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5 protocols using nuclear cytosolic fractionation kit

1

Glucose Uptake and Insulin Signaling Pathway

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Trilobatin, palmitate, DAPI and (2-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino)-2-deoxyglucose (2NBDG) uptake measurement kits were purchased from Sigma (St. Louis, MO, USA). IRS1, p-IRS1 (Ser 612), p-IRS1 (Ser 307), Akt, p-Akt (Ser 473), p-Akt (thr308), Na, K-ATPase, MYH1, MYOD1, and β-actin primary antibodies were bought from Cell Signaling Technology (Danvers, MA, USA). GLUT4 antibody was obtained from Abcam (Cambridge, MA, USA). HRP-conjugated GAPDH primary antibody was purchased from Aksmics (shanghai, China), Specific anti-mouse and anti-rabbit HRP-conjugated second antibodies were obtained from Santa Cruz Biotechnology (Texas, CA, USA). Rat/mouse insulin ELISA kits (EZRMI-13K) and ECL chemiluminescence detection reagent were obtained from Millipore (Billerica, MA, USA). Plasma membrane protein extraction kit, nuclear/cytosolic fractionation kit, RIPA buffer and BCA protein assay kit and other chemicals were purchased from Beyotime (Shanghai, China).
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2

Subcellular Fractionation of IEC-6 Cells

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Subfractionation was performed using a Nuclear/Cytosolic Fractionation Kit (Beyotime, Wuhan, China). IEC-6 cultures were washed with ice-cold PBS, scraped from the plates, and collected. After centrifugation, the supernatant was discarded, and the cells were suspended with Cytosol Extraction Buffer containing DTT/protease inhibitors, incubated on ice for 10 min, and Cell Lysis Reagent was added. The nuclei fraction was fractioned at 800 × g for 10 min. The supernatant was further centrifuged at 12 000 × g for 10 min, and the final supernatant was collected for cytoplasmic fraction. The nuclei pellet was washed and resuspended with Nuclear Extraction Buffer containing DTT/protease inhibitors.
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3

Insulin Signaling and Glucose Uptake Assay

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Trilobatin, palmitate, DAPI and (2-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino)-2-deoxyglucose (2NBDG) uptake measurement kits were purchased from Sigma (St Louis, MO, USA). IRS1, p-IRS1 (Ser 612), p-IRS1 (Ser 307), Akt, p-Akt (Ser 473), p-Akt (thr308), Na,K-ATPase, MYH1, MYOD1, and β-actin primary antibodies were bought from Cell Signaling Technology (Danvers, MA, USA). GLUT4 antibody was obtained from Abcam (Cambridge, MA, USA). HRP-conjugated GAPDH primary antibody was purchased from Aksmics (shanghai, China), Speci c anti-mouse and anti-rabbit HRP-conjugated second antibodies were obtained from Santa Cruz Biotechnology (Texas, CA, USA). Rat/mouse insulin ELISA kits (EZRMI-13K) and ECL chemiluminescence detection reagent were obtained from Millipore (Billerica, MA, USA). Plasma membrane protein extraction kit, nuclear/cytosolic fractionation kit, RIPA buffer and BCA protein assay kit and other chemicals were purchased from Beyotime (Shanghai, China).
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4

Glucose Uptake and Insulin Signaling

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Trilobatin, palmitate, DAPI and (2-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino)-2-deoxyglucose (2NBDG) uptake measurement kits were purchased from Sigma (St Louis, MO, USA). IRS1, p-IRS1 (Ser 612), p-IRS1 (Ser 307), Akt, p-Akt (Ser 473), p-Akt (thr308), Na,K-ATPase, MYH1, MYOD1, and β-actin primary antibodies were bought from Cell Signaling Technology (Danvers, MA, USA). GLUT4 antibody was obtained from Abcam (Cambridge, MA, USA). HRP-conjugated GAPDH primary antibody was purchased from Aksmics (shanghai, China), Speci c anti-mouse and anti-rabbit HRP-conjugated second antibodies were obtained from Santa Cruz Biotechnology (Texas, CA, USA). Rat/mouse insulin ELISA kits (EZRMI-13K) and ECL chemiluminescence detection reagent were obtained from Millipore (Billerica, MA, USA).
Plasma membrane protein extraction kit, nuclear/cytosolic fractionation kit, RIPA buffer and BCA protein assay kit and other chemicals were purchased from Beyotime (Shanghai, China).
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5

Subcellular Protein Fractionation Protocol

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To measure the expression of BAX, cytochrome C, and cleaved PARP in the mitochondria and the cytosol, mitochondrial and cytosolic proteins were isolated using a mitochondrial/cytosol fractionation kit (Beyotime Biotechnology, Inc., Beijing, China). The cytosolic and nuclear proteins were obtained using a nuclear/cytosolic fractionation kit (Beyotime Biotechnology, Inc., Beijing, China). In brief, cells were collected by trypsinization at the indicated times, washed with PBS, incubated with ice-cold cytosolic separation buffer, agitated and lysed on ice for 15 min. The cytosolic, nuclear and mitochondrial fractions were then harvested by a series of centrifugation steps in accordance with the manufacturer's instructions.
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