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Anti-skin squamous cell carcinoma medicament antagomir-365-2

A squamous cell carcinoma and skin technology, applied in the field of biomedicine, can solve the problems of difficult gene therapy, achieve good stability, inhibit invasion and metastasis, and inhibit the elimination of tumor mass

Inactive Publication Date: 2013-08-21
SOUTHERN MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the clinical treatment of skin cancer is still based on comprehensive treatments such as surgery, radiotherapy, and laser. Today, the post-genome project has been studied, and the pathogenic genes of skin cancer have been successfully confirmed at the molecular level. However, it is still a big problem how to find the targeted therapeutic gene of tumor and carry out gene therapy on it

Method used

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  • Anti-skin squamous cell carcinoma medicament antagomir-365-2
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  • Anti-skin squamous cell carcinoma medicament antagomir-365-2

Examples

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Embodiment 1

[0028] This example relates to the experiment of inhibiting the proliferation, invasion and migration of skin squamous cell carcinoma cells by the gene fragment of the present invention.

[0029] The following experiments were divided into groups: (1) negative control group; (2) antagomir-365-2 intervention group; the skin squamous cell carcinoma cell line A431 was used in the two experiments, and the proliferation, invasion and migration of tumor cells were detected after the intervention .

[0030] The plate colony formation assay was used to detect the proliferation ability of skin squamous cell carcinoma:

[0031] A431 cells with logarithmic growth and good condition were collected, washed 3 times with D-Hanks solution, digested with 0.25% (w / v) trypsin, and the cell suspension was blown repeatedly to fully disperse the cells, and the cell concentration was adjusted to (1~ 2)×10 6 / mL, inoculate into 12-well culture plate, add 100 μL of cell suspension to each well, ge...

Embodiment 2

[0040] This example relates to the experiment of directly injecting antagomir-365-2 into the tumor to inhibit the growth of the tumor and eliminate the tumor mass.

[0041] Establishment of animal model of skin squamous cell carcinoma: A431 cells of skin squamous cell carcinoma cell line (2×10 8 1), injected subcutaneously in the right back of BALB / c nude mice; tumors grew in 4-5 days, and the size of the tumors was calculated. (tumor size (mm 3 )=D×d 2 ×π / 6 (D is the longest diameter of the tumor, d is the shortest diameter of the tumor).

[0042] Experimental groups: (1) negative control group; (2) antagomir-365-2 intervention group.

[0043] Experimental animal modeling: A431 cells were subcutaneously injected into the right back of C57BL nude mice, and each nude mouse was injected with 2×10 8 The cells formed tumors after about 5 days. Intervention measures of antagomir-365-2 in the experimental intervention group: when the tumor mass in nude mice grows to 150 mm 3 ...

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Abstract

The invention discloses an anti-skin squamous cell carcinoma medicament, i.e., antagomir-365-2. The antagomir-365-2 is a chemically-modified antisense oligonucleotide of which the nucleotide sequence is shown as SEQIDNO:1 in which two continuous basic groups at a 5' end and four continuous basic groups at a 3' end are modified with thiophosphoric acid, the 3' tail end is marked with cholesterol, and all basic groups are modified through methylation. The anti-skin squamous cell carcinoma medicament, i.e., antagomir-365-2 disclosed by the invention can be enriched on a target cell by overcomingthe obstacles of cell membranes, tissues and the like, can directly enter cells cultured in vitro and in-vivo tumorigenesis tissues, is an ideal medicament for performing in-vitro and in-vivo skin squamous cell carcinoma treatment experiments, and can be used for effectively inhibiting invasion and transfer of tumor cells in vitro and effectively inhibiting growth of tumors and eliminating tumorsin vivo. The antagomir-365-2 disclosed by the invention has a remarkable resisting effect on skin squamous cell carcinoma, and is a target gene medicament for treating skin cancers.

Description

technical field [0001] The invention belongs to the field of biomedicine, and in particular relates to antagomir-365-2, an anti-squamous cell carcinoma drug of the skin. Background technique [0002] Skin cancer is one of the most common malignant tumors in the white race, and its incidence rate exceeds the sum of all other malignant tumors in the white race. In recent years, the incidence rate in our country has been increasing year by year and showing a younger age. According to projections from the original international agreement to limit ozone-depleting substances, the incidence of skin cancer in Northwest Europe and the United States could double by 2100, leading to a peak increase of 10% in 2060. [0003] At present, the clinical treatment of skin cancer is still based on comprehensive treatment such as surgery, radiotherapy, and laser. Today, the post-genome project has been studied, and the pathogenic genes of skin cancer have been successfully confirmed at the mole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K48/00A61K31/7115A61P35/00
Inventor 周美娟丁振华柳维林郑莉欧程山
Owner SOUTHERN MEDICAL UNIVERSITY
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