Functions and application of SHPS1 in treatment of post-vascular injury restenosis
A vascular injury and restenosis technology, applied in the field of gene function and application, can solve problems such as blood vessels affecting the treatment effect
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Embodiment 1
[0036] Example 1 Mouse Vascular Injury Model (VI) Obtained
[0037] 1. Grouping of experimental animals: WT and SHPS1-KO mice aged 8-10 weeks and weighing 24-27g were used and divided into two groups: WT vascular injury group and SHPS1-KO vascular injury group, with 20 mice in each group. mouse. The mice were sacrificed 28 days after the operation, and blood vessels in the injured segment were collected for analysis.
[0038] 2. Operation procedure of mouse vascular injury model:
[0039] 1) Accurately weigh the body weight (g) of the mouse in dynamic mode with an electronic balance, accurately prepare 3% pentobarbital sodium solution with double distilled water, shake gently to dissolve it fully, and use 80mg / kg body weight dose to calculate Accurately extract the corresponding volume of pentobarbital sodium solution with a 1mL syringe, and intraperitoneally inject the anesthetized mouse. After the mouse is fully anesthetized (about 3 minutes), 8% sodium sulfide is used to ...
Embodiment 2
[0044] Example 2 Determination of Intimal Neogenesis in Vascular Injury Model (VI) Mice
[0045] 1. Mice Harvesting
[0046] 1) Anesthetize the mouse, cut the heart and let the blood out.
[0047] 2) Cut the carotid artery from the proximal bifurcation of the carotid artery, take 0.5-0.6cm long, and keep the external carotid artery knot.
[0048] 3) Put the carotid artery in PBS, and gently drain the residual blood in the lumen with micro forceps.
[0049] 4) Put the blood vessel into a 1.5mL EP tube filled with 1mL 4% paraformaldehyde for fixation.
[0050] 2. Pathological detection
[0051] 2.1 Preparation of paraffin specimen slices
[0052] Paraffin specimen slices are prepared by professional pathologists in the laboratory. The main operating procedures include: after overnight fixation in 4% paraformaldehyde, carefully wrap the blood vessel with filter paper, put it into the embedding frame→rinse with running water→dehydration→transparency→wax immersion →embedding→s...
Embodiment 3
[0060] Example 3 Detection of proliferation level of blood vessel wall cells
[0061] The expressions of proliferating cell nuclear antigen (PCNA) and cell cycle protein (Cyclin D1) were detected by immunofluorescence staining. Required primary antibody information: PCNA (#2586; 1:100; mouse; Cell Signaling Technology), cyclin D1 (#2978; 1:25; rabbit; Cell Signaling Technology); required secondary antibody information: Alexa Fluor 568-conjugated goat anti-rabbit IgG (A11011; Invitrogen, Carlsbad, CA), Alexa Fluor 568-conjugated goat anti-mouse IgG (A11004; Invitrogen, Carlsbad, 150 d, CA).
[0062] The main steps are:
[0063] 1) Baked slices: put the paraffin slices in an oven at 55°C for more than 30 minutes.
[0064] 2) Dewaxing: Xylene 5min×3.
[0065] 3) Hydration: 100% ethanol 5min×2; 95% ethanol 5min; 70% ethanol 5min; ddH 2 O dipping for 5min×2.
[0066] 4) Citrate tissue antigen repair (high pressure repair): Take a certain amount of pH6.0 citrate antigen repair ...
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