A pro-metastatic secretory program activated by epithelial-to-mesenchymal transition
A pro-metastatic secretory program activated by epithelial-to-mesenchymal transition
批准号:
10294733
负责人:
GUAN-YU XIAO
金额:
$11.19万
依托单位国家:
美国
项目类别:
财政年份:
2021
资助国家:
美国
项目状态:
已结题
起止时间:
2021-09-15 至 2023-08-31
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
中文摘要
项目摘要/摘要:
候选人:王晓东博士曾接受过广泛的细胞生物学和癌症生物学专业培训,包括加州大学博士后专业培训课程。
西南医学研究中心(UTSW)和安德森癌症研究中心(MDACC)的医学博士。他正在寻求帮助,以进一步了解他们是如何做到这一点的。
上皮间充质细胞转化因子(EMT)驱动恶性细胞分泌,从而促进肺癌和转移。
他是一位工作效率很高的研究人员,拥有4篇第一作者和同行评议的论文。这是对他个人成就的认可。
在他的博士学位和博士后培训期间,他获得了无数的荣誉奖项。
职业发展/培训:王晓博士的主要导师是乔纳森·库里博士,他是中国医学会的首席内科医生兼科学家。
他在癌症、生物学和人类肺腺癌(LUAD)的小鼠模型研究方面拥有专业知识。他的另一位联合导师是李博士。
桑德拉·施密德曾是他在加州大学斯威夫特分校的导师,现在是内吞细胞囊泡贩运领域的领导者。
输入信息将来自美国新墨西哥州大学的Angela Wandinger-ness博士,他被确认为Rab和GTP酶。
负责内体药物贩运的监管机构正在开发针对肺癌的GTPase靶向药物。这些调查人员。
他们设计了一个以他们的关键科学和技术学科为中心的高级培训计划,这将进一步增强李晓博士的能力。
此外,他们各自的领域也为他们提供了实现向独立的平稳过渡所需的必要技能。
研究:EMT通过促进肿瘤细胞运动和侵袭,诱导肿瘤细胞发生转移级联反应
通过细胞自主分泌机制,我们的研究小组已经证明,EMT还可以增加蛋白质的分泌能力。
这将维持LUAD细胞的活力,并创造一个新的免疫抑制机制和纤维化的肿瘤微环境环境(TME)。
这有助于LUAD的转移。这些发现是我们提出的假设的主要依据,即EMT促进LUAD的发生。
转移是通过双重的细胞自主机制和非自主的细胞机制进行的。我的建议的主要目标是。
阐明在LUAD中依赖EMT的细胞分泌的分子基础。在我的初步研究结果中,我将展示这一点。
EEMT激活转录调节因子ZEB1通过沉默上调基因Rab6A和Rab8A的基因表达水平。
MicroRNAs认为,这些效应器可能是靶点。我可以证明,ZEB1需要使用Rab6A和Rab8A来推动两极分化的人口贩运。
大量的分泌小泡朝向LUAD移行细胞的前沿,有助于增加细胞因子的分泌,从而促进细胞的生成。
一种有效的免疫抑制药物TME,可以促进LUAD细胞的迁移、侵袭、转移和转移。这是因为它的分泌功能。
囊泡和胞吐通常发生在与ZEB1并列的热点区域,导致局部粘连,我假设ZEB1是协同作用的。
监管以肌动蛋白为基础的细胞骨架骨架结构的顺行贩运和细胞骨架结构的重塑。
启动促肿瘤效应蛋白的两极化分泌,这些蛋白可以推动LUAD的进展。我将不会测试这一点。
通过确定ZEB1是如何协调调节顺行、囊泡和细胞骨架的,提出了假说。
重塑有助于推动促肿瘤效应蛋白的两极化分泌和LUAD的进展。
总而言之,我的建议将不会解决LUAD转移的主要临床问题。更大的新颖性在于初步的治疗结果。
这将展示一种两极分化的水泡交通的一种新的转录和治理模式,并为实现目标提供更多潜在的模式。
ZEB1驱动的肿瘤分泌通路是为了实现在LUAD中阻断肿瘤转移的最终目的。
英文摘要
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.
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