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Dey DK, Sharma C, Vadlamudi Y, Kang SC. CopA3 peptide inhibits MDM2-p53 complex stability in colorectal cancers and activates p53 mediated cell death machinery. Life Sci 2023; 318:121476. [PMID: 36758667 DOI: 10.1016/j.lfs.2023.121476] [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: 11/22/2022] [Revised: 01/23/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
The diverse expression patterns of the tumor suppressor p53 in cancer cells reflect the regulatory efficiency of multiple cellular pathways. By contrast, many human tumors are reported to develop in the presence of wild-type p53. Recently, several oncogene inhibitors have been used clinically to suppress tumor development by functionally reactivating other oncoproteins. On the other hand, p53 reactivation therapies have not been well established, as few of the p53-MDM2 complex inhibitors such as Nutlin-3 induces mutation in p53 gene upon prolonged usage. Therefore, in this study CopA3, a 9-mer dimeric D-type peptide with anticancer activity against the human colorectal cancer cells, was used to explore the efficacy of p53 reactivation in-vitro and in-vivo. The anticancer activity of CopA3 was more selective towards the wild-type p53 expressing cells than the p53 deficient or mutant colorectal cancer cells. In response to this, this study investigated the signaling pathway in vitro and validated its anti-tumor activity in-vivo. The protein-peptide interaction and molecular docking efficiently provided insight into the specific binding affinity of CopA3 to the p53-binding pocket of the MDM2 protein, which efficiently blocked the p53 and MDM2 interaction. CopA3 plays a crucial role in the binding with MDM2 and enhanced the nuclear translocation of the p53 protein, which sequentially activated the downstream targets to trigger the autophagic mediated cell death machinery through the JNK/Beclin-1 mediated pathway. Collectively, CopA3 affected the MDM2-p53 interaction, which suppressed tumor development. This study may provide a novel inhibitor candidate for the MDM2-p53 complex, which could ultimately suppress the growth of colorectal cancer cells without being cytotoxic to the healthy neighboring cells present around the tumor microenvironment.
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Affiliation(s)
- Debasish Kumar Dey
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Chanchal Sharma
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Yellamandayya Vadlamudi
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
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Zhou S, Li Y, Zhang Z, Yuan Y. An insight into the TAM system in Alzheimer's disease. Int Immunopharmacol 2023; 116:109791. [PMID: 36738678 DOI: 10.1016/j.intimp.2023.109791] [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: 12/02/2022] [Revised: 01/13/2023] [Accepted: 01/24/2023] [Indexed: 02/05/2023]
Abstract
The TAM receptors may help delay the progression of Alzheimer's disease (AD). AD is the most common neurodegenerative disease associated with human aging. The TAM receptors, derived from the first letter of its three constituents -Tyro3, Axl, and Mertk, are associated with immune responses, cellular differentiation and migration, and clearance of apoptotic cells and debris, with the two canonical ligands, Growth Arrest Specific 6 (Gas6) and ProS1. Several kinds of research have indicated the participation of the TAM system in AD pathology. Also, the TAMs regulate multiple features of microglia, the significant sensors of disorder in the central nervous system (CNS). In this review, we describe the biology of the TAM receptors and ligands in the CNS. Then, we discuss the relationship between the TAM system and AD, specially focusing on its functional expression in the microglia. Finally, we also summarize some agents that could interfere with the TAM signaling pathways and discuss potential difficulties and strategies for drug development.
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Affiliation(s)
- Shiqi Zhou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Yanyan Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Zhao Zhang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Yuhe Yuan
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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53
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Poulis N, Breitenstein P, Hofstede S, Hoerstrup SP, Emmert MY, Fioretta ES. Multiscale analysis of human tissue engineered matrices for next generation heart valve applications. Acta Biomater 2023; 158:101-114. [PMID: 36638939 DOI: 10.1016/j.actbio.2023.01.007] [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: 08/02/2022] [Revised: 12/15/2022] [Accepted: 01/03/2023] [Indexed: 01/12/2023]
Abstract
Human tissue-engineered matrices (hTEMs) have been proposed as a promising approach for in situ tissue engineered heart valves (TEHVs). However, there is still a limited understanding on how ECM composition in hTEMs develops over tissue culture time. Therefore, we performed a longitudinal hTEM assessment by 1) multiscale evaluation of hTEM composition during culture time (2, 4, 6-weeks), using (immuno)histology, biochemical assays, and mass spectrometry (LC-MS/MS); 2) analysis of protein pathways involved in ECM development using gene set enrichment analysis (GSEA); and 3) assessment of hTEM mechanical characterization using uniaxial tensile testing. Finally, as a proof-of-concept, TEHVs manufactured using 6-weeks hTEM samples were tested in a pulse duplicator. LC-MS/MS confirmed the tissue culture time-dependent increase in ECM proteins observed in histology and biochemical assays, revealing the most abundant collagens (COL6, COL12), proteoglycans (HSPG2, VCAN), and glycoproteins (FN, TNC). GSEA identified the most represented protein pathways in the hTEM at 2-weeks (mRNA metabolic processes), 4-weeks (ECM production), and 6-weeks (ECM organization and maturation). Uniaxial mechanical testing showed increased stiffness and stress at failure, and reduction in strain over tissue culture time. hTEM-based TEHVs demonstrated promising in vitro performance at both pulmonary and aortic pressure conditions, with symmetric leaflet coaptation and no stenosis. In conclusion, ECM protein abundance and maturation increased over tissue culture time, with consequent improvement of hTEM mechanical characteristics. These findings suggest that longer tissue culture impacts tissue organization, leading to an hTEM that may be suitable for high-pressure applications. STATEMENT OF SIGNIFICANCE: It is believed that the composition of the extracellular matrix (ECM) in the human tissue engineered matrices (hTEM) may favor tissue engineered heart valve (TEHV) remodeling upon implantation. However, the exact protein composition of the hTEM, and how this impacts tissue mechanical properties, remains unclear. Hence, we developed a reproducible rotation-based tissue culture method to produce hTEM samples. We performed a longitudinal assessment using different analytical techniques and mass spectrometry. Our data provided an in-depth characterization of the hTEM proteome with focus on ECM components, their development, and how they may impact the mechanical properties. Based on these results, we manufactured functional hTEM-based TEHVs at aortic-like condition in vitro. These outcomes pose an important step in translating hTEM-based TEHVs into clinics and in predicting their remodeling potential upon implantation.
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Affiliation(s)
- N Poulis
- Institute for Regenerative Medicine (IREM), University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - P Breitenstein
- Institute for Regenerative Medicine (IREM), University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
| | - S Hofstede
- Laboratory for Orthopaedic Biomechanics, Institute for Biomechanics, ETH Zurich, Lengghalde 5, 8008 Zurich, Switzerland
| | - S P Hoerstrup
- Institute for Regenerative Medicine (IREM), University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Wyss Zurich, University and ETH Zurich, Zurich, Switzerland
| | - M Y Emmert
- Institute for Regenerative Medicine (IREM), University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Wyss Zurich, University and ETH Zurich, Zurich, Switzerland; Charité Universitätsmedizin Berlin, Berlin, Germany; Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charite (DHZC), Berlin, Germany.
| | - E S Fioretta
- Institute for Regenerative Medicine (IREM), University of Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland
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Wang X, Ma Y, Chen J, Liu Y, Liu G, Wang P, Wang B, Taketo MM, Bellido T, Tu X. A novel decellularized matrix of Wnt signaling-activated osteocytes accelerates the repair of critical-sized parietal bone defects with osteoclastogenesis, angiogenesis, and neurogenesis. Bioact Mater 2023; 21:110-128. [PMID: 36093329 PMCID: PMC9411072 DOI: 10.1016/j.bioactmat.2022.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/21/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022] Open
Abstract
Cell source is the key to decellularized matrix (DM) strategy. This study compared 3 cell types, osteocytes with/without dominant active Wnt/β-catenin signaling (daCO and WTO) and bone marrow stromal cells (BMSCs) for their DMs in bone repair. Decellularization removes all organelles and >95% DNA, and retained >74% collagen and >71% GAG, maintains the integrity of cell basement membrane with dense boundaries showing oval and honeycomb structure in osteocytic DM and smooth but irregular shape in the BMSC-DM. DM produced higher cell survival rate (90%) and higher proliferative activity. In vitro, daCO-DM induces more and longer stress fibers in BMSCs, conducive to cell adhesion, spreading, and osteogenic differentiation. 8-wk after implantation of the critical-sized parietal bone defect model, daCO-DM formed tight structures, composed of a large number of densely-arranged type-I collagen under polarized light microscope, which is similar to and integrated with host bone. BV/TV (>54%) was 1.5, 2.9, and 3.5 times of WTO-DM, BMSC-DM, and none-DM groups, and N.Ob/T.Ar (3.2 × 102/mm2) was 1.7, 2.9, and 3.3 times. At 4-wk, daCO-DM induced osteoclastogenesis, 2.3 times higher than WTO-DM; but BMSC-DM or none-DM didn't. daCO-DM increased the expression of RANKL and MCSF, Vegfa and Angpt1, and Ngf in BMSCs, which contributes to osteoclastogenesis, angiogenesis, and neurogenesis, respectively. daCO-DM promoted H-type vessel formation and nerve markers β3-tubulin and NeuN expression. Conclusion: daCO-DM produces metabolic and neurovascularized organoid bone to accelerate the repair of bone defects. These features are expected to achieve the effect of autologous bone transplantation, suitable for transformation application. Decellularized matrix of osteocytes with dominant-active β-catenin (daCO-DM) promotes osteogenesis for regenerative repair. daCO-DM induces BMSCs to form stress fibers, conducive to cell adhesion, spreading, and differentiation towards osteoblasts. daCO-DM-induced osteoblasts have strong activity secreting dense and orderly-arranged type I collagen as host bone’s. daCO-DM induces BMSCs to express pre-osteoclastogenic cytokine RANKL and MCSF for osteoclastogenesis of marrow monocytes. daCO-DM enhances BMSCs to express angiogenic Vegfa and Angpt1, and neurogenic Ngf potentially for neurovascularization.
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Affiliation(s)
- Xiaofang Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Yufei Ma
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Jie Chen
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Yujiao Liu
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Guangliang Liu
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Pengtao Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Bo Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Makoto M. Taketo
- Department of Pharmacology, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Teresita Bellido
- Department of Physiology and Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR, 72223, USA
| | - Xiaolin Tu
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Corresponding author. Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China.
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55
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Afzal Z, Huguet EL. Bioengineering liver tissue by repopulation of decellularised scaffolds. World J Hepatol 2023; 15:151-179. [PMID: 36926238 PMCID: PMC10011915 DOI: 10.4254/wjh.v15.i2.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/22/2022] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
Liver transplantation is the only curative therapy for end stage liver disease, but is limited by the organ shortage, and is associated with the adverse consequences of immunosuppression. Repopulation of decellularised whole organ scaffolds with appropriate cells of recipient origin offers a theoretically attractive solution, allowing reliable and timely organ sourcing without the need for immunosuppression. Decellularisation methodologies vary widely but seek to address the conflicting objectives of removing the cellular component of tissues whilst keeping the 3D structure of the extra-cellular matrix intact, as well as retaining the instructive cell fate determining biochemicals contained therein. Liver scaffold recellularisation has progressed from small rodent in vitro studies to large animal in vivo perfusion models, using a wide range of cell types including primary cells, cell lines, foetal stem cells, and induced pluripotent stem cells. Within these models, a limited but measurable degree of physiologically significant hepatocyte function has been reported with demonstrable ammonia metabolism in vivo. Biliary repopulation and function have been restricted by challenges relating to the culture and propagations of cholangiocytes, though advances in organoid culture may help address this. Hepatic vasculature repopulation has enabled sustainable blood perfusion in vivo, but with cell types that would limit clinical applications, and which have not been shown to have the specific functions of liver sinusoidal endothelial cells. Minority cell groups such as Kupffer cells and stellate cells have not been repopulated. Bioengineering by repopulation of decellularised scaffolds has significantly progressed, but there remain significant experimental challenges to be addressed before therapeutic applications may be envisaged.
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Affiliation(s)
- Zeeshan Afzal
- Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Centre; Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Emmanuel Laurent Huguet
- Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Centre; Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
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56
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Khan RL, Khraibi AA, Dumée LF, Corridon PR. From waste to wealth: Repurposing slaughterhouse waste for xenotransplantation. Front Bioeng Biotechnol 2023; 11:1091554. [PMID: 36815880 PMCID: PMC9935833 DOI: 10.3389/fbioe.2023.1091554] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Slaughterhouses produce large quantities of biological waste, and most of these materials are underutilized. In many published reports, the possibility of repurposing this form of waste to create biomaterials, fertilizers, biogas, and feeds has been discussed. However, the employment of particular offal wastes in xenotransplantation has yet to be extensively uncovered. Overall, viable transplantable tissues and organs are scarce, and developing bioartificial components using such discarded materials may help increase their supply. This perspective manuscript explores the viability and sustainability of readily available and easily sourced slaughterhouse waste, such as blood vessels, eyes, kidneys, and tracheas, as starting materials in xenotransplantation derived from decellularization technologies. The manuscript also examines the innovative use of animal stem cells derived from the excreta to create a bioartificial tissue/organ platform that can be translated to humans. Institutional and governmental regulatory approaches will also be outlined to support this endeavor.
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Affiliation(s)
- Raheema L. Khan
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Ali A. Khraibi
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Ludovic F. Dumée
- Department of Chemical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Peter R. Corridon
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Healthcare Engineering Innovation Center, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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57
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Salti H, Kramer L, Nelz SC, Lorenz M, Breitrück A, Hofrichter J, Frank M, Schulz K, Mitzner S, Wasserkort R. Decellularization of precision-cut kidney slices-application of physical and chemical methods. Biomed Mater 2023; 18. [PMID: 36599165 DOI: 10.1088/1748-605x/acb02e] [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: 10/05/2022] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
The extracellular matrix (ECM) obtained by decellularization provides scaffolds with the natural complex architecture and biochemical composition of the target organ. Whole kidney decellularization by perfusion uses the vasculature to remove cells leaving a scaffold that can be recellularized with patient-specific cells. However, decellularization and recellularization are highly complex processes that require intensive optimization of various parameters. In pursuit of this, a huge number of animals must be sacrificed. Therefore, we used precision-cut kidney slices (PCKS) as a source of natural scaffolds, which were decellularized by immersion in chemical reagents allowing the examination of more parameters with less animals. However, chemical reagents have a damaging effect on the structure and components of the ECM. Therefore, this study aimed at investigating the effects of physical treatment methods on the effectiveness of PCKS decellularization by immersion in chemical reagents (CHEM). PCKS were treated physically before or during immersion in chemicals (CHEM) with high hydrostatic pressure (HHP), freezing-thawing cycles (FTC) or in an ultrasonic bath system (UBS). Biochemical and DNA quantification as well as structural evaluation with conventional histology and scanning electron microscopy (SEM) were performed. Compared to decellularization by CHEM alone, FTC treatment prior to CHEM was the most effective in reducing DNA while also preserving glycosaminoglycan (GAG) content. Moreover, while UBS resulted in a comparable reduction of DNA, it was the least effective in retaining GAGs. In contrast, despite the pretreatment with HHP with pressures up to 200 MPa, it was the least effective in DNA removal. Histological scoring showed that HHP scaffolds received the best score followed by UBS, FTC and CHEM scaffolds. However further analysis with SEM demonstrated a higher deterioration of the ultrastructure in UBS scaffolds. Altogether, pretreatment with FTC prior to CHEM resulted in a better balance between DNA removal and structural preservation.
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Affiliation(s)
- Haitham Salti
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany
| | - Lea Kramer
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany
| | - Sophie-Charlotte Nelz
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany.,Division of Nephrology, Department of Internal Medicine, Rostock University Medical Center, Rostock, Germany
| | - Mathias Lorenz
- Wismar University of Applied Sciences, Faculty of Engineering, Wismar, Germany
| | - Anne Breitrück
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany.,Division of Nephrology, Department of Internal Medicine, Rostock University Medical Center, Rostock, Germany
| | - Jacqueline Hofrichter
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany.,Division of Nephrology, Department of Internal Medicine, Rostock University Medical Center, Rostock, Germany
| | - Marcus Frank
- Medical Biology and Electron Microscopy Centre, Rostock University Medical Center, Rostock, Germany.,Department Life Light & Matter, University of Rostock, Rostock, Germany
| | - Karoline Schulz
- Medical Biology and Electron Microscopy Centre, Rostock University Medical Center, Rostock, Germany
| | - Steffen Mitzner
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany.,Division of Nephrology, Department of Internal Medicine, Rostock University Medical Center, Rostock, Germany
| | - Reinhold Wasserkort
- Department of Extracorporeal Therapy Systems (EXTHER), Fraunhofer Institute for Cell Therapy and Immunology (IZI), Rostock, Germany.,Division of Nephrology, Department of Internal Medicine, Rostock University Medical Center, Rostock, Germany
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58
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Zheng W, Feng D, Xiong X, Liao X, Wang S, Xu H, Le W, Wei Q, Yang L. The Role of cGAS-STING in Age-Related Diseases from Mechanisms to Therapies. Aging Dis 2023:AD.2023.0117. [PMID: 37163421 PMCID: PMC10389832 DOI: 10.14336/ad.2023.0117] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/17/2023] [Indexed: 05/12/2023] Open
Abstract
With aging, the incidence of age-related diseases increases. Hence, age-related diseases are inevitable. However, the mechanisms by which aging leads to the onset and progression of age-related diseases remain unclear. It has been reported that inflammation is closely associated with age-related diseases and that the cGAS-STING signaling pathway, which can sense the aberrant presence of cytosolic DNA during aging and induce an inflammatory response, is an important mediator of inflammation in age-related diseases. With a better understanding of the structure and molecular biology of the cGAS-STING signaling axis, numerous selective inhibitors and agonists targeting the cGAS-STING pathway in human age-related diseases have been developed to modulate inflammatory responses. Here, we provide a narrative review of the activity of the cGAS- STING pathway in age-related diseases and discuss its general mechanisms in the onset and progression of age-related diseases. In addition, we outline treatments targeting the cGAS-STING pathway, which may constitute a potential therapeutic alternative for age-related diseases.
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Affiliation(s)
- Weitao Zheng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dechao Feng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xingyu Xiong
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xinyang Liao
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sheng Wang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hang Xu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Weizhen Le
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qiang Wei
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Lu Yang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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59
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Cyanidin-3-O-Glucoside Induces the Apoptosis of Human Gastric Cancer MKN-45 Cells through ROS-Mediated Signaling Pathways. Molecules 2023; 28:molecules28020652. [PMID: 36677726 PMCID: PMC9860697 DOI: 10.3390/molecules28020652] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/25/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Cyanidin-3-O-glucoside (C3G), an active ingredient in anthocyanins, mainly exists in dark cereals. C3G was investigated for its effect on human gastric cancer (GC) cells, together with its molecular mechanism. The CCK-8 assay results showed that C3G had significant antiproliferative effects on GC cells, but it had little effect on normal cells. Western blot and flow cytometry results showed that C3G regulated the reduction of mitochondrial membrane potential and arrested the cell cycle in the G2/M phase through the AKT signaling pathway, causing the cells to undergo apoptosis. Additionally, in MKN-45 cells, C3G markedly raised intracellular reactive oxygen species (ROS) levels. The wound healing assay and Transwell assay results showed that MKN-45 cell migration was significantly inhibited. Western blot results showed that the expression of E-cadherin protein was upregulated and the expressions of β-catenin, N-cadherin, and Vimentin were downregulated. Additionally, following N-acetylcysteine treatment, the expression levels of these proteins were reduced. In conclusion, C3G caused MKN-45 cells to undergo apoptosis; arrested the cell cycle in the G2/M phase; hindered cell migration; and activated the MAPK, STAT3, and NF-κB signaling pathways, by inducing an increase in ROS levels. Thus, C3G may be a promising new medication for the treatment of GC.
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60
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Xiao W, Yang Y, Chu C, Rung SA, Wang Z, Man Y, Lin J, Qu Y. Macrophage response mediated by extracellular matrix: recent progress. Biomed Mater 2023; 18. [PMID: 36595269 DOI: 10.1088/1748-605x/aca946] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Biomaterials are one of efficient treatment options for tissue defects in regenerative medicine. Compared to synthetic materials which tend to induce chronic inflammatory response and fibrous capsule, extracellular matrix (ECM) scaffold materials composed of biopolymers are thought to be capable of inducing a pro-regenerative immune microenvironment and facilitate wound healing. Immune cells are the first line of response to implanted biomaterials. In particular, macrophages greatly affect cell behavior and the ultimate treatment outcome based on multiple cell phenotypes with various functions. The macrophage polarization status is considered as a general reflection of the characteristics of the immune microenvironment. Since numerous reports has emphasized the limitation of classical M1/M2 nomenclature, high-resolution techniques such as single-cell sequencing has been applied to recognize distinct macrophage phenotypes involved in host responses to biomaterials. After reviewing latest literatures that explored the immune microenvironment mediated by ECM scaffolds, this paper describe the behaviors of highly heterogeneous and plastic macrophages subpopulations which affect the tissue regeneration. The mechanisms by which ECM scaffolds interact with macrophages are also discussed from the perspectives of the ECM ultrastructure along with the nucleic acid, protein, and proteoglycan compositions, in order to provide targets for potential therapeutic modulation in regenerative medicine.
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Affiliation(s)
- Wenlan Xiao
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Yang Yang
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Chenyu Chu
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Sheng-An Rung
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Zhanqi Wang
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Yi Man
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Jie Lin
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Yili Qu
- Department of Oral Implantology & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
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McPherson CA, Kelly-Rajan K, Lefebvre d’Hellencourt C, Harry GJ. High Content Imaging and Quantification of Microglia Phagocytosis In Vitro. Curr Protoc 2023; 3:e638. [PMID: 36622815 PMCID: PMC10035415 DOI: 10.1002/cpz1.638] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Microglia function as the tissue-specific resident macrophages of the nervous system, performing immune and non-immune functions. These functions are critical to development and to maintain homeostasis in the nervous system throughout the lifespan, and during brain injury or disease. One method by which microglia maintain homeostasis is phagocytosis of aberrant proteins, extracellular debris, synapses, or apoptotic cells. Phagocytic function can be changed by environmental or genetic risk factors that affect microglia. These protocols present a rapid and simple in vitro high-content imaging protocol for studying phagocytosis in the murine microglia BV-2 cell line. High-content imaging and analysis enable versatility of the assay, which can be used to test multiple experimental conditions, or as a screening tool. © 2023 Wiley Periodicals LLC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA. Basic Protocol 1: Phagocytosis of fluorescently labeled particles Basic Protocol 2: Examining modifications to phagocytosis by test substances Basic Protocol 3: High content imaging and analysis of phagocytic cells.
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Affiliation(s)
- Christopher A. McPherson
- Mechanistic Toxicology Branch, Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Kiran Kelly-Rajan
- Mechanistic Toxicology Branch, Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
- University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Christian Lefebvre d’Hellencourt
- Inserm, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), plateforme CYROI, 97490 Sainte-Clotilde, France; Université de La Réunion, UMR 1188, 97490 Sainte-Clotilde, France
| | - G. Jean Harry
- Mechanistic Toxicology Branch, Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
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Waad Sadiq Z, Brioli A, Al-Abdulla R, Çetin G, Schütt J, Murua Escobar H, Krüger E, Ebstein F. Immunogenic cell death triggered by impaired deubiquitination in multiple myeloma relies on dysregulated type I interferon signaling. Front Immunol 2023; 14:982720. [PMID: 36936919 PMCID: PMC10018035 DOI: 10.3389/fimmu.2023.982720] [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: 06/30/2022] [Accepted: 02/06/2023] [Indexed: 03/06/2023] Open
Abstract
Introduction Proteasome inhibition is first line therapy in multiple myeloma (MM). The immunological potential of cell death triggered by defects of the ubiquitin-proteasome system (UPS) and subsequent perturbations of protein homeostasis is, however, less well defined. Methods In this paper, we applied the protein homeostasis disruptors bortezomib (BTZ), ONX0914, RA190 and PR619 to various MM cell lines and primary patient samples to investigate their ability to induce immunogenic cell death (ICD). Results Our data show that while BTZ treatment triggers sterile type I interferon (IFN) responses, exposure of the cells to ONX0914 or RA190 was mostly immunologically silent. Interestingly, inhibition of protein de-ubiquitination by PR619 was associated with the acquisition of a strong type I IFN gene signature which relied on key components of the unfolded protein and integrated stress responses including inositol-requiring enzyme 1 (IRE1), protein kinase R (PKR) and general control nonderepressible 2 (GCN2). The immunological relevance of blocking de-ubiquitination in MM was further reflected by the ability of PR619-induced apoptotic cells to facilitate dendritic cell (DC) maturation via type I IFN-dependent mechanisms. Conclusion Altogether, our findings identify de-ubiquitination inhibition as a promising strategy for inducing ICD of MM to expand current available treatments.
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Affiliation(s)
- Zeinab Waad Sadiq
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Annamaria Brioli
- Klinik und Poliklinik für Innere Medizin C, Universitätsmedizin Greifswald, Greifswald, Germany
- Klinik für Innere Medizin II, Universitätsklinikum Jena, Jena, Germany
| | - Ruba Al-Abdulla
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Gonca Çetin
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Jacqueline Schütt
- Klinik und Poliklinik für Innere Medizin C, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Hugo Murua Escobar
- Department of Medicine, Clinic III, Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, Rostock, Germany
| | - Elke Krüger
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Frédéric Ebstein
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
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Erica G, Edi S, Giovanna A, Mariarita C, Deborah S, Filippo R, Alessandro M, Piero N, Laura A. Characterization of a decellularized rat larynx: comparison between microscopy techniques. Ann Anat 2023; 245:152020. [PMID: 36367516 DOI: 10.1016/j.aanat.2022.152020] [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: 07/04/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND No effective method has yet been developed to efficiently reconstruct the larynx and restore its function. Decellularization has recently been tested for this purpose with very promising results. The goal of decellularization is to remove cells leaving an intact scaffold made of an extracellular matrix (ECM). Although the use of hematoxylin/eosin and Masson trichrome stains is widely accepted to highlight tissue structure, the methods based on evaluation of collagen and elastin are considered highly variable. The aim of this study was to develop a whole organ decellularization protocol and compare the qualitative and quantitative efficiency of some microscopy techniques for collagen and elastin detection in paraffin-embedded tissues. METHODS H&E, Masson Trichrome and DAPI staining as well as DNA quantification were used to evaluate decellularization efficiency. Van Gieson stain, Picrosirius Red stain (PRS) and multiphoton laser scanning microscopy (MPM) were carried out for collagen detection and quantitative assessment. Polarized PRS was used to investigate collagen network, and Weigert stain and MPM were used to detect and estimate elastin content. RESULTS The decellularization process removed the cellular components without affecting glycosaminoglycan, collagen and elastin content. Concerning collagen quantification, Van Gieson stain underestimated collagen content, while PRS, apparently less fading, did not reach reliable results when used as quantitative method. MPM effectively quantified collagen content. Collagen fibers were visualized much better under polarized light microscopy, allowing to underline that decellularization process affects the homogeneity of 3D collagen network. Concerning elastin detection, Weigert stain and MPM produced overlapping results. CONCLUSIONS An efficient protocol to decellularize the whole larynx was developed, allowing the removal of cells without affecting ECM integrity. The results supported the use of non-polarized PRS to highlight collagen, even the thin fibers, second harmonic generation for major fibrillar collagens and polarized PRS for 3D collagen network. Concerning elastin, Weigert stain and MPM showed similar results, thus the use of MPM, rather than that of the Weigert stain, may be suitable to avoid the additional time and costs of a histological staining.
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Affiliation(s)
- Gentilin Erica
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy; LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy.
| | - Simoni Edi
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy; LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy
| | - Albertin Giovanna
- CIR-Myo - Interdepartmental Research Center of Myology, University of Padua, Italy; Section of Human Anatomy, Department of Neuroscience, University of Padua, Italy, University of Padua, Italy
| | - Candito Mariarita
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy; LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy
| | - Sandrin Deborah
- LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy; Department of Physics and Astronomy "G. Galilei", University of Padua, via Marzolo 8, 35131 Padua, Italy
| | - Romanato Filippo
- LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy; Department of Physics and Astronomy "G. Galilei", University of Padua, via Marzolo 8, 35131 Padua, Italy; Laboratory of Optics and Bioimaging, Institute of Pediatric Research Città della Speranza, 35127 Padua, Italy
| | - Martini Alessandro
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy
| | - Nicolai Piero
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy; Section of Otorhinolaryngology-Head and Neck Surgery, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy
| | - Astolfi Laura
- Bioacoustics Research Laboratory, Department of Neurosciences, University of Padua, via G. Orus, 2b, 35129 Padua, Italy; LIFELAB Program, Consorzio per la Ricerca Sanitaria-CORIS, Veneto Region, 35128 Padua, Italy.
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Stocco E, Barbon S, Mammana M, Zambello G, Contran M, Parnigotto PP, Macchi V, Conconi MT, Rea F, De Caro R, Porzionato A. Preclinical and clinical orthotopic transplantation of decellularized/engineered tracheal scaffolds: A systematic literature review. J Tissue Eng 2023; 14:20417314231151826. [PMID: 36874984 PMCID: PMC9974632 DOI: 10.1177/20417314231151826] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 01/04/2023] [Indexed: 03/07/2023] Open
Abstract
Severe tracheal injuries that cannot be managed by mobilization and end-to-end anastomosis represent an unmet clinical need and an urgent challenge to face in surgical practice; within this scenario, decellularized scaffolds (eventually bioengineered) are currently a tempting option among tissue engineered substitutes. The success of a decellularized trachea is expression of a balanced approach in cells removal while preserving the extracellular matrix (ECM) architecture/mechanical properties. Revising the literature, many Authors report about different methods for acellular tracheal ECMs development; however, only few of them verified the devices effectiveness by an orthotopic implant in animal models of disease. To support translational medicine in this field, here we provide a systematic review on studies recurring to decellularized/bioengineered tracheas implantation. After describing the specific methodological aspects, orthotopic implant results are verified. Furtherly, the only three clinical cases of compassionate use of tissue engineered tracheas are reported with a focus on outcomes.
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Affiliation(s)
- Elena Stocco
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
| | - Silvia Barbon
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
| | - Marco Mammana
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University Hospital of Padova, Padova, Italy
| | - Giovanni Zambello
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University Hospital of Padova, Padova, Italy
| | - Martina Contran
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Pier Paolo Parnigotto
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
| | - Veronica Macchi
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
| | - Maria Teresa Conconi
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Federico Rea
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University Hospital of Padova, Padova, Italy
| | - Raffaele De Caro
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
| | - Andrea Porzionato
- Department of Neurosciences, Section of Human Anatomy, University of Padova, Padova, Italy
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Padova, Italy
- Foundation for Biology and Regenerative Medicine, Tissue Engineering and Signaling-TES, Onlus, Padova, Italy
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Qu S, Han Y, Liu Y, Zhu J, Acaroz U, Shen J, Zhu K. Milk Exosomes Facilitate Oral Delivery of Drugs against Intestinal Bacterial Infections. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:16069-16079. [PMID: 36515136 DOI: 10.1021/acs.jafc.2c04971] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Biopharmaceutics Classification System (BCS) class II and IV drugs exhibit low solubility and suffer a limitation in oral administration. Exosomes have attracted intensive attention in the efficient delivery of such compounds. However, low gastrointestinal stability and high production cost of exosomes hinder their development as drug carriers. Here, milk exosomes are functionalized with phosphatidylserine and are capable of improving the solubility of BCS class II and IV drugs, resulting in facilitating the oral delivery of the drugs. A natural flavonoid, α-mangostin, is loaded into exosomes (AExo) to enhance the antibacterial efficiency, demonstrated by clearing 99% of bacteria in macrophages. Furthermore, AExo exhibits high mucus penetrability and shows a significant therapeutic efficacy in two animal infection models. Collectively, this work expands the application of exosomes from bovine milk with simple operation and low cost, shedding light on the potential of milk exosomes in improving the solubility of drugs to enhance the efficacy of oral administration.
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Affiliation(s)
- Shaoqi Qu
- Key Laboratory of Traditional Chinese Veterinary Medicine Biology, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yiming Han
- College of Engineering, Peking University, Beijing 100871, China
| | - Ying Liu
- Key Laboratory of Traditional Chinese Veterinary Medicine Biology, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jiajia Zhu
- Key Laboratory of Traditional Chinese Veterinary Medicine Biology, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Ulas Acaroz
- Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar 03200, Turkey
| | - Jianzhong Shen
- Key Laboratory of Traditional Chinese Veterinary Medicine Biology, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Kui Zhu
- Key Laboratory of Traditional Chinese Veterinary Medicine Biology, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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Wang B, Qinglai T, Yang Q, Li M, Zeng S, Yang X, Xiao Z, Tong X, Lei L, Li S. Functional acellular matrix for tissue repair. Mater Today Bio 2022; 18:100530. [PMID: 36601535 PMCID: PMC9806685 DOI: 10.1016/j.mtbio.2022.100530] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 12/29/2022]
Abstract
In view of their low immunogenicity, biomimetic internal environment, tissue- and organ-like physicochemical properties, and functionalization potential, decellularized extracellular matrix (dECM) materials attract considerable attention and are widely used in tissue engineering. This review describes the composition of extracellular matrices and their role in stem-cell differentiation, discusses the advantages and disadvantages of existing decellularization techniques, and presents methods for the functionalization and characterization of decellularized scaffolds. In addition, we discuss progress in the use of dECMs for cartilage, skin, nerve, and muscle repair and the transplantation or regeneration of different whole organs (e.g., kidneys, liver, uterus, lungs, and heart), summarize the shortcomings of using dECMs for tissue and organ repair after refunctionalization, and examine the corresponding future prospects. Thus, the present review helps to further systematize the application of functionalized dECMs in tissue/organ transplantation and keep researchers up to date on recent progress in dECM usage.
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Affiliation(s)
- Bin Wang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Tang Qinglai
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Qian Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Mengmeng Li
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Shiying Zeng
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Xinming Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Zian Xiao
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Xinying Tong
- Department of Hemodialysis, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Lanjie Lei
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
- Corresponding author. State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Shisheng Li
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Corresponding author. Department of Otorhinolaryngology Head and Neck Surgery, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China.
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Ragusa R, Masotti S, Musetti V, Rocchiccioli S, Prontera C, Perrone M, Passino C, Clerico A, Caselli C. Cardiac troponins: Mechanisms of release and role in healthy and diseased subjects. Biofactors 2022; 49:351-364. [PMID: 36518005 DOI: 10.1002/biof.1925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022]
Abstract
The cardiac troponins (cTns), cardiac troponin C (cTnC), cTnT, and cTnI are key elements of myocardial apparatus, fixed as protein complex on the thin filament of sarcomere and are involved in the regulation of excitation-contraction coupling of cardiomyocytes in the presence of Ca2+ . Circulating cTnT and cTnI (cTns) increase following cardiac tissue necrosis, and they are consolidated biomarkers of acute myocardial infarction (AMI). However, the use of high sensitivity (hs)-immunoassay tests for cTnT and cTnI has made it possible to identify a multitude of other clinical conditions associated with increased circulating levels of cTns. cTns can be measured also in the peripheral circulation of healthy subjects or athletes, suggesting that different mechanisms are involved in the release of cTns in the blood independently of cardiac cell necrosis. In this review, the molecular/cellular mechanisms involved in cTns release in blood and the exploitation of cTnI and cTnT as biomarkers of cardiac adverse events, in addition to cardiac necrosis, are discussed.
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Affiliation(s)
| | - Silvia Masotti
- Scuola Superiore Sant'Anna, Institute of Life Sciences, Pisa, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Veronica Musetti
- Scuola Superiore Sant'Anna, Institute of Life Sciences, Pisa, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | | | | | - Marco Perrone
- Department of Cardiology, University of Rome Tor Vergata, Rome, Italy
| | - Claudio Passino
- Scuola Superiore Sant'Anna, Institute of Life Sciences, Pisa, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Aldo Clerico
- Scuola Superiore Sant'Anna, Institute of Life Sciences, Pisa, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
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Plüß M, Piantoni S, Tampe B, Kim AHJ, Korsten P. Belimumab for systemic lupus erythematosus - Focus on lupus nephritis. Hum Vaccin Immunother 2022; 18:2072143. [PMID: 35588699 PMCID: PMC9359396 DOI: 10.1080/21645515.2022.2072143] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/27/2022] [Indexed: 12/21/2022] Open
Abstract
In recent years, advances in the treatment and management of patients with systemic lupus erythematosus (SLE) have improved their life expectancy and quality of life. However, lupus nephritis (LN) still represents a major life-threatening complication of the disease. Belimumab (BEL), a fully human monoclonal IgG1λ antibody neutralizing soluble B cell activating factor, was approved more than ten years ago as add-on therapy in adults and pediatric patients with a highly active, autoantibody-positive disease despite standard of care (SoC). Recently, the superiority of the addition of BEL to SoC was also demonstrated in LN. In this review, we provide a comprehensive overview of the study landscape, available therapeutic options for SLE (focusing on BEL in renal and non-renal SLE), and new perspectives in the treatment field of this disease. A personalized treatment approach will likely become available with the advent of novel therapeutic agents for SLE and LN.
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Affiliation(s)
- Marlene Plüß
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Silvia Piantoni
- Rheumatology and Clinical Immunology Unit, Department of Clinical and Experimental Sciences, ASST Spedali Civili and University of Brescia, Brescia, Italy
| | - Björn Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Alfred H. J. Kim
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA
- Division of Immunobiology, Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO, USA
- Andrew M. and Jane M. Bursky Center of Human Immunology and Immunotherapy Programs, Washington University School of Medicine, Saint Louis, MO, USA
| | - Peter Korsten
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
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Stergioti EM, Manolakou T, Boumpas DT, Banos A. Antiviral Innate Immune Responses in Autoimmunity: Receptors, Pathways, and Therapeutic Targeting. Biomedicines 2022; 10:2820. [PMID: 36359340 PMCID: PMC9687478 DOI: 10.3390/biomedicines10112820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 09/28/2023] Open
Abstract
Innate immune receptors sense nucleic acids derived from viral pathogens or self-constituents and initiate an immune response, which involves, among other things, the secretion of cytokines including interferon (IFN) and the activation of IFN-stimulated genes (ISGs). This robust and well-coordinated immune response is mediated by the innate immune cells and is critical to preserving and restoring homeostasis. Like an antiviral response, during an autoimmune disease, aberrations of immune tolerance promote inflammatory responses to self-components, such as nucleic acids and immune complexes (ICs), leading to the secretion of cytokines, inflammation, and tissue damage. The aberrant immune response within the inflammatory milieu of the autoimmune diseases may lead to defective viral responses, predispose to autoimmunity, or precipitate a flare of an existing autoimmune disease. Herein, we review the literature on the crosstalk between innate antiviral immune responses and autoimmune responses and discuss the pitfalls and challenges regarding the therapeutic targeting of the mechanisms involved.
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Affiliation(s)
- Eirini Maria Stergioti
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- School of Medicine, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Theodora Manolakou
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- School of Medicine, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Dimitrios T. Boumpas
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
- 4th Department of Internal Medicine, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, 124 62 Athens, Greece
| | - Aggelos Banos
- Laboratory of Autoimmunity and Inflammation, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
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70
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Dolitzky A, Hazut I, Avlas S, Grisaru-Tal S, Itan M, Zaffran I, Levi-Schaffer F, Gerlic M, Munitz A. Differential regulation of Type 1 and Type 2 mouse eosinophil activation by apoptotic cells. Front Immunol 2022; 13:1041660. [PMID: 36389786 PMCID: PMC9662748 DOI: 10.3389/fimmu.2022.1041660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 10/07/2022] [Indexed: 08/18/2023] Open
Abstract
Eosinophils are multifunctional, evolutionary conserved leukocytes that are involved in a plethora of responses ranging from regulation of tissue homeostasis, host defense and cancer. Although eosinophils have been studied mostly in the context of Type 2 inflammatory responses, it is now evident that they participate in Type 1 inflammatory responses and can respond to Type 1 cytokines such as IFN-γ. Notably, both Type 1- and Type 2 inflammatory environments are characterized by tissue damage and cell death. Collectively, this raises the possibility that eosinophils can interact with apoptotic cells, which can alter eosinophil activation in the inflammatory milieu. Herein, we demonstrate that eosinophils can bind and engulf apoptotic cells. We further show that exposure of eosinophils to apoptotic cells induces marked transcriptional changes in eosinophils, which polarize eosinophils towards an anti-inflammatory phenotype that is associated with wound healing and cell migration. Using an unbiased RNA sequencing approach, we demonstrate that apoptotic cells suppress the inflammatory responses of eosinophils that were activated with IFN-γ + E. coli (e.g., Type 1 eosinophils) and augment IL-4-induced eosinophil activation (e.g., Type 2 eosinophils). These data contribute to the growing understanding regarding the heterogeneity of eosinophil activation patterns and highlight apoptotic cells as potential regulators of eosinophil polarization.
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Affiliation(s)
- Avishay Dolitzky
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Inbal Hazut
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shmulik Avlas
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sharon Grisaru-Tal
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michal Itan
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilan Zaffran
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Francesca Levi-Schaffer
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ariel Munitz
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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71
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Iwasaki T, Endo N, Nakayama Y, Kamei T, Shimanouchi T, Nakamura H, Hayashi K. Possible Role of Bent Structure of Methylated Lithocholic Acid on Artificial and Plasma Membranes. MEMBRANES 2022; 12:997. [PMID: 36295756 PMCID: PMC9610195 DOI: 10.3390/membranes12100997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/09/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Bile acids form micelles that are essential for the absorption of dietary lipids. However, excessive bile acid micelles can disrupt the plasma membrane by removing phospholipids, resulting in cell death. We hypothesized that the bent geometrical structure of the steroid scaffold of bile acids decreases the lipid order (similar to unsaturated phospholipids with cis double bonds), disrupting the plasma membrane. Here, lithocholic acid (LCA), a bile acid, was methylated to prevent micellization. Methylated lithocholic acid (Me-LCA) was mixed with a thin phase-separated lipid bilayer comprising 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), and cholesterol (Chol). Me-LCA was not localized in the DPPC-rich rigid phase but localized in the DOPC-rich fluid phase, and excess Me-LCA did not affect the phase separation. Me-LCA is distributed in the plasma and organelle membranes. However, Me-LCA with bent structure did not affect the membrane properties, membrane fluidity, and hydrophobicity of liposomes composed of DOPC, DPPC, and Chol and also did not affect the proliferation of cells.
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Affiliation(s)
- Tomoyuki Iwasaki
- Division of Medical Research Support of the Advanced Research Support Center, Ehime University, Shitsukawa, Toon 791-0295, Ehime, Japan
| | - Nobuyuki Endo
- Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama 639-1080, Nara, Japan
| | - Yuta Nakayama
- Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama 639-1080, Nara, Japan
| | - Toshiyuki Kamei
- Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama 639-1080, Nara, Japan
| | - Toshinori Shimanouchi
- Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, Japan
| | - Hidemi Nakamura
- Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama 639-1080, Nara, Japan
| | - Keita Hayashi
- Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama 639-1080, Nara, Japan
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72
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Record Ritchie RD, Salmon SL, Hiles MC, Metzger DW. Lack of immunogenicity of xenogeneic DNA from porcine biomaterials. Surg Open Sci 2022; 10:83-90. [PMID: 36039075 PMCID: PMC9418979 DOI: 10.1016/j.sopen.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/27/2022] [Accepted: 07/18/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Rae D. Record Ritchie
- Cook Biotech, Inc, 1425 Innovation Place, West Lafayette, IN, USA 47906
- Corresponding author at: 1425 Innovation Place, West Lafayette, IN 47906. Tel.: + 1-765-497-3355; fax: + 1-765-497-2361.
| | - Sharon L. Salmon
- Department of Immunology and Microbial Disease, Albany Medical College, 47 New Scotland Ave, MC-151, Albany, NY, USA 12208-3479
| | - Michael C. Hiles
- Cook Biotech, Inc, 1425 Innovation Place, West Lafayette, IN, USA 47906
| | - Dennis W. Metzger
- Department of Immunology and Microbial Disease, Albany Medical College, 47 New Scotland Ave, MC-151, Albany, NY, USA 12208-3479
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73
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Schilz JR, Dashner-Titus EJ, Simmons KA, Erdei E, Bolt AM, MacKenzie DA, Hudson LG. The immunotoxicity of natural and depleted uranium: From cells to people. Toxicol Appl Pharmacol 2022; 454:116252. [PMID: 36152676 PMCID: PMC10044422 DOI: 10.1016/j.taap.2022.116252] [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: 06/13/2022] [Revised: 08/30/2022] [Accepted: 09/16/2022] [Indexed: 10/31/2022]
Abstract
Uranium is a naturally occurring element found in the environment as a mixture of isotopes with differing radioactive properties. Enrichment of mined material results in depleted uranium waste with substantially reduced radioactivity but retains the capacity for chemical toxicity. Uranium mine and milling waste are dispersed by wind and rain leading to environmental exposures through soil, air, and water contamination. Uranium exposure is associated with numerous adverse health outcomes in humans, yet there is limited understanding of the effects of depleted uranium on the immune system. The purpose of this review is to summarize findings on uranium immunotoxicity obtained from cell, rodent and human population studies. We also highlight how each model contributes to an understanding of mechanisms that lead to immunotoxicity and limitations inherent within each system. Information from population, animal, and laboratory studies will be needed to significantly expand our knowledge of the contributions of depleted uranium to immune dysregulation, which may then inform prevention or intervention measures for exposed communities.
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Affiliation(s)
- Jodi R Schilz
- Division of Physical Therapy, School of Medicine, University of New Mexico, Albuquerque, NM, United States of America.
| | - Erica J Dashner-Titus
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
| | - Karen A Simmons
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
| | - Esther Erdei
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
| | - Alicia M Bolt
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
| | - Debra A MacKenzie
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
| | - Laurie G Hudson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, United States of America
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74
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Tada R, Nagao K, Tanaka R, Yamada S, Watanabe A, Negishi Y. Involvement of splenic marginal zone macrophages in the recognition of systemically administered phosphatidylserine-coated liposomes in mice. Int Immunopharmacol 2022; 112:109209. [PMID: 36084540 DOI: 10.1016/j.intimp.2022.109209] [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: 07/05/2022] [Revised: 08/23/2022] [Accepted: 08/29/2022] [Indexed: 11/05/2022]
Abstract
Autoimmune diseases present a significant clinical problem, highlighting the need for the development of novel or improved therapeutic methods. One of the factors that causes autoimmune diseases is a defect in the clearance of apoptotic cells by phagocytes. Thus, improved apoptotic cell processing has been considered as a strategy to treat autoimmune diseases. However, therapeutic strategies focusing on apoptotic cell clearance have not been approved till date. We have reported that liposomes composed of phosphatidylserine (PS liposomes) exhibit anti-inflammatory or immunosuppressive effects in macrophages. A PS liposome display PS on its surface, which plays a crucial role in the phagocytosis of apoptotic cells by marginal zone macrophages (MZMs), a key player in the clearance of apoptotic cells, by recognizing PS exposed on the surface of apoptotic cells. Therefore, we hypothesized that PS liposomes could be used as "antigen delivery vesicles" to act as a substitute for apoptotic cells in the treatment of autoimmune diseases. In this study, we showed that systemically administered PS liposomes accumulated in the marginal zone of the spleen due to recognition of surface-displayed PS by MZMs because it was observed that liposomes without PS did not accumulate in the marginal zone. In conclusion, PS liposomes may be useful vehicles to function as active agents and/or antigens against autoimmune diseases.
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Affiliation(s)
- Rui Tada
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan.
| | - Koichiro Nagao
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Riki Tanaka
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Sumire Yamada
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Ayano Watanabe
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Yoichi Negishi
- Department of Drug Delivery and Molecular Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
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75
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Liu C, Li P, Zheng J, Wang Y, Wu W, Liu X. Role of necroptosis in airflow limitation in chronic obstructive pulmonary disease: focus on small-airway disease and emphysema. Cell Death Dis 2022; 8:363. [PMID: 35973987 PMCID: PMC9381515 DOI: 10.1038/s41420-022-01154-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/31/2022] [Accepted: 08/01/2022] [Indexed: 11/09/2022]
Abstract
Airflow limitation with intractable progressive mechanisms is the main disease feature of chronic obstructive pulmonary disease (COPD). The pathological process of airflow limitation in COPD involves necroptosis, a form of programmed necrotic cell death with pro-inflammatory properties. In this paper, the correlations of small-airway disease and emphysema with airflow limitation in COPD were firstly reviewed; then, based on this, the effects of necroptosis on small-airway disease and emphysema were analysed, and the possible mechanisms of necroptosis causing airflow limitation in COPD were explored. The results showed that airflow limitation is caused by a combination of small-airway disease and emphysema. In addition, toxic particulate matter stimulates epithelial cells to trigger necroptosis, and necroptosis promotes the expulsion of cell contents, the abnormal hyperplasia of pro-inflammatory mediators and the insufficient clearance of dead cells by macrophages; these processes, coupled with the interaction of necroptosis and oxidative stress, collectively result in small-airway disease and emphysema in COPD.
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Affiliation(s)
- Chanjing Liu
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, People's Republic of China
| | - Peijun Li
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, People's Republic of China
| | - Jiejiao Zheng
- Department of Rehabilitation Medicine, Huadong Hospital, Shanghai, People's Republic of China
| | - Yingqi Wang
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, People's Republic of China
| | - Weibing Wu
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, People's Republic of China.
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.
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76
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Schmitz TC, van Doeselaar M, Tryfonidou MA, Ito K. Detergent-Free Decellularization of Notochordal Cell-Derived Matrix Yields a Regenerative, Injectable, and Swellable Biomaterial. ACS Biomater Sci Eng 2022; 8:3912-3923. [PMID: 35942885 PMCID: PMC9472229 DOI: 10.1021/acsbiomaterials.2c00790] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Porcine notochordal cell-derived matrix (NCM) has anti-inflammatory
and regenerative effects on degenerated intervertebral discs. For
its clinical use, safety must be assured. The porcine DNA is concerning
because of (1) the transmission of endogenous retroviruses and (2)
the inflammatory potential of cell-free DNA. Here, we present a simple,
detergent-free protocol: tissue lyophilization lyses cells, and matrix
integrity is preserved by limiting swelling during decellularization.
DNA is digested quickly by a high nuclease concentration, followed
by a short washout. Ninety-four percent of DNA was removed, and there
was no loss of glycosaminoglycans or collagen. Forty-three percent
of the total proteins remained in the decellularized NCM (dNCM). dNCM
stimulated as much GAG production as NCM in nucleus pulposus cells
but lost some anti-inflammatory effects. Reconstituted pulverized
dNCM yielded a soft, shear-thinning biomaterial with a swelling ratio
of 350% that also acted as an injectable cell carrier (cell viability
>70%). dNCM can therefore be used as the basis for future biomaterials
aimed at disc regeneration on a biological level and may restore joint
mechanics by creating swelling pressure within the intervertebral
disc.
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Affiliation(s)
- Tara C Schmitz
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Marina van Doeselaar
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Marianna A Tryfonidou
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - Keita Ito
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
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77
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Zhang G, Dong D, Wan X, Zhang Y. Cardiomyocyte death in sepsis: Mechanisms and regulation (Review). Mol Med Rep 2022; 26:257. [PMID: 35703348 PMCID: PMC9218731 DOI: 10.3892/mmr.2022.12773] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 05/20/2022] [Indexed: 11/06/2022] Open
Abstract
Sepsis‑induced cardiac dysfunction is one of the most common types of organ dysfunction in sepsis; its pathogenesis is highly complex and not yet fully understood. Cardiomyocytes serve a key role in the pathophysiology of cardiac function; due to the limited ability of cardiomyocytes to regenerate, their loss contributes to decreased cardiac function. The activation of inflammatory signalling pathways affects cardiomyocyte function and modes of cardiomyocyte death in sepsis. Prevention of cardiomyocyte death is an important therapeutic strategy for sepsis‑induced cardiac dysfunction. Thus, understanding the signalling pathways that activate cardiomyocyte death and cross‑regulation between death modes are key to finding therapeutic targets. The present review focused on advances in understanding of sepsis‑induced cardiomyocyte death pathways, including apoptosis, necroptosis, mitochondria‑mediated necrosis, pyroptosis, ferroptosis and autophagy. The present review summarizes the effect of inflammatory activation on cardiomyocyte death mechanisms, the diversity of regulatory mechanisms and cross‑regulation between death modes and the effect on cardiac function in sepsis to provide a theoretical basis for treatment of sepsis‑induced cardiac dysfunction.
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Affiliation(s)
- Geping Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Dan Dong
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xianyao Wan
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Yongli Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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78
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Charoensappakit A, Sae-Khow K, Leelahavanichkul A. Gut Barrier Damage and Gut Translocation of Pathogen Molecules in Lupus, an Impact of Innate Immunity (Macrophages and Neutrophils) in Autoimmune Disease. Int J Mol Sci 2022; 23:ijms23158223. [PMID: 35897790 PMCID: PMC9367802 DOI: 10.3390/ijms23158223] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 02/08/2023] Open
Abstract
The gut barrier is a single cell layer that separates gut micro-organisms from the host, and gut permeability defects result in the translocation of microbial molecules from the gut into the blood. Despite the silent clinical manifestation, gut translocation of microbial molecules can induce systemic inflammation that might be an endogenous exacerbating factor of systemic lupus erythematosus. In contrast, circulatory immune-complex deposition and the effect of medications on the gut, an organ with an extremely large surface area, of patients with active lupus might cause gut translocation of microbial molecules, which worsens lupus severity. Likewise, the imbalance of gut microbiota may initiate lupus and/or interfere with gut integrity which results in microbial translocation and lupus exacerbation. Moreover, immune hyper-responsiveness of innate immune cells (macrophages and neutrophils) is demonstrated in a lupus model from the loss of inhibitory Fc gamma receptor IIb (FcgRIIb), which induces prominent responses through the cross-link between activating-FcgRs and innate immune receptors. The immune hyper-responsiveness can cause cell death, especially apoptosis and neutrophil extracellular traps (NETosis), which possibly exacerbates lupus, partly through the enhanced exposure of the self-antigens. Leaky gut monitoring and treatments (such as probiotics) might be beneficial in lupus. Here, we discuss the current information on leaky gut in lupus.
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Affiliation(s)
- Awirut Charoensappakit
- Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kritsanawan Sae-Khow
- Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Asada Leelahavanichkul
- Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Nephrology Unit, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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79
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Yuan L, Li P, Zheng Q, Wang H, Xiao H. The Ubiquitin-Proteasome System in Apoptosis and Apoptotic Cell Clearance. Front Cell Dev Biol 2022; 10:914288. [PMID: 35874820 PMCID: PMC9300945 DOI: 10.3389/fcell.2022.914288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/16/2022] [Indexed: 12/30/2022] Open
Abstract
Ubiquitination, a critical post-translational modification of proteins, refers to the covalent attachment of ubiquitin to the substrate and is involved in various biological processes such as protein stability regulation, DNA damage repair, and apoptosis, among others. E3 ubiquitin ligases are essential enzymes of the ubiquitin pathway with high substrate specificity and precisely regulate specific proteins’ turnover. As one of the most well-studied forms of programmed cell death, apoptosis is substantially conserved across the evolutionary tree. The final critical stage in apoptosis is the removal of apoptotic cells by professional and non-professional phagocytes. Apoptosis and apoptotic cell clearance are crucial for the normal development, differentiation, and growth of multicellular organisms, as well as their association with a variety of inflammatory and immune diseases. In this review, we discuss the role of ubiquitination and deubiquitination in apoptosis and apoptotic cell clearance.
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Affiliation(s)
- Lei Yuan
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Peiyao Li
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Qian Zheng
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Hui Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Hui Xiao
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
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80
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Efferocytosis in lung mucosae: implications for health and disease. Immunol Lett 2022; 248:109-118. [PMID: 35843361 DOI: 10.1016/j.imlet.2022.07.005] [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: 03/11/2022] [Revised: 05/15/2022] [Accepted: 07/11/2022] [Indexed: 11/21/2022]
Abstract
Efferocytosis is imperative to maintain lung homeostasis and control inflammation. Populations of lung macrophages are the main efferocytes in this tissue, responsible for controlling immune responses and avoiding unrestrained inflammation and autoimmunity through the expression of a plethora of receptors that recognize multiple 'eat me' signals on apoptotic cells. Efferocytosis is essentially anti-inflammatory and tolerogenic. However, in some situations, apoptotic cells phagocytosis can elicit inflammatory and immunogenic immune responses. Here, we summarized the current knowledge of the mechanisms of efferocytosis, and how any abnormality in this process may have an important contribution to the lung pathophysiology of many chronic inflammatory lung diseases such as asthma, acute lung injury, chronic obstructive pulmonary disease, and cystic fibrosis. Further, we consider the consequences of the dual role of efferocytosis on the susceptibility or resistance to pulmonary microbial infections. Understanding how efferocytosis works in different contexts will be useful to the development of new and more effective strategies to control the diversity of lung diseases.
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81
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Stock AA, Gonzalez GC, Pete SI, De Toni T, Berman DM, Rabassa A, Diaz W, Geary JC, Willman M, Jackson JM, DeHaseth NH, Ziebarth NM, Hogan AR, Ricordi C, Kenyon NS, Tomei AA. Performance of islets of Langerhans conformally coated via an emulsion cross-linking method in diabetic rodents and nonhuman primates. SCIENCE ADVANCES 2022; 8:eabm3145. [PMID: 35767620 PMCID: PMC9242596 DOI: 10.1126/sciadv.abm3145] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Polyethylene glycol (PEG)-based conformal coating (CC) encapsulation of transplanted islets is a promising β cell replacement therapy for the treatment of type 1 diabetes without chronic immunosuppression because it minimizes capsule thickness, graft volume, and insulin secretion delay. However, we show here that our original CC method, the direct method, requiring exposure of islets to low pH levels and inclusion of viscosity enhancers during coating, severely affected the viability, scalability, and biocompatibility of CC islets in nonhuman primate preclinical models of type 1 diabetes. We therefore developed and validated in vitro and in vivo, in several small- and large-animal models of type 1 diabetes, an augmented CC method-emulsion method-that achieves hydrogel CCs around islets at physiological pH for improved cytocompatibility, with PEG hydrogels for increased biocompatibility and with fivefold increase in encapsulation throughput for enhanced scalability.
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Affiliation(s)
- Aaron A. Stock
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Grisell C. Gonzalez
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Sophia I. Pete
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Teresa De Toni
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Dora M. Berman
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Alexander Rabassa
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Waldo Diaz
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - James C. Geary
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Melissa Willman
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Joy M. Jackson
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Noa H. DeHaseth
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Noel M. Ziebarth
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
| | - Anthony R. Hogan
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Camillo Ricordi
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Norma S. Kenyon
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Alice A. Tomei
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL 33146, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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82
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Sarmin AM, El Moussaid N, Suntornnond R, Tyler EJ, Kim YH, Di Cio S, Megone WV, Pearce O, Gautrot JE, Dawson J, Connelly JT. Multi-Scale Analysis of the Composition, Structure, and Function of Decellularized Extracellular Matrix for Human Skin and Wound Healing Models. Biomolecules 2022; 12:biom12060837. [PMID: 35740962 PMCID: PMC9221483 DOI: 10.3390/biom12060837] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/08/2022] [Accepted: 06/14/2022] [Indexed: 02/04/2023] Open
Abstract
The extracellular matrix (ECM) is a complex mixture of structural proteins, proteoglycans, and signaling molecules that are essential for tissue integrity and homeostasis. While a number of recent studies have explored the use of decellularized ECM (dECM) as a biomaterial for tissue engineering, the complete composition, structure, and mechanics of these materials remain incompletely understood. In this study, we performed an in-depth characterization of skin-derived dECM biomaterials for human skin equivalent (HSE) models. The dECM materials were purified from porcine skin, and through mass spectrometry profiling, we quantified the presence of major ECM molecules, including types I, III, and VI collagen, fibrillin, and lumican. Rheological analysis demonstrated the sol-gel and shear-thinning properties of dECM materials, indicating their physical suitability as a tissue scaffold, while electron microscopy revealed a complex, hierarchical structure of nanofibers in dECM hydrogels. The dECM materials were compatible with advanced biofabrication techniques, including 3D printing within a gelatin microparticle support bath, printing with a sacrificial material, or blending with other ECM molecules to achieve more complex compositions and structures. As a proof of concept, we also demonstrate how dECM materials can be fabricated into a 3D skin wound healing model using 3D printing. Skin-derived dECM therefore represents a complex and versatile biomaterial with advantageous properties for the fabrication of next-generation HSEs.
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Affiliation(s)
- Atiya M. Sarmin
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London E1 4NS, UK; (A.M.S.); (N.E.M.); (R.S.)
| | - Nadia El Moussaid
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London E1 4NS, UK; (A.M.S.); (N.E.M.); (R.S.)
| | - Ratima Suntornnond
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London E1 4NS, UK; (A.M.S.); (N.E.M.); (R.S.)
| | - Eleanor J. Tyler
- Barts Cancer Institute, Queen Mary University of London, London E1 4NS, UK; (E.J.T.); (O.P.)
| | - Yang-Hee Kim
- Institute of Developmental Sciences, Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK; (Y.-H.K.); (J.D.)
| | - Stefania Di Cio
- School of Engineering and Materials Sciences, Queen Mary University of London, London E1 4NS, UK; (S.D.C.); (W.V.M.); (J.E.G.)
| | - William V. Megone
- School of Engineering and Materials Sciences, Queen Mary University of London, London E1 4NS, UK; (S.D.C.); (W.V.M.); (J.E.G.)
| | - Oliver Pearce
- Barts Cancer Institute, Queen Mary University of London, London E1 4NS, UK; (E.J.T.); (O.P.)
| | - Julien E. Gautrot
- School of Engineering and Materials Sciences, Queen Mary University of London, London E1 4NS, UK; (S.D.C.); (W.V.M.); (J.E.G.)
| | - Jonathan Dawson
- Institute of Developmental Sciences, Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK; (Y.-H.K.); (J.D.)
| | - John T. Connelly
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London E1 4NS, UK; (A.M.S.); (N.E.M.); (R.S.)
- Correspondence:
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83
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Peng X, Cheng C, Yue L, Liu Y, Yu X. A Comparative Study Between Porcine Peritoneum and Pericardium as Cardiovascular Material. Tissue Eng Part C Methods 2022; 28:272-284. [PMID: 35611974 DOI: 10.1089/ten.tec.2022.0028] [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: 11/12/2022] Open
Abstract
Decellularized porcine pericardium has many applications in the cardiovascular field for its excellent properties. The peritoneum is a single-layer bio-dialysis membrane with many similarities and differences in physical characteristics, biochemical composition, and structure to the pericardium. The limited available literature suggests that, similar to the pericardium, the peritoneum has good application potential in the field of cardiovascular substitute materials. This research focused on comparing the differences between decellularized peritoneum and decellularized pericardium in microstructure, biochemical composition, mechanical properties, hemocompatibility, in vitro enzymatic degradation, in vitro calcification, cytocompatibility, and other vital indicators. The peritoneum was consistent with pericardium in terms of fibrous structure, hemocompatibility, in vitro calcification, and cytocompatibility. The peritoneal elastic fiber content (219 μg/mg) was significantly higher than that of the pericardium (66 μg/mg), resulting in two to three times higher maximum load (21.1 N) and burst pressure (1309 mmHg), and better performance than the pericardium in terms of in vitro resistance to enzymatic degradation. In the cardiovascular field, decellularized peritoneum can be used as vascular substitute material. Impact statement There are many similarities between the embryonic origin and morphological structure of the porcine peritoneum and the porcine pericardium, but little research has been done on the use of the porcine peritoneum as a biomaterial. In this compared research, we showed that porcine peritoneum had better resistance to enzymatic degradation, better stretching, and more suitable burst pressure for being used as vascular substitute material. This research is the first to describe the structural composition of porcine peritoneum and its advantageous properties as a cardiovascular material.
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Affiliation(s)
- Xu Peng
- College of Polymer Science and Engineering, Experimental and Research Animal Institute, Sichuan University, Chengdu, China
| | - Can Cheng
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Lunli Yue
- Department of Oncology Hematology, Western Theater Command Air Force Hospital, Chengdu, China
| | - Yan Liu
- Experimental and Research Animal Institute, Sichuan University, Chengdu, China
| | - Xixun Yu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
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84
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Silberberg E, Filep JG, Ariel A. Weathering the Storm: Harnessing the Resolution of Inflammation to Limit COVID-19 Pathogenesis. Front Immunol 2022; 13:863449. [PMID: 35615359 PMCID: PMC9124752 DOI: 10.3389/fimmu.2022.863449] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/22/2022] [Indexed: 12/13/2022] Open
Abstract
The resolution of inflammation is a temporally and spatially coordinated process that in its innate manifestations, primarily involves neutrophils and macrophages. The shutdown of infection or injury-induced acute inflammation requires termination of neutrophil accumulation within the affected sites, neutrophil demise, and clearance by phagocytes (efferocytosis), such as tissue-resident and monocyte-derived macrophages. This must be followed by macrophage reprogramming from the inflammatory to reparative and consequently resolution-promoting phenotypes and the production of resolution-promoting lipid and protein mediators that limit responses in various cell types and promote tissue repair and return to homeostatic architecture and function. Recent studies suggest that these events, and macrophage reprogramming to pro-resolving phenotypes in particular, are not only important in the acute setting, but might be paramount in limiting chronic inflammation, autoimmunity, and various uncontrolled cytokine-driven pathologies. The SARS-CoV-2 (COVID-19) pandemic has caused a worldwide health and economic crisis. Severe COVID-19 cases that lead to high morbidity are tightly associated with an exuberant cytokine storm that seems to trigger shock-like pathologies, leading to vascular and multiorgan failures. In other cases, the cytokine storm can lead to diffuse alveolar damage that results in acute respiratory distress syndrome (ARDS) and lung failure. Here, we address recent advances on effectors in the resolution of inflammation and discuss how pro-resolution mechanisms with particular emphasis on macrophage reprogramming, might be harnessed to limit the universal COVID-19 health threat.
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Affiliation(s)
- Esther Silberberg
- Department of Biology and Human Biology, University of Haifa, Haifa, Israel
| | - János G. Filep
- Department of Pathology and Cell Biology, University of Montreal, Montreal, QC, Canada
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
- *Correspondence: Amiram Ariel, ; János G. Filep,
| | - Amiram Ariel
- Department of Biology and Human Biology, University of Haifa, Haifa, Israel
- *Correspondence: Amiram Ariel, ; János G. Filep,
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85
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Benne N, Ter Braake D, Stoppelenburg AJ, Broere F. Nanoparticles for Inducing Antigen-Specific T Cell Tolerance in Autoimmune Diseases. Front Immunol 2022; 13:864403. [PMID: 35392079 PMCID: PMC8981588 DOI: 10.3389/fimmu.2022.864403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/28/2022] [Indexed: 12/17/2022] Open
Abstract
Autoimmune diseases affect many people worldwide. Current treatment modalities focus on the reduction of disease symptoms using anti-inflammatory drugs which can lead to side effects due to systemic immune suppression. Restoration of immune tolerance by down-regulating auto-reactive cells in an antigen-specific manner is currently the “holy grail” for the treatment of autoimmune diseases. A promising strategy is the use of nanoparticles that can deliver antigens to antigen-presenting cells which in turn can enhance antigen-specific regulatory T cells. In this review, we highlight some promising cell targets (e.g. liver sinusoidal endothelial cells and splenic marginal zone macrophages) for exploiting natural immune tolerance processes, and several strategies by which antigen-carrying nanoparticles can target these cells. We also discuss how nanoparticles carrying immunomodulators may be able to activate tolerance in other antigen-presenting cell types. Finally, we discuss some important aspects that must be taken into account when translating data from animal studies to patients.
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Affiliation(s)
- Naomi Benne
- Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Daniëlle Ter Braake
- Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Arie Jan Stoppelenburg
- Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,Department of Rheumatology, University Medical Center Utrecht, Utrecht, Netherlands.,Department of Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Femke Broere
- Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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86
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Interdisciplinary Methods for Zoonotic Tissue Acellularization for Natural Heart Valve Substitute of Biomimetic Materials. MATERIALS 2022; 15:ma15072594. [PMID: 35407927 PMCID: PMC9000896 DOI: 10.3390/ma15072594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/14/2022] [Accepted: 03/29/2022] [Indexed: 02/04/2023]
Abstract
The goal of this work was to create a bioactive tissue-based scaffold using multi-disciplinary engineering materials and tissue engineering techniques. Materials & methods: Physical techniques such as direct laser interference lithography and proton radiation were selected as alternative methods of enzymatic and chemical decellularization to remove cells from a tissue without degradation of the extracellular matrix nor its protein structure. This study was an attempt to prepare a functional scaffold for cell culture from tissue of animal origin using new physical methods that have not been considered before. The work was carried out under full control of the histological and molecular analysis. Results & conclusions: The most important finding was that the physical methods used to obtain the decellularized tissue scaffold differed in the efficiency of cell removal from the tissue in favour of the laser method. Both the laser method and the proton method exhibited a destructive effect on tissue structure and the genetic material in cell nuclei. This effect was visible on histology images as blurred areas within the cell nucleus. The finite element 3D simulation of decellularization process of the three-layer tissue of animal origin sample reflected well the mechanical response of tissue described by hyperelastic material models and provided results comparable to the experimental ones.
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87
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Chen F, Deng J, Luo L, Zhu Y, Dong Y, Yang Y, Zhang R, Chen J, Zhou Q. Crosslinked Decellularized Porcine Pericardium as a Substrate for Conjunctival Reconstruction. Stem Cells Int 2022; 2022:7571146. [PMID: 35342430 PMCID: PMC8941537 DOI: 10.1155/2022/7571146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/24/2022] [Accepted: 02/26/2022] [Indexed: 11/18/2022] Open
Abstract
Seeking for suitable conjunctival reconstruction substitutes to overcome the limitations of current substitutes, such as amniotic membrane, is urgent. Decellularized tissues have become a promising strategy for tissue engineering. In this study, we prepared decellularized porcine pericardium (DPP) scaffolds by the phospholipase A2 method and crosslinked them with aspartic acid (Asp) and human endothelial growth factor (hEGF) to enhance biological performance on the DPP, obtaining DPP-Asp-hEGF scaffolds. In vitro DPP showed lower apoptosis, highly desirable, well preservation of extracellular matrix components, and favorable macro-microstructure, which was confirmed by histology, immunofluorescence, electron microscopy, collagen and DNA quantification, and cytotoxicity assay, compared to the native porcine pericardium (NPP). The crosslinked efficacy of the DPP-Asp-hEGF was furtherer verified by in vitro experiments with Fourier transform infrared (FTIR) and X-ray diffraction (XRD). Through animal models of conjunctiva defect model, the DPP-Asp-hEGF revealed a closed, multilayer epithelium with an equal amount of goblet cells and no indication for conjunctival scarring after 28 days, compared to amniotic membrane (AM) groups and sham groups. These results suggested that DPP-Asp-hEGF can offer a good conjunctival reconstructive substitute both in structure and in function.
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Affiliation(s)
- Fangyuan Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Jingyue Deng
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou 510900, China
| | - Lishi Luo
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- Shenzhen Eye Hospital, Affiliated Hospital of Jinan University, Shenzhen 518040, China
| | - Ying Zhu
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Yuying Dong
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Yuanting Yang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Rijia Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Jian Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Qing Zhou
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
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88
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Krishnan A, Wang H, MacArthur JW. Applications of Tissue Decellularization Techniques in Ventricular Myocardial Biofabrication. Front Bioeng Biotechnol 2022; 10:802283. [PMID: 35265593 PMCID: PMC8899393 DOI: 10.3389/fbioe.2022.802283] [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: 10/26/2021] [Accepted: 01/21/2022] [Indexed: 11/13/2022] Open
Abstract
Ischemic heart disease is the leading cause of death around the world, and though the advent of coronary revascularization has revolutionized its treatment, many patients who sustain ischemic injury to the heart will go on to develop heart failure. Biofabrication of ventricular myocardium for replacement of irreversibly damaged ischemic myocardium is sought after as a potential therapy for ischemic heart failure, though challenges in reliably producing this biomaterial have limited its clinical application. One method that shows promise for generation of functional myocardium is the use of tissue decellularization to serve as a scaffold for biofabrication. This review outlines the methods, materials, challenges, and prospects of tissue decellularization techniques for ventricular myocardium biofabrication. Decellularization aims to preserve the architecture and composition of the extracellular matrix of the tissue it is applied to, allowing for the subsequent implantation of stem cells of the desired cell type. Decellularization can be achieved with multiple reagents, most of which have detergent properties. A variety of cell types can be implanted in the resulting scaffold, including cardiac progenitor cells, and embryonic or induced pluripotent stem cells to generate a range of tissue, from patches to beating myocardium. The future of this biofabrication method will likely emphasize patient specific tissue engineering to generate complex 3-dimensional constructs that can replace dysfunctional cardiac structures.
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Affiliation(s)
- Aravind Krishnan
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Hanjay Wang
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - John Ward MacArthur
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, United States
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89
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Liu KE, Raymond MH, Ravichandran KS, Kucenas S. Clearing Your Mind: Mechanisms of Debris Clearance After Cell Death During Neural Development. Annu Rev Neurosci 2022; 45:177-198. [PMID: 35226828 PMCID: PMC10157384 DOI: 10.1146/annurev-neuro-110920-022431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Neurodevelopment and efferocytosis have fascinated scientists for decades. How an organism builds a nervous system that is precisely tuned for efficient behaviors and survival and how it simultaneously manages constant somatic cell turnover are complex questions that have resulted in distinct fields of study. Although neurodevelopment requires the overproduction of cells that are subsequently pruned back, very few studies marry these fields to elucidate the cellular and molecular mechanisms that drive nervous system development through the lens of cell clearance. In this review, we discuss these fields to highlight exciting areas of future synergy. We first review neurodevelopment from the perspective of overproduction and subsequent refinement and then discuss who clears this developmental debris and the mechanisms that control these events. We then end with how a more deliberate merger of neurodevelopment and efferocytosis could reframe our understanding of homeostasis and disease and discuss areas of future study. Expected final online publication date for the Annual Review of Neuroscience, Volume 45 is July 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Kendra E Liu
- Neuroscience Graduate Program, University of Virginia, Charlottesville, Virginia, USA; .,Program in Fundamental Neuroscience, University of Virginia, Charlottesville, Virginia, USA
| | - Michael H Raymond
- Neuroscience Graduate Program, University of Virginia, Charlottesville, Virginia, USA; .,Center for Clearance, University of Virginia, Charlottesville, Virginia, USA
| | - Kodi S Ravichandran
- Neuroscience Graduate Program, University of Virginia, Charlottesville, Virginia, USA; .,Center for Clearance, University of Virginia, Charlottesville, Virginia, USA.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, USA.,VIB-UGent Center for Inflammation Research and the Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sarah Kucenas
- Neuroscience Graduate Program, University of Virginia, Charlottesville, Virginia, USA; .,Program in Fundamental Neuroscience, University of Virginia, Charlottesville, Virginia, USA.,Department of Biology, University of Virginia, Charlottesville, Virginia, USA
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90
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Shirato K, Sato S. Macrophage Meets the Circadian Clock: Implication of the Circadian Clock in the Role of Macrophages in Acute Lower Respiratory Tract Infection. Front Cell Infect Microbiol 2022; 12:826738. [PMID: 35281442 PMCID: PMC8904936 DOI: 10.3389/fcimb.2022.826738] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
The circadian rhythm is a biological system that creates daily variations of physiology and behavior with a 24-h cycle, which is precisely controlled by the molecular circadian clock. The circadian clock dominates temporal activity of physiological homeostasis at the molecular level, including endocrine secretion, metabolic, immune response, coupled with extrinsic environmental cues (e.g., light/dark cycles) and behavioral cues (e.g., sleep/wake cycles and feeding/fasting cycles). The other side of the clock is that the misaligned circadian rhythm contributes to the onset of a variety of diseases, such as cancer, metabolic diseases, and cardiovascular diseases, the acceleration of aging, and the development of systemic inflammation. The role played by macrophages is a key mediator between circadian disruption and systemic inflammation. At the molecular level, macrophage functions are under the direct control of the circadian clock, and thus the circadian misalignment remodels the phenotype of macrophages toward a ‘killer’ mode. Remarkably, the inflammatory macrophages induce systemic and chronic inflammation, leading to the development of inflammatory diseases and the dampened immune defensive machinery against infectious diseases such as COVID-19. Here, we discuss how the circadian clock regulates macrophage immune functions and provide the potential risk of misaligned circadian rhythms against inflammatory and infectious diseases.
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Affiliation(s)
- Ken Shirato
- Department of Molecular Predictive Medicine and Sport Science, Kyorin University School of Medicine, Mitaka, Japan
| | - Shogo Sato
- Center for Biological Clocks Research, Department of Biology, Texas A&M University, College Station, TX, United States
- *Correspondence: Shogo Sato,
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91
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Morozova DS, Martyanov AA, Obydennyi SI, Korobkin JJD, Sokolov AV, Shamova EV, Gorudko IV, Khoreva AL, Shcherbina A, Panteleev MA, Sveshnikova AN. Ex vivo observation of granulocyte activity during thrombus formation. BMC Biol 2022; 20:32. [PMID: 35125118 PMCID: PMC8819951 DOI: 10.1186/s12915-022-01238-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 01/24/2022] [Indexed: 01/06/2023] Open
Abstract
Background The process of thrombus formation is thought to involve interactions between platelets and leukocytes. Leukocyte incorporation into growing thrombi has been well established in vivo, and a number of properties of platelet-leukocyte interactions critical for thrombus formation have been characterized in vitro in thromboinflammatory settings and have clinical relevance. Leukocyte activity can be impaired in distinct hereditary and acquired disorders of immunological nature, among which is Wiskott-Aldrich Syndrome (WAS). However, a more quantitative characterization of leukocyte behavior in thromboinflammatory conditions has been hampered by lack of approaches for its study ex vivo. Here, we aimed to develop an ex vivo model of thromboinflammation, and compared granulocyte behavior of WAS patients and healthy donors. Results Thrombus formation in anticoagulated whole blood from healthy volunteers and patients was visualized by fluorescent microscopy in parallel-plate flow chambers with fibrillar collagen type I coverslips. Moving granulocytes were observed in hirudinated or sodium citrate-recalcified blood under low wall shear rate conditions (100 s−1). These cells crawled around thrombi in a step-wise manner with an average velocity of 90–120 nm/s. Pre-incubation of blood with granulocyte priming agents lead to a significant decrease in mean-velocity of the cells and increase in the number of adherent cells. The leukocytes from patients with WAS demonstrated a 1.5-fold lower mean velocity, in line with their impaired actin polymerization. It is noteworthy that in an experimental setting where patients’ platelets were replaced with healthy donor’s platelets the granulocytes’ crawling velocity did not change, thus proving that WASP (WAS protein) deficiency causes disruption of granulocytes’ behavior. Thereby, the observed features of granulocytes crawling are consistent with the neutrophil chemotaxis phenomenon. As most of the crawling granulocytes carried procoagulant platelets teared from thrombi, we propose that the role of granulocytes in thrombus formation is that of platelet scavengers. Conclusions We have developed an ex vivo experimental model applicable for observation of granulocyte activity in thrombus formation. Using the proposed setting, we observed a reduction of motility of granulocytes of patients with WAS. We suggest that our ex vivo approach should be useful both for basic and for clinical research. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-022-01238-x.
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92
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Zhang Y, Wang Y, Ding J, Liu P. Efferocytosis in multisystem diseases (Review). Mol Med Rep 2022; 25:13. [PMID: 34779503 PMCID: PMC8600411 DOI: 10.3892/mmr.2021.12529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/15/2021] [Indexed: 01/22/2023] Open
Abstract
Efferocytosis, the phagocytosis of apoptotic cells performed by both specialized phagocytes (such as macrophages) and non‑specialized phagocytes (such as epithelial cells), is involved in tissue repair and homeostasis. Effective efferocytosis prevents secondary necrosis, terminates inflammatory responses, promotes self‑tolerance and activates pro‑resolving pathways to maintain homeostasis. When efferocytosis is impaired, apoptotic cells that could not be cleared in time aggregate, resulting in the necrosis of apoptotic cells and release of pro‑inflammatory factors. In addition, defective efferocytosis inhibits the intracellular cholesterol reverse transportation pathways, which may lead to atherosclerosis, lung damage, non‑alcoholic fatty liver disease and neurodegenerative diseases. The uncleared apoptotic cells can also release autoantigens, which can cause autoimmune diseases. Cancer cells escape from phagocytosis via efferocytosis. Therefore, new treatment strategies for diseases related to defective efferocytosis are proposed. This review illustrated the mechanisms of efferocytosis in multisystem diseases and organismal homeostasis and the pathophysiological consequences of defective efferocytosis. Several drugs and treatments available to enhance efferocytosis are also mentioned in the review, serving as new evidence for clinical application.
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Affiliation(s)
- Yifan Zhang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
- Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Yiru Wang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
- Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Jie Ding
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
- Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Ping Liu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
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Martin-Rodriguez O, Gauthier T, Bonnefoy F, Couturier M, Daoui A, Chagué C, Valmary-Degano S, Gay C, Saas P, Perruche S. Pro-Resolving Factors Released by Macrophages After Efferocytosis Promote Mucosal Wound Healing in Inflammatory Bowel Disease. Front Immunol 2021; 12:754475. [PMID: 35003066 PMCID: PMC8727348 DOI: 10.3389/fimmu.2021.754475] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/06/2021] [Indexed: 12/21/2022] Open
Abstract
Nonresolving inflammation is a critical driver of several chronic inflammatory diseases, including inflammatory bowel diseases (IBD). This unresolved inflammation may result from the persistence of an initiating stimulus or from the alteration of the resolution phase of inflammation. Elimination of apoptotic cells by macrophages (a process called efferocytosis) is a critical step in the resolution phase of inflammation. Efferocytosis participates in macrophage reprogramming and favors the release of numerous pro-resolving factors. These pro-resolving factors exert therapeutic effects in experimental autoimmune arthritis. Here, we propose to evaluate the efficacy of pro-resolving factors produced by macrophages after efferocytosis, a secretome called SuperMApo, in two IBD models, namely dextran sodium sulfate (DSS)-induced and T cell transfer-induced colitis. Reintroducing these pro-resolving factors was sufficient to decrease clinical, endoscopic and histological colitis scores in ongoing naive T cell-transfer-induced colitis and in DSS-induced colitis. Mouse primary fibroblasts isolated from the colon demonstrated enhanced healing properties in the presence of SuperMApo, as attested by their increased migratory, proliferative and contractive properties. This was confirmed by the use of human fibroblasts isolated from patients with IBD. Exposure of an intestinal epithelial cell (IEC) line to these pro-resolving factors increased their proliferative properties and IEC acquired the capacity to capture apoptotic cells. The improvement of wound healing properties induced by SuperMApo was confirmed in vivo in a biopsy forceps-wound colonic mucosa model. Further in vivo analysis in naive T cell transfer-induced colitis model demonstrated an improvement of intestinal barrier permeability after administration of SuperMApo, an intestinal cell proliferation and an increase of α-SMA expression by fibroblasts, as well as a reduction of the transcript coding for fibronectin (Fn1). Finally, we identified TGF-β, IGF-I and VEGF among SuperMApo as necessary to favor mucosal healing and confirmed their role both in vitro (using neutralizing antibodies) and in vivo by depleting these factors from efferocytic macrophage secretome using antibody-coated microbeads. These growth factors only explained some of the beneficial effects induced by factors released by efferocytic macrophages. Overall, the administration of pro-resolving factors released by efferocytic macrophages limits intestinal inflammation and enhance tissue repair, which represents an innovative treatment of IBD.
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Affiliation(s)
- Omayra Martin-Rodriguez
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
| | - Thierry Gauthier
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
| | - Francis Bonnefoy
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
- MED’INN’Pharma, Besançon, France
| | - Mélanie Couturier
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
- MED’INN’Pharma, Besançon, France
| | - Anna Daoui
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
| | - Cécile Chagué
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
| | | | - Claire Gay
- Department of Gastroenterology, University Hospital of Besançon, Besançon, France
| | - Philippe Saas
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
| | - Sylvain Perruche
- Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098 RIGHT, Interactions Hôte-Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire INCREASE, LabEx LipSTIC, Besançon, France
- MED’INN’Pharma, Besançon, France
- *Correspondence: Sylvain Perruche,
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94
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Adamus G. Importance of Autoimmune Responses in Progression of Retinal Degeneration Initiated by Gene Mutations. Front Med (Lausanne) 2021; 8:672444. [PMID: 34926479 PMCID: PMC8674421 DOI: 10.3389/fmed.2021.672444] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 11/01/2021] [Indexed: 12/13/2022] Open
Abstract
Inherited retinal diseases (IRDs) are clinically and genetically heterogeneous rare disorders associated with retinal dysfunction and death of retinal photoreceptor cells, leading to blindness. Among the most frequent and severe forms of those retinopathies is retinitis pigmentosa (RP) that affects 1:4,000 individuals worldwide. The genes that have been implicated in RP are associated with the proteins present in photoreceptor cells or retinal pigment epithelium (RPE). Asymmetric presentation or sudden progression in retinal disease suggests that a gene mutation alone might not be responsible for retinal degeneration. Immune responses could directly target the retina or be site effect of immunity as a bystander deterioration. Autoantibodies against retinal autoantigens have been found in RP, which led to a hypothesis that autoimmunity could be responsible for the progression of photoreceptor cell death initiated by a genetic mutation. The other contributory factor to retinal degeneration is inflammation that activates the innate immune mechanisms, such as complement. If autoimmune responses contribute to the progression of retinopathy, this could have an implication on treatment, such as gene replacement therapy. In this review, we provide a perspective on the current role of autoimmunity/immunity in RP pathophysiology.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, United States
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95
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Chun SY, Ha YS, Yoon BH, Lee EH, Kim BM, Gil H, Han MH, Kwon TG, Kim BS, Lee JN. Optimal delipidation solvent to secure extracellular matrix from human perirenal adipose tissue. J Biomed Mater Res A 2021; 110:928-942. [PMID: 34913580 DOI: 10.1002/jbm.a.37341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/02/2021] [Accepted: 11/28/2021] [Indexed: 11/10/2022]
Abstract
The objective of this study was to select the optimal delipidation solvent for preparation of human perirenal adipose tissue-derived extracellular matrix (ECM). Human perirenal adipose tissue can be obtained in large amounts during surgery, and it can be an alternative source of human ECM. Delipidation is an essential procedure for the ECM preparation, because lipid strongly inhibits regeneration of target tissue. Isopropanol has been widely used as a delipidation solvent for adipose tissue. However, because adipose tissue is mostly composed of nonpolar lipid, a nonpolar solvent might be more effective for delipidation. We evaluated the delipidation efficiency of acetone, chloroform, methanol, ether, ethanol, isopropanol, water, chloroform/methanol, ethanol/heptane, ether/methanol, hexane/ethanol, and butanol/methanol solvents for ECM extraction from human perirenal adipose tissue. Among them, acetone-treated adipose tissue showed the greatest delipidation efficiency (93.05%), significantly lower residual DNA content, and the greatest residual collagen concentration (42.49 ± 0.05 μg/g). In addition, acetone-treated tissue also had well-preserved ultrastructure with high porosity and significantly low in vitro cytotoxicity. These results suggested that acetone may be an optimal delipidation solvent for extraction of ECM from human perirenal adipose tissue.
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Affiliation(s)
- So Young Chun
- BioMedical Research Institute, Kyungpook National University Hospital, Daegu, South Korea
| | - Yun-Sok Ha
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, South Korea
| | - Bo Hyun Yoon
- Joint Institute of Regenerative Medicine, Kyungpook National University, Daegu, South Korea
| | - Eun Hye Lee
- Joint Institute of Regenerative Medicine, Kyungpook National University, Daegu, South Korea
| | - Bo Mi Kim
- BioMedical Research Institute, Kyungpook National University Hospital, Daegu, South Korea
| | - Haejung Gil
- BioMedical Research Institute, Kyungpook National University Hospital, Daegu, South Korea
| | - Man-Hoon Han
- Joint Institute of Regenerative Medicine, Kyungpook National University, Daegu, South Korea
| | - Tae Gyun Kwon
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, South Korea
| | - Bum Soo Kim
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Jun Nyung Lee
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, South Korea
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96
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Reuter S, Kentrup D, Grabner A, Köhler G, Buscher K, Edemir B. C4d Deposition after Allogeneic Renal Transplantation in Rats Is Involved in Initial Apoptotic Cell Clearance. Cells 2021; 10:3499. [PMID: 34944007 PMCID: PMC8700759 DOI: 10.3390/cells10123499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/07/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
In the context of transplantation, complement activation is associated with poor prognosis and outcome. While complement activation in antibody-mediated rejection is well-known, less is known about complement activation in acute T cell-mediated rejection (TCMR). There is increasing evidence that complement contributes to the clearance of apoptotic debris and tissue repair. In this regard, we have analysed published human kidney biopsy transcriptome data clearly showing upregulated expression of complement factors in TCMR. To clarify whether and how the complement system is activated early during acute TCMR, experimental syngeneic and allogeneic renal transplantations were performed. Using an allogeneic rat renal transplant model, we also observed upregulation of complement factors in TCMR in contrast to healthy kidneys and isograft controls. While staining for C4d was positive, staining with a C3d antibody showed no C3d deposition. FACS analysis of blood showed the absence of alloantibodies that could have explained the C4d deposition. Gene expression pathway analysis showed upregulation of pro-apoptotic factors in TCMR, and apoptotic endothelial cells were detected by ultrastructural analysis. Monocytes/macrophages were found to bind to and phagocytise these apoptotic cells. Therefore, we conclude that early C4d deposition in TCMR may be relevant to the clearance of apoptotic cells.
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Affiliation(s)
- Stefan Reuter
- Department of Internal Medicine D, Experimental Nephrology, University Clinics Münster, 48143 Münster, Germany; (S.R.); (D.K.); (A.G.); (K.B.)
| | - Dominik Kentrup
- Department of Internal Medicine D, Experimental Nephrology, University Clinics Münster, 48143 Münster, Germany; (S.R.); (D.K.); (A.G.); (K.B.)
- Department of Medicine, Division of Nephrology, The University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Alexander Grabner
- Department of Internal Medicine D, Experimental Nephrology, University Clinics Münster, 48143 Münster, Germany; (S.R.); (D.K.); (A.G.); (K.B.)
- Department of Medicine, Division of Nephrology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Gabriele Köhler
- Gerhard Domagk Institute of Pathology, University Clinics Münster, 48143 Münster, Germany;
| | - Konrad Buscher
- Department of Internal Medicine D, Experimental Nephrology, University Clinics Münster, 48143 Münster, Germany; (S.R.); (D.K.); (A.G.); (K.B.)
| | - Bayram Edemir
- Department of Internal Medicine D, Experimental Nephrology, University Clinics Münster, 48143 Münster, Germany; (S.R.); (D.K.); (A.G.); (K.B.)
- Department of Medicine, Hematology and Oncology, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
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97
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Perez-Hernandez J, Chiurchiù V, Perruche S, You S. Regulation of T-Cell Immune Responses by Pro-Resolving Lipid Mediators. Front Immunol 2021; 12:768133. [PMID: 34868025 PMCID: PMC8635229 DOI: 10.3389/fimmu.2021.768133] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/26/2021] [Indexed: 12/31/2022] Open
Abstract
Both the initiation and the resolution of inflammatory responses are governed by the sequential activation, migration, and control/suppression of immune cells at the site of injury. Bioactive lipids play a major role in the fine-tuning of this dynamic process in a timely manner. During inflammation and its resolution, polymorphonuclear cells (PMNs) and macrophages switch from producing pro-inflammatory prostaglandins and leukotrienes to specialized pro-resolving lipid mediators (SPMs), namely, lipoxins, resolvins, protectins, and maresins, which are operative at the local level to limit further inflammation and tissue injury and restore homeostasis. Accumulating evidences expand now the role and actions of these lipid mediators from innate to adaptive immunity. In particular, SPMs have been shown to contribute to the control of chronic inflammation, and alterations in their production and/or function have been associated with the persistence of several pathological conditions, including autoimmunity, in human and experimental models. In this review, we focus on the impact of pro-resolving lipids on T cells through their ability to modulate T-cell responses. In particular, the effects of the different families of SPMs to restrain effector T-cell functions while promoting regulatory T cells will be reviewed, along with the underlying mechanisms. Furthermore, the emerging concept of SPMs as new biological markers for disease diagnostic and progression and as putative therapeutic tools to regulate the development and magnitude of inflammatory and autoimmune diseases is discussed.
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Affiliation(s)
- Javier Perez-Hernandez
- Université de Paris, Institut Cochin, CNRS, Institut National de la Santé et de le Recherche Médicale (INSERM), Paris, France.,Departament of Nutrition and Health, Valencian International University (VIU), Valencia, Spain
| | - Valerio Chiurchiù
- Institute of Translational Pharmacology, National Research Council, Rome, Italy.,Laboratory of Resolution of Neuroinflammation, European Center for Brain Research, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Santa Lucia Foundation, Rome, Italy
| | - Sylvain Perruche
- Université de Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang (EFS) Bourgogne-Franche Comté (BFC), Unité Mixte de Recherche (UMR)1098 Research on Interaction between Graft, Host and Tumor (RIGHT), Interactions Hôte Greffon-Tumeur/Ingénierie Cellulaire et Génique, Fédération Hospitalo-Universitaire Integrated Center for REsearch in inflammatory diseASes (InCREASe), Besançon, France.,MED'INN'Pharma, Besançon, France
| | - Sylvaine You
- Université de Paris, Institut Cochin, CNRS, Institut National de la Santé et de le Recherche Médicale (INSERM), Paris, France
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98
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Toita R, Kawano T, Murata M, Kang JH. Bioinspired macrophage-targeted anti-inflammatory nanomedicine: A therapeutic option for the treatment of myocarditis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112492. [PMID: 34857278 DOI: 10.1016/j.msec.2021.112492] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/29/2021] [Accepted: 10/11/2021] [Indexed: 12/15/2022]
Abstract
Myocarditis is a disease characterized by inflammation of the heart muscle, which increases the risk of dilated cardiomyopathy and heart failure. Macrophage migration is a major histopathological hallmark of myocarditis, making macrophages a potential therapeutic target for the management of this disease. In the present study, we synthesized a bioinspired anti-inflammatory nanomedicine conjugated with protein G (PSL-G) that could target macrophages and induce macrophage polarization from the pro-inflammatory M1 phenotype to the anti-inflammatory M2 phenotype. Notably, PSL-G exhibited a higher affinity for macrophages than non-macrophage cells. The addition of PSL-G decreased the levels of pro-inflammatory cytokines (e.g., IL-1α, IL-6, and TNF-α), but increased the level of the anti-inflammatory cytokine IL-10 in macrophages treated with lipopolysaccharide and/or interferon-γ. Furthermore, the lifetime of PSL-G in murine blood circulation was found to be significantly higher than that of PSL. Systemic injection of PSL-G into a mouse model of experimental autoimmune myocarditis remarkably reduced macrophage migration in the myocardium (16-fold compared with the positive control group) and myocardial fibrosis (8-fold). Based on these results and the fact that macrophages play a critical role in the pathogenesis of various diseases, we believe that bioinspired macrophage-targeted anti-inflammatory nanomedicines may be effective therapeutic options for the treatment of autoimmune and autoinflammatory diseases, especially myocarditis.
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Affiliation(s)
- Riki Toita
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan; AIST-Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory, AIST, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Takahito Kawano
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masaharu Murata
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Jeong-Hun Kang
- Division of Biopharmaceutics and Pharmacokinetics, National Cerebral and Cardiovascular Center Research Institute, 6-1 Shinmachi, Kishibe, Suita, Osaka 564-8565, Japan.
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99
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Zhao J, Zhang W, Wu T, Wang H, Mao J, Liu J, Zhou Z, Lin X, Yan H, Wang Q. Efferocytosis in the Central Nervous System. Front Cell Dev Biol 2021; 9:773344. [PMID: 34926460 PMCID: PMC8678611 DOI: 10.3389/fcell.2021.773344] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/25/2021] [Indexed: 11/23/2022] Open
Abstract
The effective clearance of apoptotic cells is essential for maintaining central nervous system (CNS) homeostasis and restoring homeostasis after injury. In most cases of physiological apoptotic cell death, efferocytosis prevents inflammation and other pathological conditions. When apoptotic cells are not effectively cleared, destruction of the integrity of the apoptotic cell membrane integrity, leakage of intracellular contents, and secondary necrosis may occur. Efferocytosis is the mechanism by which efferocytes quickly remove apoptotic cells from tissues before they undergo secondary necrosis. Cells with efferocytosis functions, mainly microglia, help to eliminate apoptotic cells from the CNS. Here, we discuss the impacts of efferocytosis on homeostasis, the mechanism of efferocytosis, the associations of efferocytosis failure and CNS diseases, and the current clinical applications of efferocytosis. We also identify efferocytosis as a novel potential target for exploring the causes and treatments of CNS diseases.
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Affiliation(s)
- Jiayi Zhao
- Department of Anesthesia, Zhejiang Hospital, Hangzhou, China
| | - Weiqi Zhang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Tingting Wu
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Hongyi Wang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Jialiang Mao
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Jian Liu
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ziheng Zhou
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Xianfeng Lin
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Huige Yan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qingqing Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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100
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Wan J, Yuan L, Jing H, Zheng Q, Xiao H. Defective apoptotic cell clearance activates innate immune response to protect Caenorhabditis elegans against pathogenic bacteria. Virulence 2021; 12:75-83. [PMID: 33372828 PMCID: PMC7781629 DOI: 10.1080/21505594.2020.1857982] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/01/2020] [Accepted: 11/21/2020] [Indexed: 12/25/2022] Open
Abstract
Appropriate clearance of dead cells generated by apoptosis is critical to the development of multicellular organisms and tissue homeostasis. In mammals, the removal of apoptotic cell is mediated by polarized monocyte/macrophage populations of the innate immune system. The innate immune system is essential for anti-viral and anti-microbial defense. However, our current understanding of the relationship between apoptotic cell clearance and the innate immune response has remained rather limited. Here, we study how apoptotic cell clearance programs contribute to the innate immune response in C. elegans. We find apoptotic cell clearance mutant worms are more resistant to pathogenic bacteria of Pseudomonas aeruginosa PA14 and Salmonella typhimurium SL1344 due to significant upregulation of innate immune-dependent pathogen response genes. In addition, genetic epistasis analysis indicates that defects in apoptotic cell clearance can activate the innate immune response through PMK-1 p38 MAPK and MPK-1/ERK MAPK pathways in C. elegans. Taken together, our results provide evidence that insufficient clearance of apoptotic cell can protect Caenorhabditis elegans from bacterial infection through innate immune response activation.
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Affiliation(s)
- Jinlong Wan
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Lei Yuan
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Huiru Jing
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Qian Zheng
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Hui Xiao
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
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