Related Experiment Videos

NSUN2-mediated m5C modification of E2F1 promotes lung adenocarcinoma progression via the RAD54L signaling axis

Yue Li1, Chen Chen1, HaiLin Liu1

  • 1Department of Lung Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Lung Cancer Center, Tianjin, 300060, China.

Respiratory Research
|July 4, 2026
PubMed

Insights

The RNA methyltransferase NSUN2 drives lung adenocarcinoma (LUAD) by enhancing E2F1 translation, which activates RAD54L. This NSUN2-E2F1-RAD54L axis is crucial for LUAD progression and presents a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • Lung adenocarcinoma (LUAD) is a major cause of cancer mortality.
  • Genomic alterations in cell cycle and DNA repair pathways are known drivers of LUAD.
  • The role of RNA epigenetics in LUAD pathogenesis is not well understood.

Purpose of the Study:

  • To identify novel RNA epigenetic mechanisms driving LUAD.
  • To elucidate the role of RNA methyltransferase NSUN2 in LUAD progression.
  • To investigate the NSUN2-E2F1-RAD54L signaling axis in LUAD.

Main Methods:

  • Analysis of NSUN2 amplification and expression in LUAD patient data.
  • Investigation of NSUN2-mediated m5C modification of E2F1 3'-UTR.
  • Assessment of YBX1 binding and E2F1 translation.
  • Evaluation of E2F1-driven RAD54L expression and function.
  • In vivo tumorigenesis assays and multi-omics integration.

Main Results:

  • NSUN2 is amplified and overexpressed in LUAD, correlating with advanced stage and poor survival.
  • NSUN2 catalyzes m5C modification on E2F1 3'-UTR, enhancing its translation via YBX1.
  • Increased E2F1 activates RAD54L, promoting LUAD cell proliferation, invasion, and tumorigenesis.
  • The NSUN2-E2F1-RAD54L axis is essential for LUAD malignancy.

Conclusions:

  • A novel epitranscriptomic-transcriptional cascade involving NSUN2, E2F1, and RAD54L drives LUAD.
  • This NSUN2-E2F1-RAD54L axis represents a critical oncogenic pathway in LUAD.
  • Targeting this axis offers a promising therapeutic strategy for LUAD.
Keywords:
5-MethylcytosineE2F1Lung adenocarcinomaNSUN2RAD54LYBX1

Related Concept Videos

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Mutations01:35

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...