miRNAs, Whole Diet, and Coronary Heart Disease
miRNAs, Whole Diet, and Coronary Heart Disease
批准号:
9324422
负责人:
Jun Dai
金额:
$82.99万
依托单位国家:
美国
项目类别:
财政年份:
2016
资助国家:
美国
项目状态:
已结题
起止时间:
2016-09-15 至 2018-08-31
关键词:
AddressAgeAnthropometryAtherosclerosisAttentionBeveragesBioinformaticsBiological MarkersCalendarClinicalCollectionCommunitiesComplexCoronary heart diseaseDataDiagnosisDiagnosticDietDietary ComponentDietary PracticesDietary intakeDimensionsDiseaseEnvironmental Risk FactorEvaluationEventFoodFreezingFrequenciesGene ExpressionGene Expression RegulationGoalsHumanIndividualInstitutesKnowledgeLifeLife StyleLightLinkLiteratureLogistic RegressionsMeasuresMediterranean DietMethodologyMicroRNAsModelingMolecularNatureNested Case-Control StudyNutrientOutcomeParticipantPathway interactionsPatternPhasePilot ProjectsPlasmaPreventionProspective StudiesProxyPublic HealthPublishingQuestionnairesRaceRegulationResearchResourcesReverse Transcriptase Polymerase Chain ReactionRiskRisk FactorsSamplingSmall RNASystems BiologyTechnologyTestingTherapeuticValidationVisitWomanbasecase controlcirculating microRNAcohortcostdemographicsdesigngene environment interactiongene interactiongood dietheart disease riskinnovationinsightmennext generation sequencingnovelnovel markernovel therapeutic interventionphase 1 studyphase 2 studypreventprospectivescreeningsequencing platformsexsocioeconomicstranscriptome sequencing
中文摘要
整个饮食,食物和饮料的结合,在预防和治疗中是重要的
英文摘要
The whole diet, the combination of foods and beverages, is important in the prevention and treatment of
coronary heart disease (CHD). Dietary intake is a life-long environmental factor indispensable for humans.
Although the gene-environment interaction is pivotal in CHD, it is not completely known how the whole diet
regulates gene expression, and whether such regulation is a mechanistic link between the whole diet and CHD.
MicroRNAs (miRs) regulate gene expression post-transcriptionally. Dietary patterns have been used to
evaluate the whole diet. In our pilot studies, we demonstrated that miRs were associated with a healthy whole
diet pattern, “modified Mediterranean diet (mMedDiet) pattern”, and were prospectively associated with CHD.
Thus, our overall objective is to prospectively investigate dietary modulation of miRs and CHD for better
understanding of dietary regulation of gene expression and its relation to CHD in the large cohort. Our
preliminary data showed that a mMedDiet pattern was prospectively associated with low CHD risk in a well-
characterized community cohort, the Atherosclerosis Risk in Communities Study (ARIC). Similarly, our
published data showed that a mMedDiet pattern was prospectively related to lower subclinical atherosclerosis
in a well-characterized, multi-ethnic cohort, the Multi-Ethnic Study of Atherosclerosis (MESA). Therefore, we
propose a two-phase, individually matched case-control (1:2) study nested in both ARIC and MESA cohorts.
Matching on age, sex, race, field center, calendar date for plasma collection, and freeze/thawing cycle, using
risk-set sampling, we will include 412 incident CHD cases and 824 risk-set matched controls from ARIC (phase
1 for next-generation sequencing based miR measures) and for phase 2, replication ─ 361 incident CHD cases
and 722 risk-set matched controls from MESA. To capture the complex nature of the whole diet and numerous
synergies and antagonism among food items (including nutrients, food components, and substances such as
additives and preservatives), we will use multiple healthy dietary patterns. Systemic miRs will be profiled in
plasma using the state-of-the art small RNA-seq in ARIC, and candidate and screened miRs will be measured
using qPCR in ARIC and MESA. We aim to determine cost-efficiently: 1) whether the whole diet represented
by healthy dietary patterns, is prospectively associated with miRs; and 2) whether pre-diagnosis miRs that are
prospectively related to incident CHD are associated with whole diet. We will identify diet-related and CHD-related
miRs from candidate miRs and other miRs. We will further assess to what extent miRs explain the difference in
CHD risk between participants with higher diet scores and those with lower diet scores. Findings from our
study will shed light on miRs as a novel pathway linking whole diet to CHD event, and will provide insight into
the use of miRs as novel biomarkers for dietary regulation of genes and as proxies to evaluate new therapeutic
approaches and public health strategies to prevent CHD events.
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