scholarly journals Unveiling antioxidant and anti-cancer potentials of characterized annona reticulata leaf extract in 1,2-dimethylhydrazine-induced colorectal cancer in Wistar rats

Author(s):  
Nadeem Khan G ◽  
Nitesh Kumar ◽  
Abhijna Ballal R ◽  
Divya Datta ◽  
Vijetha Shenoy Belle
Author(s):  
Ramachandran K ◽  
Venketnarayanan R ◽  
Rajesh Yadav ◽  
Suresh R ◽  
Sumitra Devkota

Colorectal cancer is the second leading cause of cancer death in the United States for both men and women. The rate of colon cancer incidence was low in India but is presently increasing; out of 3.5 million cancer cases, 35,000 have colon cancer. Polyps which are the small growths in the colon are most often benign, even though some have the potentiality to become cancerous. Up to two-thirds of the colorectal polyps are pre-malignant and they are linked with a risk of colorectal cancer. About 60% of currently used anti-cancer agents are derived from a natural source (i.e. plants). In our study anti-cancer potential of the extract of Coldenia procumbens was studied and the synthesis of the anti-cancer moiety has been done. With the findings, it can be concluded that the plant Coldenia procumbens Linn and possess anti colorectal cancer activity. Before the clinical usage of extract, through toxicological profile has to be determined on the crude extracts as well as on isolated compounds to confirm the safety of the drug.


2021 ◽  
Vol 22 (16) ◽  
pp. 8481
Author(s):  
Silvia Vivarelli ◽  
Luca Falzone ◽  
Saverio Candido ◽  
Benjamin Bonavida ◽  
Massimo Libra

Colorectal cancer (CRC) is characterized by genetic heterogeneity and is often diagnosed at an advanced stage. Therefore, there is a need to identify novel predictive markers. Yin Yang 1 (YY1) is a transcription factor playing a dual role in cancer. The present study aimed to investigate whether YY1 expression levels influence CRC cell response to therapy and to identify the transcriptional targets involved. The diagnostic and prognostic values of YY1 and the identified factor(s) in CRC patients were also explored. Silencing of YY1 increased the resistance to 5-Fluorouracil-induced cytotoxicity in two out of four CRC cells with different genotypes. BCL2L15/Bfk pro-apoptotic factor was found selectively expressed in the responder CRC cells and downregulated upon YY1 knockdown. CRC dataset analyses corroborated a tumor-suppressive role for both YY1 and BCL2L15 whose expressions were inversely correlated with aggressiveness. CRC single-cell sequencing dataset analyses demonstrated higher co-expression levels of both YY1 and BCL2L15 within defined tumor cell clusters. Finally, elevated levels of YY1 and BCL2L15 in CRC patients were associated with larger relapse-free survival. Given their observed anti-cancer role, we propose YY1 and BCL2L15 as candidate diagnostic and prognostic CRC biomarkers.


Author(s):  
Folashade Sarah Ojeleye ◽  
Helen Ileigo Inabo ◽  
Clement Myah Zaman Whong ◽  
Bolanle Olufunke Priscilla Musa ◽  
Ochuko Orakpoghenor

Biomolecules ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 797 ◽  
Author(s):  
Yi Yang ◽  
Thanh Thi Nguyen ◽  
Iris Pereira ◽  
Jae-Seoun Hur ◽  
Hangun Kim

Secondary metabolites of lichens are promising bioresources for candidate anti-cancer drugs. Accordingly, several approaches have been proposed for screening these molecules for novel anti-cancer lead compounds. In this study, we found that a non-toxic concentration of physciosporin, a compound isolated from Pseudocyphellaria granulata, significantly decreased colony formation on soft agar and spheroid formation by CSC221 cancer stem-like cells. Physciosporin also decreased spheroid formation in other colorectal cancer cell lines, including DLD1, Caco2, and HT29. Aldehyde dehydrogenase-1 (ALDH1), the most important cancer stem marker, was sharply downregulated at both the protein and mRNA level following treatment with physciosporin. Physciosporin also decreased the transcriptional activity of the glioma-associated oncogene homolog zinc finger protein (Gli), as well as the Hes1 and CSL promoters, in reporter assays. Moreover, the drug significantly suppressed spheroid formation in CSC221 cells overexpressing Gli1/2 or ΔEN1 (an S2-cleaved but membrane-tethered form of human Notch1) but did not suppress spheroid formation in cells overexpressing both Gli1/2 and ∆EN1, suggesting that physciosporin suppresses colon cancer cell stemness through the Sonic hedgehog and Notch signaling pathways. Together, these results demonstrate for the first time that physciosporin is a potent inhibitor of colorectal cancer cell stemness.


Author(s):  
Thomas Nubila ◽  
NkoyoImelda Nubila ◽  
Ayodele Ukaejiofo ◽  
ElvisNeba Shu ◽  
ChukwubuzorU Okwuosa ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Alian Désiré Afagnigni ◽  
Maximilienne Ascension Nyegue ◽  
Chantal Florentine Ndoye Foe ◽  
Youchahou Njankouo Ndam ◽  
Frédéric Nico Njayou ◽  
...  

The present work was undertaken to evaluate antidiarrheal activity of ethanolic leaf extract of Dissotis multiflora (Sm) Triana (D. multiflora) on Shigella flexneri-induced diarrhea in Wistar rats and its subacute toxicity. Diarrhea was induced by oral administration of 1.2 × 109 cells/mL S. flexneri to rats. Antidiarrheal activity was investigated in rats with the doses of 111.42 mg/kg, 222.84 mg/kg, and 445.68 mg/kg. The level of biochemical parameters was assessed and organs histology examined by 14 days’ subacute toxicity. S. flexneri stool load decreased significantly in dose-dependent manner. The level of ALT increased (p<0.05) in male rats treated with the dose of 445.68 mg/kg while creatinine level increased in rats treated with both doses. In female rats, a significant decrease (p<0.05) of the level of AST and creatinine was noted in rats treated with the dose of 222.84 mg/kg of D. multiflora. Histological exams of kidney and liver of treated rats showed architectural modifications at the dose of 445.68 mg/kg. This finding suggests that D. multiflora leaf extract is efficient against diarrhea caused by S. flexneri but the treatment with doses lower than 222.84 mg/kg is recommended while further study is required to define the exact efficient nontoxic dose.


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