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7 protocols using lipid peroxidation mda assay

1

Lipid Peroxidation Assay Protocol

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MDA content was determined using MDA lipid peroxidation assay (Abcam) according to the manufacturer’s directions. For 4-HNE, Lipid Peroxidation (4-HNE) Assay Kit (Abcam) was used. Samples were homogenized in RIPA buffer with inhibitors and analyzed according to the manufacturer’s directions and represented as fold change of WT control.
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2

Oxidative Stress Biomarker Quantification

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All ROS assays were conducted according to the manufacturer’s directions. For ROS (OxiSelectTMIn Vitro ROS/RNS Assay Kit; Cell Biolabs, Inc.; San Diego, California) assays were conducted on tissue lysates from frozen tissue samples. Samples were weighted (10 mg/sample), homogenized in PBS and centrifuged (10,000 g, 5 min, 4°C). Following sample preparation, assays were conducted according to the manufacturer’s directions. MDA content was obtained using MDA lipid peroxidation assay (Abcam) according to the manufacturer’s directions. For 4-HNE, the OxiSelectTM 4-HNE Assay Kit (Cell Biolabs, Inc.) was used. Samples were homogenized in RIPA buffer with inhibitors and analyzed according to the manufacturer’s directions.
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3

Nanoparticle Characterization and Antioxidant Assays

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Dioleoylphosphatidylethanolamine (DOPE), cholesteryl hemisuccinate (CHEMS), 1,2-distearoyl-sn-glycero-3-phosphatidylethanol-amine-N-[methoxy(polyethylene glycol)-2000] (DSPE-PEG2000), were procured from Sigma-Aldrich (St. Louis, MO, USA). The benzo[a]pyrene (BaP), Annexin V-FITC/PI, DCFDA/H2DCFDA-Cellular ROS Assay kits, adenosine deaminase (ADA), lactate dehydrogenase (LDH), superoxide dismutase (SOD) assay, catalase (CAT) assay, lipid peroxidation (MDA) assay, gamma glutamyl transferase (GGT), glutathione peroxidase 1 (GPx1) assay, 5’-nucleotidase (CD73) activity assay, were procured from Abcam (Cambridge, USA).
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4

Colorectal Cancer Therapeutic Screening

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Distearoylphosphatidylcholine (DSPC), 1,2-distearoyl-sn-glycero-3-phosphatiylethanolamine-N-[methoxy(polyethyleneglycol)-2000] (DSPE-PEG2000) and cholesterol (Chol), doxorubicin, azoxymethane (AOM), and diallyl trisulfide (DATS) were purchased from Sigma-Aldrich (St. Louis, MO, USA). The adenosine deaminase (ADA), lactate dehydrogenase (LDH), superoxide dismutase (SOD) assay, catalase (CAT) assay, lipid peroxidation (MDA) assay, glutathione peroxidase 1 (GPx1) assay, gamma glutamyl transferase (GGT), 5′-nucleotidase (CD73) activity assay and cell cytotoxicity assay (CAA) kit, were procured from Abcam (Cambridge, MA, USA). Dulbecco’s modified Eagle medium (DMEM) was purchased from Santa Cruz Biotechnology Inc, Heidelberg, Germany. Foetal bovine serum (FBS), streptomycin/penicillin, amphotericin-B were procured from Life Technologies, USA. HT-29 (ATCC HTB-38) and RKO (ATCC CRL-2577) were commercially purchased ATCC (American Type Culture Collection), Manassas, VA, USA.
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5

Oxidative Stress Signaling Pathway

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NOS (ab106535, 30), NOX4 (ab154244, 67), Catalase (ab16731, 60), TRX (ab26320, 12), Bcl-2 (ab182858, 26), Cleaved Caspase-3 (ab2302, 17), Caspase-3 (ab13847, 17), Caspase-9 (ab202068, 46), Rho (ab40673, 21), Ras (ab52939, 21), Rac1 (ab33186, 21), p-MEKK1 (ab138662, 164), MEKK1 (ab212601, 164), p-MKK4 (ab52958, 44), MKK4 (ab33912, 44), JNK (ab208035, 48) and p-JNK (ab219584, 48) were purchased from Abcam. ROS/ Superoxide Detection Assay (ab ab186027), Superoxide Dismutase 1 ELISA (ab119520), Lipid Peroxidation (MDA) Assay (ab233471) and NADP/NADPH Assay (ab65349) were purchased from Abcam.
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6

Cardiac Triglyceride and Oxidative Stress

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Cardiac TG level was measured using Triglyceride Colorimetric Assay (Cayman Chemical) according to the supplier’s protocol. To assess the extent of oxidative stress, the levels of malondialdehyde (MDA) in heart tissue were measured using Lipid Peroxidation (MDA) Assay (Abcam) according to the supplier’s protocol. Values were normalized to frozen tissue weight.
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7

Evaluating Inflammatory Biomarkers

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The following drugs/kits were used: AB192 (bis(4acetamidophenyl)1-(S)-prolylpyrrolidine-2(R,S)-phosphonate, University Hospital Zurich, Zurich, Switzerland); LPD (Gibco Invitrogen, Grand Island, US); myeloperoxidase Assay Kit (ab111749, Abcam, Cambridge, UK); Lipid Peroxidation (MDA) Assay (ab118970, Abcam, Cambridge, UK); B2R rabbit polyclonal antibody (orb13265, Biorbyt Ltd, Cambridge, UK).
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