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Published on: December 30, 2025
Extract from Asteraceae Brachylaena ramiflora induces apoptosis preferentially in mutant p53-expressing human tumor
Masoud Karimi1, Francesca Conserva, Salah Mahmoudi
1Department of Oncology-Pathology, Cancer Center Karolinska, Karolinska University Hospital, Karolinska Institutet, SE-171 76, Stockholm, Sweden.
Abstract:
The p53 tumor suppressor gene is inactivated by point mutation in a large fraction of human tumors, allowing evasion of apoptosis and tumor progression. p53 mutation is often associated with increased resistance to therapy. Pharmacological reactivation of mutant p53 is an attractive therapeutic strategy. We previously identified p53 reactivation and induction of massive apoptosis, a low-molecular weight compound that suppresses the growth of cancer cells in a mutant p53-dependent manner. Here, we report the identification and characterization of an extract from the terrestrial plant Brachylaena ramiflora (Asteraceae) that preferentially induces apoptosis in human tumor cells expressing mutant p53. Further analysis of this extract and identification of active compounds may provide novel structural scaffolds for the development of mutant p53-targeting anticancer drugs.
Insights
Researchers discovered a plant extract from Brachylaena ramiflora that selectively triggers apoptosis in cancer cells with mutated p53. This finding offers a promising new avenue for developing targeted cancer therapies against mutant p53 tumors.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- The p53 tumor suppressor gene is frequently inactivated by mutation in human cancers, promoting tumor growth and therapy resistance.
- Restoring function to mutant p53 is a key therapeutic strategy for cancer treatment.
- Previous work identified a compound that reactivates p53 and induces apoptosis in a mutant p53-dependent manner.
Purpose of the Study:
- To identify and characterize novel therapeutic agents targeting mutant p53.
- To investigate the potential of natural products for cancer therapy.
Main Methods:
- Screening of plant extracts for anti-cancer activity.
- Testing the efficacy of Brachylaena ramiflora extract on human tumor cells expressing mutant p53.
- Induction of apoptosis assays.
Main Results:
- An extract from the terrestrial plant Brachylaena ramiflora selectively induced apoptosis in human tumor cells harboring mutant p53.
- The extract demonstrated preferential activity against cells with p53 mutations.
Conclusions:
- Brachylaena ramiflora extract represents a promising source for novel anti-cancer drug development targeting mutant p53.
- Further investigation into the active compounds within the extract may yield new structural scaffolds for therapeutic agents.
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