CDK4
CDK4 is a cyclin-dependent serine/threonine kinase that partners with D-type cyclins to drive G1-phase progression before DNA synthesis[1]. Mechanistically, cyclin D-CDK4/6 phosphorylates RB, weakens RB-dependent transcriptional repression, and enables late-G1 signaling toward E2F-linked S-phase entry[2]. In cancer models, disruption of the CDK-RB1-E2F pathway supports malignant proliferation, and HR^+/HER2^- breast cancer provides a clinically established setting for CDK4/6 inhibition[3]. Compared with related isoforms, CDK4 and CDK6 share cell-cycle functions, but CDK4 is described as a prominent oncogenic driver in breast cancer, whereas CDK6 has a crucial role in hematopoietic stem-cell differentiation[3][4]. For experimental and translational applications, palbociclib, ribociclib, and abemaciclib inhibit CDK4/6, reduce RB phosphorylation, induce G1 arrest, and support endocrine-therapy combinations in HR^+/HER2^- advanced breast cancer studies[3][5][6][7].
References:
- [1]. Baker SJ, et al. CDK4: a master regulator of the cell cycle and its role in cancer. Genes Cancer. 2022 Aug 25;13:21-45. [Content Brief]
- [2]. Harbour JW, et al. Cdk phosphorylation triggers sequential intramolecular interactions that progressively block Rb functions as cells move through G1. Cell. 1999 Sep 17;98(6):859-69. [Content Brief]
- [3]. Braal CL, et al. Inhibiting CDK4/6 in Breast Cancer with Palbociclib, Ribociclib, and Abemaciclib: Similarities and Differences. Drugs. 2021 Feb;81(3):317-331. [Content Brief]
- [4]. Fassl A, et al. CDK4 and CDK6 kinases: From basic science to cancer therapy. Science. 2022 Jan 14;375(6577):eabc1495. [Content Brief]
- [5]. Finn RS, et al. Palbociclib and Letrozole in Advanced Breast Cancer. N Engl J Med. 2016 Nov 17;375(20):1925-1936. [Content Brief]
- [6]. Hortobagyi GN, et al. Ribociclib as First-Line Therapy for HR-Positive, Advanced Breast Cancer. N Engl J Med. 2016 Nov 3;375(18):1738-1748. [Content Brief]
- [7]. Goetz MP, et al. MONARCH 3: Abemaciclib As Initial Therapy for Advanced Breast Cancer. J Clin Oncol. 2017 Nov 10;35(32):3638-3646. [Content Brief]
All Product Categories
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CDK4 Related Products (224)
Related Products (224)
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Recombinant Proteins (5)
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Antibodies (2)
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Ribociclib hydrochloride
0 ImagesSynonyms: LEE011 hydrochlorideRRibociclib (LEE011) hydrochloride is an ATP-competitive and orally active CDK4/6 inhibitor that crosses the blood-brain barrier with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
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Flavopiridol Hydrochloride
0 ImagesSynonyms: Alvocidib Hydrochloride; L86-8275 Hydrochloride; HMR-1275 Hydrochloride
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Dalpiciclib
0 ImagesSynonyms: SHR-6390
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BMS-265246
0 ImagesBMS-265246 is a potent and selective cyclin-dependent kinase CDK1 and CDK2 inhibitor, with IC50 values of 6 and 9 nM, respectively. BMS-265246 inhibits CHI3L1 (chitinase 3-like-1) stimulation of ACE2 (angiotensin converting enzyme 2) and SPP (viral spike protein priming proteases). BMS-265246 can be used for ovarian cancer and COVID-19 research.
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Sinigrin
0 ImagesSynonyms: Allyl-glucosinolate; 2-Propenyl-glucosinolateSinigrin (Allyl-glucosinolate) is an orally active glucosinolate found in cruciferous plants. Sinigrin possesses multiple activities such as anti-cancer, antibacterial, antifungal, anti-inflammatory, antioxidant, and inhibition of fat synthesis. Sinigrin can be used in the research of tumors, inflammatory, and metabolic diseases.
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Dalpiciclib hydrochloride
0 ImagesSynonyms: SHR-6390 hydrochloride
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Trilaciclib hydrochloride
0 ImagesSynonyms: G1T28 hydrochlorideTrilaciclib (G1T28) hydrochloride is an orally active CDK4/6 inhibitor with IC50 values of 1 nM and 4 nM for CDK4 and CDK6, respectively. Trilaciclib hydrochloride can effectively inhibit tumor cell proliferation and reduce the hematological toxicity caused by chemotherapy. Trilaciclib hydrochloride attenuates apoptosis and myelosuppression induced by 5FU (HY-90006) chemotherapy.
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BSJ-04-132
0 ImagesBSJ-04-132 is a PROTAC connected by ligands for Cereblon and CDK. BSJ-04-132 is a potent and selective Ribociclib-based CDK4 degrader (PROTAC), with IC50s of 50.6 nM and 30 nM for CDK4/D1 and CDK6/D1, respectively. BSJ-04-132 does not induce CDK6 and IKZF1/3 degradation. BSJ-04-132 has anti-cancer activity.
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PHA-793887
0 ImagesPHA-793887 is a CDK inhibitor (with IC50 values of 8 nM for Cdk2, 60 nM for Cdk1, 62 nM for Cdk4, 138 nM for Cdk9). PHA-793887 inhibits purified GSK3β (IC50 79 nM). PHA-793887 reduces the phosphorylation level of nucleophosmin/cdc6, induces G1/G2/M phase arrest, and triggers Apoptosis by activating Caspase-3. PHA-793887 exhibits anticancer activity against leukemia. PHA-793887 can be used in research related to acute leukemia, chronic myeloid leukemia, and advanced/metastatic solid tumors.
