1
|
Qiu R, Lei Y, Yang Q, Zeng J, Zhou Y, Sun B, Sun Y. Identification and functional analysis of lysophosphatidic acid phosphatase type 6 (ACP6) gene in golden pompano (Trachinotusovatus). FISH & SHELLFISH IMMUNOLOGY 2024; 154:109904. [PMID: 39276813 DOI: 10.1016/j.fsi.2024.109904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 09/11/2024] [Accepted: 09/11/2024] [Indexed: 09/17/2024]
Abstract
Golden pompano (Trachinotus ovatus), a marine farmed fish, is economically valuable in China. Lysophosphatidic acid phosphatase type 6 (ACP6) is a type of histidine acid phosphatase and plays an important role in regulating host inflammatory responses and anti-cancer effects in mammals. However, its function in teleost remains unknown. The present study aimed to investigate ACP6 function in golden pompano. ACP6 from golden pompano was identified, cloned, and named TroACP6. The open reading frame of TroACP6 was 1275 bp in length, encoding 424 amino acids. The TroACP6 protein shared high sequence identity (43.32%-90.57 %) with the ACP6 of other species. It contained a histidine phosphatase domain with the active site motif "RHGART" and the catalytic dipeptide HD (histidine and aspartate). Meanwhile, TroACP6 mRNA was widely distributed in the various tissues of healthy golden pompano, with the maximum expression in the head kidney. The function of TroACP6 was analyzed both in vitro and in vivo, and the results revealed that the purified recombinant TroACP6 protein exhibited optimum phosphatase activity at pH 6.0 and 50 °C in vitro. Meanwhile, upon Edwardsiella tarda challenge, TroACP6 expression in tissues increased significantly in vivo. In addition, TroACP6 overexpression enhanced the respiratory burst activity and superoxide dismutase activity of head kidney macrophages in vivo. Furthermore, the overexpression and knockdown of TroACP6 in vivo had a significant effect on bacterial infection. In summary, the study findings indicate that TroACP6 in golden pompano is involved in host defense against bacterial infection.
Collapse
Affiliation(s)
- Reng Qiu
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Nanyang Normal University, Nanyang, 473061, China
| | - Yang Lei
- School of Breeding and Multiplication (Sanya Institute of Breedingand Multiplication), HainanUniversity, Sanya, Hainan, 572022, China
| | - Qiaoli Yang
- Yantai Scibio Biotechnology Co., Ltd, Yantai, 264000, China
| | - Jian Zeng
- School of Breeding and Multiplication (Sanya Institute of Breedingand Multiplication), HainanUniversity, Sanya, Hainan, 572022, China
| | - Yongcan Zhou
- School of Breeding and Multiplication (Sanya Institute of Breedingand Multiplication), HainanUniversity, Sanya, Hainan, 572022, China
| | - Bin Sun
- Institute of Ocean Research, Fujian Polytechnic Normal University, Fuzhou, 350300, China
| | - Yun Sun
- School of Breeding and Multiplication (Sanya Institute of Breedingand Multiplication), HainanUniversity, Sanya, Hainan, 572022, China.
| |
Collapse
|
2
|
Yılmaz D, Marques FC, Fischer Y, Zimmermann S, Hwang G, Atkins PR, Mathavan N, Singh A, de Souza PP, Kuhn GA, Wehrle E, Müller R. Elucidating the mechano-molecular dynamics of TRAP activity using CRISPR/Cas9 mediated fluorescent reporter mice. Heliyon 2024; 10:e32949. [PMID: 39021958 PMCID: PMC11252717 DOI: 10.1016/j.heliyon.2024.e32949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/22/2024] [Accepted: 06/12/2024] [Indexed: 07/20/2024] Open
Abstract
Osteoclasts are essential for bone remodeling by adapting their resorptive activity in response to their mechanical in vivo environment. However, the molecular mechanisms underlying this process remain unclear. Here, we demonstrated the role of tartrate-resistant acid phosphatase (TRAP, Acp5), a key enzyme secreted by osteoclasts, in bone remodeling and mechanosensitivity. Using CRISPR/Cas9 reporter mice, we demonstrated bone cell reporter (BCRIbsp/Acp5) mice feature fluorescent TRAP-deficient osteoclasts and examined their activity during mechanically driven trabecular bone remodeling. Although BCRIbsp/Acp5 mice exhibited trabecular bone impairments and reduced resorption capacity in vitro, RNA sequencing revealed unchanged levels of key osteoclast-associated genes such as Ctsk, Mmp9, and Calcr. These findings, in conjunction with serum carboxy-terminal collagen crosslinks (CTX) and in vivo mechanical loading outcomes collectively indicated an unaltered bone resorption capacity of osteoclasts in vivo. Furthermore, we demonstrated similar mechanoregulation during trabecular bone remodeling in BCRIbsp/Acp5 and wild-type (WT) mice. Hence, this study provides valuable insights into the dynamics of TRAP activity in the context of bone remodeling and mechanosensation.
Collapse
Affiliation(s)
- Dilara Yılmaz
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | | | | | | | - Gaonhae Hwang
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Penny R. Atkins
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, USA
| | | | - Amit Singh
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Pedro P.C. de Souza
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- Innovation in Biomaterials Laboratory, School of Dentistry, Federal University of Goiás, Goiânia, Brazil
| | - Gisela A. Kuhn
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Esther Wehrle
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- AO Research Institute Davos, Davos Platz, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| |
Collapse
|
3
|
Kirschenbaum D, Xie K, Ingelfinger F, Katzenelenbogen Y, Abadie K, Look T, Sheban F, Phan TS, Li B, Zwicky P, Yofe I, David E, Mazuz K, Hou J, Chen Y, Shaim H, Shanley M, Becker S, Qian J, Colonna M, Ginhoux F, Rezvani K, Theis FJ, Yosef N, Weiss T, Weiner A, Amit I. Time-resolved single-cell transcriptomics defines immune trajectories in glioblastoma. Cell 2024; 187:149-165.e23. [PMID: 38134933 DOI: 10.1016/j.cell.2023.11.032] [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: 05/02/2023] [Revised: 09/15/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023]
Abstract
Deciphering the cell-state transitions underlying immune adaptation across time is fundamental for advancing biology. Empirical in vivo genomic technologies that capture cellular dynamics are currently lacking. We present Zman-seq, a single-cell technology recording transcriptomic dynamics across time by introducing time stamps into circulating immune cells, tracking them in tissues for days. Applying Zman-seq resolved cell-state and molecular trajectories of the dysfunctional immune microenvironment in glioblastoma. Within 24 hours of tumor infiltration, cytotoxic natural killer cells transitioned to a dysfunctional program regulated by TGFB1 signaling. Infiltrating monocytes differentiated into immunosuppressive macrophages, characterized by the upregulation of suppressive myeloid checkpoints Trem2, Il18bp, and Arg1, over 36 to 48 hours. Treatment with an antagonistic anti-TREM2 antibody reshaped the tumor microenvironment by redirecting the monocyte trajectory toward pro-inflammatory macrophages. Zman-seq is a broadly applicable technology, enabling empirical measurements of differentiation trajectories, which can enhance the development of more efficacious immunotherapies.
Collapse
Affiliation(s)
- Daniel Kirschenbaum
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ken Xie
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Florian Ingelfinger
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | | | - Kathleen Abadie
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Thomas Look
- Department of Neurology, Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Fadi Sheban
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Truong San Phan
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Baoguo Li
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Pascale Zwicky
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ido Yofe
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Eyal David
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Kfir Mazuz
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Jinchao Hou
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Yun Chen
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hila Shaim
- Department of Stem Cell Transplantation and Cellular Therapy, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mayra Shanley
- Department of Stem Cell Transplantation and Cellular Therapy, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Soeren Becker
- Institute of Computational Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Jiawen Qian
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Florent Ginhoux
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Singapore Immunology Network (SIgN), Agency for Science, Technology and Research, Singapore 138648, Singapore; Singapore Immunology Network (SIgN), Agency for Science, Technology and Research, Singapore 138648, Singapore
| | - Katayoun Rezvani
- Department of Stem Cell Transplantation and Cellular Therapy, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Fabian J Theis
- Institute of Computational Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Nir Yosef
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel; Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA, USA; Center for Computational Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Tobias Weiss
- Department of Neurology, Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Assaf Weiner
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ido Amit
- Department of Systems Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel.
| |
Collapse
|
4
|
Cho CY, Kang SH, Kim BC, Kim TK, Kim JH, Kim M, Sohn Y, Jung HS. Gleditsiae fructus regulates osteoclastogenesis by inhibiting the c‑Fos/NFATc1 pathway and alleviating bone loss in an ovariectomy model. Mol Med Rep 2023; 28:187. [PMID: 37594079 PMCID: PMC10463233 DOI: 10.3892/mmr.2023.13074] [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: 05/24/2023] [Accepted: 07/21/2023] [Indexed: 08/19/2023] Open
Abstract
Medical and economic developments have allowed the human lifespan to extend and, as a result, the elderly population has increased worldwide. Osteoporosis is a common geriatric disease that has no symptoms and even a small impact can cause fractures in patients, leading to a serious deterioration in the quality of life. Osteoporosis treatment typically involves bisphosphonates and selective estrogen receptor modulators. However, these treatments are known to cause severe side effects, such as mandibular osteonecrosis and breast cancer, if used for an extended period of time. Therefore, it is essential to develop therapeutic agents from natural products that have fewer side effects. Gleditsiae fructus (GF) is a dried or immature fruit of Gleditsia sinensis Lam. and is composed of various triterpenoid saponins. The anti‑inflammatory effect of GF has been confirmed in various diseases, and since the anti‑inflammatory effect plays a major role in inhibiting osteoclast differentiation, GF was expected to be effective in osteoclast differentiation and menopausal osteoporosis; however, to the best of our knowledge, it has not yet been studied. Therefore, the present study was designed to examine the effect of GF on osteoclastogenesis and to investigate the mechanism underlying inhibition of osteoclast differentiation. The effects of GF on osteoclastogenesis were determined in vitro by tartrate‑resistant acid phosphatase (TRAP) staining, pit formation assays, filamentous actin (F‑actin) ring formation assays, western blotting and reverse transcription‑quantitative PCR analyses. Furthermore, the administration of GF to an animal model exhibiting menopausal osteoporosis allowed for the analysis of alterations in the bone microstructure of the femur using micro‑CT. Additionally, assessments of femoral tissue and serum were conducted. The present study revealed that the administration of GF resulted in a reduction in osteoclast levels, F‑actin rings, TRAP activity and pit area. Furthermore, GF showed a dose‑dependent suppression of nuclear factor of activated T‑cells cytoplasmic, c‑Fos and other osteoclastogenesis‑related markers.
Collapse
Affiliation(s)
- Chang-Young Cho
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Se Hwang Kang
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Byung-Chan Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Tae-Kyu Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Jae-Hyun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Minsun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Youngjoo Sohn
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Hyuk-Sang Jung
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| |
Collapse
|
5
|
Chauvin C, Alvarez-Simon D, Radulovic K, Boulard O, Laine W, Delacre M, Waldschmitt N, Segura E, Kluza J, Chamaillard M, Poulin LF. NOD2 in monocytes negatively regulates macrophage development through TNFalpha. Front Immunol 2023; 14:1181823. [PMID: 37415975 PMCID: PMC10320732 DOI: 10.3389/fimmu.2023.1181823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/23/2023] [Indexed: 07/08/2023] Open
Abstract
Objective It is believed that intestinal recruitment of monocytes from Crohn's Disease (CD) patients who carry NOD2 risk alleles may repeatedly give rise to recruitment of pathogenic macrophages. We investigated an alternative possibility that NOD2 may rather inhibit their differentiation from intravasating monocytes. Design The monocyte fate decision was examined by using germ-free mice, mixed bone marrow chimeras and a culture system yielding macrophages and monocyte-derived dendritic cells (mo-DCs). Results We observed a decrease in the frequency of mo-DCs in the colon of Nod2-deficient mice, despite a similar abundance of monocytes. This decrease was independent of the changes in the gut microbiota and dysbiosis caused by Nod2 deficiency. Similarly, the pool of mo-DCs was poorly reconstituted in a Nod2-deficient mixed bone marrow (BM) chimera. The use of pharmacological inhibitors revealed that activation of NOD2 during monocyte-derived cell development, dominantly inhibits mTOR-mediated macrophage differentiation in a TNFα-dependent manner. These observations were supported by the identification of a TNFα-dependent response to muramyl dipeptide (MDP) that is specifically lost when CD14-expressing blood cells bear a frameshift mutation in NOD2. Conclusion NOD2 negatively regulates a macrophage developmental program through a feed-forward loop that could be exploited for overcoming resistance to anti-TNF therapy in CD.
Collapse
Affiliation(s)
- Camille Chauvin
- U1019, Institut Pasteur de Lille, Univ. Lille, Centre National de la Recherche Scientifique, Inserm, Centre Hospitalo- Universitaire Lille, Lille, France
- INSERM U1138, Centre de Recherche des Cordeliers, Paris, France
| | - Daniel Alvarez-Simon
- U1019, Institut Pasteur de Lille, Univ. Lille, Centre National de la Recherche Scientifique, Inserm, Centre Hospitalo- Universitaire Lille, Lille, France
| | - Katarina Radulovic
- Unité de Recherche Clinique, Centre Hospitalier de Valenciennes, Valenciennes CEDEX, France
| | | | - William Laine
- UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, University Lille, Lille, France
| | - Myriam Delacre
- U1019, Institut Pasteur de Lille, Univ. Lille, Centre National de la Recherche Scientifique, Inserm, Centre Hospitalo- Universitaire Lille, Lille, France
| | - Nadine Waldschmitt
- Chair of Nutrition and Immunology, School of Life Sciences, Technische Universität München, Freising-Weihenstephan, Germany
| | - Elodie Segura
- INSERM U932, Institut Curie, Paris Sciences et Lettres Research University, Paris, France
| | - Jérome Kluza
- UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, University Lille, Lille, France
| | | | | |
Collapse
|
6
|
Lei Y, Fu S, Yang Y, Chen J, Li B, Guo Z, Ye J. Identification and Functional Analysis of Tartrate-Resistant Acid Phosphatase Type 5b (TRAP5b) in Oreochromis niloticus. Int J Mol Sci 2023; 24:7179. [PMID: 37108342 PMCID: PMC10138680 DOI: 10.3390/ijms24087179] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Tartrate-resistant acid phosphatase type 5 (TRAP5) is an enzyme that is highly expressed in activated macrophages and osteoclasts and plays important biological functions in mammalian immune defense systems. In the study, we investigated the functions of tartrate-resistant acid phosphatase type 5b from Oreochromis niloticus (OnTRAP5b). The OnTRAP5b gene has an open reading frame of 975 bp, which encodes a mature peptide consisting of 302 amino acids with a molecular weight of 33.448 kDa. The OnTRAP5b protein contains a metallophosphatase domain with metal binding and active sites. Phylogenetic analysis revealed that OnTRAP5b is clustered with TRAP5b of teleost fish and shares a high amino acid sequence similarity with other TRAP5b in teleost fish (61.73-98.15%). Tissues expression analysis showed that OnTRAP5b was most abundant in the liver and was also widely expressed in other tissues. Upon challenge with Streptococcus agalactiae and Aeromonas hydrophila in vivo and in vitro, the expression of OnTRAP5b was significantly up-regulated. Additionally, the purified recombinant OnTRAP5b ((r)OnTRAP5) protein exhibited optimal phosphatase activity at pH 5.0 and an ideal temperature of 50 °C. The Vmax, Km, and kcat of purified (r)OnTRAP5b were found to be 0.484 μmol × min-1 × mg-1, 2.112 mM, and 0.27 s-1 with respect to pNPP as a substrate, respectively. Its phosphatase activity was differentially affected by metal ions (K+, Na+, Mg2+, Ca2+, Mn2+, Cu2+, Zn2+, and Fe3+) and inhibitors (sodium tartrate, sodium fluoride, and EDTA). Furthermore, (r)OnTRAP5b was found to promote the expression of inflammatory-related genes in head kidney macrophages and induce reactive oxygen expression and phagocytosis. Moreover, OnTRAP5b overexpression and knockdown had a significant effect on bacterial proliferation in vivo. When taken together, our findings suggest that OnTRAP5b plays a significant role in the immune response against bacterial infection in Nile tilapia.
Collapse
Affiliation(s)
- Yang Lei
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Shengli Fu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Engineering Technology Research Center for Environmentally-Friendly Aquaculture, South China Normal University, Guangzhou 510631, China
| | - Yanjian Yang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Jianlin Chen
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Bingxi Li
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Zheng Guo
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Jianmin Ye
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Engineering Technology Research Center for Environmentally-Friendly Aquaculture, South China Normal University, Guangzhou 510631, China
| |
Collapse
|
7
|
Lei Y, Cao Z, Hou Y, Du X, Zhang H, Du H, Zhou Y, Sun Y. Molecular characterization and functional analysis of tartrate-resistant acid phosphatase (ACP5) gene in red drum (Sciaenops ocellatus). FISH & SHELLFISH IMMUNOLOGY 2023; 132:108495. [PMID: 36566835 DOI: 10.1016/j.fsi.2022.108495] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Tartrate-resistant acid phosphatase (ACP5) plays an important biological function in immune defense and is highly expressed in activated macrophages, osteoclasts and dendritic cells. In teleost, the functionality of ACP5 remains to be revealed. In this study, we cloned and identified SoACP5 from red drum (Sciaenops ocellatus) and analyzed its function in vivo and in vitro. The open reading frame of SoACP5 is 1002 bp in length, encoding 333 amino acids. SoACP5 shares high sequence identities (96.70%-49.25%) with ACP5 of other species. The SoACP5 mRNA was widely distributed in collected tissues of healthy red drum, and with the maximum in gills. The expression of SoACP5 increased significantly in vivo following challenge with Edwardsiella tarda. Moreover, the recombinant SoACP5 protein (rSoACP5) was purified with his-tag band resin columns, and confirmed to have phosphatase activity which was optimal at pH 5 and 55 °C. Various metal ions (K+, Zn2+, Mn2+, Mg2+, Ca2+, Cu2+, Fe2+ and Fe3+) have different effects on phosphatase activity. rSoACP5 induced the cellular proliferation of peripheral blood leukocytes. The over-expression and knockdown of SoACP5 in vivo had a significant effect on bacterial proliferation. Furthermore, both of the antibacterial activity and phosphatase activity were decreased when the reducedSoACP5 was oxidized by H2O2. In summary, the present study indicated that SoACP5 is likely involved in host defense against bacterial infection in S. ocellatus.
Collapse
Affiliation(s)
- Yang Lei
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China
| | - Zhenjie Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, 570228, PR China
| | - Yongwei Hou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China
| | - Xiangyu Du
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China
| | - Han Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China
| | - Hehe Du
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China
| | - Yongcan Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China.
| | - Yun Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China; Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, 570228, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China.
| |
Collapse
|
8
|
Tanner L, Bergwik J, Bhongir RKV, Puthia M, Lång P, Ali MN, Welinder C, Önnerfjord P, Erjefält JS, Palmberg L, Andersson G, Egesten A. Tartrate resistant acid phosphatase 5 (TRAP5) mediates immune cell recruitment in a murine model of pulmonary bacterial infection. Front Immunol 2022; 13:1079775. [PMID: 36569898 PMCID: PMC9779928 DOI: 10.3389/fimmu.2022.1079775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/18/2022] [Indexed: 12/13/2022] Open
Abstract
Introduction During airway infection, upregulation of proinflammatory cytokines and subsequent immune cell recruitment is essential to mitigate bacterial infection. Conversely, during prolonged and non-resolving airway inflammation, neutrophils contribute to tissue damage and remodeling. This occurs during diseases including cystic fibrosis (CF) and COPD where bacterial pathogens, not least Pseudomonas aeruginosa, contribute to disease progression through long-lasting infections. Tartrate-resistant acid phosphatase (TRAP) 5 is a metalloenzyme expressed by alveolar macrophages and one of its target substrates is the phosphoglycoprotein osteopontin (OPN). Methods We used a knockout mouse strain (Trap5-/-) and BALB/c-Tg (Rela-luc)31Xen mice paired with siRNA administration or functional protein add-back to elucidate the role of Trap5 during bacterial infection. In a series of experiments, Trap5-/- and wild-type control mice received intratracheal administration of P.aerugniosa (Xen41) or LPS, with mice monitored using intravital imaging (IVIS). In addition, multiplex cytokine immunoassays, flow cytometry, multispectral analyses, histological staining were performed. Results In this study, we found that Trap5-/- mice had impaired clearance of P. aeruginosa airway infection and reduced recruitment of immune cells (i.e. neutrophils and inflammatory macrophages). Trap5 knockdown using siRNA resulted in a decreased activation of the proinflammatory transcription factor NF-κB in reporter mice and a subsequent decrease of proinflammatory gene expression. Add-back experiments of enzymatically active TRAP5 to Trap5-/- mice restored immune cell recruitment and bacterial killing. In human CF lung tissue, TRAP5 of alveolar macrophages was detected in proximity to OPN to a higher degree than in normal lung tissue, indicating possible interactions. Discussion Taken together, the findings of this study suggest a key role for TRAP5 in modulating airway inflammation. This could have bearing in diseases such as CF and COPD where excessive neutrophilic inflammation could be targeted by pharmacological inhibitors of TRAP5.
Collapse
Affiliation(s)
- Lloyd Tanner
- Respiratory Medicine, Allergology & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Jesper Bergwik
- Respiratory Medicine, Allergology & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Ravi K. V. Bhongir
- Respiratory Medicine, Allergology & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Manoj Puthia
- Department of Dermatology and Venereology, Lund University and Skåne University Hospital, Lund, Sweden,Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Pernilla Lång
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Mohamad N. Ali
- Respiratory Medicine, Allergology & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Charlotte Welinder
- Swedish National Infrastructure for Biological Mass Spectrometry (BioMS), Lund University, Lund, Sweden
| | - Patrik Önnerfjord
- Molecular Skeletal Biology, Section for Rheumatology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Jonas S. Erjefält
- Unit of Airway Inflammation, Experimental Medical Sciences, Lund University, Lund, Sweden
| | - Lena Palmberg
- Work Environment Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Solna, Sweden
| | - Göran Andersson
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Arne Egesten
- Respiratory Medicine, Allergology & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden,*Correspondence: Arne Egesten,
| |
Collapse
|
9
|
Pro-oxidative priming but maintained cardiac function in a broad spectrum of murine models of chronic kidney disease. Redox Biol 2022; 56:102459. [PMID: 36099852 PMCID: PMC9482130 DOI: 10.1016/j.redox.2022.102459] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 11/24/2022] Open
Abstract
Aims Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular events and exhibit myocardial changes including left ventricular (LV) hypertrophy and fibrosis, overall referred to as ‘uremic cardiomyopathy’. Although different CKD animal models have been studied for cardiac effects, lack of consistent reporting on cardiac function and pathology complicates clear comparison of these models. Therefore, this study aimed at a systematic and comprehensive comparison of cardiac function and cardiac pathophysiological characteristics in eight different CKD models and mouse strains, with a main focus on adenine-induced CKD. Methods and results CKD of different severity and duration was induced by subtotal nephrectomy or adenine-rich diet in various strains (C57BL/6J, C57BL/6 N, hyperlipidemic C57BL/6J ApoE−/−, 129/Sv), followed by the analysis of kidney function and morphology, blood pressure, cardiac function, cardiac hypertrophy, fibrosis, myocardial calcification and inflammation using functional, histological and molecular techniques, including cardiac gene expression profiling supplemented by oxidative stress analysis. Intriguingly, despite uremia of variable degree, neither cardiac dysfunction, hypertrophy nor interstitial fibrosis were observed. However, already moderate CKD altered cardiac oxidative stress responses and enhanced oxidative stress markers in each mouse strain, with cardiac RNA sequencing revealing activation of oxidative stress signaling as well as anti-inflammatory feedback responses. Conclusion This study considerably expands the knowledge on strain- and protocol-specific differences in the field of cardiorenal research and reveals that several weeks of at least moderate experimental CKD increase oxidative stress responses in the heart in a broad spectrum of mouse models. However, this was insufficient to induce relevant systolic or diastolic dysfunction, suggesting that additional “hits” are required to induce uremic cardiomyopathy. Translational perspective Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular adverse events and exhibit myocardial changes, overall referred to as ‘uremic cardiomyopathy’. We revealed that CKD increases cardiac oxidative stress responses in the heart. Nonetheless, several weeks of at least moderate experimental CKD do not necessarily trigger cardiac dysfunction and remodeling, suggesting that additional “hits” are required to induce uremic cardiomyopathy in the clinical setting. Whether the altered cardiac oxidative stress balance in CKD may increase the risk and extent of cardiovascular damage upon additional cardiovascular risk factors and/or events will be addressed in future studies. Development of a CKD mouse model with a clear cardiac functional or morphological phenotype is challenging. Cardiac oxidative stress response as well as oxidative stress markers are increased in a broad spectrum of CKD mouse models. Our findings suggest need of additional cardiovascular hits to clearly induce uremic cardiomyopathy as observed in patients.
Collapse
|
10
|
He Y, Zang X, Kuang J, Yang H, Gu T, Yang J, Li Z, Zheng E, Xu Z, Cai G, Wu Z, Hong L. iTRAQ-based quantitative proteomic analysis of porcine uterine fluid during pre-implantation period of pregnancy. J Proteomics 2022; 261:104570. [DOI: 10.1016/j.jprot.2022.104570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/28/2022] [Accepted: 03/19/2022] [Indexed: 10/18/2022]
|
11
|
Walsh SM, Sheridan RM, Lucas ED, Doan TA, Ware BC, Schafer J, Fu R, Burchill MA, Hesselberth JR, Tamburini BAJ. Molecular tracking devices quantify antigen distribution and archiving in the murine lymph node. eLife 2021; 10:e62781. [PMID: 33843587 PMCID: PMC8116055 DOI: 10.7554/elife.62781] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 04/09/2021] [Indexed: 01/02/2023] Open
Abstract
The detection of foreign antigens in vivo has relied on fluorescent conjugation or indirect read-outs such as antigen presentation. In our studies, we found that these widely used techniques had several technical limitations that have precluded a complete picture of antigen trafficking or retention across lymph node cell types. To address these limitations, we developed a 'molecular tracking device' to follow the distribution, acquisition, and retention of antigen in the lymph node. Utilizing an antigen conjugated to a nuclease-resistant DNA tag, acting as a combined antigen-adjuvant conjugate, and single-cell mRNA sequencing, we quantified antigen abundance in the lymph node. Variable antigen levels enabled the identification of caveolar endocytosis as a mechanism of antigen acquisition or retention in lymphatic endothelial cells. Thus, these molecular tracking devices enable new approaches to study dynamic tissue dissemination of antigen-adjuvant conjugates and identify new mechanisms of antigen acquisition and retention at cellular resolution in vivo.
Collapse
Affiliation(s)
- Shannon M Walsh
- Department of Biochemistry and Molecular Genetics, University of Colorado School of MedicineAuroraUnited States
| | - Ryan M Sheridan
- RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
| | - Erin D Lucas
- Immunology Graduate Program, University of Colorado School of MedicineAuroraUnited States
- Department of Immunology and Microbiology, University of Colorado School of MedicineAuroraUnited States
| | - Thu A Doan
- Immunology Graduate Program, University of Colorado School of MedicineAuroraUnited States
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of MedicineAuroraUnited States
| | - Brian C Ware
- Immunology Graduate Program, University of Colorado School of MedicineAuroraUnited States
- Department of Immunology and Microbiology, University of Colorado School of MedicineAuroraUnited States
| | - Johnathon Schafer
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of MedicineAuroraUnited States
| | - Rui Fu
- RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
| | - Matthew A Burchill
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of MedicineAuroraUnited States
| | - Jay R Hesselberth
- Department of Biochemistry and Molecular Genetics, University of Colorado School of MedicineAuroraUnited States
- RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
| | - Beth Ann Jiron Tamburini
- Immunology Graduate Program, University of Colorado School of MedicineAuroraUnited States
- Department of Immunology and Microbiology, University of Colorado School of MedicineAuroraUnited States
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of MedicineAuroraUnited States
| |
Collapse
|
12
|
Li Z, Xiao J, Xu X, Li W, Zhong R, Qi L, Chen J, Cui G, Wang S, Zheng Y, Qiu Y, Li S, Zhou X, Lu Y, Lyu J, Zhou B, Zhou J, Jing N, Wei B, Hu J, Wang H. M-CSF, IL-6, and TGF-β promote generation of a new subset of tissue repair macrophage for traumatic brain injury recovery. SCIENCE ADVANCES 2021; 7:7/11/eabb6260. [PMID: 33712456 PMCID: PMC7954455 DOI: 10.1126/sciadv.abb6260] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 12/18/2020] [Indexed: 05/13/2023]
Abstract
Traumatic brain injury (TBI) leads to high mortality rate. We aimed to identify the key cytokines favoring TBI repair and found that patients with TBI with a better outcome robustly increased concentrations of macrophage colony-stimulating factor, interleukin-6, and transforming growth factor-β (termed M6T) in cerebrospinal fluid or plasma. Using TBI mice, we identified that M2-like macrophage, microglia, and endothelial cell were major sources to produce M6T. Together with the in vivo tracking of mCherry+ macrophages in zebrafish models, we confirmed that M6T treatment accelerated blood-borne macrophage infiltration and polarization toward a subset of tissue repair macrophages that expressed similar genes as microglia for neuroprotection, angiogenesis and cell migration. M6T therapy in TBI mice and zebrafish improved neurological function while blocking M6T-exacerbated brain injury. Considering low concentrations of M6T in some patients with poor prognostic, M6T treatment might repair TBI via generating a previously unidentified subset of tissue repair macrophages.
Collapse
Affiliation(s)
- Zhiqi Li
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
- Neurosurgical Institute, Fudan University, Shanghai 200040 China
| | - Jun Xiao
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaoyan Xu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
- Experimental Immunology Branch, National Cancer Institute, U.S. National Institutes of Health, Bethesda, MD, USA
| | - Weiyun Li
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
- School of Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - Ruiyue Zhong
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Linlin Qi
- School of Life Sciences, Shanghai University, Shanghai 200444, China
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Jiehui Chen
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Guizhong Cui
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Shuang Wang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Yuxiao Zheng
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Ying Qiu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Sheng Li
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xin Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
- Cancer Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yao Lu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Jiaying Lyu
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - Bin Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Jiawei Zhou
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai 200031, China
| | - Naihe Jing
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Bin Wei
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Cancer Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jin Hu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China.
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
- Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China
| | - Hongyan Wang
- Neurosurgical Institute, Fudan University, Shanghai 200040 China.
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| |
Collapse
|
13
|
Disproportionate left atrial myopathy in heart failure with preserved ejection fraction among participants of the PROMIS-HFpEF study. Sci Rep 2021; 11:4885. [PMID: 33649383 PMCID: PMC7921666 DOI: 10.1038/s41598-021-84133-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 01/01/2021] [Indexed: 01/10/2023] Open
Abstract
Impaired left atrial (LA) function in heart failure with preserved ejection fraction (HFpEF) is associated with adverse outcomes. A subgroup of HFpEF may have LA myopathy out of proportion to left ventricular (LV) dysfunction; therefore, we sought to characterize HFpEF patients with disproportionate LA myopathy. In the prospective, multicenter, Prevalence of Microvascular Dysfunction in HFpEF study, we defined disproportionate LA myopathy based on degree of LA reservoir strain abnormality in relation to LV myopathy (LV global longitudinal strain [GLS]) by calculating the residuals from a linear regression of LA reservoir strain and LV GLS. We evaluated associations of disproportionate LA myopathy with hemodynamics and performed a plasma proteomic analysis to identify proteins associated with disproportionate LA myopathy; proteins were validated in an independent sample. Disproportionate LA myopathy correlated with better LV diastolic function but was associated with lower stroke volume reserve after passive leg raise independent of atrial fibrillation (AF). Additionally, disproportionate LA myopathy was associated with higher pulmonary artery systolic pressure, higher pulmonary vascular resistance, and lower coronary flow reserve. Of 248 proteins, we identified and validated 5 proteins (involved in cardiomyocyte stretch, extracellular matrix remodeling, and inflammation) that were associated with disproportionate LA myopathy independent of AF. In HFpEF, LA myopathy may exist out of proportion to LV myopathy. Disproportionate LA myopathy is a distinct HFpEF subtype associated with worse hemodynamics and a distinct proteomic signature, independent of AF.
Collapse
|
14
|
Corbin AL, Gomez-Vazquez M, Berthold DL, Attar M, Arnold IC, Powrie FM, Sansom SN, Udalova IA. IRF5 guides monocytes toward an inflammatory CD11c + macrophage phenotype and promotes intestinal inflammation. Sci Immunol 2020; 5:5/47/eaax6085. [PMID: 32444476 DOI: 10.1126/sciimmunol.aax6085] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 04/02/2020] [Indexed: 12/11/2022]
Abstract
Mononuclear phagocytes (MNPs) are vital for maintaining intestinal homeostasis but, in response to acute microbial stimulation, can also trigger immunopathology, accelerating recruitment of Ly6Chi monocytes to the gut. The regulators that control monocyte tissue adaptation in the gut remain poorly understood. Interferon regulatory factor 5 (IRF5) is a transcription factor previously shown to play a key role in maintaining the inflammatory phenotype of macrophages. Here, we investigate the impact of IRF5 on the MNP system and physiology of the gut at homeostasis and during inflammation. We demonstrate that IRF5 deficiency has a limited impact on colon physiology at steady state but ameliorates immunopathology during Helicobacter hepaticus-induced colitis. Inhibition of IRF5 activity in MNPs phenocopies global IRF5 deficiency. Using a combination of bone marrow chimera and single-cell RNA-sequencing approaches, we examined the intrinsic role of IRF5 in controlling colonic MNP development. We demonstrate that IRF5 promotes differentiation of Ly6Chi monocytes into CD11c+ macrophages and controls the production of antimicrobial and inflammatory mediators by these cells. Thus, we identify IRF5 as a key transcriptional regulator of the colonic MNP system during intestinal inflammation.
Collapse
Affiliation(s)
| | | | | | - Moustafa Attar
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Isabelle C Arnold
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,Institut für Molekulare Krebsforschung, University of Zurich, Zurich, Switzerland
| | - Fiona M Powrie
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Stephen N Sansom
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.
| | - Irina A Udalova
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.
| |
Collapse
|
15
|
Sama IE, Woolley RJ, Nauta JF, Romaine SPR, Tromp J, Ter Maaten JM, van der Meer P, Lam CSP, Samani NJ, Ng LL, Metra M, Dickstein K, Anker SD, Zannad F, Lang CC, Cleland JGF, van Veldhuisen DJ, Hillege HL, Voors AA. A network analysis to identify pathophysiological pathways distinguishing ischaemic from non-ischaemic heart failure. Eur J Heart Fail 2020; 22:821-833. [PMID: 32243695 PMCID: PMC7319432 DOI: 10.1002/ejhf.1811] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/11/2019] [Accepted: 12/11/2019] [Indexed: 12/12/2022] Open
Abstract
Aims Heart failure (HF) is frequently caused by an ischaemic event (e.g. myocardial infarction) but might also be caused by a primary disease of the myocardium (cardiomyopathy). In order to identify targeted therapies specific for either ischaemic or non‐ischaemic HF, it is important to better understand differences in underlying molecular mechanisms. Methods and results We performed a biological physical protein–protein interaction network analysis to identify pathophysiological pathways distinguishing ischaemic from non‐ischaemic HF. First, differentially expressed plasma protein biomarkers were identified in 1160 patients enrolled in the BIOSTAT‐CHF study, 715 of whom had ischaemic HF and 445 had non‐ischaemic HF. Second, we constructed an enriched physical protein–protein interaction network, followed by a pathway over‐representation analysis. Finally, we identified key network proteins. Data were validated in an independent HF cohort comprised of 765 ischaemic and 100 non‐ischaemic HF patients. We found 21/92 proteins to be up‐regulated and 2/92 down‐regulated in ischaemic relative to non‐ischaemic HF patients. An enriched network of 18 proteins that were specific for ischaemic heart disease yielded six pathways, which are related to inflammation, endothelial dysfunction superoxide production, coagulation, and atherosclerosis. We identified five key network proteins: acid phosphatase 5, epidermal growth factor receptor, insulin‐like growth factor binding protein‐1, plasminogen activator urokinase receptor, and secreted phosphoprotein 1. Similar results were observed in the independent validation cohort. Conclusions Pathophysiological pathways distinguishing patients with ischaemic HF from those with non‐ischaemic HF were related to inflammation, endothelial dysfunction superoxide production, coagulation, and atherosclerosis. The five key pathway proteins identified are potential treatment targets specifically for patients with ischaemic
HF.
Collapse
Affiliation(s)
- Iziah E Sama
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Rebecca J Woolley
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jan F Nauta
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Simon P R Romaine
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, and NIHR Leicester Biomedical Research Centre, Leicester, UK
| | - Jasper Tromp
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Cardiology, National Heart Centre Singapore, Singapore.,Singapore Duke-NUS Graduate Medical School, Singapore
| | - Jozine M Ter Maaten
- Robertson Centre for Biostatistics & Clinical Trials Unit, University of Glasgow and Clinical Cardiology, National Heart & Lung Institute, Imperial College London, London, UK
| | - Peter van der Meer
- Robertson Centre for Biostatistics & Clinical Trials Unit, University of Glasgow and Clinical Cardiology, National Heart & Lung Institute, Imperial College London, London, UK
| | - Carolyn S P Lam
- Singapore Duke-NUS Graduate Medical School, Singapore.,Robertson Centre for Biostatistics & Clinical Trials Unit, University of Glasgow and Clinical Cardiology, National Heart & Lung Institute, Imperial College London, London, UK
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, and NIHR Leicester Biomedical Research Centre, Leicester, UK
| | - Leong L Ng
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, and NIHR Leicester Biomedical Research Centre, Leicester, UK
| | - Marco Metra
- Institute of Cardiology, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Kenneth Dickstein
- University of Bergen, Bergen, Norway.,Stavanger University Hospital, Stavanger, Norway
| | - Stefan D Anker
- Department of Cardiology (CVK) and Berlin-Brandenburg Center for Regenerative Therapies (BCRT); German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Faiez Zannad
- CHU de Nancy, Inserm CIC 1433, Université de Lorrain, CHRU de Nancy, F-CRIN INI-CRCT, Nancy, France
| | - Chim C Lang
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee Ninewells Hospital and Medical School, Dundee, UK
| | - John G F Cleland
- Robertson Centre for Biostatistics & Clinical Trials Unit, University of Glasgow and Clinical Cardiology, National Heart & Lung Institute, Imperial College London, London, UK
| | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Hans L Hillege
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| |
Collapse
|
16
|
Mira-Pascual L, Patlaka C, Desai S, Paulie S, Näreoja T, Lång P, Andersson G. A Novel Sandwich ELISA for Tartrate-Resistant Acid Phosphatase 5a and 5b Protein Reveals that Both Isoforms are Secreted by Differentiating Osteoclasts and Correlate to the Type I Collagen Degradation Marker CTX-I In Vivo and In Vitro. Calcif Tissue Int 2020; 106:194-207. [PMID: 31654098 DOI: 10.1007/s00223-019-00618-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/21/2019] [Indexed: 10/25/2022]
Abstract
Tartrate-resistant acid phosphatase type 5 (TRAP) exists as two isoforms, 5a and 5b. 5b is a marker of osteoclast number and 5a of chronic inflammation; however, its association with bone resorption is unknown. In this study, a double-TRAP 5a/5b sandwich ELISA measuring 5a and 5b protein in the same sample was developed. TRAP 5a and 5b protein levels were evaluated as osteoclast differentiation/activity markers in serum and in culture, and their correlation to the resorption marker CTX-I was examined. Serum TRAP 5a and 5b concentrations in healthy men were 4.4 ± 0.6 ng/ml and 1.3 ± 0.2 ng/ml, respectively, and they correlated moderately to each other suggesting that their secretion is coupled under healthy conditions. A correlation was also observed between serum TRAP 5a and 5b with CTX-I, suggesting that both TRAP isoforms associate with osteoclast number. During osteoclast differentiation on plastic/bone, predominantly 5b increased in media/lysate from M-CSF/RANKL-stimulated CD14+ PBMCs. However, substantial levels of 5a were detected at later stages suggesting that both isoforms are secreted from differentiating OCs. More TRAP 5b was released on bone indicating a connection to osteoclast resorptive activity, and a peak in TRAP 5b/5a-ratio coincided with rapid CTX-I release. At the end of the culture period of M-CSF + RANKL-stimulated CD14+ PBMCs, there was a correlation between the secretion of TRAP 5a and 5b proteins with CTX-I. The correlation of not only 5b but also 5a with collagen degradation, both in serum and osteoclast cultures indicates that a considerable proportion of the TRAP 5a originates from osteoclasts and may reflect a hitherto undisclosed regulatory mechanism during bone resorption and bone remodeling.
Collapse
Affiliation(s)
- Laia Mira-Pascual
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden
| | - Christina Patlaka
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden
| | - Suchita Desai
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden
| | | | - Tuomas Näreoja
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden.
| | - Pernilla Lång
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden.
| | - Göran Andersson
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé, 8, 141 52, Stockholm, Sweden
| |
Collapse
|
17
|
van der Wal HH, Grote Beverborg N, Dickstein K, Anker SD, Lang CC, Ng LL, van Veldhuisen DJ, Voors AA, van der Meer P. Iron deficiency in worsening heart failure is associated with reduced estimated protein intake, fluid retention, inflammation, and antiplatelet use. Eur Heart J 2019; 40:3616-3625. [PMID: 31556953 PMCID: PMC6868426 DOI: 10.1093/eurheartj/ehz680] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/04/2019] [Accepted: 09/10/2019] [Indexed: 12/29/2022] Open
Abstract
AIMS Iron deficiency (ID) is common in heart failure (HF) patients and negatively impacts symptoms and prognosis. The aetiology of ID in HF is largely unknown. We studied determinants and the biomarker profile of ID in a large international HF cohort. METHODS AND RESULTS We studied 2357 worsening HF patients from the BIOSTAT-CHF cohort. ID was defined as transferrin saturation <20%. Univariable and multivariable logistic regression models were constructed to identify determinants for ID. We measured 92 cardiovascular markers (Olink Cardiovascular III) to establish a biomarker profile of ID. The primary endpoint was the composite of all-cause mortality and first HF rehospitalization. Mean age (±standard deviation) of all patients was 69 ± 12.0 years, 26.1% were female and median N-terminal pro B-type natriuretic peptide levels (+interquartile range) were 4305 (2360-8329) ng/L. Iron deficiency was present in 1453 patients (61.6%), with highest prevalence in females (71.1% vs. 58.3%; P < 0.001). Independent determinants of ID were female sex, lower estimated protein intake, higher heart rate, presence of peripheral oedema and orthopnoea, chronic kidney disease, lower haemoglobin, higher C-reactive protein levels, lower serum albumin levels, and P2Y12 inhibitor use (all P < 0.05). None of these determinants were sex-specific. The biomarker profile of ID largely consisted of pro-inflammatory markers, including paraoxonase 3 (PON3) and tartrate-resistant acid phosphatase type 5. In multivariable Cox proportional hazard regression analyses, ID was associated to worse outcome, independently of predictors of ID (hazard ratio 1.25, 95% confidence interval 1.06-1.46; P = 0.007). CONCLUSION Our data suggest that the aetiology of ID in worsening HF is complex, multifactorial and seems to consist of a combination of reduced iron uptake (malnutrition, fluid overload), impaired iron storage (inflammation, chronic kidney disease), and iron loss (antiplatelets).
Collapse
Affiliation(s)
- Haye H van der Wal
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, RB Groningen, The Netherlands
| | - Niels Grote Beverborg
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, RB Groningen, The Netherlands
| | - Kenneth Dickstein
- University of Bergen, Bergen, Norway
- Stavanger University Hospital, Gerd-Ragna Bloch Thorsens Gate 8, Stavanger, Norway
| | - Stefan D Anker
- Division of Cardiology and Metabolism-Heart Failure, Cachexia & Sarcopenia; Department of Cardiology (CVK), Berlin-Brandenburg Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité University Medicine, Charitépl. 1, Berlin, Germany
| | - Chim C Lang
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Ninewells Hospital & Medical School, Dundee, UK
| | - Leong L Ng
- Department of Cardiovascular Sciences, University of Leicester, Groby Road, Leicester, UK
- NIHR Leicester Biomedical Research Unit, Glenfield Hospital, Groby Road, Leicester, UK
| | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, RB Groningen, The Netherlands
| | - Adriaan A Voors
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, RB Groningen, The Netherlands
| | - Peter van der Meer
- Department of Cardiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, RB Groningen, The Netherlands
| |
Collapse
|
18
|
Ben Shlomo S, Mouhadeb O, Cohen K, Varol C, Gluck N. COMMD10-Guided Phagolysosomal Maturation Promotes Clearance of Staphylococcus aureus in Macrophages. iScience 2019; 14:147-163. [PMID: 30959277 PMCID: PMC6453835 DOI: 10.1016/j.isci.2019.03.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 02/28/2019] [Accepted: 03/21/2019] [Indexed: 12/13/2022] Open
Abstract
Staphylococcus aureus is a major cause of infectious disease. Liver Kupffer cells (KCs) are responsible for sequestering and destroying S. aureus through the phagolysosomal pathway. Proteins belonging to the COMMD family emerge as key intracellular regulators of protein trafficking, but the role of COMMD10 in macrophage-mediated S. aureus eradication is unknown. Here we report that COMMD10 in macrophages was necessary for its timely elimination, as demonstrated with two different S. aureus subspecies. In vivo, COMMD10-deficient liver KCs exhibited impaired clearance of systemic S. aureus infection. S. aureus-infected COMMD10-deficient macrophages exhibited impaired activation of the transcription factor EB, resulting in reduced lysosomal biogenesis. Moreover, S. aureus-initiated phagolysosomal maturation and function were significantly attenuated in COMMD10-deficient macrophages. Finally, expression of COMMD/CCDC22/CCDC93 complex, linked to phagolysosomal maturation, was reduced by COMMD10 deficiency. Collectively, these results support an important role for COMMD10 in instructing macrophage phagolysosomal biogenesis and maturation during S. aureus infection.
Collapse
Affiliation(s)
- Shani Ben Shlomo
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, 6 Weizmann St, Tel-Aviv 64239, Israel
| | - Odelia Mouhadeb
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, 6 Weizmann St, Tel-Aviv 64239, Israel; Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Keren Cohen
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, 6 Weizmann St, Tel-Aviv 64239, Israel; Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Chen Varol
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, 6 Weizmann St, Tel-Aviv 64239, Israel; Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel.
| | - Nathan Gluck
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, 6 Weizmann St, Tel-Aviv 64239, Israel.
| |
Collapse
|
19
|
Pohl S, Angermann A, Jeschke A, Hendrickx G, Yorgan TA, Makrypidi-Fraune G, Steigert A, Kuehn SC, Rolvien T, Schweizer M, Koehne T, Neven M, Winter O, Velho RV, Albers J, Streichert T, Pestka JM, Baldauf C, Breyer S, Stuecker R, Muschol N, Cox TM, Saftig P, Paganini C, Rossi A, Amling M, Braulke T, Schinke T. The Lysosomal Protein Arylsulfatase B Is a Key Enzyme Involved in Skeletal Turnover. J Bone Miner Res 2018; 33:2186-2201. [PMID: 30075049 DOI: 10.1002/jbmr.3563] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/10/2018] [Accepted: 06/20/2018] [Indexed: 12/24/2022]
Abstract
Skeletal pathologies are frequently observed in lysosomal storage disorders, yet the relevance of specific lysosomal enzymes in bone remodeling cell types is poorly defined. Two lysosomal enzymes, ie, cathepsin K (Ctsk) and Acp5 (also known as tartrate-resistant acid phosphatase), have long been known as molecular marker proteins of differentiated osteoclasts. However, whereas the cysteine protease Ctsk is directly involved in the degradation of bone matrix proteins, the molecular function of Acp5 in osteoclasts is still unknown. Here we show that Acp5, in concert with Acp2 (lysosomal acid phosphatase), is required for dephosphorylation of the lysosomal mannose 6-phosphate targeting signal to promote the activity of specific lysosomal enzymes. Using an unbiased approach we identified the glycosaminoglycan-degrading enzyme arylsulfatase B (Arsb), mutated in mucopolysaccharidosis type VI (MPS-VI), as an osteoclast marker, whose activity depends on dephosphorylation by Acp2 and Acp5. Similar to Acp2/Acp5-/- mice, Arsb-deficient mice display lysosomal storage accumulation in osteoclasts, impaired osteoclast activity, and high trabecular bone mass. Of note, the most prominent lysosomal storage accumulation was observed in osteocytes from Arsb-deficient mice, yet this pathology did not impair production of sclerostin (Sost) and Fgf23. Because the influence of enzyme replacement therapy (ERT) on bone remodeling in MPS-VI is still unknown, we additionally treated Arsb-deficient mice by weekly injection of recombinant human ARSB from 12 to 24 weeks of age. We found that the high bone mass phenotype of Arsb-deficient mice and the underlying bone cell deficits were fully corrected by ERT in the trabecular compartment. Taken together, our results do not only show that the function of Acp5 in osteoclasts is linked to dephosphorylation and activation of lysosomal enzymes, they also provide an important proof-of-principle for the feasibility of ERT to correct bone cell pathologies in lysosomal storage disorders. © 2018 The Authors. Journal of Bone and Mineral Research Published by Wiley Periodicals Inc.
Collapse
Affiliation(s)
- Sandra Pohl
- Department of Biochemistry, Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexandra Angermann
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gretl Hendrickx
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timur A Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Georgia Makrypidi-Fraune
- Department of Biochemistry, Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anita Steigert
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sonja C Kuehn
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Rolvien
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michaela Schweizer
- Department of Electron Microscopy, Center of Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Till Koehne
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Orthodontics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mona Neven
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Olga Winter
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Renata Voltolini Velho
- Department of Biochemistry, Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joachim Albers
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thomas Streichert
- Department of Clinical Chemistry, University Hospital Cologne, Cologne, Germany
| | - Jan M Pestka
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christina Baldauf
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sandra Breyer
- Department of Orthopedics, Children's Hospital Hamburg-Altona, Hamburg, Germany
| | - Ralf Stuecker
- Department of Orthopedics, Children's Hospital Hamburg-Altona, Hamburg, Germany
| | - Nicole Muschol
- Department of Electron Microscopy, Center of Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timothy M Cox
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Paul Saftig
- Institute of Biochemistry, Christian-Albrechts-University, Kiel, Germany
| | - Chiara Paganini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Antonio Rossi
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thomas Braulke
- Department of Biochemistry, Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| |
Collapse
|
20
|
The classification, genetic diagnosis and modelling of monogenic autoinflammatory disorders. Clin Sci (Lond) 2018; 132:1901-1924. [PMID: 30185613 PMCID: PMC6123071 DOI: 10.1042/cs20171498] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/30/2018] [Accepted: 08/07/2018] [Indexed: 12/13/2022]
Abstract
Monogenic autoinflammatory disorders are an increasingly heterogeneous group of conditions characterised by innate immune dysregulation. Improved genetic sequencing in recent years has led not only to the discovery of a plethora of conditions considered to be 'autoinflammatory', but also the broadening of the clinical and immunological phenotypic spectra seen in these disorders. This review outlines the classification strategies that have been employed for monogenic autoinflammatory disorders to date, including the primary innate immune pathway or the dominant cytokine implicated in disease pathogenesis, and highlights some of the advantages of these models. Furthermore, the use of the term 'autoinflammatory' is discussed in relation to disorders that cross the innate and adaptive immune divide. The utilisation of next-generation sequencing (NGS) in this population is examined, as are potential in vivo and in vitro methods of modelling to determine pathogenicity of novel genetic findings. Finally, areas where our understanding can be improved are highlighted, such as phenotypic variability and genotype-phenotype correlations, with the aim of identifying areas of future research.
Collapse
|
21
|
Cappelli S, Romano M, Buratti E. Systematic Analysis of Gene Expression Profiles Controlled by hnRNP Q and hnRNP R, Two Closely Related Human RNA Binding Proteins Implicated in mRNA Processing Mechanisms. Front Mol Biosci 2018; 5:79. [PMID: 30214903 PMCID: PMC6125337 DOI: 10.3389/fmolb.2018.00079] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/08/2018] [Indexed: 12/13/2022] Open
Abstract
Heteregeneous ribonucleoproteins (hnRNPs) are a family of RNA-binding proteins that take part in all processes that involve mRNA maturation. As a consequence, alterations of their homeostasis may lead to many complex pathological disorders, such as neurodegeneration and cancer. For many of these proteins, however, their exact function and cellular targets are still not very well known. Here, we focused the attention on two hnRNP family members, hnRNP Q and hnRNP R, that we previously found affecting TDP-43 activity both in Drosophila melanogaster and human neuronal cell line. Classification of these two human proteins as paralogs is suported by the high level of sequence homology and by the observation that in fly they correspond to the same protein, namely Syp. We profiled differentially expressed genes from RNA-Seq and generated functional enrichment results after silencing of hnRNP Q and hnRNP R in neuroblastoma SH-SY5Y cell line. Interestingly, despite their high sequence similarity, these two proteins were found to affect different cellular pathways, especially with regards to neurodegeneration, such as PENK, NGR3, RAB26, JAG1, as well as inflammatory response, such as TNF, ICAM1, ICAM5, and TNFRSF9. In conclusion, human hnRNP Q and hnRNP R may be considered potentially important regulators of neuronal homeostasis and their disruption could impair distinct pathways in the central nervous system axis, thus confirming the importance of their conservation during evolution.
Collapse
Affiliation(s)
- Sara Cappelli
- Molecular Pathology, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Maurizio Romano
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Emanuele Buratti
- Molecular Pathology, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| |
Collapse
|
22
|
Harazim M, Horáček I, Jakešová L, Luermann K, Moravec JC, Morgan S, Pikula J, Sosík P, Vavrušová Z, Zahradníková A, Zukal J, Martínková N. Natural selection in bats with historical exposure to white-nose syndrome. BMC ZOOL 2018. [DOI: 10.1186/s40850-018-0035-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
|
23
|
Huerta AE, Prieto-Hontoria PL, Fernández-Galilea M, Escoté X, Martínez JA, Moreno-Aliaga MJ. Effects of dietary supplementation with EPA and/or α-lipoic acid on adipose tissue transcriptomic profile of healthy overweight/obese women following a hypocaloric diet. Biofactors 2017; 43:117-131. [PMID: 27507611 DOI: 10.1002/biof.1317] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/20/2016] [Accepted: 06/27/2016] [Indexed: 12/31/2022]
Abstract
In obesity, the increment of adiposity levels disrupts the whole body homeostasis, promoting an over production of oxidants and inflammatory mediators. The current study aimed to characterize the transcriptomic changes promoted by supplementation with eicosapentaenoic acid (EPA, 1.3 g/day), α-lipoic acid (0.3 g/day), or both (EPA + α-lipoic acid, 1.3 g/day + 0.3 g/day) in subcutaneous abdominal adipose tissue from overweight/obese healthy women, who followed a hypocaloric diet (30% of total energy expenditure) during ten weeks, by using a microarray approach. At the end of the intervention, a total of 33,297 genes were analyzed using Affymetrix GeneChip arrays. EPA promoted changes in extracellular matrix remodeling gene expression, besides a rise of genes associated with either chemotaxis or wound repair. α-Lipoic acid decreased expression of genes related with cell adhesion and inflammation. Furthermore, α-lipoic acid, especially in combination with EPA, upregulated the expression of genes associated with lipid catabolism while downregulated genes involved in lipids storage. Together, all these data suggest that some of the metabolic effects of EPA and α-lipoic acid could be related to their regulatory actions on adipose tissue metabolism. © 2016 BioFactors, 43(1):117-131, 2017.
Collapse
Affiliation(s)
- Ana E Huerta
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
- Centre for Nutrition Research, University of Navarra, Pamplona, Spain
| | - Pedro L Prieto-Hontoria
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
| | - Marta Fernández-Galilea
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
| | - Xavier Escoté
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
- Centre for Nutrition Research, University of Navarra, Pamplona, Spain
| | - J Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
- Centre for Nutrition Research, University of Navarra, Pamplona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III (ISCIII), Madrid, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - María J Moreno-Aliaga
- Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
- Centre for Nutrition Research, University of Navarra, Pamplona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III (ISCIII), Madrid, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| |
Collapse
|
24
|
An J, Briggs TA, Dumax-Vorzet A, Alarcón-Riquelme ME, Belot A, Beresford M, Bruce IN, Carvalho C, Chaperot L, Frostegård J, Plumas J, Rice GI, Vyse TJ, Wiedeman A, Crow YJ, Elkon KB. Tartrate-Resistant Acid Phosphatase Deficiency in the Predisposition to Systemic Lupus Erythematosus. Arthritis Rheumatol 2016; 69:131-142. [PMID: 27390188 DOI: 10.1002/art.39810] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 06/30/2016] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Mutations in the ACP5 gene, which encodes tartrate-resistant acid phosphatase (TRAP), cause the immuno-osseous disorder spondyloenchondrodysplasia, which includes as disease features systemic lupus erythematosus (SLE) and a type I interferon (IFN) signature. Our aims were to identify TRAP substrates, determine the consequences of TRAP deficiency in immune cells, and assess whether ACP5 mutations are enriched in sporadic cases of SLE. METHODS Interaction between TRAP and its binding partners was tested by a yeast 2-hybrid screening, confocal microscopy, and immunoprecipitation/Western blotting. TRAP knockdown was performed using small interfering RNA. Phosphorylation of osteopontin (OPN) was analyzed by mass spectrometry. Nucleotide sequence analysis of ACP5 was performed by Sanger sequencing or next-generation sequencing. RESULTS TRAP and OPN colocalized and interacted in human macrophages and plasmacytoid dendritic cells (PDCs). TRAP dephosphorylated 3 serine residues on specific OPN peptides. TRAP knockdown resulted in increased OPN phosphorylation and increased nuclear translocation of IRF7 and P65, with resultant heightened expression of IFN-stimulated genes and IL6 and TNF following Toll-like receptor 9 stimulation. An excess of heterozygous ACP5 missense variants was observed in SLE compared to controls (P = 0.04), and transfection experiments revealed a significant reduction in TRAP activity in a number of variants. CONCLUSION Our findings indicate that TRAP and OPN colocalize and that OPN is a substrate for TRAP in human immune cells. TRAP deficiency in PDCs leads to increased IFNα production, providing at least a partial explanation for how ACP5 mutations cause lupus in the context of spondyloenchondrodysplasia. Detection of ACP5 missense variants in a lupus cohort suggests that impaired TRAP functioning may increase susceptibility to sporadic lupus.
Collapse
Affiliation(s)
- Jie An
- University of Washington, Seattle
| | - Tracy A Briggs
- University of Manchester and St. Mary's Hospital, Central Manchester Foundation Trust, Manchester, UK
| | | | - Marta E Alarcón-Riquelme
- Universidad de Granada-Junta de Andalucía, Granada, Spain, and Oklahoma Medical Research Foundation, Oklahoma City
| | - Alexandre Belot
- Pediatric Rheumatology Unit, Femme Mère Enfant Hospital, Hospices Civils de Lyon, INSERM U1111, University of Lyon, Lyon, France
| | - Michael Beresford
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Ian N Bruce
- University of Manchester and Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Claudia Carvalho
- Universidade do Porto, Abel Salazar Institute of Biomedical Sciences, Porto, Portugal
| | - Laurence Chaperot
- INSERM U823/UJF/EFS, UGA, INSERM U1209, CNRS 5309, Immunobiology and Immunotherapy of Cancers and Chronic Diseases, Grenoble, France
| | | | - Joel Plumas
- INSERM U823/UJF/EFS, UGA, INSERM U1209, CNRS 5309, Immunobiology and Immunotherapy of Cancers and Chronic Diseases, Grenoble, France
| | | | | | | | - Yanick J Crow
- University of Manchester, Manchester, UK, and Institut Imagine, Laboratory of Neurogenetics and Neuroinflammation, Paris, France
| | | |
Collapse
|
25
|
Yang X, Chordia MD, Du X, Graves JL, Zhang Y, Park YS, Guo Y, Pan D, Cui Q. Targeting formyl peptide receptor 1 of activated macrophages to monitor inflammation of experimental osteoarthritis in rat. J Orthop Res 2016; 34:1529-38. [PMID: 26717557 DOI: 10.1002/jor.23148] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 12/21/2015] [Indexed: 02/04/2023]
Abstract
Macrophages play a crucial role in the pathogenesis of osteoarthritis (OA). In this study, the feasibility of a formyl peptide receptor 1 (Fpr1)-targeting peptide probe cFLFLF-PEG-(64) Cu via positron emission tomography (PET) imaging was investigated for detection of macrophage activity during development of OA. Monoiodoacetate (MIA) was intraarticularly injected into the knee joint of Sprague-Dawley rats to induce OA. Five days later, cFLFLF-PEG-(64) Cu (∼7,400 kBq/rat) was injected into the tail vein and microPET/CT imaging was performed to assess the OA inflammation by detecting infiltration of macrophages by Fpr1 expression. In addition, a murine macrophage cell line RAW264.7 and two fluorescent probes cFLFLF-PEG-cyanine 7 (cFLFLF-PEG-Cy7) and cFLFLF-PEG-cyanine 5 (cFLFLF-PEG-Cy5) were used to define the binding specificity of the peptide to macrophages. It was found with the MIA model that the maximal standard uptake values (SUVmax ) for right (MIA treated) and left (control) knees were 17.96 ± 5.45 and 3.00 ± 1.40, respectively. Histological evaluation of cryomicrotome sections showed that Fpr1 expression, cFLFLF-PEG-Cy5 binding, and tartrate-resistant acid phosphatase activity were elevated in the injured synovial membranes. The in vitro experiments demonstrated that both fluorescent peptide probes could bind specifically to RAW264.7 cells, which was blocked by cFLFLF but not by the scramble peptide. The findings highlighted the use of cFLFLF-PEG-(64) Cu/PET as an effective method potentially applied for detection and treatment evaluation of OA. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1529-1538, 2016.
Collapse
Affiliation(s)
- Xinlin Yang
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Mahendra D Chordia
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, 22903
| | - Xuejun Du
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903.,Department of Orthopaedic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453100, PR China
| | - John L Graves
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Yi Zhang
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, 22903
| | - Yong-Sang Park
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Yongfei Guo
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903
| | - Dongfeng Pan
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, 22903
| | - Quanjun Cui
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, 22903
| |
Collapse
|
26
|
Wu X, Feng X, He Y, Gao Y, Yang S, Shao Z, Yang C, Wang H, Ye Z. IL-4 administration exerts preventive effects via suppression of underlying inflammation and TNF-α-induced apoptosis in steroid-induced osteonecrosis. Osteoporos Int 2016; 27:1827-37. [PMID: 26753542 DOI: 10.1007/s00198-015-3474-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/21/2015] [Indexed: 12/15/2022]
Abstract
UNLABELLED Macrophages play an important role during the development of steroid-induced osteonecrosis. Interleukin (IL)-4 administration helped reduce the infiltration of M1 phenotypic macrophages and maintain the activation of M2 phenotypic macrophages, resulting in restriction of inflammation and decrease in osteocyte apoptosis. The results indicated the therapeutic potential of IL-4 in prevention of steroid-induced osteonecrosis. INTRODUCTION Steroid-induced osteonecrosis (ON) is a debilitating disease characterized by the activation and infiltration of macrophages into the necrotic site. This study aimed to investigate the effects of IL-4 administration on macrophage polarization and the involved signaling pathways. METHODS Fifty-six BALB/c mice were randomly divided into two groups, group M (model group) and group MI (treatment group), each containing 28 mice. ON model was induced by the injection of methylprednisolone (MPS). The mice in group MI received intra-abdominal injections of 2 μg/100 g/day of rIL-4 for five consecutive days, following the administration of MPS. Osteonecrosis was verified by histopathological staining. The expression of tumor necrosis factor-alpha (TNF-α) was analyzed by ELISA and immunohistochemistry. The infiltration of M1/M2 macrophages was examined by the expression of specific makers of F4/80, CD11c, and CD206 protein. Cell apoptosis was detected by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay, and the apoptotic signal molecules such as STAT1 and caspase-3 were examined. RESULTS Histopathological observations indicated that IL-4 administration reduced the incidence of ON and the accumulation of osteoclasts. IL-4 administration inhibited the expression of TNF-α and reduced the infiltration of M1 phenotypic macrophages and maintained relatively high level of M2 phenotypic macrophages. Additionally, TUNEL assay suggested that IL-4 intervention could reduce the number of apoptotic cells in the necrotic zone. The anti-apoptotic mechanisms were related to STAT1 phosphorylation and the activation of caspase-3. CONCLUSIONS Il-4 administration could alleviate steroid associated ON in mice by inhibiting the inflammatory response, the infiltration of M1 phenotypic macrophages, and suppressing TNF-a-induced osteocytic apoptosis by inhibiting the STAT1-caspase-3 signal pathway.
Collapse
Affiliation(s)
- X Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - X Feng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Y He
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Y Gao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - S Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Z Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - C Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - H Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Z Ye
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| |
Collapse
|
27
|
Briggs TA, Rice GI, Adib N, Ades L, Barete S, Baskar K, Baudouin V, Cebeci AN, Clapuyt P, Coman D, De Somer L, Finezilber Y, Frydman M, Guven A, Heritier S, Karall D, Kulkarni ML, Lebon P, Levitt D, Le Merrer M, Linglart A, Livingston JH, Navarro V, Okenfuss E, Puel A, Revencu N, Scholl-Bürgi S, Vivarelli M, Wouters C, Bader-Meunier B, Crow YJ. Spondyloenchondrodysplasia Due to Mutations in ACP5: A Comprehensive Survey. J Clin Immunol 2016; 36:220-34. [PMID: 26951490 PMCID: PMC4792361 DOI: 10.1007/s10875-016-0252-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 02/22/2016] [Indexed: 02/06/2023]
Abstract
Purpose Spondyloenchondrodysplasia is a rare immuno-osseous dysplasia caused by biallelic mutations in ACP5. We aimed to provide a survey of the skeletal, neurological and immune manifestations of this disease in a cohort of molecularly confirmed cases. Methods We compiled clinical, genetic and serological data from a total of 26 patients from 18 pedigrees, all with biallelic ACP5 mutations. Results We observed a variability in skeletal, neurological and immune phenotypes, which was sometimes marked even between affected siblings. In total, 22 of 26 patients manifested autoimmune disease, most frequently autoimmune thrombocytopenia and systemic lupus erythematosus. Four patients were considered to demonstrate no clinical autoimmune disease, although two were positive for autoantibodies. In the majority of patients tested we detected upregulated expression of interferon-stimulated genes (ISGs), in keeping with the autoimmune phenotype and the likely immune-regulatory function of the deficient protein tartrate resistant acid phosphatase (TRAP). Two mutation positive patients did not demonstrate an upregulation of ISGs, including one patient with significant autoimmune disease controlled by immunosuppressive therapy. Conclusions Our data expand the known phenotype of SPENCD. We propose that the OMIM differentiation between spondyloenchondrodysplasia and spondyloenchondrodysplasia with immune dysregulation is no longer appropriate, since the molecular evidence that we provide suggests that these phenotypes represent a continuum of the same disorder. In addition, the absence of an interferon signature following immunomodulatory treatments in a patient with significant autoimmune disease may indicate a therapeutic response important for the immune manifestations of spondyloenchondrodysplasia.
Collapse
Affiliation(s)
- Tracy A Briggs
- Manchester Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK. .,St Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.
| | - Gillian I Rice
- Manchester Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
| | - Navid Adib
- Department of Rheumatology, The Lady Cilento Children's Hospital, Brisbane, Australia
| | - Lesley Ades
- Department of Clinical Genetics, The Children's Hospital at Westmead, Sydney, Australia.,Discipline of Paedatrics and Child Health, The University of Sydney, Sydney, Australia
| | - Stephane Barete
- Dermatology Department, Pitie-Salpetriere Hospital, Paris, France
| | - Kannan Baskar
- Creighton University, 2500 California Plaza, NE 68178, Omaha, USA
| | - Veronique Baudouin
- Pediatric Nephrology Department, Robert Debré University Hospital - APHP, 48 boulevard Sérurier, 75019, Paris, France
| | - Ayse N Cebeci
- Goztepe Educational and Research Hospital Pediatric Endocrinology Clinic, Istanbul, Türkiye
| | - Philippe Clapuyt
- Pediatric Imaging Unit, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - David Coman
- Neuroscience Department, The Lady Cilento Children's Hospital, Brisbane, Australia.,School of Medicine, Griffith University, Gold Coast, Australia
| | - Lien De Somer
- Pediatric Rheumatology, Department of Pediatrics, University Hospitals Leuven, B-3000, Leuven, Belgium
| | - Yael Finezilber
- Danek Gertner Institute of Human Genetics, Chaim Sheba Medical Center, Tel Aviv, Israel
| | - Moshe Frydman
- Danek Gertner Institute of Human Genetics, Chaim Sheba Medical Center, Tel Aviv, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ayla Guven
- Goztepe Educational and Research Hospital Pediatric Endocrinology Clinic, Istanbul, Türkiye.,Amasya University Medical Faculty, Department of Pediatric Endocrinology, Istanbul, Türkiye
| | - Sébastien Heritier
- Department of Pediatric Hematology and Oncology, Trousseau Hospital, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Daniela Karall
- Clinic for Pediatrics I, Inherited Metabolic Disorders, Medical University of Innsbruck, Anichstr. 35, A-6020, Innsbruck, Austria
| | | | - Pierre Lebon
- Service de Virologie, AP-HP Hôpital Cochin, Paris, France
| | - David Levitt
- Department of Paediatrics, The Lady Cilento Children's Hospital, Brisbane, Australia
| | - Martine Le Merrer
- Centre de Référence des Maladies Osseuses Constitutionnelles et Institut Imagine, Hopital Necker 149 rue de Sevres, 75015, Paris, France
| | - Agnes Linglart
- APHP, Bicêtre Paris Sud, Department of Pediatric Endocrinology and Diabetology for Children, 94270, Le Kremlin Bicêtre, France.,Reference Center for Rare Disorders of the Mineral Metabolism and Plateforme d'expertise Paris Sud Maladies Rares, APHP, 94270, Le Kremlin Bicêtre, France
| | - John H Livingston
- Department of Paediatric Neurology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | | | - Ericka Okenfuss
- Kaiser Permanente - Genetics, 1650 Response Rd, Sacramento, CA, 95815, USA
| | - Anne Puel
- Génétique Humaine des Maladies Infectieuses, INSERM UMR 1163, Université Paris Descartes Sorbonne Paris Cité, Institut Imagine, Pièce 421-B1, 24 boulevard du Montparnasse, 75015, Paris, France
| | - Nicole Revencu
- Centre for Human Genetics, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Sabine Scholl-Bürgi
- Clinic for Pediatrics I, Inherited Metabolic Disorders, Medical University of Innsbruck, Anichstr. 35, A-6020, Innsbruck, Austria
| | - Marina Vivarelli
- Division of Nephrology, IRCCS Bambino Gesu' Pediatric Hospital, Rome, Italy
| | - Carine Wouters
- Department of Microbiology and Immunology, Pediatric Immunology, KU Leuven, University of Leuven, Leuven, Belgium
| | - Brigitte Bader-Meunier
- Pediatric Immunology and Rheumatology Unit, Hôpital Necker, APHP, Paris, France.,Institut Imagine, Paris, France
| | - Yanick J Crow
- Manchester Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Laboratory of Neurogenetics and Neuroinflammation, Institut Imagine, 24 boulevard du Montparnasse, 75015, Paris, France
| |
Collapse
|
28
|
de Bruin C, Orbak Z, Andrew M, Hwa V, Dauber A. Severe Short Stature in Two Siblings as the Presenting Sign of ACP5 Deficiency. Horm Res Paediatr 2016; 85:358-62. [PMID: 26789720 PMCID: PMC4891295 DOI: 10.1159/000443684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 12/28/2015] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND ACP5 deficiency is known to cause spondyloenchondrodysplasia (SPENCD), which is characterized by various autoimmune and neurological symptoms in addition to short stature. METHODS Two siblings from a consanguineous Turkish family, a girl aged 13 years (P1) and a boy aged 8 years (P2), presented to their endocrinologist with progressive growth failure and severe short stature (-5 SDS). They had no comorbid conditions and, on physical examination, there were no signs of an overt skeletal dysplasia with normal appearance of extremities. Other than a low baseline IGF-1, extensive laboratory workup, including growth hormone stimulation and IGF-1 generation tests, was normal. Exome sequencing was performed. RESULTS Exome sequencing identified the presence of a homozygous frameshift mutation (p.Ser258Trpfs*39) in ACP5 in both siblings, which was confirmed by Sanger sequencing. This specific mutation has previously been described in patients with SPENCD. Additional workup in the two siblings showed distinct features of skeletal dysplasia on X-rays consistent with SPENCD, but none of the common autoimmune or neurological abnormalities associated with this condition. CONCLUSION Severe short stature can be the only presenting sign of ACP5 deficiency and the latter could therefore be considered as a rare cause in the differential diagnosis of severe, proportionate growth failure.
Collapse
Affiliation(s)
- Christiaan de Bruin
- Cincinnati Center for Growth Disorders, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Zerrin Orbak
- Department of Pediatric Endocrinology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Melissa Andrew
- Cincinnati Center for Growth Disorders, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Vivian Hwa
- Cincinnati Center for Growth Disorders, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Andrew Dauber
- Cincinnati Center for Growth Disorders, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| |
Collapse
|
29
|
Zhou ZY, Packialakshmi B, Makkar SK, Dridi S, Rath NC. Effect of butyrate on immune response of a chicken macrophage cell line. Vet Immunol Immunopathol 2014; 162:24-32. [PMID: 25278494 DOI: 10.1016/j.vetimm.2014.09.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 08/22/2014] [Accepted: 09/12/2014] [Indexed: 12/14/2022]
Abstract
Butyric acid is a major short chain fatty acid (SCFA), produced in the gastrointestinal tract by anaerobic bacterial fermentation, that has beneficial health effects in many species including poultry. To understand the immunomodulating effects of butyrate on avian macrophage, we treated a naturally transformed line of chicken macrophage cells named HTC with Na-butyrate in the absence or presence of Salmonella typhimurium lipopolysaccharide (LPS) or phorbol-12-myristate-13-acetate (PMA), a metabolic activator, evaluating its various functional parameters. The results demonstrate that, butyrate by itself had no significant effect on variables such as nitric oxide (NO) production and the expression of genes associated with various inflammatory cytokines but it inhibited NO production, and reduced the expression of cytokines such as IL-1β, IL-6, IFN-γ, and IL-10 in LPS-stimulated cells. Butyrate decreased the expression of TGF-β3 in the presence or absence of LPS, while it had no effect on IL-4, Tβ4, and MMP2 gene expression. In addition, butyrate augmented PMA induced oxidative burst indicated by DCF-DA oxidation and restored LPS induced attenuation of tartrate resistant acid phosphatase (TRAP) activity. Although butyrate had no significant effect on phagocytosis or matrix metalloproteinase (MMP) activities of resting macrophages, it significantly suppressed the effects induced by their respective stimulants such as LPS induced phagocytosis and PMA induced MMP expression. These results suggest that butyrate has immunomodulatory property in the presence of agents that incite the cells thus, has potential to control inflammation and restore immune homeostasis.
Collapse
Affiliation(s)
- Z Y Zhou
- Department of Veterinary Medicine, Rongchang Campus of Southwest University, 160 Xueyuan Road, Chongqing 402460, Rongchang County, China; USDA/ARS, Poultry Production and Product Safety Research Unit, Poultry Science Center, University of Arkansas, Fayetteville, AR 72701, USA
| | - B Packialakshmi
- USDA/ARS, Poultry Production and Product Safety Research Unit, Poultry Science Center, University of Arkansas, Fayetteville, AR 72701, USA; Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA; Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA
| | - S K Makkar
- USDA/ARS, Poultry Production and Product Safety Research Unit, Poultry Science Center, University of Arkansas, Fayetteville, AR 72701, USA; Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - S Dridi
- Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - N C Rath
- USDA/ARS, Poultry Production and Product Safety Research Unit, Poultry Science Center, University of Arkansas, Fayetteville, AR 72701, USA.
| |
Collapse
|
30
|
Caveolae-mediated endocytosis of the glucosaminoglycan-interacting adipokine tartrate resistant acid phosphatase 5a in adipocyte progenitor lineage cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:495-507. [PMID: 24316135 DOI: 10.1016/j.bbamcr.2013.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 11/22/2013] [Accepted: 11/25/2013] [Indexed: 11/23/2022]
Abstract
Adipogenesis depends on growth factors controlling proliferation/differentiation of mesenchymal stem cells (MSCs). Membrane binding and endocytosis of growth factors are often coupled to receptor activation and downstream signaling leading to specific cellular responses. The novel adipokine tartrate-resistant acid phosphatase (TRAP) 5a exhibits a growth factor-like effect on MSCs and pre-adipocytes and induces hyperplastic obesity in vivo. However its molecular interaction with pre-adipocytes remains unknown. Therefore, this study aimed to investigate membrane interaction of TRAP and its endocytosis routes in pre-adipocytes. Confocal and/or electron microscopy were used to detect TRAP in untreated or TRAP 5a/b treated pre-adipocytes under conditions that allow or inhibit endocytosis in combination with co-staining of endocytotic vesicles. TRAP interaction with heparin/heparan sulfate was verified by gel filtration. It could be shown that TRAP 5a, but not 5b, binds to the membrane of pre-adipocytes where it co-localizes with heparin-sulfate proteoglycan glypican-4. Also in vitro, TRAP 5a exhibited affinity for both heparin and heparan sulfate with heparin inhibiting its enzyme activity. Upon caveolae-mediated endocytosis of saturating levels of TRAP 5a, TRAP 5a co-localized intracellularly with glypican-4 and late endosomal marker Rab-7 positive vesicles. The protein was also located in multivesicular bodies (MVBs) but did not co-localize with lysosomal marker LAMP-1. TRAP 5a endocytosis was also detectable in pre-osteoblasts, but not fibroblasts, embryonic MSCs or mature adipocytes. These results indicate that TRAP 5a exhibits binding to cell surface, endocytosis and affinity to glucosaminoglycans (GAGs) in pre-adipocyte and pre-osteoblast lineage cells in a manner similar to other heparin-binding growth factors.
Collapse
|
31
|
McGeary RP, Schenk G, Guddat LW. The applications of binuclear metallohydrolases in medicine: Recent advances in the design and development of novel drug leads for purple acid phosphatases, metallo-β-lactamases and arginases. Eur J Med Chem 2014; 76:132-44. [DOI: 10.1016/j.ejmech.2014.02.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 01/28/2014] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
|
32
|
Zhang D, Song H, Cheng H, Hao D, Wang H, Kan G, Jin H, Yu D. The acid phosphatase-encoding gene GmACP1 contributes to soybean tolerance to low-phosphorus stress. PLoS Genet 2014; 10:e1004061. [PMID: 24391523 PMCID: PMC3879153 DOI: 10.1371/journal.pgen.1004061] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 11/11/2013] [Indexed: 01/12/2023] Open
Abstract
Phosphorus (P) is essential for all living cells and organisms, and low-P stress is a major factor constraining plant growth and yield worldwide. In plants, P efficiency is a complex quantitative trait involving multiple genes, and the mechanisms underlying P efficiency are largely unknown. Combining linkage analysis, genome-wide and candidate-gene association analyses, and plant transformation, we identified a soybean gene related to P efficiency, determined its favorable haplotypes and developed valuable functional markers. First, six major genomic regions associated with P efficiency were detected by performing genome-wide associations (GWAs) in various environments. A highly significant region located on chromosome 8, qPE8, was identified by both GWAs and linkage mapping and explained 41% of the phenotypic variation. Then, a regional mapping study was performed with 40 surrounding markers in 192 diverse soybean accessions. A strongly associated haplotype (P = 10(-7)) consisting of the markers Sat_233 and BARC-039899-07603 was identified, and qPE8 was located in a region of approximately 250 kb, which contained a candidate gene GmACP1 that encoded an acid phosphatase. GmACP1 overexpression in soybean hairy roots increased P efficiency by 11-20% relative to the control. A candidate-gene association analysis indicated that six natural GmACP1 polymorphisms explained 33% of the phenotypic variation. The favorable alleles and haplotypes of GmACP1 associated with increased transcript expression correlated with higher enzyme activity. The discovery of the optimal haplotype of GmACP1 will now enable the accurate selection of soybeans with higher P efficiencies and improve our understanding of the molecular mechanisms underlying P efficiency in plants.
Collapse
Affiliation(s)
- Dan Zhang
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Department of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Haina Song
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Hao Cheng
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Derong Hao
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Hui Wang
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Guizhen Kan
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Hangxia Jin
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Deyue Yu
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- National Center of Plant Gene Research (Shanghai), Shanghai, China
| |
Collapse
|
33
|
Wu P, Jiang J, Liu Y, Hu K, Jiang WD, Li SH, Feng L, Zhou XQ. Dietary choline modulates immune responses, and gene expressions of TOR and eIF4E-binding protein2 in immune organs of juvenile Jian carp (Cyprinus carpio var. Jian). FISH & SHELLFISH IMMUNOLOGY 2013; 35:697-706. [PMID: 23774323 DOI: 10.1016/j.fsi.2013.05.030] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Revised: 03/20/2013] [Accepted: 05/28/2013] [Indexed: 06/02/2023]
Abstract
The present work evaluates the effects of various levels of dietary choline on immune parameters, immune-related gene expression and protection against Aeromonas hydrophila (AH) in juvenile Jian carp (Cyprinus carpio var. Jian). Fish were fed with six different experimental diets containing graded levels of choline at 165 (choline-deficient control), 310, 607, 896, 1167 and 1820 mg kg(-1) diet for 65 days. At the end of the feeding trail, Fish were challenged with AH and mortalities were recorded over 17 days. Dietary choline significantly enhanced spleen and head kidney weights, spleen index, red blood cell and white blood cell counts, and intestinal Lactobacillus counts of juvenile Jian carp; whereas, intestinal Escherichia coli and A. hydrophila counts decreased. Moreover, the post-challenge survival rate, leucocyte phagocytic capacity, serum lysozyme and acid phosphatase activities, hemagglutination titer, complement 3 and 4 contents, immunoglobulin M content, and anti-AH antibody titer were significantly enhanced by choline and the lowest in choline-deficient group, while serum total iron-binding capacity was the highest in choline-deficient group. The relative gene expressions of interleukin 10 in spleen and head kidney, target of rapamycin (TOR) in spleen and eIF4E-binding protein2 (4E-BP2) in head kidney significantly increased with increasing of dietary choline up to a certain point. However, the relative gene expressions of interleukin 1β, tumor necrosis factor α and transforming growth factor β2 in spleen and head kidney, TOR in head kidney and 4E-BP2 in spleen significantly decreased. In conclusion, dietary choline improved disease resistance, enhanced the immune function, and regulated immune-related gene expression of juvenile Jian carp.
Collapse
Affiliation(s)
- Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
McDade JK, Brennan-Pierce EP, Ariganello MB, Labow RS, Michael Lee J. Interactions of U937 macrophage-like cells with decellularized pericardial matrix materials: influence of crosslinking treatment. Acta Biomater 2013; 9:7191-9. [PMID: 23454057 DOI: 10.1016/j.actbio.2013.02.021] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 01/21/2013] [Accepted: 02/12/2013] [Indexed: 01/23/2023]
Abstract
While macrophages have been implicated in the failure of bioprosthetic heart valves, the macrophage response to crosslinked native pericardial collagen has not been previously investigated. Using decellularized bovine pericardium (DBP) as a model for native collagen, this study investigated the response of macrophage-like cells (U937s) to DBP, either: (i) untreated, or (ii) exogenously crosslinked with glutaraldehyde or 1-ethyl-3-(3-dimethyl-aminopropyl)-carbodiimide (EDC). We have previously validated the use of U937 cells as models for the response of human monocyte-derived macrophages to decellularized pericardial materials and, per our previous work, differentiated the U937 cells directly on the three material surfaces. After 72h in culture, the cells and medium were analyzed for DNA content, acid phosphatase activity, and cytokine and matrix metalloproteinase release. As well, cell/substrate samples were fixed for SEM. Fewer cells attached to or survived on the glutaraldehyde-treated substrate, and some showed an abnormal morphology compared to cells cultured on the other surfaces. Further, cells on glutaraldehyde-treated surfaces released more pro-inflammatory cytokines, more MMP-1 and less MMP-2 and MMP-9. The poor performance of the U937 macrophage-like cells on the glutaraldehyde-treated surfaces appears to be due to surface characteristics rather than to soluble aldehyde or other components leaching from the crosslinked material. These results provide evidence that crosslinking with glutaraldehyde is cytotoxic to macrophage-like cells, and that crosslinking with a zero-length crosslinker like EDC can be an acceptable alternative crosslinking treatment for biomaterials.
Collapse
|
35
|
Klimmeck D, Hansson J, Raffel S, Vakhrushev SY, Trumpp A, Krijgsveld J. Proteomic cornerstones of hematopoietic stem cell differentiation: distinct signatures of multipotent progenitors and myeloid committed cells. Mol Cell Proteomics 2012; 11:286-302. [PMID: 22454540 DOI: 10.1074/mcp.m111.016790] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Regenerative tissues such as the skin epidermis, the intestinal mucosa or the hematopoietic system are organized in a hierarchical manner with stem cells building the top of this hierarchy. Somatic stem cells harbor the highest self-renewal activity and generate a series of multipotent progenitors which differentiate into lineage committed progenitors and subsequently mature cells. In this report, we applied an in-depth quantitative proteomic approach to analyze and compare the full proteomes of ex vivo isolated and FACS-sorted populations highly enriched for either multipotent hematopoietic stem/progenitor cells (HSPCs, Lin(neg)Sca-1(+)c-Kit(+)) or myeloid committed precursors (Lin(neg)Sca-1(-)c-Kit(+)). By employing stable isotope dimethyl labeling and high-resolution mass spectrometry, more than 5000 proteins were quantified. From biological triplicate experiments subjected to rigorous statistical evaluation, 893 proteins were found differentially expressed between multipotent and myeloid committed cells. The differential protein content in these cell populations points to a distinct structural organization of the cytoskeleton including remodeling activity. In addition, we found a marked difference in the expression of metabolic enzymes, including a clear shift of specific protein isoforms of the glycolytic pathway. Proteins involved in translation showed a collective higher expression in myeloid progenitors, indicating an increased translational activity. Strikingly, the data uncover a unique signature related to immune defense mechanisms, centering on the RIG-I and type-1 interferon response systems, which are installed in multipotent progenitors but not evident in myeloid committed cells. This suggests that specific, and so far unrecognized, mechanisms protect these immature cells before they mature. In conclusion, this study indicates that the transition of hematopoietic stem/progenitors toward myeloid commitment is accompanied by a profound change in processing of cellular resources, adding novel insights into the molecular mechanisms at the interface between multipotency and lineage commitment.
Collapse
Affiliation(s)
- Daniel Klimmeck
- Division of Stem Cells and Cancer, Deutsches Krebsforschungszentrum (DKFZ), INF 280, DE-69120 Heidelberg, Germany
| | | | | | | | | | | |
Collapse
|
36
|
Abstract
With a constitutive recycling function and the capacity to digest exogenous material as well as endogenous organelles in the process of autophagy, lysosomes are at the heart of the living cell. Dynamic interactions with other cellular components ensure that the lysosomal compartment is a central point of convergence in countless diverse diseases. Inborn lysosomal (storage) diseases represent about 70 genetically distinct conditions, with a combined birth frequency of about 1 in 7500. Many are associated with macromolecular storage, causing physical disruption of the organelle and cognate structures; in neurons, ectopic dendritogenesis and axonal swelling due to distension with membraneous tubules and autophagic vacuoles are observed. Disordered autophagy is almost universal in lysosomal diseases but biochemical injury due to toxic metabolites such as lysosphingolipid molecules, abnormal calcium homeostasis and endoplasmic reticulum stress responses and immune-inflammatory processes occur. However, in no case have the mechanistic links between individual clinico-pathological manifestations and the underlying molecular defect been precisely defined. With access to the external fluid-phase and intracellular trafficking pathways, the lysosome and its diseases are a focus of pioneering investment in biotechnology; this has generated innovative orphan drugs and, in the case of Gaucher's disease, effective treatment for the haematological and visceral manifestations. Given that two-thirds of lysosomal diseases have potentially devastating consequences in the nervous system, future therapeutic research will require an integrative understanding of the unitary steps in their neuro pathogenesis. Informative genetic variants illustrated by patients with primary defects in this organelle offer unique insights into the central role of lysosomes in human health and disease. We provide a conspectus of inborn lysosomal diseases and their pathobiology; the cryptic evolution of events leading to irreversible changes may be dissociated from the cellular storage phenotype, as revealed by the outcome of therapeutic gene transfer undertaken at different stages of disease.
Collapse
Affiliation(s)
- Timothy M Cox
- Department of Medicine, University of Cambridge, Cambridge, UK.
| | | |
Collapse
|
37
|
Abstract
Monogenic autoimmune syndromes provide a rare yet powerful glimpse into the fundamental mechanisms of immunologic tolerance. Such syndromes reveal not only the contribution of an individual breakpoint in tolerance but also patterns in the pathogenesis of autoimmunity. Disturbances in innate immunity, a system built for ubiquitous sensing of danger signals, tend to generate systemic autoimmunity. For example, defects in the clearance of self-antigens and chronic stimulation of type 1 interferons lead to the systemic autoimmunity seen in C1q deficiency, SPENCDI, and AGS. In contrast, disturbances of adaptive immunity, which is built for antigen specificity, tend to produce organ-specific autoimmunity. Thus, the loss of lymphocyte homeostasis, whether through defects in apoptosis, suppression, or negative selection, leads to organ-specific autoimmunity in ALPS, IPEX, and APS1. We discuss the unique mechanisms of disease in these prominent syndromes as well as how they contribute to the spectrum of organ-specific or systemic autoimmunity. The continued study of rare variants in autoimmune disease will inform future investigations and treatments directed at rare and common autoimmune diseases alike.
Collapse
Affiliation(s)
- Mickie H. Cheng
- Diabetes Center; Department of Medicine, Division of Endocrinology and Metabolism, University of California at San Francisco, San Francisco, California 94143;
| | - Mark S. Anderson
- Diabetes Center; Department of Medicine, Division of Endocrinology and Metabolism, University of California at San Francisco, San Francisco, California 94143;
| |
Collapse
|
38
|
Nakayama T, Mizoguchi T, Uehara S, Yamashita T, Kawahara I, Kobayashi Y, Moriyama Y, Kurihara S, Sahara N, Ozawa H, Udagawa N, Takahashi N. Polarized osteoclasts put marks of tartrate-resistant acid phosphatase on dentin slices--a simple method for identifying polarized osteoclasts. Bone 2011; 49:1331-9. [PMID: 21983021 DOI: 10.1016/j.bone.2011.09.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 09/14/2011] [Accepted: 09/16/2011] [Indexed: 10/17/2022]
Abstract
Osteoclasts form ruffled borders and sealing zones toward bone surfaces to resorb bone. Sealing zones are defined as ringed structures of F-actin dots (actin rings). Polarized osteoclasts secrete protons to bone surfaces via vacuolar proton ATPase through ruffled borders. Catabolic enzymes such as tartrate-resistant acid phosphatase (TRAP) and cathepsin K are also secreted to bone surfaces. Here we show a simple method of identifying functional vestiges of polarized osteoclasts. Osteoclasts obtained from cocultures of mouse osteoblasts and bone marrow cells were cultured for 48 h on dentin slices. Cultures were then fixed and stained for TRAP to identify osteoclasts on the slices. Cells were removed from the slices with cotton swabs, and the slices subjected to TRAP and Mayer's hematoxylin staining. Small TRAP-positive spots (TRAP-marks) were detected in the resorption pits stained with Mayer's hematoxylin. Pitted areas were not always located in the places of osteoclasts, but osteoclasts existed on all TRAP-marks. A time course experiment showed that the number of TRAP-marks was maintained, while the number of resorption pits increased with the culture period. The position of actin rings formed in osteoclasts corresponded to that of TRAP-marks on dentin slices. Immunostaining of dentin slices showed that both cathepsin K and vacuolar proton ATPase were colocalized with the TRAP-marks. Treatment of osteoclast cultures with alendronate, a bisphosphonate, suppressed the formation of TRAP-marks and resorption pits without affecting the cell viability. Calcitonin induced the disappearance of both actin rings and TRAP-marks in osteoclast cultures. These results suggest that TRAP-marks are vestiges of proteins secreted by polarized osteoclasts.
Collapse
Affiliation(s)
- Takahiro Nakayama
- Institute for Oral Science, Matsumoto Dental University, Shiojiri-shi, Nagano, 399-0781, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
McBane JE, Battiston KG, Wadhwani A, Sharifpoor S, Labow RS, Santerre JP. The effect of degradable polymer surfaces on co-cultures of monocytes and smooth muscle cells. Biomaterials 2011; 32:3584-95. [DOI: 10.1016/j.biomaterials.2011.01.069] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Accepted: 01/26/2011] [Indexed: 12/13/2022]
|
40
|
Karlström E, Ek-Rylander B, Wendel M, Andersson G. Isolation and phenotypic characterization of a multinucleated tartrate-resistant acid phosphatase–positive bone marrow macrophage. Exp Hematol 2011; 39:339-350.e3. [DOI: 10.1016/j.exphem.2010.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 12/06/2010] [Accepted: 12/21/2010] [Indexed: 01/01/2023]
|
41
|
Briggs TA, Rice GI, Daly S, Urquhart J, Gornall H, Bader-Meunier B, Baskar K, Baskar S, Baudouin V, Beresford MW, Black GCM, Dearman RJ, de Zegher F, Foster ES, Francès C, Hayman AR, Hilton E, Job-Deslandre C, Kulkarni ML, Le Merrer M, Linglart A, Lovell SC, Maurer K, Musset L, Navarro V, Picard C, Puel A, Rieux-Laucat F, Roifman CM, Scholl-Bürgi S, Smith N, Szynkiewicz M, Wiedeman A, Wouters C, Zeef LAH, Casanova JL, Elkon KB, Janckila A, Lebon P, Crow YJ. Tartrate-resistant acid phosphatase deficiency causes a bone dysplasia with autoimmunity and a type I interferon expression signature. Nat Genet 2011; 43:127-31. [PMID: 21217755 PMCID: PMC3030921 DOI: 10.1038/ng.748] [Citation(s) in RCA: 178] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Accepted: 12/06/2010] [Indexed: 01/23/2023]
Abstract
We studied ten individuals from eight families showing features consistent with the immuno-osseus dysplasia spondyloenchondrodysplasia (SPENCD). Of particular note was the diverse spectrum of autoimmune phenotypes observed in these patients, including systemic lupus erythematosus (SLE), Sjögren's syndrome, haemolytic anemia, thrombocytopenia, hypothyroidism, inflammatory myositis, Raynaud's disease, and vitiligo. Haplotype data indicated the disease gene to be on chromosome 19p13 and linkage analysis yielded a combined multipoint lod score of 3.6. Sequencing of the ACP5 gene, encoding tartrate resistant acid phosphatase (TRAP), identified biallelic mutations in each of the patients studied, and in vivo testing confirmed a loss of expressed protein. All eight patients assayed demonstrated elevated serum interferon alpha activity, and gene expression profiling in whole blood defined a type I interferon signature. Our findings reveal a previously unrecognised link between TRAP activity and interferon metabolism, and highlight the importance of type I interferon in the genesis of autoimmunity.
Collapse
Affiliation(s)
- Tracy A Briggs
- Manchester Academic Heath Science Centre, University of Manchester, Genetic Medicine, Manchester, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Lausch E, Janecke A, Bros M, Trojandt S, Alanay Y, De Laet C, Hübner CA, Meinecke P, Nishimura G, Matsuo M, Hirano Y, Tenoutasse S, Kiss A, Machado Rosa RF, Unger SL, Renella R, Bonafé L, Spranger J, Unger S, Zabel B, Superti-Furga A. Genetic deficiency of tartrate-resistant acid phosphatase associated with skeletal dysplasia, cerebral calcifications and autoimmunity. Nat Genet 2011; 43:132-7. [DOI: 10.1038/ng.749] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Accepted: 12/06/2010] [Indexed: 12/16/2022]
|
43
|
McBane JE, Ebadi D, Sharifpoor S, Labow RS, Santerre JP. Differentiation of monocytes on a degradable, polar, hydrophobic, ionic polyurethane: Two-dimensional films vs. three-dimensional scaffolds. Acta Biomater 2011; 7:115-22. [PMID: 20728587 DOI: 10.1016/j.actbio.2010.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Revised: 08/13/2010] [Accepted: 08/16/2010] [Indexed: 01/18/2023]
Abstract
A degradable, polar, hydrophobic, ionic polyurethane (D-PHI), with physical properties comparable to those of peripheral arterial vascular tissue, was evaluated for monocyte interactions with two different physical forms: two-dimensional films and three-dimensional porous scaffolds. Monocytes, isolated from human whole blood, were seeded onto D-PHI films and scaffolds, and differentiated to monocyte-derived macrophages (MDM) for up to 28 days. The effect of surface structure on the MDM phenotype was assessed by assaying: cell attachment (DNA), activation (intracellular protein expression, esterase and acid phosphatase (AP) activity) as well as pro- and anti-inflammatory cytokines (TNF-α and IL-10, respectively). The cells on scaffolds exhibited an initial peak in total protein synthesized per DNA at 3 days; however, both substrates generated similar protein levels per DNA at all other time points. While scaffolds generated more esterase and AP per cell than for films, the cells on films expressed significantly more of these two proteins relative to their total protein produced. At day 7 (acute phase of monocyte activation), cells on films were significantly more activated than monocytes on the scaffolds as assessed by cell morphology and tumor necrosis factor-α and interleukin-10 levels. Histological analysis of scaffolds showed that cells were able to migrate throughout the three-dimensional matrix. By inducing a low inflammatory, high wound-healing phenotype monocyte, the negative effects of the foreign body reaction in vivo may be controlled in a manner possible to direct the vascular tissue cells into the appropriate functional phenotypes necessary for successful tissue engineering.
Collapse
|
44
|
Abstract
Nitrogen-containing bisphosphonates have been associated with the development of osteonecrosis of the jaws (ONJ), but the lack of reliable epidemiological data and appropriate animal models has restricted our understanding of ONJ pathophysiology and limited its management. The best available information is from histopathologic findings, which implicate bone necrosis and infection, although it is not clear which is primary. However, there are data suggesting that macrophages could well be the central factor in allowing the infection to develop first, followed by local necrosis, which could also account for the development of ONJ in patients treated with denosumab, a human monoclonal antibody to the receptor activator of nuclear factor-κB ligand. This review examines the evidence that macrophages could play a prominent role in development of ONJ and the proposal that it may be more appropriate to view ONJ as a drug and not only a bisphosphonate-related complication.
Collapse
Affiliation(s)
- Michael Pazianas
- Institute of Musculoskeletal Sciences, University of Oxford, The Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford, UK.
| |
Collapse
|
45
|
Zenger S, He W, Ek-Rylander B, Vassiliou D, Wedin R, Bauer H, Andersson G. Differential expression of tartrate-resistant acid phosphatase isoforms 5a and 5b by tumor and stromal cells in human metastatic bone disease. Clin Exp Metastasis 2010; 28:65-73. [PMID: 20967488 DOI: 10.1007/s10585-010-9358-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 10/08/2010] [Indexed: 11/30/2022]
Abstract
Tartrate-resistant acid phosphatase (TRAP) exists in human serum as two major isoforms, monomeric 5a and proteolytically processed enzymatically active 5b. The 5b isoform is secreted by osteoclasts and has recently been advocated as a serum marker for bone metastasis in breast cancer patients. The 5a isoform, on the other hand, is not bone-derived and has been proposed to be a marker of activated macrophages and chronic inflammation. In this study, expression of TRAP protein and enzymatic activity in bone metastases from different primary sites was examined. TRAP activity was high in bone metastases from prostate cancer, intermediate in breast cancer, and low in lung and kidney cancers. The partially purified TRAP from breast cancer bone metastasis samples exhibited the enzymatic characteristics of purple acid phosphatase. Both 5a and 5b isoforms were expressed in bone metastases of different histogenetic origins, i.e. prostate, breast, lung and kidney, and also a novel previously unreported 42 kDa variant of the TRAP 5a isoform was identified in bone metastases. This novel TRAP 5a isoform was absent in human bone, indicating that the 42 kDa variant is specific to metastatic cancer tissue. Immunohistochemistry revealed that metastatic cancer cells were the predominant source of TRAP 5a, whereas tumor-associated macrophages and occasionally multinucleated giant cells in the tumor stroma preferentially expressed the proteolytically processed TRAP 5b variant. Our results indicate the presence of a previously unstudied variant of monomeric TRAP 5a in cancer cells, which may have functional and diagnostic implications. Moreover, the presence of TRAP-positive macrophages in bone metastases could, together with cancer cells and osteoclasts, contribute to the elevated levels of serum TRAP activity observed in patients with bone metastases.
Collapse
Affiliation(s)
- Serhan Zenger
- Division of Pathology F 46, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, S-141 86 Huddinge, Sweden.
| | | | | | | | | | | | | |
Collapse
|
46
|
Macrophage differentiation and polarization on a decellularized pericardial biomaterial. Biomaterials 2010; 32:439-49. [PMID: 20933269 DOI: 10.1016/j.biomaterials.2010.09.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Accepted: 09/02/2010] [Indexed: 12/21/2022]
Abstract
The monocyte-derived macrophage (MDM), present at biomaterial implantations, can increase, decrease or redirect the inflammatory and subsequent wound healing process associated with the presence of a biomaterial. Understanding MDM responses to biomaterials is important for improved prediction and design of biomaterials for tissue engineering. This study analyzed the direct differentiation of monocytes on intact, native collagen. Human monocytes were differentiated on decellularized bovine pericardium (DBP), polydimethylsiloxane (PDMS) or polystyrene (TCPS) for 14 d. MDMs on all surfaces released high amounts of MMP-9 compared to MMP-2 and relatively little MMP-1. MDMs differentiated on DBP released more MMP-2, but less acid phosphatase activity. MDMs on all three surfaces released low amounts of cytokines, although substrate differences were found: MDMs on DBP released higher amounts of IL-6, IL-8, and MCP-1 but lower amounts of IL-10 and IL-1ra. This research provides evidence that MDMs on decellularized matrices may not be stimulated towards an activated, inflammatory phenotype, supporting the potential of decellularized matrices for tissue engineering. This study also demonstrated that the differentiation surface affects MDM phenotype and therefore study design of macrophage interactions with biomaterials should scrutinize the specific macrophage culture method utilized and its effects on macrophage phenotype.
Collapse
|
47
|
Ariganello MB, Labow RS, Lee JM. In vitro response of monocyte-derived macrophages to a decellularized pericardial biomaterial. J Biomed Mater Res A 2010; 93:280-8. [PMID: 19562747 DOI: 10.1002/jbm.a.32554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Decellularized tissue-derived heart valves are an example of biomaterials derived from natural scaffolds. These types of implants are increasing in popularity although their in vivo performance is still only poorly understood and has, at times, been catastrophic. It is apparent that better understanding is required before these biomaterials can be used safely. In this study, the human monocyte-derived macrophage (MDM) response to decellularized bovine pericardium (DBP) was used as a model to predict the biological performance of these materials on implantation. Human monocytes differentiated on tissue culture polystyrene (TCPS) for 14 days were trypsinized and reseeded onto DBP, TCPS, and polydimethylsiloxane (PDMS) for 48 h. The MDMs on DBP contained less intracellular and extracellular esterase activity compared with MDMs on TCPS and PDMS, as well as less acid phosphatase activity than on TCPS. As well, morphologically, MDMs on DBP were less spread, less multinucleated and did not display many lamellipodia. Taken together, these data represent the first evidence of the MDM response to intact, native extracellular matrix, demonstrating that these cells reacted with an altered, possibly reduced foreign body response on this natural scaffold compared with the two control surfaces. This in vitro MDM cell model may provide a novel method for predicting and elucidating the biological performance of tissue-derived biomaterials, thereby directing a more rational design of biomaterials for tissue regeneration purposes.
Collapse
|
48
|
Janckila AJ, Yam LT. Biology and clinical significance of tartrate-resistant acid phosphatases: new perspectives on an old enzyme. Calcif Tissue Int 2009; 85:465-83. [PMID: 19915788 DOI: 10.1007/s00223-009-9309-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 10/12/2009] [Indexed: 12/20/2022]
Abstract
Type 5 tartrate-resistant acid phosphatase (TRAP) has been a clinically relevant biomarker for about 50 years. It has always been a reliable and specific cytochemical marker for hairy cell leukemia and for differentiated cells of monocytic lineage. Only recently has the test for serum TRAP activity been accepted as sensitive and specific enough for clinical use as a marker of osteoclasts and bone resorption. This has come about through steady advances in knowledge about TRAP enzymology, structure, function, and molecular regulation and a consequent appreciation that TRAP isoforms 5a and 5b have very different clinical significance. As a measure of osteoclast number and bone resorption, TRAP 5b has diagnostic and prognostic applications in osteoporosis, cancers with bone metastasis, chronic renal failure, and perhaps other metabolic and pathologic bone diseases. Serum TRAP 5a, on the other hand, has no relationship to bone metabolism but seems instead to be a measure of activated macrophages and chronic inflammation. Exploration of the real clinical usefulness of serum TRAP 5a for diagnosis and disease management in a wide variety of chronic inflammatory diseases is only now beginning. This perspective traces the important basic scientific developments that have led up to the refinement of serum TRAP isoform immunoassays and their validation as biomarkers of disease. Many unanswered questions remain, providing a wealth of opportunity for continued research of this multifaceted enzyme.
Collapse
Affiliation(s)
- Anthony J Janckila
- Special Hematology Laboratory, U.S. Department of Veterans Affairs Medical Center, 800 Zorn Ave., Louisville, KY 40206, USA.
| | | |
Collapse
|
49
|
Induction and cellular expression of tartrate resistant acid phosphatase during dextran sodium sulphate induced colitis in rats. Histochem Cell Biol 2009; 132:599-612. [PMID: 19821118 DOI: 10.1007/s00418-009-0647-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2009] [Indexed: 01/28/2023]
Abstract
The aim of this study was to investigate the cellular and molecular expression of tartrate resistant acid phosphatase (TRAP) as a marker of activated macrophages in macrophage dependent dextran sulphate sodium (DSS)-induced colitis in rats. In normal colon, TRAP+/CX(3)CR(1)+ macrophages were located in the upper part of the lamina propria. In the early stage (day 1-3) of acute colitis prior to histopathological changes, induction of the cytokines TNFalpha, IL-12 and IFN gamma occurred concomitant with increased mRNA and enzyme activity of TRAP along with a slight increase of TRAP immunolabelling in macrophages of the upper lamina propria, suggesting induction of TRAP in resident macrophages. Among these cytokines, TNFalpha up-regulated TRAP expression in the RAW 264.7 monocyte/macrophage cell line. In a later phase (day 7) with fulminant colitis, a massive infiltration of macrophages including recruited TRAP+/CCR2+ cells was observed also in the lower part of the lamina propria as well as in the submuscular layer. Additionally, differentiated cellular expression of pro- and mature TRAP also suggest that mucosal macrophages in the lower part of lamina propria bordering the sub-mucosa provide a source of replenishment of macrophages situated in the upper lamina propria. In conclusion, induction of TRAP provides an early sign of macrophage responsiveness in DSS induced colitis.
Collapse
|
50
|
Yu M, Moreno JL, Stains JP, Keegan AD. Complex regulation of tartrate-resistant acid phosphatase (TRAP) expression by interleukin 4 (IL-4): IL-4 indirectly suppresses receptor activator of NF-kappaB ligand (RANKL)-mediated TRAP expression but modestly induces its expression directly. J Biol Chem 2009; 284:32968-79. [PMID: 19801646 DOI: 10.1074/jbc.m109.001016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Interleukin 4 (IL-4) inhibits receptor activator of NF-kappaB ligand (RANKL)-induced osteoclast formation and functional activity in a STAT6-dependent manner. IL-4 down-regulates expression of tartrate-resistant acid phosphatase (TRAP) in mature osteoclasts. To determine whether IL-4 regulates TRAP promoter activity, RAW264.7 cells were transfected with a TRAP promoter-luciferase reporter. Treatment with IL-4 alone modestly enhanced TRAP luciferase activity. However, IL-4 suppressed the ability of RANKL to up-regulate TRAP-luciferase activity, suggesting that IL-4 has multiple effects on TRAP transcription. IL-4 also reduced the RANKL-induced association of RNA polymerase II with the TRAP gene in osteoclasts. The TRAP promoter contains a STAT6-binding motif, and STAT6 bound to the endogenous TRAP promoter after IL-4 treatment. To determine the impact of STAT6 binding, we transfected cells with STAT6VT, a constitutively active STAT6 mutant. STAT6VT alone up-regulated TRAP-luciferase activity; this effect was abrogated by mutating the STAT6 binding site in the minimal TRAP promoter. STAT6VT did not inhibit the potent up-regulation of TRAP promoter activity caused by overexpression of NFATc1, PU.1, and microphthalmia transcription factor, downstream targets of macrophage colony-stimulating factor and RANKL. IL-4 down-regulated the expression of c-Fos and NFATc1 in mature osteoclasts. Knockdown of NFATc1 by short interfering RNA caused TRAP expression to be down-regulated, and ectopic expression of NFATc1 abrogated the IL-4-induced down-regulation of TRAP. These results suggest that STAT6 plays two distinct roles in TRAP expression. The IL-4-induced activation of STAT6 mediates suppression of the RANKL-induced TRAP promoter activity indirectly by inhibiting NFATc1 expression. However, in the absence of RANKL and osteoclast differentiation, STAT6 binds the TRAP promoter after IL-4 treatment and directly enhances TRAP expression.
Collapse
Affiliation(s)
- Minjun Yu
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | | | | | | |
Collapse
|