Master's Dissertations

Permanent URI for this collectionhttps://kr.cup.edu.in/handle/32116/156

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Subject: search.filters.subject.Breast cancer

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    Antiproliferative activity of Asparagus racemosus extracts
    (Central University of Punjab, 2018) Sharma, Ram; Jaitak, Vikas
    Cancer is regarded as uncontrolled progression and spread of cells. Cancer is not a singular, specific disease but a group of variable tissue responses that result in uncontrolled cell growth. Healthy cells have a specific size, structure, function and growth rate that best serves the needs of the tissues they compose. Cancer is one of the leading of morbidity and mortality worldwide, with approximately 14 million new cases in 2017. Breast cancer (BC) is a disease where cells in the tissue of the breast cancer grow and divide without normal control. Estrogen receptor is a group of proteins (or a twelve helix protein) present inside the cells of the female reproductive tissues or located in the nucleus of cells. ER?, ER? and ER gamma have different responses and they are located in different tissues. Quinone forms of catechol estrogen binds to DNA and forms adduct. Semi Quinone intermediates are free radicals can bind with oxygen to producing superoxide radicals. Superoxide radicals can attack and alter the structure of DNA and causing Breast cancer. Various synthetic drugs (Tamoxifen & Raloxifene) are used for treatment of breast cancer, but numerous side effects like menopausal symptoms, vaginal dryness, low libido, mood swings and Nausea. The discovery of novel natural drugs is important for reduction of side-effects, high selectivity, low toxicity, and better killing of cancer cells. Phytoestrogens are one the best category of natural products used for treatment of breast cancer. Phytoestrogens have similar structure to the endogenous estrogen. Distance between the hydroxyl groups is 14.5 A0 is similar to estrogen. Asparagus racemosus contain large number of phytoestrogens. In this context, the aim of the present study was to explore the roots of Asparagus racemosus in the terms of its medicinal values for Breast cancer. Anticancer activity of different extracts were evaluated by performing In vitro study by using Breast cancer cell lines T-47 D. from the Preliminary phytochemical investigation of extracts demonstrated that methanolic extract and Aqueous methanolic extract contain large number of phytoestrogens. Aqueous methanolic extract and methanolic extract showed maximum IC50 value as compare to other extract. Isolation of molecules from methanol extract, total four molecules isolated from methanol extract and three molecules from aqueous methanol extract. Moreover, in silico study of reported phytoestrogen from Asparagus racemosus was also carried out using glide docking to investigate interaction pattern with estrogen receptor ? and estrogen receptor ?. The top docking score was obtained for Rutin (Estrogen receptor ?) and Quercetin (Estrogen receptor ?). Tamoxifen and raloxifene used as standard for estrogen receptor ? and oestradiol used as standard for estrogen receptor ?. From the ADME study demonstrated that maximum flavonoids has highest oral absorption as compare to other. The results showed that phytoestrogens are expected prospective candidate for regulatory tumor progression with a special emphasis in breast cancer progression.
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    Identification of Novel lncRNA in Breast Cancer Cell Line
    (Central University of Punjab, 2018) Sharma, Divya; Singh,Sandeep
    Long non-coding RNA(lncRNA) is RNA transcript having size of more 200 nucleotides and low number of exons are present due to which it expressed at lower level in specific tissues. Mainly the lncRNA is involved in gene regulations such as epigenetic regulation, chromatin remodeling and posttranscriptional regulations.The localization of lncrna is mainly in nucleus but there is considerable amount of lncrna present in cytoplasm. Lncrna can also target the mitochondrial genome. Identification of the targets of lncrna on mitochondrial genome helps to find the relationship between lncrna and mitochondrial functions which further helps in diagnosis and in therapy of the mitochondrial related diseases. One such lncRNA is MIR503HG, which act as a tumor suppressor in breast cancer cell line. Expression of lncRNA MIR503HG was analyzed in normoxic and hypoxic conditions upon the treatments of three different types of drugs on breast cancer cell line. The study of expression level of lncRNA MIR503HG in breast cancer cell line suggest a new cancer biomarker.
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    Eeffect of Natural Compounds on Her2 Expression
    (Central University of Punjab, 2018) Uradanda, Praveen; Chander, Harish
    Breast cancer is a heterogeneous disease that is challenging to treat.we examine potential natural compounds which may help in treating her2 positive breast cancer. The main objectives of this study are to determine the mRNA level and protein levels on exposing MDAMB453 cell lines with Quercetin and PEITC at 40µm,44hrs.we have found in result analysis that her2 expression is downregulated on treatment with PEITC.where cell line treated with quercetin as no effect to downregulate her2 expression in MDAMB453.