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Urzì O, Bergqvist M, Lässer C, Moschetti M, Johansson J, D´Arrigo D, Olofsson Bagge R, Crescitelli R. Heat inactivation of foetal bovine serum performed after EV-depletion influences the proteome of cell-derived extracellular vesicles. J Extracell Vesicles 2024; 13:e12408. [PMID: 38263378 PMCID: PMC10805629 DOI: 10.1002/jev2.12408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 12/06/2023] [Accepted: 01/08/2024] [Indexed: 01/25/2024] Open
Abstract
The release of extracellular vesicles (EVs) in cell cultures as well as their molecular cargo can be influenced by cell culture conditions such as the presence of foetal bovine serum (FBS). Although several studies have evaluated the effect of removing FBS-derived EVs by ultracentrifugation (UC), less is known about the influence of FBS heat inactivation (HI) on the cell-derived EVs. To assess this, three protocols based on different combinations of EV depletion by UC and HI were evaluated, including FBS ultracentrifuged but not heat inactivated (no-HI FBS), FBS heat inactivated before EV depletion (HI-before EV-depl FBS), and FBS heat inactivated after EV depletion (HI-after EV-depl FBS). We isolated large (L-EVs) and small EVs (S-EVs) from FBS treated in the three different ways, and we found that the S-EV pellet from HI-after EV-depl FBS was larger than the S-EV pellet from no-HI FBS and HI-before EV-depl FBS. Transmission electron microscopy, protein quantification, and particle number evaluation showed that HI-after EV-depl significantly increased the protein amount of S-EVs but had no significant effect on L-EVs. Consequently, the protein quantity of S-EVs isolated from three cell lines cultured in media supplemented with HI-after EV-depl FBS was significantly increased. Quantitative mass spectrometry analysis of FBS-derived S-EVs showed that the EV protein content was different when FBS was HI after EV depletion compared to EVs isolated from no-HI FBS and HI-before EV-depl FBS. Moreover, we show that several quantified proteins could be ascribed to human origin, thus demonstrating that FBS bovine proteins can mistakenly be attributed to human cell-derived EVs. We conclude that HI of FBS performed after EV depletion results in changes in the proteome, with molecules that co-isolate with EVs and can contaminate EVs when used in subsequent cell cultures. Our recommendation is, therefore, to always perform HI of FBS prior to EV depletion.
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Affiliation(s)
- Ornella Urzì
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical Sciences, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (Bi.N.D)University of PalermoPalermoItaly
| | - Markus Bergqvist
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Cecilia Lässer
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Marta Moschetti
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical Sciences, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (Bi.N.D)University of PalermoPalermoItaly
| | - Junko Johansson
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical Sciences, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Surgery, Sahlgrenska University HospitalRegion Västra GötalandGothenburgSweden
| | - Daniele D´Arrigo
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Regenerative Medicine Technologies LaboratoryEnte Ospedaliero CantonaleBellinzonaSwitzerland
| | - Roger Olofsson Bagge
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical Sciences, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Surgery, Sahlgrenska University HospitalRegion Västra GötalandGothenburgSweden
| | - Rossella Crescitelli
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical Sciences, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
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Bhargava S, Jankowski J, Merckelbach E, Roth CE, Craveiro RB, Wolf M. Development, Establishment, and Validation of a Model for the Mineralization of Periodontium Remodelling Cells: Cementoblasts. Int J Mol Sci 2023; 24:13829. [PMID: 37762132 PMCID: PMC10531176 DOI: 10.3390/ijms241813829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Chronic kidney disease (CKD) patients undergoing dialysis are at high risk of bone fractures. CKD-induced mineral and bone disorder is extended to periodontal disease due to changes in the ionic composition of saliva in CKD patients, dysregulating mineralization, hindering regeneration and thereby promoting the progression of dental complications. Despite the importance of cementum for overall oral health, the mechanisms that regulate its development and regeneration are not well comprehended, and a lack of sufficient in vitro experimental models has hindered research progress. In this study, the impact of experimental conditions on the calcification of cementoblasts was systematically investigated, aimed at establishing a standardized and validated model for the calcification of cementoblasts. The effects of phosphate, calcium, ascorbic acid, β-glycerolphosphate, dexamethasone, and fetal calf serum on the calcification process of cementoblasts were analyzed over a wide range of concentrations and time points by investigating calcium content, cell viability, gene expression and kinase activity. Cementoblasts calcified in a concentration- and time-dependent manner with higher concentrations of supplements cause a higher degree of calcification but decreased cell viability. Phosphate and calcium have a significantly stronger effect on cementoblast calcification processes compared to osteogenic supplements: ascorbic acid, β-glycerolphosphate, and dexamethasone induce calcification over a wide range of osteogenic signalling pathways, with osteopontin being a central target of gene regulation. Conversely, treatment with ascorbic acid, β-glycerolphosphate, and dexamethasone leads to activating only selected pathways, especially promoting bone sialoprotein expression. The developed and validated cementoblast calcification protocol, incubating up to 60% confluent cementoblasts with 1.9 mmol L-1 of phosphate supplementation for a reasonable, multi-pathway calcification induction and 10 mmol L-1 β-glycerolphosphate, 75 µmol L-1 ascorbic acid and 10 nmol L-1 dexamethasone for a reasonable osteogenic differentiation-based calcification induction, provides standard in vitro experimental models for better understanding cementoblast function and regeneration.
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Affiliation(s)
- Shruti Bhargava
- Institute of Molecular Cardiovascular Research, Medical Faculty, RWTH Aachen University, 52062 Aachen, Germany; (S.B.); (E.M.)
| | - Joachim Jankowski
- Institute of Molecular Cardiovascular Research, Medical Faculty, RWTH Aachen University, 52062 Aachen, Germany; (S.B.); (E.M.)
- Aachen-Maastricht Institute for Cardiorenal Disease (AMICARE), University Hospital RWTH Aachen, 52062 Aachen, Germany
- Experimental Vascular Pathology, Cardiovascular Research Institute Maastricht (CARIM), University of Maastricht, 6211 Maastricht, The Netherlands
| | - Erik Merckelbach
- Institute of Molecular Cardiovascular Research, Medical Faculty, RWTH Aachen University, 52062 Aachen, Germany; (S.B.); (E.M.)
| | - Charlotte Elisa Roth
- Department of Orthodontics, Dental Clinic, University of Aachen, Pauwelsstr. 30, 52074 Aachen, Germany; (C.E.R.); (R.B.C.); (M.W.)
| | - Rogerio Bastos Craveiro
- Department of Orthodontics, Dental Clinic, University of Aachen, Pauwelsstr. 30, 52074 Aachen, Germany; (C.E.R.); (R.B.C.); (M.W.)
| | - Michael Wolf
- Department of Orthodontics, Dental Clinic, University of Aachen, Pauwelsstr. 30, 52074 Aachen, Germany; (C.E.R.); (R.B.C.); (M.W.)
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Ton Tran HT, Li C, Chakraberty R, Cairo CW. NEU1 and NEU3 enzymes alter CD22 organization on B cells. BIOPHYSICAL REPORTS 2022; 2:100064. [PMID: 36425332 PMCID: PMC9680808 DOI: 10.1016/j.bpr.2022.100064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/19/2022] [Indexed: 06/16/2023]
Abstract
The B cell membrane expresses sialic-acid-binding immunoglobulin-like lectins, also called Siglecs, that are important for modulating immune response. Siglecs have interactions with sialoglycoproteins found on the same membrane (cis-ligands) that result in homotypic and heterotypic receptor clusters. The regulation and organization of these clusters, and their effect on cell activation, is not clearly understood. We investigated the role of human neuraminidase enzymes NEU1 and NEU3 on the clustering of CD22 on B cells using confocal microscopy. We observed that native NEU1 and NEU3 activity influence the cluster size of CD22. Using single-particle tracking, we observed that NEU3 activity increased the lateral mobility of CD22, which was in contrast to the effect of exogenous bacterial NEU enzymes. Moreover, we show that native NEU1 and NEU3 activity influenced cellular Ca2+ levels, supporting a role for these enzymes in regulating B cell activation. Our results establish a role for native NEU activity in modulating CD22 organization and function on B cells.
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Affiliation(s)
- Hanh-Thuc Ton Tran
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Caishun Li
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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Guo X, Schaudinn C, Blume-Peytavi U, Vogt A, Rancan F. Effects of Adipose-Derived Stem Cells and Their Conditioned Medium in a Human Ex Vivo Wound Model. Cells 2022; 11:cells11071198. [PMID: 35406762 PMCID: PMC8998073 DOI: 10.3390/cells11071198] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/23/2022] [Accepted: 03/30/2022] [Indexed: 12/14/2022] Open
Abstract
Adult stem cells have been extensively investigated for tissue repair therapies. Adipose-derived stem cells (ASCs) were shown to improve wound healing by promoting re-epithelialization and vascularization as well as modulating the inflammatory immune response. In this study, we used ex vivo human skin cultured in a six-well plate with trans-well inserts as a model for superficial wounds. Standardized wounds were created and treated with allogeneic ASCs, ASCs conditioned medium (ASC-CM), or cell culture medium (DMEM) supplemented with fetal calf serum (FCS). Skin viability (XTT test), histology (hematoxylin and eosin, H and E), β-catenin expression as well as inflammatory mediators and growth factors were monitored over 12 days of skin culture. We observed only a moderate time-dependent decrease in skin metabolic activity while skin morphology was preserved, and re-epithelialization occurred at the wound edges. An increase in β-catenin expression was observed in the newly formed epithelia, especially in the samples treated with ASC-CM. In general, increased growth factors and inflammatory mediators, e.g., hepatocytes growth factor (HGF), platelet-derived growth factor subunit AA (PDGF-AA), IL-1α, IL-7, TNF-α, and IL-10, were observed over the incubation time. Interestingly, different expression profiles were observed for the different treatments. Samples treated with ASC-CM significantly increased the levels of inflammatory cytokines and PDGF-AA with respect to control, whereas the treatment with ASCs in DMEM with 10% FCS resulted in significantly increased levels of fibroblast growth factor-basic (FGF-basic) and moderate increases of immunomodulatory cytokines. These results confirm that the wound microenvironment can influence the type of mediators secreted by ASCs and the mode as to how they improve the wound healing process. Comparative investigations with pre-activated ASCs will elucidate further aspects of the wound healing mechanism and improve the protocols of ACS application.
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Affiliation(s)
- Xiao Guo
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venerology and and Allergy, Charité–Universitaetsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (X.G.); (U.B.-P.); (A.V.)
| | - Christoph Schaudinn
- Advanced Light and Electron Microscopy, Zentrum für Biologische Gefahren und Spezielle Pathogene 4 (ZBS4), Robert Koch Institute, 13353 Berlin, Germany;
| | - Ulrike Blume-Peytavi
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venerology and and Allergy, Charité–Universitaetsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (X.G.); (U.B.-P.); (A.V.)
| | - Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venerology and and Allergy, Charité–Universitaetsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (X.G.); (U.B.-P.); (A.V.)
| | - Fiorenza Rancan
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venerology and and Allergy, Charité–Universitaetsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany; (X.G.); (U.B.-P.); (A.V.)
- Correspondence: ; Tel.: +49-30-450518347
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Bonnet M, Lagier JC, Raoult D, Khelaifia S. Bacterial culture through selective and non-selective conditions: the evolution of culture media in clinical microbiology. New Microbes New Infect 2019; 34:100622. [PMID: 31956419 PMCID: PMC6961714 DOI: 10.1016/j.nmni.2019.100622] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 12/28/2022] Open
Abstract
Microbiology has been largely developed thanks to the discovery and optimization of culture media. The first liquid artificial culture medium was created by Louis Pasteur in 1860. Previously, bacterial growth on daily materials such as some foods had been observed. These observations highlighted the importance of the bacteria's natural environment and their nutritional needs in the development of culture media for their isolation. A culture medium is essentially composed of basic elements (water, nutrients), to which must be added different growth factors that will be specific to each bacterium and necessary for their growth. The evolution of bacterial culture through the media used for their culture began with the development of the first solid culture medium by Koch, allowing not only the production of bacterial colonies, but also the possibility of purifying a bacterial clone. The main gelling agent used in solid culture media is agar. However, some limits have been observed in the use of agar because of some extremely oxygen-sensitive bacteria that do not grow on agar media, and other alternatives were proposed and tested. Then, the discovery of antimicrobial agents and their specific targets prompted the emergence of selective media. These inhibiting agents make it possible to eliminate undesirable bacteria from the microbiota and select the bacteria desired. Thanks to a better knowledge of the bacterial environment, it will be possible to develop new culture media and new culture conditions, better adapted to certain fastidious bacteria that are difficult to isolate.
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Affiliation(s)
- M Bonnet
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France
| | - J C Lagier
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France.,Institut Hospitalo-Universitaire Méditerranée Infection, Marseillle, France
| | - D Raoult
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France.,Institut Hospitalo-Universitaire Méditerranée Infection, Marseillle, France
| | - S Khelaifia
- Aix-Marseille Univ, IRD, APHM, MEPHI, Marseille, France.,Institut Hospitalo-Universitaire Méditerranée Infection, Marseillle, France
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El-Bahy MM, Khalifa MM, Méabed EM. Toxoplasma gondii: Prolonged in-vitro maintenance of virulent tachyzoites in fluid media at low temperatures. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2018.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Mohamed M. El-Bahy
- Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, El-Giza, Egypt
| | - Marwa M. Khalifa
- Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, El-Giza, Egypt
| | - Eman M.H. Méabed
- Department of Parasitology, Faculty of Medicine, Fayoum University, Egypt
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7
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Abubakar AA, Ibrahim SM, Ali AK, Handool KO, Khan MS, Noordin Mustapha M, Azmi Ibrahim T, Kaka U, Mohamad Yusof L. Postnatal ex vivo rat model for longitudinal bone growth investigations. Animal Model Exp Med 2019; 2:34-43. [PMID: 31016285 PMCID: PMC6431117 DOI: 10.1002/ame2.12051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 11/20/2018] [Accepted: 12/05/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Chondrocytes in the growth plate (GP) undergo increases in volume during different cascades of cell differentiation during longitudinal bone growth. The volume increase is reported to be the most significant variable in understanding the mechanism of long bone growth. METHODS Forty-five postnatal Sprague-Dawley rat pups, 7-15 days old were divided into nine age groups (P7-P15). Five pups were allocated to each group. The rats were sacrificed and tibia and metatarsal bones were harvested. Bone lengths were measured after 0, 24, 48, and 72 hours of ex vivo incubation. Histology of bones was carried out, and GP lengths and chondrocyte densities were determined. RESULTS There were significant differences in bone length among the age groups after 0 and 72 hours of incubation. Histological sectioning was possible in metatarsal bone from all age groups, and in tibia from 7- to 13-day-old rats. No significant differences in tibia and metatarsal GP lengths were seen among different age groups at 0 and 72 hours of incubation. Significant differences in chondrocyte densities along the epiphyseal GP of the bones between 0 and 72 hours of incubation were observed in most of the age groups. CONCLUSION Ex vivo growth of tibia and metatarsal bones of rats aged 7-15 days old is possible, with percentage growth rates of 23.87 ± 0.80% and 40.38 ± 0.95% measured in tibia and metatarsal bone, respectively. Histological sectioning of bones was carried out without the need for decalcification in P7-P13 tibia and P7-P15 metatarsal bone. Increases in chondrocyte density along the GP influence overall bone elongation.
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Affiliation(s)
- Adamu Abdul Abubakar
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
- Department of Veterinary Surgery and RadiologyUsmanu Danfodiyo UniversitySokotoNigeria
| | - Sahar Mohammed Ibrahim
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
- Department of Surgery and TheriogenologyCollege of Veterinary MedicineUniversity of MosulMosulIraq
| | - Ahmed Khalaf Ali
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
- Department of Surgery and TheriogenologyCollege of Veterinary MedicineUniversity of MosulMosulIraq
| | - Kareem Obayes Handool
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
| | - Mohammad Shuaib Khan
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
- Faculty of Veterinary and Animal ScienceGomal UniversityDera Ismail KhanPakistan
| | | | - Tengku Azmi Ibrahim
- Department of Pre‐Clinical Veterinary SciencesUniversiti Putra MalaysiaSerdangMalaysia
| | - Ubedullah Kaka
- Laboratory of Sustainable Animal Production and BiodiversityInstitute of Tropical Agriculture and Food SecurityUniversiti Putra MalaysiaSerdangMalaysia
| | - Loqman Mohamad Yusof
- Department of Companion Animal Medicine and SurgeryUniversiti Putra MalaysiaSerdangMalaysia
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8
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Tonry C, Armstrong J, Pennington SR. Probing the prostate tumour microenvironment I: impact of glucose deprivation on a cell model of prostate cancer progression. Oncotarget 2017; 8:14374-14394. [PMID: 28086232 PMCID: PMC5362412 DOI: 10.18632/oncotarget.14605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022] Open
Abstract
In the developed world, prostate cancer is the most common cancer diagnosis in men. Although prostate cancer initially presents as a non life-threatening disease, 90% of patients will develop castration resistant prostate cancer (CRPC), which preludes distant metastasis and is largely accountable for prostate cancer associated deaths. This is because as yet, there are no viable molecular therapeutic targets for effective treatment of CRPC. It is now widely accepted that cancer cells can alter their metabolic profile during the course of tumourgenesis and metastasis such that they are able to survive in oxygen and nutrient-poor environments. This work was aimed towards gaining greater mechanistic understanding of how such 'stresses' in the tumour microenvironment impact on both androgen sensitive (LNCaP) and androgen independent (LNCaP-abl and LNCaP-abl-Hof) prostate cancer cell lines. Here we have applied technically robust and reproducible label-free liquid chromatography mass spectrometry analysis for comprehensive proteomic profiling of prostate cancer cell lines under nutrient deficient (low glucose) conditions. This led to the identification of approximately 4,000 proteins - one of the largest protein datasets for prostate cancer cell lines established to date. The biological and clinical significance of proteins showing a significant change in expression as result of low glucose conditions was established. Novel, intuitive workflows were subsequently implemented to ensure the verification of selected proteins of interest in a robust, reproducible and high throughput manner. Overall, these data suggest that this strategy supports identification of protein biomarkers of prostate cancer progression and potential therapeutic targets for CRPC.
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Affiliation(s)
- Claire Tonry
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, Ireland
| | | | - Stephen R Pennington
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, Ireland
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Esmaeli A, Moshrefi M, Shamsara A, Eftekhar-vaghefi SH, Nematollahi-mahani SN. Xeno-free culture condition for human bone marrow and umbilical cord matrix-derived mesenchymal stem/stromal cells using human umbilical cord blood serum. Int J Reprod Biomed 2016; 14:567-576. [PMID: 27738658 PMCID: PMC5054293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Fetal bovine serum (FBS) is widely used in cell culture laboratories, risk of zoonotic infections and allergic side effects create obstacles for its use in clinical trials. Therefore, an alternative supplement with proper inherent growth-promoting activities is demanded. OBJECTIVE To find FBS substitute, we tested human umbilical cord blood serum (hUCS) for proliferation of human umbilical cord matrix derived mesenchymal stem cells (hUC-MSCs) and human bone marrow-derived mesenchymal cells (hBM-MSCs). MATERIALS AND METHODS Umbilical cord blood of healthy neonates, delivered by Caesarian section, was collected and the serum was separated. hUC-MSCs and hBM-MSCs were isolated and characterized by assessment of cell surface antigens by flow cytometry, alkaline phosphatase activity and osteogenic/adipogenic differentiation potential. The cells were then cultured in Iscove's Modified Dulbecco's Medium (IMDM) by conventional methods in three preparations: 1- with hUCS, 2- with FBS, and 3- without serum supplements. Cell proliferation was measured using WST-1 assay, and cell viability was assessed by trypan blue staining. RESULTS The cells cultured in hUCS and FBS exhibited similar morphology and mesenchymal stem cells properties. WST-1 proliferation assay data showed no significant difference between the proliferation rate of either cells following hUCS and FBS supplementation. Trypan blue exclusion dye test also revealed no significant difference for viability between hUCS and FBS groups. A significant difference was detected between the proliferation rate of stem cells cultured in serum-supplemented medium compared with serum-free medium. CONCLUSION Our results indicate that human umbilical cord serum can effectively support proliferation of hBM-MSCS and hUC-MSCs in vitro and can be used as an appropriate substitute for FBS, especially in clinical studies.
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Affiliation(s)
- Azadeh Esmaeli
- Physiology Research Center, Institute of neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. ,Kerman Student Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mojgan Moshrefi
- Physiology Research Center, Institute of neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. ,Research and Clinical Center of Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.
| | - Ali Shamsara
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. ,Department of Anatomy, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | | | - Seyed Noureddin Nematollahi-mahani
- Physiology Research Center, Institute of neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. ,Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. ,Department of Anatomy, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
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10
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Esmaeli A, Moshrefi M, Shamsara A, Eftekhar-vaghefi SH, Nematollahi-mahani SN. Xeno-free culture condition for human bone marrow and umbilical cord matrix-derived mesenchymal stem/stromal cells using human umbilical cord blood serum. Int J Reprod Biomed 2016. [DOI: 10.29252/ijrm.14.9.567] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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11
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Rahman H, Qasim M, Oellerich M, Asif AR. Identification of the novel interacting partners of the mammalian target of rapamycin complex 1 in human CCRF-CEM and HEK293 cells. Int J Mol Sci 2014; 15:4823-36. [PMID: 24646917 PMCID: PMC3975426 DOI: 10.3390/ijms15034823] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 03/05/2014] [Accepted: 03/06/2014] [Indexed: 01/21/2023] Open
Abstract
The present study was undertaken to identify proteins that interact with the mammalian target of rapamycin complex 1 (mTORC1) to enable it to carry out its crucial cell signaling functions. Endogenous and myc-tag mTORC1 was purified, in-gel tryptic digested and then identified by nano-LC ESI Q-TOF MS/MS analysis. A total of nine novel interacting proteins were identified in both endogenous and myc-tag mTORC1 purifications. These new mTORC1 interacting partners include heterogeneous nuclear ribonucleoproteins A2/B1, enhancer of mRNA decapping protein 4, 60S acidic ribosomal protein, P0, nucleolin, dynamin 2, glyceraldehyde 3 phosphate dehydrogenase, 2-oxoglutarate dehydrogenase, glycosyl transferase 25 family member 1 and prohibitin 2. Furthermore hnRNP A2/B1 and dynamin 2 interaction with mTORC1 was confirmed on immunoblotting. The present study has for the first time identified novel interacting partners of mTORC1 in human T lymphoblasts (CCRF-CEM) and human embryonic kidney (HEK293) cells. These new interacting proteins may offer new targets for therapeutic interventions in human diseases caused by perturbed mTORC1 signaling.
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Affiliation(s)
- Hazir Rahman
- Institute for Clinical Chemistry/UMG-Laboratories, University Medical Centre, Robert-Koch-Str. 40, Goettingen 37075, Germany.
| | - Muhammad Qasim
- Institute for Clinical Chemistry/UMG-Laboratories, University Medical Centre, Robert-Koch-Str. 40, Goettingen 37075, Germany.
| | - Michael Oellerich
- Institute for Clinical Chemistry/UMG-Laboratories, University Medical Centre, Robert-Koch-Str. 40, Goettingen 37075, Germany.
| | - Abdul R Asif
- Institute for Clinical Chemistry/UMG-Laboratories, University Medical Centre, Robert-Koch-Str. 40, Goettingen 37075, Germany.
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Powers JM, Trobridge GD. Effect of fetal bovine serum on foamy and lentiviral vector production. Hum Gene Ther Methods 2013; 24:307-9. [PMID: 23984723 DOI: 10.1089/hgtb.2013.097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- John M Powers
- 1 Department of Pharmaceutical Sciences, Washington State University , Pullman, WA 99164
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van Dooren FH, Duijvis NW, te Velde AA. Analysis of cytokines and chemokines produced by whole blood, peripheral mononuclear and polymorphonuclear cells. J Immunol Methods 2013; 396:128-33. [PMID: 23994257 DOI: 10.1016/j.jim.2013.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 08/14/2013] [Accepted: 08/14/2013] [Indexed: 12/22/2022]
Abstract
Cytokines are immunomodulating proteins involved in cellular communication. The levels of different cytokines reflect the immune capabilities of a person. In literature both whole blood and peripheral blood mononuclear cells (PBMCs) are used, which might lead to different results. The choice between these different sources is not always explained. The goal of our experiments is to determine the cytokine response of whole blood, PBMCs and polymorphonuclear cells (PMNs) after stimulation with lipopolysaccharide (LPS). We used a multiplex analysis to determine a difference in cytokine secretion patterns. In general, PBMCs demonstrated the highest cytokine production and PMNs have an overall low cytokine production. CCL11 and interleukin-23 (IL-23) (and IL-12p40) were exclusively expressed in whole blood. IL-20, VEGF and GM-CSF were expressed only by PBMCs. This difference in expression could be explained by the bioactive components in serum, presence and interaction with granulocytes or platelets in whole blood, the anticoagulant heparin in whole blood and others. The expression of cytokines by cells is dependent on the microenvironment. Different conditions lead to different results. We recommend a thorough examination of the conditions before performing experiments.
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Affiliation(s)
- Faas H van Dooren
- Tytgat Institute for Liver and Intestinal Research, Meibergdreef 69-71, 1105 BK Amsterdam, The Netherlands.
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Establishment of thiopurine S-methyltransferase gene knockdown in jurkat T-lymphocytes: an in vitro model of TPMT polymorphism. Ther Drug Monit 2013; 34:584-92. [PMID: 22972540 DOI: 10.1097/ftd.0b013e31826ec4b4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Thiopurine S-methyltransferase (TPMT) is an excellent example of an enzyme whose pharmacogenetic polymorphisms affect efficacy and toxicity of a drug. The association between TPMT activity and thiopurine-related myelosuppression is well recognized. To study the significance of TPMT deficiency in thiopurine metabolism and immunosuppressive activity in vitro, we established RNA interference-based TPMT knockdown (kd) in a Jurkat cell line. RESULTS In Jurkat TPMT kd cells, TPMT expression was reduced to 73% at the RNA level and 83% at the protein level. TPMT kd cells were more sensitive to 6-mercaptopurine (6-MP) (10 μmol/L) and 6-thioguanine (6-TG) (8 μmol/L) than wild-type (wt) cells, (32% versus 20%) and (18% versus 9%), respectively. Both Jurkat wt and kd cells were more sensitive to 6-TG-induced apoptosis than to 6-MP. 6-TG activity was also more affected by TPMT levels than was 6-MP as reflected by IC60, concentrations that is, 6-MP [4.6 μmol/L (wt) and 4.7 μmol/L (kd)], 6-TG [2.7 μmol/L (wt) and 0.8 μmol/L (kd)]. IC60 concentrations induced significant apoptosis in both Jurkat wt and kd cells (257%, versus 314%) with 6-MP and (323% versus 306%) with 6-TG, respectively. At IC60 (6-MP) 6-thioguanine nucleotides (6-TGN) accumulation in cells was 518 versus 447 pmol/million cells in wt and kd cells, respectively. On the other hand 6-TGN accumulation at IC60 (6-TG) was 477 versus 570 pmol/million cells in wt and kd cells, respectively. 6-Methylated mercaptopurine (6-MeMP) concentrations were more affected than 6-TGN by TPMT kd (194 versus 10 pmol/million cells) in wt and kd cells, respectively. CONCLUSION We conclude that TPMT kd cells are an appropriate in vitro model to investigate the significance of TPMT deficiency with thiopurine therapy and could be helpful in understanding possible clinical consequences of TPMT polymorphism.
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