smile-peptide-toothpaste The dominant search intent for "smac peptide" is to understand its role, applications, and properties, particularly in the context of cancer treatment and apoptosis. The search results indicate a strong focus on synthetic peptides derived from the mitochondrial protein SMAC (Second Mitochondria-Derived Activator of Caspases), also known as DIABLO, and their potential therapeutic usesSmac/DIABLO is a mitochondrial proteinthat is released along with cytochrome c during apoptosis and activates cytochrome c/Apaf-1/capase-9 pathway. Analysis of ....
Tier 1:
* Core Entity: Smac peptide, SMAC, DIABLO
* High-Relevance Phrases: Smac-N7 peptide, sensitizing cancer cells, therapeutic agent in cancer treatment, induce apoptosis, pro-apoptotic peptide, cell-permeable peptides.
Tier 2:
* Related Entities/Concepts: Caspases, XIAP, cIAP1, mitochondrial protein, apoptosis, chemotherapeutic agents, nanoparticles, fusion peptide, blocking peptide, labeled peptides (biotin, 5-FAM).
* Attributes/Variations: Cell-permeable, synthetic, labeled, fusion peptides, specific sequences (e.gA novel polyarginine containing Smac peptide conjugate ...., Smac-N7, AVPIAQKSE).
* Applications: Sensitization to anticancer agents, drug delivery, research applications.
Tier 3:
* Repetitive/Less Crucial: Generic mentions of "peptide," "blocking/neutralizing," specific catalog numbers, very niche research applications without broader context.
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Smac peptides are a class of molecules derived from the mitochondrial protein SMAC (Second Mitochondria-Derived Activator of Caspases), also known as DIABLO. These peptides have gained significant attention for their potential as therapeutic agents, particularly in cancer treatment, due to their ability to promote apoptosis, or programmed cell death. Research has focused on developing various Smac-based cell-permeable peptides that are effective in sensitizing cancer cells to existing chemotherapeutic agents and other cancer therapies.
The fundamental role of SMAC/DIABLO within the cell is crucial to understanding the function of these peptides. Normally, SMAC is released from the mitochondria during apoptosis.This peptidehas the potential to be used as a therapeutic agent in cancer treatment.This is a 5-FAM-labeled Smac/Diablo Peptide (Abs/Em=492/518 nm). Once in the cytoplasm, it acts as a critical regulator by binding to and inhibiting inhibitor of apoptosis proteins (IAPs), such as XIAP and cIAP1. IAPs are a family of proteins that suppress apoptosis; by neutralizing them, SMAC effectively removes the brakes on the apoptotic pathway, allowing caspases to become active and execute cell death.作者：M Li·2015·被引用次数：36—Smac-conjugated nanoparticle (Smac-NP) wasdesigned to induce the apoptosis of cancer cellsand as a drug carrier for combination therapy. Synthetic Smac peptides are designed to mimic this natural function, offering a targeted approach to induce cancer cell death作者：M Santhanam·2024·被引用次数：13—ASMAC-targeting survivin/BIRC5-derivedpeptide, given intratumorally or intravenously, strongly inhibited lung tumor growth, cell proliferation, angiogenesis, ....
A key challenge in utilizing peptides therapeutically is their ability to penetrate cell membranes. Many early Smac peptides, while functional, could not efficiently enter cells on their own. This led to the development of modified versions, such as the well-studied Smac-N7 peptide, which corresponds to the N-terminal seven amino acids of SMACSmac-N7 peptide, the seven N-terminal amino acid of the mitochondrial protein Smac (second mitochondria-derived activator of caspase), cannot pass through .... To enhance cellular uptake, researchers have engineered cell-permeable Smac peptides. This often involves fusing the Smac peptide sequence to a cell-penetrating peptide (CPP) sequence, such as the Antennapedia homeodomain peptide or TAT peptide. These CPPs act as carriers, facilitating the entry of the Smac peptide into the target cell, thereby enabling it to interact with IAPs and initiate apoptosis.作者：K Mizukawa·2006·被引用次数：49—Smac/DIABLO is a mitochondrial protein released into cytosol during the progression of apoptosis.Smac/DIABLO promotes apoptosis by neutralizing the ...
These cell-permeable Smac-based peptides have demonstrated significant potential as sensitizers.Smac-N7 peptide When used in combination with conventional chemotherapy drugs like doxorubicin or other treatments like TRAIL (TNF-related apoptosis-inducing ligand), they can dramatically enhance the efficacy of these therapies. This synergistic effect allows for lower doses of chemotherapeutic agents to be used, potentially reducing side effects, or overcomes resistance mechanisms that cancer cells may have developed.
The therapeutic promise of Smac peptides extends to various cancer types. Studies have explored their use as standalone agents designed to induce apoptosis of cancer cells or as crucial components in combination therapies. For example, Smac peptides have been conjugated to nanoparticles (Smac-NP) for targeted drug delivery, further enhancing their therapeutic potential by delivering both the Smac peptide and other cytotoxic drugs directly to tumor sitesSynthetic Smac peptide enhances the effect of....
Beyond direct therapeutic applications, Smac peptides also serve as valuable tools in biological research. Labeled Smac peptides, such as biotinylated or fluorescently tagged variants (eSMAC/DIABLO -TAT (48-60)-[Lys]is a pro-apoptotic peptidethat is derived from the mitochondrial protein known either as Second Mitochondria-Derived ....g.Smac-N7 Peptide, Cell-Permeable, 5-FAM labeled), are used to study the mechanisms of apoptosis, investigate interactions with IAPs, and develop diagnostic or imaging agents. Blocking peptides derived from SMAC/DIABLO are also utilized in research settings, particularly for antibody validation and to specifically inhibit SMAC/DIABLO activity in experimental models.
While the development of synthetic Smac peptides, including non-peptide mimetics, is ongoing, the core principle remains the same: to leverage the natural apoptotic pathway by neutralizing IAP proteins. The ability of these peptides to act as pro-apoptotic agents and sensitize cancer cells to treatment underscores their importance in the ongoing quest for more effective cancer therapies. Continued research into peptide design, delivery systems, and combination strategies is expected to further unlock the clinical potential of Smac peptides.
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