Related Experiment Video
Updated: Jul 16, 2026
06:35
A Mouse Model to Investigate the Role of Cancer-Associated Fibroblasts in Tumor Growth
Published on: December 22, 2020
ALKBH5 in Cancer-Associated Fibroblasts Governs an Epitranscriptomic Axis that Drives Pancreatic Cancer Metastasis
Xianglin Yin1, Xiao-Ding Liu1, Lulu Cheng1
1Peking Union Medical College Hospital Beijing China.
Cancer Research
|July 14, 2026
Summary
N6-methyladenosine (m6A) remodeling is key in pancreatic cancer-associated fibroblasts (CAFs). The m6A demethylase ALKBH5 in CAFs drives pancreatic ductal adenocarcinoma (PDAC) metastasis by regulating HSF1 and LIF signaling.
Area of Science:
- Oncology
- Molecular Biology
- Epigenetics
Background:
- Cancer-associated fibroblasts (CAFs) significantly influence pancreatic ductal adenocarcinoma (PDAC) progression.
- Understanding the regulatory mechanisms governing CAF function is crucial for targeting PDAC.
- N6-methyladenosine (m6A) RNA modification is increasingly recognized for its role in cancer.
Purpose of the Study:
- To investigate the role of m6A remodeling in CAF activation and PDAC metastasis.
- To define the function of the m6A demethylase ALKBH5 in the PDAC tumor microenvironment.
- To elucidate the molecular mechanisms by which CAFs promote PDAC progression.
Main Methods:
- Analysis of m6A abundance in activated CAFs.
- Functional studies using in vitro cell migration and invasion assays.
- Orthotopic co-implantation and host genetic ablation models in mice.
- Investigation of protein translation and gene expression changes (e.g., HSF1, LIF).
- Clinical correlation analysis of CAF markers with patient prognosis.
Main Results:
- Activated CAFs show global reduction in m6A levels, with ALKBH5 identified as a key regulator.
- CAF-derived ALKBH5 promotes PDAC cell migration, invasion, and epithelial-mesenchymal transition (EMT) in an m6A-dependent manner.
- ALKBH5 facilitates PDAC metastasis by enhancing HSF1 translation and activating LIF transcription in CAFs, establishing a pro-metastatic signaling axis.
- ALKBH5⁺HSF1⁺ CAFs are associated with poor prognosis and are enriched in metastatic PDAC.
Conclusions:
- A CAF-specific epitranscriptomic program regulated by ALKBH5 drives PDAC metastasis.
- The ALKBH5-HSF1-LIF signaling axis represents a critical CAF-tumor cell communication pathway promoting metastasis.
- Stromal m6A regulation, particularly involving ALKBH5, presents a potential therapeutic vulnerability in PDAC.
Related Concept Videos
02:30Metastasis
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
02:17The Tumor Microenvironment
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
02:38Mitogens and the Cell Cycle
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
01:35Cancer Cell Migration through Invadopodia
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However, invadopodia can...
02:53Adaptive Mechanisms in Cancer Cells
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...