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Drugging the undruggable: Advances in targeting KRAS signaling in solid tumors
Prajna Tripathi1, Rajni Kumari2, Rajiv Pathak3
1Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY, United States.
Abstract:
Cancer remains the leading cause of global mortality, prompting a paradigm shift in its treatment and outcomes with the advent of targeted therapies. Among the most prevalent mutations in RAS-driven cancers, Kirsten rat sarcoma viral oncogene homolog (KRAS) mutations account for approximately 86% of cases worldwide, particularly in lung, pancreatic, and colon cancers, contributing to poor prognosis and reduced overall survival. Despite numerous efforts to understand the biology of KRAS mutants and their pivotal role in cancer development, the lack of well-defined drug-binding pockets has deemed KRAS an "undruggable" therapeutic target, presenting significant challenges for researchers and clinicians alike. Through significant biochemical and technological advances, the last decade has witnessed promising breakthroughs in targeted therapies for KRAS-mutated lung, colon, and pancreatic cancers, marking a critical turning point in the field. In this chapter, we provide an overview of the characteristics of KRAS mutations across various solid tumors, highlighting ongoing cutting-edge research on the immune microenvironment, the development of KRAS-driven mice models, and the recent progress in the exploration of specific KRAS mutant-targeted therapeutic approaches. By comprehensive understanding of the intricacies of KRAS signaling in solid tumors and the latest therapeutic developments, this chapter will shed light on the potential for novel therapeutic strategies to combat KRAS-driven tumors and improve patient outcomes.
Insights
Targeted therapies are revolutionizing cancer treatment, especially for Kirsten rat sarcoma viral oncogene homolog (KRAS) mutations common in lung, pancreatic, and colon cancers. Recent advances offer new hope for these previously "undruggable" targets.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Therapeutics
Background:
- Cancer is a leading cause of death globally, with Kirsten rat sarcoma viral oncogene homolog (KRAS) mutations driving a significant proportion of solid tumors.
- KRAS mutations, prevalent in lung, pancreatic, and colon cancers, are associated with poor prognosis and reduced survival.
- Historically, KRAS has been considered
Purpose of the Study:
- To provide an overview of KRAS mutation characteristics in solid tumors.
- To highlight advancements in understanding the KRAS immune microenvironment and developing KRAS-driven mouse models.
- To review recent progress in targeted therapeutic approaches for KRAS-mutated cancers.
Main Methods:
- Literature review of biochemical and technological advances in targeted cancer therapy.
- Analysis of research on the tumor immune microenvironment in KRAS-driven cancers.
- Examination of preclinical models, including KRAS-driven mice.
- Synthesis of current therapeutic strategies targeting specific KRAS mutations.
Main Results:
- Significant breakthroughs in targeted therapies for KRAS-mutated cancers have emerged in the last decade.
- Understanding of KRAS biology and its role in cancer development has advanced considerably.
- Novel therapeutic strategies are being explored to overcome the challenges of targeting KRAS.
Conclusions:
- Targeted therapies represent a paradigm shift in treating KRAS-mutated cancers.
- Continued research into the immune microenvironment, preclinical models, and specific KRAS mutant-targeted therapies is crucial.
- Comprehensive understanding of KRAS signaling and therapeutic developments holds potential for improved patient outcomes in solid tumors.
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