Selectiveincorporation of conformational constraintsinto thyclotidescan be used to modulate their binding to complementary oligonucleotides,increase polarity, and optimize uptake into HCT116 cells without assistancefrom moieties known to promote cell uptake. The X-ray structure andbiophysical studies of a thyclotide-DNA duplex reveal thatincorporation of tetrahydrofurans into an aegPNAbackbone promotes a helical conformation that enhances binding tocomplementary DNA and RNA. Selective incorporation of tetrahydrofuransinto the aegPNA backbone allows polarity to be increasedincrementally so that uptake into HCT116 cells can be optimized. Theenhanced binding, polarity, and cellular uptake properties of thyclotideswere used to demonstrate effective inhibition of microRNA-21 in HCT116cells.
机构:
Indian Inst Sci Educ & Res, Chem Biol Unit, Pune 411008, Maharashtra, IndiaIndian Inst Sci Educ & Res, Chem Biol Unit, Pune 411008, Maharashtra, India
机构:
Toronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, CanadaToronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, Canada
Yang, Hong
Fung, Shan-Yu
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Toronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, CanadaToronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, Canada
Fung, Shan-Yu
Liu, Mingyao
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Toronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, Canada
Univ Toronto, Fac Med, Dept Surg, Toronto, ON M5G 2C4, CanadaToronto Gen Res Inst, Univ Hlth Network, Latner Thorac Surg Res Labs, Toronto, ON M5G 1L7, Canada
机构:
Korea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South KoreaKorea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South Korea
Kim, Kwang Seok
Choi, Kyu Jin
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Korea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South KoreaKorea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South Korea
Choi, Kyu Jin
Bae, Sangwoo
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Korea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South KoreaKorea Inst Radiol & Med Sci, Div Radiat Effects, 75 Nowon Gil, Seoul 139706, South Korea