Hallmarks of cancer
Pro Research Analysisby 
Searched over 200M research papers
Defining the Hallmarks of Cancer: Key Biological Capabilities
The hallmarks of cancer are a set of fundamental biological traits that most cancers acquire during their development. These hallmarks help explain how normal cells transform into malignant tumors and provide a framework for understanding cancer’s complexity. The original hallmarks include: sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis (formation of new blood vessels), and activating invasion and metastasis (spread to other tissues) Hanahan2011Compton2020Abbott2006.
Expanding the Hallmarks: New Dimensions and Emerging Traits
Over time, researchers have recognized additional hallmarks and enabling characteristics. These include reprogramming cellular energy metabolism and evading immune destruction, both of which are now widely accepted as core features of cancer Hanahan2011Compton2020. Other proposed hallmarks and enabling traits include phenotypic plasticity (the ability of cancer cells to change their characteristics), disrupted differentiation, nonmutational epigenetic reprogramming, and the influence of the microbiome (microorganisms living in and around tumors) Hanahan2022Senga2021.
The Tumor Microenvironment and Enabling Characteristics
Cancers do not exist in isolation; they interact with a complex microenvironment made up of various normal cells, such as immune cells and fibroblasts, which can support tumor growth and help cancer cells acquire hallmark traits Hanahan2011Fouad2017Compton2020. Genome instability and inflammation are considered enabling characteristics that accelerate the acquisition of other hallmarks by increasing genetic diversity and supporting tumor-promoting conditions Hanahan2011Compton2020Nagy2020.
Physical and Molecular Hallmarks: Beyond Genetics
Recent research highlights the importance of physical changes in the tumor microenvironment, such as increased tissue stiffness, abnormal fluid pressure, and altered tissue architecture, as additional “physical hallmarks” of cancer . At the molecular level, long non-coding RNAs (lncRNAs) and epigenetic changes also play significant roles in regulating hallmark behaviors, offering new avenues for diagnosis and therapy Senga2021Gutschner2012.
Hallmarks in Different Cancer Types and Prognostic Implications
The prominence of specific hallmarks can vary between cancer types. For example, tissue invasion and metastasis are especially significant in stomach, pancreas, bladder, and ovarian cancers, while sustained angiogenesis is more prominent in lung squamous cell carcinoma . Genome instability is a key feature in lung, liver, pancreas, and kidney cancers Menyhárt2024Nagy2020. These patterns can influence prognosis and guide targeted therapy development.
Conclusion
The hallmarks of cancer provide a powerful framework for understanding the common features that drive cancer development and progression. As research advances, new hallmarks and enabling characteristics continue to be identified, reflecting the evolving complexity of cancer biology. This conceptual model not only helps organize our knowledge of cancer but also guides the development of new diagnostic and therapeutic strategies Hanahan2022Hanahan2011Fouad2017+2 MORE.
Sources and full results
Most relevant research papers on this topic