HER2 (Human Epidermal Growth Factor Receptor 2) protein nucleotide aptamer, complex, composition and applications thereof
A nucleic acid aptamer and complex technology, which is used in drug combinations, pharmaceutical formulations, recombinant DNA technology, etc.
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[0038] 1. Materials and methods
[0039] Reagent
[0040] Single-stranded oligonucleotides were synthesized by Invitrogen. Peptides were purchased from Beijing Saibaisheng Company. HER2 protein was purchased from Beijing Yiqiao Sino Biotechnology Co., Ltd., item number: 10004-H08H. Bovine serum albumin was purchased from Tianjin Haoyang Biotechnology Co., Ltd. Monodisperse magnetic beads and streptavidin-coated magnetic beads were purchased from Promega. EDC was purchased from Sigma Corporation.
[0041] cell line
[0042] Human breast cancer cells MCF7, MDA-MB-231, MDA-MB-453, SK-BR-3, and human normal liver cells L02 were purchased from the Cell Center of the Chinese Academy of Medical Sciences. The cells were cultured in DMEM high-glucose medium containing 10% FBS, regular concentrations of penicillin and streptomycin (manufacturer: Beijing Yingxin Sunshine Biotechnology Co., Ltd., item number: 07-021, trade name: DMEM high-glucose medium). cells at 37°C, 5% CO 2 cu...
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