Application of 22 (R)-hydroxycholesterol as PARP1 inhibitor
A technology of hydroxycholesterol and inhibitor, applied in the field of medicine
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Embodiment 1
[0026] Example 1 Detection by Cell-Free PARP1 Enzymatic Reaction System
[0027] The PARP1 activity detection kit was used to construct a cell-free PARP1 enzymatic reaction system, which can activate the activity of PARP1 enzyme in vitro.
[0028] The PARP1 activity detection kit used in the examples was purchased from Trevigen, produced in the United States, with a model number of 4676-096-K.
[0029] PARP1 activity detection kit includes buffer, PARP1 recombinant protein, NAD + , single-strand break DNA, recombinant histone 1 (HistoneH1).
[0030] Configure the cell-free PARP1 enzymatic reaction system according to the PARP1 activity detection kit, the specific operation steps are as follows: add 50ng PARP1 recombinant protein (PARP1protein) to the buffer solution, the final concentration is 10mmol / LNAD + , The final concentration is 20mg / mL after single-strand break DNA. The final concentrations of the various components that make up the buffer solution in the reaction s...
Embodiment 2
[0037] Embodiment 2 Utilizes in vitro cell experiment detection
[0038] In the in vitro cell experiment, HepG2 (derived from American Type Culture Collection) cells were selected as experimental cells. The inventors treated HepG2 cells with different concentrations of 22(R)-hydroxycholesterol (abbreviated as 22(R)-HC). For treatment methods, see HuangD, YangC, WangY, LiaoY, & HuangK. PARP-1 suppresses adiponectin expression through poly(ADP-ribosyl)ation of PPARgammaincardiacfibroblasts. Cardiovascularresearch, 2009, 81(1): 98-107.
[0039] HepG2 cells were stimulated with 22(R)-hydroxycholesterol (i, 0.5 μmol / L, 1 μmol / L, 3 μmol / L) or nicotinic acid (iv, 1 μmol / L, 5 μmol / L, 10 μmol / L) for 24 hours. The concentrations in brackets are the final concentrations.
[0040] PARP1 activity was detected using a PARP1 activity detection kit (purchased from Trevigen, produced in the United States, model number 4676-096-K). For specific methods, refer to the instructions of the kit. ...
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