Monday, July 13, 2020 8:05:28 AM
2020-07-13 07:00 ET - News Release
-- Characterization of fadraciclib published in peer-reviewed journal shows specificity against
CDK2 and CDK9 and enablement of apoptosis of cancer cells driven by MCL1, cyclin E and/or MYC –
-- Data builds on growing body of evidence indicating the promise of dual CDK2/9 inhibition --
BERKELEY HEIGHTS, N.J. and DUNDEE, United Kingdom, July 13, 2020 (GLOBE NEWSWIRE) -- Cyclacel Pharmaceuticals, Inc. (Nasdaq: CYCC) (Nasdaq: CYCCP) (Cyclacel or the Company), a biopharmaceutical company developing innovative medicines based on cancer cell biology, today announced publication of a peer-reviewed study of fadraciclib, in PLOS ONE. The publication, authored by scientists from Cyclacel and The Institute of Cancer Research, London, describes the discovery of fadraciclib and shows its ability to target CDK2 and CDK9, leading to broad therapeutic potential.
“The published findings strengthen the mechanistic rationale for fadraciclib’s potential as an anti-cancer therapy. Building upon previous research in CDK pathways, including the roles of cyclin E, MCL1 and MYC overexpression, the paper highlights the benefits of inhibiting both CDK2 and CDK9, two complementary cancer pathways,” said Spiro Rombotis, President and Chief Executive Officer of Cyclacel. “Independent findings reported at the ASCO20 Virtual Scientific Program corroborate the attractiveness of this dual targeting approach. Based on recently disclosed clinical data fadraciclib is establishing a leadership position among apoptosis enabling compounds in clinical development. We are encouraged by observations of single agent anticancer activity in our clinical studies. Initial clinical data with oral fadraciclib show concordance with intravenous pharmacokinetics. In parallel with evaluating fadraciclib in patients with acute myeloid leukaemia (AML) and myelodysplastic syndromes (MDS), we are executing a precision medicine strategy to evaluate fadraciclib in patients with solid tumors, with study enrollment expected to begin by Q1 2021.”
“These exciting new findings revealing fadraciclib’s chemical structure and describing its relevant anti-cancer properties, reflect the highly productive collaboration of ICR with Cyclacel to discover and develop innovative cancer treatments,” said Professor Paul Workman, FMedSci, FRS, study co-author and Chief Executive and President, The Institute of Cancer Research, London, UK. “As a potent and selective inhibitor of CDK2 and CDK9, we believe our cumulative findings to-date support fadraciclib’s ability to address key cancer pathways in solid tumors and leukaemias, indicating its potential as a new targeted anti-cancer therapy.”
Cyclin-dependent kinases (CDKs) exist in many isoforms and as key cell cycle regulators can play a critical role in cancer growth. This preclinical characterization of fadraciclib includes its potency and selectivity against CDK2 and CDK9 in vitro and in a broad range of cancer cell lines including AML, breast and colorectal. Further in vivo efficacy was demonstrated in leukemia xenograft models.
Experimental results support fadraciclib’s anti-cancer activity through CDK2/9 inhibition. In breast cancer cell lines, short-pulse treatment with fadraciclib showed preferential activity against transformed cells over normal cells. This finding supports the compound’s potential benefit in cancers addicted to cyclin E which can be rationally targeted by CDK2 inhibition. In AML models, fadraciclib was effective in inhibiting CDK9 and suppressing the MCL1 protein to induce apoptosis or programmed cell death of leukemia cells. Fadraciclib also demonstrated synergy with BCL2 inhibitors such as venetoclax in AML cells. In subcutaneous mouse xenograft models of AML and MLLr-AML, nearly 100% tumor growth inhibition was achieved with oral administration of fadraciclib at pharmacological doses.
History.htm
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