merck p53 stapled peptide stapled peptides with in vivo activity - metabolic-disorder-peptides bicyclic stapled peptide p53-16 Merck p53 Stapled Peptide: A Novel Approach in Cancer Therapy

cjc-1295-peptide-uses The merck p53 stapled peptide represents a significant advancement in the field of oncology, offering a novel therapeutic strategy by targeting the crucial p53 protein. This innovative approach leverages the power of stapled peptides to enhance the stability and efficacy of peptides designed to interact with and modulate the function of p53, a key tumor suppressor. Research into stapled peptides has paved the way for the development of molecules that can overcome the limitations of traditional peptides, such as poor bioavailability and rapid degradation.

At the core of this therapeutic strategy is the P53 protein's role in cellular regulation.作者：K Sharma·2020·被引用次数：18—To explore this concept, we targeted the design and synthesis ofstapled peptide inhibitors of the p53-MDM2 PPIwhich incorporated substituents ... Wild-type p53 acts as a crucial guardian of the genome, detecting DNA damage and initiating cellular responses that can include cell cycle arrest, DNA repair, or programmed cell death (apoptosis). However, in many cancers, the p53 pathway is compromised, either through mutation or inactivation by other proteins作者：K Hu·2021·被引用次数：2—The goal of this work is to develop astapled peptide-based radiotheranostic agentsfor PET-imaging guided radiotherapy of p53 mutant cancer.. One of the primary mechanisms for p53 inactivation involves its binding to negative regulators like MDM2 and MDMX. These interactions lead to the ubiqui­tinylation and subsequent degradation of p53, thereby promoting tumor growth and survival.Probing p53 Activating Stapled-Peptide Interaction with ...

Stapled peptides offer a unique solution to this problem. Unlike linear peptides, stapled peptides are engineered with a chemical "staple" that locks them into a specific three-dimensional conformation, mimicking the alpha-helical structure crucial for binding to target proteins. This stabilization significantly improves their resistance to enzymatic degradation and enhances their cell permeability. For instance, the development of stapled peptides like ALRN-6924 has demonstrated the potential of these molecules as cell-penetrating stapled alpha-helical peptides designed to potently disrupt the interaction between p53 and its negative regulators, MDM2 and MDMX. This disruption can effectively restore p53 activity, leading to cancer cell death.

The merck p53 stapled peptide research aligns with this broader effort to reactivate the p53 pathway. Studies have explored various stapled peptide designs, including those with bicyclic stapled peptide p53-16, which has shown improved alpha-helicity and proteolytic stability, alongside nanomolar binding affinity.作者：A Chandramohan·2024·被引用次数：39—We present workflows for identifyingstapled peptidesagainst Mdm2(X) with in vivo activity and no off-target effects. The ability of these stapled peptides to bind effectively to targets like MDM2 is critical. For example, the stapled p53 peptide structure bound to Mdm2 has been elucidated, providing valuable insights into the molecular basis of their inhibitory action.2025年10月25日—Finally, targeted radionuclide therapy confirmed that [64Cu]Cu-DOTA-STP effectively inhibited tumor growth, irrespective ofp53phenotypes.

Furthermore, the therapeutic potential of stapled peptides extends beyond direct inhibition. Research into stapled peptide drug development has focused on creating potent dual inhibitors of MDM2 and MDMX, such as ATSP-7041, which effectively activate the p53 pathway in tumors.Probing p53 Activating Stapled-Peptide Interaction with ... This dual inhibition strategy is particularly promising for p53-dependent cancer therapy.Novel Stapled Peptide P53 Therapy Enhances Anti ... The development of stapled peptides with in vivo activity is a key focus, ensuring that these molecules can exert their therapeutic effects systemically.

The pursuit of effective stapled peptide therapeutics also involves optimizing their properties for clinical useDesign of stapled peptide-based PROTACs for MDM2/ .... This includes investigating novel stapling chemistries and designing stapled peptides that can target specific cancer types or even facilitate targeted delivery. For example, stapled peptide-based radiotheranostic agents are being developed for PET-imaging guided radiotherapy of p53 mutant cancer, showcasing the versatility of this technology. The concept of stapled peptides shapeshifting to slip through cellular barriers highlights ongoing research into improving their pharmacokinetic profilesWe demonstrated thatbicyclic stapled peptide p53-16significantly improved α-helicity and proteolytic stability. Especially, p53-16 showed nanomolar binding ....

In summary, the merck p53 stapled peptide initiative is part of a larger scientific endeavor to harness the power of stapled peptides for cancer treatment. By stabilizing peptides and enhancing their ability to interact with critical proteins like p53 and its regulators MDM2 and MDMX, these engineered molecules offer a promising avenue for preventing MDM2 from suppressing wild-type p53 and reinstating its tumor-suppressive functions. The ongoing research into stapled peptides, including their design, synthesis, and clinical application, underscores their potential to become a cornerstone of future cancer therapies, offering hope for patients with various types of malignanciesStapled peptides as scaffolds for developing radiotracers ....