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Zhong D, Hou X, Pan D, Li Z, Gong Q, Luo K. Bioorthogonal In Situ Polymerization of Dendritic Agents for Hijacking Lysosomes and Enhancing Antigen Presentation in Cancer Cells. Adv Mater 2024:e2403588. [PMID: 38490170 DOI: 10.1002/adma.202403588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 03/13/2024] [Indexed: 03/17/2024]
Abstract
A low-generation lysine dendrimer, SPr-G2, responds to intracellular glutathione to initiate bioorthogonal in situ polymerization, resulting in the formation of large assemblies in mouse breast cancer cells. The intracellular large assemblies of SPr-G2 can interact with lysosomes to induce lysosome expansion and enhance lysosomal membrane permeabilization, leading to major histocompatibility complex class I upregulation on tumor cell surfaces and ultimately tumor cell death. Moreover, the use of the SPr-G2 dendrimer to conjugate the chemotherapeutic drug, camptothecin (CPT), can boost the therapeutic potency of CPT. Excellent antitumor effects in vitro and in vivo are obtained from the combinational treatment of the SPr-G2 dendrimer and CPT. This combinational effect also enhances antitumor immunity through promoting activation of cytotoxic T cells in tumor tissues and maturation of dendritic cells. This study can shed new light on the development of peptide dendritic agents for cancer therapy.
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Affiliation(s)
- Dan Zhong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xingyu Hou
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhiqian Li
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, 361000, China
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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2
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Hou X, Pan D, Zhong D, Gong Q, Luo K. Dendronized Polymer-Derived Nanomedicines for Mitochondrial Dynamics Regulation and Immune Modulation. Adv Mater 2024:e2400582. [PMID: 38477381 DOI: 10.1002/adma.202400582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/29/2024] [Indexed: 03/14/2024]
Abstract
The effects of dendron side chains in polymeric conjugates on tumor penetration and antigen presentation are systematically examined. Three polymer-gemcitabine (Gem) conjugates (pG0-Gem, pG1-Gem, pG2-Gem) are designed and prepared. The pG2-Gem conjugate uniquely binds to the mitochondria of tumor cells, thus regulating mitochondrial dynamics. The interaction between the pG2-Gem conjugate and the mitochondria promotes great penetration and accumulation of the conjugate at the tumor site, resulting in pronounced antitumor effects in an animal model. Such encouraging therapeutic effects can be ascribed to immune modulation since MHC-1 antigen presentation is significantly enhanced due to mitochondrial fusion and mitochondrial metabolism alteration after pG2-Gem treatment. Crucially, the drug-free dendronized polymer, pG2, is identified to regulate mitochondrial dynamics, and the regulation is independent of the conjugated Gem. Furthermore, the combination of pG2-Gem with anti-PD-1 antibody results in a remarkable tumor clearance rate of 87.5% and a prolonged survival rate of over 150 days, demonstrating the potential of dendronized polymers as an innovative nanoplatform for metabolic modulation and synergistic tumor immunotherapy.
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Affiliation(s)
- Xingyu Hou
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dan Zhong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, 361000, China
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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3
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Zhang Y, Fang Z, Pan D, Li Y, Zhou J, Chen H, Li Z, Zhu M, Li C, Qin L, Ren X, Gong Q, Luo K. Dendritic Polymer-Based Nanomedicines Remodel the Tumor Stroma: Improve Drug Penetration and Enhance Antitumor Immune Response. Adv Mater 2024:e2401304. [PMID: 38469918 DOI: 10.1002/adma.202401304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/09/2024] [Indexed: 03/13/2024]
Abstract
The dense extracellular matrix (ECM) in solid tumors, contributed by cancer-associated fibroblasts (CAFs), hinders penetration of drugs and diminishes their therapeutic outcomes. A sequential treatment strategy of remodeling the ECM via a CAF modifier (dasatinib, DAS) is proposed to promote penetration of an immunogenic cell death (ICD) inducer (epirubicin, Epi) via apoptotic vesicles, ultimately enhancing the treatment efficacy against breast cancer. Dendritic poly(oligo(ethylene glycol) methyl ether methacrylate) (POEGMA)-based nanomedicines (poly[OEGMA-Dendron(G2)-Gly-Phe-Leu-Gly-DAS] (P-DAS) and poly[OEGMA-Dendron(G2)-hydrazone-Epi] (P-Epi)) are developed for sequential delivery of DAS and Epi, respectively. P-DAS reprograms CAFs to reduce collagen by downregulating collagen anabolism and energy metabolism, thereby reducing the ECM deposition. The regulated ECM can enhance tumor penetration of P-Epi to strengthen its ICD effect, leading to an amplified antitumor immune response. In breast cancer-bearing mice, this approach alleviates the ECM barrier, resulting in reduced tumor burden and increased cytotoxic T lymphocyte infiltration, and more encouragingly, synergizes effectively with anti-programmed cell death 1 (PD-1) therapy, significantly inhibiting tumor growth and preventing lung metastasis. Furthermore, systemic toxicity is barely detectable after sequential treatment with P-DAS and P-Epi. This approach opens a new avenue for treating desmoplastic tumors by metabolically targeting CAFs to overcome the ECM barrier.
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Affiliation(s)
- Yuxin Zhang
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zaixiang Fang
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yunkun Li
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jie Zhou
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hongying Chen
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhiqian Li
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Mengli Zhu
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Cong Li
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Liwen Qin
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiangyi Ren
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, 361021, China
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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Shen X, Pan D, Gong Q, Gu Z, Luo K. Enhancing drug penetration in solid tumors via nanomedicine: Evaluation models, strategies and perspectives. Bioact Mater 2024; 32:445-472. [PMID: 37965242 PMCID: PMC10641097 DOI: 10.1016/j.bioactmat.2023.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 11/16/2023] Open
Abstract
Effective tumor treatment depends on optimizing drug penetration and accumulation in tumor tissue while minimizing systemic toxicity. Nanomedicine has emerged as a key solution that addresses the rapid clearance of free drugs, but achieving deep drug penetration into solid tumors remains elusive. This review discusses various strategies to enhance drug penetration, including manipulation of the tumor microenvironment, exploitation of both external and internal stimuli, pioneering nanocarrier surface engineering, and development of innovative tactics for active tumor penetration. One outstanding strategy is organelle-affinitive transfer, which exploits the unique properties of specific tumor cell organelles and heralds a potentially transformative approach to active transcellular transfer for deep tumor penetration. Rigorous models are essential to evaluate the efficacy of these strategies. The patient-derived xenograft (PDX) model is gaining traction as a bridge between laboratory discovery and clinical application. However, the journey from bench to bedside for nanomedicines is fraught with challenges. Future efforts should prioritize deepening our understanding of nanoparticle-tumor interactions, re-evaluating the EPR effect, and exploring novel nanoparticle transport mechanisms.
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Affiliation(s)
- Xiaoding Shen
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, 361021, China
| | - Zhongwei Gu
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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5
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Wilson NM, Calabria C, Warren A, Finlay A, O'Donovan A, Passerello GL, Ribaric NL, Ward P, Gillespie R, Farrel R, McNarry AF, Pan D. Quantifying hospital environmental ventilation using carbon dioxide monitoring - a multicentre study. Anaesthesia 2024; 79:147-155. [PMID: 38059394 DOI: 10.1111/anae.16124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2023] [Indexed: 12/08/2023]
Abstract
The COVID-19 pandemic has highlighted the importance of environmental ventilation in reducing airborne pathogen transmission. Carbon dioxide monitoring is recommended in the community to ensure adequate ventilation. Dynamic measurements of ventilation quantifying human exhaled waste gas accumulation are not conducted routinely in hospitals. Instead, environmental ventilation is allocated using static hourly air change rates. These vary according to the degree of perceived hazard, with the highest change rates reserved for locations where aerosol-generating procedures are performed, where medical/anaesthetic gases are used and where a small number of high-risk infective or immunocompromised patients may be isolated to reduce cross-infection. We aimed to quantify the quality and distribution of ventilation in hospital by measuring carbon dioxide levels in a two-phased prospective observational study. First, under controlled conditions, we validated our method and the relationship between human occupancy, ventilation and carbon dioxide levels using non-dispersive infrared carbon dioxide monitors. We then assessed ventilation quality in patient-occupied (clinical) and staff break and office (non-clinical) areas across two hospitals in Scotland. We selected acute medical and respiratory wards in which patients with COVID-19 are cared for routinely, as well as ICUs and operating theatres where aerosol-generating procedures are performed routinely. Between November and December 2022, 127,680 carbon dioxide measurements were obtained across 32 areas over 8 weeks. Carbon dioxide levels breached the 800 ppm threshold for 14% of the time in non-clinical areas vs. 7% in clinical areas (p < 0.001). In non-clinical areas, carbon dioxide levels were > 800 ppm for 20% of the time in both ICUs and wards, vs. 1% in operating theatres (p < 0.001). In clinical areas, carbon dioxide was > 800 ppm for 16% of the time in wards, vs. 0% in ICUs and operating theatres (p < 0.001). We conclude that staff break, office and clinical areas on acute medical and respiratory wards frequently had inadequate ventilation, potentially increasing the risks of airborne pathogen transmission to staff and patients. Conversely, ventilation was consistently high in the ICU and operating theatre clinical environments. Carbon dioxide monitoring could be used to measure and guide improvements in hospital ventilation.
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Affiliation(s)
- N M Wilson
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
- Usher Institute, University of Edinburgh, Edinburgh, UK
| | - C Calabria
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - A Warren
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - A Finlay
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - A O'Donovan
- Department of Process, Energy and Transport Engineering, MeSSO Research Group, Munster Technological University, Cork, Ireland
| | - G L Passerello
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - N L Ribaric
- Faculty of Medicine, University Medical Centre Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
| | - P Ward
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - R Gillespie
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - R Farrel
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - A F McNarry
- Department of Anaesthesia, Western General Hospital, UK
| | - D Pan
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
- Department of Infectious Diseases and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
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Chang C, Zong M, Teng Y, Zeng X, Guo Y, Pan D, Zhang T, Wu Z. Preparation and characterisation of novel casein-gum Arabic composite microcapsules for targeted in vivo delivery of Lactiplantibacillus plantarum A3. Benef Microbes 2024; 15:51-66. [PMID: 38350470 DOI: 10.1163/18762891-20230065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/08/2023] [Indexed: 02/15/2024]
Abstract
The health benefits of probiotics in the body are predicated on their ability to remain viable in harsh gastrointestinal conditions and complex pathological microenvironments. Casein and gum Arabic (GA), with dual emulsifying and stabilising effects in colloidal systems. Therefore, the objective of this research was to develop a novel microcapsule to encapsulate Lactiplantibacillus plantarum A3 using casein and GA as wall materials to improve the survival of the bacteria during gastrointestinal digestion, storage and lyophilization. The casein and GA composite microcapsules were prepared and characterised by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that the microcapsules had stable morphology, uniform size and spherical shape. The results revealed that the encapsulation of microcapsules significantly improved the survival of L. plantarum A3 in gastrointestinal fluid environment (5.52 × 109 cfu/ml) and lyophilization treatment (6.25 × 109 cfu/ml). Furthermore, the microencapsulated L. plantarum A3 exhibited an improved ability to regulate intestinal microbiota by effectively increasing the relative abundance of Bacteroidetes, Proteobacteria and Actinobacteria and decreasing the relative abundance of Firmicutes in vivo. The findings of the study will help to design a lactic acid bacteria encapsulation system based on the gastrointestinal environment and provide a basis for the development of probiotic functional products.
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Affiliation(s)
- C Chang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - M Zong
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Y Teng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - X Zeng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Y Guo
- College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - D Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - T Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Z Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
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7
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Zheng X, Song X, Zhu G, Pan D, Li H, Hu J, Xiao K, Gong Q, Gu Z, Luo K, Li W. Nanomedicine Combats Drug Resistance in Lung Cancer. Adv Mater 2024; 36:e2308977. [PMID: 37968865 DOI: 10.1002/adma.202308977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/03/2023] [Indexed: 11/17/2023]
Abstract
Lung cancer is the second most prevalent cancer and the leading cause of cancer-related death worldwide. Surgery, chemotherapy, molecular targeted therapy, immunotherapy, and radiotherapy are currently available as treatment methods. However, drug resistance is a significant factor in the failure of lung cancer treatments. Novel therapeutics have been exploited to address complicated resistance mechanisms of lung cancer and the advancement of nanomedicine is extremely promising in terms of overcoming drug resistance. Nanomedicine equipped with multifunctional and tunable physiochemical properties in alignment with tumor genetic profiles can achieve precise, safe, and effective treatment while minimizing or eradicating drug resistance in cancer. Here, this work reviews the discovered resistance mechanisms for lung cancer chemotherapy, molecular targeted therapy, immunotherapy, and radiotherapy, and outlines novel strategies for the development of nanomedicine against drug resistance. This work focuses on engineering design, customized delivery, current challenges, and clinical translation of nanomedicine in the application of resistant lung cancer.
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Affiliation(s)
- Xiuli Zheng
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Xiaohai Song
- Department of General Surgery, Gastric Cancer Center and Laboratory of Gastric Cancer, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Guonian Zhu
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Haonan Li
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Jiankun Hu
- Department of General Surgery, Gastric Cancer Center and Laboratory of Gastric Cancer, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Kai Xiao
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, 361000, China
| | - Zhongwei Gu
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Kui Luo
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Weimin Li
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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8
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Del Palacio A, Corallo B, Simoens M, Cea J, de Aurrecoechea I, Martinez I, Sanchez A, Stewart S, Pan D. Major Fusarium species and mycotoxins associated with freshly harvested maize grain in Uruguay. Mycotoxin Res 2023; 39:379-391. [PMID: 37442904 DOI: 10.1007/s12550-023-00498-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/22/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023]
Abstract
Fusarium species are common fungal pathogens of maize. Fusarium graminearum and Fusarium verticillioides, among others, can cause maize ear rot, and they are also mycotoxin producers. The aims of this work were to determine the frequency and diversity of Fusarium species in Uruguayan maize kernels, evaluate the toxigenic potential of the isolates, determine toxin contamination levels on freshly harvested grain, and assess the sensitivity of main Fusarium species against fungicides. Fusarium verticillioides was the most frequent species isolated, followed by Fusarium graminearum sensu stricto. Of F. verticillioides isolates studied for fumonisin production, 72% produced fumonisin B1 and 32% fumonisin B2. Considering in vitro toxin production by F. graminearum sensu stricto isolates, deoxynivalenol was the main toxin produced, followed by zearalenone and nivalenol. Fumonisins were the most frequently found toxins on freshly harvested maize samples (98% in 2018 and 86% in 2019), and also, fumonisin B1 was the toxin with highest concentration in both years studied (4860 µg/kg in 2018 and 1453 µg/kg in 2019). Deoxynivalenol and zearalenone were also found as contaminants. Metconazole and epoxiconazole were the most effective fungicides tested on F. verticillioides isolates. Fusarium graminearum sensu stricto isolates also were more sensitive to metconazole compared to other fungicides; nevertheless, epoxiconazole was less efficient in controlling this species. This is the first study that reports Fusarium species and mycotoxin contamination levels associated with maize grain in Uruguay. Its detection is the main step to develop management strategies in order to minimize fungal infection in maize crops.
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Affiliation(s)
- A Del Palacio
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay
| | - B Corallo
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay
| | - M Simoens
- Departamento de Análisis de Productos Agropecuarios, Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - Jacqueline Cea
- Departamento de Análisis de Productos Agropecuarios, Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - I de Aurrecoechea
- Departamento de Granos, Ministerio de Ganadería, Dirección General de Servicios Agrícolas, Agricultura y Pesca, Montevideo, Uruguay
| | - I Martinez
- Fundación del Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - A Sanchez
- Fundación del Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - S Stewart
- Programa Cultivos de Secano, Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Colonia, Uruguay
| | - D Pan
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay.
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Pan D, Yang SS, Meng FY, Mao P, Huang MK, Mu HM. [Multimodal imaging features of acute macular retinopathy in patients with COVID-19]. Zhonghua Yan Ke Za Zhi 2023; 59:557-565. [PMID: 37408427 DOI: 10.3760/cma.j.cn112142-20230109-00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Objective: To investigate the multimodal imaging characteristics of acute macular retinopathy (AMR) and/or parafoveal acute middle maculopathy (PAMM) in patients with coronavirus disease 2019 (COVID-19). Methods: It was a cross-sectional study. Eight patients (15 eyes) diagnosed with AMN and/or PAMM, who presented for their initial visit at Kaifeng Eye Hospital between December 17 and December 31, 2022 and were also confirmed positive for COVID-19, were enrolled as the observation group. The patients were classified into four types based on swept-source optical coherence tomography (SS-OCT) findings. Fifteen healthy volunteers (15 eyes) without ocular or systemic diseases were recruited as the healthy control group, and one eye was randomly selected for analysis. All participants underwent detailed ophthalmic examinations, including best-corrected visual acuity (BCVA), slit-lamp biomicroscopy, fundus photography (FP), intraocular pressure measurement, fundus infrared imaging, OCT and OCT angiography (OCTA). The foveal avascular zone (FAZ) area of the macular center was measured. General information and multimodal imaging findings were collected and analyzed. The superficial capillary plexus vessel density (SCP-VD) and deep capillary plexus vessel density (DCP-VD) were measured in circular areas with diameters of 1.0 mm, >1.0 mm and ≤3.0 mm, and>3.0 mm and ≤6.0 mm centered on the foveal center, recorded as SCP-VD1.0, 3.0, 6.0 and DCP-VD1.0, 3.0, 6.0. Statistical analyses were performed using t-tests, Mann-Whitney U tests, and chi-square tests. Results: The observation group consisted of 6 males (11 eyes) and 2 females (4 eyes) with a mean age of (26.87±11.56) years. The healthy control group included 11 males (11 eyes) and 4 females (4 eyes) with a mean age of (28.75±12.30) years. There were no statistically significant differences in age and gender distribution between the two groups (all P>0.05). All patients in the observation group experienced high fever (≥39.0 ℃) and developed ocular symptoms during the febrile period or within 24 hours after fever resolution. Among all patients, there were 5 cases (7 eyes) of Type Ⅰ, 1 case (1 eye) of Type Ⅱ, 3 cases (4 eyes) of Type Ⅲ, and 2 cases (3 eyes) of Type Ⅳ. In Type Ⅲ and Ⅳ, 3 cases (4 eyes) exhibited weakly reflective cystic spaces in the outer plexiform or outer nuclear layers, and fundus photography revealed multiple gray or reddish-brown lesions in the macular region. One case (1 eye) showed retinal superficial hemorrhage. Cotton wool spots were observed in 2 cases (4 eyes). Fundus infrared imaging showed that Type Ⅰ manifested as weak reflectivity lesions in the parafoveal central zone, with the tip pointing towards the fovea. Type Ⅱ showed no apparent abnormalities in the macular region, while Type Ⅲ and Ⅳ displayed map-like weak reflective lesions spanning the foveal center. OCTA findings demonstrated that SCP-VD1.0 in the observation group was 6.93% (4.77%, 6.93%), significantly lower than the healthy control group's 10.66% (8.05%, 10.55%) (U=174.00, P=0.016). SCP-VD3.0 in the observation group was 37.14% (32.15%, 43.48%), also lower than the healthy control group's 43.06% (38.95%, 46.55%) (U=174.00, P=0.016). DCP-VD3.0 in the observation group was 48.20% (46.11%, 50.33%), lower than the healthy control group's 51.10% (50.04%, 53.02%) (U=188.00, P=0.009). DCP-VD6.0 in the observation group was 49.27% (47.26%, 51.67%), lower than the healthy control group's 52.43% (50.07%, 53.82%) (U=70.00, P=0.004). There were no significant differences in SCP-VD6.0 and DCP-VD1.0 between the two groups (both P>0.05). Conclusions: Acute macular retinopathy in patients with COVID-19 can involve all retinal layers and present as segmental hyper-reflectivity on SS-OCT. Fundus infrared imaging reveals weak reflectivity in the affected area, fundus photography shows multiple gray or reddish-brown lesions in the macular region, and OCTA demonstrates a decrease in SCP-VD and DCP-VD.
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Affiliation(s)
- D Pan
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - S S Yang
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - F Y Meng
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - P Mao
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - M K Huang
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - H M Mu
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
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10
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Ding H, Liu S, Du W, Su L, Chen J, Tian Y, Pan D, Chen L, Rizzello L, Zheng X, Battaglia G, Luo K, Gong Q, Tian X. Revealing the amyloid β-protein with zinc finger protein of micronucleus during Alzheimer's disease progress by a quaternary ammonium terpyridine probe. Biosens Bioelectron 2023; 236:115446. [PMID: 37290288 DOI: 10.1016/j.bios.2023.115446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Micronucleus (MN) is regarded as an abnormal structure in eukaryotic cells which can be used as a biomarker for genetic instability. However, direct observation of MN in living cells is rarely achieved due to the lack of probes that are capable of distinguishing nuclear- and MN-DNA. Herein, a water-soluble terpyridine organic small molecule (ABT) was designed and employed to recognize Zinc-finger protein (ZF) for imaging intracellular MN. The in vitro experiments suggested ABT has a high affinity towards ZF. Further live cell staining showed that ABT could selectively target MN in HeLa and NSC34 cells when combined with ZF. Importantly, we use ABT to uncover the correlation between neurotoxic amyloid β-protein (Aβ) and MN during Alzheimer's disease (AD) progression. Thus, this study provides profound insight into the relationship between Aβ and genomic disorders, offering a deeper understanding for the diagnosis and treatment of AD.
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Affiliation(s)
- Haitao Ding
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Shangke Liu
- Department of Dermatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Wei Du
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Liping Su
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Junyang Chen
- Department of Chemistry, University College London, London, United Kingdom
| | - Yupeng Tian
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Hefei, 230039, China
| | - Dayi Pan
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Lei Chen
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Hefei, 230039, China.
| | - Loris Rizzello
- Department of Pharmaceutical Sciences - University of Milan, Via G. Balzaretti 9, 20133, Milan, IT, Italy; The National Institute of Molecular Genetics (INGM), Via Francesco Sforza 35, 20122, Milan, IT, Italy
| | - Xiaowei Zheng
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Giuseppe Battaglia
- Department of Chemistry, University College London, London, United Kingdom
| | - Kui Luo
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, And Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, And Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China; Department of Radiology, West China Xiamen Hospital of Sichuan University, 699 Jinyuan Xi Road, Jimei District, 361021, Xiamen, Fujian, China
| | - Xiaohe Tian
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China.
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11
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Li X, Duan Z, Chen X, Pan D, Luo Q, Gu L, Xu G, Li Y, Zhang H, Gong Q, Chen R, Gu Z, Luo K. Impairing Tumor Metabolic Plasticity via a Stable Metal-Phenolic-Based Polymeric Nanomedicine to Suppress Colorectal Cancer. Adv Mater 2023; 35:e2300548. [PMID: 36917817 DOI: 10.1002/adma.202300548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/08/2023] [Indexed: 06/09/2023]
Abstract
Targeting metabolic vulnerability of tumor cells is a promising anticancer strategy. However, the therapeutic efficacy of existing metabolism-regulating agents is often compromised due to tolerance resulting from tumor metabolic plasticity, as well as their poor bioavailability and tumor-targetability. Inspired by the inhibitive effect of N-ethylmaleimide on the mitochondrial function, a dendronized-polymer-functionalized metal-phenolic nanomedicine (pOEG-b-D-SH@NP) encapsulating maleimide-modified doxorubicin (Mal-DOX) is developed to enable improvement in the overall delivery efficiency and inhibition of the tumor metabolism via multiple pathways. It is observed that Mal-DOX and its derived nanomedicine induces energy depletion of CT26 colorectal cancer cells more efficiently than doxorubicin, and shifts the balance of programmed cell death from apoptosis toward necroptosis. Notably, pOEG-b-D-SH@NP simultaneously inhibits cellular oxidative phosphorylation and glycolysis, thus potently suppressing cancer growth and peritoneal intestinal metastasis in mouse models. Overall, the study provides a promising dendronized-polymer-derived nanoplatform for the treatment of cancers through impairing metabolic plasticity.
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Affiliation(s)
- Xiaoling Li
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhenyu Duan
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiaoting Chen
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiang Luo
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lei Gu
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Gang Xu
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Yinggang Li
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, 361000, China
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Animal Experimental Center, Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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12
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Fang Z, Lin L, Li Z, Gu L, Pan D, Li Y, Chen J, Ding H, Tian X, Gong Q, Luo K. Stimuli-responsive heparin-drug conjugates co-assembled into stable nanomedicines for cancer therapy. Acta Biomater 2023; 164:422-434. [PMID: 37088159 DOI: 10.1016/j.actbio.2023.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/29/2023] [Accepted: 04/13/2023] [Indexed: 04/25/2023]
Abstract
The combination of chemotherapy and photodynamic therapy (PDT) has the potential to complement single-drug therapies, but chemotherapeutic agents and photosensitizers often have compromised therapeutic efficacies and strong toxic effects. In this study, we exploited nanotechnology to address this challenge by utilizing heparin as a carrier for co-delivery of chemotherapeutic drugs and photosensitizers for synergistic cancer therapy. Specifically, heparin-paclitaxel (HP-PTX) and heparin-pyropheophorbide-a (HP-Ppa) were synthesized by attaching paclitaxel (PTX), a small molecular chemotherapeutic drug, through a reactive oxygen species (ROS)-responsive linker and Ppa, a photosensitizer, to heparin, respectively. Two conjugates co-assembled into a nanomedicine, HP-PP nanoparticles (NPs), for controllable co-delivery of Ppa and PTX into tumor cells. HP-PP NPs significantly enhanced the in vitro stability of HP-Ppa and the photostability of Ppa, and the synergistic actions of chemotherapy and PDT were confirmed from both in vitro and in vivo antitumor studies. Notably, HP-PP NPs enhanced tumor accumulation of Ppa up to 11-fold and the treatment of 4T1 tumor-bearing mice with HP-PP NPs resulted in a tumor growth inhibition of 98.1% without systemic toxicity. The strategy of co-assembly of heparin conjugates may offer great potential in enhancing the efficacy of combination therapy. STATEMENT OF SIGNIFICANCE: : We proposed a nano-delivery system, HP-PP NPs, which was constructed by co-assembly of heparin-paclitaxel (HP-PTX) and heparin-pyropheophorbide-a (HP-Ppa), to co-deliver PTX and Ppa for synergistic cancer therapy. HP-PP NPs enhanced the photostability and the in vitro stability of Ppa and HP-Ppa, and induced greater cytotoxicity than HP-PTX NPs or HP-Ppa NPs. This co-delivery system displays enhanced tumor accumulation and has a remarkable synergistic antitumor effect with a tumor growth inhibition of 98.1%.
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Affiliation(s)
- Zaixiang Fang
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Ling Lin
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Lei Gu
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China.
| | - Yunkun Li
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Jie Chen
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Haitao Ding
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Xiaohe Tian
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China; Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, 361021, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Clinical Research Center for Breast, Department of Radiology, Department of Breast Surgery, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital Sichuan University, Chengdu 610041, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China.
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13
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Zhang Y, Zhou J, Chen X, Li Z, Gu L, Pan D, Zheng X, Zhang Q, Chen R, Zhang H, Gong Q, Gu Z, Luo K. Modulating tumor-stromal crosstalk via a redox-responsive nanomedicine for combination tumor therapy. J Control Release 2023; 356:525-541. [PMID: 36918084 DOI: 10.1016/j.jconrel.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/12/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023]
Abstract
Interaction between carcinoma-associated fibroblasts (CAFs) and tumor cells leads to the invasion and metastasis of breast cancer. Herein, we prepared a redox-responsive chondroitin sulfate (CS)-based nanomedicine, in which hydrophobic cabazitaxel (CTX) was conjugated to the backbone of CS via glutathione (GSH)-sensitive dithiomaleimide (DTM) to form an amphipathic CS-DTM-CTX (CDC) conjugate, and dasatinib (DAS) co-assembled with the CDC conjugate to obtain DAS@CDC. After CD44 receptor-mediated internalization by CAFs, the nanomedicine could reverse CAFs to normal fibroblasts, blocking their crosstalk with tumor cells and reducing synthesis of major tumor extracellular matrix proteins, including collagen and fibronectin. Meanwhile, the nanomedicine internalized by tumor cells could effectively inhibit tumor proliferation and metastasis, leading to shrinkage of the tumor volume and inhibition of lung metastasis in a subcutaneous 4T1 tumor model with low side effects. Collectively, the nanomedicine showed a remarkably synergistic therapy effect against breast cancer by modulating tumor-stromal crosstalk.
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Affiliation(s)
- Yuxin Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jie Zhou
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaoting Chen
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China; Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qianfeng Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China; Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China; Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Animal Experimental Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China; Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China.
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Li Y, Duan Z, Pan D, Ren L, Gu L, Li X, Xu G, Zhu H, Zhang H, Gu Z, Chen R, Gong Q, Wu Y, Luo K. Attenuating Metabolic Competition of Tumor Cells for Favoring the Nutritional Demand of Immune Cells by a Branched Polymeric Drug Delivery System. Adv Mater 2023; 35:e2210161. [PMID: 36504170 DOI: 10.1002/adma.202210161] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Tumor cells are dominant in the nutritional competition in the tumor microenvironment, and their metabolic abnormalities often lead to microenvironmental acidosis and nutrient deprivation, thereby impairing the function of immune cells and diminishing the antitumor therapeutic effect. Herein, a branched polymeric conjugate and its efficacy in attenuating the metabolic competition of tumor cells are reported. Compared with the control nanoparticles prepared from its linear counterpart, the branched-conjugate-based nanoparticles can more efficiently accumulate in the tumor tissue and interfere with the metabolic processes of tumor cells to increase the concentration of essential nutrients and reduce the level of immunosuppressive metabolites in the TME, thus creating a favorable environment for infiltrated immune cells. Its combined treatment with an immune checkpoint inhibitor (ICI) achieves an enhanced antitumor effect. The work presents a promising approach for targeting metabolic competition in the TME to enhance the chemo-immunotherapeutic effect against cancers.
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Affiliation(s)
- Yinggang Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Zhenyu Duan
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Long Ren
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Lei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Xiaoling Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Gang Xu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, 361000, China
| | - Yao Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
- Functional and molecular imaging Key Laboratory of Sichuan Province, Key Laboratory of Transplant Engineering and Immunology, NHC, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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Zhang X, Wang X, Li Z, Du J, Xiao X, Pan D, Zhang H, Tian X, Gong Q, Gu Z, Luo K. Lactose-modified enzyme-sensitive branched polymers as a nanoscale liver cancer-targeting MRI contrast agent. Nanoscale 2023; 15:809-819. [PMID: 36533522 DOI: 10.1039/d2nr04020d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Signal enhancement of magnetic resonance imaging (MRI) in the diseased region is dependent on the molecular structure of the MRI contrast agent. In this study, a macromolecular contrast agent, Branched-LAMA-DOTA-Cy5.5-Gd (BLDCGd), was prepared to target liver cancer. Due to the affinity of lactose to the Asialoglycoprotein receptor (ASGPR) over-expressed on the surface of liver cancer cells, lactose was selected as the targeting moiety in the contrast agent. A cathepsin B-sensitive tetrapeptide, GFLG, was used as a linkage moiety to construct a cross-linked macromolecular structure of the contrast agent, and the contrast agent could be degraded into fragments for clearance. A small-molecular-weight molecule, DOTA-Gd, and a fluorescent dye, Cy5.5, were conjugated to the macromolecular structure via a thiol-ene click reaction. The contrast agent, BLDCGd, had a high molecular weight (81 kDa) and a small particle size (59 ± 12 nm). Its longitudinal relaxivity (12.62 mM-1 s-1) was 4-fold that of the clinical agent DTPA-Gd (3.42 mM-1 s-1). Signal enhancement of up to 184% was observed at the tumor site in an H22 cell-based mouse model. A high accumulation level of BLDCGd in the liver tumor observed from MRI was confirmed from the fluorescence images obtained from the same contrast agent. BLDCGd showed no toxicity to HUVECs and H22 cells in vitro, and low blood chemistry indexes and no distinct histopathological abnormalities were also observed in vivo after injection of BLDCGd since it could be metabolized through the kidneys according to the in vivo MRI results of major organs. Therefore, the branched macromolecule BLDCGd could have great potential as an efficacious and bio-safe nanoscale MRI contrast agent for clinical diagnosis of liver cancer.
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Affiliation(s)
- Xiaoqin Zhang
- School of Basic Medical Science, Southwest Medical University, Luzhou,646000, China
| | - Xiaoming Wang
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
- Department of Radiology, Chongqing General Hospital, No. 118, Xingguang Avenue, Liangjiang New Area, Chongqing, 401147, China
| | - Zhiqian Li
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Jun Du
- School of Basic Medical Science, Southwest Medical University, Luzhou,646000, China
| | - Xueyang Xiao
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute Claremont, CA 91711, USA
| | - Xiaohe Tian
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, China
| | - Zhongwei Gu
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), Department of Biotherapy, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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16
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Chao M, Chan Y, Pan D, Holt E, Tan A, McMillan K, Ho H, Pham T, Thomas J, Orio P, Cokelek M, Joon DL, Foroudi F, Bolton D. Can Perirectal Spacing Help Reduce GI Toxicity in Patients Undergoing Post-Prostatectomy Radiotherapy? Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Holt E, Chan Y, Tan A, Liu M, Ho H, Manohar P, Pan D, Cham C, McMillan K, Joon DL, Pham T, Foroudi F, Cokelek M, Bolton D, Ng M, Guerrieri M, Chao M. The Use of HA as Rectal Spacer in Prostate Cancer Patients Undergoing Hypofractionated RT: An Australian Experience. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Wang X, Zhang X, Li Z, Xiao X, Guo S, Pan D, Zhang H, Tian X, Gong Q, Gu Z, Ma X, Luo K. A hyaluronic acid-derived imaging probe for enhanced imaging and accurate staging of liver fibrosis. Carbohydr Polym 2022; 295:119870. [DOI: 10.1016/j.carbpol.2022.119870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/24/2022] [Accepted: 07/11/2022] [Indexed: 11/26/2022]
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Cui Y, Fan S, Pan D, Chao Q. [Atorvastatin inhibits malignant behaviors and induces apoptosis in human glioma cells by up-regulating miR-146a and inhibiting the PI3K/Akt signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:899-904. [PMID: 35790441 DOI: 10.12122/j.issn.1673-4254.2022.06.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the effect of atorvastatin (AVT) on biological behaviors and the miR-146a/PI3K/Akt signaling pathway in human glioma cells. METHODS Human glioma U251 cells were treated with 8.0 μmol/L AVT or transfected with a miR-146a inhibitor or a negative control fragment (miR-146a NC) prior to AVT treatment. RT-PCR was used to detect miR-146a expression in the cells, and the changes in cell proliferation rate, apoptosis, cell invasion and migration were detected using MTT assay, flow cytometry, and Transwell assay. Western blotting was performed to detect the changes in cellular expressions of proteins in the PI3K/Akt signaling pathway. RESULTS AVT treatment for 48 h resulted in significantly increased miR-146a expression and cell apoptosis (P < 0.01) and obviously lowered the cell proliferation rate, invasion index, migration index, and expressions of p-PI3K and p-Akt protein in U251 cells (P < 0.01). Compared with AVT treatment alone, transfection with miR-146a inhibitor prior to AVT treatment significantly reduced miR-146a expression and cell apoptosis (P < 0.01), increased the cell proliferation rate, promoted cell invasion and migration, and enhanced the expressions of p-PI3K and p-Akt proteins in the cells (P < 0.01); these effects were not observed following transfection with miR-146a NC group (P>0.05). CONCLUSION AVT can inhibit the proliferation, invasion and migration and promote apoptosis of human glioma cells possibly by up-regulating miR-146a expression and inhibiting the PI3K/Akt signaling pathway.
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Affiliation(s)
- Y Cui
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - S Fan
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - D Pan
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Q Chao
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
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Katayama K, Pan D, Oda M, Okubo T, Mori K. AB1335 BONE MARROW EDEMA SCORE IN HAND X-RAY FILM BY AI DEEP LEARNING ASSOCIATE WITH MRI BONE EDEMA IN RHEUMATOID ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundRapid radiographic progression (RRP) was reported to be one of clinical symptom in difficult to treat RA(D2T RA) (1). Eular recommendation for imaging showed BME is strong and independent prognostic factor for bone destruction(2). We reported bone marrow edema (BME) in MRI image was most associated with RRP compared with bone erosion, synovitis in Adalimumab add-on therapy in MTX-IR RA patients(3). To rescue RRP, early detection of BME is important although cost of MRI is expensive and hard to repeat.ObjectivesTo investigate the score of BME in hand X ray film by deep learning between X ray film and MRI BME information can discriminate the differences between BME and non-BME images.MethodsIn this work, we use a neural network consisted of convolutional layers and fully connected layers to classify X-ray images (Figure 1) In this paper, the output is the socre of BME which ranges from 0 to1(threshold = 0.4). We also used an interpretation technique called the Grad-CAM for visual explanations. Hand MRI (1.5T) were used.Figure 1.The convolutional neural network design. A red block “Conv” means a convolutional block. It contains a 2D convolution layer, a leaky relu activation function, a maxpooling layer and a batch normalization layer. The numbers above each “Conv” block are (kernal size, kernal size, kernal number). A green block “FC” is a fully connection layer. The number above it is (neuron number). After the last Softmax layer, the output becomes the probability of BME which ranges from 0 to 1.ResultsRegarding data split, 104 images including 79 non-BME images and 25 BME images are used as a hold-out test set. The rest of the images (473 images) are used as training data and validation data. Five fold cross-validation is used for these 473images. For each fold, there are about 378 images including 297 non-BME images and 81 BME images in the training set. There are about 95 images including 74 non-BME images and 21 BME images in the validation set. In order to fully utilize every image and unify the distribution of the training set and the validation set, the ratio of non-BME and BME is controlled to be the same which is about 3.66:1. The five folds showed similar performance on the hold-out test set. AUC is the area under the ROC curve. As the result, AUC which indicates the general performance of this model, ranged from 0.88 to 0.91. The average precision was 63% and the average recall rate was 87%. In this experiment, the initialization seed will greatly influence the final result. For example, AUC can be reduced to 0.73 from 0.89 because of a different initialization seed. It perhaps results from the shortage of data, which can easily make the neural network drop into a local minimum.We also utilized Grad-cam to visualize the result. The result of Grad-cam shows the importance of each part to the final prediction(Figure 2).Figure 2.Result of Grad-cam. Numbers in the parenthesises are the possibilities of BME. The middle case is unexpected because red region is the surrounding of the hand. The left and right cases may indicate the evidence for prediction.ConclusionThe preliminary result is much better than a random guess. According to this result, there should be a certain difference between BME and non-BME images. If it’s the characteristic of BME that domains this difference, our classification algorithm will be feasible for BME. Our future work is to justify the evidence of the predictions and improve performance.References[1]Nagy G et al. Eular definition of difficult- to - treat to rheumatoid arthritis. Ann Rheum Dis 2021;80:31-35[2]Colebatch AN et al. Eular recommendation for the use of imaging of joints in the clinical management of rheumatoid arthritis. Ann Rheum Dis 2013;72: 804-814[3]Katayama K et al. Bone marrow OEDEMA is more associated with rapid radiographic progression than in synovitis or bone erosion by using low field MRI in bio-naiive rheumatoid arthritis patients treated with adalimumab and methotrexate combination therapy. Ann Rheum Dis 2014, eular meeting SAT0100.Disclosure of InterestsNone declared
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Zheng X, Pan D, Zhu G, Zhang L, Bhamra A, Chen R, Zhang H, Gong Q, Gu Z, Luo K. A Dendritic Polymer-Based Nanosystem Mediates Drug Penetration and Irreversible Endoplasmic Reticulum Stresses in Tumor via Neighboring Effect. Adv Mater 2022; 34:e2201200. [PMID: 35289966 DOI: 10.1002/adma.202201200] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/09/2022] [Indexed: 02/05/2023]
Abstract
Nanoparticles (NPs)-based cancer therapeutics are generally impeded by poor drug penetration into solid tumors due to their dense tumor extracellular matrix (ECM). Herein, pH/redox-responsive dendritic polymer-based NPs are developed to amplify the neighboring effect for improving drug penetration and driving cell apoptosis via combination therapy. Pyropheophorbide a (Ppa) is conjugated with PEGylated dendritic peptides via disulfide bonds and doxorubicin (DOX) encapsulated in the conjugate to construct dual-responsive NPs, PDPP@D. Delayed released DOX and Ppa from PDPP@D exert their combination therapeutic effect to induce cell apoptosis, and then they are liberated out of dying cells to amplify the neighboring effect, resulting in their diffusion through the dense ECM and penetration into solid tumors. Transcriptome studies reveal that PDPP@D leads to irreversible stress on the endoplasmic reticulum and inhibits cell protection through blocking the IRE1-dependent survival pathway and unleashing the DR5-mediated caspase activity to promote cell death. The strategy of amplifying the neighboring effect of NPs through combination therapy may offer great potential in enhancing drug penetration and eradicating solid tumors.
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Affiliation(s)
- Xiuli Zheng
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Guonian Zhu
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.,Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, and Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lu Zhang
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, and Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Apanpreet Bhamra
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Qiyong Gong
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.,Functional and molecular imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Zhongwei Gu
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.,Functional and molecular imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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Gu L, Duan Z, Chen X, Li X, Luo Q, Bhamra A, Pan D, Zhu H, Tian X, Chen R, Gu Z, Zhang H, Qian Z, Gong Q, Luo K. A Transformable Amphiphilic and Block Polymer-Dendron Conjugate for Enhanced Tumor Penetration and Retention with Cellular Homeostasis Perturbation via Membrane Flow. Adv Mater 2022; 34:e2200048. [PMID: 35170102 DOI: 10.1002/adma.202200048] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/04/2022] [Indexed: 02/05/2023]
Abstract
Efficient penetration and retention of therapeutic agents in tumor tissues can be realized through rational design of drug delivery systems. Herein, a polymer-dendron conjugate, POEGMA-b-p(GFLG-Dendron-Ppa) (GFLG-DP), is presented, which allows a cathepsin-B-triggered stealthy-to-sticky structural transformation. The compositions and ratios are optimized through dissipative particle dynamics simulations. GFLG-DP displays tumor-specific transformation and the consequently released dendron-Ppa is found to effectively accumulate on the tumor cell membrane. The interaction between the dendron-Ppa and the tumor cell membrane results in intracellular and intercellular transport via membrane flow, thus achieving efficient deep penetration and prolonged retention of therapeutic agents in the solid tumor tissues. Meanwhile, the interaction of dendron-Ppa with the endoplasmic reticulum disrupts cell homeostasis, making tumor cells more vulnerable and susceptible to photodynamic therapy. This platform represents a versatile approach to augmenting the tumor therapeutic efficacy of a nanomedicine via manipulation of its interactions with tumor membrane systems.
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Affiliation(s)
- Lei Gu
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Zhenyu Duan
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Xiaoting Chen
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Xiaoling Li
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Qiang Luo
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Apanpreet Bhamra
- Department of Chemical Engineering Imperial College London South Kensington Campus London SW7 2AZ UK
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Xiaohe Tian
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology Chinese Academy of Medical Sciences Chengdu 610041 China
| | - Rongjun Chen
- Department of Chemical Engineering Imperial College London South Kensington Campus London SW7 2AZ UK
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Hu Zhang
- Amgen Bioprocessing Centre Keck Graduate Institute Claremont CA 91711 USA
| | - Zhiyong Qian
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology Chinese Academy of Medical Sciences Chengdu 610041 China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC) Animal Experimental Center Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology Chinese Academy of Medical Sciences Chengdu 610041 China
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Li Y, Chen Z, Gu L, Duan Z, Pan D, Xu Z, Gong Q, Li Y, Zhu H, Luo K. Anticancer nanomedicines harnessing tumor microenvironmental components. Expert Opin Drug Deliv 2022; 19:337-354. [PMID: 35244503 DOI: 10.1080/17425247.2022.2050211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Small-molecular drugs are extensively used in cancer therapy, while they have issues of nonspecific distribution and consequent side effects. Nanomedicines that incorporate chemotherapeutic drugs have been developed to enhance the therapeutic efficacy of these drugs and reduce their side effects. One of the promising strategies is to prepare nanomedicines by harnessing the unique tumor microenvironment (TME). AREAS COVERED The TME contains numerous cell types that specifically express specific antibodies on the surface including tumor vascular endothelial cells, tumor-associated adipocytes, tumor-associated fibroblasts, tumor-associated immune cells and cancer stem cells. The physicochemical environment is characterized with a low pH, hypoxia, and a high redox potential resulting from tumor-specific metabolism. The intelligent nanomedicines can be categorized into two groups: the first group which is rapidly responsive to extracellular chemical/biological factors in the TME and the second one which actively and/or specifically targets cellular components in the TME. EXPERT OPINION In this paper, we review recent progress of nanomedicines by harnessing the TME and illustrate the principles and advantages of different strategies for designing nanomedicines, which are of great significance for exploring novel nanomedicines or translating current nanomedicines into clinical practice. We will discuss the challenges and prospects of preparing nanomedicines to utilize or alter the TME for achieving effective, safe anticancer treatment.
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Affiliation(s)
- Yinggang Li
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhonglan Chen
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.,Chinese Evidence-Based Medicine Centre, Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lei Gu
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhengyu Duan
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dayi Pan
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhuping Xu
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.,Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Youping Li
- Chinese Evidence-Based Medicine Centre, Cochrane China Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hongyan Zhu
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kui Luo
- Laboratory of Stem Cell Biology, Department of Cardiology, Department of Radiology, Huaxi MR Research Center (HMRRC), National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China.,Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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24
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Pan D, Zheng X, Zhang L, Li X, Zhu G, Gong M, Kopytynski M, Zhou L, Yi Y, Zhu H, Tian X, Chen R, Zhang H, Gu Z, Gong Q, Luo K. Synergistic Disruption of Metabolic Homeostasis through Hyperbranched Poly(ethylene glycol) Conjugates as Nanotherapeutics to Constrain Cancer Growth. Adv Mater 2022; 34:e2109036. [PMID: 34990517 DOI: 10.1002/adma.202109036] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/22/2021] [Indexed: 02/05/2023]
Abstract
Combination therapy is a promising approach for effective treatment of tumors through synergistically regulating pathways. However, the synergistic effect is limited, likely by uncontrolled co-delivery of different therapeutic payloads in a single nanoparticle. Herein, a combination nanotherapeutic is developed by using two amphiphilic conjugates, hyperbranched poly(ethylene glycol)-pyropheophorbide-a (Ppa) (HP-P) and hyperbranched poly(ethylene glycol)-doxorubicin (DOX) (HP-D) to construct co-assembly nanoparticles (HP-PD NPs) for controllably co-loading and co-delivering Ppa and DOX. In vitro and in vivo antitumor studies confirm the synergistic effect of photodynamic therapy and chemotherapy from HP-PD NPs. Metabolic variations reveal that tumor suppression is associated with disruption of metabolic homeostasis, leading to reduced protein translation. This study uncovers the manipulation of metabolic changes in tumor cells through disruption of cellular homeostasis using HP-PD NPs and provides a new insight into the rational design of synergistic nanotherapeutics for combination therapy.
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Affiliation(s)
- Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lu Zhang
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, Laboratory of Stem Cell Biology, Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xin Li
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, Laboratory of Stem Cell Biology, Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Guonian Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, Laboratory of Stem Cell Biology, Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Meng Gong
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, Laboratory of Stem Cell Biology, Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Michal Kopytynski
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Luonan Zhou
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yong Yi
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Laboratory of Clinical Proteomics and Metabolomics, Institutes for Systems Genetics, Laboratory of Stem Cell Biology, Core Facility of West China Hospital, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiaohe Tian
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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Cai H, Tan P, Chen X, Kopytynski M, Pan D, Zheng X, Gu L, Gong Q, Tian X, Gu Z, Zhang H, Chen R, Luo K. Stimuli-Sensitive Linear-Dendritic Block Copolymer-Drug Prodrug as a Nanoplatform for Tumor Combination Therapy. Adv Mater 2022; 34:e2108049. [PMID: 34875724 DOI: 10.1002/adma.202108049] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/28/2021] [Indexed: 02/05/2023]
Abstract
Linear-dendritic block copolymer (LDBCs) are highly attractive candidates for smart drug-delivery vehicles. Herein, an amphiphilic poly[(ethylene glycol) methyl ether methacrylate] (POEGMA) linear-peptide dendritic prodrug of doxorubicin (DOX) prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization is reported. The hydrophobic-dye-based photosensitizer chlorin e6 (Ce6) is employed for encapsulation in the prodrug nanoparticles (NPs) to obtain an LDBCs-based drug-delivery system (LD-DOX/Ce6) that offers a combination cancer therapy. Due to the presence of Gly-Phe-Leu-Gly peptides and hydrazone bonds in the prodrug structure, LD-DOX/Ce6 is degraded into small fragments, thus specifically triggering the intracellular release of DOX and Ce6 in the tumor microenvironment. Bioinformatics analysis suggests that LD-DOX/Ce6 with laser irradiation treatment significantly induces apoptosis, DNA damage, and cell cycle arrest. The combination treatment can not only suppress tumor growth, but also significantly reduce tumor metastasis compared with treatments with DOX or Ce6 through regulating EMT pathway, TGFβ pathway, angiogenesis, and the hypoxia pathway. LD-DOX/Ce6 displays a synergistic chemo-photodynamic antitumor efficacy, resulting in a high inhibition in tumor growth and metastasis, while maintaining an excellent biosafety. Therefore, this study demonstrates the potential of the biodegradable and tumor-microenvironment-responsive LDBCs as an intelligent multifunctional drug-delivery vehicle for high-efficiency cancer combination therapy.
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Affiliation(s)
- Hao Cai
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Ping Tan
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Xiaoting Chen
- Animal Experimental Center of West China Hospital Sichuan University Chengdu 610041 China
| | - Michal Kopytynski
- Department of Chemical Engineering Imperial College London South Kensington Campus London SW7 2AZ UK
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Xiuli Zheng
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Lei Gu
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology Chinese Academy of Medical Sciences Chengdu 610041 China
| | - Xiaohe Tian
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
| | - Hu Zhang
- Amgen Bioprocessing Centre Keck Graduate Institute Claremont CA 91711 USA
| | - Rongjun Chen
- Department of Chemical Engineering Imperial College London South Kensington Campus London SW7 2AZ UK
| | - Kui Luo
- Huaxi MR Research Center (HMRRC) Department of Radiology National Clinical Research Center for Geriatrics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu 610041 China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province and Research Unit of Psychoradiology Chinese Academy of Medical Sciences Chengdu 610041 China
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Cuthbert JJ, Brown OI, Urbinati A, Pan D, Pellicori P, Dobbs K, Bulemfu J, Kazmi S, Sokoreli I, Pauws SC, Riistama JM, Cleland JGF, Clark AL. Hypochloraemia following admission to hospital with heart failure is common and associated with an increased risk of readmission or death: a report from OPERA-HF. Eur Heart J Acute Cardiovasc Care 2022; 11:43-52. [PMID: 34897402 DOI: 10.1093/ehjacc/zuab097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/19/2021] [Accepted: 10/11/2021] [Indexed: 06/14/2023]
Abstract
AIMS Hypochloraemia is common in patients hospitalized with heart failure (HF) and associated with a high risk of adverse outcomes during admission and following discharge. We assessed the significance of changes in serum chloride concentrations in relation to serum sodium and bicarbonate concentrations during admission in a cohort of 1002 consecutive patients admitted with HF and enrolled into an observational study based at a single tertiary centre in the UK. METHODS AND RESULTS Hypochloraemia (<96 mmol/L), hyponatraemia (<135 mmol/L), and metabolic alkalosis (bicarbonate >32 mmol/L) were defined by local laboratory reference ranges. Outcomes assessed were all-cause mortality, all-cause mortality or all-cause readmission, and all-cause mortality or HF readmission. Cox regression and Kaplan-Meier curves were used to investigate associations with outcome. During a median follow-up of 856 days (interquartile range 272-1416), discharge hypochloraemia, regardless of serum sodium, or bicarbonate levels was associated with greater all-cause mortality [hazard ratio (HR) 1.44, 95% confidence interval (CI) 1.15-1.79; P = 0.001], all-cause mortality or all-cause readmission (HR 1.26, 95% CI 1.04-1.53; P = 0.02), and all-cause mortality or HF readmission (HR 1.41, 95% CI 1.14-1.74; P = 0.002) after multivariable adjustment. Patients with concurrent hypochloraemia and natraemia had lower haemoglobin and haematocrit, suggesting congestion; those with hypochloraemia and normal sodium levels had more metabolic alkalosis, suggesting decongestion. CONCLUSION Hypochloraemia is common at discharge after a hospitalization for HF and is associated with worse outcome subsequently. It is an easily measured clinical variables that is associated with morbidity or mortality of any cause.
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Affiliation(s)
- J J Cuthbert
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
| | - O I Brown
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
| | - A Urbinati
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - D Pan
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - P Pellicori
- Robertson Centre for Biostatistics, Glasgow Clinical Trials Unit, University of Glasgow, Glasgow G12 8QQ, UK
| | - K Dobbs
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - J Bulemfu
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - S Kazmi
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - I Sokoreli
- Remote Patient Management & Chronic Care, Philips Research, Eindhoven 5656 AE, the Netherlands
| | - S C Pauws
- Remote Patient Management & Chronic Care, Philips Research, Eindhoven 5656 AE, the Netherlands
- Department of Communication and Cognition, Tilburg University, Tilburg 5037 AB, the Netherlands
| | - J M Riistama
- Philips Image Guided Therapy Devices, Best 1096 BC, The Netherlands
| | - J G F Cleland
- Robertson Centre for Biostatistics, Glasgow Clinical Trials Unit, University of Glasgow, Glasgow G12 8QQ, UK
| | - A L Clark
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
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Lawson CD, Hornigold K, Pan D, Niewczas I, Andrews S, Clark J, Welch HCE. Small-molecule inhibitors of P-Rex guanine-nucleotide exchange factors. Small GTPases 2022; 13:307-326. [PMID: 36342857 PMCID: PMC9645260 DOI: 10.1080/21541248.2022.2131313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
P-Rex1 and P-Rex2 are guanine-nucleotide exchange factors (GEFs) that activate Rac small GTPases in response to the stimulation of G protein-coupled receptors and phosphoinositide 3-kinase. P-Rex Rac-GEFs regulate the morphology, adhesion and migration of various cell types, as well as reactive oxygen species production and cell cycle progression. P-Rex Rac-GEFs also have pathogenic roles in the initiation, progression or metastasis of several types of cancer. With one exception, all P-Rex functions are known or assumed to be mediated through their catalytic Rac-GEF activity. Thus, inhibitors of P-Rex Rac-GEF activity would be valuable research tools. We have generated a panel of small-molecule P-Rex inhibitors that target the interface between the catalytic DH domain of P-Rex Rac-GEFs and Rac. Our best-characterized compound, P-Rex inhibitor 1 (PREX-in1), blocks the Rac-GEF activity of full-length P-Rex1 and P-Rex2, and of their isolated catalytic domains, in vitro at low-micromolar concentration, without affecting the activities of several other Rho-GEFs. PREX-in1 blocks the P-Rex1 dependent spreading of PDGF-stimulated endothelial cells and the production of reactive oxygen species in fMLP-stimulated mouse neutrophils. Structure-function analysis revealed critical structural elements of PREX-in1, allowing us to develop derivatives with increased efficacy, the best with an IC50 of 2 µM. In summary, we have developed PREX-in1 and derivative small-molecule compounds that will be useful laboratory research tools for the study of P-Rex function. These compounds may also be a good starting point for the future development of more sophisticated drug-like inhibitors aimed at targeting P-Rex Rac-GEFs in cancer.
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Affiliation(s)
- CD Lawson
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - K Hornigold
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - D Pan
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - I Niewczas
- Biological Chemistry Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - S Andrews
- Bioinformatics Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - J Clark
- Biological Chemistry Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - HCE Welch
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK,CONTACT HCE Welch Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3ATUK
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Du W, Pan D, Xiang P, Xiong C, Zhang M, Zhang Q, Tian Y, Zhang Z, Chen B, Luo K, Gong Q, Tian X. Terpyridine Zn(II) Complexes with Azide Units for Visualization of Histone Deacetylation in Living Cells under STED Nanoscopy. ACS Sens 2021; 6:3978-3984. [PMID: 34498846 DOI: 10.1021/acssensors.1c01287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Histones are the alkali proteins in eukaryotic somatic chromatin cells which constitute the nucleosome structure together with DNA. Their abnormality is often associated with multiple tumorigenesis and other human diseases. Nevertheless, a simple and efficient super-resolution method to visualize histone distribution at the subcellular level is still unavailable. Herein, a Zn(II) terpyridine complex with rich-electronic azide units, namely, TpZnA-His, was designed and synthesized. The initial in vitro and in silico studies suggested that this complex is able to detect histones rapidly and selectively via charge-charge interactions with the histone H3 subunit. Its live cell nuclear localization, red-emission tail, and large Stokes shift allowed super-resolution evaluation of histone distributions with a clear distinction against nuclear DNA. We were able to quantitatively conclude three histone morphology alternations in live cells including condensation, aggregation, and cavity during activating histone acetylation. This work offers a better understanding as well as a versatile tool to study histone-involved gene transcription, signal transduction, and differentiation in cells.
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Affiliation(s)
- Wei Du
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Dayi Pan
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Pan Xiang
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chaoya Xiong
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
| | - Mingzhu Zhang
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
| | - Qiong Zhang
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
| | - Yupeng Tian
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
| | - Zhongping Zhang
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
- CAS Centre for Excellence in Nanoscience, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Bo Chen
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Kui Luo
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Xiaohe Tian
- Huaxi Magnetic Resonance Research Centre (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China
- Department of Chemistry, School of Life Science, Institute of Physical Science and Information Technology, Anhui University, Hefei 230000, P. R. China
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Zheng X, Pan D, Chen X, Wu L, Chen M, Wang W, Zhang H, Gong Q, Gu Z, Luo K. Self-Stabilized Supramolecular Assemblies Constructed from PEGylated Dendritic Peptide Conjugate for Augmenting Tumor Retention and Therapy. Adv Sci (Weinh) 2021; 8:e2102741. [PMID: 34623034 PMCID: PMC8596125 DOI: 10.1002/advs.202102741] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/22/2021] [Indexed: 02/05/2023]
Abstract
Supramolecular self-assemblies of dendritic peptides with well-organized nanostructures have great potential as multifunctional biomaterials, yet the complex self-assembly mechanism hampers their wide exploration. Herein, a self-stabilized supramolecular assembly (SSA) constructed from a PEGylated dendritic peptide conjugate (PEG-dendritic peptide-pyropheophorbide a, PDPP), for augmenting tumor retention and therapy, is reported. The supramolecular self-assembly process of PDPP is concentration-dependent with multiple morphologies. By tailoring the concentration of PDPP, the supramolecular self-assembly is driven by noncovalent interactions to form a variety of SSAs (unimolecular micelles, oligomeric aggregates, and multi-aggregates) with different sizes from nanometer to micrometer. SSAs at 100 nm with a spherical shape possess extremely high stability to prolong blood circulation about 4.8-fold higher than pyropheophorbide a (Ppa), and enhance tumor retention about eight-fold higher than Ppa on day 5 after injection, which leads to greatly boosting the in vivo photodynamic therapeutic efficiency. RNA-seq demonstrates that these effects of SSAs are related to the inhibition of MET-PI3K-Akt pathway. Overall, the supramolecular self-assembly mechanism for the synthetic PEGylated dendritic peptide conjugate sheds new light on the development of supramolecular assemblies for tumor therapy.
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Affiliation(s)
- Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
- National Engineering Research Center for BiomaterialsSichuan UniversityChengdu610064China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
| | - Xiaoting Chen
- Animal Experimental Center of West China HospitalCore Facility of West China HospitalSichuan UniversityChengdu610041China
| | - Lei Wu
- Animal Experimental Center of West China HospitalCore Facility of West China HospitalSichuan UniversityChengdu610041China
| | - Miao Chen
- West China School of MedicineWest China College of StomatologySichuan UniversityChengdu610041China
| | - Wenjia Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
| | - Hu Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
- Amgen Bioprocessing CentreKeck Graduate InstituteClaremontCA91711USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
- Functional and Molecular Imaging Key Laboratory of Sichuan ProvinceResearch Unit of PsychoradiologyChinese Academy of Medical SciencesChengdu610041China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
- National Engineering Research Center for BiomaterialsSichuan UniversityChengdu610064China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Frontiers Science Center for Disease‐Related Molecular Network, State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengdu610041China
- National Engineering Research Center for BiomaterialsSichuan UniversityChengdu610064China
- Functional and Molecular Imaging Key Laboratory of Sichuan ProvinceResearch Unit of PsychoradiologyChinese Academy of Medical SciencesChengdu610041China
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Wang W, Zhang X, Li Z, Pan D, Zhu H, Gu Z, Chen J, Zhang H, Gong Q, Luo K. Dendronized hyaluronic acid-docetaxel conjugate as a stimuli-responsive nano-agent for breast cancer therapy. Carbohydr Polym 2021; 267:118160. [PMID: 34119134 DOI: 10.1016/j.carbpol.2021.118160] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/04/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023]
Abstract
To achieve target delivery of anti-tumor drugs with great biocompatibility into tumor tissues, a stimuli-responsive dendronized hyaluronic acid (HA)-docetaxel conjugate (HA-DTX-Dendron, HADD) was designed and prepared. The incorporation of HA in HADD improved the delivery of DTX to tumor cells with rich CD44 receptors. Enhanced biocompatibility and therapeutic outcomes were achieved using glyodendrons-modified HA and tumor microenvironment-responsive linkers in HADD. The glycodendron was connected with HA via GSH-responsive disulfide bonds, and the drug DTX was linked to the carrier via a cathepsin B-responsive tetrapeptide GFLG. This design resulted in self-assembly nanostructures for facilitating uptake of HADD by tumor cells and rapid release of DTX to exert its therapeutic effect. Compared to free DTX, HADD showed much higher tumor growth inhibition in the MDA-MB-231 tumor-bearing mice model (up to 99.71%), and no toxicity was observed. Therefore, HADD could be employed as an efficacious nano-agent for treating triple negative breast cancer (TNBC).
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Affiliation(s)
- Wenjia Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaoqin Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China; College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jie Chen
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu 610041, China.
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Department of Breast Surgery, Clinical Research Center for Breast, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, China.
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Guo S, Wang X, Li Z, Pan D, Dai Y, Ye Y, Tian X, Gu Z, Gong Q, Zhang H, Luo K. A nitroxides-based macromolecular MRI contrast agent with an extraordinary longitudinal relaxivity for tumor imaging via clinical T1WI SE sequence. J Nanobiotechnology 2021; 19:244. [PMID: 34391417 PMCID: PMC8364710 DOI: 10.1186/s12951-021-00990-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 08/05/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Macromoleculization of nitroxides has been an effective strategy to improve low relaxivities and poor in vivo stability, however, nitroxides-based metal-free magnetic resonance imaging (MRI) macromolecular contrast agents (mCAs) are still under-performed. These mCAs do not possess a high nitroxides content sufficient for a cumulative effect. Amphiphilic nanostructures in these mCAs are not stable enough for highly efficient protection of nitroxides and do not have adequate molecular flexibility for full contact of the paramagnetic center with the peripheral water molecules. In addition, these mCAs still raise the concerns over biocompatibility and biodegradability due to the presence of macromolecules in these mCAs. RESULTS Herein, a water-soluble biodegradable nitroxides-based mCA (Linear pDHPMA-mPEG-Ppa-PROXYL) was prepared via covalent conjugation of a nitroxides (2,2,5,5-tetramethyl-1-pyrrolidinyl-N-oxyl, PROXYL) onto an enzyme-sensitive linear di-block poly[N-(1, 3-dihydroxypropyl) methacrylamide] (pDHPMA). A high content of PROXYL up to 0.111 mmol/g in Linear pDHPMA-mPEG-Ppa-PROXYL was achieved and a stable nano-sized self-assembled aggregate in an aqueous environment (ca. 23 nm) was formed. Its longitudinal relaxivity (r1 = 0.93 mM- 1 s- 1) was the highest compared to reported nitroxides-based mCAs. The blood retention time of PROXYL from the prepared mCA in vivo was up to ca. 8 h and great accumulation of the mCA was realized in the tumor site due to its passive targeting ability to tumors. Thus, Linear pDHPMA-mPEG-Ppa-PROXYL could provide a clearly detectable MRI enhancement at the tumor site of mice via the T1WI SE sequence conventionally used in clinical Gd3+-based contrast agents, although it cannot be compared with DTPA-Gd in the longitudinal relaxivity and the continuous enhancement time at the tumor site of mice. Additionally, it was demonstrated to have great biosafety, hemocompatibility and biocompatibility. CONCLUSIONS Therefore, Linear pDHPMA-mPEG-Ppa-PROXYL could be a potential candidate as a substitute of metal-based MRI CAs for clinical application.
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Affiliation(s)
- Shiwei Guo
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
- Department of Pharmacy of the Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, 646000, People's Republic of China
| | - Xiaoming Wang
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
- Department of Radiology, Chongqing General Hospital, University of Chinese Academy of Sciences (UCAS), No.104 Pipashan Main Street, Yuzhong District, Chongqing, 400014, China
| | - Zhiqian Li
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
| | - Dayi Pan
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
| | - Yan Dai
- Department of Pharmacy of the Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Yun Ye
- Department of Pharmacy of the Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Xiaohe Tian
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
| | - Zhongwei Gu
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
| | - Qiyong Gong
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Kui Luo
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, National Clinical Research Center for Geriatrics, Sichuan University, 610041, Chengdu, China.
- Functional and Molecular Imaging Key Laboratory of Sichuan Province, Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China.
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Chen KH, Pan JF, Chen ZX, Pan D, Gao T, Huang M, Huang JN. Effects of hsa_circ_0000711 expression level on proliferation and apoptosis of hepatoma cells. Eur Rev Med Pharmacol Sci 2021; 24:4161-4171. [PMID: 32373952 DOI: 10.26355/eurrev_202004_20996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role of human serum albumin (hsa)_circular (circ)_0000711 in hepatocellular carcinoma (HCC). Circular ribonucleic acids (circRNAs) are proven in numerous studies to play crucial role in tumor biology, but their roles in HCC remain unknown to a great extent. PATIENTS AND METHODS The circRNA expression profile microarray was employed to screen differentially expressed circRNAs in tumor tissues and adjacent tissues from HCC patients, and Reverse Transcription-quantitative Polymerase Chain Reaction (RT-qPCR) assay was performed for further verification. Next, the target micro RNAs (miRNAs) and their messenger RNAs (mRNAs) of key circRNAs were predicted by bioinformatics software, and a circRNA-miRNA-mRNA regulatory network was constructed. Subsequently, KEGG and GO enrichment analyses were applied to predict the possible biological processes regulated by hsa_circ_0000711 and relevant signaling pathways. The miRNAs playing a key role in the circRNA-miRNA-mRNA regulatory network were then selected as the objects, and their direct binding to hsa_circ_0000711 was confirmed via luciferase reporter gene assay. Thereafter, hsa_circ_0000711 was overexpressed or knocked out, and the biological function of hsa_circ_0000711 was detected by cell counting kit-8 (CCK-8) assay, apoptosis detection, and 5-Ethynyl-2'-deoxyuridine (EdU) staining assay in vitro. RESULTS The results of expression profile screening revealed that there was a significant difference in the expression profile of circRNAs between tumor tissues and adjacent tissues in HCC patients. Based on the circRNA expression profile and RT-qPCR results, the expression level of hsa_circ_0000711 was overtly reduced in HCC tissues. In addition, miR-103a-3p had the highest eigenvector centrality in the circRNA-miRNA-mRNA regulatory network, suggesting that miR-103a-3p is a vital participant in the pathological mechanism of hsa_circ_0000711. The KEGG enrichment analysis results pointed out that the target genes regulated by hsa_circ_0000711 were clearly enriched in the tumor-associated signaling pathways. Besides, the results of GO enrichment analysis demonstrated that the biological processes regulated by hsa_circ_0000711 were mainly related to cell cycle regulation, so cell proliferation might be affected. The results of luciferase reporter gene and RT-qPCR assays showed that hsa_circ_0000711 directly bound to has-miR-103a-3p to serve as a molecular sponge. The results of CCK-8 and EdU staining assays revealed that the proliferation of hepatoma cells in hsa_circ_0000711 overexpression group was evidently enhanced. In addition, it was further found via flow cytometry that the apoptosis rate of cells was significantly raised in hsa_circ_0000711 low-expression group and dramatically declined in hsa_circ_0000711 overexpression group. CONCLUSIONS Overexpression of hsa_circ_0000711 promoted the proliferation and inhibited the apoptosis of hepatoma cells via targeting has-miR-103a-3p.
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Affiliation(s)
- K-H Chen
- Department of Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
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Wang W, Zhang Q, Li Z, Zhang J, Pan D, Wang B, Zhu H, Zhang H, Gu Z, Luo K. Dendron-Functionalized Polyglutamate-Pyropheophorbide-a Conjugates as Nanomedicines for Breast Cancer Photodynamic Therapy. Macromol Rapid Commun 2021; 42:e2100013. [PMID: 33759304 DOI: 10.1002/marc.202100013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 01/25/2021] [Indexed: 02/05/2023]
Abstract
Photodynamic therapy (PDT) has shown its promise in the treatment of cancer. Herein, a dendron-functionalized polyglutamic acid (PGA) polymer (PG-L8G-Ppa-Dendron, PGPD) is synthesized and it is conjugated with pyropheophorbide-a (Ppa) for the first time to treat triple negative breast cancer (TNBC), whereas a linear polyglutamate-Ppa conjugate (PGP) is synthesized as a control. Compared to the linear counterpart, the glycosylated polymer-based PGPD with a dendritic structure has excellent solubility and it self-assembles to form uniform-sized nanoparticles. PGPD displays a highly effective PDT effect in the animal model, evidenced with effective induction of reactive oxygen species (ROS) production and cell apoptosis. This may be due to an enhanced efficiency in delivery and accumulation of Ppa by this glycosylated dendritic polymer at tumor sites. Therefore, PGPD can be a highly effective and biosafe nanoagent for PDT of TNBC.
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Affiliation(s)
- Wenjia Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qianfeng Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China.,School of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang, 621000, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jing Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China.,Department of Applied Chemistry, Faculty of Science, Sichuan Agricultural University, Yaan, 625014, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Bing Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
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Tao Z, Cao Z, Wang X, Pan D, Jia Q. Long noncoding RNA SNHG14 regulates ox-LDL-induced atherosclerosis cell proliferation and apoptosis by targeting miR-186-5p/WIPF2 axis. Hum Exp Toxicol 2021; 40:47-59. [PMID: 32735135 DOI: 10.1177/0960327120940363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To investigate the role of small nucleolus RNA host gene 14 (SNHG14) in the progression of atherosclerosis (AS), bioinformatics analysis, and other relevant experiments (cell counting kit-8, flow cytometry, quantitative real-time polymerase chain reaction, luciferase reporter, RNA immunoprecipitation, RNA pull-down, and western blot assays) were done. The current study revealed that SNHG14 level was high in the serum of AS patients and oxidized low-density lipoprotein (ox-LDL)-induced AS cell lines. Besides, we found that SNHG14 accelerated cell proliferation while inhibited cell apoptosis in ox-LDL-induced AS cell lines. Next, SNHG14 was confirmed to be a sponge for miR-186-5p in AS cells, and it was validated that SNHG14 regulated AS cell proliferation and apoptosis by sponging miR-186-5p. Moreover, we uncovered that WAS-interacting protein family member 2 (WIPF2) was a downstream target of miR-186-5p in AS cells. Finally, it was demonstrated that miR-186-5p modulated AS cell proliferation and apoptosis via targeting WIPF2. To conclude, our research disclosed that SNHG14 affected ox-LDL-induced AS cell proliferation and apoptosis through miR-186-5p/WIPF2 axis, which may provide a theoretical basis for the treatment and diagnosis of AS.
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Affiliation(s)
- Z Tao
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Z Cao
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - X Wang
- Department of Geriatrics, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - D Pan
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Q Jia
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Wu Y, Li F, Zhang X, Li Z, Zhang Q, Wang W, Pan D, Zheng X, Gu Z, Zhang H, Gong Q, Luo K. Tumor microenvironment-responsive PEGylated heparin-pyropheophorbide-a nanoconjugates for photodynamic therapy. Carbohydr Polym 2020; 255:117490. [PMID: 33436250 DOI: 10.1016/j.carbpol.2020.117490] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
To deliver photosensitizers with PEGylated heparin (HP) into tumor cells for photodynamic therapy, we prepared two polyethylene glycol (PEG)-functionalized HP-based polymers conjugated with pyropheophorbide-a (Ppa): a non-GSH-responsive nanoagent (HP-Ppa-mPEG) with the mPEG moiety chemically attached to HP directly; and a GSH-responsive nanoagent (HP-Ppa-SS-mPEG) with the mPEG moiety conjugated to HP via a disulfide linkage. The Ppa-functionalized HP without PEGylation (HP-Ppa) was designed as another control. These amphiphilic polymers could aggregate into nanoparticles. Cellular uptake of three nanoparticles by 4T1 cells led to abundant production of reactive oxygen species after irradiation by a 660 nm laser, inducing cell apoptosis. HP-Ppa-SS-mPEG was found to achieve the highest tumor accumulation, the longest retention time and the best penetration into tumor tissues, resulting in the highest in vivo anticancer efficacy with 94.3 % tumor growth inhibition rate, suggesting that tumor microenvironment-responsive PEGylated HP-based nanomedicines may act as efficient anticancer agents.
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Affiliation(s)
- Yahui Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Fangnian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China; Kindos Pharmaceutical Co., Ltd., No. 8-9 Kexin Road, Chengdu Hi-Tech Comprehensive Bonded Zone, Chengdu, 611731, China
| | - Xiaoqin Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China; College of Preclinical Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Qianfeng Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Wenjia Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA, 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Functional and Molecular Imaging Key Laboratory of Sichuan Province, Sichuan University, Chengdu, 610041, China.
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Zhang X, Wu Y, Li Z, Wang W, Wu Y, Pan D, Gu Z, Sheng R, Tomás H, Zhang H, Rodrigues J, Gong Q, Luo K. Glycodendron/pyropheophorbide-a (Ppa)-functionalized hyaluronic acid as a nanosystem for tumor photodynamic therapy. Carbohydr Polym 2020. [DOI: https://doi.org/10.1016/j.carbpol.2020.116749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang X, Wu Y, Li Z, Wang W, Wu Y, Pan D, Gu Z, Sheng R, Tomás H, Zhang H, Rodrigues J, Gong Q, Luo K. Glycodendron/pyropheophorbide-a (Ppa)-functionalized hyaluronic acid as a nanosystem for tumor photodynamic therapy. Carbohydr Polym 2020; 247:116749. [PMID: 32829865 DOI: 10.1016/j.carbpol.2020.116749] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 02/05/2023]
Abstract
To enhance the drug delivery efficiency of hyaluronic acid (HA), we designed and prepared glycodendron and pyropheophorbide-a (Ppa)-functionalized HA (HA-Ppa-Dendron) as a nanosystem for cancer photodynamic therapy. Linear Ppa-modified HA (HA-Ppa) was also prepared as a control. Cellular uptake of both polymers by MDA-MB-231 cells led to mitochondrial dysfunction and generation of reactive oxygen species under the irradiation of a laser. Compared to the linear polymer, HA-Ppa-Dendron had higher molecular weight, a more compact nanoscale particle size, and a dendritic structure, resulting in a much longer blood circulation time and higher tumor accumulation. HA-Ppa-Dendron outperformed HA-Ppa in inhibiting cell growth, with 60 % of tumors was eradicated under laser irradiation. Tumor growth inhibition (TGI) up to 99.2 % was achieved from HA-Ppa-Dendron, which was much higher than that of HA-Ppa (50.6 %). Therefore, glycodendron-functionalized HAs by integration of HA and dendritic polymers may act as efficient anti-cancer nanomedicine.
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Affiliation(s)
- Xiaoqin Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China; College of Preclinical Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Yahui Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wenjia Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yaping Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ruilong Sheng
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390, Funchal, Portugal
| | - Helena Tomás
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390, Funchal, Portugal
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA 91711, USA
| | - João Rodrigues
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390, Funchal, Portugal
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Pan D, Zheng X, Zhang Q, Li Z, Duan Z, Zheng W, Gong M, Zhu H, Zhang H, Gong Q, Gu Z, Luo K. Dendronized-Polymer Disturbing Cells' Stress Protection by Targeting Metabolism Leads to Tumor Vulnerability. Adv Mater 2020; 32:e1907490. [PMID: 32083784 DOI: 10.1002/adma.201907490] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/22/2019] [Indexed: 02/05/2023]
Abstract
Metabolic demand of cancer is quite unique compared to normal tissues and this is an emerging hallmark of cancer, which brings a potential opportunity to discover drugs that target cancer cell metabolism. Herein, the development of a dendronized pyropheophorbide a (Ppa)-conjugated polymer (DPP) is reported, and a linear Ppa-conjugated polymer (LPP) is reported as a control. DPP is found to disturb cellular metabolism including increased energy depletion, dysfunctional H+ regulation, and decreased antioxidation, resulting in deficiency in protecting cells from stresses. These vulnerable cells are subjected to photodynamic therapy (PDT) treatment in the presence of DPP, resulting in attenuated cancer cell growth and eventually cell death. The in vivo anticancer efficacy is also ascribed to significantly prolonged blood circulation and enhanced tumor accumulation of DPP due to its unique molecular structure. This study presents a new platform using dendronized polymers for tumor suppression by targeting cancer cell metabolism.
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Affiliation(s)
- Dayi Pan
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Xiuli Zheng
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Qianfeng Zhang
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Zhiqian Li
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Zhenyu Duan
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Wen Zheng
- West China‐Washington Mitochondria and Metabolism Research CenterWest China HospitalSichuan University Chengdu 610041 China
| | - Meng Gong
- West China‐Washington Mitochondria and Metabolism Research CenterWest China HospitalSichuan University Chengdu 610041 China
| | - Hongyan Zhu
- Laboratory of Stem Cell BiologyState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Hu Zhang
- Amgen Bioprocessing CentreKeck Graduate Institute Claremont CA 91711 USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
- National Engineering Research Center for BiomaterialsSichuan University Chengdu 610064 China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC)Department of RadiologyFunctional and molecular imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China HospitalSichuan University Chengdu 610041 China
- National Engineering Research Center for BiomaterialsSichuan University Chengdu 610064 China
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Li LQ, Pan D, Zhang SW, -Y-Xie D, Zheng XL, Chen H. Autophagy regulates chemoresistance of gastric cancer stem cells via the Notch signaling pathway. Eur Rev Med Pharmacol Sci 2019; 22:3402-3407. [PMID: 29917191 DOI: 10.26355/eurrev_201806_15162] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Gastric cancer is the most common gastrointestinal malignancy and the leading cause of cancer-related deaths in East Asia. Increasing evidence has revealed that autophagy is closely associated with tumor initiation and progression. The present work aimed to investigate the role of autophagy in adjuvant chemotherapy for gastric cancer. MATERIALS AND METHODS Gastric cancer stem cells (CSCs) were isolated from gastric cancer cell lines using the cell surface markers CD44 and CD54 and cultured in a three-dimensional cell culture system. Western blotting was used to detect their protein expression levels in gastric CSCs. In addition, the cells were treated with inhibitors to investigate the underlying mechanisms of autophagy. RESULTS After isolation of gastric CSCs expressing CD44 and CD54, Western blot analysis showed that the levels of the autophagic marker LC3II were markedly enhanced in CD44+CD54+ gastric CSCs. Moreover, the ratio of LC3II/LC3I protein levels was higher in CD44+CD54+ gastric CSCs than in non-CSCs. By contrast, both a chemotherapeutic agent (5-fluorouracil) and autophagy inhibitor (chloroquine) exhibited an inhibitory effect on the cell viability of gastric CSCs, and their combination further enhanced such inhibitory effects. Mechanistically, the addition of Notch inhibitor decreased the cell viability of gastric CSCs treated with 5-fluorouracil and chloroquine. In addition, 5-fluorouracil and chloroquine both increased the expression of Notch1 in gastric CSCs. CONCLUSIONS These findings show that autophagy regulated drug sensitivity of gastric cancer cells through the Notch signaling pathway.
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Affiliation(s)
- L-Q Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
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Li M, Liu Y, Xu Y, Li Y, Pan D, Wang L, Yan J, Wang X, Yang R, Yang M. Preliminary evaluation of GLP-1R PET in the diagnosis and risk stratification of pheochromocytomas. Neoplasma 2019; 67:27-36. [PMID: 31686522 DOI: 10.4149/neo_2019_190227n163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/22/2019] [Indexed: 11/08/2022]
Abstract
Noninvasive imaging methods for the diagnosis and risk stratification of pheochromocytomas (PHEOs) remain a great clinical challenge. The glucagon-like peptide-1 receptor (GLP-1R) has been validated to be overexpressed in PHEOs and therefore may be a reliable target for PHEOs. In this study, we firstly synthesized a novel radiotracer 68Ga-NOTA-MAL-Cys39-exendin-4 that specifically targets GLP-1R and evaluated the performance of GLP-1R PET for the diagnosis and risk stratification of PHEOs. Cys39-exendin-4 was conjugated to NOTA-MAL and then radiolabeled with 68Ga. The reaction was completed within 20 min with a yield of 91.6 ± 2.8%. In vitro cell uptake studies validated its high specificity. PET images showed promising tumor visualization with high uptake (1.88 ± 0.10 %ID/g for PC-12 poorly differentiated tumors and 1.09 ± 0.003 %ID/g for PC-12 highly differentiated tumors at 30min after injection). There was a significant difference in the uptake of 68Ga-NOTA-MAL-Cys39-exendin-4 between PC-12 poorly and highly differentiated tumors (p < 0.001), but no significant difference could be observed by 18F-FDG PET. Biodistribution results confirmed the findings of GLP-1R PET and demonstrated that 131I-MIBG couldn't be used for the risk stratification of PHEOs. Immunohistochemistry (IHC) staining revealed differences in GLP-1R expression between PC-12 poorly and highly differentiated tumor tissues. These results demonstrated that 68Ga-NOTA-MAL-Cys39-exendin-4 can specifically target GLP-1R with favorable pharmacokinetic properties. GLP-1R PET can be used for PHEOs detection and has potential for the risk stratification of PHEOs.
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Affiliation(s)
- M Li
- School of Pharmaceutical Science, Inner Mongolia Medical University, Hohhot, China
| | - Y Liu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China.,The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Y Xu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - Y Li
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - D Pan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - L Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - J Yan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - X Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - R Yang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - M Yang
- School of Pharmaceutical Science, Inner Mongolia Medical University, Hohhot, China.,Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China.,The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
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Pan D, Feng D, Ding H, Zheng X, Ma Z, Yang B, Xie M. Effects of bisphenol A exposure on DNA integrity and protamination of mouse spermatozoa. Andrology 2019; 8:486-496. [PMID: 31489793 DOI: 10.1111/andr.12694] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 07/04/2019] [Accepted: 07/16/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Bisphenol A is widely used in the manufacture of polycarbonate plastics and has caused increasing concern over its potential adverse impacts on spermatogenesis. However, the effect of bisphenol A on spermiogenesis is yet to be explored. OBJECTIVES To evaluate whether bisphenol A has adverse effects on DNA integrity and protamination of spermatogenic cell. MATERIALS AND METHODS Newborn male mice were subcutaneously injected with bisphenol A (0.1, 5 mg/kg body weight, n = 15) or coin oil (control group, n = 20) daily from post-natal day 1 until 35. At post-natal day 70, epididymis caudal spermatozoa and testes were collected. Sperm count, sperm motility, and sperm morphology were analyzed. The sperm chromatin structure assay was performed to examine the sperm DNA fragmentation. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) method was used to assess apoptosis of spermatogenic cells. The ultrastructural features of testicular sections were examined under a transmission electron microscope. Western blot and RT-PCR were used to detect the expression levels of transition protein (Tnp) 1 and Tnp2, protamine (Prm) 1 and Prm2 protein, and mRNA in mice testes. RESULTS Bisphenol A significantly reduced sperm counts, impaired sperm motility, and increased the percentage of malformed spermatozoa. Poor sperm chromatin integrity and increased TUNEL-positive spermatogenic cells were also observed in mice exposed to bisphenol A. Ultrastructural analysis of testes showed that bisphenol A exposure caused incomplete chromatin condensation, retention of residual cytoplasm, and abnormal acrosome formation. In addition, the relative expression levels of Tnp2 and Prm2 in mice testes decreased significantly in bisphenol A groups. DISCUSSION AND CONCLUSION Our findings identified that neonatal bisphenol A exposure may negatively contribute to the sperm quality in adult mice. Mechanistically, we showed that bisphenol A reduced sperm chromatin integrity along with increased DNA damage, which may be due to poor protamination of spermatozoa.
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Affiliation(s)
- D Pan
- School of Bioscience and Technology, Weifang Medical University, Weifang, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai, China
| | - D Feng
- Department of Obstetrics, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - H Ding
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - X Zheng
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - Z Ma
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - B Yang
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - M Xie
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
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Zheng X, Pan D, Chen M, Dai X, Cai H, Zhang H, Gong Q, Gu Z, Luo K. Tunable Hydrophile-Lipophile Balance for Manipulating Structural Stability and Tumor Retention of Amphiphilic Nanoparticles. Adv Mater 2019; 31:e1901586. [PMID: 31259438 DOI: 10.1002/adma.201901586] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/30/2019] [Indexed: 06/09/2023]
Abstract
Hydrophile-lipophile balance (HLB) has a great influence on the self-assembly and physicochemical properties of amphiphiles, thus affecting their biological effects. It is shown that amphiphilic nanoparticles (NPs) with a moderate HLB value display enhanced stability and highly efficient tumor retention. 2,2-Bis(hydroxymethyl)propionic acid hyperbranched poly(ethylene glycol) (PEG)-pyropheophorbide-a (Ppa) amphiphiles (G320P, G310P, G220P, and G210P) are synthesized with a tunable HLB value from 6.1 to 9.9 by manipulating the number of generation of dendrons (G2 or G3) and the molecular weight of PEG chains (10 or 20 kDa). Molecular dynamics simulations reveal that G320P and G210P with a moderate HLB value (8.0 and 7.8) self-assemble into very stable NPs with a small solvent accessible surface area and high nonbonding interactions. G320P with a moderate HLB value (8.0) and a long PEG chain excels against other NPs in prolonging the blood circulation time of Ppa (up to 13-fold), penetrating deeply into multicellular tumor spheroids and accumulating in tumors, and enhancing the PDT efficacy with a tumor growth inhibition of 96.0%. Rational design of NPs with a moderate HLB value may be implemented in these NP-derived nanomedicines to achieve high levels of retention in tumors.
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Affiliation(s)
- Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Miao Chen
- West China School of Medicine, and West China College of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xinghang Dai
- West China School of Medicine, and West China College of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Hao Cai
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA, 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
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Liu Y, Sheng J, Dong Z, Xu Y, Huang Q, Pan D, Wang L, Yang M. The diagnostic performance of 18F-fluoride PET/CT in bone metastases detection: a meta-analysis. Clin Radiol 2019; 74:196-206. [DOI: 10.1016/j.crad.2018.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 12/11/2018] [Indexed: 10/27/2022]
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Khan MS, Dighe K, Wang Z, Srivastava I, Daza E, Schwartz-Dual AS, Ghannam J, Misra SK, Pan D. Detection of prostate specific antigen (PSA) in human saliva using an ultra-sensitive nanocomposite of graphene nanoplatelets with diblock-co-polymers and Au electrodes. Analyst 2019; 143:1094-1103. [PMID: 29387841 DOI: 10.1039/c7an01932g] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Prostate-specific antigen (PSA) is a commonly used biomarker for the detection of prostate cancer (PCa) and there are numerous data available for its invasive detection in the serum and whole blood. In this work, an electrochemical sensing method was devised to detect traces of PSA in human saliva using a hybrid nanocomposite of graphene nanoplatelets with diblock co-polymers and Au electrodes (GRP-PS67-b-PAA27-Au). The pure graphitic composition on filter paper provides significantly high electrical and thermal conductivity while PS67-b-PAA27 makes an amphiphilic bridge between GRP units. The sensor utilizes the binding of an anti-PSA antibody with an antigen-PSA to act as a resistor in a circuit providing an impedance change that in turn allows for the detection and quantification of PSA in saliva samples. A miniaturized electrical impedance analyzer was interfaced with a sensor chip and the data were recorded in real-time using a Bluetooth-enabled module. This fully integrated and optimized sensing device exhibited a wide PSA range of detection from 0.1 pg mL-1 to 100 ng mL-1 (R2 = 0.963) with a lower limit of detection of 40 fg mL-1. The performance of the biosensor chip was validated with an enzyme-linked immunosorbent assay technique with a regression coefficient as high as 0.940. The advantages of the newly developed saliva-PSA electrical biosensor over previously reported serum-PSA electrochemical biosensors include a faster response time (3-5 min) to achieve a stable electrical signal for PSA detection, high selectivity, improved sensitivity, no additional requirement of a redox electrolyte for electron exchange and excellent shelf life. The presented sensor is aimed for clinical commercialization to detect PSA in human saliva.
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Affiliation(s)
- M S Khan
- Bioengineering Department, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Abstract
Human and animal studies have confirmed that inhalation of particles from ambient air or occupational settings not only causes pathophysiological changes in the respiratory system, but causes cardiovascular effects as well. At an equal mass lung burden, nanoparticles are more potent in causing systemic microvascular dysfunction than fine particles of similar composition. Thus, accumulated evidence from animal studies has led to heightened concerns about the potential short- and long-term deleterious effects of inhalation of engineered nanoparticles on the cardiovascular system. This review highlights the new observations from animal studies, which document the adverse effects of pulmonary exposure to engineered nanoparticles on the cardiovascular system and elucidate the potential mechanisms involved in regulation of cardiovascular function, in particular, how the neuronal system plays a role and reacts to pulmonary nanoparticle exposure based on both in vivo and in vitro studies. In addition, this review also discusses the possible influence of altered autonomic nervous activity on preexisting cardiovascular conditions. Whether engineered nanoparticle exposure serves as a risk factor in the development of cardiovascular diseases warrants further investigation.
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Affiliation(s)
- H Kan
- a Health Effects Laboratory Division , National Institute for Occupational Safety and Health , Morgantown , WV , USA.,b Department of Pharmaceutical Sciences , West Virginia University , Morgantown , WV , USA
| | - D Pan
- a Health Effects Laboratory Division , National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - V Castranova
- b Department of Pharmaceutical Sciences , West Virginia University , Morgantown , WV , USA
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Zhang J, Pellicori P, Pan D, Dierckx R, Clark A, Cleland J. Dynamic risk stratification using serial measurements of plasma concentrations of natriuretic peptides in patients with heart failure. Int J Cardiol 2018; 269:196-200. [DOI: 10.1016/j.ijcard.2018.06.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 06/16/2018] [Accepted: 06/18/2018] [Indexed: 10/28/2022]
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Pan D, Pellicori P, Urbinati A, Sze S, Clark AL. P2281Relationship of the chest x-ray and outcome in patients with hospitalised heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Pan
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - P Pellicori
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - A Urbinati
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - S Sze
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - A L Clark
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
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Luo Q, Xiao X, Dai X, Duan Z, Pan D, Zhu H, Li X, Sun L, Luo K, Gong Q. Cross-Linked and Biodegradable Polymeric System as a Safe Magnetic Resonance Imaging Contrast Agent. ACS Appl Mater Interfaces 2018; 10:1575-1588. [PMID: 29260844 DOI: 10.1021/acsami.7b16345] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Owing to the low efficacy of clinically used small-molecule gadolinium (Gd)-based magnetic resonance imaging (MRI) agents, we designed and explored biodegradable macromolecular conjugates as MRI contrast agents. The linear polymeric structure and core-cross-linked formulation possessed different characteristics and features, so we prepared and comparatively studied the two kinds of Gd-based N-(2-hydroxypropyl) methacrylamide (HPMA) polymeric systems (the core-cross-linked pHPMA-DOTA-Gd and the linear one) using the clinical agent diethylene-triamine pentaacetic acid-Gd(III) (DTPA-Gd) as a control. This study was aimed to find the optimal polymeric formulation as a biocompatible and efficient MRI contrast agent. The high molecular weight (MW, 181 kDa) and core-cross-linked copolymer was obtained via the cross-linked block linear copolymer and could be degraded to low-MW segments (29 kDa) in the presence of glutathione (GSH) and cleaned from the body. Both core-cross-linked and linear pHPMA-DOTA-Gd copolymers displayed 2-3-fold increased relaxivity (r1 value) than that of DTPA-Gd. Animal studies demonstrated that two kinds of macromolecular systems led to much longer blood circulation time, higher tumor accumulation, and much higher signal intensity compared with the linear and clinical ones. Finally, in vivo and in vitro toxicity studies indicated that the two macromolecular agents had great biocompatibility. Therefore, we performed preliminary but important studies on the Gd-based HPMA polymeric systems as biocompatible and efficient MRI contrast agents and found that the biodegradable core-cross-linked pHPMA-DOTA-Gd copolymer might have greater benefits for the foreground.
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Affiliation(s)
- Qiang Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Xueyang Xiao
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Xinghang Dai
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Zhenyu Duan
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Hongyan Zhu
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Xue Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Ling Sun
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, ‡Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, and §West China School of Medicine, Sichuan University , Chengdu 610041, Sichuan, China
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Heuer V, Inagaki F, Morono Y, Kubo Y, Maeda L, Bowden S, Cramm M, Henkel S, Hirose T, Homola K, Hoshino T, Ijiri A, Imachi H, Kamiya N, Kaneko M, Lagostina L, Manners H, McClelland HL, Metcalfe K, Okutsu N, Pan D, Raudsepp M, Sauvage J, Schubotz F, Spivack A, Tonai S, Treude T, Tsang MY, Viehweger B, Wang D, Whitaker E, Yamamoto Y, Yang K. Expedition 370 summary. Proceedings of the International Ocean Discovery Program 2017. [DOI: 10.14379/iodp.proc.370.101.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Jackson C, Stagg HR, Doshi A, Pan D, Sinha A, Batra R, Batra S, Abubakar I, Lipman M. Tuberculosis treatment outcomes among disadvantaged patients in India. Public Health Action 2017; 7:134-140. [PMID: 28695087 PMCID: PMC5493095 DOI: 10.5588/pha.16.0107] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/09/2017] [Indexed: 11/10/2022] Open
Abstract
Setting: Urban slums and poor rural areas in India, 2012-2014. Objective: To describe the characteristics of tuberculosis (TB) patients enrolled in treatment through Operation ASHA, a non-governmental organisation serving disadvantaged populations in India, and to identify risk factors for unfavourable treatment outcomes. Design: This was a retrospective cohort study. Patient characteristics were assessed for their relationship with treatment outcomes using mixed effects logistic regression, adjusting for clustering by treatment centre and Indian state. Outcomes were considered favourable (cured/treatment completed) or unfavourable (treatment failure, loss to follow-up, death, switch to multidrug-resistant TB treatment, transfer out). Results: Of 8415 patients, 7148 (84.9%) had a favourable outcome. On multivariable analysis, unfavourable outcomes were more common among men (OR 1.31, 95%CI 1.15-1.51), older patients (OR 1.12, 95%CI 1.04-1.21) and previously treated patients (OR 2.05, 95%CI 1.79-2.36). Compared to pulmonary smear-negative patients, those with extra-pulmonary disease were less likely to have unfavourable outcomes (OR 0.72, 95%CI 0.60-0.87), while smear-positive pulmonary patients were more likely to have unfavourable outcomes (OR 1.38, 95%CI 1.15-1.66 for low [scanty/1+] and OR 1.71, 95%CI 1.44-2.04 for high [2+/3+] positive smears). Conclusion: The treatment success rate within Operation ASHA is comparable to that reported nationally for India. Men, older patients, retreatment cases and smear-positive pulmonary TB patients may need additional interventions to ensure a favourable outcome.
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Affiliation(s)
- C Jackson
- Institute for Global Health, University College London (UCL), London, UK
| | - H R Stagg
- Institute for Global Health, University College London (UCL), London, UK
| | - A Doshi
- Operation ASHA, New Delhi, India
| | - D Pan
- Medical School, Imperial College London, London, UK
| | - A Sinha
- Operation ASHA, New Delhi, India
| | - R Batra
- Operation ASHA, New Delhi, India
| | - S Batra
- Operation ASHA, New Delhi, India
| | - I Abubakar
- Institute for Global Health, University College London (UCL), London, UK.,Public Health England, London, UK
| | - M Lipman
- UCL Respiratory, Division of Medicine, UCL, London, UK.,Royal Free London National Health Service Foundation Trust, London, UK
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