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 (233)
Related Products (233)
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Recombinant Proteins (4)
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Antibodies (2)
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Riviciclib
0 ImagesCat. No.: HY-16559ACAS No.: 920113-02-6Synonyms: P276-00 free baseRiviciclib (P276-00 free base) is a potent cyclin-dependent kinase (CDK) inhibitor, which inhibits CDK9-cyclinT1, CDK4-cyclin D1, and CDK1-cyclinB with IC50s of 20 nM, 63 nM, and 79 nM, respectively. Riviciclib shows antitumor activity on cisplatin-resistant cells.
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CDK2/4 ligand 1
0 ImagesCat. No.: HY-W1047040CAS No.: 1211585-07-7
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CDK4/9-IN-1
0 ImagesCat. No.: HY-170815CAS No.: 2577288-83-4CDK4/9-IN-1 (Compound 29) is a selective dual CDK4/9 inhibitor with IC50 values of 23 nM and 12 nM, respectively. CDK4/9-IN-1 is promising for research of cancers.
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CDK4/6-IN-28
0 ImagesCat. No.: HY-183771CAS No.: 3110098-09-1CDK4/6-IN-28 is a potent, orally active, and selective CDK4/6 inhibitor IC50 values of 14.02 and 10.03 nM, respectively. CDK4/6-IN-28 inhibits breast cancer cell colony formation, migration, and proliferation. CDK4/6-IN-28 induces G1-phase cell cycle arrest and apoptosis in breast cancer cells. CDK4/6-IN-28 exhibits tumor inhibitory activity in breast cancer xenograft mouse models. CDK4/6-IN-28 can be used for the research of breast cancer.
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CDK4/6-IN-7
0 ImagesCat. No.: HY-143257CAS No.: 2649120-20-5CDK4/6-IN-7 is a potent, selective and orally active CDK4/6 inhibitor, with IC50s of 1.58 and 4.09 nM, respectively. CDK4/6-IN-7 can be used for the research of breast cancer.
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CDK4-IN-7
0 ImagesCat. No.: HY-184444CAS No.: 3113087-01-4CDK4-IN-7 is a CDK4 inhibitor with an IC50 of 26 nM. CDK4-IN-7 shows selectivity for CDK1, with an IC50 of 4.2262 μM. CDK4-IN-7 can be used in cancer research.
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Thio-acridone
0 ImagesThio-acridone (SACD) is a photosensitizer (HAF-PSs). Thio-acridone forms a long-lived triplet state upon excitation by 470 nm visible light,, ultimately generating singlet oxygen to damage the structures and functions of target cells such as cancer cells. Thio-acridone is promising for research of cancers. Thio-acridone is a CDK4/Cyclin D1 inhibitor (IC50 = 2 uM).
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PF-06842874
0 ImagesCat. No.: HY-172234CAS No.: 2516247-98-4PF-06842874 is a CDK4/Cyclin D1 and CDK6/Cyclin D3 inhibitor (Ki values are 62 and 130 nM, respectively). PF-06842874 can be used in the research of pulmonary arterial hypertension and cancer.
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CDKI-83
0 ImagesCat. No.: HY-123034CAS No.: 1189558-88-0CDKI-83 is a potent CDK9 and CDK1 inhibitor with Ki values of 21 nM and 72 nM for CDK9/T1 and CDK1/B, respectively. CDKI-83 demonstrates effective anti-proliferative activity in human tumour cell lines with a GI50<1 μM. CDKI-83 effectively induces apoptosis in A2780 human ovarian cancer cells. CDKI-83 reduces phosphorylation at Ser-2 of RNA polymerase II (RNAPII) by inhibiting cellular CDK9 activity, and down-regulates Mcl-1 and Bcl-2. CDKI-83 has the potential for anti-cancer research.
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LCI133
0 ImagesCat. No.: HY-179375CAS No.: 3065284-87-6LCI133 is afirst-in-class,nanomolar-potent, selective multikinase inhibitor targeting CDK4/6/9 and AURKA/B (IC50 = 4.7/10.2/4.1 nM and 2.8/10.6 nM). LCI133 induces S/G2 cell-cycle arrest and robust apoptosis in MYCN-amplified neuroblastoma BE(2)-C cells. LCI133 demonstrates significant antitumor efficacy in a BE(2)-C neuroblastoma xenograft model.
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CDK4/6-IN-21 maleate
0 ImagesCat. No.: HY-164376ACAS No.: 2765997-88-2
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CDK4/6-IN-20
0 ImagesCat. No.: HY-162530CAS No.: 3033950-84-1CDK4/6-IN-20 (Compound II-5) is a CDK4/CDK6 inhibitor with IC50 values of 1.9, 14.2 nM, respectively. CDK4/6-IN-20 also inhibits cell proliferation and can be used in cancer research.
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Palbociclib-C4-Boc
0 ImagesCat. No.: HY-176365CAS No.: 2139329-48-7Palbociclib-C4-Boc is a Target Protein Ligand-Linker Conjugate that incorporates a ligand for CDK4/6 Palbociclib (HY-50767) and a PROTAC linker (HY-W007803), which recruits E3 ligases. Palbociclib-C4-Boc can be used for synthesis of PROTAC BSJ-03-204 (HY-136250).
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G721-0282
0 ImagesG721-0282 is an orally active CHI3L1 inhibitor. G721-0282 can reduce the expression of inflammatory proteins and cytokines. G721-0282 inhibits the activation of the NF-κB signaling pathway. G721-0282 inhibits neuroinflammation and reduces anxious behavior. G721-0282 significantly inhibits the proliferation of osteosarcoma (OS) cells by suppressing the STAT3 signaling pathway. G721-0282 induces OS cell apoptosis by upregulating pro-apoptotic protein levels and downregulating anti-apoptotic protein levels. G721-0282 can be used for researches on neuroinflammatory conditions and cancer.
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VWK147
0 ImagesCat. No.: HY-181062VWK147 is a second-generation HSP90 C-terminal domain (CTD) inhibitor. VWK147 targets the CTD dimerization interface, prevents HSP90 CTD dimerization, disrupts co-chaperone PPID binding to HSP90 CTD, and inhibits HSP90 chaperone function dependent on dimerization. VWK147 reduces protein levels of HSP90 client proteins ULK1, RIPK1, and CDK4 without inducing a heat shock response. VWK147 induces cell death, including apoptosis, in Cisplatin (HY-17394)-sensitive and -resistant urothelial carcinoma cells. VWK147 induces LC3-II accumulation, inhibits autophagosome-lysosome fusion to block canonical autophagy, and induces non-canonical LC3 lipidation independent of ULK1 and PIK3C3 complexes. VWK147 can be used for the research of urothelial carcinoma.
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CDK2/4/6-IN-1
0 ImagesCat. No.: HY-148213CAS No.: 2803837-13-8CDK2/4/6-IN-1(example 29) is a CDK2/4/6 inhibitor with IC50 values of 2.5, 23.7 and 44.3 nM for CDK2, CDK4 and CDK6, respectively. CDK2/4/6-IN-1 can be used in cancer research. CDK2/4/6-IN-1 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
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Radicicol 6-oxime
0 ImagesCat. No.: HY-186321CAS No.: 501124-40-9Synonyms: KF25706Radicicol 6-oxime (KF25706) is an Hsp90 inhibitor with an EC50 of 5.5 nM against human Hsp90. Radicicol 6-oxime binds to Hsp90 and disrupts its chaperone function, leading to destabilization and depletion of Hsp90-associated signaling molecules. Radicicol 6-oxime depletes Hsp90-associated signaling proteins such as Raf-1, v-src, p185erbB2, Cdk4, and mutant p53, thereby inhibiting K-ras and v-src signaling pathways. Radicicol 6-oxime exhibits antiproliferative activity against various tumor cells. Radicicol 6-oxime inhibits tumor growth in mouse tumor xenograft models. Radicicol 6-oxime can be used for research on breast cancer, colon cancer, and vulvar epidermoid carcinoma.
