Related Experiment Video
Updated: Jul 3, 2026
Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
Published on: April 20, 2018
Molecular signatures of metastasis in head and neck cancer
Stefano Colella1, Kristy L Richards, Linda L Bachinski
1Department of Cancer Genetics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA.
Background:
Metastases are the primary cause of cancer treatment failure and death, yet metastatic mechanisms remain incompletely understood.
Methods:
We studied the molecular basis of head and neck cancer metastasis by transcriptionally profiling 70 samples from 27 patients-matching normal adjacent tissue, primary tumor, and cervical lymph node metastases.
Results:
We identified tumor-associated expression signatures common to both primary tumors and metastases. Use of matching metastases revealed an additional 46 dysregulated genes associated solely with head and neck cancer metastasis. However, despite being metastasis-specific in our sample set, these 46 genes are concordant with genes previously discovered in primary tumors that metastasized.
Conclusions:
Although our data and related studies show that most of the metastatic potential appears to be inherent to the primary tumor, they are also consistent with the notion that a limited number of additional clonal changes are necessary to yield the final metastatic cell(s), albeit in a variable temporal order.
Insights
Understanding cancer metastasis is key to improving treatment outcomes. This study reveals that while primary tumors hold most metastatic potential, a few additional genetic changes are necessary for metastasis to occur.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Metastasis is a leading cause of cancer mortality.
- The molecular mechanisms driving metastasis are not fully understood.
Purpose of the Study:
- To investigate the molecular underpinnings of head and neck cancer metastasis.
- To identify genetic alterations associated with tumor spread.
Main Methods:
- Transcriptional profiling of 70 patient samples.
- Analysis included normal adjacent tissue, primary tumors, and lymph node metastases.
Main Results:
- Identified common tumor-associated expression signatures in primary tumors and metastases.
- Discovered 46 dysregulated genes specific to head and neck cancer metastasis.
- These metastasis-specific genes were also found in primary tumors that had metastasized.
Conclusions:
- Most metastatic potential originates from the primary tumor.
- Limited additional clonal genetic changes are required for metastasis.
- These changes can occur in a variable temporal sequence.
