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Venkatarame Gowda Saralamma, Venu,Nagappan, Arulkumar,Hong, Gyeong Eun,Lee, Ho Jeong,Yumnam, Silvia,Raha, Suchismita,Heo, Jeong Doo,Lee, Sang Joon,Lee, Won Sup,Kim, Eun Hee,Kim, Gon Sup MDPI 2015 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.16 No.9
<P>Poncirin, a natural bitter flavanone glycoside abundantly present in many species of citrus fruits, has various biological benefits such as anti-oxidant, anti-microbial, anti-inflammatory and anti-cancer activities. The anti-cancer mechanism of Poncirin remains elusive to date. In this study, we investigated the anti-cancer effects of Poncirin in AGS human gastric cancer cells (gastric adenocarcinoma). The results revealed that Poncirin could inhibit the proliferation of AGS cells in a dose-dependent manner. It was observed Poncirin induced accumulation of sub-G1 DNA content, apoptotic cell population, apoptotic bodies, chromatin condensation, and DNA fragmentation in a dose-dependent manner in AGS cells. The expression of Fas Ligand (FasL) protein was up-regulated dose dependently in Poncirin-treated AGS cells Moreover, Poncirin in AGS cells induced activation of Caspase-8 and -3, and subsequent cleavage of poly(ADP-ribose) polymerase (PARP). Inhibitor studies’ results confirm that the induction of caspase-dependent apoptotic cell death in Poncirin-treated AGS cells was led by the Fas death receptor. Interestingly, Poncirin did not show any effect on mitochondrial membrane potential (ΔΨm), pro-apoptotic proteins (Bax and Bak) and anti-apoptotic protein (Bcl-xL) in AGS-treated cells followed by no activation in the mitochondrial apoptotic protein caspase-9. This result suggests that the mitochondrial-mediated pathway is not involved in Poncirin-induced cell death in gastric cancer. These findings suggest that Poncirin has a potential anti-cancer effect via extrinsic pathway-mediated apoptosis, possibly making it a strong therapeutic agent for human gastric cancer.</P>
Venkatarame Gowda Saralamma, Venu,Lee, Ho Jeong,Hong, Gyeong Eun,Park, Hyeon Soo,Yumnam, Silvia,Raha, Suchismita,Lee, Won Sup,Kim, Eun Hee,Sung, Nak Ju,Lee, Sang Joon,Heo, Jeong Doo,Kim, Gon Sup D.A. Spandidos 2017 Oncology letters Vol.14 No.1
<P>Korean <I>Scutellaria baicalensis</I> Georgi has been widely used in Korean folk medicines for its range of medicinal benefits, including its anticancer effect. The aim of the present study was to investigate the underlying molecular mechanism of action of a flavonoid extract from Korean <I>Scutellaria baicalensis</I> Georgi (FSB) on AGS human gastric cancer cells (gastric adenocarcinoma) in which FSB exhibits an anticancer effect. Treatment of AGS cells with FSB significantly inhibited cell viability in a concentration-dependent manner. Furthermore, FSB significantly increased the proportion of cells in sub-G1 phase, and Annexin V and Hoechst 33258 fluorescent staining confirmed the apoptotic cell death. Furthermore, western blotting results identified that treatment of AGS cells with FSB significantly downregulated the expression of caspase family members, namely procaspases 3 and 9, and poly(ADP-ribose) polymerase (PARP), and subsequently upregulated cleaved caspase 3 and cleaved PARP. It was observed that FSB treatment significantly decreased the mitochondrial membrane potential of AGS cells. In addition, the ratio of the mitochondrion-associated proteins B cell lymphoma 2-associated X protein and B cell lymphoma extra large was upregulated. The results of the present study provide novel insight into the underlying molecular mechanism of the anticancer effects of FSB on AGS human gastric cancer cells and indicate that FSB may be an alternative chemotherapeutic agent for the treatment of gastric cancer.</P>
Flavonoids: A new generation molecule to stimulate programmed cell deaths in cancer cells.
Venu Venkatarame Gowda Saralamma,Eun Hee Kim,Ho Jeong Lee,Suchismita Raha,Won Sup Lee,Jeong Doo Heo,Sang Joon Lee,Chun-Kil Won,Gon-Sup Kim 충북대학교 동물의학연구소 2017 Journal of Biomedical and Translational Research Vol.18 No.1
Programmed cell death (PCD) is decisive in eliminating affected cells in human cancers, whereas there are increasing cases of cancer-related death due to side effects of modern treatment methods. There is an urge for new methods of growth inhibition and elimination of cancer cells with a lower cytotoxicity to normal cells. Irregularity along PCD pathways plays a crucial role in cancer cell carcinogenesis. Apoptosis is a distinct cell death mechanism occurring in multicellular organisms and also called type one programmed cell death. Autophagy and paraptosis are non-apoptotic PCD occurring in multicellular organisms. Natural compounds are the fundament of pharmacological treatments, and flavonoids are natural polyphenolic compounds which are unique due to their diverse chemical structures and various biological active mechanisms like anticancer, anti-inflammatory, antioxidative and much more. This gives an increasing number of studies indicating that some flavonoids from medicinal plants could be promising candidates for new natural anticancer drugs, which attract high interests of academic researchers and advanced users. An understanding of the underlying mechanism of PCD induced by flavonoids in cancer cells is important as it plays a pivotal role in the pathogenesis of many diseases. This systematic review is to report flavonoids and their derivatives as new anticancer candidates to stimulate PCD with a different mechanism based on the pharmacological evidence.
Comparative Proteomic Profile of Canine Uterus with Pyometra
안수민,Venu Venkatarame Gowda Saralamma,Preethi Vetrivel,한현정,박진호,정동인,김곤섭,유도현 한국임상수의학회 2021 한국임상수의학회지 Vol.38 No.1
Pyometra, a common disorder in intact bitches, can lead to canine sepsis. Identification of biomarkers for sources of infection in the uterus using two-dimensional electrophoresis (2-DE)-mass spectrometry (MS) analysis may enable the discovery of novel diagnostic markers of sepsis. Toward this end, surgically resected uterus samples from four bitches (three pyometra and one healthy) were randomly selected for 2-DE-MS, which identified 32 differentially expressed proteins, including seven inflammatory proteins, five non-inflammatory proteins, and 20 functionally unknown proteins. Despite the limited information on canine uterus proteomics, we suggest the potential use of differentially expressed uterus proteins as candidate biomarkers to discover targets to attenuate inflammation in pyometra. Further identification of the functionally unknown proteins is warranted.