Pharmacologically potentials of different substituted coumarin derivatives

Int, Chem

doi:10.31221/osf.io/w6hdg

Cited by 1 publication

(3 citation statements)

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“…70% of all brain tumors. Due to their infiltrative nature, they are practically impossible to remove surgically [1,25]. Many…”

Section: Discussionmentioning

confidence: 99%

“…Coumarins, classified as secondary metabolites, constitute a large group of ubiquitous compounds in the plant world. Depending on the chemical structure, simple coumarins, pyranocoumarins, and furanocoumarins can be distinguished [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…They exhibit chemopreventive properties as well as cytotoxic and antiproliferative activity against cancer cells. In addition, they limit angiogenesis and prevent the formation of metastases to other tissues [1][2][3][4][5]. Clinical studies have shown that coumarins have promising activity against several types of cancer, such as breast cancer, lung cancer, malignant melanoma, prostate cancer and renal cell carcinoma [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Antiglioma Potential of Coumarins Combined with Sorafenib

et al. 2020

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Coumarins, which occur naturally in the plant kingdom, are diverse class of secondary metabolites. With their antiproliferative, chemopreventive and antiangiogenetic properties, they can be used in the treatment of cancer. Their therapeutic potential depends on the type and location of the attachment of substituents to the ring. Therefore, the aim of our study was to investigate the effect of simple coumarins (osthole, umbelliferone, esculin, and 4-hydroxycoumarin) combined with sorafenib (specific inhibitor of Raf (Rapidly Accelerated Fibrosarcoma) kinase) in programmed death induction in human glioblastoma multiforme (T98G) and anaplastic astrocytoma (MOGGCCM) cells lines. Osthole and umbelliferone were isolated from fruits: Mutellina purpurea L. and Heracleum leskowii L., respectively, while esculin and 4-hydroxycoumarin were purchased from Sigma Aldrich (St. Louis, MO, USA). Apoptosis, autophagy and necrosis were identified microscopically after straining with specific fluorochromes. The level of caspase 3, Beclin 1, PI3K (Phosphoinositide 3-kinase), and Raf kinases were estimated by immunoblotting. Transfection with specific siRNA (small interfering RNA) was used to block Bcl-2 (B-cell lymphoma 2), Raf, and PI3K expression. Cell migration was tested with the wound healing assay. The present study has shown that all the coumarins eliminated the MOGGCCM and T98G tumor cells mainly via apoptosis and, to a lesser extent, via autophagy. Osthole, which has an isoprenyl moiety, was shown to be the most effective compound. Sorafenib did not change the proapoptotic activity of this coumarin; however, it reduced the level of autophagy. At the molecular level, the induction of apoptosis was associated with a decrease in the expression of PI3K and Raf kinases, whereas an increase in the level of Beclin 1 was observed in the case of autophagy. Inhibition of the expression of this protein by specific siRNA eliminated autophagy. Moreover, the blocking of the expression of Bcl-2 and PI3K significantly increased the level of apoptosis. Osthole and sorafenib successfully inhibited the migration of the MOGGCCM and T98G cells.

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“…70% of all brain tumors. Due to their infiltrative nature, they are practically impossible to remove surgically [1,25]. Many…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%