A pro-metastatic secretory program activated by epithelial-to-mesenchymal transition
由上皮间质转化激活的促转移分泌程序
基本信息
- 批准号:10294733
- 负责人:
- 金额:$ 11.19万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-09-15 至 2023-08-31
- 项目状态:已结题
- 来源:
- 关键词:AchievementActinsAddressAdenocarcinoma CellAerosolsAllelesApicalAwardBeliefBiogenesisBiologicalCancer BiologyCancer CenterCancer EtiologyCell LineCell SurvivalCell membraneCellsCellular biologyClinicalDataDisciplineEndocytic VesicleExocytosisFocal AdhesionsGenetic TranscriptionGrowthGuanosine Triphosphate PhosphohydrolasesHot SpotHumanImmunocompetentInvadedKRASG12DKineticsKnowledgeLaboratoriesLentivirusLung AdenocarcinomaMalignant - descriptorMalignant NeoplasmsMalignant neoplasm of lungMedical centerMentorsMicroRNAsMicrotubulesMoldsMolecularMonomeric GTP-Binding ProteinsMusNeoplasm MetastasisNew MexicoOrganellesPaperPathway interactionsPeer ReviewPhysiciansPositioning AttributeProcessPropertyProtein SecretionProteinsProxyReceptor Protein-Tyrosine KinasesResearchResearch PersonnelRestScientistSecretory VesiclesSignal TransductionSiteSourceStainsStructureSumSurvival RateTestingThe Cancer Genome AtlasTissuesTrainingTraining ProgramsTranslatingUniversitiesUrsidae FamilyVesicleVimentinWorkactionable mutationactivating transcription factoranticancer researchbasecancer cellcareer developmentcell motilitycellular imagingcohortcongeniccytokinedesignepithelial to mesenchymal transitionhuman modelimaging studyinhibitor/antagonistloss of functionmouse modelpaxillinpost-doctoral trainingprogramsrab GTP-Binding Proteinsskillssmall hairpin RNAtargeted cancer therapytherapeutically effectivetraffickingtranscriptometumortumor microenvironmenttumor-immune system interactionstumorigenicvesicle transport
项目摘要
Project Summary/Abstract
Candidate: Dr. Xiao has received broad training in cell and cancer biology, including postdoctoral training at UT-
Southwestern Medical Center (UTSW) and MD Anderson Cancer Center (MDACC). He seeks to understand how
epithelial-to-mesenchymal transition (EMT) drives malignant secretion to promote lung cancer metastasis. Dr. Xiao
is a highly productive investigator, with 4 first-authored peer-reviewed papers. As recognition of his achievements,
he received numerous awards during his doctoral and postdoctoral training.
Career Development/Training: Dr. Xiao’s primary mentor is Dr. Jonathan Kurie, a physician-scientist with
expertise in cancer biology and mouse modeling of human lung adenocarcinoma (LUAD). His co-mentor is Dr.
Sandra Schmid, who was his mentor at UTSW and is a leader in the field of endocytic vesicle trafficking. Additional
input will come from Dr. Angela Wandinger-Ness (University of New Mexico), who identified Rab GTPases as
regulators of endosomal trafficking and is developing GTPase-targeted therapies for cancer. These investigators
have designed a training program centered on their key scientific disciplines that will strengthen Dr. Xiao’s abilities
in their respective fields and provide the skills needed for a smooth transition to independence.
Research: EMT induction in cancer cells initiates the metastatic cascade by promoting motility and invasiveness
through cell-autonomous mechanisms. Our group has shown that EMT also increases the secretion of proteins
that maintain LUAD cell viability and create an immunosuppressive and fibrotic tumor microenvironment (TME)
that facilitates LUAD metastasis. These findings are the basis for our hypothesis that EMT promotes LUAD
metastasis through dual cell-autonomous and non-autonomous mechanisms. The objective of my proposal is to
elucidate the molecular underpinnings of EMT-dependent secretion in LUAD. In my preliminary results, I show that
the EMT-activating transcription factor ZEB1 upregulates the expression of Rab6A and Rab8A by silencing
microRNAs that target these effectors. I show that ZEB1 requires Rab6A and Rab8A to drive polarized trafficking
of secretory vesicles toward the leading edge of migrating LUAD cells, to increase cytokine secretion, to generate
an immunosuppressive TME, and to promote LUAD cell migration, invasion, and metastasis. Because secretory
vesicle exocytosis occurs at hot spots juxtaposed to focal adhesions, I hypothesize that ZEB1 coordinately
regulates anterograde trafficking of secretory vesicles and remodeling of actin-based cytoskeletal structures to
initiate polarized secretion of pro-tumorigenic effector proteins that drive LUAD progression. I will test this
hypothesis by determining how ZEB1 coordinately regulates anterograde vesicle trafficking and cytoskeletal
remodeling to drive polarized secretion of pro-tumorigenic effector proteins and LUAD progression.
In sum, my proposal will address the clinical problem of LUAD metastasis. The novelty rests in preliminary results
that demonstrate a transcriptional governance of polarized vesicular transport, providing the potential to target
ZEB1-driven secretory pathways for the purpose of blocking metastasis in LUAD.
项目摘要/摘要
候选人:Xiao博士接受了细胞和癌症生物学的广泛培训,包括在UT-的博士后培训
西南医疗中心(UTSW)和MD安德森癌症中心(MDACC)。他看到要了解如何
上皮到间质转变(EMT)驱动恶性分泌以促进肺癌转移。小博士
是一位高产的研究员,有4张由同行评审的第4篇论文。作为对他的成就的认可,
在他的博士和博士后培训期间,他获得了许多奖项。
职业发展/培训:Xiao博士的主要心理是乔纳森·库里(Jonathan Kurie)博士,
人肺腺癌(LUAD)的癌症生物学和小鼠建模方面的专业知识。他的院长是博士。
桑德拉·施密德(Sandra Schmid)是他在UTSW的导师,并且是贩运内吞蔬菜领域的领导者。额外的
投入将来自安吉拉·旺德格尼斯(Angela Wandinger-ness)博士(新墨西哥大学)
内体贩运的调节剂,正在开发针对GTPase的癌症疗法。这些调查人员
设计了一个以关键科学学科为中心的培训计划,该课程将增强Xiao博士的能力
在相对领域,并提供平稳过渡到独立所需的技能。
研究:癌细胞中的EMT通过促进运动和侵入性来启动转移性级联
通过细胞自主机制。我们的小组表明,EMT还增加了蛋白质的分泌
维持LUAD细胞活力并创建免疫抑制和纤维化的肿瘤微环境(TME)
这有助于Luad转移。这些发现是我们假设EMT促进luad的假设的基础
通过双重细胞自主和非自主机制转移。我的提议的目的是
阐明了luad中EMT依赖性分泌的分子基础。在我的初步结果中,我表明
EMT激活转录因子ZEB1通过沉默来上调Rab6a和Rab8a的表达
针对这些影响的microRNA。我表明Zeb1需要Rab6a和Rab8a驱动两极分化的贩运
分泌蔬菜朝向迁移的luad细胞的前沿,增加细胞因子分泌,以产生
免疫抑制性TME,并促进luAD细胞迁移,侵袭和转移。因为分泌
囊泡胞吐作用发生在与焦点粘附并置的热点,我假设Zeb1协调一致
调节秘书的顺行贩运和基于肌动蛋白的细胞骨架结构的重塑
启动促进LUAD进展的促肿瘤效应蛋白的极化分泌。我会测试这个
通过确定Zeb1如何协调调节顺行囊泡和细胞骨架的假设
重塑以驱动促瘤性效应蛋白和LUAD进展的极化分泌。
总而言之,我的建议将解决luad转移的临床问题。新颖性取决于初步结果
这表明了极化囊泡运输的转录治理,从而提供了目标的潜力
Zeb1驱动的分泌途径是为了阻止Luad转移的目的。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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