Publications by authors named "Sivakumar Arumugam"

Neurofibromatosis (NF) is identified as genetic disorder characterized by multiple tumors on nerve tissues. NF1 is the most prevalent form, identified by neurofibromas and skin changes. NF1 is the most prevalent neurofibromatosis disorder, distinct from the rarer NF2 and schwannomatosis (SWN) conditions.

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Mutant KRAS promotes the proliferation, metastasis, and aggressiveness of various cancers including pancreatic ductal adenocarcinoma (PDAC), non-small cell lung cancer (NSCLC), and colorectal adenocarcinoma (CRC) respectively. Mutant KRAS therapeutics are limited, while Sotorasib and Adagrasib were the only FDA-approved drugs for the treatment of KRAS mutated NSCLC. Chimeric antigen receptor (CAR) T-cell therapy has been emerged as an effective strategy against hematological malignancies and being extended towards solid cancers including PDAC.

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Wireless sensor networks (WSNs) are structured for monitoring an area with distributed sensors and built-in batteries. However, most of their battery energy is consumed during the data transmission process. In recent years, several methodologies, like routing optimization, topology control, and sleep scheduling algorithms, have been introduced to improve the energy efficiency of WSNs.

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Cardiovascular disease is a chronic inflammatory disease with high mortality rates. TNF-alpha is pro-inflammatory and associated with the disease, but current medications have adverse effects. Therefore, efficient inhibitors are urgently needed as alternatives.

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Cancer has become a serious health burden that results in high incidence and mortality rates every year, mainly due to various molecular alterations inside the cell. Liver X receptors (LXRs) dysregulation is one among them that plays a vital role in cholesterol metabolism, lipid metabolism and inflammation and also plays a crucial role in various diseases such as obesity, metabolic dysfunction-associated fatty liver disease (MAFLD), cardiovascular diseases, Type 2 diabetes, osteoporosis, and cancer. Studies report that the activation of LXRs inhibits cancer growth by inhibiting cellular proliferation, inducing apoptosis and autophagy, regulating cholesterol metabolism, various signalling pathways such as Wnt, and PI3K/AKT, modulating the expression levels of cell-cycle regulators, and promoting antitumor immunity inside the tumor microenvironment.

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Objectives: Acute diarrhea in children is generally managed by replacing the lost fluid with oral rehydration solution (ORS). Probiotic supplementation has been reported to reduce the severity of diarrhea. In the present study, we investigated the effect of () MTCC 5856, along with ORS on acute diarrhea of all causes in non-hospitalized children.

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Unlabelled: Oncogenic KRAS mutations drive cancer progression in lung, colon, breast, and pancreatic ductal adenocarcinomas. Apart from the current strategies, such as KRAS upstream inhibitors, downstream effector inhibitors, interaction inhibitors, cell cycle inhibitors, and direct KRAS inhibitors, against KRAS-mutated cancers, the therapeutic small interfering RNAs (siRNAs) represent a promising alternative strategy that directly binds with the target mRNA and inhibits protein translation via mRNA degradation. Here, in the present study, we utilized various in silico approaches to design potential siRNA candidates against KRAS mRNA.

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Mutant KRAS-induced tumorigenesis is highly involved in the progression of pancreatic, lung, and breast cancer. Comparatively, KRAS G12D and KRAS G12C are the most frequent mutations that promote cancer progression and aggressiveness. Although KRAS mutant inhibitors exhibit significant therapeutic potential, day by day, they are becoming resistant among patients.

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Background: Mutant KRAS-induced tumorigenesis is prevalent in lung, colon, and pancreatic ductal adenocarcinomas. For the past 3 decades, KRAS mutants seem undruggable due to their high-affinity GTP-binding pocket and smooth surface. Structure-based drug design helped in the design and development of first-in-class KRAS G12C inhibitor sotorasib (AMG 510) which was then approved by the FDA.

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Background: Probiotics are known to rebalance the gut microbiota in dysbiotic individuals, but their impact on the gut microbiome of healthy individuals is seldom studied. The current study is designed to assess the impact and safety of Bacillus coagulans (Weizmannia coagulans) microbial type culture collection 5856 (LactoSpore®) supplementation on microbiota composition in healthy Indian adults.

Methods: The study participants (N = 30) received either LactoSpore (2 billion colony-forming units/capsule) or placebo for 28 days.

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The KRAS G12D mutation is very frequent in many cancers, such as pancreatic, colon and lung, and has remained undruggable for the past three decades, due to its smooth surface and lack of suitable pockets. Recent small pieces of evidence suggest that targeting the switch I/II of KRAS G12D mutant could be an efficient strategy. Therefore, in the present study, we targeted the switch I (residues 25-40) and switch II (residues 57-76) regions of KRAS G12D with dietary bioflavonoids in comparison with the reference KRAS SI/II inhibitor BI-2852.

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Background: Gut microbiome dysbiosis is a major cause of abdominal gas, bloating, and distension. Bacillus coagulans MTCC 5856 (LactoSpore) is a spore-forming, thermostable, lactic acid-producing probiotic that has numerous health benefits. We evaluated the effect of Lacto Spore on improving the clinical symptoms of functional gas and bloating in healthy adults.

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Thermal stability (D-value and pasteurization) and gastric acid resistance of spore forming and nonspore forming probiotic strains were evaluated in this study. Bacillus coagulans MTCC 5856 spores showed highest thermal resistance (D-value 35.71 at 90 °C) when compared with other Bacillus strains and Lactobacillus species.

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Background: The derivatives of xanthene are known to have promising anticancer properties, in comparison to xanthene itself.

Objective: The object of our study was to develop few xanthene derivatives (a family of fifteen novel 3,4,6,7- tetrahydro-3,3-dimethyl-9-phenyl-2H-xanthene-1,8(5H, 9H)-diones encoded as 4a-4m), which were effectively prepared through regioselective synthesis approach, and to test their anticancer effects.

Methods: A series of cell lines were used in this study, first to assess the cytotoxicity and then the drug efficacy of target compounds, consecutively.

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Background: Macrophages play a serious part in the instigation, upkeep, and resolution of inflammation. They are activated or deactivated during inflammation progression. Activation signals include cytokines (IF-γ, granulocyte-monocyte colonystimulating factor (GM-CSF), and TNF-α), extracellular matrix proteins, and other chemical mediators.

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Several research groups have utilized dental pulp stem cells for numerous studies as treatment modality for Parkinson's disease (PD). However, the roles of dental pulp stem cells in governing the Parkinson's disease inflammatory microenvironment remain to be evaluated. In this article, we elaborate the method where we can investigate the effects of dental pulp stem cells on neurons and microglia in an in vitro inflammatory microenvironment.

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Background: Emblica officinalis, known as amla in Ayurveda, has been used as a folk medicine to treat numerous pathological conditions, including diabetes. However, the novel extract of E. officinalis fruit extract (amla fruit extract, AFE, Saberry®) containing 100 g kg β-glucogallin along with hydrolyzable tannins has not yet been extensively studied for its antidiabetic potential.

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Recently, we reported our methodology for isolating plasma membrane and lysosome from eukaryotic cell using superparamagnetic nanoparticles (SPMNPs). Here in this article, we report a step-by-step protocol for synthesis of hybrid gold nanoparticle (AuNP), surface functionalization of AuNPs on superparamagnetic nanoparticles (SPMNPs), and potential use of hybrid AuNP-SPMNP for efficient coupling of biomolecules.

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Baculovirus expression vector system (BEVS) is an established technology for recombinant protein expression in insect cells. Further, BEVS-mediated gene transduction of mammalian cells (BacMam) is emerging as a technique for high level recombinant protein expression in mammalian cells. Here, we describe generic method in using BEVS as a BacMam for rapid recombinant protein expression in mammalian cells.

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Calebin-A is a curcuminoid compound reported to be present in Curcuma longa rhizome. The current study was aimed to isolate and characterize calebin-A from Curcuma caesia rhizome and its production through biotransformation approach using endophytic fungus. C.

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In recent years, probiotic functional foods have gained quite a popularity and become a preferred choice among consumers, due to their positive effects on the gut microbiota and overall health. However, it is imperative for a probiotic strain to remain live and active at the time of consumption in high enough population density, in order to provide such health benefits. Thus, this study aimed to investigate the Bacillus coagulans MTCC 5856 spore stability after tea and coffee brewing and its subsequent growth in gastrointestinal tract (GIT) hostile environment.

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Here, we report our step-by-step protocol for superparamagnetic nanoparticle (SPMNP)-based endosome and lysosome isolation from HeLa. Briefly, we synthesized SPMNP 1.0 with iron oxide (FeO) core using thermal decomposition method.

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A series of new 1,2,4-triazole and 1,3,4-oxadiazole derivatives was obtained via several steps sequential reactions of phenyl piperazine. Then, these compounds were converted to the corresponding fluoroquinolone hybrids via one pot three component Mannich reaction. All the reactions were examined under conventional and microwave mediated conditions, and optimum conditions were determined.

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Amide substituted (Z)-β-enaminones were synthesized by green chemistry and stereo-specific synthetic pathway as novel phosphoinositide 3-kinase (PI3K) inhibitors and breast cancer drugs. PI3K inhibition was measured by competitive ELISA. A panel of cancer cell lines including MCF-7 (breast cancer), G-361 (skin cancer), and HCT 116 (colon cancer) were used to assess the anticancer potentials.

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Functional dyspepsia (FD) is a highly prevalent disorder having nonspecific symptoms and varied pathophysiology. Its treatment remains a challenge as therapeutic options are limited, unsatisfactory, and elusive. Thus, safety and efficacy of DigeZyme, a proprietary multienzyme complex (MEC), was evaluated as a dietary supplement in FD patients.

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