IκBs are a family of related proteins that have an N-terminal regulatory domain, followed by six or more ankyrin repeats and a PEST domain near their C terminus. IκBα is the best-studied and major IκB protein. [show the full text]
IκBs are a family of related proteins that have an N-terminal regulatory domain, followed by six or more ankyrin repeats and a PEST domain near their C terminus. IκBα is the best-studied and major IκB protein. [show the full text]
| N° de cat. | Nom du produit | Informations | Citations dutilisation du produit | Validations de produit |
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| S8922 | TBK1/IKKε-IN-5 | TBK1/IKKε-IN-5 (composé 1) est un double inhibiteur de la TANK-binding kinase 1 (TBK1) et de l'IκB kinase-ε (IKKε/IKK-i) avec des IC50 de 1,0 nM et 5,6 nM pour TBK1 et IKKε, respectivement. L'inhibition de TBK1/IKKε améliore la réponse au blocage de PD-1, ce qui prédit efficacement la réponse tumorale in vivo. |
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| S9042 | Wedelolactone | La Wedelolactone, un composé naturel dérivé de plantes médicinales, est un inhibiteur de l'IKK qui est essentiel à l'activation de NF-κB en médiatisant la phosphorylation et la dégradation de l'IκBα. Ce composé est également un inhibiteur de la caspase-11. |
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| S8078 | Bardoxolone Methyl (RTA 402) | Bardoxolone Methyl (RTA 402, TP-155, NSC 713200, CDDO Methyl Ester, CDDO-Me) est un inhibiteur de l'IKK, montrant de puissantes activités proapoptotiques et anti-inflammatoires; C'est aussi un puissant activateur de Nrf2 et un inhibiteur du nuclear factor-κB (NF-κB). Bardoxolone Methyl abroge la ferroptosis. Le Bardoxolone methyl induit l'apoptosis et l'autophagy dans les cellules cancéreuses. |
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| S1396 | Resveratrol (trans-Resveratrol) | Resveratrol a un large spectre de cibles incluant les cyclooxygénases (c.-à-d. COX, IC50=1,1 M), les lipooxygénases (LOX, IC50=2,7 M), les kinases, les sirtuines et d'autres protéines. Il a des effets anticancéreux, anti-inflammatoires, hypoglycémiants et d'autres effets cardiovasculaires bénéfiques. Resveratrol induit la mitophagie/autophagie et l'apoptose dépendante de l'autophagie. |
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| S2882 | IKK-16 | IKK-16 est un inhibiteur sélectif de l'IκB kinase (IKK) pour IKK-2, le complexe IKK et IKK-1 avec des IC50 de 40 nM, 70 nM et 200 nM respectivement dans des tests acellulaires. IKK-16 inhibe également la phosphorylation de LRRK2 Ser935 dans les cellules et l'activité kinase de LRRK2 in vitro avec une IC50 de 50 nM. |
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| S2824 | TPCA-1 | Le TPCA-1 (GW683965) est un inhibiteur de l'IKK-2 avec une IC50 de 17,9 nM dans un essai acellulaire, il inhibe la voie NF-κB et présente une sélectivité 22 fois supérieure à celle de l'IKK-1. Le TPCA-1 est également un inhibiteur de STAT3 et améliore l'apoptose. |
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| S8044 | BMS-345541 | BMS-345541 est un inhibiteur hautement sélectif des sous-unités catalytiques de IKK-2 et IKK-1 avec des IC50 de 0,3 μM et 4 μM dans des essais sans cellules, respectivement. |
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| S7352 | Bay 11-7085 | BAY 11-7085 (Bay 11-7083) est un inhibiteur irréversible de la phosphorylation d'IκBα induite par le TNFα avec une IC50 de 10 μM. |
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| S2864 | IMD 0354 | IMD-0354 (IKK2 Inhibiteur V) est un inhibiteur d'IKKβ et bloque la phosphorylation de l'IκBα dans la voie NF-κB. |
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| S7948 | MRT67307 HCl | MRT67307 est un puissant inhibiteur double de l'IKKϵ et du TBK1 avec une IC50 de 160 et 19 nM, respectivement. MRT67307 inhibe puissamment l'ULK1 et l'ULK2 et bloque l'autophagy. |
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IκB (Inhibitor of κB) functions as a primary inhibitor of NF-κB activation, with an N-terminal regulatory domain, followed by six or more ankyrin repeats and a PEST domain near their C terminus. [1] IκB family contains eight known members, IκBα, IκBβ, IκBε, Bcl-3 (B-cell lymphoma 3), IκBζ, and IκBns (NF-κBδ), as well as the precursor Rel proteins p100 (NF-κB2) and p105 (NF-κB1) due to the presence of multiple ankyrin repeats in their C-terminal halves. IκBα and IκBβ are broadly expressed in all type of cells, whereas IκBε is expressed only in hematopoietic cells. Bcl-3, IκBζ and IkBNS are atypical IκB proteins that exhibit limited expression following NF-κB activation. The regulation of IκB proteins varies by protein type, and each IκB moiety exhibits a unique affinity for NF-κB complexes. [2]
In unstimulated cells, the IκBα proteins mask the nuclear localization signals (NLS) of NF-κB proteins, keeping them sequestered in an inactive state in the cytoplasm. In response to stimuli, IκB kinase (IKK) phosphorylates IκBα leading to the degradation of IκBα, and subsequent NF-κB activation. IκBα expression can be activated by NF-κB to generate a negative feedback loop. Similar to IκBα, IκBβ acts by sequestering p65- and c-Rel-containing complexes in the cytoplasm. However, nuclear localized IκBβ also binds to p65:c-Rel heterodimers, promoting continued binding to specific κB sites, and augmenting late transcription of select target genes (i.e. TNF and IL-1β). IκBε is induced slowly, and selectively regulates p65 homodimers and c-Rel:p65 heterodimers. Bcl-3 functions as a transcriptional co-activator that may both inhibit and facilitate NF-κB-dependent transcription in a context-specific manner. Like Bcl-3, IκBζ can enhance transcription in association with p50 NF-κB dimmers despite the prescence of distinct mechanisms. IκBns selectively inhibits NF-κB-dependent pro-inflammatory gene expression by stabilizing p50 homodimers at κB sites. In addition to exclusively stabilizing RelB dimers, p100 itself can act more broadly in inhibiting NF-κB dimers. The p105 also acts like a typical IκB protein, and is additionally associated with the activation of the MAPK-ERK signaling pathway through the binding of MAP3K8 (TPL2). Moreover, the functions of individual IκB family members are quite heterogeneous and are not limited to this particular role in regulating NF-κB signaling. [2]
In oncology, the direct activation of NF-κB complexes through the loss of the inhibitory proteins IκBα and IκBε has been observed in Hodgkin’s lymphoma. Since the NF-κB signal pathway plays a critical role in tumorigenesis bv way of abberant IκB activity, a variety of compounds targeting IKK and its associated enzymes are in clinical development. [3] For instance, the proteasome inhibitor Bortezomib (Velcade®) has been approved by the FDA for use in haematological malignancies. [4] In addition, Bortezomib is currently being explored in clinical development for its efficacy against solid tumors (clinicaltrials.gov; NCT00479128).