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Noor AAM, Nor AKCM, Redzwan NM. The immunological understanding on germinal center B cells in psoriasis. J Cell Physiol 2024. [PMID: 38578060 DOI: 10.1002/jcp.31266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/16/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024]
Abstract
The development of psoriasis is mainly driven by the dysregulation of T cells within the skin, marking a primary involvement of these cells in the pathogenesis. Although B cells are integral components of the immune system, their role in the initiation and progression of psoriasis is not as pivotal as that of T cells. The paradox of B cell suggests that, while it is crucial for adaptive immunity, B cells may contribute to the exacerbation of psoriasis. Numerous ideas proposed that there are potential relationships between psoriasis and B cells especially within germinal centers (GCs). Recent research projected that B cells might be triggered by autoantigens which then induced molecular mimicry to alter B cells activity within GC and generate autoantibodies and pro-inflammatory cytokines, form ectopic GC, and dysregulate the proliferation of keratinocytes. Hence, in this review, we gathered potential evidence indicating the participation of B cells in psoriasis within the context of GC, aiming to enhance our comprehension and advance treatment strategies for psoriasis thus inviting many new researchers to investigate this issue.
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Affiliation(s)
- Aina Akmal Mohd Noor
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Abdah Karimah Che Md Nor
- Central Research Laboratory, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Norhanani Mohd Redzwan
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Mizote Y, Inoue T, Akazawa T, Kunimasa K, Tamiya M, Kumamoto Y, Tsuda A, Yoshida S, Tatsumi K, Ekawa T, Honma K, Nishino K, Tahara H. Potent CTLs can be induced against tumor cells in an environment of lower levels of systemic MFG-E8. Cancer Sci 2024; 115:1114-1128. [PMID: 38332689 PMCID: PMC11007000 DOI: 10.1111/cas.16099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 12/19/2023] [Accepted: 01/22/2024] [Indexed: 02/10/2024] Open
Abstract
The direction and magnitude of immune responses are critically affected when dead cells are disposed of. Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) promotes the engulfment of apoptotic normal and cancerous cells without inducing inflammation. We have previously reported that a certain proportion of the cancer cells express abundant MFG-E8, and that such expression is associated with the shorter survival of patients with esophageal cancer who had received chemotherapy before surgery. However, the influence of tumor-derived and systemically existing MFG-E8 on antitumor immune responses has not yet been fully investigated. Herein, we showed that CTL-dependent antitumor immune responses were observed in mice with no or decreased levels of systemic MFG-E8, and that such responses were enhanced further with the administration of anti-PD-1 antibody. In mice with decreased levels of systemic MFG-E8, the dominance of regulatory T cells in tumor-infiltrating lymphocytes was inverted to CD8+ T cell dominance. MFG-E8 expression by tumor cells appears to affect antitumor immune responses only when the level of systemic MFG-E8 is lower than the physiological status. We have also demonstrated in the clinical setting that lower levels of plasma MFG-E8, but not MFG-E8 expression in tumor cells, before the treatment was associated with objective responses to anti-PD-1 therapy in patients with non-small cell lung cancer. These results suggest that systemic MFG-E8 plays a critical role during the immunological initiation process of antigen-presenting cells to increase tumor-specific CTLs. Regulation of the systemic level of MFG-E8 might induce efficient antitumor immune responses and enhance the potency of anti-PD-1 therapy.
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Affiliation(s)
- Yu Mizote
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Takako Inoue
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Takashi Akazawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Kei Kunimasa
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Motohiro Tamiya
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Yachiyo Kumamoto
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Arisa Tsuda
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Satomi Yoshida
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Kumiko Tatsumi
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Tomoya Ekawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Keiichiro Honma
- Department of Diagnostic Pathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Kazumi Nishino
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Hideaki Tahara
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical ScienceThe University of TokyoTokyoJapan
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Hu Y, Wu X, Zhou L, Liu J. Which is the optimal choice for neonates' formula or breast milk? NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:21. [PMID: 38488905 PMCID: PMC10942964 DOI: 10.1007/s13659-024-00444-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/28/2024] [Indexed: 03/17/2024]
Abstract
The incidence of prematurity has been increasing since the twenty-first century. Premature neonates are extremely vulnerable and require a rich supply of nutrients, including carbohydrates, proteins, docosahexaenoic acid (DHA), arachidonic acid (ARA) and others. Typical breast milk serves as the primary source for infants under six months old to provide these nutrients. However, depending on the individual needs of preterm infants, a more diverse and intricate range of nutrients may be necessary. This paper provides a comprehensive review of the current research progress on the physical and chemical properties, biological activity, function, and structure of breast milk, as well as explores the relationship between the main components of milk globular membrane and infant growth. Additionally, compare the nutritional composition of milk from different mammals and newborn milk powder, providing a comprehensive understanding of the differences in milk composition and detailed reference for meeting daily nutritional needs during lactation.
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Affiliation(s)
- Yueqi Hu
- National Demonstration Center for Experimental Ethnopharmacology Education, School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan, 430074, People's Republic of China
| | - Xing Wu
- National Demonstration Center for Experimental Ethnopharmacology Education, School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan, 430074, People's Republic of China
| | - Li Zhou
- National Demonstration Center for Experimental Ethnopharmacology Education, School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan, 430074, People's Republic of China.
| | - Jikai Liu
- National Demonstration Center for Experimental Ethnopharmacology Education, School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan, 430074, People's Republic of China.
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Vongsakulpaisarn P, Sangkhamanee SS, Rassameemasmaung S, Sritanaudomchai H. Effect of Periodontal Ligament Stem Cells-Derived Conditioned Medium on Gene Expression and Differentiation of Tumor Necrosis Factor-α-Challenged Osteoblasts. Eur J Dent 2024; 18:378-386. [PMID: 37562430 PMCID: PMC10959631 DOI: 10.1055/s-0043-1771337] [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: 08/12/2023] Open
Abstract
OBJECTIVES Tumor necrosis factor-α (TNF-α) causes bone resorption in periodontitis. It induces the production of receptor activator of NF-κB ligand (RANKL) from osteoblasts, leading to the disturbance of bone homeostasis through RANKL, RANK, and osteoprotegerin (OPG) axis. This study aimed to explore the effect of periodontal ligament stem cells-derived conditioned medium (PDLSCs-CM) on gene expression related to bone homeostasis and the differentiation of TNF-α-challenged osteoblasts. MATERIALS AND METHODS Human osteoblasts were cultured with 50 ng/mL of TNF-α and 0, 1, 10, and 100 µg/ mL of PDLSCs-CM. Osteoblasts cultured without TNF-α and PDLSCs-CM were served as control. Gene expression of RANKL, OPG, and interleukin-1β (IL-1β) was evaluated by reverse transcription quantitative polymerase chain reaction at 48 hours. The early-stage and late-stage differentiation of TNF-α-challenged osteoblasts without or with PDLSCs-CM was explored by alkaline phosphatase (ALP) activity and alizarin red staining, respectively, at day 1, 3, 6, 9, and 12. STATISTICAL ANALYSIS Mann-Whitney U test was used to analyze the differences in gene expression of TNF-α-challenged osteoblasts at 24 and 48 hours, and Kruskal-Wallis test was used to analyze the effect of PDLSCs-CM on gene expression and ALP activity among all experimental groups using SPSS software version 21.0. Statistical significance was considered with p-value less than 0.05. RESULTS Expression of RANKL, OPG and IL-1β was significantly upregulated in TNF-α-challenged osteoblasts compared to the untreated control. The PDLSCs-CM at 1 and 10 μg/mL downregulated gene expression of TNF-α-challenged osteoblasts compared to the group without PDLSCs-CM, but the difference did not reach statistical significance. The ALP activity was decreased in TNF-α-challenged osteoblasts. The addition of PDLSCs-CM did not alter ALP activity of TNF-α-challenged osteoblasts. Alizarin red staining was comparable in the TNF-α-challenged osteoblasts cultured without or with PDLSCs-CM. CONCLUSIONS The PDLSCs-CM did not alter gene expression involved in bone homeostasis and differentiation of TNF-α-challenged osteoblasts.
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Affiliation(s)
- Poranee Vongsakulpaisarn
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | | | - Supanee Rassameemasmaung
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
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Li Y, Qiu J, Meng Z, Yin S, Ruan M, Zhang W, Wu Z, Ding T, Huang F, Wang W. MFG-E8 promotes M2 polarization of macrophages and is associated with poor prognosis in patients with gastric cancer. Heliyon 2024; 10:e23917. [PMID: 38192793 PMCID: PMC10772258 DOI: 10.1016/j.heliyon.2023.e23917] [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: 08/10/2023] [Revised: 12/10/2023] [Accepted: 12/15/2023] [Indexed: 01/10/2024] Open
Abstract
Background Milk Fat Globule-Epidermal Growth Factor 8 (MFG-E8) has been reported to play an oncogenic role in a variety of tumors. However, its involvement in gastric cancer (GC) development has not been described. Methods The cancer genome atlas (TCGA) and the gene expression omnibus database (GEO) databases were used to analyze the expression of MFG-E8 in GC. These findings were further validated using immunohistochemistry (IHC) and western blotting assay (WB). Kaplan-Meier method, univariate logistic regression, and Christopher Cox regression were used to study the relationship between MFG-E8 and clinical pathology. In addition, the potential signaling pathways involved in MFG-E8 and its potential correlation with levels of immune cell infiltration were investigated. Finally, the biological function of MFG-E8 in GC cells was revealed. Results MFG-E8 was highly expressed in GC patients and cells, and the high level of MFG-E8 was associated with poor overall survival (OS). KEGG analysis indicated that MFG-E8 may play an important role in the cAMP signaling pathway. The expression of MFG-E8 was positively correlated with the infiltration of M2 macrophages. The patients with high MFG-E8 were easy to develop chemotherapy resistance. Furthermore, the knockdown of MFG-E8 significantly inhibited the proliferation and invasion of GC cells. Conclusion MFG-E8 in GC may serve as a prognostic marker and a potential immunotherapy target for GC.
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Affiliation(s)
- Yang Li
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Jianda Qiu
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Ziyu Meng
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Shiyuan Yin
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Mingxuan Ruan
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Wenbiao Zhang
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Zhiwei Wu
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Tao Ding
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Fei Huang
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Wenbin Wang
- Department of Surgery, The First Affiliated Hospital of Anhui Medical University, Anhui Public Health Clinical Center, Hefei, People's Republic of China
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Ding P, Liu J, Meng Y, Wang H, Huang Y, Su G, Xia C, Du X, Dong N, Cui T, Zhang J, Li J. MFG-E8 facilitates heart repair through M1/M2 polarization after myocardial infarction by inhibiting CaMKII. Int Immunopharmacol 2024; 126:111216. [PMID: 37977072 DOI: 10.1016/j.intimp.2023.111216] [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: 07/14/2023] [Revised: 10/01/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND M1/M2 macrophage polarization affects patient outcomes after myocardial infarction (MI). The relationship between milk fat globule-epidermal growth factor 8 (MFG-E8) and Ca2+/calmodulin-dependent protein kinase II (CaMKII) on macrophage polarization after MI is unknown. To investigate the functional role of MFG-E8 in modulating cardiac M1/M2 macrophage polarization after MI, especially its influence on CaMKII signaling. METHODS Human ventricular tissue and blood were obtained from patients with MI and controls. MFG-E8-KO mice were constructed (C57BL/6). The mice were randomized to WT-sham, sham-MFG-E8-KO, WT-PBS, rmMFG-E8 (WT injected with rmMFG-E8 10 min after MI), and MFG-E8-KO. The mouse macrophage cell line RAW264.7 was obtained. CaMKII, p-CaMKII, Akt, and NF-κB p65 were determined by qRT-PCR, western blot, and immunofluorescence. RESULTS The MFG-E8 levels were significantly enhanced after MI in the hearts and plasma of patients with MI compared with controls. The MFG-E8 levels were significantly increased in the hearts and plasma of mice after MI. MFG-E8 was derived from cardiac fibroblasts. The administration of rmMFG-E8 improved ventricular remodeling and cardiac function after MI. rmMFG-E8 did not suppress infiltrating monocyte/macrophages into the peri-infarct area. rmMFG-E8 suppressed the polarization of macrophages to the M1 phenotype and promoted the polarization of macrophages to the M2 phenotype. rmMFG-E8 suppressed CaMKII-dependent signaling in macrophages. CONCLUSIONS MFG-E8 and CaMKII appear to collaboratively regulate myocardial remodeling and M1/M2 macrophage polarization after MI. These observations suggest new roles for MFG-E8 in inhibiting M1 but promoting M2 macrophage polarization.
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Affiliation(s)
- Peiwu Ding
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jie Liu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yidi Meng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Department of Gerontology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hongfei Wang
- Department of Cardiac Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yun Huang
- Department of Gerontology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guanhua Su
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chaorui Xia
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xinling Du
- Department of Cardiac Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Nianguo Dong
- Department of Cardiac Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Tianpen Cui
- Department of Laboratory Medicine, Wuhan No.1 Hospital, Wuhan, Hubei 430022, China
| | - Jiaming Zhang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jingdong Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Ravindran MP, Geetha A, Rajendran S, Mahendra J, Jyothi M, Namasivayam A. Correlation of Serum and Gingival Crevicular Fluid Levels of Caspase-3 and Milk Fat Globule-Epidermal Growth Factor 8 on Gingival Health. Indian J Dent Res 2023; 34:359-364. [PMID: 38739812 DOI: 10.4103/ijdr.ijdr_62_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 09/08/2023] [Indexed: 05/16/2024] Open
Abstract
AIM This study aimed to estimate and correlate the serum and gingival crevicular fluid (GCF) levels of caspase-3 and milk fat globule-epidermal growth factor 8 (MFG-E8) in healthy, gingivitis and generalised chronic periodontitis subjects. MATERIALS AND METHODS A total of 24 subjects were selected and divided into three groups. After recording the periodontal parameters (plaque index (PI), modified gingival index (MGI), probing depth (PD) and clinical attachment level (CAL)), the serum and GCF samples were collected and the levels of caspase-3 and MFG-E8 were estimated using enzyme-linked immunoassay (ELISA). RESULTS The mean values of PI, MGI, PD and CALs were significantly higher in group III when compared to group II and group I. The mean value of serum and GCF caspase-3 increased with increasing disease severity, whereas the mean serum and GCF values of MFG-E8 decreased with increasing severity of disease. Spearman's correlation showed a strong positive correlation between the serum and GCF levels of caspase-3 and periodontal parameters, whereas serum and GCF levels of MFG-E8 showed a strong negative correlation with the periodontal parameters. CONCLUSION The findings of this study are suggestive that the serum and GCF levels of caspase-3 and MFG-E8 could serve as a potential biomarker for the role of apoptosis in periodontal disease. However, further studies are required to explore the mechanism and understand the relationship between these apoptotic markers and periodontitis.
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Affiliation(s)
- Manonmani Pavithra Ravindran
- Department of Periodontology, Meenakshi Ammal Dental College and Hospital, Maduravoyal, Chennai, Tamil Nadu, India
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Schneider K, Arandjelovic S. Apoptotic cell clearance components in inflammatory arthritis. Immunol Rev 2023; 319:142-150. [PMID: 37507355 PMCID: PMC10615714 DOI: 10.1111/imr.13256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease of the synovial joints that affects ~1% of the human population. Joint swelling and bone erosion, hallmarks of RA, contribute to disability and, sometimes, loss of life. Mechanistically, disease is driven by immune dysregulation characterized by circulating autoantibodies, inflammatory mediators, tissue degradative enzymes, and metabolic dysfunction of resident stromal and recruited immune cells. Cell death by apoptosis has been therapeutically explored in animal models of RA due to the comparisons drawn between synovial hyperplasia and paucity of apoptosis in RA with the malignant transformation of cancer cells. Several efforts to induce cell death have shown benefits in reducing the development and/or severity of the disease. Apoptotic cells are cleared by phagocytes in a process known as efferocytosis, which differs from microbial phagocytosis in its "immuno-silent," or anti-inflammatory, nature. Failures in efferocytosis have been linked to autoimmune disease, whereas administration of apoptotic cells in RA models effectively inhibits inflammatory indices, likely though efferocytosis-mediated resolution-promoting mechanisms. However, the nature of signaling pathways elicited and the molecular identity of clearance mediators in RA are understudied. Furthermore, canonical efferocytosis machinery elements also play important non-canonical functions in homeostasis and pathology. Here, we discuss the roles of efferocytosis machinery components in models of RA and discuss their potential involvement in disease pathophysiology.
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Affiliation(s)
- Kevin Schneider
- University of Virginia, Center for Immunity, Inflammation and Regenerative Medicine, Department of Medicine, Charlottesville, VA, USA
| | - Sanja Arandjelovic
- University of Virginia, Center for Immunity, Inflammation and Regenerative Medicine, Department of Medicine, Charlottesville, VA, USA
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Rodríguez-Giraldo M, González-Reyes RE, Ramírez-Guerrero S, Bonilla-Trilleras CE, Guardo-Maya S, Nava-Mesa MO. Astrocytes as a Therapeutic Target in Alzheimer's Disease-Comprehensive Review and Recent Developments. Int J Mol Sci 2022; 23:13630. [PMID: 36362415 PMCID: PMC9654484 DOI: 10.3390/ijms232113630] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 09/20/2023] Open
Abstract
Alzheimer's disease (AD) is a frequent and disabling neurodegenerative disorder, in which astrocytes participate in several pathophysiological processes including neuroinflammation, excitotoxicity, oxidative stress and lipid metabolism (along with a critical role in apolipoprotein E function). Current evidence shows that astrocytes have both neuroprotective and neurotoxic effects depending on the disease stage and microenvironmental factors. Furthermore, astrocytes appear to be affected by the presence of amyloid-beta (Aβ), with alterations in calcium levels, gliotransmission and proinflammatory activity via RAGE-NF-κB pathway. In addition, astrocytes play an important role in the metabolism of tau and clearance of Aβ through the glymphatic system. In this review, we will discuss novel pharmacological and non-pharmacological treatments focused on astrocytes as therapeutic targets for AD. These interventions include effects on anti-inflammatory/antioxidant systems, glutamate activity, lipid metabolism, neurovascular coupling and glymphatic system, calcium dysregulation, and in the release of peptides which affects glial and neuronal function. According to the AD stage, these therapies may be of benefit in either preventing or delaying the progression of the disease.
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Affiliation(s)
| | | | | | | | | | - Mauricio O. Nava-Mesa
- Grupo de Investigación en Neurociencias (NeURos), Centro de Neurociencias Neurovitae-UR, Instituto de Medicina Traslacional (IMT), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111711, Colombia
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Ni L, Liu L, Zhu W, Telljohann R, Zhang J, Monticone RE, McGraw KR, Liu C, Morrell CH, Garrido-Gil P, Labandeira-Garcia JL, Lakatta EG, Wang M. Inflammatory Role of Milk Fat Globule-Epidermal Growth Factor VIII in Age-Associated Arterial Remodeling. J Am Heart Assoc 2022; 11:e022574. [PMID: 36000422 PMCID: PMC9496444 DOI: 10.1161/jaha.121.022574] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Age‐associated aortic remodeling includes a marked increase in intimal medial thickness (IMT), associated with signs of inflammation. Although aortic wall milk fat globule–epidermal growth factor VIII (MFG‐E8) increases with age, and is associated with aortic inflammation, it is not known whether MFG‐E8 is required for the age‐associated increase in aortic IMT. Here, we tested whether MFG‐E8 is required for the age‐associated increase in aortic IMT. Methods and Results To determine the role of MFG‐E8 in the age‐associated increase of IMT, we compared aortic remodeling in adult (20‐week) and aged (96‐week) MFG‐E8 (−/−) knockout and age matched wild‐type (WT) littermate mice. The average aortic IMT increased with age in the WT from 50±10 to 70±20 μm (P<0.0001) but did not significantly increase with age in MFG‐E8 knockout mice. Because angiotensin II signaling is implicated as a driver of age‐associated increase in IMT, we infused 30‐week‐old MFG‐E8 knockout and age‐matched littermate WT mice with angiotensin II or saline via osmotic mini‐pumps to determine whether MFG‐E8 is required for angiotensin II–induced aortic remodeling. (1) In WT mice, angiotensin II infusion substantially increased IMT, elastic lamina degradation, collagen deposition, and the proliferation of vascular smooth muscle cells; in contrast, these effects were significantly reduced in MFG‐E8 KO mice; (2) On a molecular level, angiotensin II treatment significantly increased the activation and expression of matrix metalloproteinase type 2, transforming growth factor beta 1, and its downstream signaling molecule phosphorylated mother against decapentaplegic homolog 2, and collagen type I production in WT mice; however, in the MFG‐E8 knockout mice, these molecular effects were significantly reduced; and (3) in WT mice, angiotensin II increased levels of aortic inflammatory markers phosphorylated nuclear factor‐kappa beta p65, monocyte chemoattractant protein 1, tumor necrosis factor alpha, intercellular adhesion molecule 1, and vascular cell adhesion molecule 1 molecular expression, while in contrast, these inflammatory markers did not change in knockout mice. Conclusions Thus, MFG‐E8 is required for both age‐associated proinflammatory aortic remodeling and also for the angiotensin II–dependent induction in younger mice of an aortic inflammatory phenotype observed in advanced age. Targeting MFG‐E8 would be a novel molecular approach to curb adverse arterial remodeling.
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Affiliation(s)
- Leng Ni
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD.,Department of Vascular Surgery, Peking Union Medical College Hospital Peking Union Medical College & Chinese Academy of Medical Sciences Beijing China
| | - Lijuan Liu
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Wanqu Zhu
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Richard Telljohann
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Jing Zhang
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Robert E Monticone
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Kimberly R McGraw
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Changwei Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital Peking Union Medical College & Chinese Academy of Medical Sciences Beijing China
| | - Christopher H Morrell
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Pablo Garrido-Gil
- Research Center for Molecular Medicine and Chronic Diseases (CIMUS), IDIS University of Santiago de Compostela Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED) Madrid Spain
| | - Jose Luis Labandeira-Garcia
- Research Center for Molecular Medicine and Chronic Diseases (CIMUS), IDIS University of Santiago de Compostela Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED) Madrid Spain
| | - Edward G Lakatta
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
| | - Mingyi Wang
- Laboratory of Cardiovascular Science, National Institution on Aging National Institutes of Health, Biomedical Research Center (BRC) Baltimore MD
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11
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Nagasaki K, Gavrilova O, Hajishengallis G, Somerman MJ. Does the RGD region of certain proteins affect metabolic activity? FRONTIERS IN DENTAL MEDICINE 2022. [DOI: 10.3389/fdmed.2022.974862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A better understanding of the role of mineralized tissues and their associated factors in governing whole-body metabolism should be of value toward informing clinical strategies to treat mineralized tissue and metabolic disorders, such as diabetes and obesity. This perspective provides evidence suggesting a role for the arginine-glycine-aspartic acid (RGD) region, a sequence identified in several proteins secreted by bone cells, as well as other cells, in modulating systemic metabolic activity. We focus on (a) two of the SIBLING (small integrin-binding ligand, N-linked glycoprotein) family genes/proteins, bone sialoprotein (BSP) and osteopontin (OPN), (b) insulin-like growth factor-binding protein-1 & 2 (IGFBP-1, IGFBP-2) and (c) developmental endothelial locus 1 (DEL1) and milk fat globule–EGF factor-8 (MFG-E8). In addition, for our readers to appreciate the mounting evidence that a multitude of bone secreted factors affect the activity of other tissues, we provide a brief overview of other proteins, to include fibroblast growth factor 23 (FGF23), phosphatase orphan 1 (PHOSPHO1), osteocalcin (OCN/BGLAP), tissue non-specific alkaline phosphatase (TNAP) and acidic serine aspartic-rich MEPE-associated motif (ASARM), along with known/suggested functions of these factors in influencing energy metabolism.
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12
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Beatty LA, Mansour KL, Bryant EJ, Garcia-Godoy FJ, Pantaleon DS, Sawatari Y, Huang CYC, Garcia-Godoy F. Chondroprotective Effects of Periodontal Ligament Derived Stem Cells Conditioned Medium on Articular Cartilage After Impact Injury. Stem Cells Dev 2022; 31:498-505. [PMID: 35730119 DOI: 10.1089/scd.2022.0130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Paracrine factors secreted in the conditioned media of periodontal ligament derived stem cells (PDLSCs) have been shown to downregulate inflammatory effects of IL-1β on chondrocytes wherein milk fat globule-epidermal growth factor 8 (MFG-E8) is one of the PDLSCs highly secretory proteins. Therefore, the objective of this study was to investigate the ability of PDLSC conditioned media (CM) and MFG-E8 to reduce the inflammatory effects of impact injury on porcine talar articular cartilage (AC) and IL-1β on chondrocytes, respectively. Stem cells were isolated from human periodontal ligaments. the MFG-E8 content in CM collected at 5% and 20% oxygen was measured by ELISA assay and compared across subcultures and donors. AC samples were divided into three groups: control, impact, and impact+CM. Chondrocytes were isolated from pig knees and were divided into three groups: control, IL-1β, and IL-1β+MFG-E8. Gene expression data was analyzed by RT-PCR. It was found that impact load and IL-1β treatment upregulated IL-1β, TNF-α, ADAMTS-4, and ADAMTS-5 gene expression in AC and chondrocytes, respectively. PDLSCs-CM prevented the upregulation of all four genes due to impact whereas MFG-E8 prevented upregulation of IL-1β, ADAMTS-4, and ADAMTS-5 in chondrocytes, but it did not prevent TNF-α upregulation. There were no significant differences in MFG-E8 content in CM among oxygen levels, passage numbers, or donors. The findings suggested that MFG-E8 is an effective anti-inflammatory agent contributing to the chondroprotective effects of PDLSCs-CM on acutely injured articular cartilage. Thus, introducing PDLSCs-CM to sites of acute traumatic AC injury could prevent the development of post-traumatic osteoarthritis.
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Affiliation(s)
- Logan Albert Beatty
- University of Miami - Coral Gables Campus, 5452, Biomedical Engineering, Coral Gables, Florida, United States;
| | - Kailey L Mansour
- University of Miami Miller School of Medicine, 12235, Miami, Florida, United States;
| | - Evan J Bryant
- University of Miami Miller School of Medicine, 12235, Miami, Florida, United States;
| | | | | | - Yoh Sawatari
- University of Miami Miller School of Medicine, 12235, Division of Oral and Maxillofacial Surgery, Miami, Florida, United States;
| | - Chun-Yuh Charles Huang
- University of Miami - Coral Gables Campus, 5452, Biomedical Engineering, Coral Gables, Florida, United States;
| | - Franklin Garcia-Godoy
- University of Tennessee Health Science Center, Bioscience Research, College of Dentistry, Memphis, Tennessee, United States;
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13
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Zhang Y, Ding J, Wang Y, Feng X, Du M, Liu P. Guanxinkang Decoction Attenuates the Inflammation in Atherosclerosis by Regulating Efferocytosis and MAPKs Signaling Pathway in LDLR -/- Mice and RAW264.7 Cells. Front Pharmacol 2021; 12:731769. [PMID: 34950025 PMCID: PMC8688952 DOI: 10.3389/fphar.2021.731769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/17/2021] [Indexed: 01/02/2023] Open
Abstract
Guanxinkang decoction (GXK), a traditional Chinese medicinal drug, is used to treat cardiovascular disease. The aim of the study was to investigate the effects of GXK on inflammation in LDLR−/− mice and RAW264.7 cells. Fed with high fat diet for 12 weeks, the mice were randomly divided into six groups, then administered with oral 0.9% saline or GXK (7.24, 14.48, and 28.96 g/kg) or Atorvastatin (1.3 mg/kg) for 12 weeks. RAW 264.7 cells were induced with ox-LDL or ox-LDL plus different concentrations of GXK (1.25, 2.5, and 5 μg/ml), or ox-LDL plus GXK plus MAPKs activators. Serum lipid profiles and inflammatory cytokines were detected by ELISA, gene expression by RT-qPCR, plaque sizes by Oil Red O, α-SMA, caspase 3, NF-κB p65 and TNF-α production by immunofluorescence staining, and protein expression by Western Blot. The phagocytic ability of cells was determined by neutral red uptake assay. Efferocytosis-related proteins (AML, MERTK, TYRO3 and MFGE8) and MAPKs pathways were detected by Western Blot. Compared to mice fed with high fat diet, the mice with GXK showed lower cholesterol, triglyceride, low-density lipoprotein cholesterol, IL-1β, IL-6, and TNF-α, smaller plaque sizes, higher α-SMA, and lower caspase 3 and NF-κB p65 in aortic roots. RAW264.7 cells treated with ox-LDL plus GXK had lower IL-1β, IL-6, and TNF-α. GXK also increased the phagocytic ability of cells. High levels of AML, MERTK, TYRO3 and MFGE8, and decreased levels of iNOS, VCAM-1, LOX-1 and MCP-1, and phosphorylation of ERK1/2, JNK, p38, and NF-κB were detected in GXK-treated group. MAPKs activators reversed the effects of GXK in repressing inflammation and promoting phagocytosis. These results suggested that GXK could attenuate atherosclerosis and resolve inflammation via efferocytosis and MAPKs signaling pathways in LDLR−/− mice and RAW264.7 cells.
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Affiliation(s)
- Yifan Zhang
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jie Ding
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yiru Wang
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoteng Feng
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Min Du
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ping Liu
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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14
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Cheng X, Zhou X, Liu C, Xu X. Oral Osteomicrobiology: The Role of Oral Microbiota in Alveolar Bone Homeostasis. Front Cell Infect Microbiol 2021; 11:751503. [PMID: 34869060 PMCID: PMC8635720 DOI: 10.3389/fcimb.2021.751503] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 10/29/2021] [Indexed: 02/05/2023] Open
Abstract
Osteomicrobiology is a new research field in which the aim is to explore the role of microbiota in bone homeostasis. The alveolar bone is that part of the maxilla and mandible that supports the teeth. It is now evident that naturally occurring alveolar bone loss is considerably stunted in germ-free mice compared with specific-pathogen-free mice. Recently, the roles of oral microbiota in modulating host defense systems and alveolar bone homeostasis have attracted increasing attention. Moreover, the mechanistic understanding of oral microbiota in mediating alveolar bone remodeling processes is undergoing rapid progress due to the advancement in technology. In this review, to provide insight into the role of oral microbiota in alveolar bone homeostasis, we introduced the term “oral osteomicrobiology.” We discussed regulation of alveolar bone development and bone loss by oral microbiota under physiological and pathological conditions. We also focused on the signaling pathways involved in oral osteomicrobiology and discussed the bridging role of osteoimmunity and influencing factors in this process. Finally, the critical techniques for osteomicrobiological investigations were introduced.
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Affiliation(s)
- Xingqun Cheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chengcheng Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xin Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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15
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Wu L, Kim Y, Seon GM, Choi SH, Park HC, Son G, Kim SM, Lim BS, Yang HC. Effects of RGD-grafted phosphatidylserine-containing liposomes on the polarization of macrophages and bone tissue regeneration. Biomaterials 2021; 279:121239. [PMID: 34753037 DOI: 10.1016/j.biomaterials.2021.121239] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 12/24/2022]
Abstract
Phosphatidylserine-containing liposomes (PSLs) can mimic the anti-inflammatory effects of apoptotic cells by binding to the phosphatidylserine receptors of macrophages. MGF-E8, a bridge molecule between phosphatidylserine and macrophages, can promote M2 polarization by activating macrophage integrin with its arginine-glycine-aspartic acid (RGD) motif. In this study, to mimic MGF-E8, PSLs presenting RGD peptide (RGD-PSLs) were prepared, and their immunomodulatory effects on macrophages and the bone tissue regeneration of rat calvarial defects were investigated. RGD peptides enhanced the phagocytosis of PSLs by macrophages, especially when the PSLs contained 3% RGD. RGD-PSLs were also more effective than PSLs for the suppression of lipopolysaccharide-induced gene expression of proinflammatory cytokines (i.e., IL-1β, IL-6, and TNF-α) as well as CD86 (M1 marker) expression. Furthermore, RGD promoted PSL-induced M2 polarization: 3%-RGD-PSLs significantly enhanced the mRNA expression of Arg-1, FIZZ1, and YM-1, as well as CD206 (M2 marker) expression. In a calvarial defect model, a significant increase in M2 with a decrease in M1 macrophages was observed with 3%-RGD-PSL treatment compared with the effects of PSLs alone. Finally, new bone formation was also accelerated by 3%-RGD-PSLs. Thus, these results suggest that the intensive immunomodulatory effect of RGD-PSLs led to the enhancement of bone tissue regeneration.
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Affiliation(s)
- Lele Wu
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Yongjoon Kim
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Gyeung Mi Seon
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Sang Hoon Choi
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Hee Chul Park
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Gitae Son
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Soung Min Kim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Bum-Soon Lim
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Hyeong-Cheol Yang
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, 101, Deahak-ro, Jongno-gu, Seoul, 03080, South Korea.
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16
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Ren Y, Cui Q, Zhang J, Liu W, Xu M, Lv Y, Wu Z, Zhang Y, Wu R. Milk Fat Globule-EGF Factor 8 Alleviates Pancreatic Fibrosis by Inhibiting ER Stress-Induced Chaperone-Mediated Autophagy in Mice. Front Pharmacol 2021; 12:707259. [PMID: 34421598 PMCID: PMC8375434 DOI: 10.3389/fphar.2021.707259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/23/2021] [Indexed: 12/26/2022] Open
Abstract
Pancreatic fibrosis is an important pathophysiological feature of chronic pancreatitis (CP). Our recent study has shown that milk fat globule-EGF factor 8 (MFG-E8) is beneficial in acute pancreatitis. However, its role in CP remained unknown. To study this, CP was induced in male adult Mfge8-knockout (Mfge8-KO) mice and wild type (WT) mice by six intraperitoneal injections of cerulein (50 μg/kg/body weight) twice a week for 10 weeks. The results showed that knockout of mfge8 gene aggravated pancreatic fibrosis after repeated cerulein injection. In WT mice, pancreatic levels of MFG-E8 were reduced after induction of CP and administration of recombinant MFG-E8 alleviated cerulein-induced pancreatic fibrosis. The protective effect of MFG-E8 in CP was associated with reduced autophagy and oxidative stress. In human pancreatic stellate cells (PSCs), MFG-E8 inhibited TGF-β1-induced ER stress and autophagy. MFG-E8 downregulated the expression of lysosomal associated membrane protein 2A (LAMP2A), a key factor in ER stress-induced chaperone-mediated autophagy (CMA). QX77, an activator of CMA, eliminated the effects of MFG-E8 on TGF-β1-induced PSC activation. In conclusion, MFG-E8 appears to mitigate pancreatic fibrosis via inhibiting ER stress-induced chaperone-mediated autophagy. Recombinant MFG-E8 may be developed as a novel treatment for pancreatic fibrosis in CP.
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Affiliation(s)
- Yifan Ren
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qing Cui
- Department of Cardiology, Xi'an Central Hospital, Xi'an, China
| | - Jia Zhang
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wuming Liu
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Meng Xu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yi Lv
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zheng Wu
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yuanyuan Zhang
- Department of Department of Pediatrics, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Rongqian Wu
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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17
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Lu Y, Liu L, Pan J, Luo B, Zeng H, Shao Y, Zhang H, Guan H, Guo D, Zeng C, Zhang R, Bai X, Zhang H, Cai D. MFG-E8 regulated by miR-99b-5p protects against osteoarthritis by targeting chondrocyte senescence and macrophage reprogramming via the NF-κB pathway. Cell Death Dis 2021; 12:533. [PMID: 34031369 PMCID: PMC8144578 DOI: 10.1038/s41419-021-03800-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 12/27/2022]
Abstract
Milk fat globule-epidermal growth factor (EGF) factor 8 (MFG-E8), as a necessary bridging molecule between apoptotic cells and phagocytic cells, has been widely studied in various organs and diseases, while the effect of MFG-E8 in osteoarthritis (OA) remains unclear. Here, we identified MFG-E8 as a key factor mediating chondrocyte senescence and macrophage polarization and revealed its role in the pathology of OA. We found that MFG-E8 expression was downregulated both locally and systemically as OA advanced in patients with OA and in mice after destabilization of the medial meniscus surgery (DMM) to induce OA. MFG-E8 loss caused striking progressive articular cartilage damage, synovial hyperplasia, and massive osteophyte formation in OA mice, which was relieved by intra-articular administration of recombinant mouse MFG-E8 (rmMFG-E8). Moreover, MFG-E8 restored chondrocyte homeostasis, deferred chondrocyte senescence and reprogrammed macrophages to the M2 subtype to alleviate OA. Further studies showed that MFG-E8 was inhibited by miR-99b-5p, expression of which was significantly upregulated in OA cartilage, leading to exacerbation of experimental OA partially through activation of NF-κB signaling in chondrocytes. Our findings established an essential role of MFG-E8 in chondrocyte senescence and macrophage reprogramming during OA, and identified intra-articular injection of MFG-E8 as a potential therapeutic target for OA prevention and treatment.
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Affiliation(s)
- Yuheng Lu
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Liangliang Liu
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Jianying Pan
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Bingsheng Luo
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Hua Zeng
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Yan Shao
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Hongbo Zhang
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Hong Guan
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Dong Guo
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Chun Zeng
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Rongkai Zhang
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Xiaochun Bai
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Haiyan Zhang
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.
| | - Daozhang Cai
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.
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18
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Huang CY, Vesvoranan O, Yin X, Montoya A, Londono V, Sawatari Y, Garcia-Godoy F. Anti-Inflammatory Effects of Conditioned Medium of Periodontal Ligament-Derived Stem Cells on Chondrocytes, Synoviocytes, and Meniscus Cells. Stem Cells Dev 2021; 30:537-547. [PMID: 33757298 DOI: 10.1089/scd.2021.0010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Osteoarthritis (OA) is the most common type of arthritis, afflicting millions of people in the world. Elevation of inflammatory mediators and enzymatic matrix destruction is often associated with OA. Therefore, the objective of this study was to investigate the effects of conditioned medium from periodontal ligament-derived stem cells (PDLSCs) on inflammatory and catabolic gene expressions of chondrocytes, synoviocytes, and meniscus cells under in vitro inflammatory condition. Stem cells were isolated from human periodontal ligaments. Conditioned medium was collected and concentrated 20 × . Chondrocytes, synoviocytes, and meniscus cells were isolated from pig knees and divided into four experimental groups: serum-free media, serum-free media+interleukin-1β (IL-1β) (10 ng/mL), conditioned media (CM), and CM+IL-1β. Protein content and extracellular vesicle (EV) miRNAs of CM were analyzed by liquid chromatography-tandem mass spectrometry and RNA sequencing, respectively. It was found that the IL-1β treatment upregulated the expression of IL-1β, tumor necrosis factor-α (TNF-α), MMP-13, and ADAMTS-4 genes in the three cell types, whereas PDLSC-conditioned medium prevented the upregulation of gene expression by IL-1β in all three cell types. This study also found that there was consistency in anti-inflammatory effects of PDLSC CM across donors and cell subcultures, while PDLSCs released several anti-inflammatory factors and EV miRNAs at high levels. OA has been suggested as an inflammatory disease in which all intrasynovial tissues are involved. PDLSC-conditioned medium is a cocktail of trophic factors and EV miRNAs that could mediate different inflammatory processes in various tissues in the joint. Introducing PDLSC-conditioned medium to osteoarthritic joints could be a potential treatment to prevent OA progression by inhibiting inflammation.
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Affiliation(s)
- Chun-Yuh Huang
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Oraya Vesvoranan
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Xue Yin
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Amanda Montoya
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Valeria Londono
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Yoh Sawatari
- Division of Oral and Maxillofacial Surgery, University of Miami/Jackson Memorial Hospital, Miami, Florida, USA
| | - Franklin Garcia-Godoy
- Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA
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19
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Enhancing the chondrogenic potential of chondrogenic progenitor cells by deleting RAB5C. iScience 2021; 24:102464. [PMID: 34013174 PMCID: PMC8113995 DOI: 10.1016/j.isci.2021.102464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/24/2021] [Accepted: 04/21/2021] [Indexed: 11/21/2022] Open
Abstract
Osteoarthritis (OA) is the most prevalent chronic joint disease that affects a large proportion of the elderly population. Chondrogenic progenitor cells (CPCs) reside in late-stage OA cartilage tissue, producing a fibrocartilaginous extracellular matrix; these cells can be manipulated in vitro to deposit proteins of healthy articular cartilage. CPCs are under the control of SOX9 and RUNX2. In our earlier studies, we showed that a knockdown of RUNX2 enhanced the chondrogenic potential of CPCs. Here we demonstrate that CPCs carrying a knockout of RAB5C, a protein involved in endosomal trafficking, exhibited elevated expression of multiple chondrogenic markers, including the SOX trio, and increased COL2 deposition, whereas no changes in COL1 deposition were observed. We report RAB5C as an attractive target for future therapeutic approaches designed to increase the COL2 content in the diseased joint.
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20
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Birt IA, Hagenauer MH, Clinton SM, Aydin C, Blandino P, Stead JD, Hilde KL, Meng F, Thompson RC, Khalil H, Stefanov A, Maras P, Zhou Z, Hebda-Bauer EK, Goldman D, Watson SJ, Akil H. Genetic Liability for Internalizing Versus Externalizing Behavior Manifests in the Developing and Adult Hippocampus: Insight From a Meta-analysis of Transcriptional Profiling Studies in a Selectively Bred Rat Model. Biol Psychiatry 2021; 89:339-355. [PMID: 32762937 PMCID: PMC7704921 DOI: 10.1016/j.biopsych.2020.05.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/29/2020] [Accepted: 05/19/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND For more than 16 years, we have selectively bred rats for either high or low levels of exploratory activity within a novel environment. These bred high-responder (bHR) and bred low-responder (bLR) rats model temperamental extremes, exhibiting large differences in internalizing and externalizing behaviors relevant to mood and substance use disorders. METHODS We characterized persistent differences in gene expression related to bHR/bLR phenotype across development and adulthood in the hippocampus, a region critical for emotional regulation, by meta-analyzing 8 transcriptional profiling datasets (microarray and RNA sequencing) spanning 43 generations of selective breeding (postnatal day 7: n = 22; postnatal day 14: n = 49; postnatal day 21: n = 21; adult: n = 46; all male). We cross-referenced expression differences with exome sequencing within our colony to pinpoint candidates likely to mediate the effect of selective breeding on behavioral phenotype. The results were compared with hippocampal profiling from other bred rat models. RESULTS Genetic and transcriptional profiling results converged to implicate multiple candidate genes, including two previously associated with metabolism and mood: Trhr and Ucp2. Results also highlighted bHR/bLR functional differences in the hippocampus, including a network essential for neurodevelopmental programming, proliferation, and differentiation, centering on Bmp4 and Mki67. Finally, we observed differential expression related to microglial activation, which is important for synaptic pruning, including 2 genes within implicated chromosomal regions: C1qa and Mfge8. CONCLUSIONS These candidate genes and functional pathways may direct bHR/bLR rats along divergent developmental trajectories and promote a widely different reactivity to the environment.
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Affiliation(s)
- Isabelle A. Birt
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Megan H. Hagenauer
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | | | - Cigdem Aydin
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Peter Blandino
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - John D.H. Stead
- Department of Neuroscience, Carleton University, Ottawa, Ontario,
Canada
| | - Kathryn L. Hilde
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Fan Meng
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Robert C. Thompson
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Huzefa Khalil
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Alex Stefanov
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Pamela Maras
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Zhifeng Zhou
- National Institute on Alcohol Abuse and Alcoholism, National
Institutes of Health, Bethesda, Maryland
| | - Elaine K. Hebda-Bauer
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - David Goldman
- National Institute on Alcohol Abuse and Alcoholism, National
Institutes of Health, Bethesda, Maryland
| | - Stanley J. Watson
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
| | - Huda Akil
- Molecular and Behavioral Neuroscience Institute, University of
Michigan, Ann Arbor, Michigan
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21
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Peng L, Zhu N, Mao J, Huang L, Yang Y, Zhou Z, Wang L, Wu B. Expression levels of CXCR4 and CXCL12 in patients with rheumatoid arthritis and its correlation with disease activity. Exp Ther Med 2020; 20:1925-1934. [PMID: 32782501 PMCID: PMC7401245 DOI: 10.3892/etm.2020.8950] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 02/26/2020] [Indexed: 12/15/2022] Open
Abstract
The present study aimed to investigate the expression levels of C-X-C motif chemokine receptor 4 (CXCR4) and CXC ligand 12 (CXCL12) in patients with rheumatoid arthritis (RA) and the correlation with disease activity. In total, 60 patients with RA were selected as the study group, comprising of 28 patients in active-stage and 32 patients in remission-stage. In addition, 60 patients with osteoarthritis were selected as the control group. Western blotting and ELISA were used to detect the expression of CXCR4 and CXCL12, respectively. The Spearman's correlation test was used to analyze correlations between CXCR4 and CXCL12, and erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), disease activity score 28 (DAS28) scores and rheumatoid factor (RF). The present results suggested that CXCR4 and CXCL12 expression levels in the serum and joint synovial fluid of the study group were significantly higher compared with the control group (P<0.05). Moreover, CXCR4 and CXCL12 expression levels in the RA-active group were higher compared with the remission (P<0.05) and control groups (P<0.01). The Pearson test results suggested that the expression levels of CXCR4 and CXCL12 in the serum and joint synovial fluid of patients with RA had a positive correlation with the ESR, CRP, RF and DAS28 scores (P<0.05). CXCL12 and CXCR4 were highly expressed in the serum and joint synovial fluid of patients with RA, and these expression levels were positively correlated with ESR, CRP, RF and DAS28 scores. Therefore, these clinical parameters may be used as indicators to evaluate the disease activity of patients with RA.
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Affiliation(s)
- Liping Peng
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Ning Zhu
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Jing Mao
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Li Huang
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Yameng Yang
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Zhengju Zhou
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Li Wang
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
| | - Bin Wu
- Department of Rheumatology and Immunology, First People's Hospital of Jingzhou, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
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22
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Naeini MB, Bianconi V, Pirro M, Sahebkar A. The role of phosphatidylserine recognition receptors in multiple biological functions. Cell Mol Biol Lett 2020; 25:23. [PMID: 32226456 PMCID: PMC7098104 DOI: 10.1186/s11658-020-00214-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/04/2020] [Indexed: 02/06/2023] Open
Abstract
Apoptotic cells are rapidly engulfed and degraded by phagocytes through efferocytosis. Efferocytosis is a highly regulated process. It is triggered upon the activation of caspase-dependent apoptosis, which in turn promotes the expression of "eat me" signals on the surface of dying cells and the release of soluble "find me" signals for the recruitment of phagocytes. To date, many "eat me" signals have been recognized, including phosphatidylserine (PS), intercellular adhesion molecule-3, carbohydrates (e.g., amino sugars, mannose) and calreticulin. Among them, PS is the most studied one. PS recognition receptors are different functionally active receptors expressed by phagocytes. Various PS recognition receptors with different structure, cell type expression, and ability to bind to PS have been recognized. Although PS recognition receptors do not fall into a single classification or family of proteins due to their structural differences, they all share the common ability to activate downstream signaling pathways leading to the production of anti-inflammatory mediators. In this review, available evidence regarding molecular mechanisms underlying PS recognition receptor-regulated clearance of apoptotic cells is discussed. In addition, some efferocytosis-independent biological functions of PS recognition receptors are reviewed.
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Affiliation(s)
- Mehri Bemani Naeini
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vanessa Bianconi
- Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine, University of Perugia, Perugia, Italy
| | - Matteo Pirro
- Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine, University of Perugia, Perugia, Italy
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Biotechnology, School of Medicine, Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, P.O. Box: 91779-48564, Mashhad, Iran
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23
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Fang YY, Zhang JH. MFG-E8 alleviates oxygen-glucose deprivation-induced neuronal cell apoptosis by STAT3 regulating the selective polarization of microglia. Int J Neurosci 2020; 131:15-24. [PMID: 32098538 DOI: 10.1080/00207454.2020.1732971] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background: Ischemic stroke is a complex pathological process, involving inflammatory reaction, energy metabolism disorder, free radical injury, cell apoptosis and other aspects. Accumulating evidences have revealed that MFG-E8 had a protective effect on multiple organ injuries. However, the comprehensive function and mechanism of MFG-E8 in ischemic brain remain largely unclear.Methods: BV-2 cells were treated with recombinant murine MFG-E8 (rmMFG-E8) or/and Colivelin TFA after exposing for 4 h with oxygen glucose deprivation (OGD). Cell viability and apoptosis were assessed by MTT assay and Flow cytometry. RT-qPCR and Western blot assays were applied to examine the expression levels of MFG-E8, apoptosis-related proteins and M1/M2 polarization markers.Results: Our results demonstrated that OGD significantly inhibited microglial viability and facilitated apoptosis. In addition, we found that OGD downregulated MFG-E8 expression, and MFG-E8 inhibited OGD-induced microglial apoptosis and promoted microglial M2 polarization. In terms of mechanism, we proved that MFG-E8 regulated OGD-induced microglial M1/M2 polarization by inhibiting p-STAT3 and SOCS3 expressions, which was reversed by STAT3 activator (Colivelin TFA). Finally, we verified MFG-E8 alleviated OGD-induced neuronal cell apoptosis by M2 polarization of BV-2 cells.Conclusions: We demonstrated that MFG-E8 reduced neuronal cell apoptosis by enhancing activation of microglia via STAT3 signaling. Therefore, we suggested that MFG-E8 might provide a novel mechanism for ischemic stroke.
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Affiliation(s)
- Ying-Ying Fang
- Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong Province, P.R. China
| | - Jing-Hui Zhang
- Department of Rehabilitation, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, P.R. China.,Guangdong Association of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, P.R. China
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24
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Chikazawa M, Shimizu M, Yamauchi Y, Sato R. Bridging molecules are secreted from the skeletal muscle and potentially regulate muscle differentiation. Biochem Biophys Res Commun 2019; 522:113-120. [PMID: 31753488 DOI: 10.1016/j.bbrc.2019.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 11/02/2019] [Indexed: 01/02/2023]
Abstract
Muscle myogenesis is an essential step for muscle development and recovery. During muscle fusion, multiple molecules are thought to be necessary for the formation of normal myotubes. Milk fat globule-EGF factor 8 (MFG-E8) and Gas6 are phosphatidylserine-recognizing bridging molecules that are secreted mainly from immune cells. In this study, we confirmed that these molecules are expressed and secreted from C2C12 cells. Mouse muscle and satellite cells also expressed these molecules. MFG-E8 was highly expressed and secreted in both undifferentiated and differentiated C2C12 cells. We observed that MFG-E8 and Gas6 were bound to the surface of differentiated C2C12 cells more compared with undifferentiated cells. Additionally, the treatment of recombinant MFG-E8 upregulated expression of myogenic genes and suppressed apoptosis during myogenesis in C2C12 cells. In this paper, we discuss the presence of novel functional molecules expressed and secreted in the skeletal muscle. The results of this study suggest that bridging molecules are one of the determinants of myogenesis or other muscle responses.
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Affiliation(s)
- Miho Chikazawa
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Makoto Shimizu
- Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yoshio Yamauchi
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ryuichiro Sato
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan; Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan; AMED-CREST, Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan.
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25
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Shimagaki T, Yoshio S, Kawai H, Sakamoto Y, Doi H, Matsuda M, Mori T, Osawa Y, Fukai M, Yoshida T, Ma Y, Akita T, Tanaka J, Taketomi A, Hanayama R, Yoshizumi T, Mori M, Kanto T. Serum milk fat globule-EGF factor 8 (MFG-E8) as a diagnostic and prognostic biomarker in patients with hepatocellular carcinoma. Sci Rep 2019; 9:15788. [PMID: 31673081 PMCID: PMC6823494 DOI: 10.1038/s41598-019-52356-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 10/16/2019] [Indexed: 02/07/2023] Open
Abstract
Current serum hepatocellular carcinoma (HCC) biomarkers are insufficient for early diagnosis. We aimed to clarify whether serum MFG-E8 can serve as a diagnostic or prognostic biomarker of HCC. Serum MFG-E8 levels of 282 HCC patients, who underwent primary hepatectomy, were examined by ELISA. We also quantified serum MFG-E8 levels in patients with chronic hepatitis (CH), liver cirrhosis (LC), as well as in healthy volunteers (HVs). Serum MFG-E8 levels were significantly lower in HCC patients than in HVs regardless of the etiology of liver disease (3.6 ± 0.1 vs 5.8 ± 0.2 ng/mL, p < 0.0001), and recovered after treatment of HCC. Serum MFG-E8 levels in CH and LC patients were comparable to those in HVs. Serum MFG-E8 could detect HCCs, even α-fetoprotein (AFP)-negative or des-γ-carboxy prothrombin (DCP)-negative HCCs, in CH and LC patients. Our new HCC prediction model using MFG-E8 and DCP (Logit(p) = 2.619 − 0.809 × serum MFG-E8 + 0.0226 × serum DCP) distinguished HCC patients from CH and LC patients with an area under the curve of 0.923, a sensitivity of 81.1%, and a specificity of 89.8%. Futhermore, low preoperative serum MFG-E8 was an independent predictor of poor overall survival. Thus, serum MFG-E8 could serve as a feasible diagnostic and prognostic biomarker for HCC.
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Affiliation(s)
- Tomonari Shimagaki
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Sachiyo Yoshio
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan.
| | - Hironari Kawai
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Yuzuru Sakamoto
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Hiroyoshi Doi
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Michitaka Matsuda
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Taizo Mori
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Yosuke Osawa
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Moto Fukai
- Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Takeshi Yoshida
- Department of Immunology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Yunfei Ma
- Department of Immunology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tomoyuki Akita
- Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Junko Tanaka
- Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akinobu Taketomi
- Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Rikinari Hanayama
- Department of Immunology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaki Mori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tatsuya Kanto
- Department of Liver Disease, The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan.
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26
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Chen F, Liu H, Xia J, Ding X, Fan J, Zhu X, Cui S, Yi H, Gao R, Liu W. Synovial fluid and plasma levels of milk fat globule-epidermal growth factor 8 are inversely correlated with radiographic severity of knee osteoarthritis. J Int Med Res 2019; 47:4422-4430. [PMID: 31342838 PMCID: PMC6753570 DOI: 10.1177/0300060519862460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Objective Mounting evidence demonstrates that inflammation plays an important role in
the pathogenesis of osteoarthritis (OA). Milk fat globule–epidermal growth
factor 8 (MFG-E8) is an important glycoprotein that is involved in
anti-inflammatory responses. The present study was performed to assess the
MFG-E8 levels in plasma and synovial fluid and explore the association
between radiographic severity and MFG-E8 levels in patients with knee
OA. Methods This study involved 138 healthy controls and 142 patients with knee OA. The
MFG-E8 levels in plasma and synovial fluid were evaluated by enzyme-linked
immunosorbent assay. The Kellgren and Lawrence classification was used for
OA grading. Results The plasma MFG-E8 level was significantly lower in patients with knee OA than
in healthy controls. The synovial fluid MFG-E8 level was significantly lower
than the plasma level in patients with knee OA. More importantly, the MFG-E8
levels in synovial fluid and plasma were significantly and inversely
associated with radiographic severity among patients with knee OA. Conclusions These results demonstrate that the levels of MFG-E8 in synovial fluid and
plasma are inversely correlated with the radiographic severity of knee
OA.
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Affiliation(s)
- Feihu Chen
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Hao Liu
- School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jie Xia
- Department of Gastroenterology, the Changzhou NO.2 People's Hospital, Changzhou, Jiangsu, China
| | - Xiaomin Ding
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Jianbo Fan
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xinhui Zhu
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Shengyu Cui
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Hong Yi
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Rufeng Gao
- Department of Orthopedics, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Liu
- School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Orthopaedics, the Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
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27
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Colditz J, Thiele S, Baschant U, Garbe AI, Niehrs C, Hofbauer LC, Rauner M. Osteogenic Dkk1 Mediates Glucocorticoid-Induced but Not Arthritis-Induced Bone Loss. J Bone Miner Res 2019; 34:1314-1323. [PMID: 30779862 DOI: 10.1002/jbmr.3702] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/01/2019] [Accepted: 02/05/2019] [Indexed: 12/17/2022]
Abstract
Dickkopf-1 (Dkk1) is a negative regulator of bone formation and bone mass and is deregulated in bone loss induced by arthritis and glucocorticoid (GC) exposure. However, the role of Dkk1 in these pathological processes is still unknown. Here, we used conditional Dkk1 knock-out mice to determine the role of Dkk1 produced by osteolineage cells in the development of arthritis and GC-induced bone loss. Osteoprogenitor (Osx-Cre)- and osteocyte (Dmp1-Cre)-specific knock-out mice and their Cre-negative controls were subjected to two arthritis models, K/BxN and antigen-induced arthritis. Disease induction and progression were assessed. GC-induced bone loss was induced in 25-week-old female mice by implanting prednisolone (7.5 mg) slow-release pellets for 4 weeks. Dkk1fl/fl ;Osx-Cre mice subjected to K/BxN arthritis showed mildly reduced disease severity with reduced infiltration of neutrophils and T cells into affected joints and reduced bone erosions compared with Cre-negative controls. Osteocyte-specific Dkk1 deletion did not affect disease severity or local bone erosions. However, systemic bone loss at the spine was less severe in both mouse lines. In contrast to arthritis, both lines were protected from GC-induced bone loss. Although the Cre-negative controls lost about 26% and 31% bone volume potentially caused by decreased bone formation, Cre-positive mice did not exhibit such alterations. Dkk-1 deficiency in osteolineage cells protects against GC-induced bone loss, whereas it had only minor effects in arthritis. Therefore, Dkk1 may be a promising therapeutic target especially for bone diseases in which inhibition of bone formation represents the predominant mechanism. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Juliane Colditz
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany.,Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Sylvia Thiele
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany.,Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Ulrike Baschant
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany.,Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Annette I Garbe
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Christof Niehrs
- Division of Molecular Embryology, DKFZ-ZMBH Alliance, Heidelberg, Germany.,Institute of Molecular Biology, Mainz, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany.,Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany.,Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany.,Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
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28
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Yavuz MC, Pekbağriyanik T, Sağlam M, Köseoğlu S. Evaluation of milk fat globule-epidermal growth factor-factor VIII and IL-1β levels in gingival crevicular fluid and saliva in periodontal disease and health. Odontology 2019; 107:449-456. [PMID: 30903320 DOI: 10.1007/s10266-019-00419-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 03/11/2019] [Indexed: 12/14/2022]
Abstract
The aim of this study is to determine the levels of MFG-E8 and interleukin (IL)-1β in saliva and gingival crevicular fluid (GCF) associated with periodontal health and disease. Whole saliva and GCF samples were obtained from systemically healthy participants who were either periodontally healthy (n = 24) or suffered from gingivitis (n = 25) or chronic periodontitis (n = 25). Full-mouth clinical periodontal measurements, including bleeding on probing, probing depth, gingival index, plaque index, and clinical attachment level were also recorded. Enzyme-linked immunosorbent assay was used to estimate MFG-E8 and IL-1β levels in the samples. Analysis of variance, Kruskal-Wallis tests, and Pearson correlation tests were used to analyse the data statistically. The total level of MFG-E8 in GCF was significantly higher in the healthy group than in the other two groups (P = 0.01). Salivary MFG-E8 levels did not differ significantly among the groups. There were negative correlations between the level of MFG-E8 in GCF and probing depth (P = 0.03), bleeding on probing (P = 0.001), plaque index (P = 0.003), and gingival index (P = 0.003). The total level of IL-1β in GCF was significantly lower in the healthy group than in the groups with gingivitis and chronic periodontitis (P < 0.001). Salivary IL-1β levels showed significant differences across all three groups (P < 0.001). The level of MFG-E8 in GCF was higher in the healthy group than in the periodontal disease groups. Furthermore, there was no difference between gingivitis and periodontitis groups. The relationship between MFG-E8 and periodontal status should be further investigated.
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Affiliation(s)
- Mustafa Cihan Yavuz
- Department of Periodontology, Faculty of Dentistry, Istanbul Medeniyet University, 34100, Istanbul, Turkey.
| | | | - Mehmet Sağlam
- Department of Periodontology, Faculty of Dentistry, Izmir Katip Çelebi University, Izmir, Turkey
| | - Serhat Köseoğlu
- Department of Periodontology, Faculty of Dentistry, University of Health Science, Istanbul, Turkey
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Fujiwara C, Uehara A, Sekiguchi A, Uchiyama A, Yamazaki S, Ogino S, Yokoyama Y, Torii R, Hosoi M, Suto C, Tsunekawa K, Murakami M, Ishikawa O, Motegi S. Suppressive Regulation by MFG‐E8 of Latent Transforming Growth Factor β–Induced Fibrosis via Binding to αv Integrin: Significance in the Pathogenesis of Fibrosis in Systemic Sclerosis. Arthritis Rheumatol 2019; 71:302-314. [DOI: 10.1002/art.40701] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/28/2018] [Indexed: 02/06/2023]
Affiliation(s)
| | - Akihito Uehara
- Gunma University Graduate School of Medicine Maebashi Japan
| | | | | | | | - Sachiko Ogino
- Gunma University Graduate School of Medicine Maebashi Japan
| | - Yoko Yokoyama
- Gunma University Graduate School of Medicine Maebashi Japan
| | - Ryoko Torii
- Gunma University Graduate School of Medicine Maebashi Japan
| | - Mari Hosoi
- Gunma University Graduate School of Medicine Maebashi Japan
| | - Chiaki Suto
- Gunma University Graduate School of Medicine Maebashi Japan
| | | | | | - Osamu Ishikawa
- Gunma University Graduate School of Medicine Maebashi Japan
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Benmoussa A, Gotti C, Bourassa S, Gilbert C, Provost P. Identification of protein markers for extracellular vesicle (EV) subsets in cow's milk. J Proteomics 2018; 192:78-88. [PMID: 30153512 DOI: 10.1016/j.jprot.2018.08.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/02/2018] [Accepted: 08/20/2018] [Indexed: 12/11/2022]
Abstract
Extracellular vesicles (EVs), like exosomes, are small membrane vesicles involved in cell-to-cell communications that modulate numerous biological processes. We previously discovered a new EV subset in milk (sedimenting at 35,000 g; 35 K) that protected its cargo (RNAs and proteins) during simulated digestion and was more enriched in microRNAs than exosomes (sedimenting at 100 K). Here, we used LC-MS/MS to push further the comparison between these two pellets. Commonly used EV markers were not differentially enriched between the pellets, questioning their use with cow's milk EVs. Similarly, the majority of the quantified proteins were equally enriched between the two pellets. Nevertheless, 20 proteins were specific to 35 K, while 41 were specifically enriched in 100 K (p < 0.05), suggesting their potential use as specific markers. Loaded with these proteins, the EVs in these pellets might regulate translation, proliferation and cell survival for 35 K, and metabolism, extracellular matrix turnover and immunity for 100 K. This approach also brought new insights into milk EV-associated integrins and their possible role in specifically targeting recipient cell types. These findings may help better discriminate between milk EVs, improve our understanding of milk EV-associated protein function and their possible use as therapeutic tools for the management of immunity- and metabolism-associated disorders. WEB PAGE: http://www.crchuq.ca/en/research/researchers/4691.
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Affiliation(s)
- Abderrahim Benmoussa
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Clarisse Gotti
- Proteomics Platform, Genomics Center, CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC G1V 4G2, Canada
| | - Sylvie Bourassa
- Proteomics Platform, Genomics Center, CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC G1V 4G2, Canada
| | - Caroline Gilbert
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Patrick Provost
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada.
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Michalski MN, Seydel AL, Siismets EM, Zweifler LE, Koh AJ, Sinder BP, Aguirre JI, Atabai K, Roca H, McCauley LK. Inflammatory bone loss associated with MFG-E8 deficiency is rescued by teriparatide. FASEB J 2018; 32:3730-3741. [PMID: 29475373 DOI: 10.1096/fj.201701238r] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A prolonged increase in proinflammatory cytokines is associated with osteoporotic and autoimmune bone loss and, conversely, anti-inflammatory pathways are associated with protection against bone loss. Milk fat globule-epidermal growth factor (MFG-E)-8 is a glycoprotein that is proresolving, regulates apoptotic cell clearance, and has been linked to autoimmune disease and skeletal homeostasis. The role of MFG-E8 in the young vs. adult skeleton was determined in mice deficient in MFG-E8 (KO). In vivo, trabecular bone was similar in MFG-E8KO and wild-type (WT) mice at 6 and 16 wk, whereas 22 wk adult MFG-E8KO mice displayed significantly reduced trabecular BV/TV. The number of osteoclasts per bone surface was increased in 22-wk MFG-E8 KO vs. WT mice, and recombinant murine MFG-E8 decreased the number and size of osteoclasts in vitro. Adult MFG-E8KO spleen weight:body weight was increased compared with WT, and flow cytometric analysis showed significantly increased myeloid-derived suppressor cells (CD11bhiGR-1+) and neutrophils (CD11bhiLy6G+) in MFG-E8KO bone marrow, suggesting an inflammatory phenotype. PTH-treated MFG-E8KO mice showed a greater anabolic response (+124% BV/TV) than observed in PTH-treated WT mice (+64% BV/TV). These data give insight into the role of MFG-E8 in the adult skeleton and suggest that anabolic PTH may be a valuable therapeutic approach for autoimmune-associated skeletal disease.-Michalski, M. N., Seydel, A. L., Siismets, E. M., Zweifler, L. E., Koh, A. J., Sinder, B. P., Aguirre, J. I., Atabai, K., Roca, H., McCauley, L. K. Inflammatory bone loss associated with MFG-E8 deficiency is rescued by teriparatide.
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Affiliation(s)
- Megan N Michalski
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Anna L Seydel
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Erica M Siismets
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Laura E Zweifler
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Amy J Koh
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Benjamin P Sinder
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - J Ignacio Aguirre
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Kamran Atabai
- Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, California, USA; and
| | - Hernan Roca
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Laurie K McCauley
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA.,Department of Pathology, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
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Kajikawa T, Meshikhes F, Maekawa T, Hajishengallis E, Hosur KB, Abe T, Moss K, Chavakis T, Hajishengallis G. Milk fat globule epidermal growth factor 8 inhibits periodontitis in non-human primates and its gingival crevicular fluid levels can differentiate periodontal health from disease in humans. J Clin Periodontol 2017; 44:472-483. [PMID: 28207941 DOI: 10.1111/jcpe.12707] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2017] [Indexed: 01/24/2023]
Abstract
AIM We have previously shown that the secreted glycoprotein milk fat globule epidermal growth factor 8 (MFG-E8) has anti-inflammatory and anti-osteoclastogenic properties. Our objective was to investigate the potential of MFG-E8 as a diagnostic or therapeutic agent in periodontitis. MATERIALS AND METHODS Periodontitis was induced in non-human primates (NHPs) by placing ligatures around posterior teeth on both halves of the mandible for a split-mouth design: one side was treated with MFG-E8-Fc and the other with Fc control. Disease was assessed by clinical periodontal examinations, radiographic analysis of bone loss, and analysis of cytokine mRNA expression in gingival biopsy samples. Gingival crevicular fluid (GCF) was collected from human healthy volunteers or subjects with gingivitis, chronic moderate periodontitis, or chronic severe periodontitis. Additionally, GCF was collected from a subset of severe periodontitis patients following scaling and root planing (SRP) and after pocket reduction surgery. GCF was analysed to quantify MFG-E8 and periodontitis-relevant cytokines using multiplex assays. RESULTS In NHPs, sites treated with MFG-E8-Fc exhibited significantly less ligature-induced periodontal inflammation and bone loss than Fc control-treated sites. In humans, the GCF levels of MFG-E8 were significantly higher in health than in periodontitis, whereas the reverse was true for the proinflammatory cytokines tested. Consistently, MFG-E8 was elevated in GCF after both non-surgical (SRP) and surgical periodontal treatment of periodontitis patients. CONCLUSION MFG-E8 is, in principle, a novel therapeutic agent and biomarker of periodontitis.
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Affiliation(s)
- Tetsuhiro Kajikawa
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Fatimah Meshikhes
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Tomoki Maekawa
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Evlambia Hajishengallis
- Department of Preventive and Restorative Sciences, Division of Pediatric Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kavita B Hosur
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Toshiharu Abe
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kevin Moss
- Department of Dental Ecology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - George Hajishengallis
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Li Y, Ran W, Zhang J, Chen S, Li Y, Luo D, Wang C, Jia W. Circulating milk fat globule-epidermal growth factor 8 levels are increased in pregnancy and gestational diabetes mellitus. J Diabetes Investig 2017; 8:571-581. [PMID: 28035763 PMCID: PMC5497050 DOI: 10.1111/jdi.12616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/28/2016] [Accepted: 12/28/2016] [Indexed: 11/28/2022] Open
Abstract
AIMS/INTRODUCTION Milk fat globule-epidermal growth factor 8 (MFG-E8) is the key mediator in anti-inflammatory responses that facilitate phagocytosis of apoptotic cells, and play an essential role in type 2 diabetes and pregnancy, both of which are under a low-grade inflammatory state. However, the action of MFG-E8 in gestational diabetes mellitus (GDM) is unclear. We measured plasma MFG-E8 levels in pregnancy and GDM for the first time, and elucidated possible relationships between its plasma levels and various metabolic parameters. MATERIALS AND METHODS Plasma MFG-E8 levels were quantified by enzyme-linked immunosorbent assay in 66 women with GDM, 70 with normal pregnancy (p-NGT) and 44 healthy non-pregnant controls (CON), who were matched for age and body mass index. Inflammatory factors tumor necrosis factor-α (TNF-α) and C-reactive protein levels were measured, oral glucose tolerance test was carried out and β-cell function was evaluated. RESULTS Plasma MFG-E8 levels were remarkably higher in p-NGT than in CON (P = 0.024), and were further elevated in GDM vs p-NGT (P = 0.016). MFG-E8 concentrations correlated positively with hemoglobin A1c, glucose levels and insulin resistance (homeostasis model assessment for insulin resistance), and correlated inversely with TNF-α and insulin secretion evaluated by disposition indices in pregnancies. Fasting glucose levels, disposition index of first phase insulin secretion and TNF-α were independent predictors of MFG-E8 levels in pregnancies. Logistic regression analyses showed that women in the third tertile of MFG-E8 levels had a markedly elevated risk of GDM. CONCLUSIONS Circulating MFG-E8 levels are dramatically elevated in pregnancy, and are significantly higher in GDM vs p-NGT. MFG-E8 concentrations are significantly associated with TNF-α, fasting glucose levels, homeostasis model assessment for insulin resistance and disposition indices. However, further studies are required to elucidate the regulation mechanism of MFG-E8 during pregnancy and GDM.
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Affiliation(s)
- Yuanyuan Li
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wenzhuo Ran
- Department of Clinical Laboratory, Wuhan No. 1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiaqiang Zhang
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Shi Chen
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Yihang Li
- Department of Anesthesiology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Deng Luo
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Chen Wang
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Weiping Jia
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
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Abstract
Bone is in a constant state of remodeling, a process which was once attributed solely to osteoblasts and osteoclasts. Decades of research has identified many other populations of cells in the bone that participate and mediate skeletal homeostasis. Recently, osteal macrophages emerged as vital participants in skeletal remodeling and osseous repair. The exact mechanistic roles of these tissue-resident macrophages are currently under investigation. Macrophages are highly plastic in response to their micro-environment and are typically classified as being pro- or anti-inflammatory (pro-resolving) in nature. Given that inflammatory states result in decreased bone mass, proinflammatory macrophages may be negative regulators of bone turnover. Pro-resolving macrophages have been shown to release anabolic factors and may present a target for therapeutic intervention in inflammation-induced bone loss and fracture healing. The process of apoptotic cell clearance, termed efferocytosis, is mediated by pro-resolving macrophages and may contribute to steady-state bone turnover as well as fracture healing and anabolic effects of osteoporosis therapies. Parathyroid hormone is an anabolic agent in bone that is more effective in the presence of mature phagocytic macrophages, further supporting the hypothesis that efferocytic macrophages are positive contributors to bone turnover. Therapies which alter macrophage plasticity in tissues other than bone should be explored for their potential to treat bone loss either alone or in conjunction with current bone therapeutics. A better understanding of the exact mechanisms by which macrophages mediate bone homeostasis will lead to an expansion of pharmacologic targets for the treatment of osteoporosis and inflammation-induced bone loss.
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Affiliation(s)
- Megan N Michalski
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI 48109, United States
| | - Laurie K McCauley
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI 48109, United States; Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, United States.
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Sun G, Liu J, Xia G, Zhang L, Li Y, Zhou Z, Lv Y, Wei S, Liu J, Quan J. Reduced serum milk fat globule-epidermal growth factor 8 (MFG-E8) concentrations are associated with an increased risk of microvascular complications in patients with type 2 diabetes. Clin Chim Acta 2017; 466:201-206. [PMID: 28089751 DOI: 10.1016/j.cca.2017.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/01/2017] [Accepted: 01/11/2017] [Indexed: 01/29/2023]
Abstract
BACKGROUND The association between serum milk fat globule-epidermal growth factor 8 (MFG-E8) concentrations and vascular complications in T2DM remains unclear. METHODS A total of 149 patients with T2DM were included. The serum concentrations of MFG-E8, glycosylated hemoglobin (HbA1c), and high-sensitivity C-reactive protein (hs-CRP) were measured. RESULTS There was no significant difference in serum MFG-E8 concentrations between the T2DM group and the T2DM with subclinical atherosclerosis (AS) group (615.49±143.54 vs. 596.22±79.46ng/ml, P=0.365), while the serum concentrations of MFG-E8 in the T2DM with microvascular complications group (446.70±61.53ng/ml) and the T2DM with subclinical AS and microvascular complications group (200.87±38.86ng/ml) were significantly lower than those in the T2DM group (P=0.000 for both). In addition, hs-CRP and HbAlc concentrations were independently associated with serum MFG-E8 concentrations (P=0.024 and P=0.01, respectively), and low serum MFG-E8 concentrations were significantly associated with an increased risk of microvascular complications in T2DM patients. CONCLUSIONS Serum concentrations of MFG-E8 were negatively associated with the risk of microvascular complications in patients with T2DM. Thus, it might be a potential candidate biomarker for diabetic microvascular complications.
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Affiliation(s)
- Guohua Sun
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Ningxia Medical University, Yinchuan, China
| | - Juxiang Liu
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China
| | - Guanghao Xia
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China
| | - Lijuan Zhang
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China
| | - Yonghong Li
- Institute of Clinical and Translational Medicine, Gansu Provincial Hospital, Lanzhou, China
| | - Zubang Zhou
- Ultrasonic Diagnostic Center, Gansu Provincial Hospital, Lanzhou, China
| | - Yaya Lv
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China
| | - Suhong Wei
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China
| | - Jing Liu
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China
| | - Jinxing Quan
- Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, China; Key Lab of Endocrine and Metabolic Diseases of Gansu Province, Lanzhou, China.
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Li Y, Ran W, Zhang J, Chen S, Li Y, Luo D, Wang C, Jia W. Elevated serum milk fat globule-epidermal growth factor 8 levels in type 2 diabetic patients are suppressed by overweight or obese status. IUBMB Life 2017; 69:63-71. [PMID: 28067023 DOI: 10.1002/iub.1592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/03/2016] [Indexed: 11/07/2022]
Abstract
Inflammation is the most important link between obesity and type 2 diabetes (T2D). Although milk fat globule-epidermal growth factor 8 (MFG-E8) is a key mediator in anti-inflammatory responses, its role in obesity and diabetes is not yet completely understood. We aimed to measure MFG-E8 serum levels and to explore the role of MFG-E8 in obesity and T2D. Fasting serum MFG-E8 levels were quantified by enzyme-linked immunosorbent assay for 168 individuals, whose oral glucose tolerance test was conducted, and levels of inflammatory factors, including tumor necrosis factor-α (TNF-α) and C-reactive protein, were measured. The participants were subdivided into 66 newly diagnosed T2D individuals, 44 impaired glucose tolerance (IGT) subjects and 58 healthy controls. Their characteristics were further classified as lean or nonlean for investigation. MFG-E8 levels were significantly higher in T2D subjects than in healthy controls (P = 0.028). Decreased levels of MFG-E8 were found in overweight or obese individuals, compared to those in lean subjects, in both the T2D and IGT groups (P < 0.001). Interestingly, MFG-E8 levels showed a negative correlation with body mass index (BMI) and TNF-α levels in the total population and the T2D subgroup. Further, BMI and TNF-α concentrations were found to be independent predictors of MFG-E8 levels in all subjects. MFG-E8 levels are elevated in T2D but suppressed by increased adipose tissues, thereby allowing inflammatory factors to rise to high levels. MFG-E8 may serve as a potential biomarker for obesity and T2D in the clinical setting. © 2017 IUBMB Life, 69(2):63-71, 2017.
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Affiliation(s)
- Yuanyuan Li
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wenzhuo Ran
- Department of Clinical Laboratory, Wuhan No. 1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiaqiang Zhang
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Shi Chen
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Yihang Li
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Deng Luo
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Chen Wang
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Weiping Jia
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Sinningen K, Thiele S, Hofbauer LC, Rauner M. Role of milk fat globule-epidermal growth factor 8 in osteoimmunology. BONEKEY REPORTS 2016; 5:820. [PMID: 27579162 DOI: 10.1038/bonekey.2016.52] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/06/2016] [Indexed: 11/09/2022]
Abstract
Milk fat globule-epidermal growth factor 8 (MFG-E8) is a glycoprotein that is abundantly expressed in various tissues and has a pivotal role in the phagocytic clearance of apoptotic cells. However, MFG-E8 has also gained significant attention because of its wide range of functions in autoimmunity, inflammation and tissue homeostasis. More recently, MFG-E8 has been identified as a critical regulator of bone homeostasis, being expressed in both, osteoblasts and osteoclasts. In addition, it was shown that MFG-E8 fulfils an active role in modulating inflammatory processes, suggesting an anti-inflammatory role of MFG-E8 and proposing it as a novel therapeutic target for inflammatory diseases. This concise review focusses on the expression and regulation of MFG-E8 in the context of inflammatory bone diseases, highlights its role in the pathophysiology of osteoimmune diseases and discusses the therapeutic potential of MFG-E8.
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Affiliation(s)
- Kathrin Sinningen
- Department of Obstetrics and Gynecology, Heinrich Heine University Düsseldorf , Düsseldorf, Germany
| | - Sylvia Thiele
- Department of Medicine III, Division of Endocrinology, Diabetes, and Bone Diseases, Technische Universität Dresden , Dresden, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III, Division of Endocrinology, Diabetes, and Bone Diseases, Technische Universität Dresden, Dresden, Germany; DFG Research Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III, Division of Endocrinology, Diabetes, and Bone Diseases, Technische Universität Dresden , Dresden, Germany
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Functional Role of Milk Fat Globule-Epidermal Growth Factor VIII in Macrophage-Mediated Inflammatory Responses and Inflammatory/Autoimmune Diseases. Mediators Inflamm 2016; 2016:5628486. [PMID: 27429513 PMCID: PMC4939324 DOI: 10.1155/2016/5628486] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 05/25/2016] [Indexed: 01/14/2023] Open
Abstract
Inflammation involves a series of complex biological processes mediated by innate immunity for host defense against pathogen infection. Chronic inflammation is considered to be one of the major causes of serious diseases, including a number of autoimmune/inflammatory diseases, cancers, cardiovascular diseases, and neurological diseases. Milk fat globule-epidermal growth factor 8 (MFG-E8) is a secreted protein found in vertebrates and was initially discovered as a critical component of the milk fat globule. Previously, a number of studies have reported that MFG-E8 contributes to various biological functions including the phagocytic removal of damaged and apoptotic cells from tissues, the induction of VEGF-mediated neovascularization, the maintenance of intestinal epithelial homeostasis, and the promotion of mucosal healing. Recently, emerging studies have reported that MFG-E8 plays a role in inflammatory responses and inflammatory/autoimmune diseases. This review describes the characteristics of MFG-E8-mediated signaling pathways, summarizes recent findings supporting the roles of MFG-E8 in inflammatory responses and inflammatory/autoimmune diseases, and discusses MFG-E8 targeting as a potential therapeutic strategy for the development of anti-inflammatory/autoimmune disease drugs.
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