2
|
Zhao X, Psarianos P, Ghoraie LS, Yip K, Goldstein D, Gilbert R, Witterick I, Pang H, Hussain A, Lee JH, Williams J, Bratman SV, Ailles L, Haibe-Kains B, Liu FF. Metabolic regulation of dermal fibroblasts contributes to skin extracellular matrix homeostasis and fibrosis. Nat Metab 2019; 1:147-157. [PMID: 32694814 DOI: 10.1038/s42255-018-0008-5] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/29/2018] [Indexed: 12/31/2022]
Abstract
Extracellular matrix (ECM) homeostasis is essential for normal tissue function, and its disruption by iatrogenic injury, trauma, or disease results in fibrosis. Skin ECM homeostasis is maintained by a complex process that involves an integration of cytokine and environmental mediators. However, it is unclear, in both normal and disease states, how these multifactorial processes converge to shift ECM homeostasis towards accumulation or degradation. Here we show a consistent downregulation in fatty acid oxidation (FAO) and upregulation of glycolysis in fibrotic skin and in normal skin with abundant ECM. Perturbation of glycolysis and FAO pathway enzymes reveals their reciprocal effects in ECM upregulation and downregulation, respectively. Increasing peroxisome proliferator-activated receptor (PPAR) signalling, an inducer of the FAO pathway, generates a catabolic fibroblast phenotype characterised by inhibition of ECM transcription and enhanced ECM internalization and lysosomal degradation. In contrast, suppression of glycolysis inhibits ECM gene transcription and protein levels, independently of an intact FAO pathway or PPAR signalling. Moreover, we show that CD36, a multifunctional fatty acid transporter, connects the metabolic state of fibroblasts with their capacity for ECM regulation, as internalization and degradation of collagen-1 is abrogated in fibroblasts lacking CD36. Finally, restoring FAO and upregulating CD36 reduces ECM accumulation in murine skin fibrosis. These findings indicate that metabolic perturbation of ECM homeostasis may have broad implications for therapies aimed at ECM regulation, such as fibrosis, regenerative medicine, and ageing.
Collapse
Affiliation(s)
- Xiao Zhao
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada.
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.
- Insitute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.
| | - Pamela Psarianos
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Laleh Soltan Ghoraie
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Kenneth Yip
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - David Goldstein
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
- Department of Otolaryngology-Head and Neck Surgery and Surgical Oncology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Ralph Gilbert
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
- Department of Otolaryngology-Head and Neck Surgery and Surgical Oncology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Ian Witterick
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
- Department of Otolaryngology-Head and Neck Surgery and Surgical Oncology, University Health Network, University of Toronto, Toronto, Ontario, Canada
- Department of Otolaryngology-Head and Neck Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Hilary Pang
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Ali Hussain
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Ju Hee Lee
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Justin Williams
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Scott V Bratman
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Laurie Ailles
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Benjamin Haibe-Kains
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- Insitute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
- Department of Computer Science, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Fei-Fei Liu
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada.
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|
3
|
Grozdic Milojevic IT, Milojevic B, Sobic-Saranovic DP, Artiko VM. Impact of hybrid molecular imaging in retroperitoneal fibrosis: a systematic review. Rheumatol Int 2017; 38:179-187. [PMID: 28840309 DOI: 10.1007/s00296-017-3798-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/17/2017] [Indexed: 11/28/2022]
Abstract
The aim of this article was to critically assess the usefulness of hybrid molecular imaging (FDG PET/CT and FDG PET/MR) procedures in the evaluation of inflammatory activity in retroperitoneal fibrosis (RPF). A systematic review of the literature was performed using PubMed without timeline restriction and using the following keywords: retroperitoneal fibrosis, disease activity, diagnostic techniques, PET/CT, PET/MR. We evaluated full text articles written in the English language. Case reports, review articles or editorials and articles not in the field of interest of this review were excluded. Nine articles comprising a total of 186 patients met the inclusion criteria and were included and described in this systematic review. The new hybrid molecular imaging methods give promising results in the evaluation of the activity of the disease, quantification and prediction of therapeutic response and in tailoring medical therapy in RPF. FDG PET/CT can be a valuable tool in detecting disease activity, particularly in asymptomatic patients with RPF with acute phase reactant increase. Hybrid imaging can predict therapy response outcome and the best time for stent removal. Although PET/MR has potential advantage in small lesions and has reduced radiation exposure in comparison to PET/CT, PET quantification parameters have potentially higher diagnostic value over MR parameters in the evaluation of RPF. Acute phase reactants alone may not be reliable for the management and follow-up assessment of the disease. Hybrid imaging in RFP could be more comfortable, more accurate, with less radiation burden than different separate imaging studies acquired at different points in time.
Collapse
Affiliation(s)
- Isidora T Grozdic Milojevic
- Center for Nuclear Medicine, Clinical Center of Serbia, University of Belgrade, Visegradska 26, Belgrade, 11000, Serbia. .,Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
| | - Bogomir Milojevic
- Clinic of Urology, Clinical Center of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dragana P Sobic-Saranovic
- Center for Nuclear Medicine, Clinical Center of Serbia, University of Belgrade, Visegradska 26, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vera M Artiko
- Center for Nuclear Medicine, Clinical Center of Serbia, University of Belgrade, Visegradska 26, Belgrade, 11000, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
4
|
Jakhlal N, Elghazoui A, Jabbour Y, Karmouni T, Elkhader K, Koutani A, Ibenattya A. Fibrose rétropéritonéale: revue de littérature. Can Urol Assoc J 2017; 11:E26-E31. [PMID: 28163809 PMCID: PMC5262507 DOI: 10.5489/cuaj.4122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
La fibrose rétropéritonéale (FRP) est une maladie rare, caractérisée par la présence d’un tissu fibro-inflammatoire aberrant qui se forme souvent autour de la portion sous-rénale de l’aorte abdominale et des artères iliaques. Une obstruction urétérale est souvent observée. Récemment, la FPR idiopathique est rapportée parmi les manifestations de la maladie à IgG4. L’imagerie joue un rôle important dans le diagnostic de la FRP. Les glucocorticoïdes sont le traitement de référence, utilisés en monothérapie ou en association avec d’autres agents médicamenteux. En cas d’échec des mesures conservatrices, la chirurgie peut être proposée. Récemment, des techniques minimalement invasives ont été utilisées.
Collapse
Affiliation(s)
- Nabil Jakhlal
- Service d’Urologie B, hôpital Ibn Sina de Rabat, Maroc
| | | | | | | | | | | | | |
Collapse
|