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Related Concept Videos

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Regulation of Nuclear Protein Sorting

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Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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Related Experiment Video

Updated: Sep 16, 2025

LDL Cholesterol Uptake Assay Using Live Cell Imaging Analysis with Cell Health Monitoring
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RPL6 Interacts with HMGCS1 to Stabilize HIF-1α by Promoting Cholesterol Production in Hepatocellular Carcinoma.

Minli Yang1,2, Shengtao Cheng1, Huiying Gu1,3

  • 1Department of Infectious Diseases, Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 12, 2025
PubMed
Summary

Researchers identified key biomarkers for early liver cancer (HCC) metastasis. 60S ribosomal protein L6 (RPL6) promotes tumor spread by affecting cholesterol and HIF-1α pathways, offering new targets for treatment.

Keywords:
HMGCS1RPL6cholesterolhepatocellular carcinomametastasis

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Cell Type-specific Gene Expression Profiling in the Mouse Liver
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Area of Science:

  • Oncology
  • Molecular Biology
  • Genomics

Background:

  • Early detection of hepatocellular carcinoma (HCC) metastasis is crucial for effective treatment.
  • Predictive markers for the premetastatic phase are needed for timely intervention.

Purpose of the Study:

  • To identify biomarkers for predicting the premetastatic phase in HCC.
  • To elucidate the molecular mechanisms driving HCC metastasis.

Main Methods:

  • Dynamic Network Biomarker (DNB) analysis of time-series transcriptomic data from an HCC mouse model.
  • In vitro and in vivo experiments to assess the role of RPL6 in HCC metastasis.
  • Investigation of the RPL6-HMGCS1-HIF-1α signaling axis.

Main Results:

  • The premetastatic phase in the HCC model was identified at week four.
  • 142 DNB genes were found to be important biomarkers for HCC metastasis, with RPL6 identified as a core member.
  • RPL6 promotes HCC invasion and metastasis by increasing HMGCS1 stability, elevating cholesterol, and activating the HIF-1α pathway.

Conclusions:

  • The RPL6-HMGCS1-HIF-1α axis plays a significant role in HCC pulmonary metastasis.
  • RPL6 is a potential prognostic biomarker and therapeutic target for HCC patients.
  • This study provides novel insights into the dynamic transcriptome changes during HCC metastasis.