p53 peptide p53 - p28-azurin-peptide-sequence amino acids 17 to 26 fragment of p53 Understanding p53 Peptides: A Deep Dive into Their Role in Cancer Suppression and Therapeutic Potential

p2a-peptide The p53 peptide is a critical area of research in oncology, focusing on fragments or modified versions of the tumor suppressor protein p53. This protein, encoded by the TP53 gene, is a master regulator of cellular responses to stress and DNA damage, acting as a crucial guardian of the genome.A nine-residue peptide,CDB3, which was derived from a p53 binding protein, binds to p53 core domain and stabilizes it in vitro. When p53 acts as a tumor suppressor in many tumor types, it can induce cell cycle arrest, DNA repair, or programmed cell death (apoptosis), thereby preventing the proliferation of abnormal cells.Peptide Activators of the p53 Tumor Suppressor Defects in TP53 (Tumor Protein P53) are implicated in approximately half of all human cancers, highlighting its pivotal role in preventing cancer development.

The Significance of p53 Peptides in Research and Therapy

The inherent importance of p53 has led to extensive investigation into its function and therapeutic manipulation作者：CJ Brown·2011·被引用次数：162—The tumour suppressor protein p53 is a transcription factor thatguards the cell against various stress signalsthrough the induction of cell cycle arrest, .... p53 peptides, derived from specific regions of the protein or designed to mimic its functions, offer unique advantages for research and potential therapeutic applications. These peptides can be engineered to target specific interactions, stabilize the protein, or even reactivate its tumor-suppressive functions, particularly when the p53 protein is mutated or inactivated.Targeting mutant p53-expressing tumours with a T cell ...

One key interaction studied involves the p53(17-26) peptide, which represents the amino acids 17 to 26 fragment of p53. This specific sequence is known as the Mdm-2 binding domain of p53, also referred to as p53N. Mdm2 is a major negative regulator of the tumor suppressor p53 protein, and its interaction with p53 leads to the degradation of p53, thereby promoting tumor development and survival作者：S Baek·2012·被引用次数：325—We present here a 2.0 Å resolution structure of the Mdm2 protein with a bound stapledp53 peptide. Such peptides, which are conformationally and .... Therefore, peptides that can disrupt this p53–MDM2 interaction are of significant therapeutic interestEvidence has accumulated indicating that HLA-A2-restricted CTLs specific for human wild-type sequencep53epitopes lyse tumor cells expressing mutantp53.. For instance, research has explored D-peptide inhibitors of the p53–MDM2 interaction and peptide inhibitors targeting FOXO4-p53 interactions.TP53 blocking peptide | p53 Blocking Peptide-NP_000537.3

Beyond targeting inhibitory interactions, p53 peptides are also being developed to enhance p53's activity. One notable example is the development of stapled p53 peptides. These stapled peptides are conformationally constrained and have shown promise in targeting high-value therapeutically relevant binding sites. The structure of a stapled p53 peptide bound to Mdm2 has been elucidated, providing insights into how these modified peptides can effectively bind to and potentially modulate interactions with Mdm2Role of p53 in Cell Death and Human Cancers - PMC - NIH. A specific stapled α-helical peptide ATSP-7041 has been shown to be a specific dual inhibitor of MDM2 and MDMX, effectively inducing p53-dependent apoptosis.Structure of the Stapled p53 Peptide Bound to Mdm2

Other research focuses on peptide activators of the p53 tumor suppressor.Stapled peptide reactivates p53 These strategies aim to restore or enhance the function of p53, which is often compromised in cancer. For example, a nine-residue peptide called CDB3, derived from a p53 binding protein, has been shown to bind to the p53 core domain and stabilize it in vitroThis peptide isamino acids 17 to 26 fragment of p53, the Mdm-2 binding domain of p53 known also as p53N. This sequence contains all of the residues that ....

Applications of p53 Peptides in Cancer Therapy and Diagnostics

The therapeutic potential of p53 peptides extends to various cancer treatment strategies. For instance, a novel tumor therapeutic has been developed that combines the induction of ferroptosis with the activation of p53, presenting a potentially viable therapeutic paradigm. This approach leverages the multifaceted roles of p53 in cell fate determination.p53 acts as a tumor suppressor in many tumor typesby inducing growth arrest or apoptosis. P53 is also involved in cell cycle regulation as transactivator that negatively regulate cell division. Defects in p53 are the cause of numerous cancers.

Furthermore, p53 peptides are valuable tools in diagnostics and immunotherapies. A pool of 96 peptides derived from a peptide scan through Cellular tumor antigen p53 can be used for various immunological assays. Research has also focused on a wild-type sequence p53 peptide presented by HLA-A24, demonstrating that T cells specific for such epitopes can lyse tumor cells expressing mutant p53.Evidence has accumulated indicating that HLA-A2-restricted CTLs specific for human wild-type sequencep53epitopes lyse tumor cells expressing mutantp53. This opens avenues for developing T cell receptor-like antibodies targeting p53 epitopes for cancer treatmentCPC Scientific Inc.is a CRDMO specializing in peptide and oligonucleotide production and therapeutic development. We are your TIDES Partner from Concept to ....

The ability to synthesize specific p53 peptides is crucial for advancing this research.TP53 - Cellular tumor antigen p53 - Homo sapiens (Human) Companies specializing in peptide and oligonucleotide production and therapeutic development offer services for creating these crucial molecules作者：S Baek·2012·被引用次数：325—We present here a 2.0 Å resolution structure of the Mdm2 protein with a bound stapledp53 peptide. Such peptides, which are conformationally and .... For example, a synthetic peptide corresponding to the C-terminal region of human p53 has been used as an immunogen to raise antibodies for research.作者：T Takenobu·2002·被引用次数：129—Here, we show that the protein delivery system using 11 poly-argininepeptides(11R) is a powerful tool for the transduction of the biologically active tumor ...

Understanding p53's Broader Role

Beyond its direct role in cancer, p53 is a transcription factor that guards the cell against various stress signals. Its activation leads to the induction of several pathways that regulate DNA repair and cell cycle progression作者：N Rasafar·2020·被引用次数：15—The mutation ofp53protein is one of the frequent causes of human cancer since it has a key role in numerous cell stability and proliferation .... Defects in p53 are linked to various conditions, including Li-Fraumeni Syndrome and Osteogenic Sarcoma, underscoring the broad impact of this protein.作者：D Kang·2025·被引用次数：3—FOXO4-DRI is a senolytic peptide that targets p53, a crucial tumor suppressor that prevents genomic mutations. (32) Targeting p53 presents a ... The TP53 tumor protein p53 is a complex molecule with transcriptional activation, DNA binding, and oligomerization domains, contributing to its diverse regulatory functions.

In summary, p53 peptides represent a dynamic and promising field of research. Their ability to modulate p53 function, disrupt oncogenic interactions, and serve as diagnostic or therapeutic agents underscores their significance in the ongoing fight against cancerRole of Dietary Antioxidants in p53-Mediated Cancer ... - NIH. From understanding the fundamental alpha-helical structure in p53 peptides to developing novel therapeutic strategies, research into p53 peptides continues to push the boundaries of cancer treatment and prevention作者：D Kang·2025·被引用次数：3—FOXO4-DRI is a senolytic peptide that targets p53, a crucial tumor suppressor that prevents genomic mutations. (32) Targeting p53 presents a ....