1
|
Pickard A, Garva R, Adamson A, Calverley BC, Hoyle A, Hayward CE, Spiller D, Lu Y, Hodson N, Mandolfo O, Kim KK, Bou-Gharios G, Swift J, Bigger B, Kadler KE. Collagen fibril formation at the plasma membrane occurs independently from collagen secretion. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.09.593302. [PMID: 38766096 PMCID: PMC11100796 DOI: 10.1101/2024.05.09.593302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Collagen fibrils are the primary supporting scaffold of vertebrate tissues but how they are assembled is unclear. Here, using CRISPR-tagging of type I collagen and SILAC labelling, we elucidate the cellular mechanism for the spatiotemporal assembly of collagen fibrils, in cultured fibroblasts. Our findings reveal multifaceted trafficking of collagen, including constitutive secretion, intracellular pooling, and plasma membrane-directed fibrillogenesis. Notably, we differentiate the processes of collagen secretion and fibril assembly and identify the crucial involvement of endocytosis in regulating fibril formation. By employing Col1a1 knockout fibroblasts we demonstrate the incorporation of exogenous collagen into nucleation sites at the plasma membrane through these recycling mechanisms. Our study sheds light on the assembly process and its regulation in health and disease. Mass spectrometry data are available via ProteomeXchange with identifier PXD036794.
Collapse
|
2
|
MPSI Manifestations and Treatment Outcome: Skeletal Focus. Int J Mol Sci 2022; 23:ijms231911168. [PMID: 36232472 PMCID: PMC9569890 DOI: 10.3390/ijms231911168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 11/23/2022] Open
Abstract
Mucopolysaccharidosis type I (MPSI) (OMIM #252800) is an autosomal recessive disorder caused by pathogenic variants in the IDUA gene encoding for the lysosomal alpha-L-iduronidase enzyme. The deficiency of this enzyme causes systemic accumulation of glycosaminoglycans (GAGs). Although disease manifestations are typically not apparent at birth, they can present early in life, are progressive, and include a wide spectrum of phenotypic findings. Among these, the storage of GAGs within the lysosomes disrupts cell function and metabolism in the cartilage, thus impairing normal bone development and ossification. Skeletal manifestations of MPSI are often refractory to treatment and severely affect patients’ quality of life. This review discusses the pathological and molecular processes leading to impaired endochondral ossification in MPSI patients and the limitations of current therapeutic approaches. Understanding the underlying mechanisms responsible for the skeletal phenotype in MPSI patients is crucial, as it could lead to the development of new therapeutic strategies targeting the skeletal abnormalities of MPSI in the early stages of the disease.
Collapse
|
3
|
Buchl SC, Hanquier Z, Haak AJ, Thomason YM, Huebert RC, Shah VH, Maiers JL. Traf2 and NCK Interacting Kinase Is a Critical Regulator of Procollagen I Trafficking and Hepatic Fibrogenesis in Mice. Hepatol Commun 2022; 6:593-609. [PMID: 34677004 PMCID: PMC8870049 DOI: 10.1002/hep4.1835] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
Hepatic fibrosis is driven by deposition of matrix proteins following liver injury. Hepatic stellate cells (HSCs) drive fibrogenesis, producing matrix proteins, including procollagen I, which matures into collagen I following secretion. Disrupting intracellular procollagen processing and trafficking causes endoplasmic reticulum stress and stress-induced HSC apoptosis and thus is an attractive antifibrotic strategy. We designed an immunofluorescence-based small interfering RNA (siRNA) screen to identify procollagen I trafficking regulators, hypothesizing that these proteins could serve as antifibrotic targets. A targeted siRNA screen was performed using immunofluorescence to detect changes in intracellular procollagen I. Tumor necrosis factor receptor associated factor 2 and noncatalytic region of tyrosine kinase-interacting kinase (TNIK) was identified and interrogated in vitro and in vivo using the TNIK kinase inhibitor NCB-0846 or RNA interference-mediated knockdown. Our siRNA screen identified nine genes whose knockdown promoted procollagen I retention, including the serine/threonine kinase TNIK. Genetic deletion or pharmacologic inhibition of TNIK through the small molecule inhibitor NCB-0846 disrupted procollagen I trafficking and secretion without impacting procollagen I expression. To investigate the role of TNIK in liver fibrogenesis, we analyzed human and murine livers, finding elevated TNIK expression in human cirrhotic livers and increased TNIK expression and kinase activity in both fibrotic mouse livers and activated primary human HSCs. Finally, we tested whether inhibition of TNIK kinase activity could limit fibrogenesis in vivo. Mice receiving NCB-0846 displayed reduced CCl4 -induced fibrogenesis compared to CCl4 alone, although α-smooth muscle actin levels were unaltered. Conclusions: Our siRNA screen effectively identified TNIK as a key kinase involved in procollagen I trafficking in vitro and hepatic fibrogenesis in vivo.
Collapse
Affiliation(s)
- Samuel C Buchl
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Zachary Hanquier
- Department of Medical and Molecular GeneticsIndiana University School of MedicineIndianapolisINUSA
| | - Andrew J Haak
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Yvonne M Thomason
- Division of GastroenterologyIndiana University School of MedicineIndianapolisINUSA
| | - Robert C Huebert
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Vijay H Shah
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Jessica L Maiers
- Division of GastroenterologyIndiana University School of MedicineIndianapolisINUSA
| |
Collapse
|
4
|
邢 磊, 耿 远, 李 文, 林 丽, 徐 平. [Expression of RUNX2/LAPTM5 in MC3T3-E1 osteoblastic cells with induced mineralization]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1394-1399. [PMID: 34658355 PMCID: PMC8526321 DOI: 10.12122/j.issn.1673-4254.2021.09.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the association of the expressions of RUNX2/LAPTM5 with osteogenesis and lysosomes in osteoblastic cells during mineralization induction. METHODS MC3T3- E1 cells cultured in osteogenic induction medium was examined for mineralization and osteogenic differentiation using Alizarin red staining and alkaline phosphatase (ALP) staining, respectively. RT-qPCR and Western blotting were used to detect the mRNA and protein expressions of Runx2 and LAPTM5 in the cells during osteogenic induction for 5 days. The effects of overexpression and interference of RUNX2/ LAPTM5 on the expressions of ALP and osteocalcin (OCN) in the cells were examined with Western blotting. RESULTS MC3T3- E1 cells cultured in osteogenic induction medium showed an increased number of mineralized nodules over time, and the size of the mineralized nodules increased as the culture time extended; the number of purple-blue granules stained by ALP also increased gradually with time. RT-qPCR and Western blotting showed that the expressions of RUNX2 and LAPTM5 in the cells increased progressively during osteogenic mineralization (P < 0.001). Overexpression and interference of RUNX2 obviously affected LAPTM5 expression in the cells (P < 0.05); modulation of LAPTM5 expression did not significantly affect RUNX2 expression but caused significant changes in ALP and OCN expressions (P < 0.01). CONCLUSION RUNX2 /LAPTM5 may participate in the regulation of osteoblast differentiation, and RUNX2 may be involved in the regulation of LAPTM5 expression. RUNX2 /LAPTM5 may play a mediating role in the process of osteogenic mineralization involving lysosomes.
Collapse
Affiliation(s)
- 磊 邢
- 广州医科大学附属口腔医院种植科//广州市口腔再生医学基础与应用研究重点实验室,广东 广州 510182Department of Oral Implantology, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research in Oral Regenerative Medicine, Guangzhou 510182, China
| | - 远明 耿
- 南方医科大学珠江医院口腔科,广东 广州 510282Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - 文昊 李
- 南方医科大学口腔医院,广东 广州 510280Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - 丽佳 林
- 南方医科大学口腔医院,广东 广州 510280Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - 平平 徐
- 南方医科大学口腔医院,广东 广州 510280Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| |
Collapse
|
5
|
do Couto NF, Queiroz-Oliveira T, Horta MF, Castro-Gomes T, Andrade LO. Measuring Intracellular Vesicle Density and Dispersion Using Fluorescence Microscopy and ImageJ/FIJI. Bio Protoc 2020; 10:e3703. [PMID: 33659367 DOI: 10.21769/bioprotoc.3703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/20/2020] [Accepted: 05/26/2020] [Indexed: 11/02/2022] Open
Abstract
Cell signalling, cell secretion, and plasma membrane repair are processes that critically rely on intracellular vesicles, important components of the endocytic and secretory pathways. More specifically, the strategic distribution of intracellular vesicles is important for diverse cellular processes. The method presented here is a simple, affordable, and efficient tool to analyze the distribution of intracellular vesicles such as lysosomes, endosomes, Golgi vesicles or secretory granules under different experimental conditions. The method is an accessible way to analyze the density and dispersion of intracellular vesicles by combining immunofluorescence with pixel-based quantification software (e.g., ImageJ/FIJI). This protocol can be used widely within the scientific community because it utilizes ImageJ/FIJI, an open source software that is free. By tracking fluorescent vesicles based on their position relative to cell nuclei we are able to quantify and analyze their distribution throughout the cell.
Collapse
Affiliation(s)
- Natália Fernanda do Couto
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Thamires Queiroz-Oliveira
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Maria Fátima Horta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Thiago Castro-Gomes
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Luciana Oliveira Andrade
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| |
Collapse
|
6
|
Modeling Glycan Processing Reveals Golgi-Enzyme Homeostasis upon Trafficking Defects and Cellular Differentiation. Cell Rep 2020; 27:1231-1243.e6. [PMID: 31018136 PMCID: PMC6486481 DOI: 10.1016/j.celrep.2019.03.107] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/24/2019] [Accepted: 03/27/2019] [Indexed: 01/11/2023] Open
Abstract
The decoration of proteins by carbohydrates is essential for eukaryotic life yet heterogeneous due to a lack of biosynthetic templates. This complex carbohydrate mixture—the glycan profile—is generated in the compartmentalized Golgi, in which level and localization of glycosylation enzymes are key determinants. Here, we develop and validate a computational model for glycan biosynthesis to probe how the biosynthetic machinery creates different glycan profiles. We combined stochastic modeling with Bayesian fitting that enables rigorous comparison to experimental data despite starting with uncertain initial parameters. This is an important development in the field of glycan modeling, which revealed biological insights about the glycosylation machinery in altered cellular states. We experimentally validated changes in N-linked glycan-modifying enzymes in cells with perturbed intra-Golgi-enzyme sorting and the predicted glycan-branching activity during osteogenesis. Our model can provide detailed information on altered biosynthetic paths, with potential for advancing treatments for glycosylation-related diseases and glyco-engineering of cells. Developed a stochastic model of N-glycosylation coupled with Bayesian fitting Validated predicted changes of Golgi organization in trafficking mutants Model pinpointed functionally relevant glycan alterations in osteogenesis
Collapse
|
7
|
Geng YM, Liu CX, Lu WY, Liu P, Yuan PY, Liu WL, Xu PP, Shen XQ. LAPTM5 is transactivated by RUNX2 and involved in RANKL trafficking in osteoblastic cells. Mol Med Rep 2019; 20:4193-4201. [PMID: 31545469 PMCID: PMC6797998 DOI: 10.3892/mmr.2019.10688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 07/31/2019] [Indexed: 02/03/2023] Open
Abstract
The present study aimed to investigate the role of lysosomal-associated transmembrane protein 5 (LAPTM5) in osteoclast differentiation induced by osteoblasts. The results demonstrated that the expression levels of LAPTM5 were downregulated following runt-related transcription factor 2 (RUNX2) silencing and upregulated following RUNX2 overexpression in ST2 cells. Chromatin immunoprecipitation analysis identified the binding of RUNX2 to the LAPTM5 promoter at the −1176 to −1171 position. Dual-luciferase reporter assays confirmed that RUNX2 directly activated the LAPTM5 gene. The concentration of receptor activator of nuclear factor-κB ligand (RANKL) protein in the cytoplasm and in the media was significantly increased following LAPTM5 knockdown. LAPTM5 silencing in ST2 cells enhanced osteoclastic differentiation of co-cultured RAW264.7 cells. The present study indicated that expression of LAPTM5 was regulated by the interaction of RUNX2 with its promoter region and that LAPTM5 was involved in the trafficking of RANKL. These findings suggested a possible coupling mechanism between osteogenesis and osteoclastogenesis in which RUNX2 may be involved in osteoclast differentiation through the regulation of the lysosome-associated genes that modulate RANKL expression.
Collapse
Affiliation(s)
- Yuan-Ming Geng
- Department of Stomatology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Cheng-Xia Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Wei-Ying Lu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Ping Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Pei-Yan Yuan
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Wei-Long Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Ping-Ping Xu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| | - Xiao-Qing Shen
- Department of Stomatology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, P.R. China
| |
Collapse
|
8
|
Zhang N, Jiang H, Bai Y, Lu X, Feng M, Guo Y, Zhang S, Luo Q, Wu H, Wang L. The molecular mechanism study of insulin on proliferation and differentiation of osteoblasts under high glucose conditions. Cell Biochem Funct 2019; 37:385-394. [PMID: 31140646 DOI: 10.1002/cbf.3415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/02/2019] [Accepted: 05/11/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Nong Zhang
- Department of StomatologyShenzhen Longgang District Maternal and Child Health Care Hospital Shenzhen China
| | - Hua Jiang
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Yang Bai
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Xingmei Lu
- Department of Chemical Engineering and Technology, a CAS key Laboratory of Green Process and Engineering, Institute of Process Engineering, China B college of Chemical and Engineering, University of Chinese Academy of SciencesChinese Academy of Sciences Beijing China
| | - Mi Feng
- Department of Applied Chemistry, a CAS key Laboratory of Green Process and Engineering, Institute of Process Engineering, China B college of Chemical and Engineering, University of Chinese Academy of SciencesChinese Academy of Sciences Beijing China
| | - Yu Guo
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Shuo Zhang
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Qiang Luo
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Hao Wu
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| | - Lin Wang
- Department of StomatologyGeneral Hospital of Chinese People's Liberation Army Beijing China
| |
Collapse
|
9
|
Panicker LM, Srikanth MP, Castro-Gomes T, Miller D, Andrews NW, Feldman RA. Gaucher disease iPSC-derived osteoblasts have developmental and lysosomal defects that impair bone matrix deposition. Hum Mol Genet 2019; 27:811-822. [PMID: 29301038 DOI: 10.1093/hmg/ddx442] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/27/2017] [Indexed: 01/18/2023] Open
Abstract
Gaucher disease (GD) is caused by bi-allelic mutations in GBA1, the gene that encodes acid β-glucocerebrosidase (GCase). Individuals affected by GD have hematologic, visceral and bone abnormalities, and in severe cases there is also neurodegeneration. To shed light on the mechanisms by which mutant GBA1 causes bone disease, we examined the ability of human induced pluripotent stem cells (iPSC) derived from patients with Types 1, 2 and 3 GD, to differentiate to osteoblasts and carry out bone deposition. Differentiation of GD iPSC to osteoblasts revealed that these cells had developmental defects and lysosomal abnormalities that interfered with bone matrix deposition. Compared with controls, GD iPSC-derived osteoblasts exhibited reduced expression of osteoblast differentiation markers, and bone matrix protein and mineral deposition were defective. Concomitantly, canonical Wnt/β catenin signaling in the mutant osteoblasts was downregulated, whereas pharmacological Wnt activation with the GSK3β inhibitor CHIR99021 rescued GD osteoblast differentiation and bone matrix deposition. Importantly, incubation with recombinant GCase (rGCase) rescued the differentiation and bone-forming ability of GD osteoblasts, demonstrating that the abnormal GD phenotype was caused by GCase deficiency. GD osteoblasts were also defective in their ability to carry out Ca2+-dependent exocytosis, a lysosomal function that is necessary for bone matrix deposition. We conclude that normal GCase enzymatic activity is required for the differentiation and bone-forming activity of osteoblasts. Furthermore, the rescue of bone matrix deposition by pharmacological activation of Wnt/β catenin in GD osteoblasts uncovers a new therapeutic target for the treatment of bone abnormalities in GD.
Collapse
Affiliation(s)
- Leelamma M Panicker
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Manasa P Srikanth
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Thiago Castro-Gomes
- Department of Cell Biology and Molecular Genetics, University of Maryland College Park, MD 20742, USA
| | - Diana Miller
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Norma W Andrews
- Department of Cell Biology and Molecular Genetics, University of Maryland College Park, MD 20742, USA
| | - Ricardo A Feldman
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| |
Collapse
|
10
|
Soares Cavalcante-Costa V, Costa-Reginaldo M, Queiroz-Oliveira T, Silva Oliveira AC, Couto NF, dos Anjos DO, Lima-Santos J, Andrade LDO, Horta MF, Castro-Gomes T. Leishmania amazonensis hijacks host cell lysosomes involved in plasma membrane repair to induce invasion in fibroblasts. J Cell Sci 2019; 132:jcs.226183. [DOI: 10.1242/jcs.226183] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 02/12/2019] [Indexed: 11/20/2022] Open
Abstract
Intracellular parasites of the genus Leishmania are the causative agents of leishmaniasis. The disease is transmitted by the bite of a sand fly vector which inoculates the parasite into the skin of mammalian hosts, including humans. During chronic infection the parasite lives and replicates inside phagocytic cells, notably the macrophages. An interesting but overlooked finding is that other cell types and even non-phagocytic cells have been found infected by Leishmania spp. Nevertheless, the mechanisms by which Leishmania invades such cells were not studied to date. Here we show that L. amazonensis can actively induce their own entry into fibroblasts independently of actin cytoskeleton activity, thus by a mechanism that is distinct from phagocytosis. Invasion involves subversion of host cell functions such as calcium signaling and recruitment and exocytosis of host cell lysosomes involved in plasma membrane repair.
Collapse
Affiliation(s)
- Victor Soares Cavalcante-Costa
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Mariana Costa-Reginaldo
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Thamires Queiroz-Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Anny Carolline Silva Oliveira
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Natália Fernanda Couto
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | | | - Jane Lima-Santos
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Bahia, Brasil
| | - Luciana de Oliveira Andrade
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Maria Fátima Horta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| | - Thiago Castro-Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brasil
| |
Collapse
|
11
|
Maacha S, Hong J, von Lersner A, Zijlstra A, Belkhiri A. AXL Mediates Esophageal Adenocarcinoma Cell Invasion through Regulation of Extracellular Acidification and Lysosome Trafficking. Neoplasia 2018; 20:1008-1022. [PMID: 30189359 PMCID: PMC6126204 DOI: 10.1016/j.neo.2018.08.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/06/2018] [Accepted: 08/14/2018] [Indexed: 12/14/2022]
Abstract
Esophageal adenocarcinoma (EAC) is a highly aggressive malignancy that is characterized by resistance to chemotherapy and a poor clinical outcome. The overexpression of the receptor tyrosine kinase AXL is frequently associated with unfavorable prognosis in EAC. Although it is well documented that AXL mediates cancer cell invasion as a downstream effector of epithelial-to-mesenchymal transition, the precise molecular mechanism underlying this process is not completely understood. Herein, we demonstrate for the first time that AXL mediates cell invasion through the regulation of lysosomes peripheral distribution and cathepsin B secretion in EAC cell lines. Furthermore, we show that AXL-dependent peripheral distribution of lysosomes and cell invasion are mediated by extracellular acidification, which is potentiated by AXL-induced secretion of lactate through AKT-NF-κB-dependent MCT-1 regulation. Our novel mechanistic findings support future clinical studies to evaluate the therapeutic potential of the AXL inhibitor R428 (BGB324) in highly invasive EAC.
Collapse
Affiliation(s)
- Selma Maacha
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jun Hong
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Ariana von Lersner
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN 37240, USA
| | - Andries Zijlstra
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN 37240, USA
| | - Abbes Belkhiri
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
| |
Collapse
|
12
|
Jover E, Silvente A, Marin F, Martinez‐Gonzalez J, Orriols M, Martinez CM, Puche CM, Valdés M, Rodriguez C, Hernández‐Romero D. Inhibition of enzymes involved in collagen cross‐linking reduces vascular smooth muscle cell calcification. FASEB J 2018; 32:4459-4469. [DOI: 10.1096/fj.201700653r] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Eva Jover
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
- Bristol Medical School of Translational Health SciencesUniversity of BristolBristolUnited Kingdom
| | - Ana Silvente
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
| | - Francisco Marin
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
| | - Jose Martinez‐Gonzalez
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
- Instituto de Investigaciones Biomédicas de Barcelona‐Consejo Superior de Investigaciones Cientificas (IIBB‐CSIC)Institut d'Investigacions Biomèdiques (IIB)‐Sant PauBarcelonaSpain
| | - Mar Orriols
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
| | | | - Carmen María Puche
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
| | - Mariano Valdés
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
| | - Cristina Rodriguez
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau‐Programa Instituto Catalán de Ciencias Cardiovasculares (ICCC)IIB‐Sant PauBarcelonaSpain
| | - Diana Hernández‐Romero
- Hospital Clínico Universitario Virgen de la ArrixacaUniversidad de MurciaInstituto Murciano de Investigatión Biosanitaria (IMIB)‐ArrixacaMurciaSpain
- Centro de Investigatión Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
| |
Collapse
|
13
|
Tsukuba T, Sakai E, Nishishita K, Kadowaki T, Okamoto K. New functions of lysosomes in bone cells. J Oral Biosci 2017. [DOI: 10.1016/j.job.2017.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
14
|
Li W, Chang Y, Liang S, Zhong Z, Li X, Wen J, Zhang Y, Zhang J, Wang L, Lin H, Cao X, Huang H, Zhong F. NLRP3 inflammasome activation contributes to Listeria monocytogenes-induced animal pregnancy failure. BMC Vet Res 2016; 12:36. [PMID: 26911557 PMCID: PMC4765044 DOI: 10.1186/s12917-016-0655-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 02/15/2016] [Indexed: 12/11/2022] Open
Abstract
Background Listeria monocytogenes (LM), a foodborne pathogen, can cause pregnancy failure in animals, especially in ruminants. Recent studies have shown that LM activates inflammasomes to induce IL-1β release in macrophages, however, whether the inflammasome activation regulates LM-induced pregnancy failure remains largely unknown. Here we used mouse model to investigate the molecular mechanism by which LM-induced inflammsome activation contributes to LM-associated pregnancy failure Results We showed that wild-type, but not Listeriolysin O-deficient (Δhly) LM, significantly reduced mouse embryo survival, accompanied by the increase of IL-1β release and caspase-1 activation. IL-1β neutralization significantly reduced the LM-induced embryo losses, suggesting that LM-induced pregnancy failure was associated with LLO-induced inflammasome activation. To dissect the inflammasome sensor and components responsible for LM-induced caspase-1 activation and IL-1β production, we used wild-type and NLRP3−/−, AIM2−/−, NLRC4−/−, ASC−/−, caspase-1−/− and cathepsin B−/− mouse macrophages to test the roles of these molecules in LM-induce IL-1β production. We found that NLRP3 inflammasome was the main pathway in LM-induced caspase-1 activation and IL-1β production. To explore the mechanism of LM-induced pregnancy failure, we investigated the effects of LM-infected macrophages on SM9-1 mouse trophoblasts. We found that the conditioned medium from LM-infected-macrophage or the recombinant IL-1β significantly up-regulated TNFα, IL-6 and IL-8 productions in trophoblasts, suggesting that the LM-induced macrophage inflammasome activation increased trophoblast pro-inflammatory cytokine production, which was adverse to the animal pregnancy maintenance. Conclusions Our data demonstrated that the LLO-induced NLRP3 inflammasome activation plays a key role in LM-induced pregnancy failure, and inflammasome-mediated macrophage dysregulation on trophoblasts might be involved in the pregnancy failure.
Collapse
Affiliation(s)
- Wenyan Li
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China. .,Department of Biology, School of Medicine, Hebei University, Baoding, 071000, China.
| | - Yumei Chang
- Department of Gynaecology and Obstetrics, 252 Hospital of Chinese PLA, Baoding, 071000, China.
| | - Shuang Liang
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
| | - Zhenyu Zhong
- Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
| | - Xiujin Li
- Department of Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China.
| | - Jiexia Wen
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China.
| | - Yonghong Zhang
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China.
| | - Jianlou Zhang
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China.
| | - Liyue Wang
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China.
| | - Hongyu Lin
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China. .,Department of Biotechnology, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China.
| | - Xuebin Cao
- Department of Gynaecology and Obstetrics, 252 Hospital of Chinese PLA, Baoding, 071000, China.
| | - Heling Huang
- Department of Gynaecology and Obstetrics, 252 Hospital of Chinese PLA, Baoding, 071000, China.
| | - Fei Zhong
- Laboratory of Molecular Virology and Immunology, College of Veterinary Medicine, Agricultural University of Hebei; Hebei Engineering and Technology Research Center of Veterinary Biotechnology, Baoding, 071000, China.
| |
Collapse
|
15
|
Role of Ostm1 Cytosolic Complex with Kinesin 5B in Intracellular Dispersion and Trafficking. Mol Cell Biol 2015; 36:507-21. [PMID: 26598607 DOI: 10.1128/mcb.00656-15] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 11/17/2015] [Indexed: 01/05/2023] Open
Abstract
In humans and in mice, mutations in the Ostm1 gene cause the most severe form of osteopetrosis, a major bone disease, and neuronal degeneration, both of which are associated with early death. To gain insight into Ostm1 function, we first investigated by sequence and biochemical analysis an immature 34-kDa type I transmembrane Ostm1 protein with a unique cytosolic tail. Mature Ostm1 is posttranslationally processed and highly N-glycosylated and has an apparent mass of ∼60 kDa. Analysis the subcellular localization of Ostm1 showed that it is within the endoplasmic reticulum, trans-Golgi network, and endosomes/lysosomes. By a wide protein screen under physiologic conditions, several novel cytosolic Ostm1 partners were identified and validated, for which a direct interaction with the kinesin 5B heavy chains was demonstrated. These results determined that Ostm1 is part of a cytosolic scaffolding multiprotein complex, imparting an adaptor function to Ostm1. Moreover, we uncovered a role for the Ostm1/KIF5B complex in intracellular trafficking and dispersion of cargos from the endoplasmic reticulum to late endosomal/lysosomal subcellular compartments. These Ostm1 molecular and cellular functions could elucidate all of the pathophysiologic mechanisms underlying the wide phenotypic spectrum of Ostm1-deficient mice.
Collapse
|
16
|
Yoneshima E, Okamoto K, Sakai E, Nishishita K, Yoshida N, Tsukuba T. The Transcription Factor EB (TFEB) Regulates Osteoblast Differentiation Through ATF4/CHOP-Dependent Pathway. J Cell Physiol 2015; 231:1321-33. [PMID: 26519689 DOI: 10.1002/jcp.25235] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 10/29/2015] [Indexed: 01/08/2023]
Abstract
Osteoblasts are bone-forming cells that produce large amounts of collagen type I and various bone matrix proteins. Although osteoblast differentiation is highly regulated by various factors, it remains unknown whether lysosomes are directly involved in osteoblast differentiation. Here, we demonstrate the transcription factor EB (TFEB), a master regulator of lysosomal biogenesis, modulates osteoblast differentiation. The expression levels of TFEB as well as those of endosomal/lysosomal proteins were up-regulated during osteoblast differentiation using mouse osteoblastic MC3T3-E1 cells. By gene knockdown (KD) experiments with small interfering RNA (siRNA), TFEB depletion caused markedly reduced osteoblast differentiation as compared with the control cells. Conversely, overexpression (OE) of TFEB resulted in strikingly enhanced osteoblastogenesis compared to the control cells. By analysis of down-stream effector molecules, TFEB KD was found to cause marked up-regulation of activating transcription factor 4 (ATF4) and CCAAT/enhancer-binding protein homologous protein (CHOP), both of which are essential factors for osteoblastogenesis. In contrast, TFEB OE promoted osteoblast differentiation through reduced expression of ATF4 and CHOP without differentiation agents. Given the importance of ATF4 and CHOP in osteoblastogenesis, it is clear that the TFEB-regulated signaling pathway for osteoblast differentiation is involved in ATF4/CHOP-dependent signaling pathway.
Collapse
Affiliation(s)
- Erika Yoneshima
- Division of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.,Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kuniaki Okamoto
- Division of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Eiko Sakai
- Division of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kazuhisa Nishishita
- Division of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Noriaki Yoshida
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Takayuki Tsukuba
- Division of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| |
Collapse
|
17
|
Pustylnik S, Fiorino C, Nabavi N, Zappitelli T, da Silva R, Aubin JE, Harrison RE. EB1 levels are elevated in ascorbic Acid (AA)-stimulated osteoblasts and mediate cell-cell adhesion-induced osteoblast differentiation. J Biol Chem 2013; 288:22096-110. [PMID: 23740245 DOI: 10.1074/jbc.m113.481515] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Osteoblasts are differentiated mesenchymal cells that function as the major bone-producing cells of the body. Differentiation cues including ascorbic acid (AA) stimulation provoke intracellular changes in osteoblasts leading to the synthesis of the organic portion of the bone, which includes collagen type I α1, proteoglycans, and matrix proteins, such as osteocalcin. During our microarray analysis of AA-stimulated osteoblasts, we observed a significant up-regulation of the microtubule (MT) plus-end binding protein, EB1, compared with undifferentiated osteoblasts. EB1 knockdown significantly impaired AA-induced osteoblast differentiation, as detected by reduced expression of osteoblast differentiation marker genes. Intracellular examination of AA-stimulated osteoblasts treated with EB1 siRNA revealed a reduction in MT stability with a concomitant loss of β-catenin distribution at the cell cortex and within the nucleus. Diminished β-catenin levels in EB1 siRNA-treated osteoblasts paralleled an increase in phospho-β-catenin and active glycogen synthase kinase 3β, a kinase known to target β-catenin to the proteasome. EB1 siRNA treatment also reduced the expression of the β-catenin gene targets, cyclin D1 and Runx2. Live immunofluorescent imaging of differentiated osteoblasts revealed a cortical association of EB1-mcherry with β-catenin-GFP. Immunoprecipitation analysis confirmed an interaction between EB1 and β-catenin. We also determined that cell-cell contacts and cortically associated EB1/β-catenin interactions are necessary for osteoblast differentiation. Finally, using functional blocking antibodies, we identified E-cadherin as a major contributor to the cell-cell contact-induced osteoblast differentiation.
Collapse
Affiliation(s)
- Sofia Pustylnik
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada
| | | | | | | | | | | | | |
Collapse
|
18
|
Zhao H. Membrane trafficking in osteoblasts and osteoclasts: new avenues for understanding and treating skeletal diseases. Traffic 2012; 13:1307-14. [PMID: 22759194 DOI: 10.1111/j.1600-0854.2012.01395.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 06/28/2012] [Accepted: 07/03/2012] [Indexed: 12/21/2022]
Abstract
The endocytic and exocytic/secretory pathways are two major intracellular membrane trafficking routes that regulate numerous cellular functions in a variety of cell types. Osteoblasts and osteoclasts, two major bone cells responsible for bone remodeling and homeostasis, are no exceptions. During the past few years, emerging evidence has pinpointed a critical role for endocytic and secretory pathways in osteoblast and osteoclast differentiation and function. The endosomal membrane provides a platform to integrate bone tropic signals of hormones and growth factors in osteoblasts. In osteoclasts, endocytosis, followed by transcytosis, of degraded bone matrix promotes bone resorption. Secretory pathways, especially lysosome secretion, not only participate in bone matrix deposition by osteoblasts and degradation of mineralized bone matrix by osteoclasts; they may also be involved in the coupling of bone resorption and bone formation during bone remodeling. More importantly, mutations in genes encoding regulatory factors within the endocytic and secretory pathways have been identified as causes for bone diseases. Identification of the molecular mechanisms of these genes in bone cells may provide new therapeutic targets for skeletal disorders.
Collapse
Affiliation(s)
- Haibo Zhao
- Department of Internal Medicine, Center for Osteoporosis and Bone Metabolic Diseases, College of Medicine, University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR, 72205, USA.
| |
Collapse
|
19
|
Kristensen LP, Chen L, Nielsen MO, Qanie DW, Kratchmarova I, Kassem M, Andersen JS. Temporal profiling and pulsed SILAC labeling identify novel secreted proteins during ex vivo osteoblast differentiation of human stromal stem cells. Mol Cell Proteomics 2012; 11:989-1007. [PMID: 22801418 DOI: 10.1074/mcp.m111.012138] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
It is well established that bone forming cells (osteoblasts) secrete proteins with autocrine, paracrine, and endocrine function. However, the identity and functional role for the majority of these secreted and differentially expressed proteins during the osteoblast (OB) differentiation process, is not fully established. To address these questions, we quantified the temporal dynamics of the human stromal (mesenchymal, skeletal) stem cell (hMSC) secretome during ex vivo OB differentiation using stable isotope labeling by amino acids in cell culture (SILAC). In addition, we employed pulsed SILAC labeling to distinguish genuine secreted proteins from intracellular contaminants. We identified 466 potentially secreted proteins that were quantified at 5 time-points during 14-days ex vivo OB differentiation including 41 proteins known to be involved in OB functions. Among these, 315 proteins exhibited more than 2-fold up or down-regulation. The pulsed SILAC method revealed a strong correlation between the fraction of isotope labeling and the subset of proteins known to be secreted and involved in OB differentiation. We verified SILAC data using qRT-PCR analysis of 9 identified potential novel regulators of OB differentiation. Furthermore, we studied the biological effects of one of these proteins, the hormone stanniocalcin 2 (STC2) and demonstrated its autocrine effects in enhancing osteoblastic differentiation of hMSC. In conclusion, combining complete and pulsed SILAC labeling facilitated the identification of novel factors produced by hMSC with potential role in OB differentiation. Our study demonstrates that the secretome of osteoblastic cells is more complex than previously reported and supports the emerging evidence that osteoblastic cells secrete proteins with endocrine functions and regulate cellular processes beyond bone formation.
Collapse
Affiliation(s)
- Lars P Kristensen
- Center for Experimental Bioinformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense
| | | | | | | | | | | | | |
Collapse
|
20
|
Al-Jallad HF, Myneni VD, Piercy-Kotb SA, Chabot N, Mulani A, Keillor JW, Kaartinen MT. Plasma membrane factor XIIIA transglutaminase activity regulates osteoblast matrix secretion and deposition by affecting microtubule dynamics. PLoS One 2011; 6:e15893. [PMID: 21283799 PMCID: PMC3024320 DOI: 10.1371/journal.pone.0015893] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 11/30/2010] [Indexed: 11/19/2022] Open
Abstract
Transglutaminase activity, arising potentially from transglutaminase 2 (TG2) and
Factor XIIIA (FXIIIA), has been linked to osteoblast differentiation where it is
required for type I collagen and fibronectin matrix deposition. In this study we
have used an irreversible TG-inhibitor to ‘block –and-track’
enzyme(s) targeted during osteoblast differentiation. We show that the
irreversible TG-inhibitor is highly potent in inhibiting osteoblast
differentiation and mineralization and reduces secretion of both fibronectin and
type I collagen and their release from the cell surface. Tracking of the dansyl
probe by Western blotting and immunofluorescence microscopy demonstrated that
the inhibitor targets plasma membrane-associated FXIIIA. TG2 appears not to
contribute to crosslinking activity on the osteoblast surface. Inhibition of
FXIIIA with NC9 resulted in defective secretory vesicle delivery to the plasma
membrane which was attributable to a disorganized microtubule network and
decreased microtubule association with the plasma membrane. NC9 inhibition of
FXIIIA resulted in destabilization of microtubules as assessed by cellular
Glu-tubulin levels. Furthermore, NC9 blocked modification of Glu-tubulin into
150 kDa high-molecular weight Glu-tubulin form which was specifically localized
to the plasma membrane. FXIIIA enzyme and its crosslinking activity were
colocalized with plasma membrane-associated tubulin, and thus, it appears that
FXIIIA crosslinking activity is directed towards stabilizing the interaction of
microtubules with the plasma membrane. Our work provides the first mechanistic
cues as to how transglutaminase activity could affect protein secretion and
matrix deposition in osteoblasts and suggests a novel function for plasma
membrane FXIIIA in microtubule dynamics.
Collapse
Affiliation(s)
- Hadil F. Al-Jallad
- Division of Biomedical Sciences, Faculty of Dentistry, McGill University,
Montreal, Quebec, Canada
| | - Vamsee D. Myneni
- Division of Biomedical Sciences, Faculty of Dentistry, McGill University,
Montreal, Quebec, Canada
| | - Sarah A. Piercy-Kotb
- Division of Biomedical Sciences, Faculty of Dentistry, McGill University,
Montreal, Quebec, Canada
- Division of Experimental Medicine, Department of Medicine, Faculty of
Medicine, McGill University, Montreal, Quebec, Canada
| | - Nicolas Chabot
- Department of Chemistry, Faculty of Arts and Science, Université
de Montréal, Montreal, Quebec, Canada
| | - Amina Mulani
- Department of Chemistry, Faculty of Arts and Science, Université
de Montréal, Montreal, Quebec, Canada
| | - Jeffrey W. Keillor
- Department of Chemistry, Faculty of Arts and Science, Université
de Montréal, Montreal, Quebec, Canada
| | - Mari T. Kaartinen
- Division of Biomedical Sciences, Faculty of Dentistry, McGill University,
Montreal, Quebec, Canada
- Division of Experimental Medicine, Department of Medicine, Faculty of
Medicine, McGill University, Montreal, Quebec, Canada
- * E-mail:
| |
Collapse
|
21
|
He J, Liu Y, Zhu TS, Xie X, Costello MA, Talsma CE, Flack CG, Crowley JG, Dimeco F, Vescovi AL, Fan X, Lubman DM. Glycoproteomic analysis of glioblastoma stem cell differentiation. J Proteome Res 2010; 10:330-8. [PMID: 21110520 DOI: 10.1021/pr101158p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cancer stem cells are responsible for tumor formation through self-renewal and differentiation into multiple cell types and thus represent a new therapeutic target for tumors. Glycoproteins play a critical role in determining the fates of stem cells such as self-renewal, proliferation, and differentiation. Here we applied a multilectin affinity chromatography and quantitative glycoproteomics approach to analyze alterations of glycoproteins relevant to the differentiation of a glioblastoma-derived stem cell line HSR-GBM1. Three lectins including concanavalin A (Con A), wheat germ agglutinin (WGA), and peanut agglutinin (PNA) were used to capture glycoproteins, followed by LC-MS/MS analysis. A total of 73 and 79 high-confidence (FDR < 0.01) glycoproteins were identified from the undifferentiated and differentiated cells, respectively. Label-free quantitation resulted in the discovery of 18 differentially expressed glycoproteins, wherein 9 proteins are localized in the lysosome. All of these lysosomal glycoproteins were up-regulated after differentiation, where their principal function was hydrolysis of glycosyl residues. Protein-protein interaction and functional analyses revealed the active involvement of lysosomes during the process of glioblastoma stem cell differentiation. This work provides glycoprotein markers to characterize differentiation status of glioblastoma stem cells that may be useful in stem-cell therapy of glioblastoma.
Collapse
Affiliation(s)
- Jintang He
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Taniguchi T, Kido S, Yamauchi E, Abe M, Matsumoto T, Taniguchi H. Induction of endosomal/lysosomal pathways in differentiating osteoblasts as revealed by combined proteomic and transcriptomic analyses. FEBS Lett 2010; 584:3969-74. [DOI: 10.1016/j.febslet.2010.07.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 07/21/2010] [Accepted: 07/27/2010] [Indexed: 11/16/2022]
|
23
|
Wang H, Mao Y, Zhang B, Wang T, Li F, Fu S, Xue Y, Yang T, Wen X, Ding Y, Duan X. Chloride channel ClC-3 promotion of osteogenic differentiation through Runx2. J Cell Biochem 2010; 111:49-58. [DOI: 10.1002/jcb.22658] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
24
|
Kim J, Xing W, Wergedal J, Chan JY, Mohan S. Targeted disruption of nuclear factor erythroid-derived 2-like 1 in osteoblasts reduces bone size and bone formation in mice. Physiol Genomics 2010; 40:100-10. [DOI: 10.1152/physiolgenomics.00105.2009] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Previous in vitro studies found that nuclear factor erythroid-derived 2-like 1 (NFE2L1) was involved in mediating ascorbic acid-induced osterix expression and osteoblast differentiation via binding to the antioxidant response element of the osterix promoter. To test the role of NFE2L1 in regulating bone formation in vivo, we disrupted NFE2L1 specifically in osteoblasts. Mice expressing Cre under the control of Col1α2 promoter were crossed with NFE2L1 loxP mice to generate Cre+ knockout (KO) and Cre− wild-type (WT) mice. Skeletal measurements by DEXA revealed 8–10% and 9–11% reduction in total body BMC and bone area in the KO mice from 3 to 8 wk of age. Peripheral quantitative computed tomography analyses found both periosteal and endosteal circumferences were reduced by 6% at the middiaphysis of the femurs from 8 wk old KO mice. Histomorphometric analyses revealed reduced bone formation was a cause for reduced bone size in the KO mice. Microcomputed tomography analysis of the metaphysis of the femur revealed that trabecular bone volume/total volume, and trabecular numbers were decreased by 30 and 53% in the NFE2L1 KO mice. Expression of osterix was decreased by 57% in the bones of NFE2L1 KO mice. In vitro nodule assay demonstrated that mineralized nodule area was reduced by 68% in the cultures of bone marrow stromal cells from NFE2L1 KO mice. Treatment of primary osteoblasts with ascorbic acid increased osterix expression by fourfold, whereas loss of NFE2L1 in osteoblasts diminished ascorbic acid stimulation of osterix expression by 50%. Our data provide the first in vivo experimental evidence that NFE2L1 produced by osteoblasts is involved in regulating osterix expression, osteoblast differentiation, and bone formation.
Collapse
Affiliation(s)
- Jonghyun Kim
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center
| | - Weirong Xing
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center
- Departments of 2Medicine,
| | - Jon Wergedal
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center
- Departments of 2Medicine,
- Biochemistry, and
| | - Jefferson Y. Chan
- Department of Pathology, University of California, Irvine, California
| | - Subburaman Mohan
- Musculoskeletal Disease Center, Jerry L. Pettis VA Medical Center
- Departments of 2Medicine,
- Biochemistry, and
- Physiology, Loma Linda University, Loma Linda; and
| |
Collapse
|
25
|
Strunnikova NV, Barb J, Sergeev YV, Thiagarajasubramanian A, Silvin C, Munson PJ, Macdonald IM. Loss-of-function mutations in Rab escort protein 1 (REP-1) affect intracellular transport in fibroblasts and monocytes of choroideremia patients. PLoS One 2009; 4:e8402. [PMID: 20027300 PMCID: PMC2793004 DOI: 10.1371/journal.pone.0008402] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Accepted: 11/15/2009] [Indexed: 11/25/2022] Open
Abstract
Background Choroideremia (CHM) is a progressive X-linked retinopathy caused by mutations in the CHM gene, which encodes Rab escort protein-1 (REP-1), an escort protein involved in the prenylation of Rabs. Under-prenylation of certain Rabs, as a result of loss of function mutations in REP-1, could affect vesicular trafficking, exocytosis and secretion in peripheral cells of CHM patients. Methodology/Principal Findings To evaluate this hypothesis, intracellular vesicle transport, lysosomal acidification and rates of proteolytic degradation were studied in monocytes (CD14+ fraction) and primary skin fibroblasts from the nine age-matched controls and thirteen CHM patients carrying 10 different loss-of-function mutations. With the use of pHrodo™ BioParticles® conjugated with E. coli, collagen I coated FluoSpheres beads and fluorescent DQ™ ovalbumin with BODYPY FL dye, we demonstrated for the first time that lysosomal pH was increased in monocytes of CHM patients and, as a consequence, the rates of proteolytic degradation were slowed. Microarray analysis of gene expression revealed that some genes involved in the immune response, small GTPase regulation, transcription, cell adhesion and the regulation of exocytosis were significantly up and down regulated in cells from CHM patients compared to controls. Finally, CHM fibroblasts secreted significantly lower levels of cytokine/growth factors such as macrophage chemoattractant protein-1 (MCP-1), pigment epithelial derived factor (PEDF), tumor necrosis factor (TNF) alpha, fibroblast growth factor (FGF) beta and interleukin (lL)-8. Conclusions/Significance We demonstrated for the first time that peripheral cells of CHM patients had increased pH levels in lysosomes, reduced rates of proteolytic degradation and altered secretion of cytokines. Peripheral cells from CHM patients expose characteristics that were not previously recognized and could used as an alternative models to study the effects of different mutations in the REP-1 gene on mechanism of CHM development in human population.
Collapse
Affiliation(s)
- Natalia V Strunnikova
- Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA.
| | | | | | | | | | | | | |
Collapse
|