Mus Musculus Strains Research Articles

Characterizing phenotypic data of Peromyscus leucopus compared to C57BL/6J Mus musculus and diversity outbred (DO) Mus musculus

Translational research is commonly performed in the C57B6/J mouse strain, chosen for its genetic homogeneity and phenotypic uniformity. Here, we evaluate the suitability of the white-footed deer mouse (Peromyscus leucopus) as a model organism for aging research, offering a comparative analysis against C57B6/J and diversity outbred (DO) Mus musculus strains. Our study includes comparisons of body composition, skeletal muscle function, and cardiovascular parameters, shedding light on potential applications and limitations of P. leucopus in aging studies. Notably, P. leucopus exhibits distinct body composition characteristics, emphasizing reduced muscle force exertion and a unique metabolism, particularly in fat mass. Cardiovascular assessments showed changes in arterial stiffness, challenging conventional assumptions and highlighting the need for a nuanced interpretation of aging-related phenotypes. Our study also highlights inherent challenges associated with maintaining and phenotyping P. leucopus cohorts. Behavioral considerations, including anxiety-induced responses during handling and phenotyping assessment, pose obstacles in acquiring meaningful data. Moreover, the unique anatomy of P. leucopus necessitates careful adaptation of protocols designed for Mus musculus. While showcasing potential benefits, further extensive analyses across broader age ranges and larger cohorts are necessary to establish the reliability of P. leucopus as a robust and translatable model for aging studies.

IFI207, a young and fast-evolving protein, controls retroviral replication via the STING pathway.

Mammalian AIM-2-like receptor (ALR) proteins bind nucleic acids and initiate production of type I interferons or inflammasome assembly, thereby contributing to host innate immunity. In mice, the Alr locus is highly polymorphic at the sequence and copy number level, and we show here that it is one of the most dynamic regions of the genome. One rapidly evolving gene within this region, Ifi207, was introduced to the Mus genome by gene conversion or an unequal recombination event a few million years ago. Ifi207 has a large, distinctive repeat region that differs in sequence and length among Mus species and even closely related inbred Mus musculus strains. We show that IFI207 controls murine leukemia virus (MLV) infection in vivo and that it plays a role in the STING-mediated response to cGAMP, dsDNA, DMXXA, and MLV. IFI207 binds to STING, and inclusion of its repeat region appears to stabilize STING protein. The Alr locus and Ifi207 provide a clear example of the evolutionary innovation of gene function, possibly as a result of host-pathogen co-evolution.IMPORTANCEThe Red Queen hypothesis predicts that the arms race between pathogens and the host may accelerate evolution of both sides, and therefore causes higher diversity in virulence factors and immune-related proteins, respectively . The Alr gene family in mice has undergone rapid evolution in the last few million years and includes the creation of two novel members, MndaL and Ifi207. Ifi207, in particular, became highly divergent, with significant genetic changes between highly related inbred mice. IFI207 protein acts in the STING pathway and contributes to anti-retroviral resistance via a novel mechanism. The data show that under the pressure of host-pathogen coevolution in a dynamic locus, gene conversion and recombination between gene family members creates new genes with novel and essential functions that play diverse roles in biological processes.

Diversity of genes encoding immune-related GTPase B2 protein, an inherited element responsible for resistance against virulent Toxoplasma gondiistrains, among wild Mus musculus in local area of Japan.

The major genetic group of Toxoplasma gondii, known as type I, generally displays high lethality in laboratory Mus musculus (mouse) strains, with few exceptions. However, because rodents are the primary reservoir hosts for T. gondii, if this characteristic manifests in the wild, type I strains would be extinct. Therefore, we hypothesized that populations of wild rodents capable of harboring type I T. gondii asymptomatically exist globally and are not limited to a few localized areas, as previously thought. The strength of mouse resistance to T. gondii is known to depend on the affinity of the mouse-expressed immunity-related GTPases B2 (IRGB2) protein for the T. gondii-expressed rphoptry protein 5B (ROP5B) protein. Therefore, the Irgb2 gene sequences of 12 individuals mice captured at two animal farms in Gifu Prefecture, and on an island in Okinawa Prefecture, Japan were determined, and subjected to a molecular phylogenetic analysis together with those of various mouse strains worldwide. The Irgb2 gene of M. musculus individuals captured on one farm and one island showed diverse sequences. The sequences from two individual mice captured in an animal farm formed a single clade with a wild mouse derived CAST/EiJ strain, known for its exceptional resistance to type I T. gondii lethality. These results suggest that M. musuculus individuals resistant to the Type I T. gondii strain may be present in Japan, in addition to the previously known populations in South Asia, Thailand and India.

Vitamin D3 induces stem cell activation via Lgr5-Bmi1 expression and improving mouse colitis histology index.

Conventional therapy for inflammatory bowel disease using long-term anti-inflammatory drugs does not seem to provide optimal results. Adjuvant therapy using vitamin D3 is believed to have an essential role in repairing the colonic mucosa through the activation of colonic stem cells. The aim of this study was to demonstrate the effect of vitamin D3 in mucosal repair through stem cell activation, marked by leucin-rich repeat-containing G protein-coupled receptor 5 (Lgr5) and B lymphoma Mo-MLV insertion region 1 (Bmi1) expression and decrease the mouse colitis histology index (MCHI) score. In this study, 50 Mus musculus strain BALB/c were divided into five groups: negative control group, colitis group, and colitis groups with vitamin D3 administration of 0.2 mcg, 0.4 mcg, and 0.6 mcg per 25 g body weight for seven days. Dextran sulfate sodium (DSS) 5% was used to induce colitis. Lgr5-Bmi1 expression was measured using immunodoublestain fluorescent labeling method. Our data suggested that administration of vitamin D3 significantly increased expression of Lgr5-Bmi1 in the colonic mucosa. The colitis group treated with the highest dose of vitamin D3 (0.6 mcg/25 gram) showed the lowest MCHI score (3.60±0.64) while the lowest dose of vitamin D3 had the highest MCHI score (12.60±1.47). In conclusion, by stimulating stem cells, vitamin D3 administration stimulates mucosal regeneration, as demonstrated by upregulated expression of Lgr5-Bmi-1.

Histopathological effect of different concentration of powder detergent on the laboratory mice ( Mus musculus ) intestine

Eighty mice (Mus musculus) were ingested with various concentration of powder detergent and the Histopathological changes were measurd of different concentration of Powder detergent by ingesting 80 mice Mus musculus strain (4-8) weeks aged with detergent solutions. mice were divided into (8) groups ,each one composed of (8) mice. The control group (H) were ingested vegetables (celery) only, while the groups (A,B,C,D,E,F,G) were ingested vegetables (celery), which soaked in aqueous solution of Powder detergent with various concentrations of Powder detergent for different times (1.5g/Kg15min, 3g/Kg15min, 4.5g/Kg15min, 1.5g/Kg30min, 3g/Kg30min, 4.5g/Kg30min, 1.5 g/Kg1-2min). The intestine tissue of the exposed mice showed marked Histopathological changes induced in the intestine of mice by detergent included Many intestinal microvilli were ruptured near the tips, lesions of Epithelial cells of microvilli, Elongation of vili, Degeneration, Lymphocyte infiltration, vacuolation and Necrosis. The effects increased by increasing of concentration the detergent solutions Consecutively 4.5g/Kg30min, 3g/Kg30min and 1.5g/Kg30min, were, more than 4.5g/Kg15min, 3g/Kg15min and 1.5g/Kg15min and duration when compared to control (H) group. The results of this research have shown that the detergent is toxic to the mice exposed. the results of the study emphasize healthy hazards of detergent exposure, so needs a proper handling and disposal them during daily life using Finally, it is hoped that the result from this investigation will enlighten people on the health risk posed by detergent.

Histopathology of Nephrotoxicity Associated with Administered Water Extract Purple Sweet Potato (<i>Ipomoea batatas</i>) in Mice (<i>Mus musculus</i>) in Stratified Phases of Dose

The main aim of the registered purple sweet potato (Ipomoea batatas) is to provide minimize the adverse chemical drugs, in addition to its anti-inflammatory, antioxidant, and antimicrobial effects. Potentially adverse effects may be observed in laboratory animals in particular, the extent to which this administration can cause toxicity. This study aimed to examine the histopathology of nephrotoxicity associated with administered water extracts of purple sweet potato in mice with stratified doses. The study was conducted at the Biomedical Laboratory, Faculty of Medicine, Universitas Islam Bandung on September 2019. Female mice (Mus musculus) strain Swiss Webster, aged between 6–8 weeks weighing 25 to 30 g, were obtained from Biopharma Laboratory, Bandung. The animal was acclimatized for seven days before being administered water extract purple sweet potato: eleven mice, one control group, and ten treatment groups underwent toxicity doses of purple sweet potato water extract administration. Purple sweet potato variant of Ayamurasaki prepared in various oral doses. The results show in the control group there were no histopathological changes, but in the group administered water extract purple sweet potato from the first phase seems in a mild grade of macrophage accumulation, mild vacuolization of tubular epithelial cells, mild vascular dilatation, and mild hydrophilic degeneration. In the second phase, macrophage accumulation was visible in moderate grades. The LD50 of purple sweet potato extract is greater than 5,000 mg/kgBW. The findings of this study indicate that registration of purple sweet potato extract in confirmatory doses is safe to administer and did not exhibit any mortality. The toxicity test of purple sweet potato water extracts in the kidney exhibits minimal chemical effects.

Histopathological Changes in the Liver and Spleen of Albino Mouse, Mus musculus Linnaeus, 1758 Experimentally Infected with the Hydatid Cyst of Echinococcus granulosus (Batsch, 1786) and Its Treatments with Oxfendazole

The present study was conducted as an attempt to chemically treat secondary hydatid cyst disease in the Albino mouse Mus musculus strain Balb/c. Oxfendazole (OFZ) was used at a concentration of 30 mg/kg, and the histopathological changes in the liver and spleen were examined. The efficiency of the drug was observed compared to the positive untreated control group. However, some histopathological changes were noticed in liver and spleen of the OFZ-treated mice.

The Effect of Alpinia Galanga Extract to Seminiferous Tubular Epithelial Thickness and Seminiferous Tubular Diameter of Male Mice Induced to Lead Acetate

The purpose of this research was to determine the effect of Alpinia galanga extract for seminiferous tubular epithelial thickness, and seminiferous tubular diameter of mice induced to lead acetate. This study was experimental, 25 male mice (Mus musculus) strain Balb/C with average arround 30 gram were divided into 5 groups in a completely randomized design with different treatments for 24 days. The negative control group C (-) was given CMC-NA, the positive control group C(+) was given CMC-NA + lead acetate, groups P1, P2, and P3 were given galangal extract 200, 400, and 800 mg/kgBB + CMC-NA + lead acetate. Mice were sacrificed at a predetermined time and then histopathological preparations of testicular organs were made for epithelial thickness and seminiferous tubule diameter. Data analysis used ANOVA test and continued with LSD test. The result of the research galangal extract administration showed an increase in epithelial thickness and diameter significantly by the three treatment groups against the control (+) (p<0.05). group P2 which given galangal extract 200 mg/kgBw/day is the most effective to prevent epithelial thickness (59.83 ± 0.48; p<0.05) and diameter of seminiferous tubules (180.89 ± 0.85; p<0.05) because the result not significantly different from the control group (-) where epithelial thickness (59.64 ± 1.83; p<0.05) and seminiferous tubule diameter (180.71 ± 1.37; p<0.05) were given CMC- NA 0.2 ml/day. It can be concluded that giving galangal extract to male mice exposed to lead acetate was proven to maintain thick epithelium and seminiferous tubule diameter.

An examination of nest-building behaviour using five different nesting materials in C57BL/6J and BALB/c mice

AbstractThe aim of our study was to assess the nest-building behaviour of two mouse (Mus musculus) strains using different nesting materials and examine possible sex- and housing-specific effects. Adult mice of two strains (C57BL/6J; n = 64 and BALB/cAnNCrl; n = 99) were randomly allocated to the following housing groups: single-housed male, single-housed female, pair-housed male and pair-housed female. One of the following nest-building materials was placed in each home-cage in a random order: nestlets (Plexx BV, The Netherlands), cocoons (Carfil, Belgium), wooden wool, crinklets and compact (all three, Safe, Germany). The following day, nests were rated applying a nest-scoring scale ranging from 0 to 10, the nests were removed, and a different nest-building material provided. In both tested strains, nestlets achieved the highest nest-building scores when compared to the other four nest-building materials. All nest-building materials scored higher in BALB/c mice compared to C57BL/6J animals reaching statistical significance in crinklets only. Sex comparison revealed that female C57BL/6J mice only scored significantly higher using crinklets than males and BALB/c female mice were rated significantly higher using wooden wool, cocoons and compact than their male counterparts. While pair-housed C57BL/6J animals built higher-rated nests than single-housed mice in the C57BL/6J strain in all five materials tested, the scores were not significantly different in the BALB/c strain. Results of the present study reveal significant strain-, sex- and housing-related influences on the complexity of nests using different standardised building materials. Such observations need to be taken into account when planning the optimal enrichment programme for laboratory animals.

Systematic Analysis of Monoallelic Gene Expression and Chromatin Accessibility Across Multiple Tissues in Hybrid Mice.

In diploid eukaryotic organisms, both alleles of each autosomal gene are usually assumed to be simultaneously expressed at similar levels. However, some genes can be expressed preferentially or strictly from a single allele, a process known as monoallelic expression. Classic monoallelic expression of X-chromosome-linked genes, olfactory receptor genes and developmentally imprinted genes is the result of epigenetic modifications. Genetic-origin-dependent monoallelic expression, however, is caused by cis-regulatory differences between the alleles. There is a paucity of systematic study to investigate these phenomena across multiple tissues, and the mechanisms underlying such monoallelic expression are not yet fully understood. Here we provide a detailed portrait of monoallelic gene expression across multiple tissues/cell lines in a hybrid mouse cross between the Mus musculus strain C57BL/6J and the Mus spretus strain SPRET/EiJ. We observed pervasive tissue-dependent allele-specific gene expression: in total, 1,839 genes exhibited monoallelic expression in at least one tissue, and 410 genes in at least two tissues. Among these 88 are monoallelic genes with different active alleles between tissues, probably representing genetic-origin-dependent monoallelic expression. We also identified six autosomal monoallelic genes with the active allele being identical in all eight tissues, which are likely novel candidates of imprinted genes. To depict the underlying regulatory mechanisms at the chromatin layer, we performed ATAC-seq in two different cell lines derived from the F1 mouse. Consistent with the global expression pattern, cell-type dependent monoallelic peaks were found, and a higher proportion of C57BL/6J-active peaks were observed in both cell types, implying possible species-specific regulation. Finally, only a small part of monoallelic gene expression could be explained by allelic differences in chromatin organization in promoter regions, suggesting that other distal elements may play important roles in shaping the patterns of allelic gene expression across tissues.

Detrimental Effect of Alprazolam on Sperm Viability ofMice (Mus musculus) Exposed to Chronic Unpredictable Mild Stress

Objective: This study aims to investigate the effect of alprazolam administration on sperm viability of mice (Mus musculus) strain Balb/C following CUMSfor 53 days. Method: This study used a true experimental design through randomization. Control group kept undisturbed without treatment and therapy throughout 60 days. K1 and K2 were exposed to a 53 day period of CUMS along with 7-day pretreatment adaptation. K2 was adapted for a week, stressed for 53 days along with cotreatment of alprazolam (4 mg/kg BW). Results: K1 and K2 showed insignificant improvement of sperm viability (p > 0.05).Meanwhile, K0 and K1 showed significant value compared to K2 (p<0.05). K2 showed little increase of sperm viability in CUMS group along with subsequent treatment of alprazolam. Conclusion: Overall, the results indicate an insignificant effect of alprazolam on sperm viability of CUMS-induced mice.

Efektivitas Getah Pohon Jarak Cina Terhadap Perkembangan Kolonisasi Bakteri Luka Insisi Pada Hewan Coba Mus Musculus Strain Balb/C

The purpose of this study was to determine the effectiveness of Chinese jatropha sap on the development of incision wound bacteria colonization in experimental animals Mus musculus Strain Balb / cThe design of this study used a true experiment post only control group design by administering Chinese jatropha tree sap to male mice (bal mus / musculus) strains aged 2 to 2.5 months and weighing 20-30 grams with a total of 30 mice. Mice made incision wounds and observed the number of colonies in the inflammatory and proliferation phases of Chinese jatropha sap and compared with bioplacentonsThe results of the study in the treatment group were 410 bacteria on average while the control group were 585 bacteria in the inflammatory phase. Furthermore, in the proliferation phase the treatment group averaged 39 bacteria while in the control group there were an average of 79 bacteria. Independent t-test results in the inflammatory phase showed that р = 0.042 <α = 0.05 Furthermore, in the proliferation phase р = 0.041 <α = 0.05, in both phases there was an effect of giving Chinese jatropha tree sap to the amount of bacterial colonization in animals try Mus musculus Strains Balb / c.Chinese jatropha tree sap contains alkaloids, saponins, flavonoids, tannins, and anti-microbial β-lactams so as to stop the development of bacterial colonies in wounds. It is hoped that the Chinese jatropha sap can be an alternative in the initial treatment of open wounds and incisions in the limitations of medicine when a disaster occurs.

The Effectiveness of Vitamin D Addition to Decreasing Blood Glucose Levels of Hyperglycemic Mice Model with Glimepirid Therapy

Abstract
 Low 25-hydrocyvitamin D (25(OH)D3) levels are usually found in patients with type 1 and type 2 diabetes mellitus. This study aims to compare the effectiveness of fasting blood glucose levels in hyperglycemic mice model with glimepirid single therapy, hyperglycemic mice model with vitamin D, and mice model of hyperglycemic with glimepirid therapy plus vitamin D. This study used the true experimental research design with the randomized posttest only control group design. There were 25 male mice (Mus musculus) strain Balb/C with 20-30 g body weight and 2-3 months old which were grouped into 5 groups. The negative control group (K1) was injected with placebo and the positive control group (K2) was injected with STZ 150 mg/kgBW i.p. Groups P1, P2, and P3 were given STZ injection of 150 mg/kgBW i.p and given glimepirid 0.26 mg/kgBW; vitamin D 6,5 ml/kgBW; glimepirid 0,26 mg/kgBW with vitamin D supplementation 6,5 ml/kgBW. The results of the Tukey post hoc tests obtained differences in the mean of delta KGD between groups P1 and K2 = 122,55; in group P2 with K2 = 81,60; and in group P3 with K2 = 74,40. From these data, it can be concluded that in the group given glimepirid plus vitamin D there was no additional effectiveness in decreasing fasting blood glucose levels of hyperglycemic mice model compared to the group given only glimepirid therapy and the group given vitamin D alone.
 Keywords: diabetes mellitus, vitamin D, glimepiride, streptozotocin.

The effects of laser diode treatment on liver dysfunction of Mus musculus due to carbofuran exposure: An in vivo study.

Objective:The aim of this study is to determine the effect of laser diode as an alternative treatment on liver dysfunction (in vivo study) that is caused by carbofuran using male mice (Mus musculus) strain Balb/C.Materials and Methods:The samples were divided into three groups, namely, Group C–L– (control group, no treatment), Group C+L– (only treated by carbofuran treatment), and Group C+L+ (treatment group, treated by carbofuran and laser-puncture) with five replications each. After being treated, each liver slice of samples was observed using microscope to get the histology result and then scored.Results:Carbofuran contamination can lead to inflammation of cells and necrosis. The histology results and the scoring test showed that the liver cells repair with the energy dose of laser diode at 0.5 and 1.0 Joule.Conclusion:The optimum energy dose in this study was 1.0 Joule which had the closest score of inflammatory cells and necrosis to normal liver cells.

Mitochondrial - nuclear genetic interaction modulates whole body metabolism, adiposity and gene expression in vivo.

We hypothesized that changes in the mitochondrial DNA (mtDNA) would significantly influence whole body metabolism, adiposity and gene expression in response to diet. Because it is not feasible to directly test these predictions in humans we used Mitochondrial-Nuclear eXchange mice, which have reciprocally exchanged nuclear and mitochondrial genomes between different Mus musculus strains. Results demonstrate that nuclear-mitochondrial genetic background combination significantly alters metabolic efficiency and body composition. Comparative RNA sequencing analysis in adipose tissues also showed a clear influence of the mtDNA on regulating nuclear gene expression on the same nuclear background (up to a 10-fold change in the number of differentially expressed genes), revealing that neither Mendelian nor mitochondrial genetics unilaterally control gene expression. Additional analyses indicate that nuclear-mitochondrial genome combination modulates gene expression in a manner heretofore not described. These findings provide a new framework for understanding complex genetic disease susceptibility.

Evaluating rodent experimental models for studies of Blastocystis ST1

Blastocystis is a common inhabitant of the human gut, colonizing at least one billion people at a prevalence ranging from <10% to 100% in healthy human populations globally. The majority of carriers remain asymptomatic, suggesting that Blastocystis is largely a commensal, though Blastocystis has also been implicated in disease in some people. However, there are no in vivo model systems in which to experimentally test the impact of Blastocystis on mammalian hosts and the gut ecosystem and determine which factors underlie these variable clinical outcomes. We evaluated a rat model for sustaining of a human-derived Blastocystis ST1 and assess colonization success and longevity. Because of the broad host range of Blastocystis, we compared the rat with three other rodent species to establish the reproducibility of our method. Blastocystis was introduced by esophageal gavage and colonization success evaluated by Blastocystis culture. Culture was also used to determine that all animals were negative prior to colonization and negative controls remain Blastocystis-free. In this study, Blastocystis ST1 established in 100% of the outbred rats (Rattus norvegicus) and gerbils (Meriones unguiculatus) challenged. Rats were colonized asymptomatically for more than one year, but Blastocystis ST1 was not transmitted between rats. Mus musculus strain CD1 and Mastomys coucha were not susceptible to Blastocystis ST1. Thus, rats appear to be a suitable in vivo model for studies of Blastocystis ST1, as do gerbils though testing was less extensive. This work lays the foundation for experimental work on the role of Blastocystis in health and disease.

The effect of moderate exercise on the elevation of Bax/Bcl-2 ratio in oral squamous epithelial cells induced by benzopyrene.

Aim:The aim of this study was to analyze the effect of moderate exercise on the elevation of Bax/Bcl-2 ratio.Materials and Methods:Eighteen Mus musculus strain Swiss Webster (Balb/c) were divided into three groups (n=6). K1 and K2 had contact with water 3 times/week for 12 weeks, while the members of the K3 group swam 3 times/week for 12 weeks while carrying load weighed 3% of their body weight. After 5 weeks, they were induced with 0.04 ml oleum olivarum (K1), 0.08 mg benzopyrene/0.04 ml oleum olivarum (K2, K3) 3 times/week for 4 weeks. Immunohistochemistry assays were used to determine the ratio of Bax/Bcl-2 expression. The results were analyzed using an independent t-test.Result:The Bax/Bcl-2 ratio increased significantly in K3 compared to K2 (p=0.00).Conclusion:Moderate exercise could increase the Bax/Bcl-2 ratio in oral squamous epithelial cells induced by benzopyrene.

GAMBARAN HEMATOLOGI MENCIT (&lt;em&gt;Mus musculus&lt;/em&gt;) MODEL TOKSISITAS SUBKRONIS

Garlic commonly is consumed as medicine to prevent or heal illness or to maintain someone's health. Many societies prefer garlic (Allium sativum) among other herbal remedies for cholesterol treatment. It consists of several types, and one of them is single bulb garlic used to treat hypertension. There has been, however, no published research reporting the toxicological properties of single bulb garlic. The purpose of this study was to determine subchronic toxic effects of single bulb garlic administered to mice using hematological parameters. The experiment parameters were hemoglobin and hematocrit levels, the number of erythrocytes and leukocytes. Male mice (Mus musculus) strain Balb-C were treated with single bulb garlic extract for 28 days with dosage levels of 0% (N ), 0.25% (P1 ), 0.5% (P2 ), 1% (P3 ), and 2% (P4 ). Single bulb garlic showed no effect on hemoglobin and hematocrit levels but increased the number of erythrocyte and leucocyte. We concluded that single bulb garlic did not cause subchronic toxic effects.

Tea (Camellia sinensis) infusions ameliorate cancer in 4TI metastatic breast cancer model

BackgroundTea (Camellia sinensis) infusions are widely consumed beverages with numerous health benefits. However, physiological and molecular responses mediating these activities are poorly understood.MethodThree replicates of 4TI cancer cell suspension (2.0 × 105 cells/ml) were challenged in vitro with various concentrations of green, black and purple tea infusions to asseses their cytoxicity and associated differentially expressed genes in the cells. Inhibitory activity was tested by using serial dilutions of respective tea infusions in a 96 well ELISA plate.ResultsGreen tea had the highest inhibition on 4TI cells proliferation at a concentration of IC50 = 13.12 μg/ml. Further analysis of the 4TI cancer cell line treated with tea using 454 pyrosequencing generated 425,696 reads with an input mean length of 286.54. Trimmed sequences were imported on a CLC genomic workbench v7.03 and annotated on a reference mouse genome (Mus musculus strain C57BL/6 J). Results revealed a differential expression of apoptosis related genes in the transcriptome. Casp8, Casp9, Casp3, Casp6, Casp8AP2, Aifm1, Aifm2 and Apopt1 genes were significantly upregulated indicating the process of apoptosis was initiated and executed.ConclusionThese findings on caspases offer valuable information on the mechanism of tea as an anticancer agent and will contribute to further research in future novel treatments.

Antiproliferative Effect of Electric Fields on Breast Tumor Cells In Vitro and In Vivo

Our research focused on the antiproliferative effect of low intensity (18 Vpp) and intermediate frequency (100 KHz) electrostatic wave between two capacitive electrodes on breast tumor cells in vitro and in vivo. In vitro study has been conducted by using MCF-7 cell lines treated with external electrostatic for 24, 48, and 72 hours of treatment and the cells number were calculated during treatment by using hemocytometer and presented as Growth Inhibition (GI)% efficacy. For in vivo, we used female mice (Mus musculus) strain C3H as animal model. The mice were injected with either MCF-7 cells, mammary tumor cells from C3H donor, or NaCl 0.9% (placebo) subcutaneously into the axilla area and exposed by external electrostatic in each cage for 12 hours in 2 weeks before necropsied. The adjacent and breast tissue were collected and stained with Hematoxylin – Eosin then analyzed for histopathological profile. In vitro study revealed the number of exposed cells decreased with lower proliferation rate than the non-exposed cells. Moreover, the external electrostatic caused 28-39% growth inhibition efficacy of MCF-7 cells. After 2 weeks of exposure, placebo mice were physically normal, whereas the tumor undergone significant shrinkage of more than 67% in size. Histopathological analysis of the mammary glands indicated infiltration of macrophages into the tumor area through the blood vessel. No abnormality was found in the skin layer and mammary glands of the breast tissue of placebo mice. Here, we present new knowledge of electro-capacitive cancer therapy (ECCT) as a novel treatment modality.Keywords : ECCT, tumor, in vitro, in vivo, breast cancer cells, antiproliferative