المصدر: Hillert-Richter ، L. K. et al. ، قياس تكوين مركب الإشارات المحفز للموت CD95 ومعالجة Procaspase-8 في هذا المجمع. J. Vis. Exp. (2021).
يصف هذا الفيديو النشاف الغربي القائم على التلألؤ الكيميائي للمحللات المناعية المرسبة. تساعد هذه التقنية في تحديد معالجة البروتين وتنشيطه. تتناسب الإشارة الكيميائية المكتشفة مع مستوى معالجة البروتين أثناء تنشيطه.
وفقا للاتفاقية الأخلاقية 42502-2-1273 Uni MD.
1. تحضير الخلايا للتجربة
ملاحظة: متوسط عدد الخلايا لهذا الترسيب المناعي هو 1 × 107. يجب زرع الخلايا الملتصقة قبل يوم واحد من التجربة بحيث يكون هناك 1 × 10 7 خلايا في يوم التجربة.
2. تحفيز CD95L
3. حصاد الخلايا وتحللها
4. الترسيب المناعي (IP)
6. كشف اللطخة الغربية
The authors have nothing to disclose.
12.5% SDS gel | Self-made | For two separating gels: 3.28 mL distilled H<sub>2</sub>O 2.5 mL Tris; pH 8.8; 1.5 M 4.06 mL acrylamide 100 µL 10% SDS 100 µL 10% APS 7.5 µL TEMED for two collecting gels: 3.1 mL distilled H<sub>2</sub>O 1.25 mL Tris; pH 6.8; 1.5 M 0.5 mL acrylamide 50 µL 10% SDS 25 µL 10% APS 7.5 µL TEMED | |
14.5 cm cell dishes | Greiner | 639160 | |
Acrylamide | Carl Roth | A124.1 | |
Aerosol filter pipet tips with high recovery filter and wide orifice | VWR | 46620-664 (North America) or 732-0559 (Europe) | Used for pipetting beads to the lysate |
Used for pipetting beads to the lysate | Sigma Aldrich | A2103 | Dilution: 1:4000 in PBST + 1:100 NaN<sub>3</sub> |
anti-APO-1 Ab | Provided in these experiments by Prof. P. Krammer or can be purchased by ENZO | ALX-805-038-C100 | Used only for immunoprecipitation |
anti-caspase-10 Ab | Biozol | MBL-M059-3 | Dilution: 1:1000 in PBST + 1:100 NaN<sub>3</sub> |
anti-caspase-3 Ab | Cell signaling | 9662 S | Dilution: 1:2000 in PBST + 1:100 NaN<sub>3</sub> |
anti-caspase-8 Ab C15 | Provided in these experiments by Prof. P. Krammer or can be purchased by ENZO | ALX-804-242-C100 | Dilution: 1:20 in PBST + 1:100 NaN<sub>3</sub> |
anti-CD95 Ab | Santa Cruz | sc-715 | Dilution: 1:2000 in PBST + 1:100 NaN<sub>3</sub> |
anti-c-FLIP NF6 Ab | Provided in these experiments by Prof. P. Krammer or can be purchased by ENZO | ALX-804-961-0100 | Dilution: 1:10 in PBST + 1:100 NaN<sub>3</sub> |
anti-FADD 1C4 Ab | Provided in these experiments by Prof. P. Krammer or can be purchased by ENZO | ADI-AAM-212-E | Dilution: 1:10 in PBST + 1:100 NaN<sub>3</sub> |
anti-PARP Ab | Cell signaling | 9542 | Dilution: 1:1000 in PBST + 1:100 NaN<sub>3</sub> |
APS | Carl Roth | 9592.3 | |
β-mercaptoethanol | Carl Roth | 4227.2 | |
Bradford solution Protein Assay Dye Reagent Concentrate 450ml | Bio Rad | 500-0006 | Used according to manufacturer's instructions |
CD95L | Provided in these experiments by Prof. P. Krammer or can be purchased by ENZO | ALX-522-020-C005 | |
Chemiluminescence detector Chem Doc XRS+ | Bio Rad | ||
Complete Protease Inhibitor Cocktail (PIC) | Sigma Aldrich | ALX-522-020-C005 | Prepared according to manufacturer's instructions |
DPBS (10x) w/o Ca, Mg | PAN Biotech | P04-53500 | Dilution 1:10 with H2O, storage in the fridge |
Electrophoresis buffer | Self-made | 10x electrophoresis buffer: 60.6 g Tris 288 g glycine 20 g SDS ad 2 L H<sub>2</sub>O 1:10 dilution before usage | |
Glycine | Carl Roth | 3908.3 | |
Goat Anti-Mouse IgG1 HRP | SouthernBiotech | 1070-05 | Dilution 1:10.000 in PBST + 5% milk |
Goat Anti-Mouse IgG2b HRP | SouthernBiotech | 1090-05 | Dilution 1:10.000 in PBST + 5% milk |
Goat Anti-Rabbit IgG-HRP | SouthernBiotech | 4030-05 | Dilution 1:10.000 in PBST + 5% milk |
Interleukin-2 Human (hIL-2) | Merckgroup/ Roche | 11011456001 | For activation of T cells |
KCl | Carl Roth | 6781.2 | |
KH<sub>2</sub>PO<sub>4</sub> | Carl Roth | 3904.1 | |
Loading buffer 4x Laemmli Sample Buffer, 10 mL | Bio Rad | 161-0747 | Prepared according to manufacturer's instructions |
Luminata Forte Western HRP substrate | Millipore | WBLUFO500 | |
Lysis buffer | Self-made | 13.3 mL Tris-HCl; pH 7.4; 1.5 M 27.5 mL NaCl; 5 M 10 mL EDTA; 2 mM 100 mL Triton X-100 add 960 mL H2O | |
Medium for adherent cells DMEM F12 (1:1) w stable Glutamine, 2,438 g/L | PAN Biotech | P04-41154 | Adding 10% FCS, 1% Penicillin-Streptomycin and 0.0001% Puromycin to the medium |
Medium for primary T cells | gibco by Life Technologie | 21875034 | Adding 10% FCS and 1% Penicillin-Streptomycin to the medium |
Milk powder | Carl Roth | T145.4 | |
Na<sub>2</sub>HPO<sub>4</sub> | Carl Roth | P030.3 | |
NaCl | Carl Roth | 3957.2 | |
PBST | Self-made | 20x PBST: 230 g NaCl 8 g KCl 56.8 g Na<sub>2</sub>HPO<sub>4</sub> 8 g KH<sub>2</sub>PO<sub>4</sub> Copyright © 2021 JoVE Journal of Visualized Experiments jove.com Page 3 of 3 20 mL Tween-20 ad 2 L H<sub>2</sub>O dilution 1:20 before usage | |
PBST + 5% milk | Self-made | 50 g milk powder + 1 L PBST | |
PHA | Thermo Fisher Scientific | R30852801 | For activation of T Cells |
Power Pac HC | Bio Rad | ||
Precision Plus Protein Standard All Blue | Bio Rad | 161-0373 | Use between 3-5 µL |
Protein A Sepharose CL-4B beads | Novodirect/ Th.Geyer | GE 17-0780-01 | Affinity resin beads prepared according to manufacturer's instructions |
Scraper | VWR | 734-2602 | |
SDS | Carl Roth | 4360.2 | |
Shaker | Heidolph | ||
Sodium azide | Carl Roth | K305.1 | |
TEMED | Carl Roth | 2367.3 | |
Trans Blot Turbo mini-size transfer stacks | Bio Rad | 170-4270 | Used according to manufacturer's instructions |
TransBlot Turbo 5x Transfer Buffer | Bio Rad | 10026938 | Prepared according to manufacturer's instructions |
TransBlot Turbo Mini-size nictrocellulose membrane | Bio Rad | 170-4270 | Used according to manufacturer's instructions |
Trans-Blot-Turbo | Bio Rad | ||
Tris | Chem Solute | 8,08,51,000 | |
Triton X-100 | Carl Roth | 3051.4 | |
Tween-20 | Pan Reac Appli Chem | A4974,1000 |