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Rogujski P, Lukomska B, Janowski M, Stanaszek L. Glial-restricted progenitor cells: a cure for diseased brain? Biol Res 2024; 57:8. [PMID: 38475854 DOI: 10.1186/s40659-024-00486-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The central nervous system (CNS) is home to neuronal and glial cells. Traditionally, glia was disregarded as just the structural support across the brain and spinal cord, in striking contrast to neurons, always considered critical players in CNS functioning. In modern times this outdated dogma is continuously repelled by new evidence unravelling the importance of glia in neuronal maintenance and function. Therefore, glia replacement has been considered a potentially powerful therapeutic strategy. Glial progenitors are at the center of this hope, as they are the source of new glial cells. Indeed, sophisticated experimental therapies and exciting clinical trials shed light on the utility of exogenous glia in disease treatment. Therefore, this review article will elaborate on glial-restricted progenitor cells (GRPs), their origin and characteristics, available sources, and adaptation to current therapeutic approaches aimed at various CNS diseases, with particular attention paid to myelin-related disorders with a focus on recent progress and emerging concepts. The landscape of GRP clinical applications is also comprehensively presented, and future perspectives on promising, GRP-based therapeutic strategies for brain and spinal cord diseases are described in detail.
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Affiliation(s)
- Piotr Rogujski
- NeuroRepair Department, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Barbara Lukomska
- NeuroRepair Department, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Miroslaw Janowski
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, MD, USA
| | - Luiza Stanaszek
- NeuroRepair Department, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106, Warsaw, Poland.
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2
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Huang W, Guo Y, Han X, Xie X. Effect and mechanisms of puerarin on the treatment of postmenopausal osteoporosis: A preliminary pre-clinical study. Asian J Surg 2023; 46:1332-1333. [PMID: 36117060 DOI: 10.1016/j.asjsur.2022.08.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/25/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Weiwei Huang
- Clinical College of Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou, 730000, China.
| | - Yunlong Guo
- Clinical College of Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou, 730000, China.
| | - Xianfu Han
- Clinical College of Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou, 730000, China
| | - Xingwen Xie
- Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou, 730000, China.
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3
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Rahmannia M, Amini A, Chien S, Bayat M. Impact of photobiomodulation on macrophages and their polarization during diabetic wound healing: a systematic review. Lasers Med Sci 2022; 37:2805-2815. [PMID: 35635648 DOI: 10.1007/s10103-022-03581-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/24/2022] [Indexed: 02/01/2023]
Abstract
This review aims to providing essential information and the current knowledge about the potential role of macrophages, especially their M2 subtypes in different diabetic wounds both in clinical and pre-clinical models under the influence of photobiomodulation (PBM). The long-term goal is to advance the macrophage-based therapies to accelerate healing of diabetic foot ulcers. We reviewed all databases provided by PubMed, Google Scholar, Scopus, Web of Science, and Cochrane precisely from their dates of inception to 25/10/2021. The keywords of Diabetes mellitus diseases, wound healing, macrophage, and photobiomodulation or low-level laser therapy were used in this systematic review.A total of 438 articles were initially identified in pubmed.ncbi.nlm.nih.gov (15 articles), Google scholar (398 articles), Scopus (18 articles), and Web of Science (7 articles). Four hundred sixteen articles that remained after duplicate studies (22 articles) were excluded. After screening abstracts and full texts, 14 articles were included in our analysis. Among them, 4 articles were about the effect of PBM on macrophages in type 2 diabetes and also found 10 articles about the impact of PBM on macrophages in type 1 diabetes. The obtained data from most of the reviewed studies affirmed that the PBM alone or combined with other agents (e.g., stem cells) could moderate the inflammatory response and accelerate the wound healing process in pre-clinical diabetic wound models. However, only very few studies conducted the detailed functions of polarized macrophages and M2 subtypes in wound healing of diabetic models under the influence of PBM. Further pre-clinical and clinical investigations are still needed to investigate the role of M2 macrophages, especially its M2c subtype, in the healing processes of diabetic foot ulcers in clinical and preclinical settings.
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Affiliation(s)
- Maryam Rahmannia
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abdollah Amini
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sufan Chien
- Price Institute of Surgical Research, University of Louisville; and Noveratech LLC of Louisville, Louisville, KY, USA.
| | - Mohammad Bayat
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. .,Price Institute of Surgical Research, University of Louisville; and Noveratech LLC of Louisville, Louisville, KY, USA.
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4
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Hsu CH, Huang WC, Chang WT. Future Perspectives of Pulmonary Hypertension Treatment. Acta Cardiol Sin 2022; 38:435-442. [PMID: 35873130 PMCID: PMC9295042 DOI: 10.6515/acs.202207_38(4).20220331a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/31/2022] [Indexed: 01/24/2023]
Abstract
Since the discovery of three major pathophysiological mechanisms of pulmonary arterial hypertension (PAH), including prostacyclin, endothelin and nitric oxide pathways, the therapeutic options for PAH have increased. Nevertheless, despite these advances, the prognosis remains unsatisfactory for many patients with PAH. With the progress of both pre-clinical and clinical research on PAH, several novel therapeutic targets have been identified for the treatment of PAH. In this study, we review updated information of novel pathophysiological pathways of pulmonary hypertension, mainly focusing on WHO Group I PAH. Drugs based on these pathways are currently under clinical or pre-clinical investigation, however they have been approved for clinical use. Large clinical trials are required to validate the clinical safety and effects of these novel therapies.
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Affiliation(s)
- Chih-Hsin Hsu
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan;
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Department of Internal Medicine, National Cheng Kung University Hospital, Dou-Liou Branch, Yunlin;
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Department of Respiratory Therapy, College of Medicine, Kaohsiung Medical University
| | - Wei-Chun Huang
- Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung;
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College of Medicine, National Yang Ming Chiao Tung University, Taipei
| | - Wei-Ting Chang
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center;
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Department of Biotechnology, Southern Taiwan University of Science and Technology;
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Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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5
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Gonçalves FC, Mascaro BA, Scardueli CR, de Oliveira GJPL, Spolidorio LC, Marcantonio RAC. Strontium ranelate improves post-extraction socket healing in rats submitted to the administration of bisphosphonates. Odontology 2022. [PMID: 35041107 DOI: 10.1007/s10266-021-00678-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the effect of strontium ranelate (Sr) on post-extraction socket healing in rats submitted to the administration of bisphosphonates. Sixty rats were submitted to the tooth extraction of the first lower molar after 60 days of the daily administration of saline solution (SS) or alendronate (ALN). Then, the animals were allocated into six groups namely CTR: administration of SS during the whole experiment, ALN: administration of ALN during the whole experiment, ALN/SS: application of SS for 30 days after extraction in animals previously treated with ALN, ALN/Sr: application of Sr for 30 days after extraction in animals previously treated with ALN, ALN/S60: ALN therapy interruption 30 days before the extraction followed by the application of SS for 60 days, and ALN/Sr60: ALN therapy interruption 30 days before the tooth extraction followed by the application of Sr for 60 days. The healing of the post-extraction sockets was evaluated by microCT and histomorphometry. The use of ALN induced partial bone necrosis, inflammatory infiltration, and a delay in soft tissue healing; the use of Sr improved the connective tissue organization. Sr has subtle positive effects on the post-extraction healing in animals submitted to the administration of bisphosphonate.
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Labussiere M, Badran Z, Rethore G, Verner C, Soueidan A, Struillou X. Combination of bone substitutes and vectors in periodontology and implantology: A systematic review. Dent Mater J 2021; 40:839-852. [PMID: 34121025 DOI: 10.4012/dmj.2020-361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
The aim of the systematic review was to analyze the use of combination of bone substitutes and vectors in periodontology and implantology among animals models and humans. Electronic databases were searched, and additional hand search was performed. The research strategy was achieved according to the PRISMA guidelines. The including criteria were: combination of bone substitutes and vectors, in vivo studies, a precise number of specimens, histological and radiographic analysis, written in English. The risk of bias was evaluated for individual studies. Thirty-two articles were selected and investigated in this systematic review. The results do not show a superiority of the use of composite biomaterial in comparison with simple biomaterial but suggest the efficacity of their utilization as a carrier of bioactive agents. Future studies need to identify the suitable association of bone substitutes and vectors and explore interest in their use such as the support of growth factors.
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Affiliation(s)
- Marion Labussiere
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Zahi Badran
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes.,Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes
| | - Gildas Rethore
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes
| | - Christian Verner
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Assem Soueidan
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes.,Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes
| | - Xavier Struillou
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes.,Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes
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7
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Liu X, Ji J, Zhao GQ. General anesthesia affecting on developing brain: evidence from animal to clinical research. J Anesth 2020; 34:765-772. [PMID: 32601887 PMCID: PMC7511469 DOI: 10.1007/s00540-020-02812-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 06/06/2020] [Indexed: 11/29/2022]
Abstract
As the recent update of General anaesthesia compared to spinal anaesthesia (GAS) studies has been published in 2019, together with other clinical evidence, the human studies provided an overwhelming mixed evidence of an association between anaesthesia exposure in early childhood and later neurodevelopment changes in children. Pre-clinical studies in animals provided strong evidence on how anaesthetic and sedative agents (ASAs) causing neurotoxicity in developing brain and deficits in long-term cognitive functions. However pre-clinical results cannot translate to clinical practice directly. Three well designed large population-based human studies strongly indicated that a single brief exposure to general anesthesia (GAs) is not associated with any long-term neurodevelopment deficits in children's brain. Multiple exposure might cause decrease in processing speed and motor skills of children. However, the association between GAs and neurodevelopment in children is still inconclusive. More clinical studies with larger scale observations, randomized trials with longer duration exposure of GAs and follow-ups, more sensitive outcome measurements, and strict confounder controls are needed in the future to provide more conclusive and informative data. New research area has been developed to contribute in finding solutions for clinical practice as attenuating the neurotoxic effect of ASAs. Xenon and Dexmedetomidine are already used in clinical setting as neuroprotection and anaesthetic sparing-effect, but more research is still needed.
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Affiliation(s)
- Xinyue Liu
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Jing Ji
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Guo-Qing Zhao
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China.
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Portron S, Soueidan A, Marsden AC, Rakic M, Verner C, Weiss P, Badran Z, Struillou X. Periodontal regenerative medicine using mesenchymal stem cells and biomaterials: A systematic review of pre-clinical studies. Dent Mater J 2019; 38:867-883. [PMID: 31511473 DOI: 10.4012/dmj.2018-315] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
The aim of the systematic review was to analyze the use of mesenchymal stem cells (MSC) and biomaterial for periodontal regeneration from preclinical animal models and human. Electronic databases were searched and additional hand-search in leading journals was performed. The research strategy was achieved according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The including criteria were as follows: MSC, biomaterial, in vivo studies, with histologic and radiologic analysis and written in English. The risk of bias was assessed for individual studies. A total of 50 articles were selected and investigated in the systematic review. These results indicate that MSC and scaffold provide beneficial effects on periodontal regeneration, with no adverse effects of such interventions. Future studies need to identify the suitable association of MSC and biomaterial and to characterize the type of new cementum and the organization of the periodontal ligament fiber regeneration.
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Affiliation(s)
- Sophie Portron
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes.,Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Assem Soueidan
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes.,Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Anne-Claire Marsden
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Mia Rakic
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes.,Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Christian Verner
- Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Pierre Weiss
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes
| | - Zahi Badran
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes.,Department of Periodontology, Faculty of Dental Surgery, University of Nantes
| | - Xavier Struillou
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes.,Department of Periodontology, Faculty of Dental Surgery, University of Nantes
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9
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Liu L, Wong CW, Han M, Farhoodi HP, Liu G, Liu Y, Liao W, Zhao W. Meta-analysis of preclinical studies of mesenchymal stromal cells to treat rheumatoid arthritis. EBioMedicine 2019; 47:563-577. [PMID: 31501076 PMCID: PMC6796567 DOI: 10.1016/j.ebiom.2019.08.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 12/09/2022] Open
Abstract
Background This study aims to evaluate the quality of preclinical data, determine the effect sizes, and identify experimental measures that inform efficacy using mesenchymal stromal (or stem) cells (MSC) therapy in animal models of rheumatoid arthritis (RA). Methods Literature searches were performed on MSC preclinical studies to treat RA. MSC treatment effect sizes were determined by the most commonly used outcome measures, including paw thickness, clinical score, and histological score. Findings A total of 48 studies and 94 treatment arms were included, among which 42 studies and 79 treatment arms reported that MSC improved outcomes. The effect sizes of RA treatments using MSC, when compared to the controls, were: paw thickness was ameliorated by 53.6% (95% confidence interval (CI): 26.7% −80.4%), histological score was decreased by 44.9% (95% CI: 33.3% −56.6%), and clinical score was decreased by 29.9% (95% CI: 16.7% −43.0%). Specifically, our results indicated that human umbilical cord derived MSC led to large improvements of the clinical score (−42.1%) and histological score (−51.4%). Interpretation To the best of our knowledge, this meta-analysis is to quantitatively answer whether MSC represent a robust RA treatment in animal models. It suggests that in preclinical studies, MSC have consistently exhibited therapeutic benefits. The findings demonstrate a need for considering variations in different animal models and treatment protocols in future studies using MSC to treat RA in humans to maximise the therapeutic gains in the era of precision medicine. Funds NIH [1DP2CA195763], Baylx Inc.: BI-206512, NINDS/NIH Training Grant [Award# NS082174].
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Affiliation(s)
- Linan Liu
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA
| | - Chi W Wong
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA
| | - Menglu Han
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA
| | - Henry P Farhoodi
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA
| | - Guangyang Liu
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Surgery, University of California-Irvine, Irvine, CA 92697, USA
| | - Yongjun Liu
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA
| | - Wenbin Liao
- Baylx, Inc., 1 Technology Dr, C511, Irvine, CA 92618, USA.
| | - Weian Zhao
- Sue and Bill Gross Stem Cell Research Center, 845 Health Sciences Road, University of California-Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, CA 92697, USA; Chao Family Comprehensive Cancer Center, University of California-Irvine, Irvine, CA 92697, USA; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA 92697, USA; Departments of Biomedical Engineering and Biological Chemistry, University of California-Irvine, Irvine, CA 92697, USA.
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10
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Schostek S, Zimmermann M, Keller J, Fode M, Melbert M, Prosst RL, Gottwald T, Schurr MO. Pre-clinical study on a telemetric gastric sensor for recognition of acute upper gastrointestinal bleeding: the "HemoPill monitor". Surg Endosc 2020; 34:888-98. [PMID: 31139988 DOI: 10.1007/s00464-019-06845-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 05/16/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Acute upper gastrointestinal bleeding is a life-threatening medical condition with a relevant risk of re-bleeding even after initial endoscopic hemostasis. The implantable HemoPill monitor contains a novel telemetric sensor to optically detect blood in the stomach allowing the surveillance of high-risk patients for re-bleedings. METHODS In this pre-clinical porcine study, bleeding has been simulated by injecting porcine blood into the stomach of a pig through an implanted catheter using a syringe pump. The effect of the sensor position in the stomach, the gastric food content, and the bleeding intensity was investigated. RESULTS Sensitivity and specificity of the sensor reached more than 87.5% when the sensor was positioned close to the source of bleeding. Solid food had a higher negative impact on sensitivity than liquid food but a positive impact on specificity. A heavy bleeding was more likely to be detected by the sensor but was also associated with a lower likelihood for true-negative results than weaker bleedings. CONCLUSIONS The study clearly demonstrated the capability of the HemoPill sensor prototype to detect clinically relevant bleedings with high sensitivity and specificity (> 80%) when the sensor was positioned close to the bleeding site. The sensors proved to be robust against artefact effects from stomach content. These are favorable findings that underline the potential benefit for the use of the HemoPill sensor in monitoring patients with a risk of re-bleeding in the upper gastrointestinal tract.
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Maurizi A, Capulli M, Patel R, Curle A, Rucci N, Teti A. RNA interference therapy for autosomal dominant osteopetrosis type 2. Towards the preclinical development. Bone 2018; 110:343-354. [PMID: 29501587 DOI: 10.1016/j.bone.2018.02.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 02/12/2018] [Accepted: 02/27/2018] [Indexed: 12/18/2022]
Abstract
Autosomal Dominant Osteopetrosis type 2 (ADO2) is a rare bone disease characterized by dense and brittle bones due to impairment of osteoclast bone resorption. Dominant negative mutations of the CLCN7 gene affect about 70% of ADO2 patients. ADO2 has no cure and our recent work established that it is suitable for gene silencing by a specific small interfering RNA that does not affect the normal mRNA, thus inducing a condition of pseudo-haplosufficiency and rescuing the bone phenotype. We performed a systematic study to test the likelihood that the therapy could progress towards clinical trials, treating Clcn7G213R/WT ADO2 mice with Clcn7G213R-specific siRNA and investigating the bone phenotype by μCT and histomorphometry, and safety, by histopathology and serology. We demonstrated that our Clcn7G213R siRNA is not only effective in pre-pubertal ADO2 male mice as we showed in our previous study, but also in adult and ageing mice, in males and females, by intraperitoneal and subcutaneous administration. Furthermore, the study also showed safety following prolonged chronic administration and allowed us to identify specific end-points to be potentially used in clinical trials. These results may pave the way towards regulatory toxicity studies, through which the therapy, that is patent-protected, can obtain approval from public health authorities for the transition to the Phase I/II clinical trials. The study also suggests that similar strategies could be applied to other autosomal dominant bone diseases, opening an avenue for a wider use of the RNA interference therapy in rare genetic disorders.
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Affiliation(s)
- Antonio Maurizi
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy
| | - Mattia Capulli
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy
| | - Rajvi Patel
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy
| | - Annabel Curle
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy
| | - Nadia Rucci
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy
| | - Anna Teti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio - Coppito 2, 67100 L'Aquila, Italy.
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12
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Maschmeyer P, Petkau G, Siracusa F, Zimmermann J, Zügel F, Kühl AA, Lehmann K, Schimmelpfennig S, Weber M, Haftmann C, Riedel R, Bardua M, Heinz GA, Tran CL, Hoyer BF, Hiepe F, Herzog S, Wittmann J, Rajewsky N, Melchers FG, Chang HD, Radbruch A, Mashreghi MF. Selective targeting of pro-inflammatory Th1 cells by microRNA-148a-specific antagomirs in vivo. J Autoimmun 2017; 89:41-52. [PMID: 29183643 PMCID: PMC5916452 DOI: 10.1016/j.jaut.2017.11.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 12/02/2022]
Abstract
In T lymphocytes, expression of miR-148a is induced by T-bet and Twist1, and is specific for pro-inflammatory Th1 cells. In these cells, miR-148a inhibits the expression of the pro-apoptotic protein Bim and promotes their survival. Here we use sequence-specific cholesterol-modified oligonucleotides against miR-148a (antagomir-148a) for the selective elimination of pro-inflammatory Th1 cells in vivo. In the murine model of transfer colitis, antagomir-148a treatment reduced the number of pro-inflammatory Th1 cells in the colon of colitic mice by 50% and inhibited miR-148a expression by 71% in the remaining Th1 cells. Expression of Bim protein in colonic Th1 cells was increased. Antagomir-148a-mediated reduction of Th1 cells resulted in a significant amelioration of colitis. The effect of antagomir-148a was selective for chronic inflammation. Antigen-specific memory Th cells that were generated by an acute immune reaction to nitrophenylacetyl-coupled chicken gamma globulin (NP-CGG) were not affected by treatment with antagomir-148a, both during the effector and the memory phase. In addition, antibody titers to NP-CGG were not altered. Thus, antagomir-148a might qualify as an effective drug to selectively deplete pro-inflammatory Th1 cells of chronic inflammation without affecting the protective immunological memory. Th1 cells expressing miR-148a mediate colitis in a murine model of IBD. Antagomir-148a inhibits colitis by selectively depleting Th1 cells from the colon. Antagomir-148a does not affect the protective immunological memory.
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Affiliation(s)
| | - Georg Petkau
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | | | | | | | - Anja Andrea Kühl
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Campus Benjamin Franklin, Berlin, Germany
| | - Katrin Lehmann
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | | | - Melanie Weber
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | | | - René Riedel
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | - Markus Bardua
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | | | - Cam Loan Tran
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany
| | - Bimba Franziska Hoyer
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany; Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Campus Benjamin Franklin, Berlin, Germany
| | - Falk Hiepe
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Germany; Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Campus Benjamin Franklin, Berlin, Germany
| | - Sebastian Herzog
- Division of Developmental Immunology, BIOCENTER, Medical University Innsbruck, Innsbruck, Austria
| | - Jürgen Wittmann
- Division of Molecular Immunology, Department of Internal Medicine III, Nikolaus-Fiebiger-Center, University of Erlangen-Nürnberg, Erlangen, Germany
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Ebrahimi M, Botelho MG, Dorozhkin SV. Biphasic calcium phosphates bioceramics (HA/TCP): Concept, physicochemical properties and the impact of standardization of study protocols in biomaterials research. Mater Sci Eng C Mater Biol Appl 2017; 71:1293-312. [PMID: 27987685 DOI: 10.1016/j.msec.2016.11.039] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 11/06/2016] [Accepted: 11/10/2016] [Indexed: 01/14/2023]
Abstract
Biphasic calcium phosphates (BCP) bioceramics have become the materials of choice in various orthopedic and maxillofacial bone repair procedures. One of their main advantages is their biodegradation rate that can be modified by changing the proportional ratio of the composition phases. For enhanced bone tissue regeneration, the bioactivity of BCP should be increased by optimizing their physicochemical properties. To date, the ideal physicochemical properties of BCP for bone applications have not been defined. This is mostly related to lack of standard study protocols in biomaterial science especially with regards to their characterizations and clinical applications. In this paper we provided a review on BCP and their physicochemical properties relevant to clinical applications. In addition, we summarized the available literature on their use in animal models and evaluated the influences of different composition ratios on bone healing. Controversies in literature with regards to ideal composition ratio of BCP have also been discussed in detail. We illustrated the discrepancies in study protocols among researchers in animal studies and emphasized the need to develop and follow a set of generally accepted standardized guidelines. Finally; we provided general recommendations for future pre-clinical studies that allow better standardization of study protocols. This will allow better comparison and contrast of newly developed bone substitute biomaterials that help further progress in the field of biomaterial science.
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