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Chemical Structure| 1070790-89-4 Chemical Structure| 1070790-89-4

Structure of Fadraciclib
CAS No.: 1070790-89-4

Chemical Structure| 1070790-89-4

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Fadraciclib, also known as CYC065, is an orally bioavailable inhibitor of cyclin dependent kinases 2, 5 and 9 (CDK2/5/9) with potential antineoplastic and chemoprotective activities. CYC065 selectively binds to and inhibits the activity of CDK2, 5 and 9, which leads to inhibition of CDK2, 5 and 9-dependent cellular pathways, downregulation of genes involved in the pro-survival pathway, prevention of the activation of DNA double-strand break repair pathways, and induction of both cell cycle arrest and apoptosis. This inhibits the proliferation of CDK2/5/9-overexpressing tumor cells. In addition, CYC065 protects hematopoietic stem and progenitor cells (HSPCs), prevents myelosuppression, and preserves the function of the bone marrow.

Synonyms: CYC065

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Product Details of Fadraciclib

CAS No. :1070790-89-4
Formula : C21H31N7O
M.W : 397.52
SMILES Code : C[C@@H](O)[C@@H](NC1=NC(NCC2=C(C)C=C(C)N=C2)=C3N=CN(C(C)C)C3=N1)CC
Synonyms :
CYC065
MDL No. :MFCD31693062
InChI Key :DLPIYBKBHMZCJI-WBVHZDCISA-N
Pubchem ID :24983461

Safety of Fadraciclib

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Related Pathways of Fadraciclib

Hedgehog

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
H2122 1 μM 48 hours Growth inhibition up to 88.5% ± 6.4%, induced G2/M arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
BE(2)C cells 1 μM 8 hours Induction of apoptosis J Clin Invest. 2020 Nov 2;130(11):5875-5892
Hop62 1 μM 48 hours Growth inhibition up to 55.7% ± 7.6%, induced G1 arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
A549 1 μM 48 hours Growth inhibition up to 71.5% ± 3.6%, induced G2/M arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
H1703 1 μM 48 hours Growth inhibition up to 31.6% ± 5.0%, induced G2/M arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
H522 1 μM 48 hours Growth inhibition up to 33.6% ± 6.6%, induced G2/M arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
B lymphocytes from healthy donors 0.1–1.5 μM 24 hours Fadraciclib showed similar sensitivity to B lymphocytes from healthy donors, while being less sensitive to T cells and other peripheral blood mononuclear cells (neither B nor T cells), indicating selective B cell toxicity. Leukemia. 2022 Jun;36(6):1596-1608
primary chronic lymphocytic leukemia (CLL) cells 0.1–1.5 μM 6 and 24 hours Fadraciclib inhibited CDK9, reducing RNA Pol II phosphorylation and blocking transcription, leading to depletion of Mcl-1 protein and induction of apoptosis. In simulated bone marrow and lymph node microenvironments, Fadraciclib efficiently abrogated the protective effect on CLL cells. Leukemia. 2022 Jun;36(6):1596-1608
MV4–11 0.52 ± 0.01 µM 72 hours Fadraciclib induces apoptosis in MV4–11 cells, increases the subG0 population, and reduces metabolic activity Cell Death Discov. 2021 Jun 10;7(1):137
MOLM-13 0.25 ± 0.01 µM 72 hours Fadraciclib induces apoptosis in MOLM-13 cells, increases the subG0 population, and reduces metabolic activity Cell Death Discov. 2021 Jun 10;7(1):137
OCI-AML3 0.44 ± 0.01 µM 72 hours Fadraciclib induces apoptosis in OCI-AML3 cells, increases the subG0 population, and reduces metabolic activity Cell Death Discov. 2021 Jun 10;7(1):137
SH-EP cells 1 μM 6-8 hours Growth inhibition J Clin Invest. 2020 Nov 2;130(11):5875-5892
393P 1 μM 48 hours Growth inhibition up to 44.6% ± 5.8%, induced G1 arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
LKR13 1 μM 48 hours Growth inhibition up to 51.8% ± 5.8%, induced G1 arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
ED1 1 μM 48 hours Growth inhibition up to 33.0% ± 1.0%, induced G1 arrest J Natl Cancer Inst. 2017 Jun 1;109(6):djw297
Kelly cells 1 μM 1-8 hours Reduction in MYCN protein expression and induction of apoptosis J Clin Invest. 2020 Nov 2;130(11):5875-5892
USC-ARK-6 100-500 nM 72 hours Evaluate the inhibitory effect of CYC065 on USC cell lines, finding CCNE1-low expressing cells less sensitive to CYC065 Br J Cancer. 2016 Jul 26;115(3):303-11
USC-ARK-4 100-500 nM 72 hours Evaluate the inhibitory effect of CYC065 on USC cell lines, finding CCNE1-low expressing cells less sensitive to CYC065 Br J Cancer. 2016 Jul 26;115(3):303-11
Mouse primary cortical neurons 3 μM 96 hours To evaluate the effects of CYC065 and THZ1 on normal neuronal cells, results showed that the inhibitors did not significantly affect neuronal viability or neurite outgrowth. Cell Death Dis. 2021 Aug 3;12(8):763
USC-ARK-7 100-500 nM 72 hours Evaluate the inhibitory effect of CYC065 on USC cell lines, finding CCNE1-overexpressing cells more sensitive to CYC065 Br J Cancer. 2016 Jul 26;115(3):303-11
Patient-derived GBM gliomaspheres 3 μM 72 hours To assess the anti-tumor efficacy of CYC065 and THZ1 in patient-derived GBM gliomaspheres, results showed that most gliomaspheres exhibited viability loss and apoptosis after treatment. Cell Death Dis. 2021 Aug 3;12(8):763
USC-ARK-2 100-500 nM 72 hours Evaluate the inhibitory effect of CYC065 on USC cell lines, finding CCNE1-overexpressing cells more sensitive to CYC065 Br J Cancer. 2016 Jul 26;115(3):303-11
U87 and U343 cells 3 μM 72 hours To evaluate the anti-tumor potential of CYC065 and THZ1 in GBM cell lines, results showed that both inhibitors significantly reduced cell viability and increased apoptotic cell death. Cell Death Dis. 2021 Aug 3;12(8):763
USC-ARK-1 100-500 nM 72 hours Evaluate the inhibitory effect of CYC065 on USC cell lines, finding CCNE1-overexpressing cells more sensitive to CYC065 Br J Cancer. 2016 Jul 26;115(3):303-11
GTCC-10 cells 100 nM 120 hours Evaluate the effect of THZ1 on apoptosis in GTCC-10 cells, results showed THZ1 significantly induced apoptosis Cells. 2021 May 12;10(5):1182
GTCC-9 cells 100 nM 120 hours Evaluate the effect of THZ1 on apoptosis in GTCC-9 cells, results showed THZ1 significantly induced apoptosis Cells. 2021 May 12;10(5):1182
GTCC-10 cells 3 µM 120 hours Evaluate the effect of CYC065 on apoptosis in GTCC-10 cells, results showed CYC065 significantly induced apoptosis Cells. 2021 May 12;10(5):1182
GTCC-9 cells 3 µM 120 hours Evaluate the effect of CYC065 on apoptosis in GTCC-9 cells, results showed CYC065 significantly induced apoptosis Cells. 2021 May 12;10(5):1182
BT224-luc2 human GBM neurospheres 5 μM 24 hours, 48 hours, and 96 hours To assess the effect of CYC065 on neurosphere diameter. CYC065 treatment significantly reduced neurosphere diameter. Cancers (Basel). 2019 Dec 12;11(12):2005

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
Mice BRCA1 mutant PDX models Oral gavage 25 mg/kg fadraciclib, 50 mg/kg olaparib 5 days/week for 8 weeks Tumor regression and increased survival NPJ Breast Cancer. 2021 Aug 31;7(1):111
Mice Kelly NB tumor xenografts Oral 75 mg/kg/d 5 days on, 2 days off for 3 weeks Significant tumor growth inhibition J Clin Invest. 2020 Nov 2;130(11):5875-5892
SCID mice USC-ARK-2 and USC-ARK-1 xenograft models Oral gavage 22.5 mg/kg CYC065 once daily for 3 weeks; Taselisib 5 days a week for 3 weeks Evaluate the anti-tumor effects of CYC065 and Taselisib alone or in combination on USC xenograft models, with combination therapy significantly inhibiting tumor growth Br J Cancer. 2016 Jul 26;115(3):303-11
Chick embryo Chick embryo xenograft model Topical administration 3 μM Single dose, lasting 4 days To assess the anti-tumor efficacy of CYC065 and THZ1 in the chick embryo xenograft model, results showed that the inhibitors significantly inhibited tumor growth and increased apoptotic marker expression. Cell Death Dis. 2021 Aug 3;12(8):763

Clinical Trial:

NCT Number Conditions Phases Recruitment Completion Date Locations
NCT04983810 Solid Tumor, Adult|Lymphoma PHASE1|PHASE2 RECRUITING 2025-06-30 City of Hope, Duarte, Californ... More >>ia, 91010, United States|MD Anderson Cancer Center, Houston, Texas, 77030, United States|Seoul National University Hospital, Seoul, Korea, Republic of|Hospital Universitario Vall d'Hebron, Barcelona, Spain Less <<
NCT02552953 Cancer PHASE1 COMPLETED 2023-08-25 Dana-Farber Cancer Institute, ... More >>Boston, Massachusetts, 02215, United States Less <<
NCT05817890 Healthy EARLY_PHASE1 COMPLETED 2024-05-22 Labcorp Clinical Research Unit... More >>, Madison, Wisconsin, 53704, United States Less <<

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

2.52mL

0.50mL

0.25mL

12.58mL

2.52mL

1.26mL

25.16mL

5.03mL

2.52mL

References

 

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