2
|
Schaefer A, Naser D, Siebeneichler B, Tarasca MV, Meiering EM. Methodological advances and strategies for high resolution structure determination of cellular protein aggregates. J Biol Chem 2022; 298:102197. [PMID: 35760099 PMCID: PMC9396402 DOI: 10.1016/j.jbc.2022.102197] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 01/14/2023] Open
Abstract
Aggregation of proteins is at the nexus of molecular processes crucial to aging, disease, and employing proteins for biotechnology and medical applications. There has been much recent progress in determining the structural features of protein aggregates that form in cells; yet, owing to prevalent heterogeneity in aggregation, many aspects remain obscure and often experimentally intractable to define. Here, we review recent results of structural studies for cell-derived aggregates of normally globular proteins, with a focus on high-resolution methods for their analysis and prediction. Complementary results obtained by solid-state NMR spectroscopy, FTIR spectroscopy and microspectroscopy, cryo-EM, and amide hydrogen/deuterium exchange measured by NMR and mass spectrometry, applied to bacterial inclusion bodies and disease inclusions, are uncovering novel information on in-cell aggregation patterns as well as great diversity in the structural features of useful and aberrant protein aggregates. Using these advances as a guide, this review aims to advise the reader on which combination of approaches may be the most appropriate to apply to their unique system.
Collapse
Affiliation(s)
- Anna Schaefer
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
| | - Dalia Naser
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
| | | | - Michael V Tarasca
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
| | | |
Collapse
|
3
|
Wang C, Yang X, Jiang Y, Qi L, Zhuge D, Xu T, Guo Y, Deng M, Zhang W, Tian D, Yin Q, Li L, Zhang Z, Wang Y, Yang GY, Chen Y, Tang Y. Targeted delivery of fat extract by platelet membrane-cloaked nanocarriers for the treatment of ischemic stroke. J Nanobiotechnology 2022; 20:249. [PMID: 35642036 PMCID: PMC9153102 DOI: 10.1186/s12951-022-01461-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Our previous studies suggest that human fat extract (FE) contains a variety of angiogenic factors and may provide an alternative treatment option for stroke. However, the therapeutic effect is largely limited due to its short half-life, and inaccurate targeting. RESULTS Herein, we leverage the targeting abilities of platelets (PLTs) to the lesion area of stroke and Arg-Gly-Asp (RGD) peptides to the angiogenic blood vessels to develop a biomimetic nanocarrier that capable of delivering FE precisely to treat stroke. The biomimetic nanocarriers are comprised of FE-encapsulated PLGA (poly(lactic-co-glycolic acid)) core enclosed by RGD peptides decorated plasma membrane of PLTs, namely RGD-PLT@PLGA-FE. We found that RGD-PLT@PLGA-FE not only targeted damaged and inflamed blood vessels but also achieved rapid accumulation in the lesion area of ischemic brain. In addition, RGD-PLT@PLGA-FE kept a sustained release behavior of FE at the lesion site, effectively increased its half-life and promoted angiogenesis and neurogenesis with delivering neurotrophic factors including BDNF, GDNF and bFGF to the brain, that ultimately resulted in blood flow increase and neurobehavioral recovery. CONCLUSIONS In conclusion, our study provides a new strategy to design a biomimetic system for FE delivery and it is a promising modality for stroke therapy.
Collapse
Affiliation(s)
- Cheng Wang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Xuewei Yang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China
| | - Yixu Jiang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Lin Qi
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Deli Zhuge
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China
| | - Tongtong Xu
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Yiyan Guo
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Mingwu Deng
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, China
| | - Wenjie Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, China
| | - Dongyan Tian
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China
| | - Qingqing Yin
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China
| | - Li Li
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China
| | - Zhijun Zhang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Yongting Wang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Guo-Yuan Yang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China
| | - Yijie Chen
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, China.
| | - Yaohui Tang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai, 200030, China.
| |
Collapse
|
5
|
Wang ZW, Wang LP, Du Y, Liu Q. Mutations in NOTCH3 Gene may Promote the Clinical Presentation of Spinocerebellar Ataxia Type 37 Caused by Mutations in DAB1 Gene. Front Mol Biosci 2021; 8:668312. [PMID: 34222332 PMCID: PMC8243652 DOI: 10.3389/fmolb.2021.668312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Autosomal dominant spinocerebellar ataxia type 37 (SCA37) and Cerebral autosomal dominant arteriopathy with subcortical infarct and leukoencephalopathy (CADASIL) result from DAB1 and NOTCH3 gene mutations, respectively. Methods: In addition to conventional diagnostic methods, next-generation sequencing (NGS) and Sanger sequencing were performed to define and confirm the DAB1 and NOTCH3 gene mutation for a Chinese pedigree. Bioinformatics analysis was also applied for the mutated DAB1 and NOTCH3 protein using available software tools. Results: Brain magnetic resonance imaging shows diffuse leukoencephalopathy and cerebellar atrophy in the proband. NGS and Sanger sequencing identified two novel heterozygous mutations: NM_021080:c.318T > G (p.H106Q) in the DAB1 gene and NM_000435:c.3298C > T (p.R1100C) in the NOTCH3 gene. Bioinformatics analysis suggested that the DAB1 and NOTCH3 gene mutations are disease-causing and may be responsible for the phenotypes. Conclusion: This is the first report of a pedigree with both SAC37 and CADASIL phenotypes carrying corresponding gene mutations. Mutations in the NOTCH3 gene may promote the clinical presentation of spinocerebellar ataxia type 37 caused by mutations in the DAB1 gene. In addition to general examinations, it is vital for physicians to apply molecular genetics to get an accurate diagnosis in the clinic, especially for rare diseases.
Collapse
Affiliation(s)
- Zhao-Wei Wang
- Department of Neurology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Li-Ping Wang
- Department of Neurology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Ye Du
- Department of Neurology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Qi Liu
- Department of Transfusion, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| |
Collapse
|