In this study, we investigate the potential of methanol leaf extract (MeOHL) on calpain activity, melanin biosynthesis and DNA mutagenicity. Cytotoxic effect and measurement of reactive oxygen species (ROS) induced by lucigenin in colorectal cells (BE) were also determined. In addition, the chemical analysis of the extract was also studied and the chemical profile illustrates its content in para-hydroxybenzoic acid (-HBA), a glycosylated kampferol (GK), a glycosylated kampferol with Rhamnose (GKR) and 19 amino acids (AAs). Our results showed that MeOHL extract enhanced a significant cytotoxic (max of IP = 89.23%) and antioxidant (max of IP=100%) activities. Furthermore, the tested extract stimulated calpain activity and significantly increased the production of intra (46 µg/mL cells) and extracellular melanin content (12.5µg/mL). Using Ames assay, the extract exhibits a significant inhibition of mutagenicity induced by methy-methane-sulfonate (MMS) (76.32%) as well as 2-aminoanthracene (2-AA) (91%) in the TA104 assay system.
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Ren Fail
December 2025
Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China.
Macrophages play a vital role in the inflammation and repair processes of ischemia/reperfusion-induced acute kidney injury (IR-AKI). The mechanosensitive ion channel Piezo1 is significant in these inflammatory processes. However, the exact role of macrophage in IR-AKI is unknown.
View Article and Find Full Text PDFAm J Physiol Cell Physiol
January 2025
Department of Physiology (Cellular Physiology Research Group),Institute of Molecular Pathology Biomarkers (IMPB), University of Extremadura, 10003-Caceres, Spain.
Filamin A (FLNA) is an actin-binding protein that has been reported to interact with STIM1 modulating the activation of Orai1 channels. Cleaving of FLNA by calpain leads to a C-terminal fragment that is involved in a variety of functional and pathological events, including pro-oncogenic activity in different types of cancer. Here we show that full-length FLNA is downregulated in samples from colon cancer patients as well as in the adenocarcinoma cell line HT-29.
View Article and Find Full Text PDFJ Cancer
January 2025
Cyrus Tang Medical Institute, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China.
Growth arrest specific 2 (GAS2) is a microfilament-associated protein, which is widely distributed in human tissues. It exerts a pivotal influence on various cellular processes, including cytoskeletal regulation, cell cycle progression, apoptosis, and senescence. GAS2 has a dual function in cancer cell growth: on the one hand, it enhances the sensitivity of cancer cells to chemoradiotherapy and prevents malignant transformation of normal cells; but on the other hand, it maintains the growth of cancer cells.
View Article and Find Full Text PDFSci Adv
January 2025
Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany.
The athlete's paradox states that intramyocellular triglyceride accumulation associates with insulin resistance in sedentary but not in endurance-trained humans. Underlying mechanisms and the role of muscle lipid distribution and composition on glucose metabolism remain unclear. We compared highly trained athletes (ATHL) with sedentary normal weight (LEAN) and overweight-to-obese (OVWE) male and female individuals.
View Article and Find Full Text PDFMol Biomed
December 2024
Department of Clinical Laboratory, Shanghai Cancer Center, Fudan University, Shanghai, 200032, China.
Lenvatinib, an approved first-line regimen, has been widely applied in hepatocellular carcinoma (HCC). However, clinical response towards Lenvatinib was limited, emphasizing the importance of understanding the underlying mechanism of its resistance. Herein, we employed integrated bioinformatic analysis to identify calpain-2 (CAPN2) as a novel key regulator for Lenvatinib resistance in HCC, and its expression greatly increased in both Lenvatinib-resistant HCC cell lines and clinical samples.
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