EV-TRACK

Search > Results

You searched for: EV200065 (EV-TRACK ID)

Showing 1 - 4 of 4

Results list Study Tree

Details	EV-TRACK ID	Experiment nr.	Species	Sample type	Separation protocol	First author	Year	EV-METRIC
	EV200065	1/4	Homo sapiens	DLD1	(d)(U)C Filtration	Victoria Stary	2020	78%
Study summary Full title Short-course radiotherapy promotes pro-inflammatory macrophages via extracellular vesicles in human rectal cancer All authors Victoria Stary, Brigitte Wolf, Daniela Unterleuthner, Julia List, Merjem Talic, Johannes Längle, Andrea Beer, Johanna Strobl, Georg Stary, Helmut Dolznig, Michael Bergmann Md Journal Methods & Clinical Development Abstract Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumo (show more...)Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumor stroma initiating pro-inflammatory (M1) or immunosuppressive (M2) responses depending on their polarization status. Advances in tumor immunotherapy call for a detailed understanding of potential immunogenic mechanisms of irradiation routinely applied in rectal cancer patients. Methods: To test the effects of radiotherapy on TAM, we ex vivo irradiated tissue samples of human rectal cancer and assessed the phenotype by flow cytometry. We furthermore evaluated the distribution of leucocyte subsets in tissue sections of patients after short-course radiotherapy and compared findings to non-pretreated rectal cancer using an immunostaining approach. Organotypic assays (OTA) consisting of macrophages, cancer-associated fibroblast and cancer cell lines were used to dissect the immunological consequences of irradiation in macrophages. Results: We demonstrate that short-course neoadjuvant radiotherapy in rectal cancer patients is associated with a shift in the polarization of TAM towards an M1-like pro-inflammatory phenotype. In addition, ex vivo irradiation caused an increase in the phagocytic activity and enhanced expression of markers associated with stimulatory signals necessary for T-cell activation. In OTA we observed that this alteration in macrophage polarization could be mediated by extracellular vesicles (EV) derived from irradiated tumor cells. We identified high mobility group box 1 in EV from irradiated tumor cells as a potential effector signal in that crosstalk. Conclusions: Our findings highlight macrophages as potential effector cells upon irradiation in rectal cancer by diminishing their immunosuppressive phenotype and activate pro-inflammation. Our data indicate that clinically applied short-term radiotherapy for rectal cancer may be exploited to stimulate immunogenic macrophages and suggest to target the polarization status of macrophages to enhance future immunotherapeutic strategies. (hide) EV-METRIC 78% (97th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Cell culture supernatant Sample origin Control condition Focus vesicles extracellular vesicle Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C Filtration Protein markers EV: CD9/ CD81/ TSG101 non-EV: Calreticulin Proteomics no Show all info Study aim Function Sample Species Homo sapiens Sample Type Cell culture supernatant EV-producing cells DLD1 EV-harvesting Medium EV-depleted medium Preparation of EDS >=18h at >=100,000g Cell viability (%) 85 Cell count 3.00E+07 Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 10,000 g and 50,000 g Equal to or above 150,000 g Between 50,000 g and 100,000 g Pelleting performed Yes Pelleting: time(min) 90 Pelleting: rotor type T-1250 Pelleting: speed (g) 243836 Wash: volume per pellet (ml) 1 Wash: time (min) 90 Wash: Rotor Type SW 41 Ti Wash: speed (g) 92,500 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method BCA Western Blot Detected EV-associated proteins CD9/ CD81/ TSG101 Not detected contaminants Calreticulin Characterization: Lipid analysis No Characterization: Particle analysis NTA Report type Mean Reported size (nm) 132 EV concentration Yes EM EM-type Transmission-EM/ Cryo-EM Image type Close-up, Wide-field

	EV200065	2/4	Homo sapiens	DLD1	(d)(U)C Filtration	Victoria Stary	2020	78%
Study summary Full title Short-course radiotherapy promotes pro-inflammatory macrophages via extracellular vesicles in human rectal cancer All authors Victoria Stary, Brigitte Wolf, Daniela Unterleuthner, Julia List, Merjem Talic, Johannes Längle, Andrea Beer, Johanna Strobl, Georg Stary, Helmut Dolznig, Michael Bergmann Md Journal Methods & Clinical Development Abstract Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumo (show more...)Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumor stroma initiating pro-inflammatory (M1) or immunosuppressive (M2) responses depending on their polarization status. Advances in tumor immunotherapy call for a detailed understanding of potential immunogenic mechanisms of irradiation routinely applied in rectal cancer patients. Methods: To test the effects of radiotherapy on TAM, we ex vivo irradiated tissue samples of human rectal cancer and assessed the phenotype by flow cytometry. We furthermore evaluated the distribution of leucocyte subsets in tissue sections of patients after short-course radiotherapy and compared findings to non-pretreated rectal cancer using an immunostaining approach. Organotypic assays (OTA) consisting of macrophages, cancer-associated fibroblast and cancer cell lines were used to dissect the immunological consequences of irradiation in macrophages. Results: We demonstrate that short-course neoadjuvant radiotherapy in rectal cancer patients is associated with a shift in the polarization of TAM towards an M1-like pro-inflammatory phenotype. In addition, ex vivo irradiation caused an increase in the phagocytic activity and enhanced expression of markers associated with stimulatory signals necessary for T-cell activation. In OTA we observed that this alteration in macrophage polarization could be mediated by extracellular vesicles (EV) derived from irradiated tumor cells. We identified high mobility group box 1 in EV from irradiated tumor cells as a potential effector signal in that crosstalk. Conclusions: Our findings highlight macrophages as potential effector cells upon irradiation in rectal cancer by diminishing their immunosuppressive phenotype and activate pro-inflammation. Our data indicate that clinically applied short-term radiotherapy for rectal cancer may be exploited to stimulate immunogenic macrophages and suggest to target the polarization status of macrophages to enhance future immunotherapeutic strategies. (hide) EV-METRIC 78% (97th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Cell culture supernatant Sample origin gamma irradiation Focus vesicles extracellular vesicle Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C Filtration Protein markers EV: CD9/ CD81/ TSG101 non-EV: Calreticulin Proteomics no Show all info Study aim Function Sample Species Homo sapiens Sample Type Cell culture supernatant EV-producing cells DLD1 EV-harvesting Medium EV-depleted medium Preparation of EDS >=18h at >=100,000g Cell viability (%) 85 Cell count 3.00E+07 Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 10,000 g and 50,000 g Equal to or above 150,000 g Between 50,000 g and 100,000 g Pelleting performed Yes Pelleting: time(min) 90 Pelleting: rotor type T-1250 Pelleting: speed (g) 243836 Wash: volume per pellet (ml) 1 Wash: time (min) 90 Wash: Rotor Type SW 41 Ti Wash: speed (g) 92,500 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method BCA Western Blot Detected EV-associated proteins CD9/ CD81/ TSG101 Not detected contaminants Calreticulin Characterization: Lipid analysis No Characterization: Particle analysis NTA Report type Mean Reported size (nm) 137 EV concentration Yes EM EM-type Transmission-EM/ Cryo-EM Image type Close-up, Wide-field

	EV200065	3/4	Homo sapiens	HCT116	(d)(U)C Filtration	Victoria Stary	2020	78%
Study summary Full title Short-course radiotherapy promotes pro-inflammatory macrophages via extracellular vesicles in human rectal cancer All authors Victoria Stary, Brigitte Wolf, Daniela Unterleuthner, Julia List, Merjem Talic, Johannes Längle, Andrea Beer, Johanna Strobl, Georg Stary, Helmut Dolznig, Michael Bergmann Md Journal Methods & Clinical Development Abstract Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumo (show more...)Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumor stroma initiating pro-inflammatory (M1) or immunosuppressive (M2) responses depending on their polarization status. Advances in tumor immunotherapy call for a detailed understanding of potential immunogenic mechanisms of irradiation routinely applied in rectal cancer patients. Methods: To test the effects of radiotherapy on TAM, we ex vivo irradiated tissue samples of human rectal cancer and assessed the phenotype by flow cytometry. We furthermore evaluated the distribution of leucocyte subsets in tissue sections of patients after short-course radiotherapy and compared findings to non-pretreated rectal cancer using an immunostaining approach. Organotypic assays (OTA) consisting of macrophages, cancer-associated fibroblast and cancer cell lines were used to dissect the immunological consequences of irradiation in macrophages. Results: We demonstrate that short-course neoadjuvant radiotherapy in rectal cancer patients is associated with a shift in the polarization of TAM towards an M1-like pro-inflammatory phenotype. In addition, ex vivo irradiation caused an increase in the phagocytic activity and enhanced expression of markers associated with stimulatory signals necessary for T-cell activation. In OTA we observed that this alteration in macrophage polarization could be mediated by extracellular vesicles (EV) derived from irradiated tumor cells. We identified high mobility group box 1 in EV from irradiated tumor cells as a potential effector signal in that crosstalk. Conclusions: Our findings highlight macrophages as potential effector cells upon irradiation in rectal cancer by diminishing their immunosuppressive phenotype and activate pro-inflammation. Our data indicate that clinically applied short-term radiotherapy for rectal cancer may be exploited to stimulate immunogenic macrophages and suggest to target the polarization status of macrophages to enhance future immunotherapeutic strategies. (hide) EV-METRIC 78% (97th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Cell culture supernatant Sample origin Control condition Focus vesicles extracellular vesicle Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C Filtration Protein markers EV: CD9/ CD81/ TSG101 non-EV: Calreticulin Proteomics no Show all info Study aim Function Sample Species Homo sapiens Sample Type Cell culture supernatant EV-producing cells HCT116 EV-harvesting Medium EV-depleted medium Preparation of EDS >=18h at >=100,000g Cell viability (%) 85 Cell count 4.00E+07 Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 10,000 g and 50,000 g Equal to or above 150,000 g Between 50,000 g and 100,000 g Pelleting performed Yes Pelleting: time(min) 90 Pelleting: rotor type T-1250 Pelleting: speed (g) 243836 Wash: volume per pellet (ml) 1 Wash: time (min) 90 Wash: Rotor Type SW 41 Ti Wash: speed (g) 92,500 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method BCA Western Blot Detected EV-associated proteins CD9/ CD81/ TSG101 Not detected contaminants Calreticulin Characterization: Lipid analysis No Characterization: Particle analysis NTA Report type Mean Reported size (nm) 157 EV concentration Yes EM EM-type Transmission-EM/ Cryo-EM Image type Close-up, Wide-field

	EV200065	4/4	Homo sapiens	HCT116	(d)(U)C Filtration	Victoria Stary	2020	78%
Study summary Full title Short-course radiotherapy promotes pro-inflammatory macrophages via extracellular vesicles in human rectal cancer All authors Victoria Stary, Brigitte Wolf, Daniela Unterleuthner, Julia List, Merjem Talic, Johannes Längle, Andrea Beer, Johanna Strobl, Georg Stary, Helmut Dolznig, Michael Bergmann Md Journal Methods & Clinical Development Abstract Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumo (show more...)Background: Tumor-associated macrophages (TAM) constitute the most abundant immune cells in the tumor stroma initiating pro-inflammatory (M1) or immunosuppressive (M2) responses depending on their polarization status. Advances in tumor immunotherapy call for a detailed understanding of potential immunogenic mechanisms of irradiation routinely applied in rectal cancer patients. Methods: To test the effects of radiotherapy on TAM, we ex vivo irradiated tissue samples of human rectal cancer and assessed the phenotype by flow cytometry. We furthermore evaluated the distribution of leucocyte subsets in tissue sections of patients after short-course radiotherapy and compared findings to non-pretreated rectal cancer using an immunostaining approach. Organotypic assays (OTA) consisting of macrophages, cancer-associated fibroblast and cancer cell lines were used to dissect the immunological consequences of irradiation in macrophages. Results: We demonstrate that short-course neoadjuvant radiotherapy in rectal cancer patients is associated with a shift in the polarization of TAM towards an M1-like pro-inflammatory phenotype. In addition, ex vivo irradiation caused an increase in the phagocytic activity and enhanced expression of markers associated with stimulatory signals necessary for T-cell activation. In OTA we observed that this alteration in macrophage polarization could be mediated by extracellular vesicles (EV) derived from irradiated tumor cells. We identified high mobility group box 1 in EV from irradiated tumor cells as a potential effector signal in that crosstalk. Conclusions: Our findings highlight macrophages as potential effector cells upon irradiation in rectal cancer by diminishing their immunosuppressive phenotype and activate pro-inflammation. Our data indicate that clinically applied short-term radiotherapy for rectal cancer may be exploited to stimulate immunogenic macrophages and suggest to target the polarization status of macrophages to enhance future immunotherapeutic strategies. (hide) EV-METRIC 78% (97th percentile of all experiments on the same sample type) Reported Not reported Not applicable EV-enriched proteins Protein analysis: analysis of three or more EV-enriched proteins non EV-enriched protein Protein analysis: assessment of a non-EV-enriched protein qualitative and quantitative analysis Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected. electron microscopy images Particle analysis: inclusion of a widefield and close-up electron microscopy image density gradient Separation method: density gradient, at least as validation of results attributed to EVs EV density Separation method: reporting of obtained EV density ultracentrifugation specifics Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps antibody specifics Protein analysis: antibody clone/reference number and dilution lysate preparation Protein analysis: lysis buffer composition Study data Sample type Cell culture supernatant Sample origin gamma irradiation Focus vesicles extracellular vesicle Separation protocol Separation protocol Gives a short, non-chronological overview of the different steps of the separation protocol. dUC = (Differential) (ultra)centrifugation DG = density gradient UF = ultrafiltration SEC = size-exclusion chromatography IAF = immuno-affinity capture (d)(U)C Filtration Protein markers EV: CD9/ CD81/ TSG101 non-EV: Calreticulin Proteomics no Show all info Study aim Function Sample Species Homo sapiens Sample Type Cell culture supernatant EV-producing cells HCT116 EV-harvesting Medium EV-depleted medium Preparation of EDS >=18h at >=100,000g Cell viability (%) 85 Cell count 4.00E+07 Separation Method (Differential) (ultra)centrifugation dUC: centrifugation steps Below or equal to 800 g Between 10,000 g and 50,000 g Equal to or above 150,000 g Between 50,000 g and 100,000 g Pelleting performed Yes Pelleting: time(min) 90 Pelleting: rotor type T-1250 Pelleting: speed (g) 243836 Wash: volume per pellet (ml) 1 Wash: time (min) 90 Wash: Rotor Type SW 41 Ti Wash: speed (g) 92,500 Filtration steps 0.22µm or 0.2µm Characterization: Protein analysis Protein Concentration Method BCA Western Blot Detected EV-associated proteins CD9/ CD81/ TSG101 Not detected contaminants Calreticulin Characterization: Lipid analysis No Characterization: Particle analysis NTA Report type Mean Reported size (nm) 161 EV concentration Yes EM EM-type Transmission-EM/ Cryo-EM Image type Close-up, Wide-field

				1 - 4 of 4

EV-TRACK ID	EV200065
species	Homo sapiens
sample type	Cell culture
cell type	DLD1	DLD1	HCT116	HCT116
condition	Control condition	gamma irradiation	Control condition	gamma irradiation
separation protocol	(d)(U)C Filtration	(d)(U)C Filtration	(d)(U)C Filtration	(d)(U)C Filtration
Exp. nr.	1	2	3	4
EV-METRIC %	78	78	78	78