p53 inhibitors/activators

p53 is a tumor suppressor protein which plays a critical role in apoptosis, Cell-cycle arrest, and DNA damage. p53 give a contribution to apoptosis with BAK, BAX and BCL-2. p53 can be phosphorylated by ATM / ATR / DNA-PK, Chk1 / Chk2, MAPK (JNK1-3, ERK1-2, p38 MAPK) and some other kinases. Cell-cycle arrest, DNA repair, Angiogenesis are related to p53 because CDKN1A, 14-3-3-σ and MMP2 are all p53-target gene which can be regulated by p53. A protein called Mdm2 which keep a continuous degradation of p53 binds to p53 to prevent p53 from transporting from nucleus to the cytosol.

Cat.No. Product Name Information Product Use Citations Product Validations
S2929 Pifithrin-α (PFTα) Hhydrobromide Pifithrin-α is an inhibitor of p53, inhibiting p53-dependent transactivation of p53-responsive genes. Pifithrin-α is also a potent agonist of the aryl hydrocarbon receptor (AhR).
J Adv Res, 2025, S2090-1232(25)00192-4
Front Pharmacol, 2025, 16:1608156
J Cell Mol Med, 2025, 29(11):e70641
Verified customer review of Pifithrin-α (PFTα) Hhydrobromide
S7724 Eprenetapopt (APR-246) Eprenetapopt (APR-246, PRIMA-1MET) is a small organic molecule that has been shown to restore tumour-suppressor function primarily to mutant p53 and also to induce cell death in various cancer types. It induces apoptosis and autophagy.
Oncotarget, 2024, 15:614-633
J Cell Mol Med, 2024, 28(9):e18374
Cell Death Dis, 2023, 14(11):783
S8483 CBL0137 Hydrochloride CBL0137 (CBLC137, Curaxin 137) HCl activates p53 and inhibits NF-κB with EC50s of 0.37 μM and 0.47 μM in the cell-based p53 and NF-kB reporter assays, respectively. It also inhibits histone chaperone FACT (facilitates chromatin transcription complex).
Oncogene, 2025, 44(13):893-908
Cancer Biol Ther, 2025, 26(1):2511301
JCI Insight, 2023, 8(4)e154120
S8059 Nutlin-3a Nutlin-3a ((-)-Nutlin-3), the active enantiomer of Nutlin-3, inhibits the p53/MDM2 interaction with IC50 of 90 nM in a cell-free assay. Nutlin-3a induces autophagy and apoptosis in a p53-dependent manner.
Nucleic Acids Res, 2025, 53(13)gkaf627
Cell Rep Med, 2025, 6(8):102284
Bone Res, 2025, 13(1):62
Verified customer review of Nutlin-3a
S7030 RG-7112 RG7112 (RO5045337) is an orally bioavailable and selective p53-MDM2 inhibitor with HTRF IC50 of 18 nM.
NPJ Aging, 2025, 11(1):6
Int J Mol Sci, 2024, 25(7)3948
bioRxiv, 2024, 2024.10.09.617493
S2930 Pifithrin-μ Pifithrin-μ (NSC 303580, PFTμ, 2-Phenylethynesulfonamide) is a specific p53 inhibitor by reducing its affinity to Bcl-xL and Bcl-2, and this compound also inhibits HSP70 function and autophagy.
Cell Death Dis, 2025, 16(1):42
Front Nutr, 2025, 12:1663245
Sci Adv, 2025, 11(12):eadq9111
Verified customer review of Pifithrin-μ
S1172 Serdemetan (JNJ-26854165) Serdemetan (JNJ-26854165) acts as a HDM2 ubiquitin ligase antagonist and also induces early apoptosis in p53 wild-type cells, inhibits cellular proliferation followed by delayed apoptosis in the absence of functional p53. Phase 1.
Elife, 2025, 14e75393
J Physiol, 2025, 603(19):5477-5508
Signal Transduct Target Ther, 2022, 7(1):97
Verified customer review of Serdemetan (JNJ-26854165)
S2781 RITA RITA induces both DNA-protein and DNA-DNA cross-links with no detectable DNA single-strand breaks, and this compound also inhibits MDM2-p53 interaction by targeting p53.
Cell Death Discov, 2024, 10(1):381
J Cancer, 2023, 14(2):200-218
Theranostics, 2022, 12(9):4110-4126
Verified customer review of RITA
S7723 PRIMA-1 PRIMA-1 (2,2-Bis(hydroxymethyl)-3-quinuclidinone) is a mutant p53 reactivator. It induces apoptosis and inhibits growth of human tumors with mutant p53.
J Control Release, 2024, 371:111-125
Nat Chem Biol, 2022, 10.1038/s41589-022-00996-7
J Pers Med, 2022, 12(2)258
S8000 Tenovin-1 Tenovin-1 protects against MDM2-mediated p53 degradation, which involves ubiquitination, and acts through inhibition of protein-deacetylating activities of SirT1 and SirT2. This compound is also an inhibitor of dihydroorotate dehydrogenase (DHODH).
J Pharm Biomed Anal, 2021, 201:114121
J Transl Med, 2019, 17(1):76
Int J Mol Med, 2019, 44(3):1091-1105
Verified customer review of Tenovin-1

Signaling Pathway Map