolestan University of Medical Sciences Gorgan Iran
- Department of Biotechnology, College of AgricultureIsfahan University of Technology Isfahan Iran
| | - Elham Mousavi
- Department of Medical MicrobiologyFaculty of Medicine, Kerman University of Medical Sciences Kerman Iran
| | - Mohsen Khalili
- Medical Cellular and Molecular Research CenterGolestan University of Medical Sciences Gorgan Iran
| | - Zahra Arab‐Bafrani
- Metabolic Disorders Research CenterGolestan University of Medical Sciences Gorgan Iran
- Department of Biochemistry and Biophysics, Faculty of MedicineGolestan University of Medical Sciences Gorgan Iran
- Health technology Research CenterOxin Sabz Espadan Company, Esfahan university of Medical Sciences Esfahan Iran
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42
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Becerra-Bayona SM, Guiza-Arguello VR, Russell B, Höök M, Hahn MS. Influence of collagen-based integrin α 1 and α 2 mediated signaling on human mesenchymal stem cell osteogenesis in three dimensional contexts. J Biomed Mater Res A 2018; 106:2594-2604. [PMID: 29761640 PMCID: PMC7147932 DOI: 10.1002/jbm.a.36451] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/02/2018] [Accepted: 05/03/2018] [Indexed: 01/04/2023]
Abstract
Collagen I interactions with integrins α1 and α2 are known to support human mesenchymal stem cell (hMSC) osteogenesis. Nonetheless, elucidating the relative impact of specific integrin interactions has proven challenging, in part due to the complexity of native collagen. In the present work, we employed two collagen-mimetic proteins-Scl2-2 and Scl2-3- to compare the osteogenic effects of integrin α1 versus α2 signaling. Scl2-2 and Scl2-3 were both derived from Scl2-1, a triple helical protein lacking known cell adhesion, cytokine binding, and matrix metalloproteinase sites. However, Scl2-2 and Scl2-3 were each engineered to display distinct collagen-based cell adhesion motifs: GFPGER (binding integrins α1 and α2 ) or GFPGEN (binding only integrin α1 ), respectively. hMSCs were cultured within poly(ethylene glycol) (PEG) hydrogels containing either Scl2-2 or Scl2-3 for 2 weeks. PEG-Scl2-2 gels were associated with increased hMSC osterix expression, osteopontin production, and calcium deposition relative to PEG-Scl2-3 gels. These data indicate that integrin α2 signaling may have an increased osteogenic effect relative to integrin α1 . Since p38 is activated by integrin α2 but not by integrin α1 , hMSCs were further cultured in PEG-Scl2-2 hydrogels in the presence of a p38 inhibitor. Results suggest that p38 activity may play a key role in collagen-supported hMSC osteogenesis. This knowledge can be used toward the rational design of scaffolds which intrinsically promote hMSC osteogenesis. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2594-2604, 2018.
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Affiliation(s)
- Silvia M Becerra-Bayona
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
| | - Viviana R Guiza-Arguello
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
| | - Brooke Russell
- Institute of Biosciences and Technology, Texas A&M University System Health Science Center, Houston, Texas, 77030-3303
| | - Magnus Höök
- Institute of Biosciences and Technology, Texas A&M University System Health Science Center, Houston, Texas, 77030-3303
| | - Mariah S Hahn
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180
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43
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Watanabe K, Watanabe K, Watanabe Y, Fujioka D, Nakamura T, Nakamura K, Obata JE, Kugiyama K. Human soluble phospholipase A2 receptor is an inhibitor of the integrin-mediated cell migratory response to collagen-I. Am J Physiol Cell Physiol 2018; 315:C398-C408. [DOI: 10.1152/ajpcell.00239.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Murine membrane-bound phospholipase A2 receptor 1 (PLA2R) is shed and released into plasma in a soluble form that retains all of the extracellular domains. Relatively little is known about human PLA2R. This study examined whether human soluble PLA2R has biological functions and whether soluble PLA2R exists in human plasma. Here, we showed that human recombinant soluble PLA2R (rsPLA2R) bound to collagen-I and inhibited interaction of collagen-I with the extracellular domain of integrin β1 on the cell surface of human embryonic kidney 293 (HEK293) cells. As a result, rsPLA2R suppressed integrin β1-mediated migratory responses of HEK293 cells to collagen-I in Boyden chamber experiments. Inhibition of phosphorylation of FAK Tyr397 was also observed. Similar results were obtained with experiments using soluble PLA2R released from HEK293 cells transfected with a construct encoding human soluble PLA2R. rsPLA2R lacking the fibronectin-like type II (FNII) domain had no inhibitory effects on cell responses to collagen-I, suggesting an important role of the FNII domain in the interaction of rsPLA2R with collagen-I. In addition, rsPLA2R suppressed the migratory response to collagen-IV and binding of collagen-IV to the cell surface of human podocytes that endogenously express membrane-bound, full-length PLA2R. Immunoprecipitation and Western blotting showed the existence of immunoreactive PLA2R in human plasma. In conclusion, human recombinant soluble PLA2R inhibits integrin β1-mediated cell responses to collagens. Further studies are warranted to elucidate whether immunoreactive PLA2R in human plasma has the same properties as rsPLA2R.
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Affiliation(s)
- Kazunori Watanabe
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Kazuhiro Watanabe
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Yosuke Watanabe
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Daisuke Fujioka
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Takamitsu Nakamura
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Kazuto Nakamura
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Jun-ei Obata
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
| | - Kiyotaka Kugiyama
- Department of Internal Medicine II, University of Yamanashi, Faculty of Medicine, Chuo, Yamanashi, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
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44
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Casal JI, Bartolomé RA. RGD cadherins and α2β1 integrin in cancer metastasis: A dangerous liaison. Biochim Biophys Acta Rev Cancer 2018; 1869:321-332. [PMID: 29673969 DOI: 10.1016/j.bbcan.2018.04.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/13/2018] [Accepted: 04/14/2018] [Indexed: 12/24/2022]
Abstract
We propose a new cadherin family classification comprising epithelial cadherins (cadherin 17 [CDH17], cadherin 16, VE-cadherin, cadherin 6 and cadherin 20) containing RGD motifs within their sequences. Expression of some RGD cadherins is associated with aggressive forms of cancer during the late stages of metastasis, and CDH17 and VE-cadherin have emerged as critical actors in cancer metastasis. After binding to α2β1 integrin, these cadherins promote integrin β1 activation, and thereby cell adhesion, invasion and proliferation, in liver and lung metastasis. Activation of α2β1 integrin provokes an affinity increase for type IV collagen, a major component of the basement membrane and a critical partner for cell anchoring in liver and other metastatic organs. Activation of α2β1 integrin by RGD motifs breaks an old paradigm of integrin classification and supports an important role of this integrin in cancer metastasis. Recently, synthetic peptides containing the RGD motif of CDH17 elicited highly specific and selective antibodies that block the ability of CDH17 RGD to activate α2β1 integrin. These monoclonal antibodies inhibit metastatic colonization in orthotopic mouse models of liver and lung metastasis for colorectal cancer and melanoma, respectively. Hopefully, blocking the cadherin RGD ligand capacity will give us control over the integrin activity in solid tumors metastasis, paving the way for development of new agents of cancer treatment.
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Affiliation(s)
- J Ignacio Casal
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28039 Madrid, Spain.
| | - Rubén A Bartolomé
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28039 Madrid, Spain
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45
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Sipilä KH, Drushinin K, Rappu P, Jokinen J, Salminen TA, Salo AM, Käpylä J, Myllyharju J, Heino J. Proline hydroxylation in collagen supports integrin binding by two distinct mechanisms. J Biol Chem 2018; 293:7645-7658. [PMID: 29615493 DOI: 10.1074/jbc.ra118.002200] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/23/2018] [Indexed: 11/06/2022] Open
Abstract
Collagens are the most abundant extracellular matrix proteins in vertebrates and have a characteristic triple-helix structure. Hydroxylation of proline residues is critical for helix stability, and diminished prolyl hydroxylase activity causes wide-spread defects in connective tissues. Still, the role of proline hydroxylation in the binding of collagen receptors such as integrins is unclear. Here, we isolated skin collagen from genetically modified mice having reduced prolyl 4-hydroxylase activity. At room temperature, the reduced proline hydroxylation did not affect interactions with the recombinant integrin α2I domain, but at 37 °C, collagen hydroxylation correlated with the avidity of α2I domain binding. Of note, LC-MS/MS analysis of isolated skin collagens revealed no major changes in the hydroxyproline content of the main integrin-binding sites. Thus, the disrupted α2I domain binding at physiological temperatures was most likely due to structural destabilization of the collagenous helix. Integrin α2I binding to the triple-helical GFPGER motif was slightly weaker than to GFOGER (O = hydroxyproline). This phenomenon was more prominent when α1 integrin was tested. Integrin α1β1 expressed on CHO cells and recombinant α1I domain showed remarkably slower binding velocity and weaker avidity to GFPGER when compared with GFOGER. Structural modeling revealed the critical interaction between Arg-218 in α1I and the hydroxyproline residue in the integrin-binding motif. The role of Arg-218 was further validated by testing a variant R218D α1I domain in solid-phase binding assays. Thus, our results show that the lack of proline hydroxylation in collagen can affect integrin binding by a direct mechanism and via structural destabilization of the triple helix.
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Affiliation(s)
- Kalle H Sipilä
- From the Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Kati Drushinin
- the Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, FI-90014 Oulu, Finland, and
| | - Pekka Rappu
- From the Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Johanna Jokinen
- From the Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Tiina A Salminen
- the Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, FI-20520 Turku, Finland
| | - Antti M Salo
- the Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, FI-90014 Oulu, Finland, and
| | - Jarmo Käpylä
- From the Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Johanna Myllyharju
- the Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, FI-90014 Oulu, Finland, and
| | - Jyrki Heino
- From the Department of Biochemistry, University of Turku, FI-20014 Turku, Finland,
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46
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Application of Synthetic Polymeric Scaffolds in Breast Cancer 3D Tissue Cultures and Animal Tumor Models. Int J Biomater 2017; 2017:8074890. [PMID: 29599800 PMCID: PMC5828246 DOI: 10.1155/2017/8074890] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/22/2017] [Indexed: 12/16/2022] Open
Abstract
Preparation of three-dimensional (3D) porous scaffolds from synthetic polymers is a challenge to most laboratories conducting biomedical research. Here, we present a handy and cost-effective method to fabricate polymeric hydrogel and porous scaffolds using poly(lactic-co-glycolic) acid (PLGA) or polycaprolactone (PCL). Breast cancer cells grown on 3D polymeric scaffolds exhibited distinct survival, morphology, and proliferation compared to those on 2D polymeric surfaces. Mammary epithelial cells cultured on PLGA- or PCL-coated slides expressed extracellular matrix (ECM) proteins and their receptors. Estrogen receptor- (ER-) positive T47D breast cancer cells are less sensitive to 4-hydroxytamoxifen (4-HT) treatment when cultured on the 3D porous scaffolds than in 2D cultures. Finally, cancer cell-laden polymeric scaffolds support consistent tumor formation in animals and biomarker expression as seen in human native tumors. Our data suggest that the porous synthetic polymer scaffolds satisfy the basic requirements for 3D tissue cultures both in vitro and in vivo. The scaffolding technology has appealing potentials to be applied in anticancer drug screening for a better control of the progression of human cancers.
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47
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Banerjee J, Azevedo HS. Crafting of functional biomaterials by directed molecular self-assembly of triple helical peptide building blocks. Interface Focus 2017; 7:20160138. [PMID: 29147553 PMCID: PMC5665793 DOI: 10.1098/rsfs.2016.0138] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Collagen is the most abundant extracellular matrix protein in the body and has widespread use in biomedical research, as well as in clinics. In addition to difficulties in the production of recombinant collagen due to its high non-natural imino acid content, animal-derived collagen imposes several major drawbacks-variability in composition, immunogenicity, pathogenicity and difficulty in sequence modification-that may limit its use in the practical scenario. However, in recent years, scientists have shifted their attention towards developing synthetic collagen-like materials from simple collagen model triple helical peptides to eliminate the potential drawbacks. For this purpose, it is highly desirable to develop programmable self-assembling strategies that will initiate the hierarchical self-assembly of short peptides into large-scale macromolecular assemblies with recommendable bioactivity. Herein, we tried to elaborate our understanding related to the strategies that have been adopted by few research groups to trigger self-assembly in the triple helical peptide system producing fascinating supramolecular structures. We have also touched upon the major epitopes within collagen that can be incorporated into collagen mimetic peptides for promoting bioactivity.
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Affiliation(s)
| | - Helena S. Azevedo
- School of Engineering and Material Science, Institute of Bioengineering, University of London, Queen Mary, Mile End Road, London E1 4NS, UK
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48
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Hoop CL, Zhu J, Nunes AM, Case DA, Baum J. Revealing Accessibility of Cryptic Protein Binding Sites within the Functional Collagen Fibril. Biomolecules 2017; 7:biom7040076. [PMID: 29104255 PMCID: PMC5745458 DOI: 10.3390/biom7040076] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/23/2017] [Accepted: 10/27/2017] [Indexed: 11/16/2022] Open
Abstract
Fibrillar collagens are the most abundant proteins in the extracellular matrix. Not only do they provide structural integrity to all of the connective tissues in the human body, but also their interactions with multiple cell receptors and other matrix molecules are essential to cell functions, such as growth, repair, and cell adhesion. Although specific binding sequences of several receptors have been determined along the collagen monomer, processes by which collagen binding partners recognize their binding sites in the collagen fibril, and the critical driving interactions, are poorly understood. The complex molecular assembly of bundled triple helices within the collagen fibril makes essential ligand binding sites cryptic or hidden from the molecular surface. Yet, critical biological processes that require collagen ligands to have access to interaction sites still occur. In this contribution, we will discuss the molecular packing of the collagen I fibril from the perspective of how collagen ligands access their known binding regions within the fibril, and we will present our analysis of binding site accessibility from the fibril surface. Understanding the basis of these interactions at the atomic level sets the stage for developing drug targets against debilitating collagen diseases and using collagen as drug delivery systems and new biomaterials.
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Affiliation(s)
- Cody L Hoop
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
| | - Jie Zhu
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
| | - Ana Monica Nunes
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
| | - David A Case
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
| | - Jean Baum
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
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49
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Li M, Li X, Zhuang Y, Flemington EK, Lin Z, Shan B. Induction of a novel isoform of the lncRNA HOTAIR in Claudin-low breast cancer cells attached to extracellular matrix. Mol Oncol 2017; 11:1698-1710. [PMID: 28846832 PMCID: PMC5709615 DOI: 10.1002/1878-0261.12133] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/27/2017] [Accepted: 08/11/2017] [Indexed: 01/05/2023] Open
Abstract
Elevated overexpression of the lncRNA HOTAIR mediates invasion and metastasis in breast cancer. In an apparent paradox, we observed low expression of HOTAIR in the invasive Claudin‐low MDA‐MB‐231 and Hs578T cells in two‐dimensional culture (2D). However, HOTAIR expression exhibited robust induction in laminin‐rich extracellular matrix‐based three‐dimensional organotypic culture (lrECM 3D) over that in 2D culture. Induction of HOTAIR required intact ECM signaling, namely integrin α2 and SRC kinase activity. Moreover, invasive growth was suppressed by HOTAIR‐specific siRNA. Induction of HOTAIR in lrECM 3D culture resulted from the activation of a novel isoform of HOTAIR (HOTAIR‐N) whose transcription is started from the first intron of the HOXC11 gene. The HOTAIR‐N promoter exhibited increased trimethylation of histone H3 lysine 4, a histone marker of active transcription, and binding of BRD4, a reader of transcriptionally active histone markers. Inhibition of BRD4 substantially reduced the expression of HOTAIR in lrECM 3D culture. In summary, our results indicate that HOTAIR expression is activated by BRD4 binding to a novel HOTAIR‐N promoter in Claudin‐low breast cancer cells that are attached to ECM. Induction of HOTAIR is required for invasive growth of Claudin‐low breast cancer cells in lrECM 3D culture.
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Affiliation(s)
- Miao Li
- Department of Microbiology and Parasitology, College of Basic Medical Sciences, China Medical University, Shenyang, China.,Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA
| | - Xi Li
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA.,Department of Sports Medicine and Joint Surgery, The People's Hospital of Liaoning Province, Shenyang, China
| | - Yan Zhuang
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Erik K Flemington
- Department of Pathology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Zhen Lin
- Department of Pathology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Bin Shan
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA
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Molica F, Stierlin FB, Fontana P, Kwak BR. Pannexin- and Connexin-Mediated Intercellular Communication in Platelet Function. Int J Mol Sci 2017; 18:E850. [PMID: 28420171 PMCID: PMC5412434 DOI: 10.3390/ijms18040850] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/06/2017] [Accepted: 04/12/2017] [Indexed: 12/11/2022] Open
Abstract
The three major blood cell types, i.e., platelets, erythrocytes and leukocytes, are all produced in the bone marrow. While red blood cells are the most numerous and white cells are the largest, platelets are small fragments and account for a minor part of blood volume. However, platelets display a crucial function by preventing bleeding. Upon vessel wall injury, platelets adhere to exposed extracellular matrix, become activated, and form a platelet plug preventing hemorrhagic events. However, when platelet activation is exacerbated, as in rupture of an atherosclerotic plaque, the same mechanism may lead to acute thrombosis causing major ischemic events such as myocardial infarction or stroke. In the past few years, major progress has been made in understanding of platelet function modulation. In this respect, membrane channels formed by connexins and/or pannexins are of particular interest. While it is still not completely understood whether connexins function as hemichannels or gap junction channels to inhibit platelet aggregation, there is clear-cut evidence for a specific implication of pannexin1 channels in collagen-induced aggregation. The focus of this review is to summarize current knowledge of the role of connexins and pannexins in platelet aggregation and to discuss possible pharmacological approaches along with their limitations and future perspectives for new potential therapies.
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Affiliation(s)
- Filippo Molica
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
| | - Florian B Stierlin
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
- Geneva Platelet Group, University of Geneva, 1211 Geneva, Switzerland.
| | - Pierre Fontana
- Geneva Platelet Group, University of Geneva, 1211 Geneva, Switzerland.
- Division of Angiology and Haemostasis, Geneva University Hospitals, 1211 Geneva, Switzerland.
| | - Brenda R Kwak
- Department of Pathology and Immunology, University of Geneva, 1211 Geneva, Switzerland.
- Department of Medical Specializations, Cardiology, University of Geneva, 1211 Geneva, Switzerland.
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