Double-Edged Swords as Cancer Therapeutics: Novel, Orally Active, Small Molecules Simultaneously Inhibit p53–MDM2 Interaction and the NF-κB Pathway
摘要:
Simultaneous inactivation of p53 and hyperactivation of nuclear factor-kappa B (NF-kappa B) is a common occurrence in human cancer. Currently, antitumor agents are being designed to selectively activate p53 or inhibit NF-kappa B. However, there is no concerted effort yet to deliberately design inhibitors that can simultaneously do both. This paper provided a proof-of-concept study that p53-MDM2 interaction and NF-kappa B pathway can be simultaneously targeted by a small-molecule inhibitor. A series of pyrrolo[3,4-c]pyrazole derivatives were rationally designed and synthesized as the first-in-class inhibitors of p53-MDM2 interaction and NF-kappa B pathway. Most of the compounds were identified to possess nanomolar p53-MDM2 inhibitory activity. Compounds 5q and 5s suppressed NF-kappa B activation through inhibition of I kappa B alpha phosphorylation and elevation of the cytoplasmic levels of p65 and phosphorylated IKK alpha/beta. Biochemical assay for the kinases also supported the fact that pyrrolo[3,4-c]pyrazole compounds directly targeted the NF-kappa B pathway. In addition, four compounds (5j, 5q, 5s, and 5u) effectively inhibited tumor growth in the A549 xenograft model. Further pharmacokinetic study revealed that compound 5q exhibited excellent oral bioavailability (72.9%).
COMPOSITIONS AND METHODS FOR TREATING SENESCENCE-ASSOCIATED DISEASES AND DISORDERS
申请人:Unity Biotechnology, Inc.
公开号:US20180193458A1
公开(公告)日:2018-07-12
Methods are provided herein for selectively killing senescent cells and for treating senescence-associated diseases and disorders by administering a senolytic agent. Senescence-associated diseases and disorders treatable by the methods using the senolytic agents described herein include cardiovascular diseases and disorders associated with or caused by arteriosclerosis, such as atherosclerosis; idiopathic pulmonary fibrosis; chronic obstructive pulmonary disease; osteoarthritis; senescence-associated ophthalmic diseases and disorders; and senescence-associated dermatological diseases and disorders. Also included herein are methods for extending lifespan.
PROTOCOL FOR INCREASING LIFE EXPECTANCY IN A TEST SUBJECT
申请人:Mayo Foundation for Medical Education and Research
公开号:US20190022225A1
公开(公告)日:2019-01-24
Methods are provided herein for selectively killing senescent cells and for treating senescence-associated diseases and disorders by administering a senolytic agent. Senescence-associated diseases and disorders treatable by the methods using the senolytic agents described herein include cardiovascular diseases and disorders associated with or caused by arteriosclerosis, such as atherosclerosis; idiopathic pulmonary fibrosis; chronic obstructive pulmonary disease; osteoarthritis; senescence-associated ophthalmic diseases and disorders; and senescence-associated dermatological diseases and disorders. Also included herein are methods for extending lifespan.