application of lncRNA XR595534.2 in preparation of medicine for treating or preventing chronic pain

A chronic pain and drug technology, applied in the field of biotechnology and medicine, can solve the problems of prone to gastric bleeding, dependence and addiction, poor curative effect of chronic neuropathic pain, etc., and achieve the effect of alleviating the behavioral response of pain

Active Publication Date: 2021-04-30
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is only effective for mild to moderate pain, and serious side effects such as gastric bleeding are prone to occur after medication; the latter has a strong analgesic effect, but has poor curative effect on chronic neuropathic pain, and is accompanied by respiratory depression and constipation, especially after long-term use. Tolerance to its analgesic effects, which can lead to dependence and addiction

Method used

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  • application of lncRNA XR595534.2 in preparation of medicine for treating or preventing chronic pain
  • application of lncRNA XR595534.2 in preparation of medicine for treating or preventing chronic pain
  • application of lncRNA XR595534.2 in preparation of medicine for treating or preventing chronic pain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: High-throughput sequencing results show lncRNAs differentially expressed in TG tissues of CCI-ION model rats

[0027] (1) Infraorbital nerve chronic compression injury (CCI-ION) model

[0028] Adult male healthy Sprague-Dawley rats weighing 180–250 g were provided by the Experimental Animal Center of Soochow University. Sanitary approval document number of the Animal Center: SYXK (Su) 2007-0035. Before the experiment, the animals were allowed to adapt to the feeding environment for three days and underwent adaptive stimulation training. The model was established using routine laboratory practices: the rats were anesthetized by intraperitoneal injection of 4% chloral hydrate at a dose of 1 ml / 100 g, and the rats were fixed on the operating table in a supine position. The first molar level was incised with a sterile razor blade, and the surrounding tissue was carefully separated using a bluntly bent glass rod until the infraorbital nerve was exposed. The two...

Embodiment 2

[0034] Example 2: The expression of lncRNA XR_595534.2 in TG tissue of CCI-ION model rats was significantly increased by fluorescence quantitative PCR

[0035] (1) establishment of infraorbital nerve chronic compression injury (CCI-ION) model (same as embodiment 1)

[0036] (2) Real-time fluorescent quantitative PCR

[0037] RNA extraction: Rat TG was extracted using sterilized equipment, placed in a 1.5 ml sterilized centrifuge tube, 1 ml Trizol was added, the tissue was broken into a homogenate, and placed on ice for 30 minutes. Add 100 microliters of chloroform, and centrifuge in a centrifuge at 4 degrees and 12000 rpm for 20 minutes. Aspirate the upper aqueous phase into a new centrifuge tube, add an equal volume of isopropanol and place it in the refrigerator at -20°C for 20 minutes. Centrifuge at 12,000 rpm for 15 minutes at 4°C in a centrifuge, discard the supernatant, and add 75% ethanol to wash the precipitate. Centrifuge at 4°C at 7500 rpm for 5 minutes, discard the...

Embodiment 3

[0040] Example 3: siRNA interference sequence can effectively reduce the expression of lncRNA XR_595534.2 in TG of CCI-ION model rats

[0041] (1) RNA extraction (same as Example 2).

[0042] (2) Real-time fluorescent quantitative PCR (same as Example 2).

[0043] (3) Stereotaxic injection of siRNA interference sequence into rat TG: After the rat was anesthetized, it was fixed on the brain stereotaxic apparatus, and the scalp was incised with a scalpel. 2 o 2 The tissue is corroded, exposing the coronal and sagittal sutures. Use the point of intersection of the two, namely bregma, as the origin: bregma is 3 mm backward, 3 mm to the left of the midline, and 11.7 mm below the surface of the skull. Inject lncRNA XR_595534.2 siRNA (lncRNA-siRNA) and control siRNA (NC-siRNA) (purchased from Gemma Gene), the final injection concentration is 50 micromole / liter, and each rat is injected with 3 microliters, and the injection is completed in 5 minutes. Leave the needle for 10 minute...

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Abstract

The invention discloses an application of lncRNA (long non-coding ribonucleic acid) XR595534.2 in preparation of a medicine for treating or preventing chronic pain. According to the invention, trigeminal neuralgia induced by rat suborbital nerve chronic compression injury is taken as a pain model, a long-chain non-coding RNA gene lncRNA XR595534.2 with high specificity and difference expression in the model is obtained by screening, and interfering RNA for treating diseases taking lncRNA XR59534.2 as a target point is provided. The lncRNA XR595534.2 highly expressed in specificity and difference in a pain model is discovered for the first time, expression of the lncRNA XR59534.2 can be remarkably reduced by positioning injection of interfering RNA, pain behavior reaction is relieved, and the lncRNA XR595534.2 can be used for preparing medicines for preventing or treating prosopalgia, neuropathic pain, migraine and cancer pain.

Description

technical field [0001] The invention relates to the fields of biotechnology and medicine, in particular to the application of lncRNA XR_595534.2 in the preparation of medicines for treating or preventing chronic pain. Background technique [0002] Chronic pain (such as trigeminal neuralgia, migraine, neuropathic pain, cancer pain, etc.) is a chronic disease that seriously endangers human physical and mental health and quality of life. Its characteristics make patients suffer for a long time, and can induce malignant emotions or mental abnormalities such as anxiety, depression and fear, and even cause suicidal tendencies in individuals, seriously endangering the life and quality of life of patients. Among the many preparations that can relieve pain, according to the pharmacological mechanism, they can be mainly divided into two categories: non-steroidal anti-inflammatory analgesics and opioid receptor agonists. The former is only effective for mild to moderate pain, and seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K31/713A61K45/00A61P25/02A61P25/06C12N15/113
CPCA61K31/713A61K45/00A61P25/02A61P25/06C12N15/113C12N2310/14A61P25/04C12N2310/113C12N2330/10C12N15/11
Inventor 陶金齐任飞张园孙玉芳汤顺蒋星红
Owner SUZHOU UNIV
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