[EN] METHOD OF SENSITIZING CANCER CELLS TO THE CYTOTOXIC EFFECTS OF APOPTOSIS INDUCING LIGANDS IN CANCER TREATMENT<br/>[FR] MÉTHODE DE SENSIBILISATION DE CELLULES CANCÉREUSES AUX EFFETS CYTOTOXIQUES DE LIGANDS INDUISANT L'APOPTOSE DANS LE TRAITEMENT DU CANCER
申请人:US HEALTH
公开号:WO2017139485A1
公开(公告)日:2017-08-17
Disclosed is a method of enhancing the response of cancer cells in a mammal to treatment with an apoptosis inducing ligand, which method comprises contacting the cancer cells with an apoptosis inducing ligand in conjunction with an effective amount of a compound of the formula: (I), wherein R1-R14 are as described herein. Also disclosed is a method of inducing apoptosis in cancer cells in a mammal, comprising contacting the cancer cells with the compound described herein and also contacting the cancer cells with an apoptosis inducing ligand, whereby apoptosis is induced in the cancer cells.
Withaperuvin E and nicandrin B, withanolides from physalis peruviana and nicandra physaloides
作者:Anjana Bagchi、Partha Neogi、Mahendra Sahai、Anil B. Ray、Yoshiteru Oshima、Hiroshi Hikino
DOI:10.1016/s0031-9422(00)85041-4
日期:1984.4
Abstract Novel withanolides, withaperuvin E and nicandrin B, isolated respectively, from Physalisperuviana and Nicandra physaloides , were fully characterized by chemical and spectroscopic means.
摘要 分别从Physalis peruviana 和Nicandra physaloides 中分离得到的新型withanolides,withaperuvin E 和nicandrin B,通过化学和光谱手段进行了充分的表征。
17β-Hydroxywithanolides as Sensitizers of Renal Carcinoma Cells to Tumor Necrosis Factor-α Related Apoptosis Inducing Ligand (TRAIL) Mediated Apoptosis: Structure–Activity Relationships
作者:Ya-Ming Xu、Alan D. Brooks、E. M. Kithsiri Wijeratne、Curtis J. Henrich、Poonam Tewary、Thomas J. Sayers、A. A. Leslie Gunatilaka
DOI:10.1021/acs.jmedchem.7b00069
日期:2017.4.13
Renal cell carcinoma (RCC) is a cancer with poor prognosis, and the 5-year survival rate of patients with metastatic RCC is 5-10%. Consequently, treatment of metastatic RCC represents an unmet clinical need. Screening of a 50 000 member library of natural and synthetic compounds for sensitizers of RCC cells to TRAIL-mediated apoptosis led to identification of the 17 beta-hydroxywithanolide (17-BHW), withanolide E (1), as a promising lead. To explore structure-activity relationships, we obtained natural and semisynthetic withanolides 1, 2a, 2c, and 3-36 and compared their ability to sensitize TRAIL-mediated apoptosis in a panel of renal carcinoma cells. Our findings revealed that 17-BHWs with a alpha-oriented side chain are superior to known TRAIL-sensitizing withanolides belonging to withaferin A class with a beta-oriented side chain and demonstrated that the 17-BHW scaffold can be modified to enhance sensitization of RCCs to TRAIL-mediated apoptosis, thereby assisting development of natural-product-inspired drugs to treat metastatic RCC.
Isolation and characterisation of irinans, androstane-type withanolides from <i>Physalis peruviana</i> L.
Withanolides are steroidal lactones widespread in Nightshade plants with often potent antiproliferative activities. Additionally, the structural diversity of this compound class holds much potential for the discovery of novel biological activity. Here, we report two newly characterised withanolides, named irinans, from Physalisperuviana with highly unusual truncated backbones that resemble mammalian