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Thyashan N, Ghimire ML, Lee S, Kim MJ. Exploring single-molecule interactions: heparin and FGF-1 proteins through solid-state nanopores. NANOSCALE 2024; 16:8352-8360. [PMID: 38563277 DOI: 10.1039/d4nr00274a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Detection and characterization of protein-protein interactions are essential for many cellular processes, such as cell growth, tissue repair, drug delivery, and other physiological functions. In our research, we have utilized emerging solid-state nanopore sensing technology, which is highly sensitive to better understand heparin and fibroblast growth factor 1 (FGF-1) protein interactions at a single-molecule level without any modifications. Understanding the structure and behavior of heparin-FGF-1 complexes at the single-molecule level is very important. An abnormality in their formation can lead to life-threatening conditions like tumor growth, fibrosis, and neurological disorders. Using a controlled dielectric breakdown pore fabrication approach, we have characterized individual heparin and FGF-1 (one of the 22 known FGFs in humans) proteins through the fabrication of 17 ± 1 nm nanopores. Compared to heparin, the positively charged heparin-binding domains of some FGF-1 proteins translocationally react with the pore walls, giving rise to a distinguishable second peak with higher current blockade. Additionally, we have confirmed that the dynamic FGF-1 is stabilized upon binding with heparin-FGF-1 at the single-molecule level. The larger current blockades from the complexes relative to individual heparin and the FGF-1 recorded during the translocation ensure the binding of heparin-FGF-1 proteins, forming binding complexes with higher excluded volumes. Taken together, we demonstrate that solid-state nanopores can be employed to investigate the properties of individual proteins and their complex interactions, potentially paving the way for innovative medical therapies and advancements.
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Affiliation(s)
- Navod Thyashan
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX, 75205, USA.
| | - Madhav L Ghimire
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX, 75205, USA.
| | - Sangyoup Lee
- Bionic Research Center, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea.
| | - Min Jun Kim
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX, 75205, USA.
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2
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Elgaabari A, Imatomi N, Kido H, Nakashima T, Okuda S, Manabe Y, Sawano S, Mizunoya W, Kaneko R, Tanaka S, Maeno T, Matsuyoshi Y, Seki M, Kuwakado S, Zushi K, Daneshvar N, Nakamura M, Suzuki T, Sunagawa K, Anderson JE, Allen RE, Tatsumi R. Age-related nitration/dysfunction of myogenic stem cell activator HGF. Aging Cell 2024; 23:e14041. [PMID: 37985931 PMCID: PMC10861216 DOI: 10.1111/acel.14041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/22/2023] Open
Abstract
Mechanical perturbation triggers activation of resident myogenic stem cells to enter the cell cycle through a cascade of events including hepatocyte growth factor (HGF) release from its extracellular tethering and the subsequent presentation to signaling-receptor c-met. Here, we show that with aging, extracellular HGF undergoes tyrosine-residue (Y) nitration and loses c-met binding, thereby disturbing muscle homeostasis. Biochemical studies demonstrated that nitration/dysfunction is specific to HGF among other major growth factors and is characterized by its locations at Y198 and Y250 in c-met-binding domains. Direct-immunofluorescence microscopy of lower hind limb muscles from three age groups of rat, provided direct in vivo evidence for age-related increases in nitration of ECM-bound HGF, preferentially stained for anti-nitrated Y198 and Y250-HGF mAbs (raised in-house) in fast IIa and IIx myofibers. Overall, findings highlight inhibitory impacts of HGF nitration on myogenic stem cell dynamics, pioneering a cogent discussion for better understanding age-related muscle atrophy and impaired regeneration with fibrosis (including sarcopenia and frailty).
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Affiliation(s)
- Alaa Elgaabari
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
- Department of Physiology, Faculty of Veterinary MedicineKafrelsheikh UniversityKafrelsheikhEgypt
| | - Nana Imatomi
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Hirochika Kido
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Takashi Nakashima
- Department of Bioscience and Biotechnology, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Shoko Okuda
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Yoshitaka Manabe
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Shoko Sawano
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
- Present address:
Department of Food and Life Science, School of Life and Environmental ScienceAzabu UniversitySagamiharaJapan
| | - Wataru Mizunoya
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
- Present address:
Department of Animal Science and Biotechnology, School of Veterinary MedicineAzabu UniversitySagamiharaJapan
| | - Ryuki Kaneko
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Sakiho Tanaka
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Takahiro Maeno
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Yuji Matsuyoshi
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Miyumi Seki
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - So Kuwakado
- Department of Orthopaedic Surgery, Faculty of Medical SciencesKyushu UniversityFukuokaJapan
| | - Kahona Zushi
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Nasibeh Daneshvar
- Department of Biological Sciences, Faculty of ScienceUniversity of ManitobaWinnipegManitobaCanada
| | - Mako Nakamura
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Takahiro Suzuki
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
| | - Kenji Sunagawa
- Department of Cardiovascular Medicine, Graduate School of MedicineKyushu UniversityFukuokaJapan
| | - Judy E. Anderson
- Department of Biological Sciences, Faculty of ScienceUniversity of ManitobaWinnipegManitobaCanada
| | - Ronald E. Allen
- The School of Animal and Comparative Biomedical SciencesUniversity of ArizonaTucsonArizonaUSA
| | - Ryuichi Tatsumi
- Department of Animal and Marine Bioresource Sciences, Graduate School of AgricultureKyushu UniversityFukuokaJapan
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3
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Zarei P, Ghasemi F. The Application of Artificial Intelligence and Drug Repositioning for the Identification of Fibroblast Growth Factor Receptor Inhibitors: A Review. Adv Biomed Res 2024; 13:9. [PMID: 38525398 PMCID: PMC10958741 DOI: 10.4103/abr.abr_170_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/24/2023] [Accepted: 09/03/2023] [Indexed: 03/26/2024] Open
Abstract
Artificial intelligence talks about modeling intelligent behavior through a computer with the least human involvement. Drug repositioning techniques based on artificial intelligence accelerate the research process and decrease the cost of experimental studies. Dysregulation of fibroblast growth factor (FGF) receptors as the tyrosine kinase family of receptors plays a vital role in a wide range of malignancies. Because of their functional significance, they were considered promising drug targets for the therapy of various cancers. This review has summarized small molecules capable of inhibiting FGF receptors that progressed using artificial intelligence and repositioning drugs examined in clinical trials associated with cancer therapy. This review is based on a literature search in PubMed, Web of Science, Scopus EMBASE, and Google Scholar databases to gather the necessary information in each chapter by employing keywords like artificial intelligence, computational drug design, drug repositioning, and FGF receptor inhibitors. To achieve this goal, a spacious literature review of human studies in these fields-published over the last 20 decades-was performed. According to published reports, nonselective FGF receptor inhibitors can be used for cancer management, and multitarget kinase inhibitors are the first drug class approved due to more advanced clinical studies. For example, AZD4547 and BGJ398 are gradually entering the consumption cycle and are good options as combined treatments. Artificial intelligence and drug repositioning methods can help preselect suitable drug targets more successfully for future inhibition of carcinogenicity.
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Affiliation(s)
- Parvin Zarei
- Department of Bioinformatics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fahimeh Ghasemi
- Department of Bioinformatics, Isfahan University of Medical Sciences, Isfahan, Iran
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4
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Nickle A, Ko S, Merrill AE. Fibroblast growth factor 2. Differentiation 2023:S0301-4681(23)00072-5. [PMID: 37858405 PMCID: PMC11009566 DOI: 10.1016/j.diff.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/20/2023] [Accepted: 10/05/2023] [Indexed: 10/21/2023]
Abstract
Fibroblast Growth Factor 2 (FGF2), also known as basic fibroblast growth factor, is a potent stimulator of growth and differentiation in multiple tissues. Its discovery traces back over 50 years ago when it was first isolated from bovine pituitary extracts due to its ability to stimulate fibroblast proliferation. Subsequent studies investigating the genomic structure of FGF2 identified multiple protein isoforms, categorized as the low molecular weight and high molecular weight FGF2. These isoforms arise from alternative translation initiation events and exhibit unique molecular and cellular functions. In this concise review, we aim to provide an overview of what is currently known about the structure, expression, and functions of the FGF2 isoforms within the contexts of development, homeostasis, and disease.
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Affiliation(s)
- Audrey Nickle
- Center for Craniofacial Molecular Biology, Department of Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, 90033, USA; Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Sebastian Ko
- Center for Craniofacial Molecular Biology, Department of Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, 90033, USA; Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Amy E Merrill
- Center for Craniofacial Molecular Biology, Department of Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, 90033, USA; Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA.
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5
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Lee KW, An YJ, Lee J, Jung YE, Ko IY, Jin J, Park JH, Lee WK, Cha K, Ko SSC, Lee JH, Yim HS. Expression and purification of intracrine human FGF 11 and study of its FGFR-dependent biological activity. J Microbiol 2022; 60:1086-1094. [PMID: 36318359 DOI: 10.1007/s12275-022-2406-3] [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: 09/08/2022] [Revised: 09/29/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Fibroblast growth factor 11 (FGF11) is one of intracrine FGFs (iFGFs), which function within cells. Unlike canonical FGFs, FGF11 remains intracellularly and plays biological roles in FGF receptor (FGFR)-independent manner. Here, we established an expression system of recombinant FGF11 proteins in E. coli and investigated whether the extracellular administration of FGF11 can activate cellular signaling. Human FGF11 has two isoforms, FGF11a and FGF11b, depending on the presence of nuclear localization sequences (NLSs) in the N-terminus. Because these two isoforms are unstable, we prepared an FGF11a-Mut by substituting three cysteine residues in the NLS with serine and FGF11b-ΔC with C-terminal truncation. The introduction of mutation in the NLS improved the solubility of FGF11 prepared from E. coli. Exogenous addition of FGF11b and FGF11b-ΔC to BALB3T3 increased cell proliferation, while FGF11a-Mut exerted no effect. FGF11b-ΔC showed higher cell proliferation activity and FGFR signaling than FGF11b. The cell-proliferating activities of FGF11b and FGF11b-ΔC were blocked by an FGFR1 inhibitor or a recombinant FGFR1, confirming the FGFR1-dependent extracellular activity of FGF11b. The analysis of circular dichroism suggested that the C-terminus of FGF11 has an α-helical structure, which may affect its interaction with FGFR1. These results suggest that the N-and C-terminus of recombinant FGF11 are involved in the activation of FGFR1. The above results provide novel insights into the function and mechanism of FGF11 that may aid the development of useful ligands for FGFR regulation.
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Affiliation(s)
- Kyeong Won Lee
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea
| | - Young Jun An
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea
| | - Janet Lee
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea
| | - Ye-Eun Jung
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - In Young Ko
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju, 28160, Republic of Korea
| | - Jonghwa Jin
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju, 28160, Republic of Korea
| | - Ji Hoon Park
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju, 28160, Republic of Korea
| | - Won Kyu Lee
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju, 28160, Republic of Korea
| | - Kiweon Cha
- EHLBio, Uiwang, 16006, Republic of Korea
| | - Sun-Shin Cha Ko
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jung-Hyun Lee
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea.
- Department of Marine Biotechnology, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea.
| | - Hyung-Soon Yim
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea.
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6
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Guthrie G, Vonderohe C, Burrin D. Fibroblast growth factor 15/19 expression, regulation, and function: An overview. Mol Cell Endocrinol 2022; 548:111617. [PMID: 35301051 PMCID: PMC9038700 DOI: 10.1016/j.mce.2022.111617] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/18/2022] [Indexed: 12/12/2022]
Abstract
Since the discovery of fibroblast growth factor (FGF)-19 over 20 years ago, our understanding of the peptide and its role in human biology has moved forward significantly. A member of a superfamily of paracrine growth factors regulating embryonic development, FGF19 is unique in that it is a dietary-responsive endocrine hormone linked with bile acid homeostasis, glucose and lipid metabolism, energy expenditure, and protein synthesis during the fed to fasted state. FGF19 achieves this through targeting multiple tissues and signaling pathways within those tissues. The diverse functional capabilities of FGF19 is due to the unique structural characteristics of the protein and its receptor binding in various cell types. This review will cover the current literature on the protein FGF19, its target receptors, and the biological pathways they target through unique signaling cascades.
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Affiliation(s)
- Greg Guthrie
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, United States
| | - Caitlin Vonderohe
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, United States
| | - Douglas Burrin
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, United States.
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7
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Mao S, Wang S, Niu Y, Wu J, Jia P, Zheng J, Dong Y. Induction of Cartilage Regeneration by Nanoparticles Loaded with Dentin Matrix Extracted Proteins. Tissue Eng Part A 2022; 28:807-817. [PMID: 35473319 DOI: 10.1089/ten.tea.2022.0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Due to the limited self-repair capacity of articular cartilage, tissue engineering has good application prospects for cartilage regeneration. Dentin contains several key growth factors involved in cartilage regeneration. However, it remains unknown whether dentin matrix extracted proteins (DMEP) can be utilized as a complex growth-factor mixture to induce cartilage regeneration. In this work, we extracted DMEP from human dentin and improved the content and activity of chondrogenic-related growth factors in DMEP by alkaline conditioning. Afterwards, mesoporous silica nanoparticles (MSNs) with particular physical and chemical properties were composed to selectively load and sustain the release of proteins in DMEP. MSN-DMEP promoted chondrogenic differentiation of rat bone marrow-derived mesenchymal stem cells with fewer growth factors than exogenously added transforming growth factor-β1 (TGF-β1). Therefore, MSN-DMEP may serve as a promising candidate for cartilage regeneration as an alternative to expensive synthetic growth factors.
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Affiliation(s)
- Sicong Mao
- Peking University School and Hospital of Stomatology, Department of Cariology and Endodontology, Beijing, China;
| | - Sainan Wang
- Peking University School and Hospital of Stomatology, Department of Cariology and Endodontology, 22 Zhongguancun Nandajie, Haidian District, Beijing, China, 100081;
| | - Yuting Niu
- Peking University School and Hospital of Stomatology, Department of Prosthodontics, Beijing, China;
| | - Jilin Wu
- Peking University School and Hospital of Stomatology, Department of Cariology and Endodontology, Beijing, China;
| | - Peipei Jia
- Peking University School and Hospital of Stomatology, Department of Cariology and Endodontology, Beijing, China;
| | - Jinxuan Zheng
- Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, GUangdong, China;
| | - Yanmei Dong
- Peking University School and Hospital of Stomatology, Department of Cariology and Endodontology, Beijing, China;
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8
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Improvement of FGF7 Thermal Stability by Introduction of Mutations in Close Vicinity to Disulfide Bond and Surface Salt Bridge. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10394-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractFibroblast Growth Factor 7 (FGF7), a growth factor specific to epithelial cells, has attracted attention as a therapeutic protein. However, FGF7 has a limitation in its use due to low protein stability. Here, the mutations were designed to increase the stability of FGF7 by analyzing its 3D structure and sequence of other FGFs. Palifermin, N-terminal truncated FGF7 is known to have improved stability and was used as control protein in our study. The K126 and K178 were substituted into glutamate to form salt bridge with the neighboring residue R175 respectively and A120C mutation was introduced in close vicinity to disulfide bond between C133 and C137. The data of Circular Dichroism (CD) showed that all mutant proteins tested had higher Tm value than Palifermin and Tm of A120C/K126E/K178E FGF7 mutant protein was 15.24 °C higher than that of Palifermin. The results of cell proliferation activity and soluble protein analyzed by sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS-PAGE) after 37 °C or 45 °C incubation exhibited that the stability of A120C mutant protein and A120C-including mutant proteins was improved. These results suggest that the mutation of amino acid in close vicinity to disulfide bond and the salt bridge at the surface of FGF7 enhanced thermal stability and make FGF7 more useful for pharmaceutical and cosmetical application.
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9
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Bu C, Jin L. NMR Characterization of the Interactions Between Glycosaminoglycans and Proteins. Front Mol Biosci 2021; 8:646808. [PMID: 33796549 PMCID: PMC8007983 DOI: 10.3389/fmolb.2021.646808] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Glycosaminoglycans (GAGs) constitute a considerable fraction of the glycoconjugates found on cellular membranes and in the extracellular matrix of virtually all mammalian tissues. The essential role of GAG-protein interactions in the regulation of physiological processes has been recognized for decades. However, the underlying molecular basis of these interactions has only emerged since 1990s. The binding specificity of GAGs is encoded in their primary structures, but ultimately depends on how their functional groups are presented to a protein in the three-dimensional space. This review focuses on the application of NMR spectroscopy on the characterization of the GAG-protein interactions. Examples of interpretation of the complex mechanism and characterization of structural motifs involved in the GAG-protein interactions are given. Selected families of GAG-binding proteins investigated using NMR are also described.
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Affiliation(s)
- Changkai Bu
- National Glycoengineering Research Center, Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Lan Jin
- National Glycoengineering Research Center, Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
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10
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Weant J, Eveleth DD, Subramaniam A, Jenkins-Eveleth J, Blaber M, Li L, Ornitz DM, Alimardanov A, Broadt T, Dong H, Vyas V, Yang X, Bradshaw RA. Regenerative responses of rabbit corneal endothelial cells to stimulation by fibroblast growth factor 1 (FGF1) derivatives, TTHX1001 and TTHX1114. Growth Factors 2021; 39:14-27. [PMID: 34879776 DOI: 10.1080/08977194.2021.2012468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Utilising rabbit corneal endothelial cells (CEC) in three different paradigms, two human FGF1 derivatives (TTHX1001 and TTHX1114), engineered to exhibit greater stability, were tested as proliferative agents. Primary CECs and mouse NIH 3T3 cells treated with the two FGF1 derivatives showed equivalent EC50 ranges (3.3-24 vs.1.9-16. ng/mL) and, in organ culture, chemically lesioned corneas regained half of the lost endothelial layer in three days after treatment with the FGF1 derivatives as compared to controls. In vivo, following cryolesioning, the CEC monolayer, as judged by specular microscopy, regenerated 10-11 days faster when treated with TTHX1001. Over two weeks, all treated eyes showed clearing of opacity about twice that of untreated controls. In all three rabbit models, both FGF1 derivatives were effective in inducing CEC proliferation over control conditions, supporting the prediction that these stabilised FGF1 derivatives can potentially regenerate corneal endothelial deficits in humans.
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Affiliation(s)
| | | | | | | | - Michael Blaber
- Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, USA
| | - Ling Li
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Asaf Alimardanov
- Therapeutics Development Branch, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Trevor Broadt
- Biopharmaceutical Development Program, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research (FNLCR), Leidos Biomedical Research Inc, Frederick, MD, USA
| | - Hui Dong
- Biopharmaceutical Development Program, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research (FNLCR), Leidos Biomedical Research Inc, Frederick, MD, USA
| | - Vinay Vyas
- Biopharmaceutical Development Program, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research (FNLCR), Leidos Biomedical Research Inc, Frederick, MD, USA
| | - Xiaoyi Yang
- Biopharmaceutical Development Program, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research (FNLCR), Leidos Biomedical Research Inc, Frederick, MD, USA
| | - Ralph A Bradshaw
- Trefoil Therapeutics, Inc, San Diego, CA, USA
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, USA
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11
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Bong SM, Bae SH, Song B, Gwak H, Yang SW, Kim S, Nam S, Rajalingam K, Oh SJ, Kim TW, Park S, Jang H, Lee BI. Regulation of mRNA export through API5 and nuclear FGF2 interaction. Nucleic Acids Res 2020; 48:6340-6352. [PMID: 32383752 PMCID: PMC7293033 DOI: 10.1093/nar/gkaa335] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 01/13/2023] Open
Abstract
API5 (APoptosis Inhibitor 5) and nuclear FGF2 (Fibroblast Growth Factor 2) are upregulated in various human cancers and are correlated with poor prognosis. Although their physical interaction has been identified, the function related to the resulting complex is unknown. Here, we determined the crystal structure of the API5–FGF2 complex and identified critical residues driving the protein interaction. These findings provided a structural basis for the nuclear localization of the FGF2 isoform lacking a canonical nuclear localization signal and identified a cryptic nuclear localization sequence in FGF2. The interaction between API5 and FGF2 was important for mRNA nuclear export through both the TREX and eIF4E/LRPPRC mRNA export complexes, thus regulating the export of bulk mRNA and specific mRNAs containing eIF4E sensitivity elements, such as c-MYC and cyclin D1. These data show the newly identified molecular function of API5 and nuclear FGF2, and provide a clue to understanding the dynamic regulation of mRNA export.
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Affiliation(s)
- Seoung Min Bong
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seung-Hyun Bae
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Bomin Song
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - HyeRan Gwak
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seung-Won Yang
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Sunshin Kim
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seungyoon Nam
- Department of Life Sciences, College of BioNano Technology and Department of Genome Medicine and Science, Graduate School of Medicine, Gachon University, Incheon 21565, Republic of Korea
| | | | - Se Jin Oh
- Department of Biomedical Sciences, Graduate School of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Tae Woo Kim
- Department of Biomedical Sciences, Graduate School of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - SangYoun Park
- School of Systems Biomedical Science, Soongsil University, Seoul 06978, Republic of Korea
| | - Hyonchol Jang
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
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12
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Atienza-Roca P, Kieser DC, Cui X, Bathish B, Ramaswamy Y, Hooper GJ, Clarkson AN, Rnjak-Kovacina J, Martens PJ, Wise LM, Woodfield TBF, Lim KS. Visible light mediated PVA-tyramine hydrogels for covalent incorporation and tailorable release of functional growth factors. Biomater Sci 2020; 8:5005-5019. [DOI: 10.1039/d0bm00603c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PVA-Tyr hydrogel facilitated covalent incorporation can control release of pristine growth factors while retaining their native bioactivity.
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Affiliation(s)
- Pau Atienza-Roca
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - David C. Kieser
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - Xiaolin Cui
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - Boushra Bathish
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - Yogambha Ramaswamy
- School of Biomedical Engineering
- University of Sydney
- Sydney 2006
- Australia
| | - Gary J. Hooper
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - Andrew N. Clarkson
- Department of Anatomy
- Brain Health Research Centre and Brain Research New Zealand
- University of Otago
- Dunedin 9054
- New Zealand
| | | | - Penny J. Martens
- Graduate School of Biomedical Engineering
- UNSW Sydney
- Sydney 2052
- Australia
| | - Lyn M. Wise
- Department of Pharmacology and Toxicology
- University of Otago
- New Zealand
| | - Tim B. F. Woodfield
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
| | - Khoon S. Lim
- Department of Orthopaedic Surgery
- University of Otago Christchurch
- Christchurch 8011
- New Zealand
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13
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Hall DP, Kovall RA. Structurally conserved binding motifs of transcriptional regulators to notch nuclear effector CSL. Exp Biol Med (Maywood) 2019; 244:1520-1529. [PMID: 31544502 DOI: 10.1177/1535370219877818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
This mini review discusses the protein complexes comprised of the universal Notch signaling transcription factor, CSL (CBF1/Su(H)/Lag-1), and its activating or repressing transcriptional coregulation partners. Many of these complex structures have been solved crystallographically as well as undergoing extensive binding studies with wild-type and mutant variants. Notch signaling is critically important in a large variety of basic biological processes: cell proliferation, differentiation, cell cycle control to name a few. Aberrant Notch thus remains a coveted target for pharmaceutical intervention. To that end, we provide a molecular-level summary of the similarities and differences in the Notch coregulator complexes that ultimately govern these processes. We highlight a conserved binding motif that multiple superficially unrelated proteins have adopted to become involved in Notch target gene regulation. As CSL-interacting small molecules begin to be characterized, this review will provide insight to potential binding sites and differential complex disruption. Impact statement Proper Notch signaling regulation is informed by many distinct protein complexes involving a single nuclear effector. A decade of research into these protein complexes yields multiple crystal structures and a wealth of binding data to guide drug development for Notch-related diseases – cancer, cardiovascular, development disorders.
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Affiliation(s)
- Daniel P Hall
- Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Rhett A Kovall
- Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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14
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Zinkle A, Mohammadi M. Structural Biology of the FGF7 Subfamily. Front Genet 2019; 10:102. [PMID: 30809251 PMCID: PMC6379346 DOI: 10.3389/fgene.2019.00102] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/29/2019] [Indexed: 11/13/2022] Open
Abstract
Mammalian fibroblast growth factor (FGF) signaling is intricately regulated via selective binding interactions between 18 FGF ligands and four FGF receptors (FGFR1–4), three of which (FGFR1–3) are expressed as either epithelial (“b”) or mesenchymal (“c”) splice isoforms. The FGF7 subfamily, consisting of FGF3, FGF7, FGF10, and FGF22, is unique among FGFs in that its members are secreted exclusively by the mesenchyme, and specifically activate the “b” isoforms of FGFR1 (FGFR1b) and FGFR2 (FGFR2b) present in the overlying epithelium. This unidirectional mesenchyme-to-epithelium signaling contributes to the development of essentially all organs, glands, and limbs. Structural analysis has shown that members of the FGF7 subfamily achieve their restricted specificity for FGFR1b/FGFR2b by engaging in specific contacts with two alternatively spliced loop regions in the immunoglobulin-like domain 3 (D3) of these receptors. Weak basal receptor-binding affinity further constrains the FGF7 subfamily’s specificity for FGFR1b/2b. In this review, we elaborate on the structural determinants of FGF7 subfamily receptor-binding specificity, and discuss how affinity differences among the four members for the heparin sulfate (HS) co-receptor contribute to their disparate biological activities.
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Affiliation(s)
- Allen Zinkle
- Department of Biochemistry and Molecular Pharmacology, New York University Langone Medical Center, New York, NY, United States
| | - Moosa Mohammadi
- Department of Biochemistry and Molecular Pharmacology, New York University Langone Medical Center, New York, NY, United States
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15
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Luo Y, Ye S, Li X, Lu W. Emerging Structure-Function Paradigm of Endocrine FGFs in Metabolic Diseases. Trends Pharmacol Sci 2019; 40:142-153. [PMID: 30616873 DOI: 10.1016/j.tips.2018.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/08/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022]
Abstract
Endocrine fibroblast growth factors (eFGFs) control pathways that are crucial for maintaining metabolic homeostasis of lipids, glucose, energy, bile acids, and minerals. Unlike the heparin-binding paracrine FGFs, eFGFs require a unique Klotho family protein to form a productive triad complex, but the structural and mechanistical details of this complex have remained obscure since the beginning of the eFGF field. However, recent breakthroughs in resolving the 3D structures of eFGF signaling complexes have now unveiled the atomic details of multivalent interactions among eFGF, FGFR, and Klotho. We provide here a timely review on the architecture and the structure-function relationships of these complexes, and highlight how the structural knowledge opens a new door to structure-based drug design against a repertoire of eFGF-associated metabolic diseases.
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Affiliation(s)
- Yongde Luo
- School of Pharmaceutical Science, Wenzhou Medical University, Center for Cancer and Metabolism Research, Institute for Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, China; Proteomics and Nanotechnology Laboratory, Center for Cancer and Stem Cell Biology, Institute of Biosciences and Technology, Texas A&M University Health Science Center, Houston, TX 77030, USA; Current address: Centeer BioTherapeutics Ltd Co., Houston, TX 77021, USA.
| | - Sheng Ye
- School of Life Science, Tianjin University, Tianjin 300072, China; Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Huangzhou, Zhejiang 310058, China.
| | - Xiaokun Li
- School of Pharmaceutical Science, Wenzhou Medical University, Center for Cancer and Metabolism Research, Institute for Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, China.
| | - Weiqin Lu
- Division of Gastroenterology and Hepatology, Department of Medicine, Stony Brook University School of Medicine, 101 Nicolls Road, Stony Brook, NY 11794, USA.
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16
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Farrell B, Breeze AL. Structure, activation and dysregulation of fibroblast growth factor receptor kinases: perspectives for clinical targeting. Biochem Soc Trans 2018; 46:1753-1770. [PMID: 30545934 PMCID: PMC6299260 DOI: 10.1042/bst20180004] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/17/2018] [Accepted: 09/20/2018] [Indexed: 01/22/2023]
Abstract
The receptor tyrosine kinase family of fibroblast growth factor receptors (FGFRs) play crucial roles in embryonic development, metabolism, tissue homeostasis and wound repair via stimulation of intracellular signalling cascades. As a consequence of FGFRs' influence on cell growth, proliferation and differentiation, FGFR signalling is frequently dysregulated in a host of human cancers, variously by means of overexpression, somatic point mutations and gene fusion events. Dysregulation of FGFRs is also the underlying cause of many developmental dysplasias such as hypochondroplasia and achondroplasia. Accordingly, FGFRs are attractive pharmaceutical targets, and multiple clinical trials are in progress for the treatment of various FGFR aberrations. To effectively target dysregulated receptors, a structural and mechanistic understanding of FGFR activation and regulation is required. Here, we review some of the key research findings from the last couple of decades and summarise the strategies being explored for therapeutic intervention.
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Affiliation(s)
- Brendan Farrell
- Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K
| | - Alexander L Breeze
- Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
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17
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Uciechowska-Kaczmarzyk U, Babik S, Zsila F, Bojarski KK, Beke-Somfai T, Samsonov SA. Molecular dynamics-based model of VEGF-A and its heparin interactions. J Mol Graph Model 2018; 82:157-166. [DOI: 10.1016/j.jmgm.2018.04.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 11/28/2022]
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18
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Brough D, Pelegrin P, Nickel W. An emerging case for membrane pore formation as a common mechanism for the unconventional secretion of FGF2 and IL-1β. J Cell Sci 2017; 130:3197-3202. [PMID: 28871048 DOI: 10.1242/jcs.204206] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 07/20/2017] [Indexed: 12/12/2022] Open
Abstract
Extracellular proteins with important signalling roles in processes, such as inflammation and angiogenesis, are known to employ unconventional routes of protein secretion. Although mechanisms of unconventional protein secretion are beginning to emerge, the precise molecular details have remained elusive for the majority of cargo proteins secreted by unconventional means. Recent findings suggest that for two examples of unconventionally secreted proteins, interleukin 1β (IL-1β) and fibroblast growth factor 2 (FGF2), the common molecular principle of pore formation may be shared. Under specific experimental conditions, secretion of IL-1β and FGF2 is triggered by phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2]-dependent formation of pores across the plasma membrane. However, the underlying mechanisms are different, with FGF2 known to directly interact with PI(4,5)P2, whereas in the case of IL-1β secretion, it is proposed that the N-terminal fragment of gasdermin D interacts with PI(4,5)P2 to form the pore. Thus, although implemented in different ways, these findings suggest that pore formation may be shared by the unconventional secretion mechanisms for FGF2 and IL-1β in at least some cases. In this Opinion article, we discuss the unconventional mechanisms of FGF2 and IL-1β release with a particular emphasis on recent discoveries suggesting the importance of pore formation on the plasma membrane.
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Affiliation(s)
- David Brough
- Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, M13 9PT, UK
| | - Pablo Pelegrin
- Grupo de Inflamación Molecular, Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria-Arrixaca (IMIB-Arrixaca), 30120 Murcia, Spain
| | - Walter Nickel
- Heidelberg University Biochemistry Center, Im Neuenheimer Feld 328, 69120 Heidelberg, Germany
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19
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Wang W, Gu Y, Miyamoto M, Hori H, Nagata N, Balamurugan AN, Touma M, Sakurai T, Inoue K. Effect of Basic Fibroblast Growth Factor on Insulin Secretion from Microencapsulated Pancreatic Islets: An In Vitro Study. Cell Transplant 2017. [DOI: 10.3727/000000001783986521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Microencapsulation of pancreatic islets represents a potentially effective method to prevent graft rejection in allotransplantation or xenotransplantation without the need of immunosuppression. Adequate insulin secretion and glucose responsiveness of microencapsulated pancreatic islets has been regarded as a prerequisite for successful transplantation. The microencapsulated pancreatic islets were respectively cultured in bFGF+ RPMI-1640 medium (bFGF+) or bFGF- RPMI-1640 medium (bFGF-) for 21 days. The functional activities of microencapsulated pancreatic islets were assessed by measuring basal insulin secretion and stimulated insulin release at different time points. The results revealed that microencapsulated pancreatic islets in the presence of bFGF demonstrated an increase in basal insulin secretion. Furthermore, microencapsulated pancreatic islets in the presence of bFGF demonstrated a marked stimulated insulin release and relative stability of stimulation indices (SI). The results in the perifusion study showed that microencapsulated pancreatic islets in the presence of bFGF maintained good glucose responsiveness over the course of culture period as well. These results indicate that bFGF has a beneficial effect on insulin secretion from microencapsulated pancreatic islets during in vitro culture. New strategies for preserving and improving function of microencapsulated pancreatic islets prior to transplantation may be developed by application of growth factors or other factors.
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Affiliation(s)
- Wenjing Wang
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Yuanjun Gu
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Masaaki Miyamoto
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Hiroshi Hori
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Natsuki Nagata
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - A. N. Balamurugan
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Maki Touma
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Tomonori Sakurai
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Kazutomo Inoue
- Department of Organ Reconstruction, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
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20
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Babik S, Samsonov SA, Pisabarro MT. Computational drill down on FGF1-heparin interactions through methodological evaluation. Glycoconj J 2017; 34:427-440. [PMID: 27858202 PMCID: PMC5487771 DOI: 10.1007/s10719-016-9745-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 01/22/2023]
Abstract
Glycosaminoglycans (GAGs) exhibit a key role in cellular communication processes through interactions with target proteins of the extracellular matrix (ECM). The sandwich-like interaction established between Fibroblast growth factor (FGF) and heparin (HE) represents quite a peculiar protein-GAG-protein system, which has been both structurally and functionally intensively studied. The molecular recognition characteristics of this system have been exploited in various computational studies in order to deepen understanding of GAG-protein interactions. Here, we drill down on the interactions established in this peculiar macromolecular complex by analyzing the applicability of docking techniques and molecular dynamics (MD)-based approaches, and we dissect the molecular recognition properties exhibited by FGF towards a series of HE derivatives. We examine the sensitivity of MM-GBSA free energy calculations in terms of receptor conformational space sampling and changes in the ligand structures. Furthermore, we investigate its predictive power in combination with other computational methods, namely the well-established Autodock3 (AD3) and dynamic molecular docking (DMD), a targeted MD-based docking method specifically developed to account for flexibility and solvent in computer simulations of protein-GAG systems. Our results show that a site-mapping approach can be effectively combined with AD3 and DMD calculations to accurately reproduce available experimental data and, furthermore, to determine specific GAG recognition patterns. This study deepens our understanding of the applicability of available theoretical approaches to the investigation of molecular recognition in protein-GAG systems.
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Affiliation(s)
- Sándor Babik
- Structural Bioinformatics, BIOTEC TU Dresden, Dresden, 01307, Germany
| | - Sergey A Samsonov
- Structural Bioinformatics, BIOTEC TU Dresden, Dresden, 01307, Germany
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21
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Neuroprotective effects of a novel peptide, FK18, under oxygen-glucose deprivation in SH-SY5Y cells and retinal ischemia in rats via the Akt pathway. Neurochem Int 2017; 108:78-90. [PMID: 28257830 DOI: 10.1016/j.neuint.2017.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 02/04/2017] [Accepted: 02/27/2017] [Indexed: 11/23/2022]
Abstract
Ischemic neuronal injury is associated with several life- and vision-threatening diseases. Neuroprotection is essential in the treatment of these diseases. Here, we identified and characterized a novel peptide, FK18, from basic fibroblast growth factor (bFGF). We further assessed the neuroprotective effects of this peptide and its potential mechanisms using the in vitro oxygen-glucose deprivation (OGD) model in SH-SY5Y cells and the in vivo retinal ischemia-reperfusion (I/R) injury model to mimic ischemic neuronal injury. Our results suggested that FK18 significantly increased the viability of and attenuated the apoptosis of SH-SY5Y cells. It also markedly alleviated I/R-induced retinal neuronal apoptosis, damage to retinal ganglion cells (RGCs), and morphological and functional damage to the retina. Moreover, FK18 increased Akt phosphorylation under both normoxic and OGD conditions, attenuated mitochondrial translocation of the proapoptotic protein Bad, up-regulated the expression of Bcl-2/Bax, and inhibited the release of cytochrome c from the mitochondria into the cytoplasm. These results suggested that FK18 is a novel neuroprotective agent that may serve as a prototype for neuroprotective drug development.
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22
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Zhao Y, Singh A, Xu Y, Zong C, Zhang F, Boons GJ, Liu J, Linhardt RJ, Woods RJ, Amster IJ. Gas-Phase Analysis of the Complex of Fibroblast GrowthFactor 1 with Heparan Sulfate: A Traveling Wave Ion Mobility Spectrometry (TWIMS) and Molecular Modeling Study. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:96-109. [PMID: 27663556 PMCID: PMC5177502 DOI: 10.1007/s13361-016-1496-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 08/26/2016] [Accepted: 08/30/2016] [Indexed: 05/10/2023]
Abstract
Fibroblast growth factors (FGFs) regulate several cellular developmental processes by interacting with cell surface heparan proteoglycans and transmembrane cell surface receptors (FGFR). The interaction of FGF with heparan sulfate (HS) is known to induce protein oligomerization, increase the affinity of FGF towards its receptor FGFR, promoting the formation of the HS-FGF-FGFR signaling complex. Although the role of HS in the signaling pathways is well recognized, the details of FGF oligomerization and formation of the ternary signaling complex are still not clear, with several conflicting models proposed in literature. Here, we examine the effect of size and sulfation pattern of HS upon FGF1 oligomerization, binding stoichiometry and conformational stability, through a combination of ion mobility (IM) and theoretical modeling approaches. Ion mobility-mass spectrometry (IMMS) of FGF1 in the presence of several HS fragments ranging from tetrasaccharide (dp4) to dodecasaccharide (dp12) in length was performed. A comparison of the binding stoichiometry of variably sulfated dp4 HS to FGF1 confirmed the significance of the previously known high-affinity binding motif in FGF1 dimerization, and demonstrated that certain tetrasaccharide-length fragments are also capable of inducing dimerization of FGF1. The degree of oligomerization was found to increase in the presence of dp12 HS, and a general lack of specificity for longer HS was observed. Additionally, collision cross-sections (CCSs) of several FGF1-HS complexes were calculated, and were found to be in close agreement with experimental results. Based on the (CCSs) a number of plausible binding modes of 2:1 and 3:1 FGF1-HS are proposed. Graphical Abstract ᅟ.
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Affiliation(s)
- Yuejie Zhao
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Arunima Singh
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Yongmei Xu
- Eshelman School of Pharmacy, Division of Chemical Biology and Medicinal Chemistry, University of North Carolina, Chapel Hill, NC, USA
| | - Chengli Zong
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Fuming Zhang
- Center for Biotechnology and Interdisciplinary Studies, Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Jian Liu
- Eshelman School of Pharmacy, Division of Chemical Biology and Medicinal Chemistry, University of North Carolina, Chapel Hill, NC, USA
| | - Robert J Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Robert J Woods
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
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23
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Xia X, Kumru OS, Blaber SI, Middaugh CR, Li L, Ornitz DM, Suh JM, Atkins AR, Downes M, Evans RM, Tenorio CA, Bienkiewicz E, Blaber M. An S116R Phosphorylation Site Mutation in Human Fibroblast Growth Factor-1 Differentially Affects Mitogenic and Glucose-Lowering Activities. J Pharm Sci 2016; 105:3507-3519. [PMID: 27773526 PMCID: PMC5310217 DOI: 10.1016/j.xphs.2016.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 09/04/2016] [Accepted: 09/09/2016] [Indexed: 11/17/2022]
Abstract
Fibroblast growth factor-1 (FGF-1), a potent human mitogen and insulin sensitizer, signals through both tyrosine kinase receptor-mediated autocrine/paracrine pathways as well as a nuclear intracrine pathway. Phosphorylation of FGF-1 at serine 116 (S116) has been proposed to regulate intracrine signaling. Position S116 is located within a ∼17 amino acid C-terminal loop that contains a rich set of functional determinants including heparin∖heparan sulfate affinity, thiol reactivity, nuclear localization, pharmacokinetics, functional half-life, nuclear ligand affinity, stability, and structural dynamics. Mutational targeting of specific functionality in this region without perturbing other functional determinants is a design challenge. S116R is a non-phosphorylatable variant present in bovine FGF-1 and other members of the human FGF family. We show that the S116R mutation in human FGF-1 is accommodated with no perturbation of biophysical or structural properties, and is therefore an attractive mutation with which to elucidate the functional role of phosphorylation. Characterization of S116R shows reduction in NIH 3T3 fibroblast mitogenic stimulation, increase in fibroblast growth factor receptor-1c activation, and prolonged duration of glucose lowering in ob/ob hyperglycemic mice. A novel FGF-1/fibroblast growth factor receptor-1c dimerization interaction combined with non-phosphorylatable intracrine signaling is hypothesized to be responsible for these observed functional effects.
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Affiliation(s)
- Xue Xia
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida 32306
| | - Ozan S Kumru
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 60047
| | - Sachiko I Blaber
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida 32306
| | - C Russell Middaugh
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 60047
| | - Ling Li
- Department of Molecular Biology and Pharmacology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - David M Ornitz
- Department of Molecular Biology and Pharmacology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Jae Myoung Suh
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037
| | - Annette R Atkins
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037
| | - Ronald M Evans
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037; Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, California 92037
| | - Connie A Tenorio
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida 32306
| | - Ewa Bienkiewicz
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida 32306
| | - Michael Blaber
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida 32306.
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24
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Lauriol J, Cabrera JR, Roy A, Keith K, Hough SM, Damilano F, Wang B, Segarra GC, Flessa ME, Miller LE, Das S, Bronson R, Lee KH, Kontaridis MI. Developmental SHP2 dysfunction underlies cardiac hypertrophy in Noonan syndrome with multiple lentigines. J Clin Invest 2016; 126:2989-3005. [PMID: 27348588 PMCID: PMC4966304 DOI: 10.1172/jci80396] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 05/09/2016] [Indexed: 11/17/2022] Open
Abstract
Hypertrophic cardiomyopathy is a common cause of mortality in congenital heart disease (CHD). Many gene abnormalities are associated with cardiac hypertrophy, but their function in cardiac development is not well understood. Loss-of-function mutations in PTPN11, which encodes the protein tyrosine phosphatase (PTP) SHP2, are implicated in CHD and cause Noonan syndrome with multiple lentigines (NSML), a condition that often presents with cardiac hypertrophic defects. Here, we found that NSML-associated hypertrophy stems from aberrant signaling mechanisms originating in developing endocardium. Trabeculation and valvular hyperplasia were diminished in hearts of embryonic mice expressing a human NSML-associated variant of SHP2, and these defects were recapitulated in mice expressing NSML-associated SHP2 specifically in endothelial, but not myocardial or neural crest, cells. In contrast, mice with myocardial- but not endothelial-specific NSML SHP2 expression developed ventricular septal defects, suggesting that NSML-associated mutations have both cell-autonomous and nonautonomous functions in cardiac development. However, only endothelial-specific expression of NSML-associated SHP2 induced adult-onset cardiac hypertrophy. Further, embryos expressing the NSML-associated SHP2 mutation exhibited aberrant AKT activity and decreased downstream forkhead box P1 (FOXP1)/FGF and NOTCH1/EPHB2 signaling, indicating that SHP2 is required for regulating reciprocal crosstalk between developing endocardium and myocardium. Together, our data provide functional and disease-based evidence that aberrant SHP2 signaling during cardiac development leads to CHD and adult-onset heart hypertrophy.
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Affiliation(s)
- Jessica Lauriol
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Janel R. Cabrera
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Ashbeel Roy
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Kimberly Keith
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Sara M. Hough
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Federico Damilano
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Bonnie Wang
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Gabriel C. Segarra
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Meaghan E. Flessa
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lauren E. Miller
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Saumya Das
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | | | - Kyu-Ho Lee
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Maria I. Kontaridis
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
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25
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Song G, Shao XX, Wu QP, Xu ZG, Liu YL, Guo ZY. Novel Bioluminescent Binding Assays for Ligand-Receptor Interaction Studies of the Fibroblast Growth Factor Family. PLoS One 2016; 11:e0159263. [PMID: 27414797 PMCID: PMC4944982 DOI: 10.1371/journal.pone.0159263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 06/29/2016] [Indexed: 12/22/2022] Open
Abstract
We recently developed novel bioluminescent binding assays for several protein/peptide hormones to study their interactions with receptors using the so far brightest NanoLuc reporter. To validate the novel bioluminescent binding assay using a variety of protein/peptide hormones, in the present work we applied it to the fibroblast growth factor (FGF) family using the prototype member FGF2 as an example. A fully active recombinant FGF2 retaining a unique exposed cysteine (Cys) residue was chemically conjugated with an engineered NanoLuc carrying a unique exposed Cys residue at the C-terminus via formation of an intermolecular disulfide linkage. The NanoLuc-conjugated FGF2 (FGF2-Luc) retained high binding affinity to the overexpressed FGFR1 and the endogenous FGF receptor with the calculated dissociation constants of 161 ± 21 pM (n = 3) and 25 ± 4 pM (n = 3), respectively. In competition binding assays using FGF2-Luc as a tracer, receptor-binding potencies of wild-type or mutant FGF2s were accurately quantified. Thus, FGF2-Luc represents a novel non-radioactive tracer for the quantitative measurement of ligand–receptor interactions in the FGF family. These data suggest that the novel bioluminescent binding assay can be applied to a variety of protein/peptide hormones for ligand–receptor interaction studies.
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Affiliation(s)
- Ge Song
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xiao-Xia Shao
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Qing-Ping Wu
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Zeng-Guang Xu
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Ya-Li Liu
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
- * E-mail: (ZYG); (YLL)
| | - Zhan-Yun Guo
- Research Center for Translational Medicine at East Hospital, College of Life Sciences and Technology, Tongji University, Shanghai, China
- * E-mail: (ZYG); (YLL)
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Wu ZS, Liu CF, Fu B, Chou RH, Yu C. Suramin blocks interaction between human FGF1 and FGFR2 D2 domain and reduces downstream signaling activity. Biochem Biophys Res Commun 2016; 477:861-867. [PMID: 27387234 DOI: 10.1016/j.bbrc.2016.06.149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 06/28/2016] [Indexed: 01/07/2023]
Abstract
The extracellular portion of the human fibroblast growth factor receptor2 D2 domain (FGFR2 D2) interacts with human fibroblast growth factor 1 (hFGF1) to activate a downstream signaling cascade that ultimately affects mitosis and differentiation. Suramin is an antiparasiticdrug and a potent inhibitor of FGF-induced angiogenesis. Suramin has been shown to bind to hFGF1, and might block the interaction between hFGF1 and FGFR2 D2. Here, we titrated hFGF1 with FGFR2 D2 and suramin to elucidate their interactions using the detection of NMR. The docking results of both hFGF1-FGFR2 D2 domain and hFGF1-suramin complex were superimposed. The results indicate that suramin blocks the interaction between hFGF1 and FGFR2 D2. We used the PyMOL software to show the hydrophobic interaction of hFGF1-suramin. In addition, we used a Water-soluble Tetrazolium salts assay (WST1) to assess hFGF1 bioactivity. The results will be useful for the development of new antimitogenic activity drugs.
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Affiliation(s)
- Zong-Sian Wu
- Department of Chemistry, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan.
| | - Che Fu Liu
- Department of Chemistry, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan.
| | - Brian Fu
- Northwood High School, Irvine, CA, USA.
| | - Ruey-Hwang Chou
- Graduate Institute of Cancer Biology and Center for Molecular Medicine, China Medical University, No.91, Hsueh-Shih Road, Taichung 40402, Taiwan; Department of Biotechnology, Asia University, Taiwan.
| | - Chin Yu
- Department of Chemistry, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan.
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27
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So WY, Leung PS. Fibroblast Growth Factor 21 As an Emerging Therapeutic Target for Type 2 Diabetes Mellitus. Med Res Rev 2016; 36:672-704. [PMID: 27031294 DOI: 10.1002/med.21390] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/13/2015] [Accepted: 02/15/2016] [Indexed: 12/19/2022]
Abstract
Fibroblast growth factor (FGF) 21 is a distinctive member of the FGF family that functions as an endocrine factor. It is expressed predominantly in the liver, but is also found in adipose tissue and the pancreas. Pharmacological studies have shown that FGF21 normalizes glucose and lipid homeostasis, thereby preventing the development of metabolic disorders, such as obesity and diabetes. Despite growing evidence for the therapeutic potential of FGF21, paradoxical increases of FGF21 in different disease conditions point to the existence of FGF21 resistance. In this review, we give a critical appraisal of recent advances in the understanding of the regulation of FGF21 production under various physiological conditions, its antidiabetic actions, and the clinical implications. We also discuss recent preclinical and clinical trials using engineered FGF21 analogs in the management of diabetes, as well as the potential side effects of FGF21 therapy.
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Affiliation(s)
- Wing Yan So
- School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Po Sing Leung
- School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Shatin, Hong Kong, China
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28
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Hong S, Hu P, Marino J, Hufnagel SB, Hopkin RJ, Toromanović A, Richieri-Costa A, Ribeiro-Bicudo LA, Kruszka P, Roessler E, Muenke M. Dominant-negative kinase domain mutations in FGFR1 can explain the clinical severity of Hartsfield syndrome. Hum Mol Genet 2016; 25:1912-1922. [PMID: 26931467 DOI: 10.1093/hmg/ddw064] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/22/2016] [Indexed: 12/20/2022] Open
Abstract
Mutations in FGFR1 have recently been associated with Hartsfield syndrome, a clinically distinct syndromic form of holoprosencephaly (HPE) with ectrodactly, which frequently includes combinations of craniofacial, limb and brain abnormalities not typical for classical HPE. Unrelated clinical conditions generally without craniofacial or multi-system malformations include Kallmann syndrome and idiopathic hypogonadotropic hypogonadism. FGFR1 is a principal cause for these less severe diseases as well. Here we demonstrate that of the nine FGFR1 mutations recently detected in our screen of over 200 HPE probands by next generation sequencing, only five distinct mutations in the kinase domain behave as dominant-negative mutations in zebrafish over-expression assays. Three FGFR1 mutations seen in HPE probands behave identical to wild-type FGFR1 in rescue assays, including one apparent de novo variation. Interestingly, in one HPE family, a deleterious FGFR1 allele was transmitted from one parent and a loss-of-function allele in FGF8 from the other parent to both affected daughters. This family is one of the clearest examples to date of gene:gene synergistic interactions causing HPE in humans.
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Affiliation(s)
- Sungkook Hong
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ping Hu
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Sophia B Hufnagel
- Department of Medical Genetics, Cincinnati Children's Medical Center, Cincinnati, OH, USA and
| | - Robert J Hopkin
- Department of Medical Genetics, Cincinnati Children's Medical Center, Cincinnati, OH, USA and
| | - Alma Toromanović
- Department of Pediatrics, University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | | | | | - Paul Kruszka
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Erich Roessler
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maximilian Muenke
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA,
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Martín-Sánchez F, Diamond C, Zeitler M, Gomez AI, Baroja-Mazo A, Bagnall J, Spiller D, White M, Daniels MJD, Mortellaro A, Peñalver M, Paszek P, Steringer JP, Nickel W, Brough D, Pelegrín P. Inflammasome-dependent IL-1β release depends upon membrane permeabilisation. Cell Death Differ 2016; 23:1219-31. [PMID: 26868913 PMCID: PMC4946890 DOI: 10.1038/cdd.2015.176] [Citation(s) in RCA: 185] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 12/03/2015] [Accepted: 12/22/2015] [Indexed: 12/03/2022] Open
Abstract
Interleukin-1β (IL-1β) is a critical regulator of the inflammatory response. IL-1β is not secreted through the conventional ER–Golgi route of protein secretion, and to date its mechanism of release has been unknown. Crucially, its secretion depends upon the processing of a precursor form following the activation of the multimolecular inflammasome complex. Using a novel and reversible pharmacological inhibitor of the IL-1β release process, in combination with biochemical, biophysical, and real-time single-cell confocal microscopy with macrophage cells expressing Venus-labelled IL-1β, we have discovered that the secretion of IL-1β after inflammasome activation requires membrane permeabilisation, and occurs in parallel with the death of the secreting cell. Thus, in macrophages the release of IL-1β in response to inflammasome activation appears to be a secretory process independent of nonspecific leakage of proteins during cell death. The mechanism of membrane permeabilisation leading to IL-1β release is distinct from the unconventional secretory mechanism employed by its structural homologues fibroblast growth factor 2 (FGF2) or IL-1α, a process that involves the formation of membrane pores but does not result in cell death. These discoveries reveal key processes at the initiation of an inflammatory response and deliver new insights into the mechanisms of protein release.
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Affiliation(s)
- F Martín-Sánchez
- Grupo de Inflamación Molecular, Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas, Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), Murcia, Spain
| | - C Diamond
- Faculty of Life Sciences, University of Manchester, Manchester, UK.,Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Singapore
| | - M Zeitler
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | - A I Gomez
- Grupo de Inflamación Molecular, Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas, Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), Murcia, Spain
| | - A Baroja-Mazo
- Grupo de Inflamación Molecular, Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas, Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), Murcia, Spain
| | - J Bagnall
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - D Spiller
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - M White
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - M J D Daniels
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - A Mortellaro
- Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Singapore
| | - M Peñalver
- Probelte Biotechnology, S.L., Murcia, Spain
| | - P Paszek
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - J P Steringer
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | - W Nickel
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | - D Brough
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - P Pelegrín
- Grupo de Inflamación Molecular, Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas, Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria (IMIB-Arrixaca), Murcia, Spain.,Faculty of Life Sciences, University of Manchester, Manchester, UK
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30
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Nunes QM, Li Y, Sun C, Kinnunen TK, Fernig DG. Fibroblast growth factors as tissue repair and regeneration therapeutics. PeerJ 2016; 4:e1535. [PMID: 26793421 PMCID: PMC4715458 DOI: 10.7717/peerj.1535] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 12/05/2015] [Indexed: 12/25/2022] Open
Abstract
Cell communication is central to the integration of cell function required for the development and homeostasis of multicellular animals. Proteins are an important currency of cell communication, acting locally (auto-, juxta-, or paracrine) or systemically (endocrine). The fibroblast growth factor (FGF) family contributes to the regulation of virtually all aspects of development and organogenesis, and after birth to tissue maintenance, as well as particular aspects of organism physiology. In the West, oncology has been the focus of translation of FGF research, whereas in China and to an extent Japan a major focus has been to use FGFs in repair and regeneration settings. These differences have their roots in research history and aims. The Chinese drive into biotechnology and the delivery of engineered clinical grade FGFs by a major Chinese research group were important enablers in this respect. The Chinese language clinical literature is not widely accessible. To put this into context, we provide the essential molecular and functional background to the FGF communication system covering FGF ligands, the heparan sulfate and Klotho co-receptors and FGF receptor (FGFR) tyrosine kinases. We then summarise a selection of clinical reports that demonstrate the efficacy of engineered recombinant FGF ligands in treating a wide range of conditions that require tissue repair/regeneration. Alongside, the functional reasons why application of exogenous FGF ligands does not lead to cancers are described. Together, this highlights that the FGF ligands represent a major opportunity for clinical translation that has been largely overlooked in the West.
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Affiliation(s)
- Quentin M. Nunes
- Department of Molecular and Clinical Cancer Medicine, NIHR Liverpool Pancreas Biomedical Research Unit, University of Liverpool, Liverpool, United Kingdom
| | - Yong Li
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Changye Sun
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Tarja K. Kinnunen
- Department of Biology, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - David G. Fernig
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
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31
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Meduri A, Scorolli L, Scalinci SZ, Grenga PL, Lupo S, Rechichi M, Meduri E. Effect of the combination of basic fibroblast growth factor and cysteine on corneal epithelial healing after photorefractive keratectomy in patients affected by myopia. Indian J Ophthalmol 2015; 62:424-8. [PMID: 24145571 PMCID: PMC4064216 DOI: 10.4103/0301-4738.119420] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Background: This study sought to evaluate the effect of basic fibroblast growth factor eye drops and cysteine oral supplements on corneal healing in patients treated with photorefractive keratectomy (PRK). Materials and Methods: One hundred and twenty patients treated bilaterally with PRK for myopia were enrolled at one of two eye centers (Clinica Santa Lucia, Bologna, Italy and Department of Ophthalmology, University of Magna Graecia, Catanzaro, Italy) and were treated at the former center. Sixty patients included in the study group (Group 1) were treated postoperatively with topical basic fibroblast growth factor plus oral L-cysteine supplements, whereas 60 subjects included in the control group (Group 2) received basic fibroblast growth factor eye drops. We recorded the rate of corneal re-epithelialization and patients were followed-up every 30 days for 6 months. Statistical analyses were performed on the collected data. Results: The eyes in Group 1 demonstrated complete re-epithelialization at Day 5, whereas the eyes in Group 2 achieved this status on Day 6. No side-effects were reported. Conclusions: Patients treated with basic fibroblast growth factor eye drops and L-cysteine oral supplements benefit from more rapid corneal re-epithelialization. In human eyes, this combination treatment appeared to be safe and effective in accelerating corneal surfacing after surgery. Financial Disclosure: No author has any financial or proprietary interest in any material or method used in this study. Trial Registration: Current Controlled Trials ISRCTN73824458.
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Affiliation(s)
- Alessandro Meduri
- Department of Ophthalmology, Surgical Specialities, University of Messina, Messina, Italy
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32
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Zhou D, Hansen D, Shabalin IG, Gustchina A, Vieira DF, de Brito MV, Araújo APU, Oliva MLV, Wlodawer A. Structure of BbKI, a disulfide-free plasma kallikrein inhibitor. Acta Crystallogr F Struct Biol Commun 2015; 71:1055-62. [PMID: 26249699 PMCID: PMC4528941 DOI: 10.1107/s2053230x15011127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 06/08/2015] [Indexed: 12/19/2022] Open
Abstract
A serine protease inhibitor from Bauhinia bauhinioides (BbKI) belongs to the Kunitz family of plant inhibitors, which are common in plant seeds. BbKI does not contain any disulfides, unlike most other members of this family. It is a potent inhibitor of plasma kallikrein, in addition to other serine proteases, and thus exhibits antithrombotic activity. A high-resolution crystal structure of recombinantly expressed BbKI was determined (at 1.4 Å resolution) and was compared with the structures of other members of the family. Modeling of a complex of BbKI with plasma kallikrein indicates that changes in the local structure of the reactive loop that includes the specificity-determining Arg64 are necessary in order to explain the tight binding. An R64A mutant of BbKI was found to be a weaker inhibitor of plasma kallikrein, but was much more potent against plasmin, suggesting that this mutant may be useful for preventing the breakup of fibrin and maintaining clot stability, thus preventing excessive bleeding.
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Affiliation(s)
- Dongwen Zhou
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Daiane Hansen
- Universidade Federal de São Paulo–Escola Paulista de Medicina, Rua Três de Maio 100, 04044-020 São Paulo-SP, Brazil
| | - Ivan G. Shabalin
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA 22908, USA
| | - Alla Gustchina
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Debora F. Vieira
- Institute of Physics of São Carlos, University of São Paulo, Avenida Trabalhador Sãocarlense 400, 13560-970 São Carlos-SP, Brazil
| | - Marlon V. de Brito
- Institute of Physics of São Carlos, University of São Paulo, Avenida Trabalhador Sãocarlense 400, 13560-970 São Carlos-SP, Brazil
| | - Ana Paula U. Araújo
- Institute of Physics of São Carlos, University of São Paulo, Avenida Trabalhador Sãocarlense 400, 13560-970 São Carlos-SP, Brazil
| | - Maria Luiza V. Oliva
- Universidade Federal de São Paulo–Escola Paulista de Medicina, Rua Três de Maio 100, 04044-020 São Paulo-SP, Brazil
| | - Alexander Wlodawer
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
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33
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Pablo JL, Pitt GS. Fibroblast Growth Factor Homologous Factors: New Roles in Neuronal Health and Disease. Neuroscientist 2014; 22:19-25. [PMID: 25492945 DOI: 10.1177/1073858414562217] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Fibroblast growth factor homologous factors (FHFs) are a noncanonical subset of intracellular fibroblast growth factors that have been implicated in a variety of neurobiological processes and in disease. They are most prominently regulators of voltage-gated Na(+) channels (NaVs). In this review, we discuss new insights into how FHFs modulate NaVs. This is followed by a summary of a growing body of evidence that FHFs operate in much broader fashion. Finally, we highlight unknown aspects of FHF function as areas of future interest.
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Affiliation(s)
- Juan L Pablo
- Ion Channel Research Unit, Duke University Medical Center, Durham, NC, USA Department of Neurobiology, Duke University Medical Center, Durham, NC, USA
| | - Geoffrey S Pitt
- Ion Channel Research Unit, Duke University Medical Center, Durham, NC, USA Department of Neurobiology, Duke University Medical Center, Durham, NC, USA Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC, USA
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Wang J, Sontag D, Cattini PA. Heart-specific expression of FGF-16 and a potential role in postnatal cardioprotection. Cytokine Growth Factor Rev 2014; 26:59-66. [PMID: 25106133 DOI: 10.1016/j.cytogfr.2014.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 07/11/2014] [Accepted: 07/14/2014] [Indexed: 10/25/2022]
Abstract
Fibroblast growth factor 16 (FGF-16) was originally cloned from rat heart. Subsequent investigation of mouse FGF-16, including generation of null mice, revealed a specific pattern of expression in the endocardium and epicardium, and role for FGF-16 during embryonic heart development. FGF-16 is expressed mainly in brown adipose tissue during rat embryonic development, but is expressed mainly in the murine heart after birth. There is also an apparent switch from limited endocardial and epicardial expression in the embryo to the myocardium in the perinatal period. The FGF-16 gene and its location on the X chromosome are conserved between human and murine species, and no other member of the FGF family shows this pattern of spatial and temporal expression. The human and murine FGF-16 gene promoter regions also share an equivalent location for TATA sequences, as well as adjacent putative binding sites for transcription factors linked to cardiac expression and response to stress. Recent evidence has implicated nonsense mutation of FGF-16 with increased cardiovascular risk, and FGF-16 supplementation with cardioprotection. Here we review the important role of FGF-16 in embryonic heart development, its gene regulation, and evidence for FGF-16 as an endogenous and exogenous cardiac-specific and protective factor in the postnatal heart. Moreover, given the conservation of the FGF-16 gene and its chromosomal location between species, the question of support for a cardiac role in the human population is also considered.
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Affiliation(s)
- Jie Wang
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada.
| | - David Sontag
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada
| | - Peter A Cattini
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada
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35
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Agostino M, Gandhi NS, Mancera RL. Development and application of site mapping methods for the design of glycosaminoglycans. Glycobiology 2014; 24:840-51. [DOI: 10.1093/glycob/cwu045] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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36
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Laestander C, Engström W. Role of fibroblast growth factors in elicitation of cell responses. Cell Prolif 2014; 47:3-11. [PMID: 24354576 PMCID: PMC6495704 DOI: 10.1111/cpr.12084] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 10/04/2013] [Indexed: 12/13/2022] Open
Abstract
Fibroblast growth factors (FGFs) are signalling peptides that control important cell processes such as proliferation, differentiation, migration, adhesion and survival. Through binding to different types of receptor on the cell surface, these peptides can have different effects on a target cell, the effect achieved depending on many features. Thus, each of the known FGFs elicits specific biological responses. FGF receptors (FGFR 1-5) initiate diverse intracellular pathways, which in turn lead to a variety of results. FGFs also bind the range of FGFRs with a series of affinities and each type of cells expresses FGFRs in different qualitative and quantitative patterns, which also affect responses. To summarize, cell response to binding of an FGF ligand depends on type of FGF, FGF receptor and target cell, all interacting in concert. This review aims to examine properties of the FGF family and its members receptors. It also aims to summarize features of intracellular signalling and highlight differential effects of the various FGFs in different circumstances.
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Affiliation(s)
- C. Laestander
- Department of Biomedical Sciences and Veterinary Public HealthFaculty of Veterinary MedicineSwedish University of Agricultural SciencesUppsalaSweden
| | - W. Engström
- Department of Biomedical Sciences and Veterinary Public HealthFaculty of Veterinary MedicineSwedish University of Agricultural SciencesUppsalaSweden
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37
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Chen JH, Lee DC, Chiu IM. Cytotoxic effects of acrylamide in nerve growth factor or fibroblast growth factor 1-induced neurite outgrowth in PC12 cells. Arch Toxicol 2013; 88:769-80. [PMID: 24318646 DOI: 10.1007/s00204-013-1174-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 11/20/2013] [Indexed: 12/26/2022]
Abstract
Acrylamide is a neurological and reproductive toxicant in humans and laboratory animals; however, the neuron developmental toxicity of acrylamide remains unclear. The aims of this study are to investigate the cytotoxicity and neurite outgrowth inhibition of acrylamide in nerve growth factor (NGF)- or fibroblast growth factor 1 (FGF1)-mediated neural development of PC12 cells. MTS assay showed that acrylamide treatment suppresses NGF- or FGF1-induced PC12 cell proliferation in a time- and dose-dependent manner. Quantification of neurite outgrowth demonstrated that 0.5 mM acrylamide treatment resulted in significant decrease in differentiation of NGF- or FGF1-stimulated PC12 cells. This decrease is accompanied with the reduced expression of growth-associated protein-43, a neuronal marker. Moreover, relative levels of pERK, pAKT, pSTAT3 and pCREB were increased within 5-10 min when PC12 cells were treated with NGF or FGF1. Acrylamide (0.5 mM) decreases the NGF-induced activation of AKT-CREB but not ERK-STAT3 within 20 min. Similarly, acrylamide (0.5 mM) decreases the FGF1-induced activation of AKT-CREB within 20 min. In contrast to the NGF treatment, the ERK-STAT3 activation that was induced by FGF1 was slightly reduced by 0.5 mM acrylamide. We further showed that PI3K inhibitor (LY294002), but not MEK inhibitor (U0126), could synergize with acrylamide (0.5 mM) to reduce the cell viability and neurite outgrowth in NGF- or FGF1-stimulated PC12 cells. Moreover, acrylamide (0.5 mM) increased reactive oxygen species (ROS) activities in NGF- or FGF1-stimulated PC12 cells. This increase was reversed by Trolox (an ROS scavenging agent) co-treatment. Together, our findings reveal that NGF- or FGF1-stimulation of the neuronal differentiation of PC12 cells is attenuated by acrylamide through the inhibition of PI3K-AKT-CREB signaling, along with the production of ROS.
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Affiliation(s)
- Jong-Hang Chen
- Institute of Cellular and System Medicine, National Health Research Institutes, 35, Keyan Rd, Miaoli, 350, Taiwan
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Brown A, Robinson CJ, Gallagher JT, Blundell TL. Cooperative heparin-mediated oligomerization of fibroblast growth factor-1 (FGF1) precedes recruitment of FGFR2 to ternary complexes. Biophys J 2013; 104:1720-30. [PMID: 23601319 DOI: 10.1016/j.bpj.2013.02.051] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 12/31/2012] [Accepted: 02/25/2013] [Indexed: 10/27/2022] Open
Abstract
Fibroblast growth factors (FGFs) utilize cell surface heparan sulfate as a coreceptor in the assembly of signaling complexes with FGF-receptors on the plasma membrane. Here we undertake a complete thermodynamic characterization of the assembly of the FGF signaling complex using isothermal titration calorimetry. Heparin fragments of defined length are used as chemical analogs of the sulfated domains of heparan sulfate and examined for their ability to oligomerize FGF1. Binding is modeled using the McGhee-von Hippel formalism for the cooperative binding of ligands to a monodimensional lattice. Oligomerization of FGFs on heparin is shown to be mediated by positive cooperativity (α = 6). Heparin octasaccharide is the shortest length capable of dimerizing FGF1 and on longer heparin chains FGF1 binds with a minimal footprint of 4.2 saccharide units. The thermodynamics and stoichiometry of the ternary complex suggest that in solution FGF1 binds to heparin in a trans-dimeric manner before FGFR recruitment.
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Affiliation(s)
- Alan Brown
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom.
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39
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Kumar TKS, Sivaraman T, Samuel D, Srisailam S, Ganesh G, Hsieh HC, Hung KW, Peng HJ, Ho MC, Arunkumar AI, Yu C. Protein Folding and β-Sheet Proteins. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200000141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Belov AA, Mohammadi M. Molecular mechanisms of fibroblast growth factor signaling in physiology and pathology. Cold Spring Harb Perspect Biol 2013; 5:a015958. [PMID: 23732477 PMCID: PMC3660835 DOI: 10.1101/cshperspect.a015958] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Fibroblast growth factors (FGFs) signal in a paracrine or endocrine fashion to mediate a myriad of biological activities, ranging from issuing developmental cues, maintaining tissue homeostasis, and regulating metabolic processes. FGFs carry out their diverse functions by binding and dimerizing FGF receptors (FGFRs) in a heparan sulfate (HS) cofactor- or Klotho coreceptor-assisted manner. The accumulated wealth of structural and biophysical data in the past decade has transformed our understanding of the mechanism of FGF signaling in human health and development, and has provided novel concepts in receptor tyrosine kinase (RTK) signaling. Among these contributions are the elucidation of HS-assisted receptor dimerization, delineation of the molecular determinants of ligand-receptor specificity, tyrosine kinase regulation, receptor cis-autoinhibition, and tyrosine trans-autophosphorylation. These structural studies have also revealed how disease-associated mutations highjack the physiological mechanisms of FGFR regulation to contribute to human diseases. In this paper, we will discuss the structurally and biophysically derived mechanisms of FGF signaling, and how the insights gained may guide the development of therapies for treatment of a diverse array of human diseases.
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Affiliation(s)
- Artur A Belov
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016, USA
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41
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Oldefest M, Nowinski J, Hung CW, Neelsen D, Trad A, Tholey A, Grötzinger J, Lorenzen I. Upd3--an ancestor of the four-helix bundle cytokines. Biochem Biophys Res Commun 2013; 436:66-72. [PMID: 23707937 DOI: 10.1016/j.bbrc.2013.04.107] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 04/29/2013] [Indexed: 11/19/2022]
Abstract
The unpaired-like protein 3 (Upd3) is one of the three cytokines of Drosophila melanogaster supposed to activate the JAK/STAT signaling pathway (Janus tyrosine kinases/signal transducer and activator of transcription). This activation occurs via the type-I cytokine receptor domeless, an orthologue of gp130, the common signal transducer of all four-helix bundle interleukin-6 (IL-6) type cytokines. Both receptors are known to exist as preformed dimers in the plasma membrane and initiate the acute-phase response. These facts indicate an evolutionary relation between vertebrate IL-6 and the Drosophila protein Upd3. Here we presented data which strengthen this notion. Upd3 was recombinantly expressed, a renaturation and purification protocol was established which allows to obtain high amounts of biological active protein. This protein is, like human IL-6, a monomeric-α helical cytokine, implicating that Upd3 is an "ancestor" of the four-helix bundle cytokines.
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Affiliation(s)
- Mirja Oldefest
- Biochemisches Institut der Christian-Albrechts-Universität Kiel, Olshausenstr. 40, 24118 Kiel, Germany.
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42
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Song JA, Koo BK, Chong SH, Kwak J, Ryu HB, Nguyen MT, Vu TTT, Jeong B, Kim SW, Choe H. Expression and purification of biologically active human FGF2 containing the b'a' domains of human PDI in Escherichia coli. Appl Biochem Biotechnol 2013; 170:67-80. [PMID: 23471584 DOI: 10.1007/s12010-013-0140-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 02/13/2013] [Indexed: 01/31/2023]
Abstract
Among the members of the fibroblast growth factor (FGF) family that affect the growth, differentiation, migration, and survival of many cell types, FGF2 is the most abundant in the central nervous system. Because of its wound healing effects, FGF2 has potential as a therapeutic agent. The protein is also added to the culture media to maintain stem cells. Expression and purification procedures for FGF2 that are highly efficient and low cost have been intensively investigated for the past two decades. Our current study focuses on the purification of FGF2 fused with b'a' domains of human protein disulfide isomerase to elevate overexpression, solubility, and stability with a simplified experimental procedure using only ion exchange chromatography, as well as on the confirmation of the biological activity of FGF2 on fibroblast Balb/c 3T3 cells and hippocampal neural cells.
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Affiliation(s)
- Jung-A Song
- Department of Physiology and Bio-medical Institute of Technology, University of Ulsan College of Medicine, Seoul 138-736, South Korea
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43
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Pu F, Wang E, Jiang H, Ren J. Identification of polyoxometalates as inhibitors of basic fibroblast growth factor. ACTA ACUST UNITED AC 2013; 9:113-20. [DOI: 10.1039/c2mb25389e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Goetz R, Ohnishi M, Kir S, Kurosu H, Wang L, Pastor J, Ma J, Gai W, Kuro-o M, Razzaque MS, Mohammadi M. Conversion of a paracrine fibroblast growth factor into an endocrine fibroblast growth factor. J Biol Chem 2012; 287:29134-46. [PMID: 22733815 PMCID: PMC3436551 DOI: 10.1074/jbc.m112.342980] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Revised: 06/06/2012] [Indexed: 11/06/2022] Open
Abstract
FGFs 19, 21, and 23 are hormones that regulate in a Klotho co-receptor-dependent fashion major metabolic processes such as glucose and lipid metabolism (FGF21) and phosphate and vitamin D homeostasis (FGF23). The role of heparan sulfate glycosaminoglycan in the formation of the cell surface signaling complex of endocrine FGFs has remained unclear. Here we show that heparan sulfate is not a component of the signal transduction unit of FGF19 and FGF23. In support of our model, we convert a paracrine FGF into an endocrine ligand by diminishing heparan sulfate-binding affinity of the paracrine FGF and substituting its C-terminal tail for that of an endocrine FGF containing the Klotho co-receptor-binding site to home the ligand into the target tissue. In addition to serving as a proof of concept, the ligand conversion provides a novel strategy for engineering endocrine FGF-like molecules for the treatment of metabolic disorders, including global epidemics such as type 2 diabetes and obesity.
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Affiliation(s)
- Regina Goetz
- From the Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Mutsuko Ohnishi
- the Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts 02115
| | - Serkan Kir
- the Department of Pharmacology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, and
| | - Hiroshi Kurosu
- the Department of Pathology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390
| | - Lei Wang
- the Department of Pathology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390
| | - Johanne Pastor
- the Department of Pathology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390
| | - Jinghong Ma
- From the Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Weiming Gai
- From the Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Makoto Kuro-o
- the Department of Pathology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390
| | - Mohammed S. Razzaque
- the Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts 02115
| | - Moosa Mohammadi
- From the Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
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Steringer JP, Bleicken S, Andreas H, Zacherl S, Laussmann M, Temmerman K, Contreras FX, Bharat TAM, Lechner J, Müller HM, Briggs JAG, García-Sáez AJ, Nickel W. Phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2)-dependent oligomerization of fibroblast growth factor 2 (FGF2) triggers the formation of a lipidic membrane pore implicated in unconventional secretion. J Biol Chem 2012; 287:27659-69. [PMID: 22730382 DOI: 10.1074/jbc.m112.381939] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Fibroblast growth factor 2 (FGF2) is a critical mitogen with a central role in specific steps of tumor-induced angiogenesis. It is known to be secreted by unconventional means bypassing the endoplasmic reticulum/Golgi-dependent secretory pathway. However, the mechanism of FGF2 membrane translocation into the extracellular space has remained elusive. Here, we show that phosphatidylinositol 4,5-bisphosphate-dependent membrane recruitment causes FGF2 to oligomerize, which in turn triggers the formation of a lipidic membrane pore with a putative toroidal structure. This process is strongly up-regulated by tyrosine phosphorylation of FGF2. Our findings explain key requirements of FGF2 secretion from living cells and suggest a novel self-sustained mechanism of protein translocation across membranes with a lipidic membrane pore being a transient translocation intermediate.
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Affiliation(s)
- Julia P Steringer
- Heidelberg University Biochemistry Center, 69120 Heidelberg, Germany
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Mohan SK, Rani SG, Chiu IM, Yu C. WITHDRAWN: Interaction of FGF1 with a novel anti-angiogenic drug SSR128129E. Arch Biochem Biophys 2012:S0003-9861(12)00231-7. [PMID: 22683470 DOI: 10.1016/j.abb.2012.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/16/2012] [Accepted: 05/25/2012] [Indexed: 11/18/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Sepuru K Mohan
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan
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The structural biology of the FGF19 subfamily. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 728:1-24. [PMID: 22396159 DOI: 10.1007/978-1-4614-0887-1_1] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The ability of the Fibroblast Growth Factor (FGF) 19 subfamily to signal in an endocrine fashion sets this subfamily apart from the remaining five FGF subfamilies known for their paracrine functions during embryonic development. Compared to the members of paracrine FGF subfamiles, the three members of the FGF19 subfamily, namely FGF19, FGF21 and FGF23, have poor affinity for heparan sulfate (HS) and therefore can diffuse freely in the HS-rich extracellular matrix to enter into the bloodstream. In further contrast to paracrine FGFs, FGF19 subfamily members have unusually poor affinity for their cognate FGF receptors (FGFRs) and therefore cannot bind and activate them in a solely HS-dependent fashion. As a result, the FGF19 subfamily requires α/βklotho coreceptor proteins in order to bind, dimerize and activate their cognate FGFRs. This klotho-dependency also determines the tissue specificity of endocrine FGFs. Recent structural and biochemical studies have begun to shed light onto the molecular basis for the klotho-dependent endocrine mode of action of the FGF19 subfamily. Crystal structures of FGF19 and FGF23 show that the topology of the HS binding site (HBS) of FGF19 subfamily members deviates drastically from the common topology adopted by the paracrine FGFs. The distinct topologies of the HBS of FGF19 and FGF23 prevent HS from direct hydrogen bonding with the backbone atoms of the HBS of these ligands and accordingly decrease the HS binding affinity of this subfamily. Recent biochemical data reveal that the ?klotho ectodomain binds avidly to the ectodomain of FGFR1c, the main cognate FGFR of FGF23, creating a de novo high affinity binding site for the C-terminal tail of FGF23. The isolated FGF23 C-terminus can be used to effectively inhibit the formation of the FGF23-FGFR1c-αklotho complex and alleviate hypophosphatemia in renal phosphate disorders due to elevated levels of FGF23.
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48
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49
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Sunmonu NA, Li K, Li JYH. Numerous isoforms of Fgf8 reflect its multiple roles in the developing brain. J Cell Physiol 2011; 226:1722-6. [PMID: 21506104 DOI: 10.1002/jcp.22587] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Soluble growth factors play an important role in the coordination and integration of cell proliferation, differentiation, fate determination, and morphogenesis during development of multicellular organisms. Fibroblast growth factors (FGFs) are a large family of polypeptide growth factors that are present in organisms ranging from nematodes to humans. RNA alternative splicing of FGFs and their receptors further enhances the complexity of this ligand-receptor system. The mouse Fgf8 gene produces eight splice variants, which encode isoform proteins with different N-termini and distinct receptor-binding affinity and biological activity. In this article, we review the roles of Fgf8 in vertebrate development and summarize the recent findings on the in vivo function of different Fgf8 splice variants. We propose that multiple Fgf8 isoform proteins act in concert to regulate the overall function of Fgf8 and account for the diverse and essential role of Fgf8 during vertebrate development.
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Affiliation(s)
- N Abimbola Sunmonu
- Department of Genetics and Developmental Biology, University of Connecticut Health Center, Farmington, Connecticut 06030-6403, USA
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50
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Amsden BG. Delivery approaches for angiogenic growth factors in the treatment of ischemic conditions. Expert Opin Drug Deliv 2011; 8:873-90. [DOI: 10.1517/17425247.2011.577412] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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