Exploring the role of progestin and vitamin D on inflammation and oxidative stress in in vitro and in vivo models of ovarian cancer
Exploring the role of progestin and vitamin D on inflammation and oxidative stress in in vitro and in vivo models of ovarian cancer
批准号:
10064375
负责人:
Gustavo Rodriguez
金额:
$6.51万
依托单位国家:
美国
项目类别:
财政年份:
2019
资助国家:
美国
项目状态:
已结题
起止时间:
2019-12-01 至 2022-11-30
关键词:
Abdominal CavityAffectBenignBiologicalBiological AssayC-reactive proteinCD3 AntigensCD44 geneCalcitriolCarcinoma in SituCell LineCell NucleusCellsDNADNA DamageDevelopmentDisease modelDominant-Negative MutationEnzyme-Linked Immunosorbent AssayEpithelialEpitheliumEventExposure toFemaleFormulationGenesGynecologic Surgical ProceduresH2AFX geneHydrogen PeroxideIL8 geneITGAM geneImmunofluorescence ImmunologicImmunohistochemistryIn VitroIncidenceInflammationInflammation MediatorsInflammatoryInterleukin-6Knockout MiceLeadLesionLevonorgestrelMS4A1 geneMalignant NeoplasmsMalignant neoplasm of ovaryMammalian OviductsMediator of activation proteinMedroxyprogesterone 17-AcetateModelingMolecularMolecular AnalysisMolecular GeneticsMusMutationNorethindroneOvarianOvaryOxidative StressOxidative Stress PathwayPTEN genePTPRC geneParaffinPharmacologyPlasmaPostmenopausePreventionPrevention trialPreventivePrimary Cell CulturesProgesteroneProgestinsProtein p53ProteinsRNAReactive Oxygen SpeciesReproducibilityRoleS-Phase FractionSamplingSecretory CellSerousStainsSurfaceTNF geneTP53 geneTechniquesTestingTimeTubeUrokinase Plasminogen Activator ReceptorVitamin DWestern BlottingWomanWorkanalogcarcinogenesisexperimental studyfimbriain vivo Modelmonocytemortalitymouse modelmutantovarian cancer preventionp53-binding protein 1parent grantresponse
中文摘要
项目总结/摘要
在卵巢癌发生的早期阶段,现在认为,
以及暴露于炎症介质和相关氧化应激时的遗传改变
(活性氧-ROS)在排卵事件期间从邻近卵巢释放。这些
变化导致“p53特征”--突变p53蛋白的积累(最早的遗传学)
卵巢癌中的改变),在伞的分泌细胞中,最终导致
浆液性输卵管上皮内癌(STIC)的发展,通过
脱落/剥落直接到达相邻卵巢并进入腹腔。的p53
在炎症、氧化和DNA毒性的过程中演变的信号和STIC病变
微环境的特征在于不同的特征,包括极性丧失,上皮簇,
多形性核,异常p53表达和高增殖指数。的发现
这些病变以及它们如何发展为制定药理学策略打开了大门
阻止和/或逆转伞部的早期变革事件,具有巨大的潜力
通过预防降低卵巢癌的发病率和死亡率。
以前,我们的工作主要集中在卵巢表面上皮细胞作为生物靶点
使用孕激素和维生素D预防卵巢癌。然而,人们对
他们在FTE中的生物效应。本研究的目的是探讨
雷公藤多甙和维生素D对乳腺癌早期炎症和氧化应激的影响
卵巢癌的体外和体内疾病模型。我们假设抑制
炎症和氧化作用可能包括一种生物学机制,
这些药物的癌症预防作用。此外,我们将研究是否结合
维生素D和维生素D的组合比单独使用任何一种药物都更有效。为了验证这个假设,我们
将利用来自母基金的以下样本来评估炎症和氧化
在施用维生素D后应激途径:(1)原代细胞培养物
获得了FTE以及携带显性阴性突变体p53的转化FTE,
从绝经前和绝经后妇女接受妇科手术良性
适应症,(2)输卵管的石蜡切片和相应的分离物(RNA,DNA,
蛋白质和血浆/血清),其得自经历了以下过程的小鼠(mogp-TAg和Dicer-PTEN):
孕激素和维生素D的预防试验。
英文摘要
Project Summary/Abstract
In the early stages of ovarian carcinogenesis, it is now thought that the fimbria acquires molecular
and genetic alterations when exposed to inflammatory mediators and associated oxidative stress
(reactive oxygen species-ROS) released during ovulatory events from the adjacent ovary. These
changes lead to the “p53 signature”- accumulation of mutant p53 protein (earliest genetic
alteration in ovarian cancer), in the secretory cells of the fimbria ultimately leading to the
development of serous tubal intraepithelial carcinoma (STIC), which spreads via
shedding/exfoliation directly to the adjacent ovary and into the abdominal cavity. The p53
signatures and STIC lesions which evolve in an inflammatory, oxidative and DNA-toxic
microenvironment are characterized by distinct features including loss of polarity, epithelial tufting,
pleomorphic nuclei, abnormal p53 expression and a high-proliferative index. The discovery of
these lesions and how they develop opens the door to the formulation of pharmacologic strategies
that arrest and/or reverse the early transformative events in the fimbria, with immense potential
to decrease ovarian cancer incidence and mortality through prevention.
Previously, our work has focused primarily on the ovarian surface epithelium as the biologic target
for ovarian cancer prevention using progestins and vitamin D. However, little is known regarding
their biologic effects in the FTE. The objective of this study is to explore the impact of
progestin and vitamin D on inflammation and oxidative stress in early carcinogenesis of
ovarian cancer in in vitro and in vivo models of the disease. We hypothesize that inhibition
of inflammatory and oxidative effects may comprise a biologic mechanism contributing to the
cancer preventive effects of these agents. Furthermore, we will examine whether the combination
of progestin and vitamin D is more effective than either agent alone. To test this hypothesis, we
will utilize the following samples from the parent grant to evaluate inflammatory and oxidative
stress pathways following administration of progestin and vitamin D: (1) cell cultures of primary
FTE as well as transformed FTE harboring dominant negative mutant p53 obtained and
established from pre- and postmenopausal women undergoing gynecologic surgery for benign
indications, (2) paraffin sections of the fallopian tube and corresponding isolates (RNA, DNA,
protein and plasma/serum) obtained from the mice (mogp-TAg and Dicer-PTEN) undergoing
prevention trials with progestins and vitamin D.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Vitamin D and Progestins for the Chemoprevention of Fallopian Tube/Ovarian Cancer
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批准号:10302294
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项目类别:
-
资助金额:$35.0万
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财政年份:2017
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负责人:Gustavo Rodriguez
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依托单位:
Vitamin D and Progestins for the Chemoprevention of Fallopian Tube/Ovarian Cancer
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批准号:10053715
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项目类别:
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资助金额:$49.13万
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财政年份:2017
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负责人:Gustavo Rodriguez
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依托单位:
海外基金