1
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Yu D, Yin G, Lei J, Gong Y, Zheng L, He D, Lei L, Sun L. The correlation between serum levels of laminin, type IV collagen, type III procollagen N-terminal peptide and hyaluronic acid with the progression of post-COVID-19 pulmonary fibrosis. Front Cell Dev Biol 2024; 12:1382244. [PMID: 38979035 PMCID: PMC11228261 DOI: 10.3389/fcell.2024.1382244] [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: 02/05/2024] [Accepted: 05/30/2024] [Indexed: 07/10/2024] Open
Abstract
COVID-19 patients often suffer from post-COVID-19 acute sequelae (PASC). Pulmonary fibrosis has the most significant long-term impact on the respiratory health of patients, known as post-COVID-19 pulmonary fibrosis (PC19-PF). PC19-PF can be caused by acute respiratory distress syndrome (ARDS) or COVID-19-induced pneumonia. Individuals who experience COVID-19 pneumonia symptoms (including cough, shortness of breath, dyspnea on exertion, and desaturation) for at least 12 weeks after diagnosis, almost all develop PC19-PF. Extracellular matrix molecules: laminin (LN), type IV collagen (IV Col), procollagen III N-terminal peptide (PIIINP), and hyaluronic acid (HA) are involved in the development and progression of PC19-PF. This study aimed to investigate the relationship between the progression of PC19-PF and serum levels of laminin, IV COL, PIIINP, and hyaluronic acid. This retrospective study included 162 PC19-PF patients treated and 160 healthy controls who received treatment at Shenzhen Longgang District Third People's Hospital, Hebei PetroChina Central Hospital and Changzhi People's Hospital from January 2021 to December 2023. Serum levels of LN, IV COL, PIIINP, and HA were detected by chemiluminescence immunoassay using commercial kits. Predicted forced vital capacity percentage (FVC% pred), predicted carbon monoxide lung diffusion capacity percentage (DLCO% pred), high-resolution computed tomography (HRCT) scores were assessed, and patient mortality was compared with healthy controls. Serum levels of LN, IV Col, PIIINP, and HA were significantly higher in PC19-PF or CTD-ILD patients than in healthy controls (all p < 0.05), and they were further elevated in acute exacerbation cases (all p < 0.01). In patients, HA was positively associated with HRCT scores and negatively associated with FVC% pred and DLCO% pred (all p < 0.05). Serum levels of LN, IV COL, PIIINP, and HA were significantly lower in surviving patients than in those who deceased (all p > 0.05). Serum levels of LN, IV C, PIIINP, and HA may affect the progression of PC19-PF and may serve as indicators of PC19-PF severity.
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Affiliation(s)
- Dapeng Yu
- School of Basic Medical Sciences, Guangdong Medical University, Dongguan, China
| | - Guangyue Yin
- Department of Clinical Laboratory, Hebei Petro China Central Hospital, Langfang, China
| | - Jing Lei
- School of Medical Technology, Guangdong Medical University, Dongguan, China
| | - Yijun Gong
- Guangdong Provincial Engineering Technology Research Center for Autoimmune Laboratory Diagnostic Products, Shenzhen, China
| | - Liang Zheng
- Guangdong Provincial Engineering Technology Research Center for Autoimmune Laboratory Diagnostic Products, Shenzhen, China
| | - Dahui He
- Department of Clinical Laboratory, Shenzhen Longgang District Third People's Hospital, Shenzhen, China
| | - Lihua Lei
- Department of Clinical Laboratory, Huaiji County Traditional Chinese Medicine Hospital, Zhaoqing, China
| | - Lei Sun
- Department of Clinical Laboratory, Changzhi People's Hospital, Changzhi, China
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2
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Nizamoglu M, Koloko Ngassie ML, Meuleman RA, Banchero M, Borghuis T, Timens W, Nawijn MC, Melgert BN, Heijink IH, Brandsma CA, Burgess JK. Collagen type XIV is proportionally lower in the lung tissue of patients with IPF. Sci Rep 2023; 13:19393. [PMID: 37938243 PMCID: PMC10632429 DOI: 10.1038/s41598-023-46733-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/04/2023] [Indexed: 11/09/2023] Open
Abstract
Abnormal deposition of extracellular matrix (ECM) in lung tissue is a characteristic of idiopathic pulmonary fibrosis (IPF). Increased collagen deposition is also accompanied by altered collagen organization. Collagen type XIV, a fibril-associated collagen, supports collagen fibril organization. Its status in IPF has not been described at the protein level yet. In this study, we utilized publicly available datasets for single-cell RNA-sequencing for characterizing collagen type XIV expression at the gene level. For protein level comparison, we applied immunohistochemical staining for collagen type XIV on lung tissue sections from IPF patients and compared it to lung tissue sections from never smoking and ex-smoking donors. Analyzing the relative amounts of collagen type XIV at the whole tissue level, as well as in parenchyma, airway wall and bronchial epithelium, we found consistently lower proportions of collagen type XIV in all lung tissue compartments across IPF samples. Our study suggests proportionally lower collagen type XIV in IPF lung tissues may have implications for the assembly of the ECM fibers potentially contributing to progression of fibrosis.
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Affiliation(s)
- Mehmet Nizamoglu
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Maunick Lefin Koloko Ngassie
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Rhode A Meuleman
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Martin Banchero
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Theo Borghuis
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
| | - Wim Timens
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Martijn C Nawijn
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Barbro N Melgert
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Molecular Pharmacology, Groningen Research Institute for Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Irene H Heijink
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Pulmonology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Corry-Anke Brandsma
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Janette K Burgess
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1 [HPC EA11], 9713 GZ, Groningen, The Netherlands.
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
- W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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3
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Mavropalias G, Boppart M, Usher KM, Grounds MD, Nosaka K, Blazevich AJ. Exercise builds the scaffold of life: muscle extracellular matrix biomarker responses to physical activity, inactivity, and aging. Biol Rev Camb Philos Soc 2023; 98:481-519. [PMID: 36412213 DOI: 10.1111/brv.12916] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/23/2022]
Abstract
Skeletal muscle extracellular matrix (ECM) is critical for muscle force production and the regulation of important physiological processes during growth, regeneration, and remodelling. ECM remodelling is a tightly orchestrated process, sensitive to multi-directional tensile and compressive stresses and damaging stimuli, and its assessment can convey important information on rehabilitation effectiveness, injury, and disease. Despite its profound importance, ECM biomarkers are underused in studies examining the effects of exercise, disuse, or aging on muscle function, growth, and structure. This review examines patterns of short- and long-term changes in the synthesis and concentrations of ECM markers in biofluids and tissues, which may be useful for describing the time course of ECM remodelling following physical activity and disuse. Forces imposed on the ECM during physical activity critically affect cell signalling while disuse causes non-optimal adaptations, including connective tissue proliferation. The goal of this review is to inform researchers, and rehabilitation, medical, and exercise practitioners better about the role of ECM biomarkers in research and clinical environments to accelerate the development of targeted physical activity treatments, improve ECM status assessment, and enhance function in aging, injury, and disease.
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Affiliation(s)
- Georgios Mavropalias
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
- Centre for Molecular Medicine and Innovative Therapeutics, and Centre for Healthy Aging, Health Futures Institute, Murdoch University, Murdoch, WA, 6150, Australia
- Discipline of Exercise Science, Murdoch University, Murdoch, WA, 6150, Australia
| | - Marni Boppart
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, 1206 South Fourth St, Urbana, IL, 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana- Champaign, 405 N. Mathews Avenue, Urbana, IL, 61801, USA
| | - Kayley M Usher
- School of Biomedical Sciences, University of Western Australia (M504), 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Miranda D Grounds
- School of Human Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Kazunori Nosaka
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
| | - Anthony J Blazevich
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
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4
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Willows JW, Robinson M, Alshahal Z, Morrison SK, Mishra G, Cyr H, Blaszkiewicz M, Gunsch G, DiPietro S, Paradie E, Tero B, Harrington A, Ryzhova L, Liaw L, Reifsnyder PC, Harrison DE, Townsend KL. Age-related changes to adipose tissue and peripheral neuropathy in genetically diverse HET3 mice differ by sex and are not mitigated by rapamycin longevity treatment. Aging Cell 2023; 22:e13784. [PMID: 36798047 PMCID: PMC10086534 DOI: 10.1111/acel.13784] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 12/16/2022] [Accepted: 01/05/2023] [Indexed: 02/18/2023] Open
Abstract
Neural communication between the brain and adipose tissues regulates energy expenditure and metabolism through modulation of adipose tissue functions. We have recently demonstrated that under pathophysiological conditions (obesity, diabetes, and aging), total subcutaneous white adipose tissue (scWAT) innervation is decreased ('adipose neuropathy'). With advanced age in the C57BL/6J mouse, small fiber peripheral nerve endings in adipose tissue die back, resulting in reduced contact with adipose-resident blood vessels and other cells. This vascular neuropathy and parenchymal neuropathy together likely pose a physiological challenge for tissue function. In the current work, we used the genetically diverse HET3 mouse model to investigate the incidence of peripheral neuropathy and adipose tissue dysregulation across several ages in both male and female mice. We also investigated the anti-aging treatment rapamycin, an mTOR inhibitor, as a means to prevent or reduce adipose neuropathy. We found that HET3 mice displayed a reduced neuropathy phenotype compared to inbred C56BL/6 J mice, indicating genetic contributions to this aging phenotype. Compared to female HET3 mice, male HET3 mice had worse neuropathic phenotypes by 62 weeks of age. Female HET3 mice appeared to have increased protection from neuropathy until advanced age (126 weeks), after reproductive senescence. We found that rapamycin overall had little impact on neuropathy measures, and actually worsened adipose tissue inflammation and fibrosis. Despite its success as a longevity treatment in mice, higher doses and longer delivery paradigms for rapamycin may lead to a disconnect between life span and beneficial health outcomes.
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Affiliation(s)
- Jake W Willows
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | | | - Zahra Alshahal
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Samantha K Morrison
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Gargi Mishra
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | | | - Magdalena Blaszkiewicz
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Gilian Gunsch
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Sabrina DiPietro
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Emma Paradie
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Benjamin Tero
- Maine Medical Center Research Institute, Scarborough, Maine, USA
| | - Anne Harrington
- Maine Medical Center Research Institute, Scarborough, Maine, USA
| | - Larisa Ryzhova
- Maine Medical Center Research Institute, Scarborough, Maine, USA
| | - Lucy Liaw
- Maine Medical Center Research Institute, Scarborough, Maine, USA
| | | | | | - Kristy L Townsend
- Department of Neurological Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA.,University of Maine, Orono, Maine, USA
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5
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Nangia-Makker P, Hogan V, Balan V, Raz A. Chimeric galectin-3 and collagens: Biomarkers and potential therapeutic targets in fibroproliferative diseases. J Biol Chem 2022; 298:102622. [PMID: 36272642 PMCID: PMC9706532 DOI: 10.1016/j.jbc.2022.102622] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 11/27/2022] Open
Abstract
Fibrosis, stiffening and scarring of an organ/tissue due to genetic abnormalities, environmental factors, infection, and/or injury, is responsible for > 40% of all deaths in the industrialized world, and to date, there is no cure for it despite extensive research and numerous clinical trials. Several biomarkers have been identified, but no effective therapeutic targets are available. Human galectin-3 is a chimeric gene product formed by the fusion of the internal domain of the collagen alpha gene [N-terminal domain (ND)] at the 5'-end of galectin-1 [C-terminal domain (CRD)] that appeared during evolution together with vertebrates. Due to the overlapping structural similarities between collagen and galectin-3 and their shared susceptibility to cleavage by matrix metalloproteases to generate circulating collagen-like peptides, this review will discuss present knowledge on the role of collagen and galectin-3 as biomarkers of fibrosis. We will also highlight the need for transformative approaches targeting both the ND and CRD domains of galectin-3, since glycoconjugate binding by the CRD is triggered by ND-mediated oligomerization and the therapies targeted only at the CRD have so far achieved limited success.
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Affiliation(s)
- Pratima Nangia-Makker
- Barbara Ann Karmanos Cancer Institute, Department of Oncology, School of Medicine, Redwood City, California, USA,For correspondence: Pratima Nangia-Makker; Avraham Raz
| | - Victor Hogan
- Barbara Ann Karmanos Cancer Institute, Department of Oncology, School of Medicine, Redwood City, California, USA
| | - Vitaly Balan
- Guardant Health, Bioinformatics, Redwood City, California, USA
| | - Avraham Raz
- Barbara Ann Karmanos Cancer Institute, Department of Oncology, School of Medicine, Redwood City, California, USA,Department of Pathology, School of Medicine, Wayne State University, Detroit, Michigan, USA,For correspondence: Pratima Nangia-Makker; Avraham Raz
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6
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Pach E, Kümper M, Fromme JE, Zamek J, Metzen F, Koch M, Mauch C, Zigrino P. Extracellular Matrix Remodeling by Fibroblast-MMP14 Regulates Melanoma Growth. Int J Mol Sci 2021; 22:12276. [PMID: 34830157 PMCID: PMC8625044 DOI: 10.3390/ijms222212276] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/04/2021] [Accepted: 11/11/2021] [Indexed: 12/20/2022] Open
Abstract
Maintaining a balanced state in remodeling the extracellular matrix is crucial for tissue homeostasis, and this process is altered during skin cancer progression. In melanoma, several proteolytic enzymes are expressed in a time and compartmentalized manner to support tumor progression by generating a permissive environment. One of these proteases is the matrix metalloproteinase 14 (MMP14). We could previously show that deletion of MMP14 in dermal fibroblasts results in the generation of a fibrotic-like skin in which melanoma growth is impaired. That was primarily due to collagen I accumulation due to lack of the collagenolytic activity of MMP14. However, as well as collagen I processing, MMP14 can also process several extracellular matrices. We investigated extracellular matrix alterations occurring in the MMP14-deleted fibroblasts that can contribute to the modulation of melanoma growth. The matrix deposited by cultured MMP14-deleted fibroblast displayed an antiproliferative and anti-migratory effect on melanoma cells in vitro. Analysis of the secreted and deposited-decellularized fibroblast's matrix identified a few altered proteins, among which the most significantly changed was collagen XIV. This collagen was increased because of post-translational events, while de novo synthesis was unchanged. Collagen XIV as a substrate was not pro-proliferative, pro-migratory, or adhesive, suggesting a negative regulatory role on melanoma cells. Consistent with that, increasing collagen XIV concentration in wild-type fibroblast-matrix led to reduced melanoma proliferation, migration, and adhesion. In support of its anti-tumor activity, enhanced accumulation of collagen XIV was detected in peritumoral areas of melanoma grown in mice with the fibroblast's deletion of MMP14. In advanced human melanoma samples, we detected reduced expression of collagen XIV compared to benign nevi, which showed a robust expression of this molecule around melanocytic nests. This study shows that loss of fibroblast-MMP14 affects melanoma growth through altering the peritumoral extracellular matrix (ECM) composition, with collagen XIV being a modulator of melanoma progression and a new proteolytic substrate to MMP14.
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Affiliation(s)
- Elke Pach
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
| | - Maike Kümper
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
| | - Julia E. Fromme
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
- Mildred Scheel School of Oncology Aachen Bonn Cologne Düsseldorf (MSSO ABCD), 50937 Cologne, Germany
| | - Jan Zamek
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
| | - Fabian Metzen
- Faculty of Medicine and University Hospital, Institute for Dental Research and Oral Musculoskeletal Biology and Center for Biochemistry, University of Cologne, 50937 Cologne, Germany; (F.M.); (M.K.)
| | - Manuel Koch
- Faculty of Medicine and University Hospital, Institute for Dental Research and Oral Musculoskeletal Biology and Center for Biochemistry, University of Cologne, 50937 Cologne, Germany; (F.M.); (M.K.)
| | - Cornelia Mauch
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
| | - Paola Zigrino
- Department of Dermatology and Venereology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; (E.P.); (M.K.); (J.E.F.); (J.Z.); (C.M.)
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7
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Akinbote A, Beltran-Sastre V, Cherubini M, Visone R, Hajal C, Cobanoglu D, Haase K. Classical and Non-classical Fibrosis Phenotypes Are Revealed by Lung and Cardiac Like Microvascular Tissues On-Chip. Front Physiol 2021; 12:735915. [PMID: 34690810 PMCID: PMC8528192 DOI: 10.3389/fphys.2021.735915] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 08/31/2021] [Indexed: 11/13/2022] Open
Abstract
Fibrosis, a hallmark of many cardiac and pulmonary diseases, is characterized by excess deposition of extracellular matrix proteins and increased tissue stiffness. This serious pathologic condition is thought to stem majorly from local stromal cell activation. Most studies have focused on the role of fibroblasts; however, the endothelium has been implicated in fibrosis through direct and indirect contributions. Here, we present a 3D vascular model to investigate vessel-stroma crosstalk in normal conditions and following induced fibrosis. Human-induced pluripotent stem cell-derived endothelial cells (hiPSC-ECs) are co-cultured with (and without) primary human cardiac and lung fibroblasts (LFs) in a microfluidic device to generate perfusable microvasculature in cardiac- and pulmonary-like microenvironments. Endothelial barrier function, vascular morphology, and matrix properties (stiffness and diffusivity) are differentially impacted by the presence of stromal cells. These vessels (with and without stromal cells) express inflammatory cytokines, which could induce a wound-healing state. Further treatment with transforming growth factor-β (TGF-β) induced varied fibrotic phenotypes on-chip, with LFs resulting in increased stiffness, lower MMP activity, and increased smooth muscle actin expression. Taken together, our work demonstrates the strong impact of stromal-endothelial interactions on vessel formation and extravascular matrix regulation. The role of TGF-β is shown to affect co-cultured microvessels differentially and has a severe negative impact on the endothelium without stromal cell support. Our human 3D in vitro model has the potential to examine anti-fibrotic therapies on patient-specific hiPSCs in the future.
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Affiliation(s)
- Akinola Akinbote
- European Molecular Biology Laboratory, Barcelona, Spain.,Heidelberg University, Faculty of Biosciences, Heidelberg, Germany
| | | | | | - Roberta Visone
- Politecnico di Milano, Department of Electronics, Information, and Bioengineering, Milan Italy.,Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, MA, United States
| | - Cynthia Hajal
- Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, MA, United States
| | - Defne Cobanoglu
- European Molecular Biology Laboratory, Barcelona, Spain.,Heidelberg University, Faculty of Biosciences, Heidelberg, Germany
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8
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Xu Q, Torres JE, Hakim M, Babiak PM, Pal P, Battistoni CM, Nguyen M, Panitch A, Solorio L, Liu JC. Collagen- and hyaluronic acid-based hydrogels and their biomedical applications. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2021; 146:100641. [PMID: 34483486 PMCID: PMC8409465 DOI: 10.1016/j.mser.2021.100641] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hydrogels have been widely investigated in biomedical fields due to their similar physical and biochemical properties to the extracellular matrix (ECM). Collagen and hyaluronic acid (HA) are the main components of the ECM in many tissues. As a result, hydrogels prepared from collagen and HA hold inherent advantages in mimicking the structure and function of the native ECM. Numerous studies have focused on the development of collagen and HA hydrogels and their biomedical applications. In this extensive review, we provide a summary and analysis of the sources, features, and modifications of collagen and HA. Specifically, we highlight the fabrication, properties, and potential biomedical applications as well as promising commercialization of hydrogels based on these two natural polymers.
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Affiliation(s)
- Qinghua Xu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jessica E. Torres
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Mazin Hakim
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Paulina M Babiak
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Pallabi Pal
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Carly M Battistoni
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Michael Nguyen
- Department of Biomedical Engineering, University of California Davis, Davis, California 95616, United States
| | - Alyssa Panitch
- Department of Biomedical Engineering, University of California Davis, Davis, California 95616, United States
| | - Luis Solorio
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Julie C. Liu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
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9
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Glisinski KM, Schlobohm AJ, Paramore SV, Birukova A, Moseley MA, Foster MW, Barkauskas CE. Interleukin-13 disrupts type 2 pneumocyte stem cell activity. JCI Insight 2020; 5:131232. [PMID: 31941839 DOI: 10.1172/jci.insight.131232] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 12/04/2019] [Indexed: 12/28/2022] Open
Abstract
The T helper 2 (Th2) inflammatory cytokine interleukin-13 (IL-13) has been associated with both obstructive and fibrotic lung diseases; however, its specific effect on the epithelial stem cells in the gas exchange compartment of the lung (alveolar space) has not been explored. Here, we used in vivo lung models of homeostasis and repair, ex vivo organoid platforms, and potentially novel quantitative proteomic techniques to show that IL-13 disrupts the self-renewal and differentiation of both murine and human type 2 alveolar epithelial cells (AEC2s). Significantly, we find that IL-13 promotes ectopic expression of markers typically associated with bronchiolar airway cells and commonly seen in the alveolar region of lung tissue from patients with idiopathic pulmonary fibrosis. Furthermore, we identify a number of proteins that are differentially secreted by AEC2s in response to IL-13 and may provide biomarkers to identify subsets of patients with pulmonary disease driven by "Th2-high" biology.
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Affiliation(s)
- Kristen M Glisinski
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, and
| | - Adam J Schlobohm
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, and
| | - Sarah V Paramore
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, and
| | - Anastasiya Birukova
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, and
| | - M Arthur Moseley
- Duke Proteomics and Metabolomics Shared Resource, Duke University Medical Center, Durham, North Carolina, USA
| | - Matthew W Foster
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, and.,Duke Proteomics and Metabolomics Shared Resource, Duke University Medical Center, Durham, North Carolina, USA
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10
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Quantitative proteomic profiling of extracellular matrix and site-specific collagen post-translational modifications in an in vitro model of lung fibrosis. Matrix Biol Plus 2019; 1:100005. [PMID: 33543004 PMCID: PMC7852317 DOI: 10.1016/j.mbplus.2019.04.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 12/21/2022] Open
Abstract
Lung fibrosis is characterized by excessive deposition of extracellular matrix (ECM), in particular collagens, by fibroblasts in the interstitium. Transforming growth factor-β1 (TGF-β1) alters the expression of many extracellular matrix (ECM) components produced by fibroblasts, but such changes in ECM composition as well as modulation of collagen post-translational modification (PTM) levels have not been comprehensively investigated. Here, we performed mass spectrometry (MS)-based proteomics analyses to assess changes in the ECM deposited by cultured lung fibroblasts from idiopathic pulmonary fibrosis (IPF) patients upon stimulation with transforming growth factor β1 (TGF-β1). In addition to the ECM changes commonly associated with lung fibrosis, MS-based label-free quantification revealed profound effects on enzymes involved in ECM crosslinking and turnover as well as multiple positive and negative feedback mechanisms of TGF-β1 signaling. Notably, the ECM changes observed in this in vitro model correlated significantly with ECM changes observed in patient samples. Because collagens are subject to multiple PTMs with major implications in disease, we implemented a new bioinformatic platform to analyze MS data that allows for the comprehensive mapping and site-specific quantitation of collagen PTMs in crude ECM preparations. These analyses yielded a comprehensive map of prolyl and lysyl hydroxylations as well as lysyl glycosylations for 15 collagen chains. In addition, site-specific PTM analysis revealed novel sites of prolyl-3-hydroxylation and lysyl glycosylation in type I collagen. Interestingly, the results show, for the first time, that TGF-β1 can modulate prolyl-3-hydroxylation and glycosylation in a site-specific manner. Taken together, this proof of concept study not only reveals unanticipated TGF-β1 mediated regulation of collagen PTMs and other ECM components but also lays the foundation for dissecting their key roles in health and disease. The proteomic data has been deposited to the ProteomeXchange Consortium via the MassIVE partner repository with the data set identifier MSV000082958. Quantitative proteomics of TGF-β-induced changes in ECM composition and collagen PTM in pulmonary fibroblasts TGF-β promotes crosslinking and turnover as well as complex feedback mechanisms that alter fibroblast ECM homeostasis. A novel bioinformatic workflow for MS data analysis enabled global mapping and quantitation of known and novel collagen PTMs Quantitative assessment of prolyl-3-hydroxylation site occupancy and lysine-O-glycosylation microheterogeneity TGF-β1 modulates collagen PTMs in a site-specific manner that may favor collagen accumulation in lung fibrosis
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Key Words
- 3-HyP, 3-hydroxyproline
- 4-HyP, 4-hydroxyproline
- AGC, automatic gain control
- ANXA11, annexin A11
- BGN, biglycan
- COL1A1, collagen-I alpha 1 chain
- Collagen
- Collagen post-translational modifications
- DCN, decorin
- ECM, extracellular matrix
- Extracellular matrix
- FN1, fibronectin 1
- G-HyK, galactosylhydroxylysine
- GG-HyK, glucosylgalactosylhydroxylysine
- HyK, hydroxylysine
- HyP, hydroxyproline
- ILD, interstitial lung disease
- IPF, idiopathic pulmonary fibrosis
- LH, lysyl hydroxylase
- LOX(L), lysyl oxidase(-like)
- LTBP2, latent-transforming growth factor β -binding protein 2
- Lysyl glycosylation
- Lysyl hydroxylation
- P3H, prolyl-3-hydroxylase
- P4H, prolyl-4-hydroxylase
- PAI1, plasminogen activator inhibitor 1
- PCA, principal component analysis
- PLOD (LH), procollagen-lysine,2-oxoglutarate 5-dioxygenases (lysyl hydroxylases)
- PTM, post-translational modification
- Prolyl hydroxylation
- Pulmonary fibrosis
- SEMA7A, semaphorin 7a
- TGF-β, transforming growth factor β
- TGM2, transglutaminase 1
- Transforming growth factor-β
- VCAN, versican
- Xaa, Xaa position in the Gly-Xaa-Yaa repeat in triple-helical collagen
- Yaa, Yaa position in the Gly-Xaa-Yaa repeat in triple-helical collagen
- α-SMA, α-smooth muscle actin
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11
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Murtha LA, Schuliga MJ, Mabotuwana NS, Hardy SA, Waters DW, Burgess JK, Knight DA, Boyle AJ. The Processes and Mechanisms of Cardiac and Pulmonary Fibrosis. Front Physiol 2017; 8:777. [PMID: 29075197 PMCID: PMC5643461 DOI: 10.3389/fphys.2017.00777] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 09/22/2017] [Indexed: 02/06/2023] Open
Abstract
Fibrosis is the formation of fibrous connective tissue in response to injury. It is characterized by the accumulation of extracellular matrix components, particularly collagen, at the site of injury. Fibrosis is an adaptive response that is a vital component of wound healing and tissue repair. However, its continued activation is highly detrimental and a common final pathway of numerous disease states including cardiovascular and respiratory disease. Worldwide, fibrotic diseases cause over 800,000 deaths per year, accounting for ~45% of total deaths. With an aging population, the incidence of fibrotic disease and subsequently the number of fibrosis-related deaths will rise further. Although, fibrosis is a well-recognized cause of morbidity and mortality in a range of disease states, there are currently no viable therapies to reverse the effects of chronic fibrosis. Numerous predisposing factors contribute to the development of fibrosis. Biological aging in particular, interferes with repair of damaged tissue, accelerating the transition to pathological remodeling, rather than a process of resolution and regeneration. When fibrosis progresses in an uncontrolled manner, it results in the irreversible stiffening of the affected tissue, which can lead to organ malfunction and death. Further investigation into the mechanisms of fibrosis is necessary to elucidate novel, much needed, therapeutic targets. Fibrosis of the heart and lung make up a significant proportion of fibrosis-related deaths. It has long been established that the heart and lung are functionally and geographically linked when it comes to health and disease, and thus exploring the processes and mechanisms that contribute to fibrosis of each organ, the focus of this review, may help to highlight potential avenues of therapeutic investigation.
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Affiliation(s)
- Lucy A Murtha
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Michael J Schuliga
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Nishani S Mabotuwana
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Sean A Hardy
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - David W Waters
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Janette K Burgess
- Department of Pathology and Medical Biology, Groningen Research Institute for Asthma and COPD, W. J. Kolff Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.,Respiratory Cellular and Molecular Biology Group, Woolcock Institute of Medical Research, Glebe, NSW, Australia.,Discipline of Pharmacology, University of Sydney, Sydney, NSW, Australia
| | - Darryl A Knight
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia.,Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BS, Canada.,Department of Medicine, University of Western Australia, Perth, WA, Australia.,Research and Innovation Conjoint, Hunter New England Health, Newcastle, NSW, Australia
| | - Andrew J Boyle
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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12
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Su Y, Gu H, Weng D, Zhou Y, Li Q, Zhang F, Zhang Y, Shen L, Hu Y, Li H. Association of serum levels of laminin, type IV collagen, procollagen III N-terminal peptide, and hyaluronic acid with the progression of interstitial lung disease. Medicine (Baltimore) 2017; 96:e6617. [PMID: 28471958 PMCID: PMC5419904 DOI: 10.1097/md.0000000000006617] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Noninvasive and convenient tests to assess pulmonary fibrosis and disease progression in interstitial lung diseases (ILDs) are currently unavailable. The extracellular matrix molecules, laminin (LN), type IV collagen (IVC), procollagen III N-terminal peptide (PIIINP), and hyaluronic acid (HA) are involved in ILD development and progression. This study aims to investigate the association of disease progression and serum levels of LN, IVC, PIIINP, and HA in patients with ILD. This retrospective study included 323 patients (162 cases of idiopathic pulmonary fibrosis [IPF] and 161 cases of connective tissue diseases ILD [CTD-ILD]) treated in Shanghai Pulmonary Hospital between January 2013 and January 2015 and 160 healthy controls. Serum LN, IVC, PIIINP, and HA were analyzed by radioimmunoassay. Data of the percentage of forced vital capacity in the prediction value (FVC%pred), the percentage of diffusing capacity of the lung for carbon monoxide in the prediction value (DLCO%pred), high resolution computed tomography (HRCT) score, and patient mortality were collected. Serum LN, IVC, PIIINP, and HA were significantly increased in the patients with IPF or CTD-ILD compared with the healthy controls (all P < .05) and were further elevated in the acute exacerbation cases (all P < .05). Serum LN, IVC, PIIINP, and HA positively correlated with HRCT score and negatively correlated with FVC%pred and DLCO%pred significantly in the patients (all P < .05). The survived patients had significantly lower serum LN, IVC, PIIINP, and HA than the dead patients (all P < .05). Serum levels of LN, IVC, PIIINP, and HA may reflect ILD progression and may be indicators for the severity of ILDs.
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Affiliation(s)
- Yiliang Su
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Hongyan Gu
- Department of Respiratory Medicine, Nantong Sixth People's Hospital, Nantong, China
| | - Dong Weng
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Ying Zhou
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Qiuhong Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Fen Zhang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Yuan Zhang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Li Shen
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Yang Hu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
| | - Huiping Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai
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13
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Karagiannis GS, Poutahidis T, Erdman SE, Kirsch R, Riddell RH, Diamandis EP. Cancer-associated fibroblasts drive the progression of metastasis through both paracrine and mechanical pressure on cancer tissue. Mol Cancer Res 2012; 10:1403-18. [PMID: 23024188 DOI: 10.1158/1541-7786.mcr-12-0307] [Citation(s) in RCA: 401] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Neoplastic cells recruit fibroblasts through various growth factors and cytokines. These "cancer-associated fibroblasts" (CAF) actively interact with neoplastic cells and form a myofibroblastic microenvironment that promotes cancer growth and survival and supports malignancy. Several products of their paracrine signaling repertoire have been recognized as tumor growth and metastasis regulators. However, tumor-promoting cell signaling is not the only reason that makes CAFs key components of the "tumor microenvironment," as CAFs affect both the architecture and growth mechanics of the developing tumor. CAFs participate in the remodeling of peritumoral stroma, which is a prerequisite of neoplastic cell invasion, expansion, and metastasis. CAFs are not present peritumorally as individual cells but they act orchestrated to fully deploy a desmoplastic program, characterized by "syncytial" (or collective) configuration and altered cell adhesion properties. Such myofibroblastic cohorts are reminiscent of those encountered in wound-healing processes. The view of "cancer as a wound that does not heal" led to useful comparisons between wound healing and tumorigenesis and expanded our knowledge of the role of CAF cohorts in cancer. In this integrative model of cancer invasion and metastasis, we propose that the CAF-supported microenvironment has a dual tumor-promoting role. Not only does it provide essential signals for cancer cell dedifferentiation, proliferation, and survival but it also facilitates cancer cell local invasion and metastatic phenomena.
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Affiliation(s)
- George S Karagiannis
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Canada
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14
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Proteomic signatures of the desmoplastic invasion front reveal collagen type XII as a marker of myofibroblastic differentiation during colorectal cancer metastasis. Oncotarget 2012; 3:267-85. [PMID: 22408128 PMCID: PMC3359884 DOI: 10.18632/oncotarget.451] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Cancer-associated fibroblasts (CAFs), represent a pivotal compartment of solid cancers (desmoplasia), and are causatively implicated in cancer development and progression. CAFs are recruited by growth factors secreted by cancer cells and they present a myofibroblastic phenotype, similar to the one obtained by resident fibroblasts during wound healing. Paracrine signaling between cancer cells and CAFs results in a unique protein expression profile in areas of desmoplastic reaction, which is speculated to drive metastasis. In an attempt to decipher large-scale proteomic profiles of the cancer invasive margins, we developed an in vitro coculture model system, based on tumor-host cell interactions between colon cancer cells and CAFs. Proteomic analysis of conditioned media derived from these cocultures coupled to mass spectrometry and bioinformatic analysis was performed to uncover myofibroblastic signatures of the cancer invasion front. Our analysis resulted in the identification and generation of a desmoplastic protein dataset (DPD), consisting of 152 candidate proteins of desmoplasia. By using monoculture exclusion datasets, a secretome algorithm and gene-expression meta-analysis in DPD, we specified a 22-protein “myofibroblastic signature” with putative importance in the regulation of colorectal cancer metastasis. Of these proteins, we investigated collagen type XII by immunohistochemistry, a fibril-associated collagen with interrupted triple helices (FACIT), whose expression has not been reported in desmoplastic lesions in any type of cancer. Collagen type XII was highly expressed in desmoplastic stroma by and around alpha-smooth muscle actin (α-SMA) positive CAFs, as well as in cancer cells lining the invasion front, in a small cohort of colon cancer patients. Other stromal markers, such as collagen type III, were also expressed in stromal collagen, but not in cancer cells. In a complementary fashion, gene expression meta-analysis revealed that COL12A1 is also an upregulated gene in colorectal cancer. Our proteomic analysis identified previously documented markers of tumor invasion fronts and our DPD could serve as a pool for future investigation of the tumor microenvironment. Collagen type XII is a novel candidate marker of myofibroblasts, and/or cancer cells undergoing dedifferentiation.
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15
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Mollenhauer MAM, Carter BJ, Peden-Adams MM, Bossart GD, Fair PA. Gene expression changes in bottlenose dolphin, Tursiops truncatus, skin cells following exposure to methylmercury (MeHg) or perfluorooctane sulfonate (PFOS). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2009; 91:10-18. [PMID: 19010555 DOI: 10.1016/j.aquatox.2008.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Revised: 09/20/2008] [Accepted: 09/23/2008] [Indexed: 05/27/2023]
Abstract
Methylmercury (MeHg) and perfluorooctane sulfonate (PFOS) bioaccumulate and biomagnify in the environment and increasing concentrations of these pollutants have been found in wildlife and humans. Both chemicals are worldwide contaminants with wide ranging biological effects and have been identified in relatively high concentrations in apex level marine mammals such as bottlenose dolphins. The primary objective of this study was to determine if exposure to MeHg or PFOS would alter the gene expression in primary bottlenose dolphin epidermal cell cultures. Primary skin cells were isolated and cultured from skin samples collected from wild bottlenose dolphins. The cells were subsequently exposed to 13ppm PFOS or 1ppm MeHg and changes in gene expression were analyzed by suppressive subtractive hybridization (SSH) and quantitative real-time PCR (QPCR). 116 genes were positively identified in the dolphin skin cells by SSH. Of these, 16 total genes were analyzed by QPCR (9 and 11 genes following PFOS or MeHg exposure, respectively, with four overlapping genes). Results indicate MeHg significantly alters gene expression patterns following 24h exposure, but has no measurable effect after only 1h. PFOS exposure, however, caused significant alterations following both 1 and 25h. Overall, the changes in gene expression observed indicate these concentrations of MeHg and PFOS significantly alter normal gene expression patterns. The changes in gene expression following exposure to these contaminants not only indicate a cellular stress response, but also decreased cell cycle progression and cellular proliferation and reduced protein translation. Alterations in normal cellular biology, like those observed, may lead to changes in health in marine mammals exposed to contaminants; however, this warrants further investigation.
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16
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Antoniou KM, Tzanakis N, Tzortzaki EG, Malagari K, Koutsopoulos AV, Alexandrakis M, Wells AU, Siafakas NM. Different angiogenic CXC chemokine levels in bronchoalveolar lavage fluid after interferon gamma-1b therapy in idiopathic pulmonary fibrosis patients. Pulm Pharmacol Ther 2008; 21:840-4. [PMID: 18644457 DOI: 10.1016/j.pupt.2008.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2007] [Revised: 06/24/2008] [Accepted: 06/30/2008] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIM Pulmonary fibrosis is a devastating disease with few treatment options. Angiogenesis that leads to aberrant vascular remodeling is regulated by an opposing balance of angiogenic and angiostatic factors. The present study aims to evaluate the role of three angiogenic (IL-8, ENA-78 and GRO-a) and three angiostatic (MIG, IP-10, ITAC) chemokines in bronchoalveolar lavage fluid (BALF), before and after treatment with Interferon gamma-1b (IFN gamma-1b). PATIENTS AND METHODS We studied prospectively 20 patients (16 males, 4 females) of median age 68 years (range, 40-75) with histologically confirmed IPF/UIP. Patients were assigned to receive IFN gamma-1b 200 microg sc thrice a week. Angiogenic and angiostatic mediators' levels were measured by ELISA kits. RESULTS The levels of the angiogenic chemokines significantly decreased after 12 months (mo) of IFN-gamma-1b treatment (median values in pg/ml, IL-8/CXCL8: 640 vs. 81, p<0.05, ENA-78/CXCL5: 191 vs. 51, p<0.005 and GRO-alpha: 1827 vs. 710, p<0.005). No significant differences were detected in the levels of the angiostatic chemokines after therapy (median values in pg/ml, IP-10/CXCL10: 56 vs. 56.5, p=0.6, ITAC/CXCL11: 43 vs. 47, p=0.11). However, a significant decrease in the MIG/CXCL9: 66 vs. 31, p=0.006, has been detected. CONCLUSION These findings support the notion that IFN gamma may be one of the important mediators regulating angiogenetic balance in IPF. However, IFN gamma-1b decreases MIG levels, finding that in association with no alteration in IP-10 and I-TAC levels, could explain in part the nonbeneficial effect of this drug in IPF.
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Affiliation(s)
- Katerina M Antoniou
- Department of Thoracic Medicine, University General Hospital, Medical School, University of Crete, Heraklion, 71110 Crete, Greece
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