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Challenges for the application of EGFR-targeting peptide GE11 in tumor diagnosis and treatment. J Control Release 2022; 349:592-605. [PMID: 35872181 DOI: 10.1016/j.jconrel.2022.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 11/20/2022]
Abstract
Abnormal regulation of cell signaling pathways on cell survival, proliferation and migration contributes to the development of malignant tumors. Among them, epidermal growth factor receptor (EGFR) is one of the most important biomarkers in many types of malignant solid tumors. Its over-expression and mutation status can be served as a biomarker to identify patients who can be benifit from EGFR tyrosine kinase inhibitors and anti-EGFR monocloncal antibody (mAb) therapy. For decades, researches on EGFR targeted ligands were actively carried out to identify potent candidates for cancer therapy. An ideal EGFR ligand can competitively inhibit the binding of endogenous growth factor, such as epidermal growth factor (EGF) and transforming growth factor-α(TGF-α) to EGFR, thus block EGFR signaling pathway and downregulate EGFR expression. Alternatively, conjugation of EGFR ligands on drug delivery systems (DDS) can facilitate targeting delivery of therapeutics or diagnostic agents to EGFR over-expression tumors via EGFR-mediated endocytosis. GE11 peptide is one of the potent EGFR ligand screened from a phage display peptide library. It is a dodecapeptide that can specifically binds to EGFR with high affinity and selectivity. GE11 has been widely used in the diagnosis and targeted delivery of drugs for radiotherapy, genetherapy and chemotherpy against EGFR positive tumors. In this review, the critical factors affecting the in vivo and in vitro targeting performance of GE11 peptide, including ligand-receptor intermolecular force, linker bond properties and physiochemical properties of carrier materials, are detailedly interpreted. This review provides a valuable vision for the rational design and optimization of GE11-based active targeting strategies for cancer treatment, and it will promote the translation studies of GE11 from lab research to clinical application.
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Du R, Li X, Ma YH, Luo Y, Wang C, Ma Q, Lu X. Exploring Interfacial Hydrolysis of Artificial Neutral Lipid Monolayer and Bilayer Catalyzed by Phospholipase C. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8104-8113. [PMID: 35749224 DOI: 10.1021/acs.langmuir.2c00995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Phospholipase C (PLC) represents an important type of enzymes with the feature of hydrolyzing phospholipids at the position of the glycerophosphate bond, among which PLC extracted from Bacillus cereus (BC-PLC) has been extensively studied owing to its similarity to hitherto poorly characterized mammalian analogues. This study focuses on investigating the interfacial hydrolysis mechanism of phosphatidylcholine (PC) monolayer and bilayer membranes catalyzed by BC-PLC using sum frequency generation vibrational spectroscopy (SFG-VS) and laser scanning confocal microscopy (LSCM). We found that, upon interfacial hydrolysis, BC-PLC was adsorbed onto the lipid interface and catalyzed the lipolysis with no net orientation, as evidenced by the silent amide I band, indicating that ordered PLC alignment was not a prerequisite for the enzyme activity, which is very different from what we have reported for phospholipase A1 (PLA1) and phospholipase A2 (PLA2) [Kai, S. Phys. Chem. Chem. Phys. 2018, 20(1), 63-67; Wang, F. Langmuir 2019, 35(39), 12831-12838; Zhang, F. Langmuir 2020, 36(11), 2946-2953]. For the PC monolayer, one of the two hydrolysates, phosphocholine, desorbed from the interface into the aqueous phase, while the other one, diacylglycerol (DG), stayed well packed with high order at the interface. For the PC bilayer, phosphocholine dispersed into the aqueous phase too, similar to the monolayer case; however, DG, presumably formed clusters with the unreacted lipid substrates and desorbed from the interface. With respect to both the monolayer and bilayer cases, mechanistic schematics were presented to illustrate the different interfacial hydrolysis processes. Therefore, this model experimental study in vitro provides significant molecular-level insights and contributes necessary knowledge to reveal the lipolysis kinetics with respect to PLC and lipid membranes with monolayer and bilayer structures.
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Affiliation(s)
- Rongrong Du
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Xu Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Yong-Hao Ma
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Yongsheng Luo
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Chu Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
| | - Qian Ma
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, P. R. China
- Department of General Dentistry, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, P. R. China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
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Chen Y, Yi X, Pan MH, Chiou YS, Li Z, Wei S, Yin X, Ding B. The interaction mechanism between liposome and whey protein: Effect of liposomal vesicles concentration. J Food Sci 2021; 86:2491-2498. [PMID: 33929043 DOI: 10.1111/1750-3841.15708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 03/03/2021] [Accepted: 03/09/2021] [Indexed: 12/01/2022]
Abstract
The interaction mechanism between liposomes (Lips) and whey protein isolates (WPI) with different mass ratios was explored in this paper. After binding with different concentration of Lips, the changes in hydrophilic and hydrophobic regions of WPI were investigated with fluorescein isothiocyanate (FITC) and pyrene fluorescence probes. The spatial structure changes of WPI were further characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, and circular dichroism. The results indicated that the structure of WPI was changed due to binding with Lips in hydrophilic and hydrophobic groups. The binding process might result in the migration, recombination, and alignment of WPI and Lip groups. Moreover, the oil-water interfacial tension with WPI decreased from 9.20 mN/m to 3.29 mN/m upon increasing the Lip-to-WPI ratio. This work suggests that the physiochemical properties of Lip-WPI complexes could be manipulated by adjusting the Lip-to-WPI ratio. This study shed some light on the mechanism explanation of the WPI structural changes due to the interaction with Lips during food processing.
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Affiliation(s)
- Yang Chen
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China
| | - Xiangzhou Yi
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China.,College of Food Science and Technology, Hainan University, Haikou, Hainan, 570228, P.R. China
| | - Min-Hsiung Pan
- Institute of Food Sciences and Technology, National Taiwan University, Taipei, Taiwan, 10617, Republic of China
| | - Yi-Shiou Chiou
- Tsinghua-Berkeley Shenzhen Institute, Shenzhen, P.R. China
| | - Zhenshun Li
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China
| | - Shudong Wei
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China
| | - Xiaoli Yin
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China
| | - Baomiao Ding
- College of Life Science, Yangtze University, Jingzhou, Hubei, 434025, P. R. China.,Institute of Food Sciences and Technology, National Taiwan University, Taipei, Taiwan, 10617, Republic of China
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Li Y, Du L, Wu C, Yu B, Zhang H, An F. Peptide Sequence-Dominated Enzyme-Responsive Nanoplatform for Anticancer Drug Delivery. Curr Top Med Chem 2019; 19:74-97. [PMID: 30686257 DOI: 10.2174/1568026619666190125144621] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/06/2018] [Accepted: 11/23/2018] [Indexed: 02/08/2023]
Abstract
Enzymatic dysregulation in tumor and intracellular microenvironments has made this property
a tremendously promising responsive element for efficient diagnostics, carrier targeting, and drug
release. When combined with nanotechnology, enzyme-responsive drug delivery systems (DDSs) have
achieved substantial advancements. In the first part of this tutorial review, changes in tumor and intracellular
microenvironmental factors, particularly the enzymatic index, are described. Subsequently, the
peptide sequences of various enzyme-triggered nanomaterials are summarized for their uses in various
drug delivery applications. Then, some other enzyme responsive nanostructures are discussed. Finally,
the future opportunities and challenges are discussed. In brief, this review can provide inspiration and
impetus for exploiting more promising internal enzyme stimuli-responsive nanoDDSs for targeted tumor
diagnosis and treatment.
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Affiliation(s)
- Yanan Li
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Liping Du
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Chunsheng Wu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Hui Zhang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Feifei An
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
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