Application of delinearized ubiquitin enzyme family with sequence similarity 105, member B (FAM105B) to liver cancer diagnosis, treatment and prognosis judgment

A FAM105B, ubiquitinase technology, applied in disease diagnosis, biochemical equipment and methods, medical preparations containing active ingredients, etc., can solve inflammatory factor secretion disorders, ubiquitin chains, abnormal activation of NF-κB and other problems to achieve the effect of increasing proliferation

Active Publication Date: 2020-09-22
王继龙 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In bone marrow-derived macrophages, the loss of FAM105B will lead to excessive production of Met1-linked ubiquitin chains, resulting in abnormal activation of NF-κB signaling and dysregulation of inflammatory cytokine secretion
However, whether FAM105B also participates in the regulation of the above-mentioned signaling pathways in liver cancer cells, and whether it plays a role in promoting the invasion and metastasis of liver cancer through the above-mentioned signaling pathways, needs further in-depth study.

Method used

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  • Application of delinearized ubiquitin enzyme family with sequence similarity 105, member B (FAM105B) to liver cancer diagnosis, treatment and prognosis judgment
  • Application of delinearized ubiquitin enzyme family with sequence similarity 105, member B (FAM105B) to liver cancer diagnosis, treatment and prognosis judgment
  • Application of delinearized ubiquitin enzyme family with sequence similarity 105, member B (FAM105B) to liver cancer diagnosis, treatment and prognosis judgment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Example 1: FAM105B is highly expressed in liver cancer tissues

[0103] 24 cases of fresh liver cancer tissues (HCC) and corresponding paracancerous tissues were detected by fluorescent real-time quantitative PCR (see Section 2 of the Experimental Materials and Methods for details) and western blot (see Section 3 of the Experimental Materials and Methods for details). (NT) and the expression levels of FAM105B mRNA and protein in 10 cases of portal vein tumor thrombus (PVTT).

[0104] The results showed that the expression levels of FAM105B mRNA and FAM105B protein in fresh liver cancer tissues were significantly higher than those in paracancerous tissues. It is worth noting that, compared with liver cancer tissues and adjacent tissues, the expression level of FAM105B is the highest in portal vein tumor thrombus tissues. For details, see figure 1 A and 1B.

[0105] Tissue chips containing 95 cases of liver cancer specimens were detected by immunohistochemical method (s...

Embodiment 2

[0109] Example 2: High expression of FAM105B indicates poor clinical outcome of patients with liver cancer

[0110] Combined with clinicopathological data and prognosis follow-up information of liver cancer patients, statistical analysis found that the expression level of FAM105B was correlated with tumor number (P=0.001), tumor capsule (P=0.019), microvascular invasion (P=0.020), and TNM stage (P=0.020). 0.011) and other adverse clinicopathological features were significantly correlated (see Table 1 for details).

[0111] Table 1. The relationship between the expression level of FAM105B in liver cancer tissues and the clinicopathological characteristics of patients

[0112]

[0113] Kaplan-Meier survival curve and Log-rank test were used for prognostic analysis, and the results showed that the overall survival time (Overall Survival, OS) and disease-free survival time (Disease-free Survival, DFS) of the FAM105B high expression group were significantly shorter than those of...

Embodiment 3

[0118] Example 3: In vitro experiments verify that FAM105B can significantly promote the proliferation, migration and invasion abilities of liver cancer cells

[0119] First, the fluorescence real-time quantitative PCR and western blot methods (see Section 2 and Section 3 of the test materials and test methods for details) were used to detect the effect of FAM105B on the immortalized normal liver cell line L02 and six liver cancer cell lines with different invasion potentials (including Expression levels in Huh7, Hep3B, PLC / PRF / 5, HCCLM3, SMMC7721 and HepG2). The results showed that the expression levels of FAM105B mRNA and FAM105B protein in the liver cancer cell line were significantly higher than those in the normal liver cell line L02 (see image 3 A and 3B).

[0120] Next, the liver cancer cell line HepG2 with low expression of FAM105B and low metastatic potential and the liver cancer cell line Hep3B with relatively high expression of FAM105B and high metastatic potentia...

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Abstract

The invention provides application of delinearized ubiquitin enzyme family with sequence similarity 105, member B (FAM105B) in liver cancer diagnosis, treatment and prognosis judgment. Various technical detection finds that the FAM105B is highly expressed in a liver cancer cell line and liver cancer tissue, and high expression of the FAM105B is positively correlated with adverse clinical pathological characteristics of a hepatocellular carcinoma (HCC) patient, a poor postoperative overall survival rate and a poor tumor-free survival rate; it is proved that high expression of the FAM105B in theliver cancer tissue is an independent risk factor influencing long-term survival of liver cancer patients; an in-vitro hepatoma cell model constructed by gene knockout and overexpression techniques finds that the FAM105B can promote the proliferation, migration and invasion abilities and epithelial-mesenchymal transition of hepatoma cells. The research findings indicate that the delinearized ubiquitin enzyme FAM105B can be used as a marker for developing a new liver cancer diagnosis and prognosis judgment kit, and an effective target is provided for preparing liver cancer treatment medicines.

Description

technical field [0001] The invention belongs to the field of biomedicine, and specifically relates to the application of a potential liver cancer marker delinear ubiquitinase FAM105B in the diagnosis, treatment and prognosis judgment of liver cancer. Background technique [0002] Hepatocellular carcinoma (HCC, hereinafter referred to as liver cancer) is the main pathological type of primary liver cancer, one of the most common malignant tumors in the world, and ranks second in the cause of cancer-related death. Liver cancer has a high incidence rate, poor prognosis, and a serious threat to human life and health. It has long been a difficult problem in the medical field. [0003] In recent years, although the improvement of liver surgical treatment technology and the development of comprehensive treatment methods such as local treatment, molecular targeted therapy, and immunotherapy have increased the 5-year survival rate of patients with liver cancer, due to the limited indi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6886G01N33/573G01N33/574A61K31/7088A61K45/00A61P35/00
CPCC12Q1/6886G01N33/573G01N33/57438A61K31/7088A61K45/00A61P35/00C12Q2600/118C12Q2600/158G01N2333/948G01N2800/52
Inventor 王继龙邓振沣文张郭雅金宗睿吴基华徐邦浩梁立洲何俊鑫李健覃勇辉吴国林韦明奇王维覃智曹恒王珏易麒麟宋经清叶春辉
Owner 王继龙
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