Glycoengineering of Therapeutic Peptides for Improved Treatment of Human Diseases
用于改善人类疾病治疗的治疗性肽的糖工程
基本信息
- 批准号:9754137
- 负责人:
- 金额:$ 33.41万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-08-01 至 2022-04-30
- 项目状态:已结题
- 来源:
- 关键词:AddressAffectAgonistAmino Acid SequenceAnimalsAttentionBiochemistryBiologicalBiological AvailabilityBiological ProductsBiophysicsCalcitoninCellular biologyChemicalsChronicChronic DiseaseCollectionCommunicable DiseasesComplexDangerousnessDataDevelopmentDiabetes MellitusDisadvantagedDoseEngineeringEnvironmentFrequenciesGLP-I receptorGoalsGuidelinesHumanInflammatoryInfluentialsInjectionsInsulinIntestinesLeadLibrariesLinkMalignant NeoplasmsMetabolic DiseasesMethodsModelingModificationMolecular ConformationNatureNon-Insulin-Dependent Diabetes MellitusOralPainPatientsPatternPeptide HydrolasesPeptidesPerformancePharmaceutical PreparationsPolymersPolysaccharidesPreparationProcessPropertyProtein GlycosylationResearchResistanceRouteSiteSmall IntestinesSpecificityStomachStressStructureSubcutaneous InjectionsT-20TechniquesTechnologyTestingTherapeuticTimeVariantWorkabsorptionbasechemical synthesiscompliance behaviorcrosslinkdesigndiabeticdisulfide bondexenatideflexibilityglucagon-like peptide 1glycosylated insulinglycosylationhuman diseaseimprovedliraglutidenovel therapeuticspeptide drugpeptide structurephysical propertypolymerizationside effectsmall moleculesugarteduglutidetool
项目摘要
Project Summary
Peptides are now widely used to treat human diseases and represent a fast-growing class of therapeutics in
the biopharmaceutical market. In general, peptides have the advantages of high specificity and potency but the
disadvantages of being susceptible to aggregation and proteolytic degradation. Because of these drawbacks,
therapeutic peptides are often administered through injections and, in order to maintain sufficient levels of
circulating biologically active peptides, such injections are often frequent. This makes the treatment process
expensive, inconvenient, and occasionally dangerous to patients, particularly during long-term treatment of
chronic diseases. To address these issues, many attempts have been made to develop less invasive routes for
peptide administration. By selectively retarding drug release in the acidic environment of the stomach through
the use of pH sensitive polymers, peptides can now be efficiently conveyed to the small intestine, where the
majority of drug absorption occurs after oral delivery. The absorption of peptides in the small intestine is not,
however, free of challenges. For example, self-association and degradation by proteases located in the small
intestinal lumen can significantly lower the bioavailability of peptides.
Recently, we have demonstrated that almost all of the relevant physical properties of peptides can be
altered by attaching particular glycans to flexible or fragile regions. Based on these results, we hypothesize
that better guidelines of using glycans in peptide engineering can be developed by deeply examining the
effects of glycosylation on two representative therapeutic peptides: human insulin and glucagon-like peptide-1
(GLP-1). The objective of our proposed research is to test this hypothesis through chemical synthesis and
biological characterization of collections of differently O-glycosylated insulin and GLP-1 variants. We will begin
our study by investigating how O-linked glycans modulate various properties of insulin. This will be achieved by
designing, quantifying and then comparing the properties of a library of synthetically prepared, pure, and
homogeneous insulin glycoforms with systematic variations in glycosylation patterns (glycosylation sites,
glycan sizes and structures) and/or amino acid sequences. In the second part of the study, we will use a
similar strategy to evaluate the effects of O-glycosylation on the properties of GLP-1.
The proposed study is one of the first attempts to develop a rational approach to glycoengineer therapeutic
peptides with a focus on O-glycosylation. The results of the proposed research are expected to lead to a better
understanding of peptide glycoengineering, O-glycosylation, and facilitate the development of novel therapeutic
peptides for the treatment of human diseases.
项目摘要
肽现在被广泛用于治疗人类疾病,并且代表了快速增长的一类治疗剂,
一般来说,肽具有高特异性和效力的优点,但
易受聚集和蛋白水解降解的缺点。由于这些缺点,
治疗性肽通常通过注射给药,
循环生物活性肽,这种注射通常很频繁。这使得治疗过程
昂贵,不方便,有时对患者有危险,特别是在长期治疗期间,
为了解决这些问题,已经进行了许多尝试来开发用于治疗慢性疾病的侵入性较小的途径。
通过选择性地延迟药物在胃的酸性环境中的释放,
由于使用pH敏感聚合物,肽现在可以有效地输送到小肠,
大多数药物的吸收发生在口服给药后,肽类在小肠中的吸收不是,
然而,没有挑战。例如,位于小分子中的蛋白酶的自我结合和降解。
肠腔可以显着降低肽的生物利用度。
最近,我们已经证明,肽的几乎所有相关的物理性质都可以被改变。
通过将特定的聚糖附着在柔性或脆性区域来改变。基于这些结果,我们假设
在肽工程中使用聚糖的更好的指导方针可以通过深入研究
糖基化对人胰岛素和胰高血糖素β 1样肽的影响
(GLP-我们提出的研究的目的是通过化学合成来验证这一假设,
我们将开始对收集的不同O-β糖基化胰岛素和GLP-β 1变体进行生物学表征。
我们的研究是通过研究O-β连接的聚糖如何调节胰岛素的各种特性来实现的。
设计、定量然后比较合成制备的、纯的和
在糖基化模式(糖基化位点,
聚糖大小和结构)和/或氨基酸序列。在研究的第二部分,我们将使用
类似的策略来评估O-β糖基化对GLP-GLP-1性质的影响。
这项研究是开发合理的糖工程治疗方法的首次尝试之一。
肽的重点是O-糖基化。拟议的研究结果预计将导致更好的
了解肽糖工程,O-糖基化,并促进新的治疗药物的开发
用于治疗人类疾病的肽。
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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{{ truncateString('TAREK SAMMAKIA', 18)}}的其他基金
Glycoengineering of Therapeutic Peptides for Improved Treatment of Human Diseases
用于改善人类疾病治疗的治疗性肽的糖工程
- 批准号:
9977199 - 财政年份:2018
- 资助金额:
$ 33.41万 - 项目类别:
Glycoengineering of Therapeutic Peptides for Improved Treatment of Human Diseases
用于改善人类疾病治疗的治疗性肽的糖工程
- 批准号:
10212388 - 财政年份:2018
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
2185975 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
2546019 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
6519516 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
2796764 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
New Methods for Stereoselective Addictions to Carbonyls
羰基立体选择性成瘾的新方法
- 批准号:
7486841 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
6385778 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
2185974 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
NEW METHODS FOR STEREOSELECTIVE ADDITIONS TO CARBONYLS
羰基立体选择性加成的新方法
- 批准号:
2185973 - 财政年份:1993
- 资助金额:
$ 33.41万 - 项目类别:
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