Metastatic cancer definition

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Metastatic Cancer Definition and Key Concepts

Metastatic cancer refers to cancer that has spread from its original (primary) site to other parts of the body, forming new tumors in distant organs or tissues. This process, known as metastasis, is the leading cause of cancer-related deaths, accounting for over 90% of fatalities in cancer patients Welch2019Gerstberger2023Gómez-Cuadrado2017+3 MORE.

Mechanisms and Steps of Metastasis

Metastasis is a complex, multi-step process. It begins when cancer cells detach from the primary tumor, invade surrounding tissues, and enter the bloodstream or lymphatic system. These cells then travel to distant sites, survive in new environments, and establish secondary tumors Khan2023Fan2022Gómez-Cuadrado2017+2 MORE. The process requires cancer cells to adapt to and sometimes manipulate the new tissue microenvironment to support their growth and survival Bacac2008Welch2019Khan2023+1 MORE.

Key steps in metastasis include:

Detachment from the primary tumor
Invasion into surrounding tissues
Entry and survival in the circulatory system
Exit into distant tissues (extravasation)
Colonization and growth in new organs Welch2019Khan2023Fan2022+2 MORE

Characteristics of Metastatic Cancer Cells

Metastatic cancer cells possess special traits that allow them to move, invade, and survive in foreign environments. These include increased motility, the ability to modulate and adapt to new microenvironments, and the capacity to colonize distant tissues Bacac2008Welch2019Gerstberger2023+1 MORE. Genetic and epigenetic changes within the cancer cells, as well as interactions with the tumor microenvironment, play crucial roles in enabling these abilities Bacac2008Khan2023Gerstberger2023+1 MORE.

Clinical Impact and Challenges

Metastatic cancer is often more difficult to treat than localized cancer. The spread of cancer cells to vital organs is usually the final and most dangerous stage of cancer progression Gerstberger2023Castaneda2022Obenauf2015. Despite advances in early detection and treatment of primary tumors, effective therapies for metastatic disease remain limited, making it a major challenge in cancer care Gerstberger2023Castaneda2022Guan2015.

Conclusion

Metastatic cancer is defined by the spread of cancer cells from the original tumor to distant parts of the body, where they form new tumors. This process involves a series of complex steps and adaptations, making metastatic cancer particularly deadly and difficult to treat. Understanding the mechanisms and characteristics of metastasis is essential for developing better strategies to prevent and manage metastatic disease Welch2019Khan2023Gerstberger2023+4 MORE.

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Most relevant research papers on this topic

Metastatic cancer cell.

Metastatic cancer cells adapt to and subvert tissue microenvironments, promoting their proliferation and survival, and understanding their genetic makeup can help develop targeted therapies for metastatic cancers.

Literature ReviewHighly Cited

2008·

318citations

·M. Bacac et al.

Annual review of pathology·

DOI

Defining the Hallmarks of Metastasis

Four distinguishing features of metastasis are motility, invasion, ability to modulate microenvironments, plasticity, and colonization of secondary tissues, which can be targeted to improve patient outcomes.

Highly Cited

2019·

517citations

·D. Welch et al.

Cancer research·

DOI

Cancer metastasis: Molecular mechanisms and clinical perspectives.

Cancer metastasis is a complex process influenced by both cancer cell properties and the tumor microenvironment, with intricate signaling pathways enabling cancer cells to survive and grow in distant sites.

Literature ReviewHighly Cited

2023·

91citations

·S. Khan et al.

Pharmacology & therapeutics·

DOI

Metastasis

Metastasis is an evolving, heterogeneous, systemic disease, driven by clonal selection, dynamic cell transitions, and immune co-optation, offering opportunities for developing more effective therapies.

Literature ReviewHighly Cited

2023·

618citations

·Stefanie Gerstberger et al.

Cell·

DOI

The overall process of metastasis: From initiation to a new tumor.

Cancer metastasis involves the migration of cancer cells from the primary site to distant organs, with various mechanisms and lifestyle factors contributing to its progression.

2022·

33citations

·Tianyue Fan et al.

Biochimica et biophysica acta. Reviews on cancer·

DOI

Mouse models of metastasis: progress and prospects

Current mouse models of metastasis provide valuable insights into cancer progression and help test potential therapies, but require further technological advances for effective translation into cancer treatments.

Literature ReviewRigorous JournalHighly Cited

2017·

255citations

·L. Gómez-Cuadrado et al.

Disease Models & Mechanisms·

DOI

Mechanisms of cancer metastasis.

Understanding cancer progression from primary tumor growth to metastatic formation can help develop personalized therapeutic approaches to prevent or inhibit metastasis.

Highly Cited

2022·

184citations

·Maria Castaneda et al.

Seminars in cancer biology·

DOI

Cancer metastases: challenges and opportunities

Cancer metastasis is a major cause of cancer morbidity and mortality, and targeting biochemical events and parameters in the metastatic process and tumor microenvironment can potentially prevent and inhibit cancer metastasis.

Highly Cited

2015·

823citations

·X. Guan

Acta Pharmaceutica Sinica. B·

DOI

Molecular principles of metastasis: a hallmark of cancer revisited

Recent advancements in cancer biology research reveal the molecular underpinnings of metastasis, improving our understanding of cancer cell mobility, plasticity, and communication with the tumor microenvironment, aiding in targeted therapies.

Rigorous JournalHighly Cited

2020·

1917citations

·Jawad Fares et al.

Signal Transduction and Targeted Therapy·

DOI

Surviving at a distance: organ specific metastasis

Organ-specific metastatic traits enable cancer cells to successfully colonize distinct organ sites, reducing cancer-related mortality.

Literature ReviewHighly Cited

2015·

396citations

·A. Obenauf et al.

Trends in cancer·

DOI

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