Light-Activated Plant Compounds and Doxorubicin for Treating Muscle Cancer Cells

Jenn Hoskins
16th July, 2024

Light-Activated Plant Compounds and Doxorubicin for Treating Muscle Cancer Cells

Photodynamic therapy setup used in the study.

Image adapted from: Javaid et al. / CC BY (Source)

Key Findings

  • Researchers at Quaid-i-Azam University, Islamabad, found that combining photodynamic therapy (PDT) and chemotherapy (Dox-HCl) with plant extracts can effectively treat Rhabdomyosarcoma (RMS) cells
  • The study showed that Moringa oleifera extract significantly enhanced the cancer-killing effects of PDT and Dox-HCl
  • This combined treatment approach could reduce chemotherapy side effects while improving treatment outcomes for RMS
Soft tissue sarcomas (STS), including Rhabdomyosarcoma (RMS), present significant treatment challenges, especially in pediatric populations. Recent research from Quaid-i-Azam University, Islamabad, Pakistan, has explored innovative combinational therapies to address these challenges[1]. The study investigated the cytotoxic potential of combining photodynamic therapy (PDT) and chemotherapy (doxorubicin hydrochloride; Dox-HCl) with various medicinal plant extracts on the Rhabdomyosarcoma (RD) cell line. Photodynamic therapy (PDT) is a minimally invasive treatment that uses a drug (photosensitizer) activated by light to kill cancer cells[2]. While PDT has shown promise, its efficacy can be enhanced by combining it with other treatments. Doxorubicin (Dox), a chemotherapy drug, is commonly used to treat various cancers, including RMS. However, Dox alone can have significant side effects. Combining Dox with other treatments could potentially improve outcomes and reduce side effects. In this study, the researchers cultured the RD cell line and treated it with a photosensitizer (Photosense (AlPc4)), Dox-HCl, and their combinations with different concentrations of plant extracts from Thuja occidentalis, Moringa oleifera, and Solanum surattense. The photosensitizer uptake time was optimized using spectrophotometric measurements, and the drug response was assessed 24 hours post-administration using the MTT assay. The results showed that combining plant extracts with PDT and Dox-HCl exhibited synergistic effects, meaning the combined treatment was more effective than the sum of its parts. Among the plant extracts, Moringa oleifera showed the most significant inhibition of cancer cell viability. This suggests that Moringa oleifera could enhance the effectiveness of PDT and Dox-HCl in treating RMS. Previous studies have also highlighted the potential of combinational therapies in cancer treatment. For instance, research has shown that berberine, a plant alkaloid, combined with Dox, significantly inhibited melanoma tumor growth in vitro and in vivo[3]. Similarly, luteolin, another plant-derived compound, has been shown to sensitize breast cancer cells to Dox, improving treatment outcomes under hypoxic conditions[4]. These findings align with the current study's results, emphasizing the potential of plant-mediated combinational therapies in cancer treatment. The study from Quaid-i-Azam University demonstrates that higher doses of plant extracts promote cancer cell death in a dose-dependent manner. Moreover, combining Dox-HCl with photo-mediated PDT yielded better therapeutic outcomes. This approach could potentially reduce the side effects associated with high doses of chemotherapy while enhancing treatment efficacy. The findings from this study are promising for the future of RMS treatment. By combining traditional chemotherapy with PDT and plant extracts, it may be possible to develop more effective and less toxic treatment regimens. This approach could also be explored for other types of soft tissue sarcomas, as ongoing research continues to identify new targeted agents and combinational therapies[5]. In conclusion, the study from Quaid-i-Azam University provides valuable insights into the potential of plant-mediated combinational therapies for treating Rhabdomyosarcoma. By leveraging the synergistic effects of PDT, chemotherapy, and plant extracts, this approach could offer a more effective and less toxic alternative to conventional cancer treatments.

MedicineBiochemPlant Science

References

Main Study

1) Photoactive metabolite mediated photodynamic therapy of Rhabdomyosarcoma cell lines using medicinal plants and Doxorubicin co-treatments.

Published 15th July, 2024

https://doi.org/10.1186/s12906-024-04575-2

Related Studies

2) Photodynamic therapy and cancer: a brief sightseeing tour.

Journal: Expert opinion on drug delivery, Issue: Vol 4, Issue 2, Mar 2007

3) Berberine in combination with doxorubicin suppresses growth of murine melanoma B16F10 cells in culture and xenograft.

https://doi.org/10.1016/j.phymed.2013.09.002

4) Luteolin as a glycolysis inhibitor offers superior efficacy and lesser toxicity of doxorubicin in breast cancer cells.

https://doi.org/10.1016/j.bbrc.2008.05.080

5) Children's Oncology Group's 2013 blueprint for research: Soft tissue sarcomas.

https://doi.org/10.1002/pbc.24435


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