Modulation of the PI3K/Akt signaling pathway by steroidal saponins: therapeutic implications in cancer

Mohammad Bagher Majnooni1, Maryam Naseri2, Shayan Bakhshy-Chenary2

  • 1Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.

Abstract

Insights

Steroidal saponins (SSs) show promise in targeting the phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) pathway for cancer treatment, offering an alternative to conventional therapies. Further research is needed to overcome limitations for clinical application.

Area of Science:

  • Natural product chemistry
  • Molecular oncology
  • Pharmacology

Background:

  • The phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) pathway is crucial for cancer cell proliferation, survival, metastasis, and angiogenesis.
  • Conventional targeted therapies often face resistance, limiting their effectiveness against cancer.
  • Steroidal saponins (SSs) are natural compounds with recognized anticancer properties, targeting multiple cellular pathways.

Purpose of the Study:

  • To synthesize current evidence on how steroidal saponins (SSs) modulate the PI3K/Akt pathway for anticancer effects.
  • To outline translational opportunities and limitations for SSs in cancer therapy.

Main Methods:

  • A comprehensive review of preclinical and translational studies was conducted.
  • Studies indexed in PubMed, Scopus, and Google Scholar up to August 2025 were included.
  • Data on SSs modulating the PI3K/Akt/mTOR axis (in vitro, in vivo, ex vivo) were compiled and organized.

Main Results:

  • Steroidal saponins (SSs) demonstrate potential in targeting the PI3K/Akt pathway to combat cancer progression.
  • SSs induce apoptosis, inhibit metastasis and angiogenesis, and modulate the tumor microenvironment.
  • SSs can reverse multidrug resistance by modulating the PI3K/Akt pathway and enhance immune response.

Conclusions:

  • Emerging preclinical evidence supports combining SSs with chemotherapeutics for novel anticancer therapies.
  • Clinical development of SSs is hindered by low bioavailability, systemic toxicity, and lack of target specificity.

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