Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
批准号:
10089455
负责人:
Oleg A Andreev
金额:
$57.93万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2006
资助国家:
美国
项目状态:
已结题
起止时间:
2006-05-15 至 2024-01-31
关键词:
AcidityAlgorithmsAmanitinsAntibodiesAntibody-drug conjugatesAreaBasic ScienceBioinformaticsBiological MarkersBreast Cancer PatientC-terminalCell surfaceCellsChemicalsClinical TrialsComputer ModelsCyclic PeptidesDNAData SetDatabasesDevelopmentDiagnosisDiseaseExcipientsFluorescent DyesGoalsGrantHandHydrophobicityKineticsLearningLengthLinkLipidsMalignant neoplasm of urinary bladderMeasuresMediatingMedicineMembraneMemorial Sloan-Kettering Cancer CenterMethodsModelingModernizationMolecularOperative Surgical ProceduresOutcomePeptidesPerfusionPeriodicityPermeabilityPharmaceutical PreparationsPhasePhase I Clinical TrialsPositron-Emission TomographyPropertyPublishingRNA Polymerase IIRNA Polymerase InhibitorResearchResistanceSolubilityStructureTestingTherapeuticTherapeutic AgentsTherapeutic EffectTherapeutic StudiesToxinTubulinTumor MarkersVariantVesicleWorkalpha helixbasebiophysical techniquescancer cellcancer imagingclinical applicationdesignexpectationfluorescence imagingfluorescence-guided surgeryimage guidedimaging agentin vivoinsightiterative designmodel designmolecular dynamicsneoplastic cellnon-drugnovelnovel diagnosticsnuclear imagingpH gradientpolypeptideside effecttargeted agenttargeted deliverytargeted imagingtargeted treatmenttreatment strategytumor
中文摘要
项目摘要/摘要:
--
我们现在对PHLIPs(低pH值插入多肽)的理解使我们能够设计出一种新颖的、高pH值的多肽。
敏感的靶向药物是指可以利用肿瘤细胞表面的酸性作为新的生物标志物的药物。这项工作得到了科学家的支持。
这项新的拨款项目已经产生了一种新的核诊断和核素成像试剂(PET-pHLIP),并产生了一种新的新的荧光。
成像辅助剂用于图像引导的外科手术和介入治疗(ICG--PHLIP),目前正在进行临床试验。
斯隆-凯特琳癌症研究中心纪念馆于2019年9月开幕。
此次续建工作的主要着力点是使极地生物的定向投放和适度投放成为可能。
疏水分子和治疗性分子。我们将提出一种更系统的方法,使用从3月开始的具有代表性的药物。
具有不同的物理、化学和功能性质的治疗药物分子的类别:(I)是一种药物。
中度疏水,极小的细胞渗透性,较小的药物分子:;(II),中等极性,
细胞-不渗透,环状,刚性,更大的药物:(Amanitin;;,和(Iii)是一种大的,非极性的,细胞不渗透的药物:
--
--
Calicheamicin。这些药物中的每一种目前都在开发中,或正在作为一种新的抗体-药物结合物使用。
弹头,但有一些重要的技术限制,以支持新的抗体方法,包括有限的生物标记物。
可获得性、对选择的抵抗力、有限的治疗用药窗口和有限的药物交付,通常与1%的医疗费用有关。
构建到达肿瘤表面的结构。我们的方法是基于肿瘤的酸性,特别是肿瘤细胞表面的目标。
PH表示,这是在不同肿瘤之间、不同肿瘤之间、不同肿瘤之间以及肿瘤血流灌注的独立范围内的一个重要的通用参数。
我们建议探索PHLIP基因序列的变异规律,引入PHLIP-循环,并开发PHLIP-捆绑。
这些具有治疗作用的货物中的每一种都需要交付。此外,还将对其结构进行测试,以确定其插入稳定性和稳定性。
动力学,正在使用生物物理方法和计算模型。我们将在细胞、细胞和细胞中进一步评估它们的活性。
有前景的新结构还将在体内进行全面评估。我们还将积累一个新的参数数据库--PHLIP-Cargo。
物业管理公司和他们使用现代生物信息学和算法来分析他们的整个公司数据集,以揭示他们的主要设计。
原则性。
通过对这些具有不同PHLIPs的治疗性药物的研究,我们希望能够找到一种新的原则,用于更大范围的靶向给药。
其他的化合物。如果我们不能取得成功,那么抗体和药物的结合物用于治疗疾病的限制将不会被接受。
我们也将克服、克服和加深对这一膜和屏障的认识。这是我们对未来的期待。
一位成功的候选人申请了膀胱癌的新治疗方案,这是该方案续期的最实际的结果。
英文摘要
PROJECT SUMMARY/ABSTRACT
The understanding we now have of the pHLIPs (pH-Low Insertion Peptides) enables the design of novel, pH-
sensitive targeting agents that use the acidity of tumor cell surfaces as a biomarker. The work supported by
this grant has already yielded a new diagnostic nuclear imaging agent (PET-pHLIP) and a new fluorescent
imaging agent for image-guided surgical interventions (ICG-pHLIP), which are advancing to clinical trials at
Memorial Sloan Kettering Cancer Center in 2019.
The primary focus of this continuation is to enable targeted intracellular delivery of polar and moderately
hydrophobic therapeutic molecules. We propose a systematic approach using representative cargoes from 3
classes of therapeutic molecules that possess different physical, chemical and functional properties: i) a
moderately hydrophobic, sparingly cell-permeable, small drug molecule: mertansine;; ii) a moderately polar,
cell-impermeable, cyclic, rigid, larger drug: amanitin;; and iii) a large, polar, cell-impermeable drug:
calicheamicin. Each of these drugs is currently under development or in use as an antibody-drug conjugate
warhead, but there are important limitations to the antibody approaches, including limited biomarker
availability, resistance selection, a narrow therapeutic window and limited delivery, often with < 1% of a
construct reaching the tumor. Our approach is based on targeting tumor acidity, especially cancer cell surface
pH that is a general parameter within and among different tumors, and independent of tumor perfusion.
We propose to explore variation of pHLIP sequences, introduce pHLIP-cycles and exploit pHLIP-bundles for
delivery of these therapeutic cargoes. The pHLIP-cargo constructs will be tested for insertion stability and
kinetics, using biophysical methods and computational modelling. Activity will be evaluated in cells, and
promising constructs will be assessed in vivo. We will accumulate a parameter database of pHLIP-cargo
properties and employ modern bioinformatics algorithms to analyze the entire data set to reveal major design
principles.
By studies of these therapeutic agents with pHLIPs, we hope to find principles for targeted delivery of a range
of other compounds. Should we be successful, the limitations of antibody drug conjugates for therapy will be
overcome, and greater understanding of the membrane barrier will also be in hand. Our expectation is to have
a candidate for the treatment of bladder cancer as the practical outcome of this grant renewal.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Mapping pH at the surface of individual cell
-
批准号:8547803
-
项目类别:
-
资助金额:$22.33万
-
财政年份:2012
-
负责人:Oleg A Andreev
-
依托单位:
Mapping pH at the surface of individual cell
-
批准号:8413926
-
项目类别:
-
资助金额:$19.14万
-
财政年份:2012
-
负责人:Oleg A Andreev
-
依托单位:
pHLIP Nanotechnology Platform for Cancer Imaging and Therapy
-
批准号:7910974
-
项目类别:
-
资助金额:$58.16万
-
财政年份:2009
-
负责人:Oleg A Andreev
-
依托单位:
pHLIP Nanotechnology Platform for Cancer Imaging and Therapy
-
批准号:8266880
-
项目类别:
-
资助金额:$67.48万
-
财政年份:2008
-
负责人:Oleg A Andreev
-
依托单位:
pHLIP Nanotechnology Platform for Cancer Imaging and Therapy
-
批准号:7640915
-
项目类别:
-
资助金额:$65.87万
-
财政年份:2008
-
负责人:Oleg A Andreev
-
依托单位:
pHLIP Nanotechnology Platform for Cancer Imaging and Therapy
-
批准号:8079618
-
项目类别:
-
资助金额:$67.56万
-
财政年份:2008
-
负责人:Oleg A Andreev
-
依托单位:
New Technology for Selective Delivery of PNAs in Cancer Cells In Vitro and In Viv
-
批准号:7290218
-
项目类别:
-
资助金额:$14.78万
-
财政年份:2007
-
负责人:Oleg A Andreev
-
依托单位:
New Technology for Selective Delivery of PNAs in Cancer Cells In Vitro and In Viv
-
批准号:7483276
-
项目类别:
-
资助金额:$12.98万
-
财政年份:2007
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:8106730
-
项目类别:
-
资助金额:$51.3万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:8280406
-
项目类别:
-
资助金额:$48.56万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:10343727
-
项目类别:
-
资助金额:$58.16万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:8488443
-
项目类别:
-
资助金额:$46.99万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:9027594
-
项目类别:
-
资助金额:$58.16万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:8668993
-
项目类别:
-
资助金额:$48.71万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
Mechanism and Uses of Transmembrane Helix Insertion by Soluble Peptides
-
批准号:10586116
-
项目类别:
-
资助金额:$58.28万
-
财政年份:2006
-
负责人:Oleg A Andreev
-
依托单位:
海外基金