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核心技术专利:CN118964589B侵权必究
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一种新型长链非编码 RNA LOC101928222 通过稳定 HMGCS2 mRNA 并增加胆固醇合成促进结直肠癌血管生成。

A novel lncRNA LOC101928222 promotes colorectal cancer angiogenesis by stabilizing HMGCS2 mRNA and increasing cholesterol synthesis.

机构信息

Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.

Department of Oncology, Lianshui County People's Hospital, Affiliated Hospital of Kangda college, Nanjing Medical University, Huaian, Jiangsu, China.

出版信息

J Exp Clin Cancer Res. 2024 Jul 4;43(1):185. doi: 10.1186/s13046-024-03095-8.


DOI:10.1186/s13046-024-03095-8
PMID:38965575
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11223299/
Abstract

BACKGROUND: Metastasis is the leading cause of mortality in patients with colorectal cancer (CRC) and angiogenesis is a crucial factor in tumor invasion and metastasis. Long noncoding RNAs (lncRNAs) play regulatory functions in various biological processes in tumor cells, however, the roles of lncRNAs in CRC-associated angiogenesis remain to be elucidated in CRC, as do the underlying mechanisms. METHODS: We used bioinformatics to screen differentially expressed lncRNAs from TCGA database. LOC101928222 expression was assessed by qRT-PCR. The impact of LOC101928222 in CRC tumor development was assessed both in vitro and in vivo. The regulatory mechanisms of LOC101928222 in CRC were investigated by cellular fractionation, RNA-sequencing, mass spectrometric, RNA pull-down, RNA immunoprecipitation, RNA stability, and gene-specific m6A assays. RESULTS: LOC101928222 expression was upregulated in CRC and was correlated with a worse outcome. Moreover, LOC101928222 was shown to promote migration, invasion, and angiogenesis in CRC. Mechanistically, LOC101928222 synergized with IGF2BP1 to stabilize HMGCS2 mRNA through an m6A-dependent pathway, leading to increased cholesterol synthesis and, ultimately, the promotion of CRC development. CONCLUSIONS: In summary, these findings demonstrate a novel, LOC101928222-based mechanism involved in the regulation of cholesterol synthesis and the metastatic potential of CRC. The LOC101928222-HMGCS2-cholesterol synthesis pathway may be an effective target for diagnosing and managing CRC metastasis.

摘要

背景:转移是结直肠癌(CRC)患者死亡的主要原因,而血管生成是肿瘤侵袭和转移的关键因素。长链非编码 RNA(lncRNA)在肿瘤细胞的各种生物学过程中发挥调节作用,然而,lncRNA 在 CRC 相关血管生成中的作用以及潜在机制在 CRC 中仍有待阐明。

方法:我们使用生物信息学从 TCGA 数据库中筛选差异表达的 lncRNA。通过 qRT-PCR 评估 LOC101928222 的表达。在体外和体内评估 LOC101928222 在 CRC 肿瘤发展中的作用。通过细胞分离、RNA 测序、质谱、RNA 下拉、RNA 免疫沉淀、RNA 稳定性和基因特异性 m6A 测定研究 LOC101928222 在 CRC 中的调控机制。

结果:LOC101928222 在 CRC 中表达上调,与预后不良相关。此外,LOC101928222 被证明可促进 CRC 的迁移、侵袭和血管生成。在机制上,LOC101928222 与 IGF2BP1 协同作用,通过 m6A 依赖途径稳定 HMGCS2 mRNA,导致胆固醇合成增加,最终促进 CRC 的发展。

结论:总之,这些发现表明了一种新的基于 LOC101928222 的机制,涉及胆固醇合成和 CRC 转移潜能的调节。LOC101928222-HMGCS2-胆固醇合成途径可能是诊断和管理 CRC 转移的有效靶点。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/9363d628aa8e/13046_2024_3095_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/7a25574179bc/13046_2024_3095_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/3e8ed05fbfcb/13046_2024_3095_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/d4e406a5a561/13046_2024_3095_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/53dec3f0c250/13046_2024_3095_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/ef4bd35af358/13046_2024_3095_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/6166dfaa46ec/13046_2024_3095_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/8fe63ae4008d/13046_2024_3095_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/9363d628aa8e/13046_2024_3095_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/7a25574179bc/13046_2024_3095_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/3e8ed05fbfcb/13046_2024_3095_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/d4e406a5a561/13046_2024_3095_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/53dec3f0c250/13046_2024_3095_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/ef4bd35af358/13046_2024_3095_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/6166dfaa46ec/13046_2024_3095_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/8fe63ae4008d/13046_2024_3095_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e96e/11223299/9363d628aa8e/13046_2024_3095_Fig8_HTML.jpg

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[6]
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本文引用的文献

[1]
LncRNA SNHG4 promotes prostate cancer cell survival and resistance to enzalutamide through a let-7a/RREB1 positive feedback loop and a ceRNA network.

J Exp Clin Cancer Res. 2023-8-18

[2]
Lnc‑RGS5 sponges miR‑542‑5p to promote FoxM1/VEGFA signaling and breast cancer cell proliferation.

Int J Oncol. 2023-10

[3]
m6A-regulated tumor glycolysis: new advances in epigenetics and metabolism.

Mol Cancer. 2023-8-15

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Down-regulated FTO and ALKBH5 co-operatively activates FOXO signaling through m6A methylation modification in HK2 mRNA mediated by IGF2BP2 to enhance glycolysis in colorectal cancer.

Cell Biosci. 2023-8-14

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Genes Dis. 2022-8-5

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Correction: Oncofetal protein IGF2BPs in human cancer: functions, mechanisms and therapeutic potential.

Biomark Res. 2023-7-21

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J Exp Clin Cancer Res. 2023-7-18

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Long noncoding RNA LINC01594 inhibits the CELF6-mediated splicing of oncogenic CD44 variants to promote colorectal cancer metastasis.

Cell Death Dis. 2023-7-14

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