1
|
Kleiner S, Wulf V, Bisker G. Single-walled carbon nanotubes as near-infrared fluorescent probes for bio-inspired supramolecular self-assembled hydrogels. J Colloid Interface Sci 2024; 670:439-448. [PMID: 38772260 DOI: 10.1016/j.jcis.2024.05.098] [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: 02/04/2024] [Revised: 05/12/2024] [Accepted: 05/14/2024] [Indexed: 05/23/2024]
Abstract
Hydrogels derived from fluorenylmethoxycarbonyl (Fmoc)-conjugated amino acids and peptides demonstrate remarkable potential in biomedical applications, including drug delivery, tissue regeneration, and tissue engineering. These hydrogels can be injectable, offering a minimally invasive approach to hydrogel implantation. Given their potential for prolonged application, there is a need for non-destructive evaluation of their properties over extended periods. Thus, we introduce a hydrogel characterization platform employing single-walled carbon nanotubes (SWCNTs) as near-infrared (NIR) fluorescent probes. Our approach involves generating supramolecular self-assembling hydrogels from aromatic Fmoc-amino acids. Integrating SWCNTs into the hydrogels maintains their structural and mechanical properties, establishing SWCNTs as optical probes for hydrogels. We demonstrate that the SWCNT NIR-fluorescence changes during the gelation process correlate to rheological changes within the hydrogels. Additionally, single particle tracking of SWCNTs incorporated in the hydrogels provides insights into differences in hydrogel morphologies. Furthermore, the disassembly process of the hydrogels can be monitored through the SWCNT fluorescence modulation. The unique attribute of SWCNTs as non-photobleaching fluorescent sensors, emitting at the biologically transparent window, offers a non-destructive method for studying hydrogel dynamics over extended periods. This platform could be applied to a wide range of self-assembling hydrogels to advance our understanding and applications of supramolecular assembly technologies.
Collapse
Affiliation(s)
- Shirel Kleiner
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Verena Wulf
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Gili Bisker
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel; Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv 6997801, Israel; Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 6997801, Israel; Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv 6997801, Israel.
| |
Collapse
|
2
|
Wang Y, Lin J, Yu Z, Cheng J, Cheng J, Cui W. Rigid-flexible nanocarriers loaded with active peptides for antioxidant and anti-inflammatory applications in skin. Colloids Surf B Biointerfaces 2024; 236:113772. [PMID: 38394858 DOI: 10.1016/j.colsurfb.2024.113772] [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: 12/13/2023] [Revised: 01/18/2024] [Accepted: 01/27/2024] [Indexed: 02/25/2024]
Abstract
Peptides are recognized as highly effective and safe bioactive ingredients. However, t their practical application is limited and hampered by harsh conditions for practical drug delivery. Hence, a novel peptide nanocarrier of copper peptide (GHK-Cu) encapsulation developed by liposome technology combined with the classical Chinese concept of rigidity and flexibility. Different polyols were selected as modification ligands for phospholipid bilayers to construct a nano drug-carrying system with high loading rate, good stability and biocompatibility. In vitro, this complex not only significantly retarded the release ability of copper peptides, but also enabled copper peptides to be effectively resistant to enzymatic degradation. Furthermore, cellular experiments showed that this system mainly regulates Nrf2, SIRT1, and PEG2/COX-2-related signaling pathways, thus effectively counteracting cellular inflammation, senescence, and apoptosis from oxidative damage. Interestingly, a green, non-toxic, efficient and convenient antioxidant system was developed for the prevention and deceleration of skin aging.
Collapse
Affiliation(s)
- Yan Wang
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jialiang Lin
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zihao Yu
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jinbo Cheng
- Zhuhai Hairology Biotech Co., Ltd, Zhuhai 519000, China
| | - Jianhua Cheng
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Weikang Cui
- Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| |
Collapse
|
3
|
Papaioannou A, Liakopoulou A, Papoulis D, Gianni E, Gkolfi P, Zygouri E, Letsiou S, Hatziantoniou S. Effect of Peptides on the Synthesis, Properties and Wound Healing Capacity of Silver Nanoparticles. Pharmaceutics 2023; 15:2471. [PMID: 37896231 PMCID: PMC10609782 DOI: 10.3390/pharmaceutics15102471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/08/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
The aim of this study is the synthesis of novel peptide-silver nanoparticle conjugates with enhanced wound healing capacity. Peptide-silver nanoparticle conjugates were synthesized using myristoyl tetrapeptide 6 (MT6) or copper tripeptide 1 (CuTP1). Peptide-free silver nanoparticles (AgNP) were synthesized using NaBH4 and sodium citrate and were used as control. The addition of the peptides during or after the synthesis of nanoparticles and its impact on the properties of the synthesized peptide-silver nanoparticle conjugates were assessed. The monitoring of the synthesis of nanoparticles was achieved using ultraviolet-visible spectrophotometry (UV-/Vis). The characteristics and colloidal stability of the nanoparticles (size and ζ-potential distribution, morphology, composition and structure) were monitored using dynamic laser scattering (DLS), transmission electron microscopy (TEM), atomic absorption spectroscopy (AAS) and X-ray diffraction (XRD). The wound healing capacity of the peptide-silver nanoparticle conjugates was assessed using scratch test assay on fibroblasts (NIH/3T3). The results indicated that the addition of the peptides during the synthesis of nanoparticles lead to better yield of the reaction and more effective capping while the size distribution and ζ-potential of the conjugates indicated long-term colloidal stability. The MT6-AgNP conjugate exhibited 71.97 ± 4.35% wound closure, which was about 5.48-fold higher (p < 0.05) than the corresponding free MT6. The CuTP1-AgNP conjugate exhibited 62.37 ± 18.33% wound closure that was better by 2.82 fold (p < 0.05) compared to the corresponding free CuTP1. Both peptides led to the synthesis of silver nanoparticle conjugates with enhanced wound healing capacity compared to the respective free peptide or to the peptide-free AgNP (29.53 ± 4.71% wound closure, p < 0.05). Our findings demonstrated that the synthetized peptide-silver nanoparticle conjugates are promising ingredients for wound care formulation.
Collapse
Affiliation(s)
- Afroditi Papaioannou
- Department of Pharmacy, University of Patras, 26504 Patras, Greece; (A.P.); (A.L.)
| | - Angeliki Liakopoulou
- Department of Pharmacy, University of Patras, 26504 Patras, Greece; (A.P.); (A.L.)
| | - Dimitris Papoulis
- Department of Geology, University of Patras, 26504 Patras, Greece; (D.P.); (E.G.)
| | - Eleni Gianni
- Department of Geology, University of Patras, 26504 Patras, Greece; (D.P.); (E.G.)
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH), 15125 Athens, Greece
| | - Patroula Gkolfi
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (P.G.); (E.Z.)
| | - Eleni Zygouri
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (P.G.); (E.Z.)
| | - Sophia Letsiou
- Department of Food Science and Technology, University of West Attica, Agiou Spyridonos 28, 12243 Aegaleo, Greece;
| | - Sophia Hatziantoniou
- Department of Pharmacy, University of Patras, 26504 Patras, Greece; (A.P.); (A.L.)
| |
Collapse
|
4
|
Jiang F, Wu Y, Liu Z, Hong M, Huang Y. Synergy of GHK-Cu and hyaluronic acid on collagen IV upregulation via fibroblast and ex-vivo skin tests. J Cosmet Dermatol 2023; 22:2598-2604. [PMID: 37062921 DOI: 10.1111/jocd.15763] [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: 02/08/2023] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/18/2023]
Abstract
INTRODUCTION GHK-Cu and HA are two commonly used skin care ingredients, both of which were reported to enhance collagen synthesis. This work aims to investigate their co-effect on collagen regulation. MATERIALS AND METHODS In cell experiments, human dermal fibroblasts were treated by a series of GHK-Cu and HA combinations, and the expressions of collagen I, IV, and VII were measured by qRT-PCR. The best formula screened out from cell experiments were further studied by ex-vivo skin model, and the content of collagen IV was quantified by immunofluorescence method. RESULTS The combination GHK-Cu and HA was found to promote the generation of collagen I, IV, and VII. Especially, they form a synergy on collagen IV. At the ratio of 1:9, GHK-Cu and LMW HA deliver the strongest effect to elevate collagen IV synthesis by 25.4 times in cell test and 2.03 times in ex-vivo skin test. CONCLUSION The co-effect of GHK-Cu and HA was revealed. Their synergy brings an insight to anti-aging technology: choosing proper molecular weight of HA and managing its ratio with GHK-Cu could enhance DEJ health via stimulating collagen IV synthesis.
Collapse
Affiliation(s)
- Fangru Jiang
- Bloomage Biotechnology Co., Ltd, Jinan, Shandong, China
| | - Yanan Wu
- Bloomage Biotechnology Co., Ltd, Jinan, Shandong, China
| | - Zhe Liu
- Bloomage Biotechnology Co., Ltd, Jinan, Shandong, China
| | - Minhua Hong
- Zhejiang Peptites Biotech Co., Ltd, Shaoxing, Zhejiang, China
| | - Yi Huang
- Zhejiang Peptites Biotech Co., Ltd, Shaoxing, Zhejiang, China
| |
Collapse
|
5
|
Yong J, Mellick AS, Whitelock J, Wang J, Liang K. A Biomolecular Toolbox for Precision Nanomotors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2205746. [PMID: 36055646 DOI: 10.1002/adma.202205746] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/31/2022] [Indexed: 06/15/2023]
Abstract
The application of nanomotors for cancer diagnosis and therapy is a new and exciting area of research, which when combined with precision nanomedicine, promises to solve many of the issues encountered by previous development of passive nanoparticles. The goal of this article is to introduce nanomotor and nanomedicine researchers to the deep pool of knowledge available regarding cancer cell biology and biochemistry, as well as provide a greater appreciation of the complexity of cell membrane compositions, extracellular surfaces, and their functional consequences. A short description of the nanomotor state-of-art for cancer therapy and diagnosis is first provided, as well as recommendations for future directions of the field. Then, a biomolecular targeting toolbox has been collated for researchers looking to apply their nanomaterial of choice to a biological setting, as well as providing a glimpse into currently available clinical therapies and technologies. This toolbox contains an overview of different classes of targeting molecules available for high affinity and specific targeting and cell surface targets to aid researchers in the selection of a clinical disease model and targeting methodology. It is hoped that this review will provide biological context, inspiration, and direction to future nanomotor and nanomedicine research.
Collapse
Affiliation(s)
- Joel Yong
- School of Chemical Engineering and Australian Centre for NanoMedicine, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Albert S Mellick
- Graduate School of Biomedical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
- Ingham Institute for Applied Medical Research, Liverpool, New South Wales, 2170, Australia
| | - John Whitelock
- Graduate School of Biomedical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Kang Liang
- School of Chemical Engineering and Australian Centre for NanoMedicine, The University of New South Wales, Kensington, New South Wales, 2052, Australia
- Graduate School of Biomedical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| |
Collapse
|
6
|
Ringström N, Edling C, Nalesso G, Jeevaratnam K. Framing Heartaches: The Cardiac ECM and the Effects of Age. Int J Mol Sci 2023; 24:4713. [PMID: 36902143 PMCID: PMC10003270 DOI: 10.3390/ijms24054713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/10/2023] [Accepted: 02/15/2023] [Indexed: 03/05/2023] Open
Abstract
The cardiac extracellular matrix (ECM) is involved in several pathological conditions, and age itself is also associated with certain changes in the heart: it gets larger and stiffer, and it develops an increased risk of abnormal intrinsic rhythm. This, therefore, makes conditions such as atrial arrythmia more common. Many of these changes are directly related to the ECM, yet the proteomic composition of the ECM and how it changes with age is not fully resolved. The limited research progress in this field is mainly due to the intrinsic challenges in unravelling tightly bound cardiac proteomic components and also the time-consuming and costly dependency on animal models. This review aims to give an overview of the composition of the cardiac ECM, how different components aid the function of the healthy heart, how the ECM is remodelled and how it is affected by ageing.
Collapse
Affiliation(s)
| | | | | | - Kamalan Jeevaratnam
- Faculty of Health and Medical Science, University of Surrey, Guildford GU2 7AL, UK
| |
Collapse
|
7
|
Modification of amino-acid sequence of cosmetic peptide Eyeseryl enhances the affinity towards copper(II) ion. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Rakhmetova KK, Mishina ES, Vorvul AO, Bobyntsev II, Dolgintsev ME, Bezhin AI. Regenerative effects of Gly-His-Lys and Gly-His-Lys-D-Ala peptides in infected skin wounds. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2022. [DOI: 10.24075/brsmu.2022.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Skin wound healing mechanisms and new ways of improving their efficiency represent an important focus in medicine. In this regard, regulatory peptides, which exhibit physiological polyfunctionality and modulate cell growth and differentiation, are of special interest. This study evaluates the effects of Gly-His-Lys (GHK) and Gly-His-Lys-D-Ala (GHK-D-Ala) peptides in the infected skin wound healing. The wounds were modeled in rats (n=150) by full-thickness dorsal skin defects. The peptides were administered intracutaneously at daily doses of 0.5 or 1.5 µg/kg. The healing was assessed on days 3, 7, and 10 by histomorphometric examination of the wounds with adjacent intact skin. GHK-D-Ala administered at daily doses of 0.5 µg/kg had pronounced positive effect on regeneration processes in the wound, as indicated by significantly reduced numbers of granulocytes and lymphocytes with increased representation of fibroblastic lineages and macrophages, and the resulting higher cellular index (p < 0.05–0.001). At higher doses of GHK-D-Ala (1.5 µg/kg), the beneficial effects were less pronounced. According to the comparative morphological examination, the highest positive effect was achieved with 0.5 µg/kg of GHK-D-Ala. Thus, local administration of the GHK peptide with extra D-alanine at carboxy-terminus significantly mitigated the inflammatory reaction and facilitated the healing of infected skin wounds in rat model.
Collapse
Affiliation(s)
| | - ES Mishina
- Kursk State Medical University, Kursk, Russia
| | - AO Vorvul
- Kursk State Medical University, Kursk, Russia
| | | | | | - AI Bezhin
- Kursk State Medical University, Kursk, Russia
| |
Collapse
|
9
|
Guan T, Li J, Chen C, Liu Y. Self-Assembling Peptide-Based Hydrogels for Wound Tissue Repair. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104165. [PMID: 35142093 PMCID: PMC8981472 DOI: 10.1002/advs.202104165] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/23/2021] [Indexed: 05/02/2023]
Abstract
Wound healing is a long-term, multistage biological process that includes hemostasis, inflammation, proliferation, and tissue remodeling and requires intelligent designs to provide comprehensive and convenient treatment. The complexity of wounds has led to a lack of adequate wound treatment materials, which must systematically regulate unique wound microenvironments. Hydrogels have significant advantages in wound treatment due to their ability to provide spatiotemporal control over the wound healing process. Self-assembling peptide-based hydrogels are particularly attractive due to their innate biocompatibility and biodegradability along with additional advantages including ligand-receptor recognition, stimulus-responsive self-assembly, and the ability to mimic the extracellular matrix. The ability of peptide-based materials to self-assemble in response to the physiological environment, resulting in functionalized microscopic structures, makes them conducive to wound treatment. This review introduces several self-assembling peptide-based systems with various advantages and emphasizes recent advances in self-assembling peptide-based hydrogels that allow for precise control during different stages of wound healing. Moreover, the development of multifunctional self-assembling peptide-based hydrogels that can regulate and remodel the wound immune microenvironment in wound therapy with spatiotemporal control has also been summarized. Overall, this review sheds light on the future clinical and practical applications of self-assembling peptide-based hydrogels.
Collapse
Affiliation(s)
- Tong Guan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Jiayang Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing100190P. R. China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
- GBA National Institute for Nanotechnology InnovationGuangdong510700P. R. China
| | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing100190P. R. China
- GBA National Institute for Nanotechnology InnovationGuangdong510700P. R. China
| |
Collapse
|
10
|
Shah SA, Sohail M, Khan SA, Kousar M. Improved drug delivery and accelerated diabetic wound healing by chondroitin sulfate grafted alginate-based thermoreversible hydrogels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112169. [PMID: 34082970 DOI: 10.1016/j.msec.2021.112169] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/20/2021] [Accepted: 05/03/2021] [Indexed: 12/16/2022]
Abstract
Injectable hydrogels with multifunctional tunable properties comprising biocompatibility, anti-oxidative, anti-bacterial, and/or anti-infection are highly preferred to efficiently promote diabetic wound repair and its development remains a challenge. In this study, we report chondroitin sulphate (CS) and sodium alginate (SA)-based injectable hydrogel using solvent casting method loaded with curcumin that could potentiate reepithelization, increase angiogenesis, and collagen deposition at wound microenvironment to endorse healing cascade. The physical interaction and self-assembly of chondroitin sulfate grafted alginate (CS-Alg-g-PF127) hydrogel were confirmed using nuclear magnetic resonance (1H NMR) and Fourier transformed infrared spectroscopy (FT-IR), and cytocompatibility was confirmed by fibroblast viability assay. The Masson's trichrome (MT) and hematoxylin and eosin (H&E) results revealed that blank chondroitin sulfate grafted alginate (CS-Alg-g-PF127) and CUR loaded CS-Alg-g-PF127 hydrogel had promising tissue regenerative ability, and showing enhanced wound healing compared to other treatment groups. The controlled release of CUR from injectable hydrogel was evaluated by drug release studies and pharmacokinetic profile (PK) using high-performance liquid chromatography (HPLC) that exhibited the mean residence time (MRT) and area under the curve (AUC) was increased up to 16.18 h and 203.64 ± 30.1 μg/mL*h, respectively. Cytotoxicity analysis of the injectable hydrogels using 3 T3-L1 fibroblasts cells and in vivo toxicity evaluated by subcutaneous injection for 24 h followed by histological examination, confirmed good biocompatibility of CUR loaded CS-Alg-g-PF127 hydrogel. Interestingly, the results of in vivo wound healing by injectable hydrogel showed the upregulation of fibroblasts-like cells, collagen deposition, and differentiated keratinocytes stimulating dermo-epidermal junction, which might endorse that they are potential candidates for excisional wound healing models.
Collapse
Affiliation(s)
- Syed Ahmed Shah
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan.
| | - Shujaat Ali Khan
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Mubeen Kousar
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| |
Collapse
|
11
|
Healing of Chronic Wounds by Copper Oxide-Impregnated Wound Dressings-Case Series. ACTA ACUST UNITED AC 2021; 57:medicina57030296. [PMID: 33809898 PMCID: PMC8004176 DOI: 10.3390/medicina57030296] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/15/2021] [Accepted: 03/19/2021] [Indexed: 01/13/2023]
Abstract
Novel antimicrobial wound dressings impregnated with copper oxide micro-particles have been cleared for treatment of acute and chronic wounds. Our objective is to provide preliminary data regarding the potential benefit of using these novel wound dressings including in non-infected wounds. Methods involved the treatment of wounds that responded partially or poorly to conventional wound healing treatments with copper oxide impregnated wound dressings in patients with a range of etiologies. Ten cases of patients with etiologies such as diabetes mellitus, sickle cell disease, renal failure, and necrotizing fasciitis, in which the application of copper oxide impregnated wound dressings in infected and non-infected wounds, which resulted in significant enhanced wound healing, are presented. This was exemplified by clearing of the wound infections, reduction of the fibrous and/or necrotic tissue and by intense granulation, epithelialization, and wound closure. The described 10 case reports support our hypothesis that the copper oxide-containing wound dressing not only confers protection to the wound and the dressing from microbial contamination, and in some cases may help clear the wound infections, but in addition and more importantly, stimulate skin regeneration and wound healing. Our findings are in line with previous animal and in vitro studies showing that copper plays a key role in angiogenesis and skin regeneration. These case reports support the notion that the use of copper oxide impregnated wound dressings may be an important intervention in the arsenal of wound treatment modalities, especially in hard to heal wounds.
Collapse
|
12
|
Antioxidants as an Epidermal Stem Cell Activator. Antioxidants (Basel) 2020; 9:antiox9100958. [PMID: 33036398 PMCID: PMC7600937 DOI: 10.3390/antiox9100958] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/05/2020] [Accepted: 10/05/2020] [Indexed: 01/18/2023] Open
Abstract
Antioxidants may modulate the microenvironment of epidermal stem cells by reducing the production of reactive oxygen species or by regulating the expression of extracellular matrix protein. The extracellular membrane is an important component of the stem cell niche, and microRNAs regulate extracellular membrane-mediated basal keratinocyte proliferation. In this narrative review, we will discuss several antioxidants such as ascorbic acid, plant extracts, peptides and hyaluronic acid, and their effect on the epidermal stem cell niche and the proliferative potential of interfollicular epidermal stem cells in 3D skin equivalent models.
Collapse
|
13
|
Synytsya A, Poučková P, Zadinová M, Troshchynska Y, Štětina J, Synytsya A, Saloň I, Král V. Hydrogels based on low-methoxyl amidated citrus pectin and flaxseed gum formulated with tripeptide glycyl-l-histidyl-l-lysine improve the healing of experimental cutting wounds in rats. Int J Biol Macromol 2020; 165:3156-3168. [PMID: 33031852 DOI: 10.1016/j.ijbiomac.2020.09.251] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 09/06/2020] [Accepted: 09/29/2020] [Indexed: 12/19/2022]
Abstract
Hydrogels based on natural and modified polysaccharides represent growing group of suitable matrices for the construction of effective wound healing materials. Bioactive tripeptide glycyl-l-histidyl-l-lysine and amino acid α-l-arginine are known to accelerate wound healing and skin repair. In this study, hydrogels based on low-methoxyl amidated citrus pectin or flaxseed gum were prepared and used for the transport of these healing agents to the experimental cutting wounds affected by extensive skin damage. Fourier-transform infrared spectroscopy, rheology, differential scanning calorimetry, scanning electron microscopy, swelling and release tests confirmed that these hydrogels differed in structure and physical properties. The cationic tripeptide was found to bind to carboxylic groups in LMA pectin, and the C3OH hydroxyl and ring oxygen O5 are involved in this interaction. The pectin hydrogel showed high viscosity and strong elastic properties, while the flaxseed gum hydrogel was characterised as a viscoelastic system of much lower viscosity. The former hydrogel released the drugs very slowly, while the latter hydrogel demonstrated zero order releasing kinetics optimal for drug delivery. In the in vivo wound healing testing on rats, both polysaccharide hydrogels improved the healing process mediated by the mentioned biomolecules. The tripeptide applied in the hydrogels showed significantly higher healing degree and lower healing time than in the control animals without treatment and when it was applied in an aqueous solution. Despite the absence of a synergistic effect, the mixture of the tripeptide and α-l-arginine in the hydrogels was also quite effective in wound healing. According to histological analysis, complete healing was achieved only when using the tripeptide in the flaxseed gum hydrogel. These observations might have an important prospect in clinical application of polysaccharide hydrogels.
Collapse
Affiliation(s)
- Alla Synytsya
- Department of Analytical Chemistry, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; BIOCEV, 1st Faculty of Medicine, Charles University, Průmyslová 595, 252 50 Vestec, Czech Republic.
| | - Pavla Poučková
- Institute of Biophysics and Informatics, 1st Faculty of Medicine, Charles University, Kateřinská 1660/32, 121 08 Prague 2, Czech Republic
| | - Marie Zadinová
- Institute of Biophysics and Informatics, 1st Faculty of Medicine, Charles University, Kateřinská 1660/32, 121 08 Prague 2, Czech Republic
| | - Yana Troshchynska
- Department of Dairy, Fat and Cosmetics, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; Department of Carbohydrates and Cereals, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jiří Štětina
- Department of Dairy, Fat and Cosmetics, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Andriy Synytsya
- Department of Carbohydrates and Cereals, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ivan Saloň
- Department of Chemical Engineering, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Vladimír Král
- Department of Analytical Chemistry, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; BIOCEV, 1st Faculty of Medicine, Charles University, Průmyslová 595, 252 50 Vestec, Czech Republic
| |
Collapse
|
14
|
Debele TA, Su WP. Polysaccharide and protein-based functional wound dressing materials and applications. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1809403] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tilahun Ayane Debele
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
- Department of Medical Biochemistry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| |
Collapse
|
15
|
Rinaldi F, Trink A, Pinto D. Efficacy of Postbiotics in a PRP-Like Cosmetic Product for the Treatment of Alopecia Area Celsi: A Randomized Double-Blinded Parallel-Group Study. Dermatol Ther (Heidelb) 2020; 10:483-493. [PMID: 32279227 PMCID: PMC7211773 DOI: 10.1007/s13555-020-00369-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION Alopecia areata (AA), also known as 'area Celsi', is the second most common form of hair loss affecting the scalp. Newly proposed treatments for AA include low-level light therapy, biologics such as Janus kinase inhibitors and autologous platelet-rich plasma (PRP), which is a well-known "elixir" for hair growth. Bioactive peptides developed through biotechnological applications have been used to overcome the limitations of PRP. More recently, the involvement of microbiota in hair growth disorders, in AA in particular, has been reported, and the usefulness of microbial metabolites, i.e. postbiotics, has been suggested. METHODS This study was a randomized double-blinded parallel-group study in which 160 persons of both sexes affected by AA and aged between 18 and 60 years were enrolled. The subjects were randomly assigned to a treatment group (group 1), receiving the TR-PRP plus-Celsi cosmetic product, and a placebo group (group 2). The SALT (Severity of Alopecia Tool) score was determined in both groups at baseline and after 2 and 3 months of treatment, and the results compared between groups. RESULTS The subjects in group 1 showed a significant change from baseline in SALT score at 2 months of treatment (61.04% ± 3.45%; p < 0.0001), with a further improvement at the end of treatment (3 months) (69.56% ± 4.32%; p < 0.0001). No significant changes from baseline were reported for the subjects in group 2 (T1: 26.45% ± 3.64%; T3: 27.63% ± 7.61%). CONCLUSIONS The results of this study provide further proof of the efficacy of bioactive peptides that mimick the growth factors present in PRP in subjects affected by AA. They also add to our knowledge of the link between microbiota and hair growth disorders, emphasizing the importance of studies on the microbial community and microbial metabolites as a novel therapeutic approach.
Collapse
Affiliation(s)
- Fabio Rinaldi
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy.
| | - Anna Trink
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy
| | - Daniela Pinto
- Human Advanced Microbiome Project (HMAP), Giuliani SpA, Milan, Italy
| |
Collapse
|
16
|
Liu P, Li Q, Yang Q, Zhang S, Lin C, Zhang G, Tang Z. Three-dimensional cell printing of gingival fibroblast/acellular dermal matrix/gelatin-sodium alginate scaffolds and their biocompatibility evaluation in vitro. RSC Adv 2020; 10:15926-15935. [PMID: 35493638 PMCID: PMC9052548 DOI: 10.1039/d0ra02082f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/15/2020] [Indexed: 11/21/2022] Open
Abstract
Tissue engineering has emerged as a promising approach for soft tissue regeneration. Three-dimensional (3D) cell printing showed great potential for producing cell-encapsulated scaffolds to repair tissue defects. The advantage of 3D cell printing technology is precise cell loading in scaffolds to achieve tissue regeneration instead of only relying on the cells from surrounding tissue or blood. A new acellular dermal matrix/gelatin-sodium alginate (ADM/A/G) scaffold with living gingival fibroblasts was constructed by 3D cell printing technology for potential oral soft tissue regeneration in this study, and the biological characteristics of the 3D cell printing scaffolds were evaluated. The residue of nucleic acid and growth factors in ADM were detected. Three biomaterials were mixed at an appropriate radio with human gingival fibroblasts (hGFs) to prepare bioinks. Two kinds of layer scaffolds were fabricated by 3D cell printing technology. The mechanical strength and degradability of the scaffolds were determined by measuring their compressive modulus and mass loss. CCK-8 assay and calcein-AM/PI staining were conducted to detect the cell proliferation and viability in 3D cell printing scaffolds. The morphology of the hGFs in the scaffolds were observed using SEM and FITC-phalloidin staining. The expression of COL1A1, PECAM1, and VEGF-A of hGFs in the scaffolds were quantified by qRT-PCR. The gelatin-sodium alginate (A/G) scaffolds were used as control group in all experiments. Compared with the control group, 3D cell printing ADM/A/G scaffolds showed better mechanical strength and longer degradation time. The ADM/A/G scaffolds obviously had a better promotion effect on cell proliferation and viability. Most of the hGFs observed had a fully extended spindle morphology in the ADM/A/G scaffolds but oval morphology in the control group. The expression of COL1A1 was significantly higher than in the control group with time, and the expression of PECAM1 and VEGF-A was slightly higher in ADM/A/G scaffolds on day 14. 3D cell printing gingival fibroblast-ADM/A/G scaffolds showed excellent biological properties, which could be potentially useful in oral soft tissue regeneration.
Collapse
Affiliation(s)
- Peng Liu
- Second Clinical Division, Peking University School and Hospital of Stomatology Beijing 100101 P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology Beijing 100081 P. R. China
| | - Qing Li
- Second Clinical Division, Peking University School and Hospital of Stomatology Beijing 100101 P. R. China
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology Beijing 100081 P. R. China
| | - Qiaolin Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology Beijing 100081 P. R. China
| | - Shihan Zhang
- Second Clinical Division, Peking University School and Hospital of Stomatology Beijing 100101 P. R. China
| | - Chunping Lin
- Second Clinical Division, Peking University School and Hospital of Stomatology Beijing 100101 P. R. China
| | - Guifeng Zhang
- State Key Laboratories of Biochemical Engineering, Institute of Process Engineering Beijing 100190 P. R. China
| | - Zhihui Tang
- Second Clinical Division, Peking University School and Hospital of Stomatology Beijing 100101 P. R. China
- National Engineering Laboratory for Digital and Material Technology of Stomatology Beijing 100081 P. R. China
| |
Collapse
|
17
|
Dou Y, Lee A, Zhu L, Morton J, Ladiges W. The potential of GHK as an anti-aging peptide. AGING PATHOBIOLOGY AND THERAPEUTICS 2020; 2:58-61. [PMID: 35083444 PMCID: PMC8789089 DOI: 10.31491/apt.2020.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
GHK (glycyl-L-histidyl-L-lysine) is a naturally occurring peptide found in human serum with levels averaging 200 ng/ml at age 20 but declining to an average of 80 ng/ml by age 60. The molecule has a very high affinity for copper and forms the chelate GHK-Cu. The peptide as well as its Cu (II) chelate have anti-inflammatory and tissue remodeling properties. GHK-Cu has been shown to promote skin remodeling, wound healing and regeneration, and has prominent antioxidant and anti-inflammatory effects in in vitro and in vivo studies. In addition, preliminary observations suggest GHK can partially reverse cognitive impairment in aging mice by targeting anti-inflammatory and epigenetic pathways. The evidence as presented provides the rationale to further investigate this naturally occurring peptide in preclinical and clinical aging studies.
Collapse
Affiliation(s)
- Yan Dou
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Amanda Lee
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Lida Zhu
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - John Morton
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Warren Ladiges
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| |
Collapse
|
18
|
Shah SA, Sohail M, Khan S, Minhas MU, de Matas M, Sikstone V, Hussain Z, Abbasi M, Kousar M. Biopolymer-based biomaterials for accelerated diabetic wound healing: A critical review. Int J Biol Macromol 2019; 139:975-993. [PMID: 31386871 DOI: 10.1016/j.ijbiomac.2019.08.007] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 08/01/2019] [Accepted: 08/01/2019] [Indexed: 02/07/2023]
Abstract
Non-healing, chronic wounds place a huge burden on healthcare systems as well as individual patients. These chronic wounds especially diabetic wounds will ultimately lead to compromised mobility, amputation of limbs and even death. Currently, wounds and limb ulcers associated with diabetes remain significant health issues; the associated healthcare cost ultimately leads to the increased clinical burden. The presence of diabetes interrupts a highly coordinated cascade of events in the wound closure process. Advances in the understanding of pathophysiological conditions associated with diabetic wounds lead to the development of drug delivery systems which can enhance wound healing by targeting various phases of the impaired processes. Wound environments typically contain degradative enzymes, along with an elevated pH and demonstrate a physiological cascade involved in the regeneration of tissue, which requires the application of an effective delivery system. This article aims to review the pathophysiological conditions associated with chronic and diabetic wounds. The delivery systems, involved in their treatment are described, highlighting potential biomaterials and polymers for establishing drug delivery systems, specifically for the treatment of diabetic wounds and the promotion of the associated mechanisms involved in advanced wound healing. Emerging approaches and engineered devices for effective wound care are reported. The discussion will give insight into the mechanisms relevant to all stages of wound healing.
Collapse
Affiliation(s)
- Syed Ahmed Shah
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22060, Pakistan
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22060, Pakistan.
| | - Shahzeb Khan
- Department of Pharmacy, University of Malakand, Lower Dir, KPK, Pakistan; Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409, USA.; Discipline of Pharmaceutical Sciences, School of Health Sciences, UKZN, Durban, South Africa
| | | | - Marcel de Matas
- SEDA Pharmaceutical Development Services, The BioHub at Alderley Park, Cheshire, UK
| | - Victoria Sikstone
- Division of Pharmacy and Optometry, School of Health Sciences, The University of Manchester, UK
| | - Zahid Hussain
- Department of Pharmaceutics & Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Mudassir Abbasi
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22060, Pakistan
| | - Mubeen Kousar
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22060, Pakistan
| |
Collapse
|
19
|
Cho Lee AR. Microneedle-mediated delivery of cosmeceutically relevant nucleoside and peptides in human skin: challenges and strategies for dermal delivery. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-019-00438-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
20
|
Stevenson MJ, Uyeda KS, Harder NHO, Heffern MC. Metal-dependent hormone function: the emerging interdisciplinary field of metalloendocrinology. Metallomics 2019; 11:85-110. [PMID: 30270362 PMCID: PMC10249669 DOI: 10.1039/c8mt00221e] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
For over 100 years, there has been an incredible amount of knowledge amassed concerning hormones in the endocrine system and their central role in human health. Hormones represent a diverse group of biomolecules that are released by glands, communicate signals to their target tissue, and are regulated by feedback loops to maintain organism health. Many disease states, such as diabetes and reproductive disorders, stem from misregulation or dysfunction of hormones. Increasing research is illuminating the intricate roles of metal ions in the endocrine system where they may act advantageously in concert with hormones or deleteriously catalyze hormone-associated disease states. As the critical role of metal ions in the endocrine system becomes more apparent, it is increasingly important to untangle the complex mechanisms underlying the connections between inorganic biochemistry and hormone function to understand and control endocrinological phenomena. This tutorial review harmonizes the interdisciplinary fields of endocrinology and inorganic chemistry in the newly-termed field of "metalloendocrinology". We describe examples linking metals to both normal and aberrant hormone function with a focus on highlighting insight to molecular mechanisms. Hormone activities related to both essential metal micronutrients, such as copper, iron, zinc, and calcium, and disruptive nonessential metals, such as lead and cadmium are discussed.
Collapse
Affiliation(s)
- Michael J Stevenson
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
| | | | | | | |
Collapse
|
21
|
Rinaldi F, Marzani B, Pinto D, Sorbellini E. Randomized controlled trial on a PRP-like cosmetic, biomimetic peptides based, for the treatment of alopecia areata. J DERMATOL TREAT 2018; 30:588-593. [PMID: 30513014 DOI: 10.1080/09546634.2018.1544405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Background: Alopecia areata (AA) is a non-scarring auto-immune hair disorder. Recent researches explained the role of growth factors (GFs) in hair follicle cycling. The main reservoir of GFs are alpha-granules of platelets and novel procedures have been implemented aimed at collecting platelet-rich plasma (PRP). PRP has been safely implemented in many medical applications and has also been successfully used as alternative cell-based therapy for the treatment of hair growth disorders, among which also AA. Objectives: By means of a randomized double-blinded, placebo and active-controlled, parallel group study we have studied the efficacy of a cosmetic product (named TR-M-PRP plus) comprising biomimetic peptides specific for hair growth, mimicking PRP composition for the treatment of AA. Subjects were treated for three months and evaluated, at the end of the study and after one month of follow-up, as regards hair growth using SALT score. Results: TR-M-PRP plus-like topic produced a statistically significant (p < .001) clinical improvement in SALT score after 3 months of therapy, compared to baseline. Hair growth results further improved after 1 month of follow-up. Conclusions: This clinical investigation suggests that the biotechnological designed PRP-like cosmetic could represent a valid and safer alternative to autologous PRP for the treatment of AA.
Collapse
Affiliation(s)
- Fabio Rinaldi
- a International Hair Research Foundation , Milan , Italy
| | | | - Daniela Pinto
- a International Hair Research Foundation , Milan , Italy
| | | |
Collapse
|
22
|
Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci 2018; 19:ijms19071987. [PMID: 29986520 PMCID: PMC6073405 DOI: 10.3390/ijms19071987] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/25/2018] [Accepted: 07/02/2018] [Indexed: 12/22/2022] Open
Abstract
The human peptide GHK (glycyl-l-histidyl-l-lysine) has multiple biological actions, all of which, according to our current knowledge, appear to be health positive. It stimulates blood vessel and nerve outgrowth, increases collagen, elastin, and glycosaminoglycan synthesis, as well as supports the function of dermal fibroblasts. GHK’s ability to improve tissue repair has been demonstrated for skin, lung connective tissue, boney tissue, liver, and stomach lining. GHK has also been found to possess powerful cell protective actions, such as multiple anti-cancer activities and anti-inflammatory actions, lung protection and restoration of chronic obstructive pulmonary disease (COPD) fibroblasts, suppression of molecules thought to accelerate the diseases of aging such as NFκB, anti-anxiety, anti-pain and anti-aggression activities, DNA repair, and activation of cell cleansing via the proteasome system. Recent genetic data may explain such diverse protective and healing actions of one molecule, revealing multiple biochemical pathways regulated by GHK.
Collapse
Affiliation(s)
- Loren Pickart
- R&D Skin Biology; 4122 Factoria Boulevard SE, Suite Number 200, Bellevue, WA 98006, USA.
| | - Anna Margolina
- R&D Skin Biology; 4122 Factoria Boulevard SE, Suite Number 200, Bellevue, WA 98006, USA.
| |
Collapse
|
23
|
Zhou XM, Wang GL, Wang XB, Liu L, Zhang Q, Yin Y, Wang QY, Kang J, Hou G. GHK Peptide Inhibits Bleomycin-Induced Pulmonary Fibrosis in Mice by Suppressing TGFβ1/Smad-Mediated Epithelial-to-Mesenchymal Transition. Front Pharmacol 2017; 8:904. [PMID: 29311918 PMCID: PMC5733019 DOI: 10.3389/fphar.2017.00904] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 11/28/2017] [Indexed: 12/21/2022] Open
Abstract
Objective: Idiopathic pulmonary fibrosis is an irreversible and progressive fibrotic lung disease that leads to declines in pulmonary function and, eventually, respiratory failure and has no effective treatment. Gly-His-Lys (GHK) is a tripeptide involved in the processes of tissue regeneration and wound healing and has significant inhibitory effects on transforming growth factor (TGF)-β1 secretion. The effect of GHK on fibrogenesis in pulmonary fibrosis and the exact underlying mechanism have not been studied previously. Thus, this study investigated the effects of GHK on bleomycin (BLM)-induced fibrosis and identified the pathway that is potentially responsible for these effects. Methods: Intratracheal injections of 3 mg/kg BLM were administered to induce pulmonary fibrosis in C57BL/6 mice. GHK was administered intraperitoneally at doses of 2.6, 26, and 260 μg/ml/day every other day from the 4th to the 21st day after BLM instillation. Three weeks after BLM instillation, pulmonary injury and pulmonary fibrosis was evaluated by the hematoxylin-eosin (HE) and Masson’s trichrome (MT) staining. Chronic inflammation index was used for the histological assessments by two pathologists blindly to each other. Tumor necrosis factor (TNF)-α and IL-6 levels in BALF and myeloperoxidase (MPO) activity in lung extracts were measured. For the pulmonary fibrosis evaluation, the fibrosis index calculated based on MT staining, collagen deposition and active TGF-β1 expression detected by ELISA, and the expression of TGF-β1, α-smooth muscle actin (SMA), fibronectin, MMP-9, and TIMP-1 by western blotting. The epithelial mesenchymal transition index, E-cadherin, and vimentin was also detected by western blot. The statistical analysis was performed by one-way ANOVA and the comparison between different groups were performed. Results: Treatment with GHK at all three doses reduced inflammatory cell infiltration and interstitial thickness and attenuated BLM-induced pulmonary fibrosis in mice. GHK treatment significantly improved collagen deposition, and MMP-9/TIMP-1 imbalances in lung tissue and also reduced TNF-α, IL-6 expression in bronchoalveolar lavage fluid (BALF) and MPO in lung extracts. Furthermore, GHK reversed BLM-induced increases in TGF-β1, p-Smad2, p-Smad-3 and insulin-like growth factor-1 (IGF-1) expression. Conclusion: GHK inhibits BLM-induced fibrosis progression, the inflammatory response and EMT via the TGF-β1/Smad 2/3 and IGF-1 pathway. Thus, GHK may be a potential treatment for pulmonary fibrosis.
Collapse
Affiliation(s)
- Xiao-Ming Zhou
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Gui-Liang Wang
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Xiao-Bo Wang
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Li Liu
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Qin Zhang
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Yan Yin
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Qiu-Yue Wang
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Jian Kang
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Gang Hou
- Department of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, China
| |
Collapse
|
24
|
Abul-Haija YM, Scott GG, Sahoo JK, Tuttle T, Ulijn RV. Cooperative, ion-sensitive co-assembly of tripeptide hydrogels. Chem Commun (Camb) 2017; 53:9562-9565. [DOI: 10.1039/c7cc04796g] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Computational simulations and experimental validation of cooperative co-assembly of structural and functional tripeptides shows selective hydrogel formation in response to complexation with copper.
Collapse
Affiliation(s)
- Yousef M. Abul-Haija
- WestCHEM/Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL
- UK
- WestCHEM/School of Chemistry
| | - Gary G. Scott
- WestCHEM/Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL
- UK
| | - Jugal Kishore Sahoo
- WestCHEM/Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL
- UK
| | - Tell Tuttle
- WestCHEM/Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL
- UK
| | - Rein V. Ulijn
- WestCHEM/Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL
- UK
- Advanced Science Research Center (ASRC) at the Graduate Center of the City University of New York (CUNY)
| |
Collapse
|
25
|
Bagheri Varzaneh M, Rahmani H, Jahanian R, Mahdavi AH, Perreau C, Perrot G, Brézillon S, Maquart FX. Effects of Dietary Copper-Methionine on Matrix Metalloproteinase-2 in the Lungs of Cold-Stressed Broilers as an Animal Model for Pulmonary Hypertension. Biol Trace Elem Res 2016; 172:504-510. [PMID: 26749413 DOI: 10.1007/s12011-015-0612-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 12/28/2015] [Indexed: 02/04/2023]
Abstract
The objective of the present study was to investigate the effects of different levels of copper (as supplemental copper-methionine) on ascites incidence and matrix metalloproteinase-2 (MMP-2) changes in the lungs of cold-stressed broilers. For this purpose, 480 1-day-old Ross 308 broiler chickens were randomly assigned to six treatments. Treatments consisted of two ambient temperatures (thermoneutral and cold stress) each combined with 0, 100, and 200 mg supplemental copper/kg as copper-methionine in a 2 × 3 factorial arrangement in a completely randomized design with four replicates. Ascites was diagnosed based on abdominal and pericardial fluid accumulation at 45 days of age. Fourty-eight broilers were killed at 38 and 45 days of age, and their lungs were collected for biological analysis. Results showed that MMP-2 increased in the lungs of ascitic broilers and that copper-methionine supplementation significantly reduced MMP-2 in cold-stressed broiler chickens. Treatments did not affect tissue inhibitor of metalloproteinase-2 (TIMP-2) at 38 and 45 days of age, and no difference was observed between 100 and 200 mg/kg copper-methionine treatments. In conclusion, copper-methionine at higher than conventional levels of supplementation decreased ascites incidence in low temperature through reduced MMP-2 concentration. Further research is warranted to investigate the effect of copper on MMP-2 concentrations in other tissues with high oxygen demand.
Collapse
Affiliation(s)
- Mina Bagheri Varzaneh
- Department of Animal Sciences, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
- Unité de Recherche "Matrice Extracellulaire et Dynamique Cellulaire" (MEDyC), UMR CNRS/URCA NO 7369, Faculté de Médecine de Reims, 51095, Reims Cedex, France.
| | - Hamidreza Rahmani
- Department of Animal Sciences, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Rahman Jahanian
- Department of Animal Sciences, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Amir Hossein Mahdavi
- Department of Animal Sciences, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Corinne Perreau
- Unité de Recherche "Matrice Extracellulaire et Dynamique Cellulaire" (MEDyC), UMR CNRS/URCA NO 7369, Faculté de Médecine de Reims, 51095, Reims Cedex, France
| | - Gwenn Perrot
- Unité de Recherche "Matrice Extracellulaire et Dynamique Cellulaire" (MEDyC), UMR CNRS/URCA NO 7369, Faculté de Médecine de Reims, 51095, Reims Cedex, France
| | - Stéphane Brézillon
- Unité de Recherche "Matrice Extracellulaire et Dynamique Cellulaire" (MEDyC), UMR CNRS/URCA NO 7369, Faculté de Médecine de Reims, 51095, Reims Cedex, France
| | - François-Xavier Maquart
- Unité de Recherche "Matrice Extracellulaire et Dynamique Cellulaire" (MEDyC), UMR CNRS/URCA NO 7369, Faculté de Médecine de Reims, 51095, Reims Cedex, France
- CHU de Reims, Laboratoire Central de Biochimie, 51092, Reims Cedex, France
| |
Collapse
|
26
|
Husein el Hadmed H, Castillo RF. Cosmeceuticals: peptides, proteins, and growth factors. J Cosmet Dermatol 2016; 15:514-519. [DOI: 10.1111/jocd.12229] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2016] [Indexed: 01/27/2023]
|
27
|
Tracy LE, Minasian RA, Caterson E. Extracellular Matrix and Dermal Fibroblast Function in the Healing Wound. Adv Wound Care (New Rochelle) 2016; 5:119-136. [PMID: 26989578 DOI: 10.1089/wound.2014.0561] [Citation(s) in RCA: 555] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Significance: Fibroblasts play a critical role in normal wound healing. Various extracellular matrix (ECM) components, including collagens, fibrin, fibronectin, proteoglycans, glycosaminoglycans, and matricellular proteins, can be considered potent protagonists of fibroblast survival, migration, and metabolism. Recent Advances: Advances in tissue culture, tissue engineering, and ex vivo models have made the examination and precise measurements of ECM components in wound healing possible. Likewise, the development of specific transgenic animal models has created the opportunity to characterize the role of various ECM molecules in healing wounds. In addition, the recent characterization of new ECM molecules, including matricellular proteins, dermatopontin, and FACIT collagens (Fibril-Associated Collagens with Interrupted Triple helices), further demonstrates our cursory knowledge of the ECM in coordinated wound healing. Critical Issues: The manipulation and augmentation of ECM components in the healing wound is emerging in patient care, as demonstrated by the use of acellular dermal matrices, tissue scaffolds, and wound dressings or topical products bearing ECM proteins such as collagen, hyaluronan (HA), or elastin. Once thought of as neutral structural proteins, these molecules are now known to directly influence many aspects of cellular wound healing. Future Directions: The role that ECM molecules, such as CCN2, osteopontin, and secreted protein, acidic and rich in cysteine, play in signaling homing of fibroblast progenitor cells to sites of injury invites future research as we continue investigating the heterotopic origin of certain populations of fibroblasts in a healing wound. Likewise, research into differently sized fragments of the same polymeric ECM molecule is warranted as we learn that fragments of molecules such as HA and tenascin-C can have opposing effects on dermal fibroblasts.
Collapse
Affiliation(s)
- Lauren E. Tracy
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raquel A. Minasian
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - E.J. Caterson
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
28
|
Kukowska M, Pikuła M, Kukowska-Kaszuba M, Schumacher A, Dzierzbicka K, Trzonkowski P. Synthetic lipopeptides as potential topical therapeutics in wound and skin care: in vitro studies of permeation and skin cells behaviour. RSC Adv 2016. [DOI: 10.1039/c6ra24424f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Wound healing is an extraordinarily complicated process associating with the cell aging, slowing down of cell renewal mechanism and even loss of protective function to environmentally induced oxidative stress.
Collapse
Affiliation(s)
- Monika Kukowska
- Department of Organic Chemistry
- Faculty of Chemistry
- Gdansk University of Technology
- 80-233 Gdańsk
- Poland
| | - Michał Pikuła
- Department of Clinical Immunology and Transplantology
- Faculty of Medicine
- Medical University of Gdansk
- 80-211 Gdańsk
- Poland
| | | | - Adriana Schumacher
- Department of Clinical Immunology and Transplantology
- Faculty of Medicine
- Medical University of Gdansk
- 80-211 Gdańsk
- Poland
| | - Krystyna Dzierzbicka
- Department of Organic Chemistry
- Faculty of Chemistry
- Gdansk University of Technology
- 80-233 Gdańsk
- Poland
| | - Piotr Trzonkowski
- Department of Clinical Immunology and Transplantology
- Faculty of Medicine
- Medical University of Gdansk
- 80-211 Gdańsk
- Poland
| |
Collapse
|
29
|
Urso E, Maffia M. Behind the Link between Copper and Angiogenesis: Established Mechanisms and an Overview on the Role of Vascular Copper Transport Systems. J Vasc Res 2015; 52:172-96. [PMID: 26484858 DOI: 10.1159/000438485] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 07/07/2015] [Indexed: 11/19/2022] Open
Abstract
Angiogenesis critically sustains the progression of both physiological and pathological processes. Copper behaves as an obligatory co-factor throughout the angiogenic signalling cascades, so much so that a deficiency causes neovascularization to abate. Moreover, the progress of several angiogenic pathologies (e.g. diabetes, cardiac hypertrophy and ischaemia) can be tracked by measuring serum copper levels, which are being increasingly investigated as a useful prognostic marker. Accordingly, the therapeutic modulation of body copper has been proven effective in rescuing the pathological angiogenic dysfunctions underlying several disease states. Vascular copper transport systems profoundly influence the activation and execution of angiogenesis, acting as multi-functional regulators of apparently discrete pro-angiogenic pathways. This review concerns the complex relationship among copper-dependent angiogenic factors, copper transporters and common pathological conditions, with an unusual accent on the multi-faceted involvement of the proteins handling vascular copper. Functions regulated by the major copper transport proteins (CTR1 importer, ATP7A efflux pump and metallo-chaperones) include the modulation of endothelial migration and vascular superoxide, known to activate angiogenesis within a narrow concentration range. The potential contribution of prion protein, a controversial regulator of copper homeostasis, is discussed, even though its angiogenic involvement seems to be mainly associated with the modulation of endothelial motility and permeability.
Collapse
Affiliation(s)
- Emanuela Urso
- Department of Biological and Environmental Science and Technologies, University of Salento, Lecce, Italy
| | | |
Collapse
|
30
|
GHK-Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes. COSMETICS 2015. [DOI: 10.3390/cosmetics2030236] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
|
31
|
GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BIOMED RESEARCH INTERNATIONAL 2015; 2015:648108. [PMID: 26236730 PMCID: PMC4508379 DOI: 10.1155/2015/648108] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 03/17/2015] [Accepted: 04/09/2015] [Indexed: 01/10/2023]
Abstract
GHK (glycyl-L-histidyl-L-lysine) is present in human plasma, saliva, and urine but declines with age. It is proposed that GHK functions as a complex with copper 2+ which accelerates wound healing and skin repair. GHK stimulates both synthesis and breakdown of collagen and glycosaminoglycans and modulates the activity of both metalloproteinases and their inhibitors. It stimulates collagen, dermatan sulfate, chondroitin sulfate, and the small proteoglycan, decorin. It also restores replicative vitality to fibroblasts after radiation therapy. The molecule attracts immune and endothelial cells to the site of an injury. It accelerates wound-healing of the skin, hair follicles, gastrointestinal tract, boney tissue, and foot pads of dogs. It also induces systemic wound healing in rats, mice, and pigs. In cosmetic products, it has been found to tighten loose skin and improve elasticity, skin density, and firmness, reduce fine lines and wrinkles, reduce photodamage, and hyperpigmentation, and increase keratinocyte proliferation. GHK has been proposed as a therapeutic agent for skin inflammation, chronic obstructive pulmonary disease, and metastatic colon cancer. It is capable of up- and downregulating at least 4,000 human genes, essentially resetting DNA to a healthier state. The present review revisits GHK's role in skin regeneration in the light of recent discoveries.
Collapse
|
32
|
Fu SC, Cheuk YC, Chiu WYV, Yung SH, Rolf CG, Chan KM. Tripeptide-copper complex GHK-Cu (II) transiently improved healing outcome in a rat model of ACL reconstruction. J Orthop Res 2015; 33:1024-33. [PMID: 25731775 DOI: 10.1002/jor.22831] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 01/15/2014] [Indexed: 02/04/2023]
Abstract
After anterior cruciate ligament reconstruction (ACLR), the biological healing of the graft is a rate-limiting step which can contribute to graft failure. The tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu(II) (GHK-Cu) is a well-known activator of tissue remodeling. We investigated whether GHK-Cu can improve graft healing following ACLR. Seventy-two rats underwent unilateral ACLR were randomized to saline, 0.3 or 3 mg/ml GHK-Cu groups (n = 24). Post-operational intra-articular injections were given from week 2, once a week, for 4 weeks. Gait analysis was performed pre-injury and at harvesting time. At 6 or 12 weeks post-operation, knee specimens were harvested for knee laxity test, graft pull-out test, and histology. At 6 weeks post-ACLR, GHK-Cu groups resulted in a smaller side-to-side difference in knee laxity as compared to the saline group (p = 0.009), but there was no significant difference at 12 weeks post-operation. The graft complex in the 0.3 mg/ml GHK-Cu group had higher stiffness than saline group at 6 weeks post-operation (p = 0.026), but there was no significant difference in ultimate load, gait parameters, and histological scores among treatment groups. All grafts failed mid-substance during pull-out test. Intra-articular supplementation with a bioactive small molecule GHK-Cu improved graft healing following ACLR in rat, but the beneficial effects could not last as treatment discontinued.
Collapse
Affiliation(s)
- Sai-Chuen Fu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Yau-Chuk Cheuk
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Wai-Yin Vivien Chiu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Shu-Hang Yung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Christer G Rolf
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Division of Orthopedics and Biotechnology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Kai-Ming Chan
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.,Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| |
Collapse
|
33
|
Li H, Low YSJ, Chong HP, Zin MT, Lee CY, Li B, Leolukman M, Kang L. Microneedle-Mediated Delivery of Copper Peptide Through Skin. Pharm Res 2015; 32:2678-89. [PMID: 25690343 DOI: 10.1007/s11095-015-1652-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 02/05/2015] [Indexed: 12/12/2022]
Abstract
PURPOSE Copper peptide (GHK-Cu) plays an important role in skin regeneration and wound healing. However, its skin absorption remains challenging due to its hydrophilicity. Here we use polymeric microneedle array to pre-treat skin to enhance GHK-Cu skin penetration. METHODS Two in vitro skin models were used to assess the capability of microneedles in facilitating skin delivery of GHK-Cu. Histological assay and confocal laser scanning microscopy were performed to characterize and quantify the microconduits created by the microneedles inside skin. Cellular and porcine models were used to evaluate the safety of microneedle-assisted copper peptide delivery. RESULTS The depth and percentage of microneedle penetration were correlated with application forces, which in turn influenced the extent of enhancement in the skin permeability of GHK-Cu. In 9 h, 134 ± 12 nanomoles of peptide and 705 ± 84 nanomoles of copper permeated though the microneedle treated human skin, while almost no peptide or copper permeated through intact human skin. No obvious signs of skin irritation were observed with the use of GHK-Cu after microneedle pretreatment. CONCLUSIONS It is effective and safe to enhance the skin permeation of GHK-Cu by using microneedles. This approach may be useful to deliver similar peptides or minerals through skin.
Collapse
Affiliation(s)
- Hairui Li
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore, Singapore, 117543
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Maquart F, Monboisse J. Extracellular matrix and wound healing. ACTA ACUST UNITED AC 2014; 62:91-5. [DOI: 10.1016/j.patbio.2014.02.007] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 02/17/2014] [Indexed: 11/30/2022]
|
35
|
Cheung HK, Han TTY, Marecak DM, Watkins JF, Amsden BG, Flynn LE. Composite hydrogel scaffolds incorporating decellularized adipose tissue for soft tissue engineering with adipose-derived stem cells. Biomaterials 2013; 35:1914-23. [PMID: 24331712 DOI: 10.1016/j.biomaterials.2013.11.067] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 11/21/2013] [Indexed: 12/18/2022]
Abstract
An injectable tissue-engineered adipose substitute that could be used to deliver adipose-derived stem cells (ASCs), filling irregular defects and stimulating natural soft tissue regeneration, would have significant value in plastic and reconstructive surgery. With this focus, the primary aim of the current study was to characterize the response of human ASCs encapsulated within three-dimensional bioscaffolds incorporating decellularized adipose tissue (DAT) as a bioactive matrix within photo-cross-linkable methacrylated glycol chitosan (MGC) or methacrylated chondroitin sulphate (MCS) delivery vehicles. Stable MGC- and MCS-based composite scaffolds were fabricated containing up to 5 wt% cryomilled DAT through initiation with long-wavelength ultraviolet light. The encapsulation strategy allows for tuning of the 3-D microenvironment and provides an effective method of cell delivery with high seeding efficiency and uniformity, which could be adapted as a minimally-invasive in situ approach. Through in vitro cell culture studies, human ASCs were assessed over 14 days in terms of viability, glycerol-3-phosphate dehydrogenase (GPDH) enzyme activity, adipogenic gene expression and intracellular lipid accumulation. In all of the composites, the DAT functioned as a cell-supportive matrix that enhanced ASC viability, retention and adipogenesis within the gels. The choice of hydrogel also influenced the cell response, with significantly higher viability and adipogenic differentiation observed in the MCS composites containing 5 wt% DAT. In vivo analysis in a subcutaneous Wistar rat model at 1, 4 and 12 weeks showed superior implant integration and adipogenesis in the MCS-based composites, with allogenic ASCs promoting cell infiltration, angiogenesis and ultimately, fat formation.
Collapse
Affiliation(s)
- Hoi Ki Cheung
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, Ontario, Canada K7L 3N6; Human Mobility Research Centre, Kingston General Hospital, 76 Stuart Street, Kingston, Ontario, Canada K7L 2V7
| | - Tim Tian Y Han
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, Ontario, Canada K7L 3N6; Human Mobility Research Centre, Kingston General Hospital, 76 Stuart Street, Kingston, Ontario, Canada K7L 2V7
| | - Dale M Marecak
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, Ontario, Canada K7L 3N6; Human Mobility Research Centre, Kingston General Hospital, 76 Stuart Street, Kingston, Ontario, Canada K7L 2V7
| | - John F Watkins
- Department of Surgery, Queen's University, 166 Brock Street, Kingston, Ontario, Canada K7L 5G2
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, Ontario, Canada K7L 3N6; Human Mobility Research Centre, Kingston General Hospital, 76 Stuart Street, Kingston, Ontario, Canada K7L 2V7
| | - Lauren E Flynn
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, Ontario, Canada K7L 3N6; Human Mobility Research Centre, Kingston General Hospital, 76 Stuart Street, Kingston, Ontario, Canada K7L 2V7; Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, Ontario, Canada K7L 3N6.
| |
Collapse
|
36
|
Juneja SC. Cellular distribution and gene expression profile during flexor tendon graft repair: A novel tissue engineering approach(*). J Tissue Eng 2013; 4:2041731413492741. [PMID: 23762501 PMCID: PMC3677358 DOI: 10.1177/2041731413492741] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
To understand scar and adhesion formation during postsurgical period of intrasynovial tendon graft healing, a murine model of flexor digitorum longus tendon graft repair was developed, by utilizing flexor digitorum longus tendon allograft from donor Rosa26/+ mouse, and the healing process at days 3, 7, 14, 21, 28, and 35 post surgery of host wild-type mouse was followed. Using X-gal staining, β-galactosidase positive cells of allograft origin were detectable in tissue sections of grafted tendon post surgery. Graft healing was assessed for the cellular density, scar and adhesion formation, and their interaction with surrounding tissue. From histological analysis, it was evident that the healing of intrasynovial flexor digitorum longus tendon graft takes place in an interactive environment of donor graft, host tendon, and host surrounding tissue. A total of 32 genes, analyzed by RNA analysis, expressed during healing process. Particularly, Alk1, Postn, Tnc, Tppp3, and Mkx will be further investigated for therapeutical value in reducing scars and adhesions.
Collapse
Affiliation(s)
- Subhash C Juneja
- The Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA ; Division of Orthopaedic Surgery, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
| |
Collapse
|
37
|
Propolis induces chondroitin/dermatan sulphate and hyaluronic Acid accumulation in the skin of burned wound. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:290675. [PMID: 23533471 PMCID: PMC3606753 DOI: 10.1155/2013/290675] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 02/09/2013] [Indexed: 01/15/2023]
Abstract
Changes in extracellular matrix glycosaminoglycans during the wound repair allowed us to apply the burn model in which therapeutic efficacy of propolis and silver sulfadiazine was compared. Burns were inflicted on four pigs. Glycosaminoglycans isolated from healthy and burned skin were quantified using a hexuronic acid assay, electrophoretic fractionation, and densitometric analyses. Using the reverse-phase HPLC the profile of sulfated disaccharides released by chondroitinase ABC from chondroitin/dermatan sulfates was estimated. Chondroitin/dermatan sulfates and hyaluronic acid were found in all samples. Propolis stimulated significant changes in the content of particular glycosaminoglycan types during burn healing. Glycosaminoglycans alterations after silver sulfadiazine application were less expressed. Propolis maintained high contribution of 4-O-sulfated disaccharides to chondroitin/dermatan sulfates structure and low level of 6-O-sulfated ones throughout the observed period of healing. Propolis led to preservation of significant contribution of disulfated disaccharides especially 2,4-O-disulfated ones to chondroitin sulfates/dermatan sulfates structure throughout the observed period of healing. Our findings demonstrate that propolis accelerates the burned tissue repair by stimulation of the wound bed glycosaminoglycan accumulation needed for granulation, tissue growth, and wound closure. Moreover, propolis accelerates chondroitin/dermatan sulfates structure modification responsible for binding growth factors playing the crucial role in the tissue repair.
Collapse
|
38
|
|
39
|
Campbell JD, McDonough JE, Zeskind JE, Hackett TL, Pechkovsky DV, Brandsma CA, Suzuki M, Gosselink JV, Liu G, Alekseyev YO, Xiao J, Zhang X, Hayashi S, Cooper JD, Timens W, Postma DS, Knight DA, Lenburg ME, Hogg JC, Spira A. A gene expression signature of emphysema-related lung destruction and its reversal by the tripeptide GHK. Genome Med 2012; 4:67. [PMID: 22937864 PMCID: PMC4064320 DOI: 10.1186/gm367] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 08/14/2012] [Accepted: 08/16/2012] [Indexed: 01/08/2023] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease consisting of emphysema, small airway obstruction, and/or chronic bronchitis that results in significant loss of lung function over time. Methods In order to gain insights into the molecular pathways underlying progression of emphysema and explore computational strategies for identifying COPD therapeutics, we profiled gene expression in lung tissue samples obtained from regions within the same lung with varying amounts of emphysematous destruction from smokers with COPD (8 regions × 8 lungs = 64 samples). Regional emphysema severity was quantified in each tissue sample using the mean linear intercept (Lm) between alveolar walls from micro-CT scans. Results We identified 127 genes whose expression levels were significantly associated with regional emphysema severity while controlling for gene expression differences between individuals. Genes increasing in expression with increasing emphysematous destruction included those involved in inflammation, such as the B-cell receptor signaling pathway, while genes decreasing in expression were enriched in tissue repair processes, including the transforming growth factor beta (TGFβ) pathway, actin organization, and integrin signaling. We found concordant differential expression of these emphysema severity-associated genes in four cross-sectional studies of COPD. Using the Connectivity Map, we identified GHK as a compound that can reverse the gene-expression signature associated with emphysematous destruction and induce expression patterns consistent with TGFβ pathway activation. Treatment of human fibroblasts with GHK recapitulated TGFβ-induced gene-expression patterns, led to the organization of the actin cytoskeleton, and elevated the expression of integrin β1. Furthermore, addition of GHK or TGFβ restored collagen I contraction and remodeling by fibroblasts derived from COPD lungs compared to fibroblasts from former smokers without COPD. Conclusions These results demonstrate that gene-expression changes associated with regional emphysema severity within an individual's lung can provide insights into emphysema pathogenesis and identify novel therapeutic opportunities for this deadly disease. They also suggest the need for additional studies to examine the mechanisms by which TGFβ and GHK each reverse the gene-expression signature of emphysematous destruction and the effects of this reversal on disease progression.
Collapse
Affiliation(s)
- Joshua D Campbell
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street, Boston, MA 02215, USA
| | - John E McDonough
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Julie E Zeskind
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street, Boston, MA 02215, USA
| | - Tillie L Hackett
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Dmitri V Pechkovsky
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Corry-Anke Brandsma
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 Groningen, Netherlands
| | - Masaru Suzuki
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - John V Gosselink
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Gang Liu
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA
| | - Yuriy O Alekseyev
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA
| | - Ji Xiao
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA
| | - Xiaohui Zhang
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA
| | - Shizu Hayashi
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Joel D Cooper
- Hospital of the University of Pennsylvania, Division of Thoracic Surgery, 3400 Spruce Street 6 White Building, Philadelphia, PA 19104, USA
| | - Wim Timens
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 Groningen, Netherlands
| | - Dirkje S Postma
- Department of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 Groningen, Netherlands
| | - Darryl A Knight
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Marc E Lenburg
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street, Boston, MA 02215, USA
| | - James C Hogg
- UBC James Hogg Research Centre, Providence Heart + Lung Institute, St. Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Avrum Spira
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street, Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street, Boston, MA 02215, USA
| |
Collapse
|
40
|
The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:324832. [PMID: 22666519 PMCID: PMC3359723 DOI: 10.1155/2012/324832] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 02/27/2012] [Indexed: 11/25/2022]
Abstract
Oxidative stress, disrupted copper homeostasis, and neuroinflammation due to overproduction of proinflammatory cytokines are considered leading causative factors in development of age-associated neurodegenerative conditions. Recently, a new mechanism of aging—detrimental epigenetic modifications—has emerged. Thus, compounds that possess antioxidant, anti-inflammatory activity as well as compounds capable of restoring copper balance and proper gene functioning may be able to prevent age-associated cognitive decline and ward off many common neurodegenerative conditions. The aim of this paper is to bring attention to a compound with a long history of safe use in wound healing and antiaging skin care. The human tripeptide GHK was discovered in 1973 as an activity in human albumin that caused old human liver tissue to synthesize proteins like younger tissue. It has high affinity for copper ions and easily forms a copper complex or GHK-Cu. In addition, GHK possesses a plethora of other regenerative and protective actions including antioxidant, anti-inflammatory, and wound healing properties. Recent studies revealed its ability to up- and downregulate a large number of human genes including those that are critical for neuronal development and maintenance. We propose GHK tripeptide as a possible therapeutic agent against age-associated neurodegeneration and cognitive decline.
Collapse
|
41
|
Pickart L. The human tri-peptide GHK and tissue remodeling. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 19:969-88. [DOI: 10.1163/156856208784909435] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Loren Pickart
- a Skin Biology, 4122 Factoria Boulevard, Suite 200, Bellevue, WA 98006, USA
| |
Collapse
|
42
|
Oh JH, Kim YK, Jung JY, Shin JE, Kim KH, Cho KH, Eun HC, Chung JH. Intrinsic aging- and photoaging-dependent level changes of glycosaminoglycans and their correlation with water content in human skin. J Dermatol Sci 2011; 62:192-201. [DOI: 10.1016/j.jdermsci.2011.02.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 02/07/2011] [Accepted: 02/21/2011] [Indexed: 10/18/2022]
|
43
|
Ohto-Fujita E, Konno T, Shimizu M, Ishihara K, Sugitate T, Miyake J, Yoshimura K, Taniwaki K, Sakurai T, Hasebe Y, Atomi Y. Hydrolyzed eggshell membrane immobilized on phosphorylcholine polymer supplies extracellular matrix environment for human dermal fibroblasts. Cell Tissue Res 2011; 345:177-90. [PMID: 21597915 PMCID: PMC3132421 DOI: 10.1007/s00441-011-1172-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Accepted: 04/05/2011] [Indexed: 12/20/2022]
Abstract
We have found that a water-soluble alkaline-digested form of eggshell membrane (ASESM) can provide an extracellular matrix (ECM) environment for human dermal fibroblast cells (HDF) in vitro. Avian eggshell membrane (ESM) has a fibrous-meshwork structure and has long been utilized as a Chinese medicine for recovery from burn injuries and wounds in Asian countries. Therefore, ESM is expected to provide an excellent natural material for biomedical use. However, such applications have been hampered by the insolubility of ESM proteins. We have used a recently developed artificial cell membrane biointerface, 2-methacryloyloxyethyl phosphorylcholine polymer (PMBN) to immobilize ASESM proteins. The surface shows a fibrous structure under the atomic force microscope, and adhesion of HDF to ASESM is ASESM-dose-dependent. Quantitative mRNA analysis has revealed that the expression of type III collagen, matrix metalloproteinase-2, and decorin mRNAs is more than two-fold higher when HDF come into contact with a lower dose ASESM proteins immobilized on PMBN surface. A particle-exclusion assay with fixed erythrocytes has visualized secreted water-binding molecules around the cells. Thus, HDF seems to possess an ECM environment on the newly designed PMBN-ASESM surface, and future applications of the ASESM-PMBN system for biomedical use should be of great interest.
Collapse
Affiliation(s)
- Eri Ohto-Fujita
- Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Varvaresou A, Papageorgiou S, Protopapa E, Katsarou A. Efficacy and Tolerance Study of an Oligopeptide with Potential Anti-Aging Activity. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/jcdsa.2011.14020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
45
|
Slavkovsky R, Kohlerova R, Jiroutova A, Hajzlerova M, Sobotka L, Cermakova E, Kanta J. Effects of hyaluronan and iodine on wound contraction and granulation tissue formation in rat skin wounds. Clin Exp Dermatol 2010; 35:373-9. [DOI: 10.1111/j.1365-2230.2009.03559.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
46
|
Hamidi AS, Kazemi SY, Zolgharnein J. Highly Efficient and Selective Transport of Cu(II) with a Cooperative Carrier Composed of Tetraaza-14-Crown-4 and Oleic Acid through a Bulk Liquid Membrane. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496390903256117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Akram Sadat Hamidi
- a Department of Chemistry , Faculty of Science, Arak University , Arak, Iran
| | - Sayed Yahya Kazemi
- b Department of Basic Sciences , Sari Agricultural Sciences and Natural Resources University , Sari, Iran
| | - Javad Zolgharnein
- a Department of Chemistry , Faculty of Science, Arak University , Arak, Iran
| |
Collapse
|
47
|
Abstract
In the cosmetic arena, many materials are used commercially and claim to provide skin effects (eg, antiaging effects) when used topically. Considering there are so many such materials and many skin appearance effects are encompassed, this short contribution must, by necessity, be selective in terms of the number of materials discussed and the depth with which any particular material is overviewed. This presentation, therefore, focuses on only 10 types of cosmeceutical agents: five vitamins (A, B(3), C, E, panthenol), peptides, hydroxyl acids, sugar amines, ceramides, and metals. In particular, this contribution concentrates on those materials for which there are available clinical data that support a reported skin appearance improvement effect.
Collapse
|
48
|
|
49
|
Zou XH, Jiang YZ, Zhang GR, Jin HM, Hieu NTM, Ouyang HW. Specific interactions between human fibroblasts and particular chondroitin sulfate molecules for wound healing. Acta Biomater 2009; 5:1588-95. [PMID: 19141373 DOI: 10.1016/j.actbio.2008.12.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Revised: 11/30/2008] [Accepted: 12/03/2008] [Indexed: 10/21/2022]
Abstract
The chondroitin sulfates (CSs) constitute an important group of biomacromolecules in the extracellular matrix. However, limited information is available about their specific biological functions. This study aimed to define the interactions between cells and various types of CS. The effects of CSs on cellular activities and the cell cycle were evaluated using cell culture, RNA interference, real-time polymerase chain reaction, flow cytometry, wound healing and contraction models. The results showed that C-6-S promoted both cell proliferation and adhesion, while C-4-S promoted proliferation but inhibited adhesion. Moreover, knockdown of chondroitin inhibited cell proliferation and migration, as well as arresting cells in the G(2)/M phase. Also, both C-4-S and C-6-S promoted wound closure in a two-dimensional wound model, whereas only C-6-S inhibited wound contraction in a three-dimensional wound model. This study illustrates that the interaction between cells and different CSs are specific and sulfate-group-dependent. These findings provide useful information for better applications of CSs for wound healing.
Collapse
|
50
|
Copper–GHK increases integrin expression and p63 positivity by keratinocytes. Arch Dermatol Res 2009; 301:301-6. [DOI: 10.1007/s00403-009-0942-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Revised: 02/27/2009] [Accepted: 03/09/2009] [Indexed: 01/14/2023]
|