International Journal of Nanomedicine
·
2023
·
IF 8
Ping Sun,Wei Huang,Lin Kang,Mingji Jin,Bo Fan,Hongyan Jin,Qi-Ming Wang,Zhonggao Gao
Sun P, Huang W, Kang L, Jin M, Fan B, Jin H, Wang Q, Gao Z. Int J Nanomedicine. 2017;12:3221–3234At the authors request, the Editor and Publisher of International Journal of Nanomedicine wish to retract the published article. An investigation by the Publisher found overlap in images from Figure 5. Specifically, The image from Figure 5, 0 h, Blank, has been duplicated with the same image for Figure 5, 0 h, H6R6-NP.The image from Figure 5, 0h, Naked siRNA, has been duplicated with the same image for Figure 5, 0 h, H6R6-NP.The image from Figure 5, 24 h, Naked siRNA, has been duplicated with the same image for Figure 5, 24 h, H6R6-NP.The image from Figure 5, 48 h, Naked siRNA, has been duplicated with the image for Figure 5, 48 h, CS-NP.The authors cooperated with the investigation and provided data associated with the study. However, despite the authors’ assistance, they were unable to provide a satisfactory explanation for how the images came to be duplicated, and the validity of the published work could not be verified. The decision was made to retract the article and the authors agreed with this.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.
研究领域:
纳米技术
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癌症研究
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药物递送系统
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PubMed
高影响因子
Cancer Nanotechnology
·
2023
·Vol. 14
·期 1
·1-34
·
IF 5.7
Tan Tiantian,Feng Yuxin,Wang Weimin,Wang Rongrong,Yin Liyan,Zeng Yiying,Zeng Zhaowu,Xie Tian
Background In the current treatment of non-small cell lung cancer (NSCLC), traditional chemotherapy causes high toxicity, so it is necessary to develop safe chemical drug delivery vehicles clinically. Chemotherapy monotherapy is prone to drug resistance. Chemotherapy combined with other therapies such as nucleic acid drugs is an effective way to avoid drug resistance and the toxicity of continuous chemotherapy. In this study, chemotherapy and siRNA therapy were combined to treat paclitaxel-resistant NSCLC in order to increase efficacy and reduce toxicity. This study aims to develop a cabazitaxel-loaded human serum albumin nanoparticles (CTX-HSA-NPs) to improve the toxicity of traditional CTX-Tween 80 and increase targeting, and to develop a TGFβ-1 siRNA lipid Nanoparticles (TGFβ-1 siRNA LNP) combined with chemotherapy in the treatment of paclitaxel-resistant NSCLC. Results This study prepared CTX-HSA-NPs and TGFβ-1 siRNA LNP had small particle size, high encapsulation efficiency (EE). CTX-HSA-NPs lyophilized powder has high stability after dissolved. The antitumor effect of CTX-HSA-NPs on paclitaxel-resistant NSCLC was higher than that of CTX-Tween, and the toxicity was 1.8 times lower than that of CTX-Tween. More importantly, the combined treatment of TGFβ-1 siRNA LNP and CTX-HSA-NPs could effectively improve the antitumor efficacy of paclitaxel-resistant NSCLC in vivo and in vitro. The results of tumor immunohistochemistry showed that TGFβ-1 siRNA LNP significantly inhibited the expression of TGFβ-1, and compared with other groups, the expression of P-gp after low-dose CTX-HSA-NPs treatment was lower, which did not cause obvious drug resistance. Conclusions The antitumor effect of CTX-HSA-NPs on paclitaxel-resistant NSCLC was higher than that of CTX-Tween, and the toxicity was lower than that of CTX-Tween. TGFβ-1 siRNA LNP can treat paclitaxel-resistant NSCLC by inhibiting the express of TGFβ-1 mRNA. The combined treatment of TGFβ-1 siRNA LNP and CTX-HSA-NPs could effectively improve the antitumor efficacy of paclitaxel-resistant NSCLC. A combination therapy of chemotherapy and nucleic acid drugs could be an effective approach for treating paclitaxel-resistant NSCLC.
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高影响因子
JOURNAL OF DRUG TARGETING
·
2018
·
IF 3.408
Bohui Xu,Yan Xu,Gaoxing Su,Hongyan Zhu,Li Zong
Successful delivery of small interfering RNA (siRNA) into the cytoplasm of target cells relies on biocompatible and efficient vectors. In this study, a novel multifunctional core/shell nanoparticle [CS-SS-9R/BSA-c(RGDyK)] was developed to effectively deliver siVEGF to hepatocellular carcinoma cells (Bel-7402 cells). To improve the gene payload and transfection efficiency, a positively charged inner core (CS-SS-9R) was constructed by grafting nona-arginine (9R) onto chitosan (CS) using disulphide bonds. The negatively charged outer shell [BSA-c(RGDyK)] assembled on the surface of the inner core by electrostatic forces that shielded high cationic charges and provided improved targeting. The protein outer shell gradually detached from the inner core in the acidic lysosomal environment, leaving the cationic inner core exposed in order to escape from lysosomes. The nanoparticles were capable of delivering siVEGF into Bel-7402 cells via integrin receptor-mediated endocytosis. Successful lysosomal escape of the inner core and the rapid release of siVEGF into the cytoplasm resulted in a 78.9% decrease in VEGF expression and 81.2% inhibition of tumour cell proliferation. In conclusion, this nanoparticle is responsive to the intracellular environment and accurately delivered siRNA into the cytoplasm, providing a safe and highly efficient gene delivery strategy for cancer therapy.
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高影响因子
ACS Applied Polymer Materials
·
2025
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IF 4.7
Jinxuan He,Zhixiang Mou,Lan Chen,Qixian Chen,Xuduan Chen,Lixin Wei
Secondary hyperparathyroidism is driven by pathological overproduction of parathyroid hormone. Surgery is invasive, drug therapy offers only transient control, and both carry substantial side effects. Previous efforts to deliver siRNA to the parathyroid glands achieved only marginal efficacy because the constructs lacked a targeting ligand to overcome the organ’s limited vascular permeability and were rapidly cleared by renal filtration. This study provides a targeted RNA interference therapeutic strategy for treatment of secondary hyperparathyroidism by leveraging the angiogenic characteristics of parathyroid glands via systemic route. Particularly, we manufactured an Arg-Gyl-Asp (RGD)-conjugated siRNA delivery system that exploits the overexpression of integrins and increased vascular permeability in parathyroid glands to achieve preferential siRNA accumulation. The multifunctional cationic copolymers of RGD-poly(ethylene glycol) (PEG)-polylysine-azido [PLys(N3)] and PLys(ss-dibenzocyclooctyne: DBCO) were synthesized and characterized, demonstrating their ability to formulate robust nanocomplexes with small interference RNA [(siRNA): knockdown of parathyroid hormone (PTH)] by virtue of favorable reversible disulfide cross-linking (based on click reaction) post electrostatic complexation. These nanocomplexes exhibited prolonged systemic circulation, preferential accumulation in the angiogenic parathyroid glands, and active intracellular delivery, leading to significant suppression of PTH expression. In a parathyroid hyperplasia mouse model, the siPTH delivery construct from RGD–PEG-PLys(N3)&PLys(ss-DBCO) substantially reduced the serum PTH levels to near-normal values, highlighting the therapeutic potential of our siRNA delivery system. Hence, this RNAi approach outperforms conventional modalities by achieving rapid, potent, and sustained gene knockdown without surgical risk or chronic pharmacologic burden, establishing a paradigm for precision endocrine therapy.
研究领域:
分子生物学
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内分泌学
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纳米医学
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基因治疗
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药理学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xianhu Zeng,Tian Liu,Yi Teng,Zhipeng Li,Yan Liang,Dengshuai Wei,Guiming Zhang,Yong Sun,Shangcong Han
Renal cell carcinoma (RCC) has been extensively studied and is a paradigmatic example of a malignancy distinguished by metabolic reprogramming. Reprogramming lipid metabolism is crucial for determining the response and resistance to chemotherapy. To overcome this, we developed a modified nanomicelle delivery system comprising polyethyleneimine (PEI) as a positive charge donor and ibuprofen as the hydrophobic end. The overall system, denoted as SPPI, is PEGylated, conjugated with sialic acid, and plays a targeting role. This system successfully delivered siRNA to cancer cells by overcoming systemic and cellular barriers. The resulting conjugates form uniform, spherical nanomicelles (37.8 ± 0.9 nm; 25.5 ± 1.4 mV) with targeting ability, stability, efficient delivery, and low toxicity. The complicated and indirect way cholesterol affects ATP-binding cassette transporters was investigated. Administering SPPI/siMUC1 resulted in significant suppression of MUC1 expression and a 3.25-fold decrease in cholesterol synthesis compared to the control, and it subsequently reversed resistance to sunitinib by modulating P-GP, ABCG2, and MRP1 activities. Importantly, SPPI/siMUC1 nanomicelles demonstrated outstanding growth inhibition (72.2 %) of sunitinib-resistant 786-O cell xenografts and remarkable inhibitory effects on tumor metastasis (45.0 %) without observable systemic toxicity according to tissue analysis and weight change evaluation. The efficacy and safety of SPPI/siMUC1 in the treatment of ccRCC were demonstrated, especially after drug resistance develops. Thus, this study introduces a novel strategy for addressing drug resistance in metabolically active cancers by targeting the lipid metabolism pathway.
研究领域:
肿瘤学
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药理学
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纳米技术
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分子生物学
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DOI
高影响因子
Polysaccharides
·
2025
·Vol. 6
·期 3
·60
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IF 5.5
Viktor Korzhikov-Vlakh,Polina Teterina,Nina Gubina,Apollinariia Dzhuzha,Tatiana Tennikova,Evgenia Korzhikova-Vlakh
The synthesis of novel biodegradable polymers as non-viral vectors remains one of the challenging tasks in the field of gene delivery. In this study, the synthesis of the polysaccharide-g-polypeptide copolymers, namely, hyaluronic acid-g-polylysine (HA-g-PLys), using a copper-free strain-promoted azide-alkyne cycloaddition reaction was proposed. For this purpose, hyaluronic acid was modified with dibenzocyclooctyne moieties, and poly-L-lysine with a terminal azido group was obtained using ring-opening polymerization ofN-carboxyanhydride of the corresponding protected amino acid, initiated with the amino group azido-PEG3-amine. Two HA-g-PLys samples with different degrees of grafting were synthesized, and the structures of all modified and synthesized polymers were confirmed using1H NMR and FTIR spectroscopy. The HA-g-PLys samples obtained were able to form nanoparticles in aqueous media due to self-assembly driven by electrostatic interactions. The binding of DNA and model siRNA by copolymers to form polyplexes was analyzed using ethidium bromide, agarose gel electrophoresis, and SybrGreen I assays. The hydrodynamic diameter of polyplexes was ˂300 nm (polydispersity index, PDI ˂ 0.3). The release of a model fluorescently-labeled oligonucleotide in the complex biological medium was significantly higher in the case of HA-g-PLys as compared to that in the case of PLys-based polyplexes. In addition, the cytotoxicity in normal and cancer cells, as well as the ability of HA-g-PLys to facilitate intracellular delivery of anti-GFP siRNA to NIH-3T3/GFP+ cells, were evaluated.
研究领域:
生物化学
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生物技术
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药学
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分子生物学
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高分子科学
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纳米技术
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基因工程
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DOI
高影响因子
ADVANCED MATERIALS
·
2025
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IF 26.8
Shengjie Cui,Xiaowei Wu,Xiaotong Yu,Yiqian Huang,Daixing Zhang,Haotian Chen,Boon Chin Heng,Qing Cai,Yixiang Wang,Yan Gu,Xuliang Deng
Targeted siRNA delivery has been widely used to regulate cell function. However, the rapid degradation of siRNA within macrophages upon delivery severely limits its utility for regulating macrophage function. Here, a novel technique is developed to compact large amounts of siAkt2 strands into delivery nanoparticles, to achieve massive and sustained intracellular release of siAkt2 that overwhelms the degradation capacity of macrophages. Microspheres of RNA complexes are prepared by rolling circle transcription. For better deliverability, siAkt2 microspheres are compacted by cholesterol-modified DNA, and encapsulated by Poly-(L-lactic acid) (PLLA). These PLLA-encapsulated siAkt2-compacted nanoparticles (siAkt2 RNP@PLLA NPs), each containing multiple repeated siAkt2 sequences, displayed long-term stability and maintenance of integrity within body fluids and acidic environments. Extensive endocytosis by RAW 264.7 is followed by continuous massive siAkt2 release into the cytosol, which significantly increased Akt2 gene silencing, metabolic reprogramming, as well as enhanced macrophage alternative polarization to the pro-regenerative M2 phenotype. Local administration of siAkt2 RNP@PLLA NPs in bone defects caused by periodontitis markedly induced macrophage alternative M2 polarization and enhanced bone regeneration. Therefore, the study provides a novel and highly efficient siRNA delivery system for regulating macrophage function, which can be a promising therapeutic strategy for enhancing tissue regeneration.
研究领域:
纳米医学
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免疫治疗
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组织工程
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基因递送
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再生医学
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PubMed
高影响因子
JOURNAL OF BIOLOGICAL CHEMISTRY
·
2020
·Vol. 295
·期 19
·6425-6446
·
IF 4.238
Chengmeng Jin,Xiaobing Zhu,Hao Wu,Yuqi Wang,Xun Hu
Phosphoglycerate kinase 1 (PGK1) plays important roles in glycolysis, yet its forward reaction kinetics are unknown, and its role especially in regulating cancer cell glycolysis is unclear. Here, we developed an enzyme assay to measure the kinetic parameters of the PGK1-catalyzed forward reaction. The Km values for 1,3-bisphosphoglyceric acid (1,3-BPG, the forward reaction substrate) were 4.36 μm (yeast PGK1) and 6.86 μm (human PKG1). The Km values for 3-phosphoglycerate (3-PG, the reverse reaction substrate and a serine precursor) were 146 μm (yeast PGK1) and 186 μm (human PGK1). The Vmax of the forward reaction was about 3.5- and 5.8-fold higher than that of the reverse reaction for the human and yeast enzymes, respectively. Consistently, the intracellular steady-state concentrations of 3-PG were between 180 and 550 μm in cancer cells, providing a basis for glycolysis to shuttle 3-PG to the serine synthesis pathway. Using siRNA-mediated PGK1-specific knockdown in five cancer cell lines derived from different tissues, along with titration of PGK1 in a cell-free glycolysis system, we found that the perturbation of PGK1 had no effect or only marginal effects on the glucose consumption and lactate generation. The PGK1 knockdown increased the concentrations of fructose 1,6-bisphosphate, dihydroxyacetone phosphate, glyceraldehyde 3-phosphate, and 1,3-BPG in nearly equal proportions, controlled by the kinetic and thermodynamic states of glycolysis. We conclude that perturbation of PGK1 in cancer cells insignificantly affects the conversion of glucose to lactate in glycolysis.
研究领域:
生物化学
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癌症生物学
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细胞代谢
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酶学
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DOI
PubMed
高影响因子
Theranostics
·
2024
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IF 12.4
Lijun Xu,Jie Zhu,Lingjun Rong,Huinan Yang,Bin Wang,Shuai Lu,Lingxiao Zhang,Fuyi Li,Shihua Yang,Zhifang Wang,Chong Li,Xiao Hu,Ruoyun Liu,Lili Zheng,Hongjian Liu,Haohao Zhang,Yanling Liu,Di Zhao,Shuiying Zhao,Lun Zhang,Yingbo Jia,Shiyu Liang,Zhikang Guo,Xixiu Xie,Ruitian Liu,Lixia Zhang
Rationale: NLRP3 inflammasome is critical in the development and progression of many metabolic diseases driven by chronic inflammation, but its effect on the pathology of postmenopausal osteoporosis (PMOP) remains poorly understood. Methods: We here firstly examined the levels of NLRP3 inflammasome in PMOP patients by ELISA. Then we investigated the possible mechanisms underlying the effect of NLRP3 inflammasome on PMOP by RNA sequencing of osteoblasts treated with NLRP3 siRNA and qPCR. Lastly, we accessed the effect of decreased NLRP3 levels on ovariectomized (OVX) rats. To specifically deliver NLRP3 siRNA to osteoblasts, we constructed NLRP3 siRNA wrapping osteoblast-specific aptamer (CH6)-functionalized lipid nanoparticles (termed as CH6-LNPs-siNLRP3). Results: We found that the levels of NLRP3 inflammasome were significantly increased in patients with PMOP, and were negatively correlated with estradiol levels. NLRP3 knock-down influenced signal pathways including immune system process, interferon signal pathway. Notably, of the top ten up-regulated genes in NLRP3-reduced osteoblasts, nine genes (except Mx2) were enriched in immune system process, and five genes were related to interferon signal pathway. The in vitro results showed that CH6-LNPs-siNLRP3 was relatively uniform with a dimeter of 96.64 ± 16.83 nm and zeta potential of 38.37 ± 1.86 mV. CH6-LNPs-siNLRP3 did not show obvious cytotoxicity and selectively delivered siRNA to bone tissue. Moreover, CH6-LNPs-siNLRP3 stimulated osteoblast differentiation by activating ALP and enhancing osteoblast matrix mineralization. When administrated to OVX rats, CH6-LNPs-siNLRP3 promoted bone formation and bone mass, improved bone microarchitecture and mechanical properties by decreasing the levels of NLRP3, IL-1β and IL-18 and increasing the levels of OCN and Runx2. Conclusion: NLRP3 inflammasome may be a new biomarker for PMOP diagnosis and plays a key role in the pathology of PMOP. CH6-LNPs-siNLRP3 has potential application for the treatment of PMOP.
研究领域:
生物学
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医学
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药理学
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生物技术
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DOI
PubMed
高影响因子
Acta Biomaterialia
·
2022
·
IF 10.633
Mengying Hou,Xuejie Wu,Ziyin Zhao,Qiurong Deng,Yongbing Chen,Lichen Yin
Neutrophils serve as a key contributor to the pathophysiology of myocardial ischemia reperfusion injury (MIRI), because the unregulated activation and infiltration of neutrophils lead to overwhelming inflammation in the myocardium to cause tissue damage. Herein, endothelial cell-targeting and reactive oxygen species (ROS)-ultrasensitive nanocomplexes (NCs) were developed to mediate efficient co-delivery of VCAM-1 siRNA (siVCAM-1) and dexamethasone (DXM), which cooperatively inhibited neutrophil recruitment by impeding neutrophil migration and adhesion. RPPT was first synthesized via crosslinking of PEI 600 with ditellurium followed by modification with PEG and the endothelial cell-targeting peptide cRGD. RPPT was allowed to envelope the DXM-loaded PLGA nanoparticles and condense the siVCAM-1. After systemic administration in rats experiencing MIRI, the cRGD-modified NCs efficiently targeted and entered the inflamed endothelial cells, wherein RPPT was sensitively degraded by over-produced ROS to trigger intracellular siVCAM-1 release and potentiate the VCAM-1 silencing efficiency. As a consequence of the complementary function of DXM and siVCAM-1, the NCs notably mitigated neutrophil infiltration into ischemic myocardium, provoking potent anti-inflammatory efficacy to reduce MIRI and recover cardiac function. The present study offers an effective approach for the controlled co-delivery of siRNA and drug cargoes, and it also highlights the importance of multi-dimensional manipulation of neutrophils in anti-inflammatory treatment. Statement of significance The unregulated activation and infiltration of neutrophils lead to overwhelming inflammation in the myocardium after myocardial ischemia reperfusion injury (MIRI). Here, endothelial cell-targeting and ROS-ultrasensitive nanocomplexes (NCs), comprised of PLGA NPs decorated with cRGD-poly(ethylene glycol) (PEG)-modified, ditellurium-crosslinked PEI (RPPT), were developed to mediate efficient co-delivery of VCAM-1 siRNA (siVCAM-1) and dexamethasone (DXM). DXM and siVCAM-1 with complementary functions inhibited both the migration and adhesion of neutrophils, efficiently interventing the neutrophil recruitment and interrupting the self-amplified inflammation cascade in the injured myocardium. The molecular design of RPPT renders an effective example for constructing polymeric materials with high ROS sensitivity, and it resolves the critical dilemma related to polycation-mediated siRNA delivery, such as siRNA encapsulation versus release, and transfection efficiency versus toxicity.
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PubMed
高影响因子
BIOORGANIC CHEMISTRY
·
2021
·
IF 5.275
Jin-Yu Liu,Xu-Ying Liu,Rui Liu,Fang Tang,Jing-Bo Yang,Quan Tang,Zhong-Lin Lu,Hai-Jun Qiao,Lan He
Two-photon fluorescent Acenaphtho[1,2- b ]quinoxaline (ANQ) and the hydrophilic di-(triazole-[12]aneN 3 ) moieties were combined through an alkyl chain ( ANQ-A-M ) or a β -hairpin motif with two aromatic γ -amino acid residues ( ANQ-H-M ) to explore their capabilities for in vitro and in vivo gene delivery and tracing. ANQ-A-M and ANQ-H-M showed the same maximum absorption at 420 nm, and their fluorescent intensities around 650 nm were varied in different solvents and became poor in the protic solvents. Gel electrophoresis assays indicated that both compounds completely retarded the migration of pDNA at 20 μM in the presence of DOPE . However, the DNA condensation with ANQ-H-M was not reversible, and the particle size of the corresponding complexes were larger indicated from the SEM and DLS measurements. In vitro transfections indicated ANQ-A-M /DOPE achieved Luciferase and GFP expressions were to be 7.9- and 5.7-fold of those by Lipo2000 in A549 cells respectively. However, ANQ-H-M showed very poor transfection efficiency in Luciferase expression. With the help of single/two-photon fluorescence imaging it clearly demonstrated that the successful transfection of ANQ-A-M was attributed to its cellular uptake, apparent lysosomal escape, and reversible release of DNA; and the poor transfection of ANQ-H-M was resulted from the aggregation of the DNA complexes which prevented them from the cellular uptake, and also the strong binding ability which is not easy to release DNA. ANQ-A-M /DOPE also exhibited robust gene silencing (83% knockdown of Luciferase) and GFP expression (2.47-fold higher) efficiency compared with Lipo2000 in A549 and zebrafish, respectively. The work demonstrated that the linkage structure between fluorescent and di(triazole-[12]aneN 3 ) played the important role for their gene delivery performance, and that ANQ-A-M represents a vector with the strong transfection efficiency in vitro and in vivo as well as the efficient real time bioimaging properties, which is potential for the development in biomedical research.
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-18
·
IF 10.6
Wu Cheng,Yan Jing,Ge Chenglong,Xie Lucheng,He Yunjie,Zhao Ziyin,Deng Yekun,Dong Qirong,Yin Lichen
The fracture healing outcome is largely dependent on the quantities as well as osteogenic differentiation capacities of mesenchymal stem cells (MSCs) at the lesion site. Herein, macrophage membrane (MM)-reversibly cloaked nanocomplexes (NCs) are engineered for the lesion-targeted and hierarchical co-delivery of short stromal derived factor-1α peptide (sSDF-1α) and Ckip-1 small interfering RNA (Ckip-1 siRNA, siCkip-1) to promote bone repair by concurrently fostering recruitment and osteogenic differentiation of endogenous MSCs. To construct the NCs, a membrane-penetrating α-helical polypeptide first assembles with siCkip-1, and the cationic NCs are sequentially coated with catalase and an outer shell of sSDF-1α-anchored MM. Due to MM-assisted inflammation homing, intravenously injected NCs could efficiently accumulate at the fractured femur, where catalase decomposes the local hydrogen peroxide to generate oxygen bubbles that drives the shedding of sSDF-1α-anchored MM in the extracellular compartment. The exposed, cationic inner core thus enables robust trans-membrane delivery into MSCs to induce Ckip-1 silencing. Consequently, sSDF-1α-guided MSCs recruitment cooperates with siCkip-1-mediated osteogenic differentiation to facilitate bone formation and accelerate bone fracture healing. This study provides an enlightened strategy for the hierarchical co-delivery of macromolecular drugs into different cellular compartments, and it also renders a promising modality for the management of fracture healing.
研究领域:
纳米技术
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再生医学
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生物材料
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干细胞生物学
·
药学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）