Innovative Strategies in Cancer Therapy: Overcoming Challenges Through Small Molecule and Peptide Design

Cancer remains one of the most challenging diseases to treat effectively, with conventional therapies such as chemotherapy, radiation, and surgery facing significant limitations. These therapies often lack specificity resulting in side effects and unintended toxicity. To tackle these obstacles strategies focusing on the design of molecules and peptides have emerged as promising avenues in cancer treatment. The structural rigidity of molecules is key in creating compounds that can precisely bind to cancer-related proteins sites improving accuracy while minimizing side effects. Strategies like cyclization, backbone modifications, and conjugation with polymers can improve the stability and efficacy of therapeutic peptides. Truncation and fragmentation techniques allow researchers to identify minimal active fragments of small molecules, streamlining the drug development process and reducing off-target effects. Scaffold hopping, a strategy for discovering structurally diverse compounds with similar biological activity, holds promise in identifying novel cancer therapies. By leveraging these innovative approaches, the goal of research is to discover more focused and potent therapies that can kill cancer cells only while causing the minimum amount of damage to tissues that are healthy. This chapter provides an overview of the challenges in cancer treatment and highlights the importance of conformational rigidity, peptide design, and small molecule optimization in developing the next generation of cancer therapies. The discussed strategies offer hope for improving patient outcomes and advancing the fight against this complex disease.