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Gene And Cell Delivery For Intervertebral Disc Degeneration
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Book Synopsis Gene and Cell Delivery for Intervertebral Disc Degeneration by : Raquel Madeira Gonçalves
Download or read book Gene and Cell Delivery for Intervertebral Disc Degeneration written by Raquel Madeira Gonçalves and published by CRC Press. This book was released on 2018-04-27 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intervertebral disc degeneration is one of the major causes of lower back pain for which the common therapeutic interventions are not efficient. A search for alternative therapies for lower back pain and intervertebral disc degeneration includes cell-based therapies. Unfortunately, intervertebral disc degeneration is avascular and thus a hostile environment for cell survival. Furthermore, cellular characterization in intervertebral disc degeneration, and particularly in the nucleus pulposus, is controversial, mainly due to lack of specific markers and species variability. This book adds to the knowledge on cellular and molecular therapies for intervertebral disc degeneration and associated lower back pain. Key Selling Features: Describes the ontogeny and phenotype of intervertebral disc cells Reviews the role that inflammation plays in disco-genic pain Highlights the types of cells that might be used as sources for treating degenerating intervertebral discs Summarizes current alternative therapies Explores methods for cell delivery into degenerated intervertebral discs
Book Synopsis Cells and Biomaterials for Intervertebral Disc Regeneration by : Sibylle Grad
Download or read book Cells and Biomaterials for Intervertebral Disc Regeneration written by Sibylle Grad and published by Springer Nature. This book was released on 2022-06-01 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disorders related to the intervertebral disc (IVD) are common causes of morbidity and of severe life quality deterioration. IVD degeneration, although in many cases asymptomatic, is often the origin of painful neck and back diseases. In Western societies IVD related pain and disability account for enormous health care costs as a result of work absenteeism and thus lost production, disability benefits, medical and insurance expenses. Although only a small percentage of patients with disc disorders finally will undergo surgery, spinal surgery has been one of the fastest growing disciplines in the musculoskeletal field in recent years. Nevertheless, current treatment options are still a matter of controversial discussion. In particular, they hardly can restore normal spine biomechanics and prevent degeneration of adjacent tissues. While degeneration affects all areas of the IVD, the most constant and noticeable changes occur in the gel-like central part, the nucleus pulposus (NP). Recent emphasis has therefore been put in biological ways to regenerate the NP; however, there are a number of obstacles to overcome, considering the exceptional biological and biomechanical environment of this tissue. Different biological approaches such as molecular, gene, and cell based therapies have been investigated and have shown promising results in both in vitro and in vivo studies. Nonetheless, considerable hurdles still exist in their application for IVD regeneration in human patients. The choice of the cells and the choice of the cell carrier suitable for implantation pose major challenges for research and development activities. This lecture recapitulates the basics of IVD structure, function, and degeneration mechanisms. The first part reviews the recent progress in the field of disc and stem cell based regenerative approaches. In the second part, most appropriate biomaterials that have been evaluated as cell or molecule carrier to cope with degenerative disc disease are outlined. The potential and limitations of cell- and biomaterial-based treatment strategies and perspectives for future clinical applications are discussed. Table of Contents: Cell Therapy for Nucleus Pulposus Regeneration / Recent Advances in Biomaterial Based Tissue Engineering for Intervertebral Disc Regeneration
Book Synopsis Cells and Biomaterials for Intervertebral Disc Regeneration by : Sibylle Grad
Download or read book Cells and Biomaterials for Intervertebral Disc Regeneration written by Sibylle Grad and published by Morgan & Claypool Publishers. This book was released on 2010 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disorders related to the intervertebral disc (IVD) are common causes of morbidity and of severe life quality deterioration. IVD degeneration, although in many cases asymptomatic, is often the origin of painful neck and back diseases. In Western societies IVD related pain and disability account for enormous health care costs as a result of work absenteeism and thus lost production, disability benefits, medical and insurance expenses. Although only a small percentage of patients with disc disorders finally will undergo surgery, spinal surgery has been one of the fastest growing disciplines in the musculoskeletal field in recent years. Nevertheless, current treatment options are still a matter of controversial discussion. In particular, they hardly can restore normal spine biomechanics and prevent degeneration of adjacent tissues. While degeneration affects all areas of the IVD, the most constant and noticeable changes occur in the gel-like central part, the nucleus pulposus (NP). Recent emphasis has therefore been put in biological ways to regenerate the NP; however, there are a number of obstacles to overcome, considering the exceptional biological and biomechanical environment of this tissue. Different biological approaches such as molecular, gene, and cell based therapies have been investigated and have shown promising results in both in vitro and in vivo studies. Nonetheless, considerable hurdles still exist in their application for IVD regeneration in human patients. The choice of the cells and the choice of the cell carrier suitable for implantation pose major challenges for research and development activities. This lecture recapitulates the basics of IVD structure, function, and degeneration mechanisms. The first part reviews the recent progress in the field of disc and stem cell based regenerative approaches. In the second part, most appropriate biomaterials that have been evaluated as cell or molecule carrier to cope with degenerative disc disease are outlined. The potential and limitations of cell- and biomaterial-based treatment strategies and perspectives for future clinical applications are discussed. Table of Contents: Cell Therapy for Nucleus Pulposus Regeneration / Recent Advances in Biomaterial Based Tissue Engineering for Intervertebral Disc Regeneration
Book Synopsis Intervertebral Disc Regeneration Using Mesenchymal Stem Cells by : Fan Yang
Download or read book Intervertebral Disc Regeneration Using Mesenchymal Stem Cells written by Fan Yang and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Intervertebral Disc Regeneration Using Mesenchymal Stem Cells: a Mouse Model Study" by 楊帆, Fan, Yang, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled "Intervertebral disc regeneration using mesenchymal stem cells ─A mouse model study" Submitted by Fan Yang For the degree of Doctor of philosophy At the University of Hong Kong in August, 2007 Degenerative disc disease (DDD) is a common disease which affects millions of people. The causes of DDD include genetics, injury and smoking; however the underlying pathogenesis of this disease is still not very clear. Lack of the suitable animal models which can truly simulate human DDD is part of the difficulties to study the mechanism of disc degeneration. The biological therapies of DDD include protein therapy, gene therapy and cellular therapy. Compared with other traditional therapeutics, stem cell therapy is a potential regenerative method which could replace the dysfunctional disc cells and restore the function of the intervertebral discs. Some previous studies using large animals have shown that the autologous bone marrow derived mesenchymal stem cells (BMSC) could be beneficial to the degenerated disc. But the mechanism of this regeneration is still largely unknown. The scanty of molecular tools and markers hindered the research in this area. Therefore, the objective of this project is to investigate whether BMSC could be beneficial to the murine degenerative intervertebral discs. If the regenerative effect was obtained, the molecular mechanism of regeneration will be dissected using available molecular tools. In order to attain this purpose we firstly established a simple mouse tail model of DDD using a puncturing method. The caudal murine discs were punctured with 31G needle under the microscopic guidance. Disc height analysis and histology confirmed the induced degeneration was successful and progressive degenerative process was observed from 1 to 12 weeks after the puncture. The expression of Col2a1, aggrecan and Sox 9 of the whole disc decreased continuously; Col1a1 increased from 1 to 6 weeks and decreased at 12 weeks. All these data supported that this murine model had some similarities with human DDD and could be used for the evaluation of the effect of BMSC. In the next step we injected allogenic BMSC isolated from green fluorescent protein (GFP) mouse into the degenerated murine discs. The histology and the x-ray analysis showed that the injury induced degenerative process was delayed from 4 to 24 weeks after the injection of the BMSC. The expression of Col2a1, aggrecan and Sox9 increased in the regenerated disc. Type II collagen increased continuously in the regenerated nucleus pulposus. The number of GFP positive cells which express Col2a1 increased during this regeneration process, suggesting that the chondrocytic differentiation of BMSC was involved in this regeneration process. The increased expression of Col2a1 by differentiated stem cells contributes to the regeneration of the intervertebral disc. In conclusion, a simple mouse model of DDD was established to evaluate the therapeutic effect of BMSC. It was promising to observe that the progressive degeneration was delayed by the injected stem cells. The in vivo chondrocytic differentiation of the BMSC contributes to this structural restoration of the intervertebral discs. The results of this project provided further evidence that in vivo differentiation of the stem cells is an important aspect of the regenerative mechanisms. DOI: 10.5353/th_b3955697 Subjects: Interve
Book Synopsis Tissue Engineering For Degenerative Intervertebral Discs by : Jun Zou
Download or read book Tissue Engineering For Degenerative Intervertebral Discs written by Jun Zou and published by World Scientific. This book was released on 2019-03-08 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low back pain is a common disorder in the clinical treatment of the Department of Orthopedics. Lumbar intervertebral disc degeneration is a main reason for the chronic pain and the process is difficult to reverse. Traditional treatment methods include conservative treatment and surgical treatment. Although the clinical symptoms caused by intervertebral disc degeneration can be alleviated to a certain extent, these treatment methods do not solve the fundamental issues and they also produce corresponding complications. The rise of tissue engineering technology and its applications in different fields have brought new ideas for the treatment of intervertebral disc degeneration. This book discusses the fundamentals as well as more recent developments in stem cell therapy and tissue engineering technology and offers an alternative for treating degeneration of intervertebral discs.
Book Synopsis The Intervertebral Disc by : Irving M. Shapiro
Download or read book The Intervertebral Disc written by Irving M. Shapiro and published by Springer Science & Business Media. This book was released on 2013-09-02 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intervertebral disc is a complex structure that separates opposing vertebrae, permits a wide range of motion, and accommodates high biomechanical forces. Disc degeneration leads to a loss of function and is often associated with excruciating pain. Written by leading scientists and clinicians, the first part of the book provides a review of the basic biology of the disc in health and disease. The second part considers strategies to mitigate the effects of disc degeneration and discusses the possibility of engineering replacement tissues. The final section is devoted to approaches to model normal development and elucidate the pathogenesis of degenerative disc disease using animal, organ and cell culture techniques. The book bridges the gap between the basic and clinical sciences; the target audience includes basic scientists, orthopaedists and neurologists, while at the same time appealing to the needs of graduate students, medical students, interns and fellows.
Book Synopsis Potential Gene Therapy for Intervertebral Disc Degeneration by : Kotaro Nishida
Download or read book Potential Gene Therapy for Intervertebral Disc Degeneration written by Kotaro Nishida and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Potential Gene Therapy for Intervertebral Disc Degeneration.
Book Synopsis Finding What Works in Health Care by : Institute of Medicine
Download or read book Finding What Works in Health Care written by Institute of Medicine and published by National Academies Press. This book was released on 2011-07-20 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Healthcare decision makers in search of reliable information that compares health interventions increasingly turn to systematic reviews for the best summary of the evidence. Systematic reviews identify, select, assess, and synthesize the findings of similar but separate studies, and can help clarify what is known and not known about the potential benefits and harms of drugs, devices, and other healthcare services. Systematic reviews can be helpful for clinicians who want to integrate research findings into their daily practices, for patients to make well-informed choices about their own care, for professional medical societies and other organizations that develop clinical practice guidelines. Too often systematic reviews are of uncertain or poor quality. There are no universally accepted standards for developing systematic reviews leading to variability in how conflicts of interest and biases are handled, how evidence is appraised, and the overall scientific rigor of the process. In Finding What Works in Health Care the Institute of Medicine (IOM) recommends 21 standards for developing high-quality systematic reviews of comparative effectiveness research. The standards address the entire systematic review process from the initial steps of formulating the topic and building the review team to producing a detailed final report that synthesizes what the evidence shows and where knowledge gaps remain. Finding What Works in Health Care also proposes a framework for improving the quality of the science underpinning systematic reviews. This book will serve as a vital resource for both sponsors and producers of systematic reviews of comparative effectiveness research.
Book Synopsis Intervertebral Disc Regeneration by : Benjamin Gantenbein
Download or read book Intervertebral Disc Regeneration written by Benjamin Gantenbein and published by Mdpi AG. This book was released on 2022-01-11 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a brief snapshot of recent research on the subject of intervertebral disc degeneration and how this specific organ could be regenerated. It provides stimuli to the reader in representing research from different angles in this cross-disciplinary field of spine surgeons, mechanical engineers and biologists. In particular, it is instructive as to how disc herniations could be successfully induced in vitro and, also, to how novel cell-based therapies using rare autochthonous stem cells could potentially be used in the future.
Book Synopsis Gene Therapy Applications by : Chunsheng Kang
Download or read book Gene Therapy Applications written by Chunsheng Kang and published by IntechOpen. This book was released on 2011-08-23 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of our book is to provide a detailed discussion of gene therapy application in human diseases. The book brings together major approaches: (1) Gene therapy in blood and vascular system, (2) Gene therapy in orthopedics, (3) Gene therapy in genitourinary system, (4) Gene therapy in other diseases. This source will make clinicians and researchers comfortable with the potential and problems of gene therapy application.
Book Synopsis Application of Innovative Techniques in Genetic and Cellular Therapies by : Yuan Xiong
Download or read book Application of Innovative Techniques in Genetic and Cellular Therapies written by Yuan Xiong and published by Frontiers Media SA. This book was released on 2023-12-27 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tightly linked to tissue engineering and regenerative medicine, genetic and cellular therapies have drawn universal attention. Since genetic sequencing is critical for precision medicine, the combination of bioinformatics and therapies is important to conduct prescriptive and predictive analytics based on genetic sequencing data. Bioinformatics and computational approaches have been widely considered for the development of genetic and cellular therapies. Therefore, the current research topic aims to cover recent advances in studies such as functional genomics, proteomics, metabolomics, and bioinformatics that bring in new perspectives on genetic therapies. The central goal of regenerative medicine is to replace damaged or diseased tissue with cells that are integrated and functioning optimally. Stem cell-based therapy is restricted by the limited availability of cell sources, the excessive cost, and the anticipated difficulties of clinical translation and ethical approval. Some promising alternatives are to incite the patient's innate ability of tissue repairs such as in situ tissue regeneration, which has the potential to provide new therapeutic options for tissue engineering and regenerative medicine. These innovative cellular therapies are also contained in our research topic.
Book Synopsis Mesenchymal Stem Cells by : Phuc Van Pham
Download or read book Mesenchymal Stem Cells written by Phuc Van Pham and published by BoD – Books on Demand. This book was released on 2017-11-29 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mesenchymal Stem Cells: Isolation, Characterization, and Applications thoroughly presents the isolation, characterization, and some applications of mesenchymal stem cells in the clinic. The book has two parts: "Isolation and Characterization" and "Clinical Perspectives and Applications." In Part I, the subsequent chapters introduce some techniques in isolation, characterization, and purification of mesenchymal stem cells in different tissues. In Part II, some applications of mesenchymal stem cells in the popular diseases, which include cartilage regeneration, spinal cord injury, and osteoarthritis, are discussed. This book provides a succinct yet comprehensive overview of mesenchymal stem cells for advanced students, graduate students, and researchers.
Book Synopsis Fundamentals of Drug Delivery by : Heather A. E. Benson
Download or read book Fundamentals of Drug Delivery written by Heather A. E. Benson and published by John Wiley & Sons. This book was released on 2021-10-12 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to the current research, major challenges, and future prospects of controlled drug delivery systems Controlled drug delivery has the potential to significantly improve therapeutic outcomes, increase clinical benefits, and enhance the safety of drugs in a wide range of diseases and health conditions. Fundamentals of Drug Delivery provides comprehensive and up-to-date coverage of the essential principles and processes of modern controlled drug delivery systems. Featuring contributions by respected researchers, clinicians, and pharmaceutical industry professionals, this edited volume reviews the latest research in the field and addresses the many issues central to the development of effective, controlled drug delivery. Divided in three parts, the book begins by introducing the concept of drug delivery and discussing both challenges and opportunities within the rapidly evolving field. The second section presents an in-depth critique of the common administration routes for controlled drug delivery, including delivery through skin, the lungs, and via ocular, nasal, and otic routes. The concluding section summarizes the current state of the field and examines specific issues in drug delivery and advanced delivery technologies, such as the use of nanotechnology in dermal drug delivery and advanced drug delivery systems for biologics. This authoritative resource: Covers each main stage of the drug development process, including selecting pharmaceutical candidates and evaluating their physicochemical characteristics Describes the role and application of mathematical modelling and the influence of drug transporters in pharmacokinetics and drug disposition Details the physiology and barriers to drug delivery for each administration route Presents a historical perspective and a look into the possible future of advanced drug delivery systems Explores nanotechnology and cell-mediated drug delivery, including applications for targeted delivery and toxicological and safety issues Includes comprehensive references and links to the primary literature Edited by a team of of internationally-recognized experts, Fundamentals of Drug Delivery is essential reading for researchers, industrial scientists, and advanced students in all areas of drug delivery including pharmaceutics, pharmaceutical sciences, biomedical engineering, polymer and materials science, and chemical and biochemical engineering.
Book Synopsis Potential of Bone Marrow and Umbilical Cord Derived Mesenchymal Stem Cells in Intervertebral Disc Repair by : Fengjuan Lu
Download or read book Potential of Bone Marrow and Umbilical Cord Derived Mesenchymal Stem Cells in Intervertebral Disc Repair written by Fengjuan Lu and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Potential of Bone Marrow and Umbilical Cord Derived Mesenchymal Stem Cells in Intervertebral Disc Repair" by Fengjuan, Lu, 吕凤娟, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Introduction: Intervertebral disc (IVD) degeneration is suggested to begin from the nucleus pulposus (NP). Evidence from various studies highlights mesenchymal stem cells (MSC), in most cases using bone marrow derived MSC, as a potential stem cell source for NP regeneration. However MSC can be isolated from many sources with various characteristics. There are indications that fetal or close to fetal tissue sources contain MSC with relatively undifferentiated phenotype with respect to MSC from adult sources. Moreover, umbilical cord (C)-MSC may have better chondrogenic differentiation potential than bone marrow (B)-MSC. We hypothesize CMSC are different from BMSC, and more efficient than BMSC in stimulating NP regeneration. Methods: MSC were isolated from human bone marrow and umbilical cord with corresponding ethical approval. BMSC and CMSC were characterized for cell surface marker expression profile and differentiation potential.. RT-PCR of interest genes in NP cells isolated from scoliosis and degenerate discs was performed to search for NP degeneration indicators. Conditioned media (CM) was collected from confluent MSC monolayer, and used for stimulation of four batches of degenerated NP cells isolated from human degenerative intervertebral discs. Cell proliferation and cytotoxicity were assessed by MTT assay. Proteoglycan content were measured by DMMB assay. Gene expression of a series of degeneration related molecules including ACAN, SOX9, CDH2, CD55, KRT19, KRT18, FBLN1 and MGP, and fibrosis related molecules, including MMP12, HSP47, COL1A1, COL3A1 and FN1, of NP cells in MSC-CM were determined by real- time RT-PCR. All results were normalized to the control cells in basal medium. The expression of discogenic, chondrogenic and osteogenic markers on BMSC and CMSC were compared by RT-PCR. Results and Conclusion: CMSC were similar to BMSC and fulfilled the minimum criteria of MSC, however the expression of CD146, CD106 and Stro-1 was different, and BMSC had a spontaneous osteogenesis tendency while CMSC expressed chondrogenic marker even without TGF-beta stimulation. BMSC demonstrated a paracrine effect on modulating human degenerated NP cells towards a non-degenerative phenotype in stimulating cell proliferation, slightly enhancing proteoglycan production, upregulating KRT19 while downregulating MMP12. Compared with BMSC, a higher paracrine effect of CMSC was disclosed in modulating the phenotype of NP cells in all aspects tested, and an intrinsic higher expression on CMSC of 'potential NP markers', including KRT19, KRT18 and CD55, but lower expression of osteogenic markers, including RUNX2 and ALPL, was revealed, which indicate a higher potential of CMSC for future clinical application to treat IVD degeneration diseases. KRT19 and MMP12 were also confirmed to be the highest differentially expressed candidate genes between cultured scoliosis and degenerated human NP cells, indicating a high indicator potential of NP degeneration. Furthermore, a subpopulation was detected in the degenerated NP cells that possessed macrophage-like phenotype and activities, which may play a role in the pathogenesis of
Book Synopsis Small Molecule-based Treatment Approaches for Intervertebral Disc Degeneration: Current Options and Future Directions by : Amir Kamali
Download or read book Small Molecule-based Treatment Approaches for Intervertebral Disc Degeneration: Current Options and Future Directions written by Amir Kamali and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Low back pain (LBP) is a major reason for disability, and symptomatic intervertebral disc (IVD) degeneration (IDD) contributes to roughly 40% of all LBP cases. Current treatment modalities for IDD include conservative and surgical strategies. Unfortunately, there is a significant number of patients in which conventional therapies fail with the result that these patients remain suffering from chronic pain and disability. Furthermore, none of the current therapies successfully address the underlying biological problem - the symptomatic degenerated disc. Both spinal fusion as well as total disc replacement devices reduce spinal motion and are associated with adjacent segment disease. Thus, there is an unmet need for novel and stage-adjusted therapies to combat IDD. Several new treatment options aiming to regenerate the IVD are currently under investigation. The most common approaches include tissue engineering, growth factor therapy, gene therapy, and cell-based treatments according to the stage of degeneration. Recently, the regenerative activity of small molecules (low molecular weight organic compounds with less than 900 daltons) on IDD was demonstrated. However, small molecule-based therapy in IDD is still in its infancy due to limited knowledge about the mechanisms that control different cell signaling pathways of IVD homeostasis. Small molecules can act as anti-inflammatory, anti-apoptotic, anti-oxidative, and anabolic agents, which can prevent further degeneration of disc cells and enhance their regeneration. This review pursues to give a comprehensive overview of small molecules, focusing on low molecular weight organic compounds, and their potential utilization in patients with IDD based on recent in vitro, in vivo, and pre-clinical studies
Book Synopsis Identification and Characterization of Stem Cell-Like Populations in Primate Intervertebral Disc by : Shishu Huang
Download or read book Identification and Characterization of Stem Cell-Like Populations in Primate Intervertebral Disc written by Shishu Huang and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Identification and Characterization of Stem Cell-like Populations in Primate Intervertebral Disc" by Shishu, Huang, 黄石书, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Upon aging, the intervertebral disc (IVD) inevitably undergoes degeneration characterized by biochemical and morphologic changes. IVD degeneration can lead to multiple clinical disorders such as back and neck pain, and myelopathy. Low back pain can disable up to 85% of the adult population and results in a significant restriction of social activities and inability to work. Such disorder incurs billions of dollars in medical expenditures each year. Despite advances in the detection and treatment of the degeneration, the regeneration of the IVD remains low because current therapies are limited by exogenous curing approaches. New strategies for the reversal of IVD degeneration, including gene, cytokine, and stem cell therapies that can influence the anabolic and catabolic pathways in disc cells have been under investigation. These therapies aim to rejuvenate or replace diminished nucleus pulposus cells in the degenerative IVD. Recent reports have put forth a proposal of "endogenous disc stem cells," suggesting that cells derived from the degenerative IVD tissue possess stem cell properties. These putative stem cells are believed to regulate the development and homeostasis of the IVD tissue. In this study, we identified and characterized a stem cell population from the IVD of healthy Rhesus monkey, termed disc stem/progenitor cells (DSCs). We show that the DSCs possess clonogenicity, multipotency and self-renewal capacity. The DSCs are phenotypically similar to bone marrow mesenchymal stem cells (BMSCs) but they are not identical. The DSCs show a faster growth rate under hypoxia than normoxia. DSCs derived from nucleus pulposus (DSCNP) show a stable expression level of hypoxia inducible factor-1 alpha (Hif-1ａ) in response to hypoxia. DSCs derived from annulus fibrosus (DSCAF) are more resistant to apoptosis under hypoxia than DSCNP. More importantly, small leucine-rich proteoglycans (SLRPs) are identified as important DSC niche components. We show that biglycan (bgn) and decorin (dcn) reduce the susceptibility of DSCs to hypoxia-induced apoptosis by promoting the expression of hypoxia inducible factors (HIFs). Our findings suggest that DSCs rely on the unique niche components for survival. In summary, our findings propose the existence of endogenous stem cells in IVD. Further study of the DSCs may provide new insights into the biology of IVD and facilitate the design of new strategies to treat disc degeneration in future. DOI: 10.5353/th_b4786959 Subjects: Stem cells Intervertebral disk Primates as laboratory animals
Book Synopsis Biological Approaches to Spinal Disc Repair and Regeneration for Clinicians by : Roger Härtl
Download or read book Biological Approaches to Spinal Disc Repair and Regeneration for Clinicians written by Roger Härtl and published by Thieme Medical Publishers. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human spinal disc : relevant anatomy and physiology / Julien Tremblay-Gravel, Fahad H. Abduljabbar, Jean Ouellet, and Lisbet Haglund -- Pathophysiology of disc disease : disc degeneration / Niloofar Farhang, Joshua Stover, Brandon Lawrence, and Robby D. Bowles -- Imaging of the healthy and diseased spinal disc / Darryl B. Sneag and Hollis G. Potter -- Biomechanics of the healthy and diseased spine / Hans-Joachim Wilke and Fabio Galbusera -- Differences between human and animal discs : pros and cons of current animal models for pre-clinical development of biologic therapies for low back pain / Jeffrey C. Lotz -- Grading scales for disc degeneration and regeneration : clinical and experimental / Peter Grunert -- Disc regeneration : in vitro approaches and experimental results / John T. Martin, Harvey E. Smith, Lachlan J. Smith, and Robert L. Mauck -- Intervertebral disc whole organ cultures / Marianna Peroglio, Zhen Li, Lorin Michael Benneker, Mauro Alini, and Sibylle Grad -- Biological treatment approaches : basic ideas and principles / Victor Y. Leung and Kenneth M. Cheung -- Learning from successes of tissue engineered strategies in non-spine cartilaginous disorders / Stephen Sloan and Lawrence J. Bonassar -- Treatment and of degenerative disc disease and disc regeneration : proteins and genes / Daisuke Sakai and Jordy Schol -- Treatment of degenerated disc disease/disc regeneration : growth factors and platelet-rich plasma / Koichi Masuda and Kenji Kato -- Treatment of degenerated disc disease/disc regeneration : stem cells, chondrocytes or other cells, and tissue engineering / Steven Presciutti and Howard An -- Nucleus replacement and repair : autologous disc chondrocyte transplantation / Christian Hohaus, Timothy Ganey, and Hans Jörg Meisel -- Annulus fibrosus repair / Olivia M. Torre, Michelle A. Cruz, Andrew C. Hecht, and James C. Iatridis -- Summary of clinical trials with biological treatment approaches for spinal disease / Gernot Lang, Ibrahim Hussain, Micaella Zubkov, Yu Moriguchi, Brenton Pennicooke, and Roger Härtl -- Total disc transplantation : current results and future development / Jason Pui Yin Cheung, Dike Ruan, and Keith D.K. Luk -- What have we learned from mechanical total disc replacement? / Timothy T. Roberts, Colin M. Haines, and Edward C. Benzel -- Regulatory overview : obtaining regulatory approval of a biologic/cell product / Michaela H. Purcell, Penny J. White, H. Davis Adkisson -- What makes biological treatment strategies and tissue engineering for ddd interesting to industry? / Hassan Serhan, Elliott A. Gruskin, and William C. Horton -- What will the future bring? : perspectives from around the world / Tony Goldschlager, Claudius Thome, Howard An, and Luiz Vialle
