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4 protocols using caco 2

1

Culture and Maintenance of CRC Cell Lines

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Human CRC cell lines SW480, SW620, HT29, Colo205, Caco-2 and HCT116 were purchased from Shanghai Zhong Qiao Xin Zhou Biotechnology Co.,Ltd (Shanghai, China). Caco-2, SW620 and Colo205 cells were cultured in RPMI-1640 medium supplemented with 10% fetal bovine serum (FBS), HCT116 cells were cultured in DMEM medium supplemented with 10% FBS, HT29 were cultured in McCoy’s 5A medium supplemented with 10% FBS, SW480 were cultured in Leibovitzs L-15 medium supplemented with 10% FBS. All types of culture mediums were purchased from Shanghai Zhong Qiao Xin Zhou Biotechnology Co., Ltd. All CRC cells were maintained in an incubator under the condition of 5% CO2 at 37°C.
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Culturing of Colorectal Cancer Cell Lines

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CC cells, including SW480, Colo-205, SW620, HCT15, DLD-1, HCT116, Caco-2, RKO and LOVO were bought from Shanghai Zhong Qiao Xin Zhou Biotechnology. SW480 and SW620 were cultured in a complete DMEM medium supplemented with 10% FBS (Gibco Grand Island, NY, USA). Colo-205, HCT15 and DLD-1 cells in a complete RPMI-1640 medium supplemented with 10% FBS. Caco-2 and RKO cells in a complete EMEM medium supplemented with 10% FBS. HCT116 cells in a complete Mccoy’s 5A medium supplemented with 10% FBS. LOVO cells in a complete F-12K medium supplemented with 10% FBS. All the experimental procedures described below were repeated thrice unless described otherwise.
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Exploring Colorectal Cancer Cell Lines

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The human colorectal adenocarcinoma cancer cell lines Caco-2 and CX-1 were purchased from Shanghai Zhong Qiao Xin Zhou Biotechnology Co., Ltd. Caco-2 and CX-1 cells were grown in Dulbecco’s modified Eagle’s medium (DMEM) and RPMI 1640 (Gibco, Thermo Fisher Scientific), respectively, supplemented with 10% fetal bovine serum (BI, Israel) and 1% penicillin/streptomycin (PEN/STREP 100×, MILLIPORE, USA). Cells were cultured at 37°C in a 5% CO2 and 95% air humidified incubator. Stocks of SAL (S4526, Sigma-Aldrich, USA) and SFN (S4441, Sigma-Aldrich, USA) were prepared via dissolution in dimethyl sulfoxide (DMSO, D2650, Sigma-Aldrich, USA) at concentrations of 50 mM and 100 mM, respectively, and the solutions were stored at −20°C. The final concentration of DMSO was less than 0.1%. Antibodies against PI3K (1:1000 dilution), Akt (1:1000 dilution), phosphorylated Akt (Ser473) (1:1000 dilution), p53 (1:1000 dilution), cleaved poly ADP-ribose polymerase (PARP) (1:1000 dilution), and β-actin (1:1000 dilution) as well as the PI3K inhibitor LY294002 were purchased from Cell Signaling Technology. Antibodies against Bcl-2 (1:100 dilution) and Bax (1:100 dilution) were obtained from Santa Cruz Biotechnology.
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Colorectal Cancer Cell Line Manipulation

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The human colorectal adenocarcinoma cell lines (Caco-2 and HT-29) were purchased from Shanghai Zhongqiao Xinzhou Biotechnology Co., Ltd. and maintained in DMEM medium (BasalMedia, Shanghai, China) supplemented with 10% FBS (Thermo Fisher Scientific, Waltham, MA, United States) and incubated at 5% CO2 at 37°C.
The MMP9 sequence was synthesized by General Biol and then inserted into the pCDH-CMV-MCS-EF1-copGFP-T2A-Puro lentiviral expression vector plasmids (General Biol, Anhui, China), called MMP9 OE plasmids. In addition, lentivirus-containing shRNA targeting MMP9 (MMP9 shRNA1: 5′-GGA​ATA​CCT​GTA​CCG​CTA​TGG-3′, MMP9 shRNA2: 5′- GCA​GAC​ATC​GTC​ATC​CAG​TTT​C-3′ and MMP9 shRNA3: 5′-GCT​TAG​ATC​ATT​CCT​CAG​TGC-3′) were synthesized by GenePharma (Shanghai, China). After that, 293T cells were transfected with indicated lentiviral plasmids, packaging plasmids (pAX2) and envelope plasmid (pMD2. G) for 72 h. Next, virus-containing supernatants was filtered through a filter membrane (0.22 μm pore size), and then transduced into Caco-2 and HT-29 cells. Later on, the infected cells were selected by puromycin.
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