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Manole CG, Voiculescu VM, Soare C, Ceafalan LC, Gherghiceanu M, Hinescu ME. Skin Telocytes Could Fundament the Cellular Mechanisms of Wound Healing in Platelet-Rich Plasma Administration. Cells 2024; 13:1321. [PMID: 39195210 DOI: 10.3390/cells13161321] [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: 06/12/2024] [Revised: 07/28/2024] [Accepted: 08/01/2024] [Indexed: 08/29/2024] Open
Abstract
For more than 40 years, autologous platelet concentrates have been used in clinical medicine. Since the first formula used, namely platelet-rich plasma (PRP), other platelet concentrates have been experimented with, including platelet-rich fibrin and concentrated growth factor. Platelet concentrates have three standard characteristics: they act as scaffolds, they serve as a source of growth factors and cytokines, and they contain live cells. PRP has become extensively used in regenerative medicine for the successful treatment of a variety of clinical (non-)dermatological conditions like alopecies, acne scars, skin burns, skin ulcers, muscle, cartilage, and bone repair, and as an adjuvant in post-surgery wound healing, with obvious benefits in terms of functionality and aesthetic recovery of affected tissues/organs. These indications were well documented, and a large amount of evidence has already been published supporting the efficacy of this method. The primordial principle behind minimally invasive PRP treatments is the usage of the patient's own platelets. The benefits of the autologous transplantation of thrombocytes are significant, representing a fast and economic method that requires only basic equipment and training, and it is biocompatible, thus being a low risk for the patient (infection and immunological reactions can be virtually disregarded). Usually, the structural benefits of applying PRP are attributed to fibroblasts only, as they are considered the most numerous cell population within the interstitium. However, this apparent simplistic explanation is still eluding those different types of interstitial cells (distinct from fibroblasts) that are residing within stromal tissue, e.g., telocytes (TCs). Moreover, dermal TCs have an already documented potential in angiogenesis (extra-cutaneous, but also within skin), and their implication in skin recovery in a few dermatological conditions was attested and described ultrastructurally and immunophenotypically. Interestingly, PRP biochemically consists of a series of growth factors, cytokines, and other molecules, to which TCs have also proven to have a positive expression. Thus, it is attractive to hypothesize and to document any tissular collaboration between cutaneous administered PRP and local dermal TCs in skin recovery/repair/regeneration. Therefore, TCs could be perceived as the missing link necessary to provide a solid explanation of the good results achieved by administering PRP in skin-repairing processes.
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Affiliation(s)
- Catalin G Manole
- Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Ultrastructural Pathology Laboratory, "Victor Babeș" National Institute of Pathology, 050096 Bucharest, Romania
| | - Vlad M Voiculescu
- Department of Oncological Dermatology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Cristina Soare
- Department of Oncological Dermatology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Laura Cristina Ceafalan
- Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Cell Biology, Neurosciences and Experimental Myology Laboratory, "Victor Babeș" National Institute of Pathology, 050096 Bucharest, Romania
| | - Mihaela Gherghiceanu
- Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Ultrastructural Pathology Laboratory, "Victor Babeș" National Institute of Pathology, 050096 Bucharest, Romania
| | - Mihail E Hinescu
- Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
- "Victor Babeș" National Institute of Pathology, 050096 Bucharest, Romania
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2
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Huang L, Ho C, Ye X, Gao Y, Guo W, Chen J, Sun J, Wen D, Liu Y, Liu Y, Zhang Y, Li Q. Mechanisms and translational applications of regeneration in limbs: From renewable animals to humans. Ann Anat 2024; 255:152288. [PMID: 38823491 DOI: 10.1016/j.aanat.2024.152288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 04/08/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND The regenerative capacity of organisms declines throughout evolution, and mammals lack the ability to regenerate limbs after injury. Past approaches to achieving successful restoration through pharmacological intervention, tissue engineering, and cell therapies have faced significant challenges. OBJECTIVES This review aims to provide an overview of the current understanding of the mechanisms behind animal limb regeneration and the successful translation of these mechanisms for human tissue regeneration. RESULTS Particular attention was paid to the Mexican axolotl (Ambystoma mexicanum), the only adult tetrapod capable of limb regeneration. We will explore fundamental questions surrounding limb regeneration, such as how amputation initiates regeneration, how the limb knows when to stop and which parts to regenerate, and how these findings can apply to mammalian systems. CONCLUSIONS Given the urgent need for regenerative therapies to treat conditions like diabetic foot ulcers and trauma survivors, this review provides valuable insights and ideas for researchers, clinicians, and biomedical engineers seeking to facilitate the regeneration process or elicit full regeneration from partial regeneration events.
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Affiliation(s)
- Lu Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China; Department of Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA.
| | - Chiakang Ho
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Xinran Ye
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Ya Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Weiming Guo
- Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China; National Clinical Research Center for Oral Diseases, Shanghai 200011, China; National Center for Stomatology, Shanghai 200011, China; College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China; Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Julie Chen
- Department of Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - Jiaming Sun
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Dongsheng Wen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Yangdan Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Yuxin Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Yifan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
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3
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Hamada M, Takaya K, Wang Q, Otaki M, Imbe Y, Nakajima Y, Sakai S, Okabe K, Aramaki-Hattori N, Kishi K. Regeneration of Panniculus Carnosus Muscle in Fetal Mice Is Characterized by the Presence of Actin Cables. Biomedicines 2023; 11:3350. [PMID: 38137571 PMCID: PMC10742160 DOI: 10.3390/biomedicines11123350] [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: 10/12/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Mammalian skin, including human and mouse skin, does not regenerate completely after injury; it is repaired, leaving a scar. However, it is known that skin wounds up to a certain stage of embryonic development can regenerate. The mechanism behind the transition from regeneration to scar formation is not fully understood. Panniculus carnosus muscle (PCM) is present beneath the dermal fat layer and is a very important tissue for wound contraction. In rodents, PCM is present throughout the body. In humans, on the other hand, it disappears and becomes a shallow fascia on the trunk. Fetal cutaneous wounds, including PCM made until embryonic day 13 (E13), regenerate completely, but not beyond E14. We visualized the previously uncharacterized development of PCM in the fetus and investigated the temporal and spatial changes in PCM at different developmental stages, ranging from full regeneration to non-regeneration. Furthermore, we report that E13 epidermal closure occurs through actin cables, which are bundles of actomyosin formed at wound margins. The wound healing process of PCM suggests that actin cables may also be associated with PCM. Our findings reveal that PCM regenerates through a similar mechanism.
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Affiliation(s)
- Mariko Hamada
- Department of Plastic and Reconstructive Surgery, Tachikawa Hospital, 4-2-22 Nishiki-cho, Tachikawa-shi, Tokyo 190-8531, Japan;
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Kento Takaya
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Qi Wang
- Faculty of Pharmacy, Keio University, 1-5-30 Shiba Koen, Minato-ku, Tokyo 105-8512, Japan; (Q.W.); (Y.I.)
| | - Marika Otaki
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Yuka Imbe
- Faculty of Pharmacy, Keio University, 1-5-30 Shiba Koen, Minato-ku, Tokyo 105-8512, Japan; (Q.W.); (Y.I.)
| | - Yukari Nakajima
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Shigeki Sakai
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Keisuke Okabe
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Noriko Aramaki-Hattori
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Kazuo Kishi
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
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4
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Yin S, Wang Y, Yang X. Amphibian-derived wound healing peptides: chemical molecular treasure trove for skin wound treatment. Front Pharmacol 2023; 14:1120228. [PMID: 37377928 PMCID: PMC10291078 DOI: 10.3389/fphar.2023.1120228] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
Amphibian-derived wound healing peptides thus offer new intervention measures and strategies for skin wound tissue regeneration. As novel drug lead molecules, wound healing peptides can help analyze new mechanisms and discover new drug targets. Previous studies have identified various novel wound healing peptides and analyzed novel mechanisms in wound healing, especially competing endogenous RNAs (ceRNAs) (e.g., inhibition of miR-663a promotes skin repair). In this paper, we review amphibian-derived wound healing peptides, including the acquisition, identification, and activity of peptides, a combination of peptides with other materials, and the analysis of underlying mechanisms, to better understand the characteristics of wound healing peptides and to provide a molecular template for the development of new wound repair drugs.
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Affiliation(s)
- Saige Yin
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Ying Wang
- Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission and Ministry of Education, School of Ethno-Medicine and Ethno-Pharmacy, Yunnan Minzu University, Kunming, China
| | - Xinwang Yang
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
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5
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Kosykh AV, Tereshina MB, Gurskaya NG. Potential Role of AGR2 for Mammalian Skin Wound Healing. Int J Mol Sci 2023; 24:ijms24097895. [PMID: 37175601 PMCID: PMC10178616 DOI: 10.3390/ijms24097895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
The limited ability of mammals to regenerate has garnered significant attention, particularly in regard to skin wound healing (WH), which is a critical step for regeneration. In human adults, skin WH results in the formation of scars following injury or trauma, regardless of severity. This differs significantly from the scarless WH observed in the fetal skin of mammals or anamniotes. This review investigates the role of molecular players involved in scarless WH, which are lost or repressed in adult mammalian WH systems. Specifically, we analyze the physiological role of Anterior Gradient (AGR) family proteins at different stages of the WH regulatory network. AGR is activated in the regeneration of lower vertebrates at the stage of wound closure and, accordingly, is important for WH. Mammalian AGR2 is expressed during scarless WH in embryonic skin, while in adults, the activity of this gene is normally inhibited and is observed only in the mucous epithelium of the digestive tract, which is capable of full regeneration. The combination of AGR2 unique potencies in postnatal mammals makes it possible to consider it as a promising candidate for enhancing WH processes.
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Affiliation(s)
- Anastasiya V Kosykh
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Maria B Tereshina
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
| | - Nadya G Gurskaya
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia
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6
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Kashimoto R, Kamei Y, Nonaka S, Kondo Y, Yamamoto S, Furukawa S, Ohashi A, Satoh A. FGF signaling induces the regeneration of collagen fiber structure during skin wound healing in axolotls. Dev Biol 2023; 498:14-25. [PMID: 36963624 DOI: 10.1016/j.ydbio.2023.03.007] [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: 01/18/2023] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/26/2023]
Abstract
Axolotls have been considered to be able to regenerate their skin completely. Our recent study updated this theory with the finding that the lattice structure of dermal collagen fibers was not fully regenerated after skin injury. We also discovered that nerves induce the regeneration of collagen fibers. The mechanism of collagen fiber regeneration remains unknown, however. In this study, we focused on the structure of collagen fibers with collagen braiding cells, and cell origin in axolotl skin regeneration. In the wounded dermis, cells involved in skin repair/regeneration were derived from both the surrounding dermis and the subcutaneous tissue. Regardless of cell origin, cells acquired the proper cell morphology to braid collagen fiber with nerve presence. We also found that FGF signaling could substitute for the nerve roles in the conversion of subcutaneous fibroblasts to lattice-shaped dermal fibroblasts. Our findings contribute to the elucidation of the fundamental mechanisms of true skin regeneration and provide useful insights for pioneering new skin treatments.
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Affiliation(s)
- Rena Kashimoto
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Yasuhiro Kamei
- National Institute for Basic Biology (NIBB), National Institutes of Natural Sciences, Okazaki, 444-8585, Japan
| | - Shigenori Nonaka
- National Institute for Basic Biology (NIBB), National Institutes of Natural Sciences, Okazaki, 444-8585, Japan; Exploratory Research Center for Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8585, Japan
| | - Yohei Kondo
- National Institute for Basic Biology (NIBB), National Institutes of Natural Sciences, Okazaki, 444-8585, Japan; Exploratory Research Center for Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8585, Japan
| | - Sakiya Yamamoto
- Division of Biological Science, Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Saya Furukawa
- Division of Biological Science, Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Ayaka Ohashi
- Division of Biological Science, Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Akira Satoh
- Research Core for Interdisciplinary Sciences (RCIS), Okayama University, Okayama, 700-8530, Japan.
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7
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Reeve RE, Quale K, Curtis GH, Crespi EJ. Evolutionary conservation of leptin effects on wound healing in vertebrates: Implications for veterinary medicine. Front Endocrinol (Lausanne) 2022; 13:938296. [PMID: 36093099 PMCID: PMC9453652 DOI: 10.3389/fendo.2022.938296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
In mammals, the cytokine hormone leptin promotes wound healing by increasing inflammation, cellular recruitment, angiogenic regrowth, and re-epithelialization; however, it is not known whether leptin has conserved actions on wound healing in other vertebrates. Here, we tested the hypothesis that leptin promotes both the quality and speed of wound healing in the South African clawed frog, Xenopus laevis. First, fluorescent immunohistochemistry using a polyclonal antibody specific to Xenopus leptin showed that in juvenile dorsal skin, leptin protein is expressed in the dorsal epidermal layer, as well in blood vessel endothelial cells and sensory nerves that run along the base of the dermis. Injection of recombinant Xenopus leptin (rXleptin) stimulates phosphorylated STAT3 (pSTAT3), indicative of leptin-activated JAK/STAT signaling in the epidermis. Similar to mammals, leptin protein expression increases at the wound site after injury of the epidermis. We then cultured "punch-in-a-punch" full-thickness dorsal skin explants in three doses of rXleptin (0, 10, and 100 ng/ml) and showed that leptin treatment doubled the rate of wound closure after 48 h relative to skin punches cultured without leptin. Food restriction prior to wound explant culture reduced the amount of wound closure, but leptin injection prior to euthanasia rescued closure to similar control levels. Leptin treatment also significantly reduced bacterial infection of these epidermal punches by 48 h in culture. This study shows that leptin is likely an endogenous promoter of wound healing in amphibians. Leptin-based therapies have the potential to expedite healing and reduce the incidence of secondary infections without toxicity issues, the threat of antibiotic resistance, or environmental antibiotic contamination. The conservation of leptin's actions on wound healing also suggests that it may have similar veterinary applications for other exotic species.
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Affiliation(s)
| | | | | | - Erica J. Crespi
- School of Biological Sciences and Center for Reproductive Biology, Washington State University, Pullman, WA, United States
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8
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Kashimoto R, Furukawa S, Yamamoto S, Kamei Y, Sakamoto J, Nonaka S, Watanabe TM, Sakamoto T, Sakamoto H, Satoh A. Lattice-patterned collagen fibers and their dynamics in axolotl skin regeneration. iScience 2022; 25:104524. [PMID: 35754731 PMCID: PMC9213773 DOI: 10.1016/j.isci.2022.104524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/02/2022] [Accepted: 05/30/2022] [Indexed: 11/25/2022] Open
Abstract
The morphology of collagen-producing cells and the structure of produced collagen in the dermis have not been well-described. This lack of insights has been a serious obstacle in the evaluation of skin regeneration. We succeeded in visualizing collagen-producing cells and produced collagen using the axolotl skin, which is highly transparent. The visualized dermal collagen had a lattice-like structure. The collagen-producing fibroblasts consistently possessed the lattice-patterned filopodia along with the lattice-patterned collagen network. The dynamics of this lattice-like structure were also verified in the skin regeneration process of axolotls, and it was found that the correct lattice-like structure was not reorganized after simple skin wounding but was reorganized in the presence of nerves. These findings are not only fundamental insights in dermatology but also valuable insights into the mechanism of skin regeneration. Dermal collagen synthesized by a single cell was visualized in the axolotl skin Collagen-synthetic cells were visualized and revealed lattice-patterned filopodia Collagen pattern was deformed after simple skin wounding The lattice-patterned collagen was only restorable in the presence of nerves
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Affiliation(s)
- Rena Kashimoto
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Saya Furukawa
- Department of Biological Sciences, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Sakiya Yamamoto
- Department of Biological Sciences, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Yasuhiro Kamei
- National Institute for Basic Biology (NIBB), National Institutes for Natural Sciences, Okazaki 444-8585, Japan
| | - Joe Sakamoto
- National Institute for Basic Biology (NIBB), National Institutes for Natural Sciences, Okazaki 444-8585, Japan
| | - Shigenori Nonaka
- National Institute for Basic Biology (NIBB), National Institutes for Natural Sciences, Okazaki 444-8585, Japan
- Exploratory Research Center for Life and Living Systems (ExCELLS), National Institutes for Natural Sciences, Okazaki 444-8585, Japan
| | - Tomonobu M. Watanabe
- Laboratory for Comprehensive Bioimaging, RIKEN Center for Biosystems Dynamics Research (BDR), Kobe 650-0047, Japan
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
| | - Tatsuya Sakamoto
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
- Ushimado Marine Institute (UMI), Okayama University, Setouchi 701-4303, Japan
| | - Hirotaka Sakamoto
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
- Ushimado Marine Institute (UMI), Okayama University, Setouchi 701-4303, Japan
| | - Akira Satoh
- Research Core for Interdisciplinary Sciences (RCIS), Okayama University, Okayama 700-8530, Japan
- Corresponding author
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Safina I, Childress LT, Myneni SR, Vang KB, Biris AS. Cell-Biomaterial Constructs for Wound Healing and Skin Regeneration. Drug Metab Rev 2022; 54:63-94. [PMID: 35129408 DOI: 10.1080/03602532.2021.2025387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Over the years, conventional skin grafts, such as full-thickness, split-thickness, and pre-sterilized grafts from human or animal sources, have been at the forefront of skin wound care. However, these conventional grafts are associated with major challenges, including supply shortage, rejection by the immune system, and disease transmission following transplantation. Due to recent progress in nanotechnology and material sciences, advanced artificial skin grafts-based on the fundamental concepts of tissue engineering-are quickly evolving for wound healing and regeneration applications, mainly because they can be uniquely tailored to meet the requirements of specific injuries. Despite tremendous progress in tissue engineering, many challenges and uncertainties still face skin grafts in vivo, such as how to effectively coordinate the interaction between engineered biomaterials and the immune system to prevent graft rejection. Furthermore, in-depth studies on skin regeneration at the molecular level are lacking; as a consequence, the development of novel biomaterial-based systems that interact with the skin at the core level has also been slow. This review will discuss 1) the biological aspects of wound healing and skin regeneration, 2) important characteristics and functions of biomaterials for skin regeneration applications, and 3) synthesis and applications of common biomaterials for skin regeneration. Finally, the current challenges and future directions of biomaterial-based skin regeneration will be addressed.
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Affiliation(s)
- Ingrid Safina
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204 USA
| | - Luke T Childress
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204 USA
| | - Srinivas R Myneni
- Department of Periodontology, Stony Brook University, Stony Brook, NY 11794 USA
| | - Kieng Bao Vang
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204 USA
| | - Alexandru S Biris
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204 USA
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10
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A Beginner's Introduction to Skin Stem Cells and Wound Healing. Int J Mol Sci 2021; 22:ijms222011030. [PMID: 34681688 PMCID: PMC8538579 DOI: 10.3390/ijms222011030] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/06/2021] [Accepted: 10/11/2021] [Indexed: 02/06/2023] Open
Abstract
The primary function of the skin is that of a physical barrier against the environment and diverse pathogens; therefore, its integrity is essential for survival. Skin regeneration depends on multiple stem cell compartments within the epidermis, which, despite their different transcriptional and proliferative capacity, as well as different anatomical location, fall under the general term of skin stem cells (SSCs). Skin wounds can normally heal without problem; however, some diseases or extensive damage may delay or prevent healing. Non-healing wounds represent a serious and life-threatening scenario that may require advanced therapeutic strategies. In this regard, increased focus has been directed at SSCs and their role in wound healing, although emerging therapeutical approaches are considering the use of other stem cells instead, such as mesenchymal stem cells (MSCs). Given its extensive and broad nature, this review supplies newcomers with an introduction to SSCs, wound healing, and therapeutic strategies for skin regeneration, thus familiarizing the reader with the subject in preparation for future in depth reading.
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11
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de Bakker DEM, Bouwman M, Dronkers E, Simões FC, Riley PR, Goumans MJ, Smits AM, Bakkers J. Prrx1b restricts fibrosis and promotes Nrg1-dependent cardiomyocyte proliferation during zebrafish heart regeneration. Development 2021; 148:272033. [PMID: 34486669 PMCID: PMC8513610 DOI: 10.1242/dev.198937] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 08/04/2021] [Indexed: 01/21/2023]
Abstract
Fibroblasts are activated to repair the heart following injury. Fibroblast activation in the mammalian heart leads to a permanent fibrotic scar that impairs cardiac function. In other organisms, such as zebrafish, cardiac injury is followed by transient fibrosis and scar-free regeneration. The mechanisms that drive scarring versus scar-free regeneration are not well understood. Here, we show that the homeobox-containing transcription factor Prrx1b is required for scar-free regeneration of the zebrafish heart as the loss of Prrx1b results in excessive fibrosis and impaired cardiomyocyte proliferation. Through lineage tracing and single-cell RNA sequencing, we find that Prrx1b is activated in epicardial-derived cells where it restricts TGFβ ligand expression and collagen production. Furthermore, through combined in vitro experiments in human fetal epicardial-derived cells and in vivo rescue experiments in zebrafish, we conclude that Prrx1 stimulates Nrg1 expression and promotes cardiomyocyte proliferation. Collectively, these results indicate that Prrx1 is a key transcription factor that balances fibrosis and regeneration in the injured zebrafish heart. This article has an associated 'The people behind the papers' interview.
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Affiliation(s)
- Dennis E M de Bakker
- Hubrecht Institute-KNAW and University Medical Center Utrecht, 3584CT Utrecht, The Netherlands
| | - Mara Bouwman
- Hubrecht Institute-KNAW and University Medical Center Utrecht, 3584CT Utrecht, The Netherlands
| | - Esther Dronkers
- Department of Cell and Chemical Biology, Leiden University Medical Centre, 2333ZC Leiden, The Netherlands
| | - Filipa C Simões
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK
| | - Marie-José Goumans
- Department of Cell and Chemical Biology, Leiden University Medical Centre, 2333ZC Leiden, The Netherlands
| | - Anke M Smits
- Department of Cell and Chemical Biology, Leiden University Medical Centre, 2333ZC Leiden, The Netherlands
| | - Jeroen Bakkers
- Hubrecht Institute-KNAW and University Medical Center Utrecht, 3584CT Utrecht, The Netherlands.,Department of Pediatric Cardiology, University Medical Centre Utrecht, 3584CX Utrecht, The Netherlands
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12
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Otsuka T, Kan HM, Laurencin CT. Regenerative Engineering Approaches to Scar-Free Skin Regeneration. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2021. [DOI: 10.1007/s40883-021-00229-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Abstract
Species that can regrow their lost appendages have been studied with the ultimate aim of developing methods to enable human limb regeneration. These examinations highlight that appendage regeneration progresses through shared tissue stages and gene activities, leading to the assumption that appendage regeneration paradigms (e.g. tails and limbs) are the same or similar. However, recent research suggests these paradigms operate differently at the cellular level, despite sharing tissue descriptions and gene expressions. Here, collecting the findings from disparate studies, I argue appendage regeneration is context dependent at the cellular level; nonetheless, it requires (i) signalling centres, (ii) stem/progenitor cell types and (iii) a regeneration-permissive environment, and these three common cellular principles could be more suitable for cross-species/paradigm/age comparisons.
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Affiliation(s)
- Can Aztekin
- School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland
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14
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Arenas Gómez CM, Sabin KZ, Echeverri K. Wound healing across the animal kingdom: Crosstalk between the immune system and the extracellular matrix. Dev Dyn 2020; 249:834-846. [PMID: 32314465 PMCID: PMC7383677 DOI: 10.1002/dvdy.178] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/10/2020] [Accepted: 04/11/2020] [Indexed: 12/11/2022] Open
Abstract
Tissue regeneration is widespread in the animal kingdom. To date, key roles for different molecular and cellular programs in regeneration have been described, but the ultimate blueprint for this talent remains elusive. In animals capable of tissue regeneration, one of the most crucial stages is wound healing, whose main goal is to close the wound and prevent infection. In this stage, it is necessary to avoid scar formation to facilitate the activation of the immune system and remodeling of the extracellular matrix, key factors in promoting tissue regeneration. In this review, we will discuss the current state of knowledge regarding the role of the immune system and the interplay with the extracellular matrix to trigger a regenerative response.
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Affiliation(s)
- Claudia M. Arenas Gómez
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological LaboratoryWoods HoleMassachusettsUSA
| | - Keith Z. Sabin
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological LaboratoryWoods HoleMassachusettsUSA
| | - Karen Echeverri
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological LaboratoryWoods HoleMassachusettsUSA
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15
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Shi Y, Li C, Wang M, Chen Z, Luo Y, Xia XS, Song Y, Sun Y, Zhang AM. Cathelicidin-DM is an Antimicrobial Peptide from Duttaphrynus melanostictus and Has Wound-Healing Therapeutic Potential. ACS OMEGA 2020; 5:9301-9310. [PMID: 32363280 PMCID: PMC7191562 DOI: 10.1021/acsomega.0c00189] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/02/2020] [Indexed: 05/04/2023]
Abstract
Antimicrobial peptides (AMPs) are a class of templates with application potential for drug development. Amphibians are important sources of AMPs. Duttaphrynus melanostictus is the main source of traditional Chinese medicine "Chansu", which has anti-infection effect while without a clear mechanism. This study aimed to find the cathelicidin peptide in D. melanostictus and then investigate the activity in vivo and in vitro, and an AMP-encoding gene (cathelicidin-DM, GenBank: KJ820824.1) was obtained from the constructed cDNA library of D. melanostictus. The MIC test and SYTOX Green uptake were used for the evaluation of the bactericidal capacity and mechanisms. The serum stability tests were used for the evaluation of the application potential. The skin wound infection model and in vivo imaging were used for in vitro application of possibility evaluation. The results showed that cathelicidin-DM was a 37 amino acid AMP with good bactericidal ability, which was similar to melittin: both can kill bacteria within 15 min. Moreover, cathelicidin-DM exhibits good therapeutic potential in the mouse wound infection model, and it can be enriched to the site of infection for treatment. Thus, cathelicidin-DM could be a new template for antimicrobial drug development given its good antibacterial activity in vivo and in vitro.
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Affiliation(s)
- Yaoqiang Shi
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Chao Li
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Mei Wang
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Zijun Chen
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Ying Luo
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Xue-shan Xia
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
| | - Yuzhu Song
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
- . Phone/Fax: 86-871-65939528
| | - Yi Sun
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
- Clinical
Laboratory, First People’s Hospital
of Yunnan, Kunming, Yunnan 650032, China
- .
Phone/Fax: 86-871-65939528
| | - A-Mei Zhang
- Faculty
of Life Science and Technology, Kunming
University of Science and Technology, Kunming, Yunnan 650500, China
- Molecular
Medicine Center of Yunnan Province, Kunming, Yunnan 650032, China
- . Phone/Fax: 86-871-65939528
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16
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Abstract
Understanding how to promote organ and appendage regeneration is a key goal of regenerative medicine. The frog, Xenopus, can achieve both scar-free healing and tissue regeneration during its larval stages, although it predominantly loses these abilities during metamorphosis and adulthood. This transient regenerative capacity, alongside their close evolutionary relationship with humans, makes Xenopus an attractive model to uncover the mechanisms underlying functional regeneration. Here, we present an overview of Xenopus as a key model organism for regeneration research and highlight how studies of Xenopus have led to new insights into the mechanisms governing regeneration.
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Affiliation(s)
- Lauren S Phipps
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK
| | - Lindsey Marshall
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK
| | - Karel Dorey
- Division of Developmental Biology and Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK
| | - Enrique Amaya
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK
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17
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Liu N, Li Z, Meng B, Bian W, Li X, Wang S, Cao X, Song Y, Yang M, Wang Y, Tang J, Yang X. Accelerated Wound Healing Induced by a Novel Amphibian Peptide (OA-FF10). Protein Pept Lett 2019; 26:261-270. [PMID: 30678611 DOI: 10.2174/0929866526666190124144027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 12/04/2018] [Accepted: 01/15/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Despite the continued development of modern medicine, chronic wounds are still a critical issue in clinical treatment, placing a great physiological, psychological, and financial burden on patients. Researchers have investigated many methods to solve this problem, with bioactive peptides gaining increasing attention due to their considerable advantages and diverse functions, as well as low cost, simple storage, and easy transportation. METHODS In this research, a novel peptide (named OA-FF10) was identified from the skin secretions of the odorous frog species Odorrana andersonii. The sequence of mature OA-FF10 was "FFTTSCRSGC", which was produced by the post-translational processing of a 61-residue prepropeptide. RESULTS Similar to most frog peptides, OA-FF10 showed an intramolecular disulfide bridge at the C-terminus. OA-FF10 demonstrated no antibacterial, antioxidant, hemolytic, or acute toxic activity, but promoted wound healing and proliferation of human keratinocytes (HaCaT) both time- and dose-dependently. Furthermore, while OA-FF10 had no effect on wound healing of Human Skin Fibroblasts (HSF), it did accelerate healing in a full-thickness skin-wound mouse model. CONCLUSION Our research revealed the strong wound-healing activity of OA-FF10 in vivo and in vitro, thus providing a new candidate for the development of novel wound-healing drugs.
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Affiliation(s)
- Naixin Liu
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Zhe Li
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Buliang Meng
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Wenxin Bian
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Xiaojie Li
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Siyuan Wang
- Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission & Ministry of Education, School of Ethnomedicine and Ethnopharmacy, Yunnan Minzu University, Kunming, Yunnan 650500, China
| | - Xiaoqing Cao
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Yongli Song
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Meifeng Yang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Ying Wang
- Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission & Ministry of Education, School of Ethnomedicine and Ethnopharmacy, Yunnan Minzu University, Kunming, Yunnan 650500, China
| | - Jing Tang
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Xinwang Yang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan 650500, China
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18
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Insights regarding skin regeneration in non-amniote vertebrates: Skin regeneration without scar formation and potential step-up to a higher level of regeneration. Semin Cell Dev Biol 2019; 100:109-121. [PMID: 31831357 DOI: 10.1016/j.semcdb.2019.11.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/16/2019] [Accepted: 11/22/2019] [Indexed: 12/17/2022]
Abstract
Skin wounds are among the most common injuries in animals and humans. Vertebrate skin is composed of an epidermis and dermis. After a deep skin injury in mammals, the wound heals, but the dermis cannot regenerate. Instead, collagenous scar tissue forms to fill the gap in the dermis, but the scar does not function like the dermis and often causes disfiguration. In contrast, in non-amniote vertebrates, including fish and amphibians, the dermis and skin derivatives are regenerated after a deep skin injury, without a recognizable scar remaining. Furthermore, skin regeneration can be compared with a higher level of organ regeneration represented by limb regeneration in these non-amniotes, as fish, anuran amphibians (frogs and toads), and urodele amphibians (newts and salamanders) have a high capacity for organ regeneration. Comparative studies of skin regeneration together with limb or other organ regeneration could reveal how skin regeneration is stepped up to a higher level of regeneration. The long history of regenerative biology research has revealed that fish, anurans, and urodeles have their own strengths as models for regeneration studies, and excellent model organisms of these non-amniote vertebrates that are suitable for molecular genetic studies are now available. Here, we summarize the advantages of fish, anurans, and urodeles for skin regeneration studies with special reference to three model organisms: zebrafish (Danio rerio), African clawed frog (Xenopus laevis), and Iberian ribbed newt (Pleurodele waltl). All three of these animals quickly cover skin wounds with the epidermis (wound epidermis formation) and regenerate the dermis and skin derivatives as adults. The availability of whole genome sequences, transgenesis, and genome editing with these models enables cell lineage tracing and the use of human disease models in skin regeneration phenomena, for example. Zebrafish present particular advantages in genetics research (e.g., human disease model and Cre-loxP system). Amphibians (X. laevis and P. waltl) have a skin structure (keratinized epidermis) common with humans, and skin regeneration in these animals can be stepped up to limb regeneration, a higher level of regeneration.
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19
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Seifert AW, Cook AB, Shaw D. Inhibiting fibroblast aggregation in skin wounds unlocks developmental pathway to regeneration. Dev Biol 2019; 455:60-72. [DOI: 10.1016/j.ydbio.2019.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 07/03/2019] [Indexed: 12/13/2022]
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20
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Currie JD, Grosser L, Murawala P, Schuez M, Michel M, Tanaka EM, Sandoval-Guzmán T. The Prrx1 limb enhancer marks an adult subpopulation of injury-responsive dermal fibroblasts. Biol Open 2019; 8:bio.043711. [PMID: 31278164 PMCID: PMC6679413 DOI: 10.1242/bio.043711] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The heterogeneous properties of dermal cell populations have been posited to contribute toward fibrotic, imperfect wound healing in mammals. Here we characterize an adult population of dermal fibroblasts that maintain an active Prrx1 enhancer which originally marked mesenchymal limb progenitors. In contrast to their abundance in limb development, postnatal Prrx1 enhancer-positive cells (Prrx1enh+) make up a small subset of adult dermal cells (∼0.2%) and reside mainly within dermal perivascular and hair follicle niches. Lineage tracing of adult Prrx1enh+ cells shows that they remain in their niches and in small numbers over a long period of time. Upon injury however, Prrx1enh+ cells readily migrate into the wound bed and amplify, on average, 16-fold beyond their uninjured numbers. Additionally, following wounding dermal Prrx1enh+ cells are found out of their dermal niches and contribute to subcutaneous tissue. Postnatal Prrx1enh+ cells are uniquely injury-responsive despite being a meager minority in the adult skin. Summary: Dermal Prrx1-enhancer cells are injury-responsive fibroblasts. Prrx1enh+ cells readily migrate into the wound bed and amplify on average 16-fold beyond their uninjured numbers.
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Affiliation(s)
- Joshua D Currie
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany .,Department of Cell and Systems Biology, University of Toronto, 25 Harbord Street, M5S 3G5 Toronto, Canada
| | - Lidia Grosser
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.,Research Institute for Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030 Vienna, Austria
| | - Prayag Murawala
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.,Research Institute for Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030 Vienna, Austria
| | - Maritta Schuez
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany
| | - Martin Michel
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany
| | - Elly M Tanaka
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.,Research Institute for Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030 Vienna, Austria
| | - Tatiana Sandoval-Guzmán
- CRTD-Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany
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21
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Chromatin dynamics underlying the precise regeneration of a vertebrate limb - Epigenetic regulation and cellular memory. Semin Cell Dev Biol 2019; 97:16-25. [PMID: 30991117 DOI: 10.1016/j.semcdb.2019.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/01/2019] [Accepted: 04/09/2019] [Indexed: 12/13/2022]
Abstract
Wound healing, tissue regeneration, and organ regrowth are all regeneration phenomena observed in vertebrates after an injury. However, the ability to regenerate differs greatly among species. Mammals can undergo wound healing and tissue regeneration, but cannot regenerate an organ; for example, they cannot regrow an amputated limb. In contrast, amphibians and fish have much higher capabilities for organ-level regeneration. In addition to medical studies and those in conventional mammalian models such as mice, studies in amphibians and fish have revealed essential factors for and mechanisms of regeneration, including the regrowth of a limb, tail, or fin. However, the molecular nature of the cellular memory needed to precisely generate a new appendage from an amputation site is not fully understood. Recent reports have indicated that organ regeneration is closely related to epigenetic regulation. For example, the methylation status of genomic DNA is related to the expression of regeneration-related genes, and histone-modification enzymes are required to control the chromatin dynamics for regeneration. A proposed mechanism of cellular memory involving an inheritable system of epigenetic modification led us to hypothesize that epigenetic regulation forms the basis for cellular memory in organ regeneration. Here we summarize the current understanding of the role of epigenetic regulation in organ regeneration and discuss the relationship between organ regeneration and epigenetic memory.
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22
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Abstract
The fovea centralis, an anatomically concave pit located at the center of the macula, is avascular, hypoxic, and characteristic of stem-cell niches of other tissues. We hypothesized that in the fovea, undifferentiated retinal-stem-cell-like cells may exist, and that neurogenesis may occur. Hence, we performed an immunohistological study using cynomolgus monkey retinas. After preparing frozen tissue sections of the retina including the foveal pit, immunostaining was performed for glial fibrillary acidic protein (GFAP), nestin, vimentin, neuron-specific class III β-tubulin (Tuj-1), arrestin 4, neurofilament, CD117, CD44, Ki67, and cellular retinaldehyde-binding protein (CRALBP), followed by fluorescence and/or confocal microscopy examinations. Immunostaining of the tissue sections enabled clear observation of strongly GFAP-positive cells that corresponded to the inner-half layer of the foveolar Müller cell cone. The surface layer of the foveal slope was partially costained with GFAP and vimentin. Tuj-1-positive cells were observed in the innermost layer of the foveolar retina, which spanned to the surrounding ganglion cell layer. Moreover, colocalization of Tuj-1 and GFAP was observed at the foveal pit. The coexpression of CD117 and CD44 was found in the interphotoreceptor matrix of the fovea. The foveolar cone stained positive for both nestin and arrestin 4, however, the photoreceptor layer outside of the foveola displayed weak staining for nestin. Colocalization of nestin and vimentin was observed in the inner half of the Henle layer, while colocalization of nestin and neurofilament was observed in the outer half, predominantly. Scattered Ki67-positive cells were observed in the cellular processes of the outer plexiform layer and the ganglion cell layer around the foveola. Immunostaining for CRALBP was negative in most parts of the GFAP-positive area. The Müller cell cone was divided into GFAP-strongly positive cells, presumably astrocytes, in the inner layer and nestin-positive/GFAP-weakly positive radial glia-like cells in the outer layer. These findings indicated that groups of such undifferentiated cells in the foveola might be involved in maintaining morphology and regeneration.
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23
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Kawabe K, Takarada T. [Molecular understanding of hierarchy and lineage of mesenchymal stem cells in vivo]. Nihon Yakurigaku Zasshi 2019; 153:67-72. [PMID: 30745516 DOI: 10.1254/fpj.153.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Mesenchymal stem cell (MSC) is a type of tissue stem cell. In clinical studies, cultured MSCs have shown important therapeutic effects on diseases via the reduction of neurological defects and regulation of immune responses. However, in vivo MSC localization, function, and properties are poorly understood; therefore, the molecular understanding of MSCs hierarchy is less advanced compared to hematopoietic stem cell hierarchy. To address these issues, we developed a method that enables us to visualize MSCs, manipulate their function, and analyze their molecular biology in vivo. Paired-related homeobox 1 (Prrx1)-positive cells are transiently observed during limb skeletal development in mice. Prrx1-positive cells form heterogeneous populations comprising multiple mesenchymal progenitors with different lineages that are developing into osteoblasts, chondrocytes, adipocytes, fibroblasts, and tendon and ligament cells. Our results suggest that osteoblast differentiation in the calvaria begins at the Prrx1+Sca1+ MSC stage with sequential progression to Prrx1+Sca1- cells, then Osterix+Prrx1-Sca1- osteoblast precursors, which eventually form mature α1(I)-collagen+ osteoblasts. Using Runt-related transcription factor 2 (Runx2) conditional knockout mice, furthermore, we found that the essential period of Runx2 function in intramembranous ossification likely begins at the Prrx1+Sca1+ MSC stage and ends at the Osterix+Prrx1-Sca1- osteoblast precursor stage (before mature the α1(I)-collagen+ osteoblasts appear). This approach will enable us to understand the in vivo molecular biology features of MSCs, leading to their therapeutic applications for tissue repair and regeneration. This development can also contribute to the field of pluripotent stem cell by enabling the transplantation of lineage-restricted mesenchymal progenitors.
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Affiliation(s)
- Kenji Kawabe
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
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24
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Bayramov AV, Ermakova GV, Kucheryavyy AV, Zaraisky AG. Lampreys, “Living Fossils,” in Research on Early Development and Regeneration in Vertebrates. Russ J Dev Biol 2019. [DOI: 10.1134/s1062360418080015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Peptides for Skin Protection and Healing in Amphibians. Molecules 2019; 24:molecules24020347. [PMID: 30669405 PMCID: PMC6359409 DOI: 10.3390/molecules24020347] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 01/04/2023] Open
Abstract
Amphibian skin is not to be considered a mere tegument; it has a multitude of functions related to respiration, osmoregulation, and thermoregulation, thus allowing the individuals to survive and thrive in the terrestrial environment. Moreover, amphibian skin secretions are enriched with several peptides, which defend the skin from environmental and pathogenic insults and exert many other biological effects. In this work, the beneficial effects of amphibian skin peptides are reviewed, in particular their role in speeding up wound healing and in protection from oxidative stress and UV irradiation. A better understanding of why some species seem to resist several environmental insults can help to limit the ongoing amphibian decline through the development of appropriate strategies, particularly against pathologies such as viral and fungal infections.
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26
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Franchini A. Adaptive Immunity and Skin Wound Healing in Amphibian Adults. Open Life Sci 2019; 14:420-426. [PMID: 33817177 PMCID: PMC7874748 DOI: 10.1515/biol-2019-0047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 05/26/2019] [Indexed: 01/18/2023] Open
Abstract
Regeneration and repair with scarring of the skin are two different responses to tissue injury that proceed depending on the animal species. Several studies in multiple organisms have shown that the effectiveness of tissue repair gradually decreases with age in most vertebrates, while the molecular and cellular mechanisms underlying the diverse potentials remain incompletely understood. It is clear, however, that immune system actively participates in the whole process and immune-related activities can mediate both negative and positive roles to influence the quality and diversity of tissue response to damage. Compared with innate immunity, our understanding of the significance of adaptive immune cells in normal repair outcome is limited and deserves further investigation. Here, experimental evidence supporting the contribution of lymphocytes and the involvement of lymphoid organs in skin wound healing are discussed, focusing on the findings emerged in adult amphibians, key animal models for tissue repair and regeneration research.
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Affiliation(s)
- Antonella Franchini
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, via Campi 213/D, 41125 Modena, Italy
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A frog cathelicidin peptide effectively promotes cutaneous wound healing in mice. Biochem J 2018; 475:2785-2799. [PMID: 30045878 PMCID: PMC6134359 DOI: 10.1042/bcj20180286] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 07/12/2018] [Accepted: 07/16/2018] [Indexed: 11/24/2022]
Abstract
Although cathelicidins in mammals have been well characterized, little is known about the function of cathelicidin in amphibians. In the present study, a novel 24-residue peptide (cathelicidin-NV, ARGKKECKDDRCRLLMKRGSFSYV) belonging to the cathelicidin family was identified from the skin of the plateau frog Nanorana ventripunctata. Cathelicidin-NV showed strong wound healing-promoting activity in a murine model with a full-thickness dermal wound. It directly enhanced the proliferation of keratinocyte cells, resulting in accelerated re-epithelialization of the wound site. Cathelicidin-NV also promoted the proliferation of fibroblasts, the differentiation of fibroblasts to myofibroblasts and collagen production in fibroblasts, which are implicated in wound contraction and repair processes. Furthermore, cathelicidin-NV promoted the release of monocyte chemoattractant protein-1, tumor necrosis factor-α, vascular endothelial growth factor and transforming growth factor-β1 in vivo and in vitro, which are essential in the wound-healing processes such as migration, proliferation and differentiation. The MAPK (ERK, JNK and p38) signaling pathways were involved in the wound healing-promoting effect. Additionally, unlike other cathelicidins, cathelicidin-NV did not have any direct effect on microbes and showed no cytotoxicity and hemolytic activity toward mammalian cells at concentrations up to 200 µg/ml. This current study may facilitate the understanding of the cellular and molecular events that underlie quick wound healing in N. ventripunctata. In addition, the combination of these properties makes cathelicidin-NV an excellent candidate for skin wound therapeutics.
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Yokoyama H, Kudo N, Todate M, Shimada Y, Suzuki M, Tamura K. Skin regeneration of amphibians: A novel model for skin regeneration as adults. Dev Growth Differ 2018; 60:316-325. [DOI: 10.1111/dgd.12544] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/18/2018] [Accepted: 05/20/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Hitoshi Yokoyama
- Department of Biochemistry and Molecular Biology; Faculty of Agriculture and Life Science; Hirosaki University; Hirosaki Aomori Japan
| | - Nanako Kudo
- Department of Biochemistry and Molecular Biology; Faculty of Agriculture and Life Science; Hirosaki University; Hirosaki Aomori Japan
| | - Momoko Todate
- Department of Biochemistry and Molecular Biology; Faculty of Agriculture and Life Science; Hirosaki University; Hirosaki Aomori Japan
| | - Yuri Shimada
- Department of Biochemistry and Molecular Biology; Faculty of Agriculture and Life Science; Hirosaki University; Hirosaki Aomori Japan
| | - Makoto Suzuki
- Division of Morphogenesis; National Institute for Basic Biology; National Institutes of Natural Sciences; Okazaki Aichi Japan
- Department of Basic Biology; School of Life Science; the Graduate University of Advanced Studies; Hayama Kanagawa Japan
| | - Koji Tamura
- Department of Developmental Biology and Neurosciences; Graduate School of Life Sciences; Tohoku University; Sendai Japan
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Busse SM, McMillen PT, Levin M. Cross-limb communication during Xenopus hind-limb regenerative response: non-local bioelectric injury signals. Development 2018; 145:dev.164210. [DOI: 10.1242/dev.164210] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/31/2018] [Indexed: 12/29/2022]
Abstract
Regeneration of damaged body-parts requires coordination of size, shape, location, and orientation of tissue with the rest of the body. It is not currently known how far injury sites communicate with the remaining soma during repair, or what information may emanate from the injury site to other regions. We examined the bioelectric properties (resting potential gradients in the epidermis) of Xenopus froglets undergoing hind-limb amputation and observed that the contralateral (un-damaged) limb exhibits apparent depolarization signals immediately after the opposite hind-limb is amputated. The pattern of depolarization matches that of the amputated limb and is correlated to the position and type of injury, revealing that information about damage is available to remote body tissues and is detectable non-invasively in vivo by monitoring of the bioelectric state. These data extend knowledge about the electrophysiology of regenerative response, identify a novel communication process via long-range spread of injury signaling, a phenomenon which we call bioelectric injury mirroring (BIM), and suggests revisions to regenerative medicine and diagnostic strategies focused entirely on the wound site and to the use of contralateral limbs as controls.
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Affiliation(s)
- Sera M. Busse
- Biology Department and Allen Discovery Center, Tufts University, Medford, MA 02155, USA
| | - Patrick T. McMillen
- Biology Department and Allen Discovery Center, Tufts University, Medford, MA 02155, USA
| | - Michael Levin
- Biology Department and Allen Discovery Center, Tufts University, Medford, MA 02155, USA
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Jacyniak K, McDonald RP, Vickaryous MK. Tail regeneration and other phenomena of wound healing and tissue restoration in lizards. J Exp Biol 2017; 220:2858-2869. [DOI: 10.1242/jeb.126862] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
ABSTRACT
Wound healing is a fundamental evolutionary adaptation with two possible outcomes: scar formation or reparative regeneration. Scars participate in re-forming the barrier with the external environment and restoring homeostasis to injured tissues, but are well understood to represent dysfunctional replacements. In contrast, reparative regeneration is a tissue-specific program that near-perfectly replicates that which was lost or damaged. Although regeneration is best known from salamanders (including newts and axolotls) and zebrafish, it is unexpectedly widespread among vertebrates. For example, mice and humans can replace their digit tips, while many lizards can spontaneously regenerate almost their entire tail. Whereas the phenomenon of lizard tail regeneration has long been recognized, many details of this process remain poorly understood. All of this is beginning to change. This Review provides a comparative perspective on mechanisms of wound healing and regeneration, with a focus on lizards as an emerging model. Not only are lizards able to regrow cartilage and the spinal cord following tail loss, some species can also regenerate tissues after full-thickness skin wounds to the body, transections of the optic nerve and even lesions to parts of the brain. Current investigations are advancing our understanding of the biological requirements for successful tissue and organ repair, with obvious implications for biomedical sciences and regenerative medicine.
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Affiliation(s)
- Kathy Jacyniak
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Rebecca P. McDonald
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Matthew K. Vickaryous
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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Li X, Wang Y, Zou Z, Yang M, Wu C, Su Y, Tang J, Yang X. OM-LV20, a novel peptide from odorous frog skin, accelerates wound healing in vitro and in vivo. Chem Biol Drug Des 2017. [PMID: 28650592 DOI: 10.1111/cbdd.13063] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The healing of chronic wounds remains a considerable challenge in clinical trials and imposes severe financial and physiological burdens on patients. Many works are being tried to find ideal clinical promoting wound healing biomaterials. Small bioactive peptides with low cost and easy production, store and transfer become excellent candidates. Here, we identified a novel peptide (named OM-LV20) from skin secretions of odorous frog Odorrana margaretae. The peptide had an amino acid sequence of "LVGKLLKGAVGDVCGLLPIC," contained an intramolecular disulfide bridge at the C-terminus, and was produced by post-translational processing of a 71-residue prepropeptide. Our results showed that OM-LV20 had no direct microbe-killing effects, hemolytic activity, or acute toxicity, but did exhibit weak antioxidant activity. OM-LV20 promoted wound healing against human keratinocytes (HaCaT) and human skin fibroblasts (HSF) in both time- and dose-dependent manners. In addition, it induced the proliferation of HaCaT but not HSF cells. Of note, OM-LV20 showed strong wound healing-promoting activity in a mice model of full-thickness skin wound. Our research indicates the cellular and animal level wound healing potential of OM-LV20, and thus provides a novel bioactive peptide template for the development of wound healing agents and medicine.
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Affiliation(s)
- Xiaojie Li
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Ying Wang
- Ethic Drug Screening & Pharmacology Center, Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission & Ministry of Education, Yunnan MinZu University, Kunming, Yunnan, China
| | - Zhirong Zou
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Meifeng Yang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Chunyun Wu
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Yunshan Su
- Department of Radiology, Second People's Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Jing Tang
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Xinwang Yang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
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Otsuka-Yamaguchi R, Kawasumi-Kita A, Kudo N, Izutsu Y, Tamura K, Yokoyama H. Cells from subcutaneous tissues contribute to scarless skin regeneration in Xenopus laevis froglets. Dev Dyn 2017; 246:585-597. [PMID: 28618059 DOI: 10.1002/dvdy.24520] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Mammals cannot regenerate the dermis and other skin structures after an injury and instead form a scar. However, a Xenopus laevis froglet can regenerate scarless skin, including the dermis and secretion glands, on the limbs and trunk after skin excision. Subcutaneous tissues in the limbs and trunk consist mostly of muscles. Although subcutaneous tissues beneath a skin injury appear disorganized, the cellular contribution of these underlying tissues to skin regeneration remains unclear. RESULTS We crossed the inbred J strain with a green fluorescent protein (GFP)-labeled transgenic Xenopus line to obtain chimeric froglets that have GFP-negative skin and GFP-labeled subcutaneous tissues and are not affected by immune rejection after metamorphosis. We found that GFP-positive cells from subcutaneous tissues contributed to regenerating the skin, especially the dermis, after an excision injury. We also showed that the skin on the head, which is over bone rather than muscle, can also completely regenerate skin structures. CONCLUSIONS Cells derived from subcutaneous tissues, at least in the trunk region, contribute to and may be essential for skin regeneration. Characterizing the subcutaneous tissue-derived cells that contribute to skin regeneration in amphibians may lead to the induction of cells that can regenerate complete skin structures without scarring in mammals. Developmental Dynamics 246:585-597, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Rina Otsuka-Yamaguchi
- Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Aiko Kawasumi-Kita
- Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Nanako Kudo
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
| | - Yumi Izutsu
- Department of Biology, Faculty of Science, Niigata University, Niigata, Japan
| | - Koji Tamura
- Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Hitoshi Yokoyama
- Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan.,Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
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Juárez-Morales JL, Martinez-De Luna RI, Zuber ME, Roberts A, Lewis KE. Zebrafish transgenic constructs label specific neurons in Xenopus laevis spinal cord and identify frog V0v spinal neurons. Dev Neurobiol 2017; 77:1007-1020. [PMID: 28188691 DOI: 10.1002/dneu.22490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/26/2017] [Accepted: 02/08/2017] [Indexed: 12/19/2022]
Abstract
A correctly functioning spinal cord is crucial for locomotion and communication between body and brain but there are fundamental gaps in our knowledge of how spinal neuronal circuitry is established and functions. To understand the genetic program that regulates specification and functions of this circuitry, we need to connect neuronal molecular phenotypes with physiological analyses. Studies using Xenopus laevis tadpoles have increased our understanding of spinal cord neuronal physiology and function, particularly in locomotor circuitry. However, the X. laevis tetraploid genome and long generation time make it difficult to investigate how neurons are specified. The opacity of X. laevis embryos also makes it hard to connect functional classes of neurons and the genes that they express. We demonstrate here that Tol2 transgenic constructs using zebrafish enhancers that drive expression in specific zebrafish spinal neurons label equivalent neurons in X. laevis and that the incorporation of a Gal4:UAS amplification cassette enables cells to be observed in live X. laevis tadpoles. This technique should enable the molecular phenotypes, morphologies and physiologies of distinct X. laevis spinal neurons to be examined together in vivo. We have used an islet1 enhancer to label Rohon-Beard sensory neurons and evx enhancers to identify V0v neurons, for the first time, in X. laevis spinal cord. Our work demonstrates the homology of spinal cord circuitry in zebrafish and X. laevis, suggesting that future work could combine their relative strengths to elucidate a more complete picture of how vertebrate spinal cord neurons are specified, and function to generate behavior. © 2017 Wiley Periodicals, Inc. Develop Neurobiol 77: 1007-1020, 2017.
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Affiliation(s)
- José L Juárez-Morales
- Department of Biology, Syracuse University, 107 College Place, Syracuse, New York, 13244.,Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY, United Kingdom
| | - Reyna I Martinez-De Luna
- The Center for Vision Research, Department of Ophthalmology, SUNY Upstate Medical University, Institute for Human Performance, 505 Irving Ave. Syracuse, New York, 13210
| | - Michael E Zuber
- The Center for Vision Research, Department of Ophthalmology, SUNY Upstate Medical University, Institute for Human Performance, 505 Irving Ave. Syracuse, New York, 13210
| | - Alan Roberts
- School of Biological Sciences, Bristol University, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom
| | - Katharine E Lewis
- Department of Biology, Syracuse University, 107 College Place, Syracuse, New York, 13244
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34
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Kur-Piotrowska A, Kopcewicz M, Kozak LP, Sachadyn P, Grabowska A, Gawronska-Kozak B. Neotenic phenomenon in gene expression in the skin of Foxn1- deficient (nude) mice - a projection for regenerative skin wound healing. BMC Genomics 2017; 18:56. [PMID: 28068897 PMCID: PMC5223329 DOI: 10.1186/s12864-016-3401-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/09/2016] [Indexed: 12/30/2022] Open
Abstract
Background Mouse fetuses up to 16 day of embryonic development and nude (Foxn1- deficient) mice are examples of animals that undergo regenerative (scar-free) skin healing. The expression of transcription factor Foxn1 in the epidermis of mouse fetuses begins at embryonic day 16.5 which coincides with the transition point from scar-free to scar-forming skin wound healing. In the present study, we tested the hypothesis that Foxn1 expression in the skin is an essential condition to establish the adult skin phenotype and that Foxn1 inactivity in nude mice keeps skin in the immature stage resembling the phenomena of neoteny. Results Uninjured skin of adult C57BL/6J (B6) mice, mouse fetuses at days 14 (E14) and 18 (E18) of embryonic development and B6.Cg-Foxn1 nu (nude) mice were characterized for their gene expression profiles by RNA sequencing that was validated through qRT-PCR, Western Blot and immunohistochemistry. Differentially regulated genes indicated that nude mice were more similar to E14 (model of regenerative healing) and B6 were more similar to E18 (model of reparative healing). The up-regulated genes in nude and E14 mice were associated with tissue remodeling, cytoskeletal rearrangement, wound healing and immune response, whereas the down-regulated genes were associated with differentiation. E14 and nude mice exhibit prominent up-regulation of keratin (Krt23, -73, -82, -16, -17), involucrin (Ivl) and filaggrin (Flg2) genes. The transcription factors associated with the Hox genes known to specify cell fate during embryonic development and promote embryonic stem cells differentiation were down-regulated in both nude and E14. Among the genes enriched in the nude skin but not shared with E14 fetuses were members of the Wnt and matrix metalloproteinases (Mmps) families whereas Bmp and Notch related genes were down-regulated. Conclusions In summary, Foxn1 appears to be a pivotal control element of the developmental program and skin maturation. Nude mice may be considered as a model of neoteny among mammals. The resemblance of gene expression profiles in the skin of both nude and E14 mice are direct or indirect consequences of the Foxn1 deficiency. Foxn1 appears to regulate the balance between cell proliferation and differentiation and its inactivity creates a pro-regenerative environment. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3401-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anna Kur-Piotrowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748, Olsztyn, Poland
| | - Marta Kopcewicz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748, Olsztyn, Poland
| | - Leslie P Kozak
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748, Olsztyn, Poland
| | - Pawel Sachadyn
- Department of Molecular Biotechnology and Microbiology, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-233, Gdansk, Poland
| | - Anna Grabowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748, Olsztyn, Poland
| | - Barbara Gawronska-Kozak
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748, Olsztyn, Poland.
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Mescher AL, Neff AW, King MW. Inflammation and immunity in organ regeneration. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 66:98-110. [PMID: 26891614 DOI: 10.1016/j.dci.2016.02.015] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/19/2016] [Accepted: 02/09/2016] [Indexed: 06/05/2023]
Abstract
The ability of vertebrates to regenerate amputated appendages is increasingly well-understood at the cellular level. Cells mediating an innate immune response and inflammation in the injured tissues are a prominent feature of the limb prior to formation of a regeneration blastema, with macrophage activity necessary for blastema growth and successful development of the new limb. Studies involving either anti-inflammatory or pro-inflammatory agents suggest that the local inflammation produced by injury and its timely resolution are both important for regeneration, with blastema patterning inhibited in the presence of unresolved inflammation. Various experiments with Xenopus larvae at stages where regenerative competence is declining show improved digit formation after treatment with certain immunosuppressive, anti-inflammatory, or antioxidant agents. Similar work with the larval Xenopus tail has implicated adaptive immunity with regenerative competence and suggests a requirement for regulatory T cells in regeneration, which also occurs in many systems of tissue regeneration. Recent analyses of the human nail organ indicate a capacity for local immune tolerance, suggesting roles for adaptive immunity in the capacity for mammalian appendage regeneration. New information and better understanding regarding the neuroendocrine-immune axis in the response to stressors, including amputation, suggest additional approaches useful for investigating effects of the immune system during repair and regeneration.
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Affiliation(s)
- Anthony L Mescher
- Center for Developmental and Regenerative Biology; Indiana University School of Medicine - Bloomington, USA.
| | - Anton W Neff
- Center for Developmental and Regenerative Biology; Indiana University School of Medicine - Bloomington, USA.
| | - Michael W King
- Center for Developmental and Regenerative Biology; Indiana University School of Medicine - Terre Haute, USA.
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36
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Li J, Zhang S, Amaya E. The cellular and molecular mechanisms of tissue repair and regeneration as revealed by studies in Xenopus. ACTA ACUST UNITED AC 2016; 3:198-208. [PMID: 27800170 PMCID: PMC5084359 DOI: 10.1002/reg2.69] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 09/09/2016] [Accepted: 09/12/2016] [Indexed: 12/16/2022]
Abstract
Survival of any living organism critically depends on its ability to repair and regenerate damaged tissues and/or organs during its lifetime following injury, disease, or aging. Various animal models from invertebrates to vertebrates have been used to investigate the molecular and cellular mechanisms of wound healing and tissue regeneration. It is hoped that such studies will form the framework for identifying novel clinical treatments that will improve the healing and regenerative capacity of humans. Amongst these models, Xenopus stands out as a particularly versatile and powerful system. This review summarizes recent findings using this model, which have provided fundamental knowledge of the mechanisms responsible for efficient and perfect tissue repair and regeneration.
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Affiliation(s)
- Jingjing Li
- Division of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of BiologyMedicine and HealthUniversity of ManchesterManchesterM13 9PTUK
| | - Siwei Zhang
- Division of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of BiologyMedicine and HealthUniversity of ManchesterManchesterM13 9PTUK
| | - Enrique Amaya
- Division of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of BiologyMedicine and HealthUniversity of ManchesterManchesterM13 9PTUK
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37
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Franchini A, Della Rocca A, Bertolotti E. The spleen and skin wound healing inXenopusadults. J Morphol 2016; 277:888-95. [DOI: 10.1002/jmor.20542] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/16/2016] [Accepted: 03/05/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Antonella Franchini
- Department of Life Sciences; University of Modena and Reggio Emilia; Modena, via Campi 213/D Modena 41125 Italy
| | - Annalaura Della Rocca
- Department of Life Sciences; University of Modena and Reggio Emilia; Modena, via Campi 213/D Modena 41125 Italy
| | - Evelina Bertolotti
- Department of Life Sciences; University of Modena and Reggio Emilia; Modena, via Campi 213/D Modena 41125 Italy
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38
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Romar GA, Kupper TS, Divito SJ. Research Techniques Made Simple: Techniques to Assess Cell Proliferation. J Invest Dermatol 2016; 136:e1-e7. [DOI: 10.1016/j.jid.2015.11.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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39
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Peacock HM, Gilbert EAB, Vickaryous MK. Scar-free cutaneous wound healing in the leopard gecko, Eublepharis macularius. J Anat 2015; 227:596-610. [PMID: 26360824 PMCID: PMC4609196 DOI: 10.1111/joa.12368] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2015] [Indexed: 12/13/2022] Open
Abstract
Cutaneous wounds heal with two possible outcomes: scarification or near-perfect integumentary restoration. Whereas scar formation has been intensively investigated, less is known about the tissue-level events characterising wounds that spontaneously heal scar-free, particularly in non-foetal amniotes. Here, a spatiotemporal investigation of scar-free cutaneous wound healing following full-thickness excisional biopsies to the tail and body of leopard geckos (Eublepharis macularius) is provided. All injuries healed without scarring. Cutaneous repair involves the development of a cell-rich aggregate within the wound bed, similar to scarring wounds. Unlike scar formation, scar-free healing involves a more rapid closure of the wound epithelium, and a delay in blood vessel development and collagen deposition within the wound bed. It was found that, while granulation tissue of scarring wounds is hypervascular, scar-free wound healing conspicuously does not involve a period of exuberant blood vessel formation. In addition, during scar-free wound healing the newly formed blood vessels are typically perivascular cell-supported. Immunohistochemistry revealed widespread expression of both the pro-angiogenic factor vascular endothelial growth factor A and the anti-angiogenic factor thrombospondin-1 within the healing wound. It was found that scar-free wound healing is an intrinsic property of leopard gecko integument, and involves a modulation of the cutaneous scar repair program. This proportional revascularisation is an important factor in scar-free wound healing.
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Affiliation(s)
- Hanna M Peacock
- Department of Biomedical Sciences, Ontario Veterinary College, University of GuelphGuelph, ON, Canada
| | - Emily A B Gilbert
- Department of Biomedical Sciences, Ontario Veterinary College, University of GuelphGuelph, ON, Canada
| | - Matthew K Vickaryous
- Department of Biomedical Sciences, Ontario Veterinary College, University of GuelphGuelph, ON, Canada
- Correspondence, Matthew K. Vickaryous, Associate Professor, Department of Biomedical Science, University of Guelph, 50 Stone Road East, Guelph, ON, Canada N1G 2W1. T: 1-519-760-2374 x 53871; E:
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40
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Lehrberg J, Gardiner DM. Regulation of Axolotl (Ambystoma mexicanum) Limb Blastema Cell Proliferation by Nerves and BMP2 in Organotypic Slice Culture. PLoS One 2015; 10:e0123186. [PMID: 25923915 PMCID: PMC4414535 DOI: 10.1371/journal.pone.0123186] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 03/02/2015] [Indexed: 11/18/2022] Open
Abstract
We have modified and optimized the technique of organotypic slice culture in order to study the mechanisms regulating growth and pattern formation in regenerating axolotl limb blastemas. Blastema cells maintain many of the behaviors that are characteristic of blastemas in vivo when cultured as slices in vitro, including rates of proliferation that are comparable to what has been reported in vivo. Because the blastema slices can be cultured in basal medium without fetal bovine serum, it was possible to test the response of blastema cells to signaling molecules present in serum, as well as those produced by nerves. We also were able to investigate the response of blastema cells to experimentally regulated changes in BMP signaling. Blastema cells responded to all of these signals by increasing the rate of proliferation and the level of expression of the blastema marker gene, Prrx-1. The organotypic slice culture model provides the opportunity to identify and characterize the spatial and temporal co-regulation of pathways in order to induce and enhance a regenerative response.
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Affiliation(s)
- Jeffrey Lehrberg
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, California, United States of America
| | - David M. Gardiner
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, California, United States of America
- * E-mail:
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Abstract
The skin is a complex organ consisting of the epidermis, dermis, and skin appendages, including the hair follicle and sebaceous gland. Wound healing in adult mammals results in scar formation without any skin appendages. Studies have reported remarkable examples of scarless healing in fetal skin and appendage regeneration in adult skin following the infliction of large wounds. The models used in these studies have offered a new platform for investigations of the cellular and molecular mechanisms underlying wound healing and skin regeneration in mammals. In this article, we will focus on the contribution of skin appendages to wound healing and, conversely, skin appendage regeneration following injuries.
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Affiliation(s)
- Makoto Takeo
- The Ronald O. Perelman Department of Dermatology, New York University, School of Medicine, New York, New York 10016 Department of Cell Biology, New York University, School of Medicine, New York, New York 10016
| | - Wendy Lee
- The Ronald O. Perelman Department of Dermatology, New York University, School of Medicine, New York, New York 10016 Department of Cell Biology, New York University, School of Medicine, New York, New York 10016
| | - Mayumi Ito
- The Ronald O. Perelman Department of Dermatology, New York University, School of Medicine, New York, New York 10016 Department of Cell Biology, New York University, School of Medicine, New York, New York 10016
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42
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Franchini A, Bertolotti E. The thymus and skin wound healing in Xenopus laevis adults. Acta Histochem 2014; 116:1141-7. [PMID: 24998030 DOI: 10.1016/j.acthis.2014.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 05/27/2014] [Accepted: 05/28/2014] [Indexed: 01/07/2023]
Abstract
The capacity to heal wounds without scars is generally lost during the development in vertebrates. To explore the involvement of cells of the adaptive immune system in a scar-like tissue based repair, we studied the thymus in 15-month-old Xenopus after skin incisional wounding. After injury, the organ size significantly increased and marked changes in structure and TNF-α immunoreactivity were detected in the medullary microenvironment when the granulation tissue was present in the repair area. Most of the lymphocytes present in this wound connective tissue were found to be immunoreactive to specific T cell markers. Thymic mucocyte-like cells and epithelial cysts increased in number, the myoid cells acquired a faster turnover and associated in large clusters, blood vessels were dilated and corpuscles similar to mammalian Hassall's bodies were formed in medulla. A higher number of stronger medullary TNF-α immunoreactive cells, i.e., dendritic, epithelial, granular basophilic and myoid cells were also induced after wounding. With progression of healing the thymus gradually returned to histochemical patterns of controls. Our results suggest that during the scar-based skin repair of Xenopus adults the activity of the thymus may be stimulated and associated with the T lymphocyte infiltration observed into injured granulation tissue.
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Mu L, Tang J, Liu H, Shen C, Rong M, Zhang Z, Lai R. A potential wound-healing-promoting peptide from salamander skin. FASEB J 2014; 28:3919-29. [PMID: 24868009 DOI: 10.1096/fj.13-248476] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 05/12/2014] [Indexed: 11/11/2022]
Abstract
Although it is well known that wound healing proceeds incredibly quickly in urodele amphibians, such as newts and salamanders, little is known about skin-wound healing, and no bioactive/effector substance that contributes to wound healing has been identified from these animals. As a step toward understanding salamander wound healing and skin regeneration, a potential wound-healing-promoting peptide (tylotoin; KCVRQNNKRVCK) was identified from salamander skin of Tylototriton verrucosus. It shows comparable wound-healing-promoting ability (EC50=11.14 μg/ml) with epidermal growth factor (EGF; NSDSECPLSHDGYCLHDGVCMYIEALDKYACNCVVGYIGERCQYRDLKWWELR) in a murine model of full-thickness dermal wound. Tylotoin directly enhances the motility and proliferation of keratinocytes, vascular endothelial cells, and fibroblasts, resulting in accelerated reepithelialization and granulation tissue formation in the wound site. Tylotoin also promotes the release of transforming growth factor β1 (TGF-β1) and interleukin 6 (IL-6), which are essential in the wound healing response. Gene-encoded tylotoin secreted in salamander skin is possibly an effector molecule for skin wound healing. This study may facilitate understanding of the cellular and molecular events that underlie quick wound healing in salamanders.
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Affiliation(s)
- Lixian Mu
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Tang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Han Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Chuanbin Shen
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Mingqiang Rong
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and
| | - Zhiye Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; and
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Egawa S, Miura S, Yokoyama H, Endo T, Tamura K. Growth and differentiation of a long bone in limb development, repair and regeneration. Dev Growth Differ 2014; 56:410-24. [PMID: 24860986 DOI: 10.1111/dgd.12136] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/27/2014] [Accepted: 03/27/2014] [Indexed: 12/25/2022]
Abstract
Repair from traumatic bone fracture is a complex process that includes mechanisms of bone development and bone homeostasis. Thus, elucidation of the cellular/molecular basis of bone formation in skeletal development would provide valuable information on fracture repair and would lead to successful skeletal regeneration after limb amputation, which never occurs in mammals. Elucidation of the basis of epimorphic limb regeneration in amphibians would also provide insights into skeletal regeneration in mammals, since the epimorphic regeneration enables an amputated limb to re-develop the three-dimensional structure of bones. In the processes of bone development, repair and regeneration, growth of the bone is achieved through several events including not only cell proliferation but also aggregation of mesenchymal cells, enlargement of cells, deposition and accumulation of extracellular matrix, and bone remodeling.
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Affiliation(s)
- Shiro Egawa
- Department of Developmental Biology and Neurosciences, Graduate School of Life Sciences, Tohoku University, Aobayama 6-3, Aoba-ku, Sendai, 980-8578, Japan
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Gawronska-Kozak B, Grabowska A, Kopcewicz M, Kur A. Animal models of skin regeneration. Reprod Biol 2014; 14:61-7. [DOI: 10.1016/j.repbio.2014.01.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 01/08/2014] [Indexed: 12/16/2022]
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Liu H, Mu L, Tang J, Shen C, Gao C, Rong M, Zhang Z, Liu J, Wu X, Yu H, Lai R. A potential wound healing-promoting peptide from frog skin. Int J Biochem Cell Biol 2014; 49:32-41. [PMID: 24441016 DOI: 10.1016/j.biocel.2014.01.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/03/2014] [Accepted: 01/10/2014] [Indexed: 10/25/2022]
Abstract
Cutaneous wound healing is a dynamic, complex, and well-organized process that requires the orchestration of many different cell types and cellular processes. Transforming growth factor β1 is an important factor that plays a key role during wound healing. Amphibian skin has been proven to possess excellent wound healing ability, whilst no bioactive substrate related to it has ever been identified. Here, a potential wound healing-promoting peptide (AH90, ATAWDFGPHGLLPIRPIRIRPLCG) was identified from the frog skin of Odorrana grahami. It showed potential wound healing-promoting activity in a murine model with full thickness dermal wound. AH90 promoted release of transforming growth factor β1 through activation of nuclear factor-κB and c-Jun NH2-terminal kinase mitogen-activated protein kinases signaling pathways, while inhibitors of nuclear factor-κB and c-Jun NH2-terminal kinase inhibited the process. In addition, the effects of AH90 on Smads family proteins, key regulators in transforming growth factor β1 signaling pathways, could also be inhibited by transforming growth factor β1 antibody. Altogether, this indicated that AH90 promoted wound healing by inducing the release of transforming growth factor β1. This current study may facilitate the understanding of effective factors involved in the wound repair of amphibians and the underlying mechanisms as well. Considering its favorable traits as a small peptide that greatly promoting generation of endogenous wound healing agents (transforming growth factor β1) without mitogenic effects, AH90 might be an excellent template for the future development of novel wound-healing agents.
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Affiliation(s)
- Han Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Lixian Mu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Jing Tang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Chuanbin Shen
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Chen Gao
- College of Veterinary Medicine of Jiangsu Animal Husbandry & Veterinary College, Taizhou 225300, Jiangsu, China
| | - Mingqiang Rong
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China
| | - Zhiye Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Jie Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100009, China
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Haining Yu
- Institute of Marine Biological Technology, School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming 650223, Yunnan, China.
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Seifert AW, Maden M. New insights into vertebrate skin regeneration. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 310:129-69. [PMID: 24725426 DOI: 10.1016/b978-0-12-800180-6.00004-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Regeneration biology has experienced a renaissance as clinicians, scientists, and engineers have combined forces to drive the field of regenerative medicine. Studies investigating the mechanisms that regulate wound healing in adult mammals have led to a good understanding of the stereotypical processes that lead to scarring. Despite comparative studies of fetal wound healing in which no scar is produced, the fact remains that insights from this work have failed to produce therapies that can regenerate adult human skin. In this review, we analyze past and contemporary accounts of wound healing in a variety of vertebrates, namely, fish, amphibians, and mammals, in order to demonstrate how examples of skin regeneration in adult organisms can impact traditional wound-healing research. When considered together, these studies suggest that inflammation and reepithelialization are necessary events preceding both scarring and regeneration. However, the extent to which these processes may direct one outcome over another is likely weaker than currently accepted. In contrast, the extent to which newly deposited extracellular matrix in the wound bed can be remodeled into new skin, and the intrinsic ability of new epidermis to regenerate appendages, appears to underlie the divergence between scar-free healing and the persistence of a scar. We discuss several ideas that may offer areas of overlap between researchers using these different model organisms and which may be of benefit to the ultimate goal of scar-free human wound healing.
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Affiliation(s)
- Ashley W Seifert
- Department of Biology, University of Kentucky, Lexington, Kentucky, USA
| | - Malcolm Maden
- Department of Biology and UF Genetics Institute, University of Florida, Gainesville, Florida, USA.
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Haslam IS, Roubos EW, Mangoni ML, Yoshizato K, Vaudry H, Kloepper JE, Pattwell DM, Maderson PFA, Paus R. From frog integument to human skin: dermatological perspectives from frog skin biology. Biol Rev Camb Philos Soc 2013; 89:618-55. [DOI: 10.1111/brv.12072] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 10/03/2013] [Accepted: 10/22/2013] [Indexed: 12/15/2022]
Affiliation(s)
- Iain S. Haslam
- The Dermatology Centre, Salford Royal NHS Foundation Trust, Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT U.K
| | - Eric W. Roubos
- Department of Anatomy; Radboud University Medical Centre; Geert Grooteplein Noord 2, 6525 EZ, Nijmegen P.O. Box 9101, 6500 HB Nijmegen The Netherlands
| | - Maria Luisa Mangoni
- Department of Biochemical Sciences, Istituto Pasteur-Fondazione Cenci Bolognetti; La Sapienza University of Rome, Piazzale Aldo Moro, 5-00185; Rome Italy
| | - Katsutoshi Yoshizato
- Academic Advisors Office, Synthetic Biology Research Center; Osaka City University Graduate School of Medicine; Osaka Japan
- Phoenixbio Co. Ltd; 3-4-1, Kagamiyama; Higashihiroshima Hiroshima 739-0046 Japan
| | - Hubert Vaudry
- European Institute for Peptide Research; University of Rouen; Mont-Saint-Aignan Place Emile Blondel 76821 France
- INSERM U-982, CNRS; University of Rouen; Mont-Saint-Aignan Place Emile Blondel 76821 France
| | - Jennifer E. Kloepper
- Klinik für Dermatologie, Allergologie und Venerologie; Universitätsklinikum Schleswig-Holstein, Ratzeburger Allee 160; 23538 Lübeck Germany
| | - David M. Pattwell
- Leahurst Campus, Institute of Learning & Teaching; School of Veterinary Science, University of Liverpool; Neston CH64 7TE U.K
| | | | - Ralf Paus
- The Dermatology Centre, Salford Royal NHS Foundation Trust, Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT U.K
- Klinik für Dermatologie, Allergologie und Venerologie; Universitätsklinikum Schleswig-Holstein, Ratzeburger Allee 160; 23538 Lübeck Germany
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49
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Kawasumi A, Sagawa N, Hayashi S, Yokoyama H, Tamura K. Wound healing in mammals and amphibians: toward limb regeneration in mammals. Curr Top Microbiol Immunol 2013; 367:33-49. [PMID: 23263248 DOI: 10.1007/82_2012_305] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mammalian fetal skin regenerates perfectly, but adult skin repairs by the formation of scar tissue. The cause of this imperfect repair by adult skin is not understood. In contrast, wounded adult amphibian (urodeles and anurans) skin is like mammalian fetal skin in that it repairs by regeneration, not scarring. Scar-free wound repair in adult Xenopus is associated with expression of the paired homeobox transcription factor Prx1 by mesenchymal cells of the wound, a feature shared by mesenchymal cells of the regeneration blastema of the axolotl limb. Furthermore, mesenchymal cells of Xenopus skin wounds that harbor the mouse Prx1-limb-enhancer as a transgene exhibit activation of the enhancer despite the fact that they are Xenopus cells, suggesting that the mouse Prx1 enhancer possesses all elements required for its activation in skin wound healing, even though activation of the same enhancer in the mouse is not seen in the wounded skin of an adult mouse. Elucidation of the role of the Prx1 gene in amphibian skin wound healing will help to clarify the molecular mechanisms of scarless wound healing. Shifting the molecular mechanism of wound repair in mammals to that of amphibians, including reactivation of the Prx1-limb-enhancer, will be an important clue to stimulate scarless wound repair in mammalian adult skin. Finding or creating Prx1-positive stem cells in adult mammal skin by activating the Prx1-limb-enhancer may be a fast and reliable way to provide for scarless skin wound repair, and even directly lead to limb regeneration in mammals.
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Affiliation(s)
- Aiko Kawasumi
- Department of Developmental Biology and Neurosciences, Tohoku University, Sendai, Japan
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50
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Denis JF, Lévesque M, Tran SD, Camarda AJ, Roy S. Axolotl as a Model to Study Scarless Wound Healing in Vertebrates: Role of the Transforming Growth Factor Beta Signaling Pathway. Adv Wound Care (New Rochelle) 2013; 2:250-260. [PMID: 24527347 DOI: 10.1089/wound.2012.0371] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 01/09/2023] Open
Abstract
SIGNIFICANCE The skin is our largest organ, with the primary role of protection against assaults from the outside world. It also suffers frequent damage, from minor scrapes to, more rarely, complete destruction such as in third-degree burns. It is therefore, by its nature, an organ that would benefit tremendously from being able to regenerate itself. RECENT ADVANCES This review highlights the axolotl, a less well-known model organism capable of scarless wound healing and regeneration. Axolotls are salamanders with unsurpassed healing and regenerative capacities. Understanding how these animals can regenerate their tissues could help identify the pathways that need to be activated or inhibited in humans to improve wound healing. CRITICAL ISSUES Presently, there are no therapies leading to skin regeneration or scarless wound healing. Various animal models have thus been developed for use in research, such as mice and pigs, to help us understand how wound healing could be improved or stimulated. However, these more common models cannot regenerate and, consequently, cannot direct us toward a solution to regenerate damaged tissues. Axolotls, on the other hand, can regenerate perfectly and therefore may offer avenues to identify molecular targets for therapeutic intervention. FUTURE DIRECTIONS Identifying signaling pathways regulating tissue regeneration in vertebrate models is important. The use of animals such as axolotls, which hold the secret of full regeneration, will likely play a significant role in helping us achieve scarless wound healing for humans.
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Affiliation(s)
| | | | - Simon D. Tran
- Department of Faculty of Dentistry, McGill University, Montreal, Canada
| | | | - Stéphane Roy
- Department of Biochemistry, McGill University, Montreal, Canada
- Department of Stomatology, University of Montreal, Montreal, Canada
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