1
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Chen P, Cabral H. Enhancing Targeted Drug Delivery through Cell-Specific Endosomal Escape. ChemMedChem 2024; 19:e202400274. [PMID: 38830827 DOI: 10.1002/cmdc.202400274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/02/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
Endosome is a major barrier in the intracellular delivery of drugs, especially for biologics, such as proteins, peptides, and nucleic acids. After being endocytosed, these cargos will be trapped inside the endosomal compartments and finally degraded in the lysosomes. Thus, various strategies have been developed to facilitate the escape of cargos from the endosomes to improve the intracellular delivery efficiency. While the majority of the studies are focusing on strengthening the endosomal escape capability to maximize the delivery outcome, recent evidence suggests that a careful control of the endosomal escape process could provide opportunity for targeted drug delivery. In this concept review, we examined current delivery systems that can sense intra-endosomal factors or external stimuli for controlling endosomal escape toward a targeted intracellular delivery of cargos. Furthermore, the prospects and challenges of such strategies are discussed.
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Affiliation(s)
- Pengwen Chen
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Horacio Cabral
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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2
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Lei R, Liu X, Wu J. Nutrition and melanoma: the contribution of trace elements in onset, progression, and treatment of melanoma. Nutr Rev 2024; 82:1138-1149. [PMID: 37702535 DOI: 10.1093/nutrit/nuad106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
Melanoma is a highly malignant and drug-resistant disease that imposes a substantial economic burden on the world. There are many studies linking trace elements to diverse types of cancers, including melanoma. This review elucidates the relationship between trace elements exposure and melanoma. It was identified that copper, manganese, selenium, zinc, iron, and many other trace elements were associated with melanoma in humans. In terms of epidemiology, different elements have different correlations with melanoma. These trace elements affect the occurrence and development of melanoma through various mechanisms, such as oxidative stress and the MAPK pathway. The literature on the role of trace elements in the pathogenesis and treatment of melanoma depicts promising prospects for this field.
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Affiliation(s)
- Rui Lei
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao Liu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jinfeng Wu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
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3
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Zhi HT, Lu Z, Chen L, Wu JQ, Li L, Hu J, Chen WH. Anticancer efficacy triggered by synergistically modulating the homeostasis of anions and iron: Design, synthesis and biological evaluation of dual-functional squaramide-hydroxamic acid conjugates. Bioorg Chem 2024; 147:107421. [PMID: 38714118 DOI: 10.1016/j.bioorg.2024.107421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/12/2024] [Accepted: 04/29/2024] [Indexed: 05/09/2024]
Abstract
Targeting the homeostasis of anions and iron has emerged as a promising therapeutic approach for the treatment of cancers. However, single-targeted agents often fall short of achieving optimal treatment efficacy. Herein we designed and synthesized a series of novel dual-functional squaramide-hydroxamic acid conjugates that are capable of synergistically modulating the homeostasis of anions and iron. Among them, compound 16 exhibited the most potent antiproliferative activity against a panel of selected cancer cell lines, and strong in vivo anti-tumor efficacy. This compound effectively elevated lysosomal pH through anion transport, and reduced the levels of intracellular iron. Compound 16 could disturb autophagy in A549 cells and trigger robust apoptosis. This compound caused cell cycle arrest at the G1/S phase, altered the mitochondrial function and elevated ROS levels. The present findings clearly demonstrated that synergistic modulation of anion and iron homeostasis has high potentials in the development of promising chemotherapeutic agents with dual action against cancers.
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Affiliation(s)
- Hai-Tao Zhi
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Zhonghui Lu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Li Chen
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Jia-Qiang Wu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Lanqing Li
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Jinhui Hu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China.
| | - Wen-Hua Chen
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China.
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4
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Chen P, Yang W, Mochida Y, Li S, Hong T, Kinoh H, Kataoka K, Cabral H. Selective Intracellular Delivery of Antibodies in Cancer Cells with Nanocarriers Sensing Endo/Lysosomal Enzymatic Activity. Angew Chem Int Ed Engl 2024; 63:e202317817. [PMID: 38342757 DOI: 10.1002/anie.202317817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/13/2024]
Abstract
The differential enzymatic activity in the endo/lysosomes of particular cells could trigger targeted endosomal escape functions, enabling selective intracellular protein delivery. However, this strategy may be jeopardized due to protein degradation during endosomal trafficking. Herein, using custom made fluorescent probes to assess the endosomal activity of cathepsin B (CTSB) and protein degradation, we found that certain cancer cells with hyperacidified endosomes grant a spatiotemporal window where CTSB activity surpass protein digestion. This inspired the engineering of antibody-loaded polymeric nanocarriers having CTSB-activatable endosomal escape ability. The nanocarriers selectively escaped from the endo/lysosomes in the cells with high endosomal CTSB activity and delivered active antibodies to intracellular targets. This study provides a viable strategy for cell-specific protein delivery using stimuli-responsive nanocarriers with controlled endosomal escape.
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Affiliation(s)
- Pengwen Chen
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Wenqian Yang
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yuki Mochida
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki, 210-0821, Japan
- Department of Advanced Nanomedical Engineering, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Shangwei Li
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Taehun Hong
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroaki Kinoh
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki, 210-0821, Japan
| | - Kazunori Kataoka
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki, 210-0821, Japan
| | - Horacio Cabral
- Department of Bioengineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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5
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Zhao WN, Xing J, Wang M, Li H, Sun S, Wang X, Xu Y. Engineering a hyaluronic acid-encapsulated tumor-targeted nanoplatform with sensitized chemotherapy and a photothermal effect for enhancing tumor therapy. Int J Biol Macromol 2024; 264:130785. [PMID: 38471605 DOI: 10.1016/j.ijbiomac.2024.130785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/17/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024]
Abstract
Chemotherapy remains one of the most widely used cancer treatment modalities in clinical practice. However, the characteristic microenvironment of solid tumors severely limits the anticancer efficacy of chemotherapy. In addition, a single treatment modality or one death pathway reduces the antitumor outcome. Herein, tumor-targeting O2 self-supplied nanomodules (CuS@DOX/CaO2-HA) are proposed that not only alleviate tumor microenvironmental hypoxia to promote the accumulation of chemotherapeutic drugs in tumors but also exert photothermal effects to boost drug release, penetration and combination therapy. CuS@DOX/CaO2-HA consists of copper sulfide (CuS)-loaded calcium peroxide (CaO2) and doxorubicin (DOX), and its surface is further modified with HA. CuS@DOX/CaO2-HA underwent photothermal treatment to release DOX and CaO2. Hyperthermia accelerates drug penetration to enhance chemotherapeutic efficacy. The exposed CaO2 reacts with water to produce Ca2+, H2O2 and O2, which sensitizes cells to chemotherapy through mitochondrial damage caused by calcium overload and a reduction in drug efflux via the alleviation of hypoxia. Moreover, under near infrared (NIR) irradiation, CuS@DOX/CaO2-HA initiates a pyroptosis-like cell death process in addition to apoptosis. In vivo, CuS@DOX/CaO2-HA demonstrated high-performance antitumor effects. This study provides a new strategy for synergistic enhancement of chemotherapy in hypoxic tumor therapy via combination therapy and multiple death pathways.
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Affiliation(s)
- Wei-Nan Zhao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China; School of Basic Medicine and Life Science, Hainan Medical University, Haikou 571199, PR China
| | - Jianghao Xing
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, PR China
| | - Min Wang
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, PR China
| | - Hongjuan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Shiguo Sun
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xianwen Wang
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, PR China.
| | - Yongqian Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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6
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Tikhomirov AS, Sinkevich YB, Dezhenkova LG, Kaluzhny DN, Ilyinsky NS, Borshchevskiy VI, Schols D, Shchekotikhin AE. Synthesis and antitumor activity of cyclopentane-fused anthraquinone derivatives. Eur J Med Chem 2024; 265:116103. [PMID: 38176358 DOI: 10.1016/j.ejmech.2023.116103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/21/2023] [Accepted: 12/25/2023] [Indexed: 01/06/2024]
Abstract
In our pursuit of developing novel analogs of anthracyclines with enhanced antitumor efficacy and safety, we have designed a synthesis scheme for 4,11-dihydroxy-5,10-dioxocyclopenta[b]anthracene-2-carboxamides. These newly synthesized compounds exhibit remarkable antiproliferative potency against various mammalian tumor cell lines, including those expressing activated mechanisms of multidrug resistance. The structure of the diamine moiety in the carboxamide side chain emerges as a critical determinant for anticancer activity and interaction with key targets such as DNA, topoisomerase 1, and ROS induction. Notably, the introduced modification to the doxorubicin structure results in significantly increased lipophilicity, cellular uptake, and preferential distribution in lysosomes. Consequently, while maintaining an impact on anthracyclines targets, these novel derivatives also demonstrate the potential to induce cytotoxicity through pathways associated with lysosomes. In summary, derivatives of cyclic diamines, particularly 3-aminopyrrolidine, can be considered a superior choice compared to aminosugars for incorporation into natural and semi-synthetic anthracyclines or new anthraquinone derivatives, aiming to circumvent efflux-mediated drug resistance.
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Affiliation(s)
- Alexander S Tikhomirov
- Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow, 119021, Russian Federation
| | - Yuri B Sinkevich
- Mendeleyev University of Chemical Technology, 9 Miusskaya Square, Moscow, 125047, Russian Federation
| | - Lyubov G Dezhenkova
- Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow, 119021, Russian Federation
| | - Dmitry N Kaluzhny
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilov Street, 119991, Moscow, Russian Federation
| | - Nikolay S Ilyinsky
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, 141700, Russian Federation
| | - Valentin I Borshchevskiy
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, 141700, Russian Federation
| | - Dominique Schols
- Rega Institute for Medical Research, K.U. Leuven, 3000, Leuven, Belgium
| | - Andrey E Shchekotikhin
- Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow, 119021, Russian Federation.
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7
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Liu F, Wei X, Chen Z, Chen Y, Hu P, Jin Y. PFKFB2 is a favorable prognostic biomarker for colorectal cancer by suppressing metastasis and tumor glycolysis. J Cancer Res Clin Oncol 2023; 149:10737-10752. [PMID: 37311985 DOI: 10.1007/s00432-023-04946-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/26/2023] [Indexed: 06/15/2023]
Abstract
PURPOSE This study was to investigate the biological effect of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (PFKFB2) in colorectal cancer (CRC). METHODS PFKFB2 was selected by metabolism polymerase chain reaction (PCR) array from CRC cells under alkaline culture medium (pH 7.4) and acidic culture medium (pH 6.8). The expression of PFKFB2 mRNA and protein was detected by quantitative real-time PCR and immunohistochemistry in 70 paired fresh and 268 paired paraffin-embedded human CRC tissues, respectively, and then the prognostic value of PFKFB2 was investigated. The effects of PFKFB2 on CRC cells were also verified in vitro, which were through detecting the change of migration, invasion, sphere formation, proliferation, colony formation, and extracellular acidification rate of CRC cells after PFKFB2 knockdown in alkaline culture medium (pH 7.4) and overexpression in acidic culture medium (pH 6.8). RESULTS PFKFB2 expression was downregulated in acidic culture medium (pH 6.8). In addition, we found PFKFB2 expression decreased in human CRC tissues compared with the adjacent normal tissues. Furthermore, the OS and DFS rate of CRC patients with low PFKFB2 expression was significantly shorter than those of patients with high PFKFB2 expression. Multivariate analysis indicated that low PFKFB2 expression was an independent prognostic factor for both OS and DFS in CRC patients. Moreover, the abilities of migration, invasion, spheroidizing ability, proliferation, and colony formation of CRC cells were significantly increased after depletion of PFKFB2 in alkaline culture medium (pH 7.4) and decreased after overexpression of PFKFB2 in acidic culture medium (pH 6.8) in vitro. Epithelial-mesenchymal transition (EMT) pathway was found and verified involved in the PFKFB2-mediated regulation of metastatic function in CRC cells. Further, glycolysis of CRC cells was significantly elevated after knockdown of PFKFB2 in alkaline culture medium (pH 7.4) and decreased after overexpression of PFKFB2 in acidic culture medium (pH 6.8). CONCLUSION PFKFB2 expression is downregulated in CRC tissues and associated with worse survival for CRC patients. PFKFB2 could inhibit metastasis and the malignant progression of CRC cells by suppressing EMT and glycolysis.
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Affiliation(s)
- Furong Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
- Department of Clinical Research, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
| | - Xiaoli Wei
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
- Department of Medical Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
| | - Zhanhong Chen
- Department of Medical Oncology, The Third Affiliated Hospital of Sun Yat-Sen University, 600 Tianhe Road, Tianhe District, Guangzhou, 510630, China
| | - Yanxing Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
- Department of Medical Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China
| | - Peishan Hu
- Guangdong Institute of Gastroenterology, Department of General Surgery, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital (Guangdong Gastrointestinal and Anal Hospital), Sun Yat-Sen University, Guangzhou, 510655, Guangdong, China.
| | - Ying Jin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China.
- Department of Medical Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China.
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8
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Leng Q, Imtiyaz Z, Woodle MC, Mixson AJ. Delivery of Chemotherapy Agents and Nucleic Acids with pH-Dependent Nanoparticles. Pharmaceutics 2023; 15:1482. [PMID: 37242725 PMCID: PMC10222096 DOI: 10.3390/pharmaceutics15051482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/18/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
With less than one percent of systemically injected nanoparticles accumulating in tumors, several novel approaches have been spurred to direct and release the therapy in or near tumors. One such approach depends on the acidic pH of the extracellular matrix and endosomes of the tumor. With an average pH of 6.8, the extracellular tumor matrix provides a gradient for pH-responsive particles to accumulate, enabling greater specificity. Upon uptake by tumor cells, nanoparticles are further exposed to lower pHs, reaching a pH of 5 in late endosomes. Based on these two acidic environments in the tumor, various pH-dependent targeting strategies have been employed to release chemotherapy or the combination of chemotherapy and nucleic acids from macromolecules such as the keratin protein or polymeric nanoparticles. We will review these release strategies, including pH-sensitive linkages between the carrier and hydrophobic chemotherapy agent, the protonation and disruption of polymeric nanoparticles, an amalgam of these first two approaches, and the release of polymers shielding drug-loaded nanoparticles. While several pH-sensitive strategies have demonstrated marked antitumor efficacy in preclinical trials, many studies are early in their development with several obstacles that may limit their clinical use.
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Affiliation(s)
- Qixin Leng
- Department of Pathology, University Maryland School of Medicine, University of Maryland, 10 S. Pine St., Baltimore, MD 21201, USA (Z.I.)
| | - Zuha Imtiyaz
- Department of Pathology, University Maryland School of Medicine, University of Maryland, 10 S. Pine St., Baltimore, MD 21201, USA (Z.I.)
| | | | - A. James Mixson
- Department of Pathology, University Maryland School of Medicine, University of Maryland, 10 S. Pine St., Baltimore, MD 21201, USA (Z.I.)
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Altered distribution and localization of organellar Na +/H + exchangers in postmortem schizophrenia dorsolateral prefrontal cortex. Transl Psychiatry 2023; 13:34. [PMID: 36732328 PMCID: PMC9895429 DOI: 10.1038/s41398-023-02336-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023] Open
Abstract
Schizophrenia is a complex and multifactorial disorder associated with altered neurotransmission as well as numerous signaling pathway and protein trafficking disruptions. The pH of intracellular organelles involved in protein trafficking is tightly regulated and impacts their functioning. The SLC9A family of Na+/H+ exchangers (NHEs) plays a fundamental role in cellular and intracellular pH homeostasis. Four organellar NHE isoforms (NHE6-NHE9) are targeted to intracellular organelles involved in protein trafficking. Increased interactions between organellar NHEs and receptor of activated protein C kinase 1 (RACK1) can lead to redistribution of NHEs to the plasma membrane and hyperacidification of target organelles. Given their role in organelle pH regulation, altered expression and/or localization of organellar NHEs could be an underlying cellular mechanism contributing to abnormal intracellular trafficking and disrupted neurotransmitter systems in schizophrenia. We thus characterized organellar NHE expression, co-immunoprecipitation with RACK1, and Triton X-114 (TX-114) phase partitioning in dorsolateral prefrontal cortex of 25 schizophrenia and 25 comparison subjects by Western blot analysis. In schizophrenia after controlling for subject age at time of death, postmortem interval, tissue pH, and sex, there was significantly decreased total expression of NHE8, decreased co-immunoprecipitation of NHE8 (64%) and NHE9 (56%) with RACK1, and increased TX-114 detergent phase partitioning of NHE6 (283%), NHE9 (75%), and RACK1 (367%). Importantly, none of these dependent measures was significantly impacted when comparing those in the schizophrenia group on antipsychotics to those off of antipsychotics for at least 6 weeks at their time of death and none of these same proteins were affected in rats chronically treated with haloperidol. In summary, we characterized organellar NHE expression and distribution in schizophrenia DLPFC and identified abnormalities that could represent a novel mechanism contributing to disruptions in protein trafficking and neurotransmission in schizophrenia.
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10
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Wang X, Wu R, Zhai P, Liu Z, Xia R, Zhang Z, Qin X, Li C, Chen W, Li J, Zhang J. Hypoxia promotes EV secretion by impairing lysosomal homeostasis in HNSCC through negative regulation of ATP6V1A by HIF-1α. J Extracell Vesicles 2023; 12:e12310. [PMID: 36748335 PMCID: PMC9903130 DOI: 10.1002/jev2.12310] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/04/2023] [Accepted: 01/26/2023] [Indexed: 02/08/2023] Open
Abstract
Tumour cells under hypoxia tend to modulate the number and contents of extracellular vesicles (EVs) to regulate the tumour microenvironment (TME) and thus promote tumour progression. However, the mechanism of how hypoxia influences the secretion of EVs remains to be elucidated. Here, we confirm the increased production of EVs in head and neck squamous cell carcinoma (HNSCC) cells under hypoxia, where endosome-derived EVs are the main subtype affected by insufficient O2 . The accumulation of hypoxia-inducible factor-1α (HIF-1α) under hypoxia directly downregulates the expression of ATP6V1A, which is pivotal to maintain the homeostasis of lysosomes. Subsequently, impaired lysosomal degradation contributes to the reduced fusion of multivesicular bodies (MVBs) with lysosomes and enables the secretion of intraluminal vesicles (ILVs) as EVs. These findings establish a HIF-1α-regulated lysosomal dysfunction-EV release axis and provide an exquisite framework to better understand EV biogenesis.
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Affiliation(s)
- Xiaoning Wang
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Ruoyi Wu
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Peisong Zhai
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Zheqi Liu
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Ronghui Xia
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
| | - Zhen Zhang
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Xing Qin
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Chuwen Li
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Wantao Chen
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyNational Clinical Research Center of StomatologyShanghaiPRChina
| | - Jiang Li
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
| | - Jianjun Zhang
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
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11
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Amin MU, Ali S, Ali MY, Fuhrmann DC, Tariq I, Seitz BS, Preis E, Brüßler J, Brüne B, Bakowsky U. Co-delivery of carbonic anhydrase IX inhibitor and doxorubicin as a promising approach to address hypoxia-induced chemoresistance. Drug Deliv 2022; 29:2072-2085. [PMID: 35848469 PMCID: PMC9297722 DOI: 10.1080/10717544.2022.2092234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Hypoxia, an oxygen-deprived condition of the tumor, is one of the major reasons for resistance to chemotherapy. Carbonic anhydrases are generally involved in pH homeostasis in normal conditions, but in solid tumors having a strong relation with hypoxia, the carbonic anhydrase IX (CA-IX) enzyme is overexpressed and results in an extracellular acidic environment. For most weakly basic anticancer drugs, including doxorubicin (Dox), the ionization in an acidic environment limits their cellular uptake, and consequently, the tumor exposure to the drug at sub-therapeutic concentration comes out as chemoresistance. Herein, a combined drug delivery system of liposomes and mesoporous silica nanoparticles (MSNPs) was developed for the co-delivery of the CA-IX enzyme inhibitor and Dox in hypoxic condition. The unique structure of MSNPs with higher surface area was utilized for higher drug loading and sustained release of Dox. Additionally, the biocompatible nature of liposomal coating as a second loading site for the CA-IX enzyme inhibitor has provided gatekeeping effects at pore opening to avoid premature drug release. Lipid coated MSNPs as a co-delivery system for Dox and the CA-IX inhibitor have synergistic cytotoxic effects against MDA-MB 231 breast cancer cells in hypoxic conditions. These findings assure the potential of this drug delivery system to overcome hypoxia-related chemoresistance.
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Affiliation(s)
- Muhammad Umair Amin
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany
| | - Sajid Ali
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany.,Department of Chemistry, Angström Laboratory, Uppsala University, Uppsala, Sweden
| | - Muhammad Yasir Ali
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany.,Faculty of Pharmaceutical Sciences, GC University Faisalabad, Faisalabad, Pakistan
| | - Dominik C Fuhrmann
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Imran Tariq
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany.,Punjab University College of Pharmacy, University of Punjab, Lahore, Pakistan
| | - Benjamin S Seitz
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany
| | - Eduard Preis
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany
| | - Jana Brüßler
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Marburg, Germany
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12
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Charbonneau M, Harper K, Brochu-Gaudreau K, Perreault A, McDonald PP, Ekindi-Ndongo N, Jeldres C, Dubois CM. Establishment of a ccRCC patient-derived chick chorioallantoic membrane model for drug testing. Front Med (Lausanne) 2022; 9:1003914. [PMID: 36275794 PMCID: PMC9582329 DOI: 10.3389/fmed.2022.1003914] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is an aggressive subtype of renal cell carcinoma accounting for the majority of deaths in kidney cancer patients. Advanced ccRCC has a high mortality rate as most patients progress and develop resistance to currently approved targeted therapies, highlighting the ongoing need for adequate drug testing models to develop novel therapies. Current animal models are expensive and time-consuming. In this study, we investigated the use of the chick chorioallantoic membrane (CAM), a rapid and cost-effective model, as a complementary drug testing model for ccRCC. Our results indicated that tumor samples from ccRCC patients can be successfully cultivated on the chick chorioallantoic membrane (CAM) within 7 days while retaining their histopathological characteristics. Furthermore, treatment of ccRCC xenografts with sunitinib, a tyrosine kinase inhibitor used for the treatment of metastatic RCC, allowed us to evaluate differential responses of individual patients. Our results indicate that the CAM model is a complementary in vivo model that allows for rapid and cost-effective evaluation of ccRCC patient response to drug therapy. Therefore, this model has the potential to become a useful platform for preclinical evaluation of new targeted therapies for the treatment of ccRCC.
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Affiliation(s)
- Martine Charbonneau
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Kelly Harper
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Karine Brochu-Gaudreau
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Alexis Perreault
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | | | | | - Claudio Jeldres
- Division of Urology, Department of Surgery, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Claire M. Dubois
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC, Canada,*Correspondence: Claire M. Dubois
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13
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Chen P, Yang W, Hong T, Miyazaki T, Dirisala A, Kataoka K, Cabral H. Nanocarriers escaping from hyperacidified endo/lysosomes in cancer cells allow tumor-targeted intracellular delivery of antibodies to therapeutically inhibit c-MYC. Biomaterials 2022; 288:121748. [PMID: 36038419 DOI: 10.1016/j.biomaterials.2022.121748] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/09/2022] [Accepted: 08/16/2022] [Indexed: 11/02/2022]
Abstract
Intracellular protein delivery is a powerful strategy for developing innovative therapeutics. Nanocarriers present great potential to deliver proteins inside cells by promoting cellular uptake and overcoming entrapment and degradation in acidic endo/lysosomal compartments. Thus, because cytosolic access is essential for eliciting the function of proteins, significant efforts have been dedicated to engineering nanocarriers with maximal endosomal escape regardless of the cell type. On the other hand, controlling the ability of nanocarriers to escape from the endo/lysosomal compartments of particular cells may offer the opportunity for enhancing delivery precision. To test this hypothesis, we developed pH-sensitive polymeric nanocarriers with adjustable endosomal escape potency for selectively reaching the cytosol of defined cancer cells with dysregulated endo/lysosomal acidification. By loading antibodies against nuclear pore complex in the nanocarriers, we demonstrated the selective delivery into the cytosol and subsequent nucleus targeting of cancer cells rather than non-cancerous cells both in vitro and in vivo. Systemically injected nanocarriers loading anti-c-MYC antibodies suppressed c-MYC in solid tumors and inhibit tumor growth without side effects, confirming the therapeutic potential of our approach. These results indicated that regulating the ability of nanocarriers to escape from endo/lysosomal compartments in particular cells is a practical approach for gaining delivery specificity.
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Affiliation(s)
- Pengwen Chen
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Wenqian Yang
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Taehun Hong
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takuya Miyazaki
- Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina City, Kanagawa, 243-0435, Japan
| | - Anjaneyulu Dirisala
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan
| | - Kazunori Kataoka
- Innovation Center of Nanomedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan.
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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14
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Roles of lncRNA LVBU in regulating urea cycle/polyamine synthesis axis to promote colorectal carcinoma progression. Oncogene 2022; 41:4231-4243. [PMID: 35906392 PMCID: PMC9439952 DOI: 10.1038/s41388-022-02413-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 07/03/2022] [Accepted: 07/07/2022] [Indexed: 11/08/2022]
Abstract
Altered expression of Urea Cycle (UC) enzymes occurs in many tumors, resulting a metabolic hallmark termed as UC dysregulation. Polyamines are synthesized from ornithine, and polyamine synthetic genes are elevated in various tumors. However, the underlying deregulations of UC/ polyamine synthesis in cancer remain elusive. Here, we characterized a hypoxia-induced lncRNA LVBU (lncRNA regulation via BCL6/urea cycle) that is highly expressed in colorectal cancer (CRC) and correlates with poor cancer prognosis. Increased LVBU expression promoted CRC cells proliferation, foci formation and tumorigenesis. Further, LVBU regulates urea cycle and polyamine synthesis through BCL6, a negative regulator of p53. Mechanistically, overexpression of LVBU competitively bound miR-10a/miR-34c to protect BCL6 from miR-10a/34c-mediated degradation, which in turn allows BCL6 to block p53-mediated suppression of genes (arginase1 ARG1, ornithine transcarbamylase OTC, ornithine decarboxylase 1 ODC1) involved in UC/polyamine synthesis. Significantly, ODC1 inhibitor attenuated the growth of patient derived xenografts (PDX) that sustain high LVBU levels. Taken together, elevated LVBU can regulate BCL6-p53 signaling axis for systemic UC/polyamine synthesis reprogramming and confers a predilection toward CRC development. Our data demonstrates that further drug development and clinical evaluation of inhibiting UC/polyamine synthesis are warranted for CRC patients with high expression of LVBU.
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15
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Hoskin V, Ghaffari A, Laight BJ, SenGupta S, Madarnas Y, Nicol CJB, Elliott BE, Varma S, Greer PA. Targeting the Ezrin Adaptor Protein Sensitizes Metastatic Breast Cancer Cells to Chemotherapy and Reduces Neoadjuvant Therapy-induced Metastasis. CANCER RESEARCH COMMUNICATIONS 2022; 2:456-470. [PMID: 36923551 PMCID: PMC10010290 DOI: 10.1158/2767-9764.crc-21-0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 05/05/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
The main cause of cancer-associated deaths is the spread of cancer cells to distant organs. Despite its success in the primary tumor setting, modern chemotherapeutic strategies are rendered ineffective at treating metastatic disease, largely due to the development of resistance. The adaptor protein ezrin has been shown to promote cancer metastasis in multiple preclinical models and is associated with poor prognosis in several cancer types, including breast cancer. Ezrin promotes pro-survival signaling, particularly in disseminated cancer cells, to facilitate metastatic outgrowth. However, the role of ezrin in breast cancer chemoresistance is not fully known. In this study, we show that upregulating or downregulating ezrin expression modifies the sensitivity of breast cancer cells to doxorubicin and docetaxel treatment in vitro and is associated with changes in PI3K/Akt and NFκB pathway activation. In addition, we tested the effects of systemic treatment with a small-molecule ezrin inhibitor, NSC668394, on lung metastatic burden in vivo as a monotherapy, or in combination with anthracycline- or taxane-based chemotherapy treatment. We show that anti-ezrin treatment alone reduces metastatic burden and markedly sensitizes metastases to doxorubicin or docetaxel in neoadjuvant as well as neoadjuvant plus adjuvant treatment models. Taken together, our findings demonstrate the impact of anti-ezrin treatment in modulating response to chemotherapy in breast cancer cells as well as the efficacy of anti-ezrin treatment in combination with chemotherapy at reducing metastatic burden. Significance This work provides preclinical evidence for combining anti-ezrin treatment with chemotherapy as a novel strategy for effectively targeting metastasis, particularly in a neoadjuvant treatment setting.
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Affiliation(s)
- Victoria Hoskin
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
| | - Abdi Ghaffari
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
| | - Brian J Laight
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
| | - Sandip SenGupta
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | | | - Christopher J B Nicol
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
| | - Bruce E Elliott
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
| | - Sonal Varma
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Peter A Greer
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.,Division of Cancer Biology and Genetics, Queen's Cancer Research Institute; Kingston, Ontario, Canada
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16
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Hypoxia Selectively Increases a SMAD3 Signaling Axis to Promote Cancer Cell Invasion. Cancers (Basel) 2022; 14:cancers14112751. [PMID: 35681731 PMCID: PMC9179584 DOI: 10.3390/cancers14112751] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 05/30/2022] [Indexed: 01/27/2023] Open
Abstract
Transforming growth factor β (TGFβ) plays a paradoxical role in cancer, first inhibiting then promoting its progression, a duality that poses a real challenge for the development of effective TGFβ-targeted therapies. The major TGFβ downstream effectors, SMAD2 and SMAD3, display both distinct and overlapping functions and accumulating evidence suggests that their activation ratio may contribute to the dual effect of TGFβ. However, the mechanisms responsible for their selective activation remain poorly understood. Here, we provide experimental evidence that hypoxia induces the pro-invasive arm of TGFβ signaling through a selective increase in SMAD3 interaction with SMAD-Anchor for Receptor Activation (SARA). This event relies on HDAC6-dependent SMAD3 bioavailability, as well as increased SARA recruitment to EEA1+ endosomes. A motility gene expression study indicated that SMAD3 selectively increased the expression of ITGB2 and VIM, two genes that were found to be implicated in hypoxia-induced cell invasion and associated with tumor progression and metastasis in cohorts of cancer patients. Furthermore, CAM xenograft assays show the significant benefit of selective inhibition of the SMAD3 signaling pathway as opposed to global TGFβ inhibition in preventing tumor progression. Overall, these results suggest that fine-tuning of the pro-invasive HDAC6-SARA-SMAD3 axis could be a better strategy towards effective cancer treatments.
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17
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Real-time monitoring the efficacy of 7-hydroxycoumarin to cells cultured on microfluidics in different extracellular pH environments by chip-mass spectrometry. Talanta 2022; 243:123331. [DOI: 10.1016/j.talanta.2022.123331] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 02/04/2023]
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18
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Zhang D, You Y, Xu Y, Cheng Q, Xiao Z, Chen T, Shi C, Luo L. Facile synthesis of near-infrared responsive on-demand oxygen releasing nanoplatform for precise MRI-guided theranostics of hypoxia-induced tumor chemoresistance and metastasis in triple negative breast cancer. J Nanobiotechnology 2022; 20:104. [PMID: 35246149 PMCID: PMC8896283 DOI: 10.1186/s12951-022-01294-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/03/2022] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Hypoxia is an important factor that contributes to chemoresistance and metastasis in triple negative breast cancer (TNBC), and alleviating hypoxia microenvironment can enhance the anti-tumor efficacy and also inhibit tumor invasion. METHODS A near-infrared (NIR) responsive on-demand oxygen releasing nanoplatform (O2-PPSiI) was successfully synthesized by a two-stage self-assembly process to overcome the hypoxia-induced tumor chemoresistance and metastasis. We embedded drug-loaded poly (lactic-co-glycolic acid) cores into an ultrathin silica shell attached with paramagnetic Gd-DTPA to develop a Magnetic Resonance Imaging (MRI)-guided NIR-responsive on-demand drug releasing nanosystem, where indocyanine green was used as a photothermal converter to trigger the oxygen and drug release under NIR irradiation. RESULTS The near-infrared responsive on-demand oxygen releasing nanoplatform O2-PPSiI was chemically synthesized in this study by a two-stage self-assembly process, which could deliver oxygen and release it under NIR irradiation to relieve hypoxia, improving the therapeutic effect of chemotherapy and suppressed tumor metastasis. This smart design achieves the following advantages: (i) the O2 in this nanosystem can be precisely released by an NIR-responsive silica shell rupture; (ii) the dynamic biodistribution process of O2-PPSiI was monitored in real-time and quantitatively analyzed via sensitive MR imaging of the tumor; (iii) O2-PPSiI could alleviate tumor hypoxia by releasing O2 within the tumor upon NIR laser excitation; (iv) The migration and invasion abilities of the TNBC tumor were weakened by inhibiting the process of EMT as a result of the synergistic therapy of NIR-triggered O2-PPSiI. CONCLUSIONS Our work proposes a smart tactic guided by MRI and presents a valid approach for the reasonable design of NIR-responsive on-demand drug-releasing nanomedicine systems for precise theranostics in TNBC.
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Affiliation(s)
- Dong Zhang
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
- The Shunde Affiliated Hospital, Jinan University, Foshan, 528300, China
| | - Yuanyuan You
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People's Hospital, Zhuhai Hospital Affiliated With Jinan University, Jinan University, Zhuhai, 519000, Guangdong, People's Republic of China
| | - Yuan Xu
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
| | - Qingqing Cheng
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
| | - Zeyu Xiao
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
| | - Tianfeng Chen
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China.
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai People's Hospital, Zhuhai Hospital Affiliated With Jinan University, Jinan University, Zhuhai, 519000, Guangdong, People's Republic of China.
| | - Changzheng Shi
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China.
| | - Liangping Luo
- Department of Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, China.
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19
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Ko M, Makena MR, Schiapparelli P, Suarez-Meade P, Mekile AX, Lal B, Lopez-Bertoni H, Kozielski KL, Green JJ, Laterra J, Quiñones-Hinojosa A, Rao R. The endosomal pH regulator NHE9 is a driver of stemness in glioblastoma. PNAS NEXUS 2022; 1:pgac013. [PMID: 35387234 PMCID: PMC8974362 DOI: 10.1093/pnasnexus/pgac013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 09/26/2021] [Accepted: 02/14/2022] [Indexed: 11/25/2022]
Abstract
A small population of self-renewing stem cells initiate tumors and maintain therapeutic resistance in glioblastoma (GBM). Given the limited treatment options and dismal prognosis for this disease, there is urgent need to identify drivers of stem cells that could be druggable targets. Previous work showed that the endosomal pH regulator NHE9 is upregulated in GBM and correlates with worse survival prognosis. Here, we probed for aberrant signaling pathways in patient-derived GBM cells and found that NHE9 increases cell surface expression and phosphorylation of multiple receptor tyrosine kinases (RTKs) by promoting their escape from lysosomal degradation. Downstream of NHE9-mediated receptor activation, oncogenic signaling pathways converged on the JAK2-STAT3 transduction axis to induce pluripotency genes Oct4 and Nanog and suppress markers of glial differentiation. We used both genetic and chemical approaches to query the role of endosomal pH in GBM phenotypes. Loss-of-function mutations in NHE9 that failed to alkalinize endosomal lumen did not increase self-renewal capacity of gliomaspheres in vitro. However, monensin, a chemical mimetic of Na+/H+ exchanger activity, and the H+ pump inhibitor bafilomycin bypassed NHE9 to directly alkalinize the endosomal lumen resulting in stabilization of RTKs and induction of Oct4 and Nanog. Using orthotopic models of primary GBM cells we found that NHE9 increased tumor initiation in vivo. We propose that NHE9 initiates inside-out signaling from the endosomal lumen, distinct from the established effects of cytosolic and extracellular pH on tumorigenesis. Endosomal pH may be an attractive therapeutic target that diminishes stemness in GBM, agnostic of specific receptor subtype.
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Affiliation(s)
- Myungjun Ko
- Department of Physiology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Neurosurgery, Mayo Clinic College of Medicine, Jacksonville, FL, 32224, USA
| | - Monish R Makena
- Department of Physiology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Paula Schiapparelli
- Department of Neurosurgery, Mayo Clinic College of Medicine, Jacksonville, FL, 32224, USA
| | - Paola Suarez-Meade
- Department of Neurosurgery, Mayo Clinic College of Medicine, Jacksonville, FL, 32224, USA
| | - Allatah X Mekile
- Department of Physiology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Bachchu Lal
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Hernando Lopez-Bertoni
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Kristen L Kozielski
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany
| | - Jordan J Green
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - John Laterra
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | | | - Rajini Rao
- Department of Physiology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
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20
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Huntington KE, Louie A, Zhou L, Seyhan AA, Maxwell AWP, El-Deiry WS. Colorectal cancer extracellular acidosis decreases immune cell killing and is partially ameliorated by pH-modulating agents that modify tumor cell cytokine profiles. Am J Cancer Res 2022; 12:138-151. [PMID: 35141009 PMCID: PMC8822272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 10/12/2021] [Indexed: 06/14/2023] Open
Abstract
Tumor cells upregulate myriad proteins that are important for pH regulation, resulting in the acidification of the extracellular tumor microenvironment (TME). Abnormal pH is known to dampen immune function, resulting in a worsened anti-tumor immune response. Understanding how extrinsic alterations in pH modulate the interactions between immune cells and tumors cells will help elucidate opportunities for new therapeutic approaches. We observed that pH impacts the function of immune cells, both natural killer (NK) and T cells, which is relevant in the context of a highly acidic TME. Decreased NK and T cell activity was correlated with decreasing pH in a co-culture immune cell-mediated tumor cell-killing assay. The addition of pH-modulating drugs cariporide, lansoprazole, and acetazolamide to the co-culture assay was able to partially mitigate this dampened immune cell function. Treatment of colorectal cancer (CRC) cells with NHE1 inhibitor cariporide increased CRC cell-secreted cytokines involved in immune cell recruitment and activation and decreased cytokines involved in epithelial-mesenchymal transition (EMT). Cariporide treatment also decreased CRC cell shed TRAIL-R2, TRAIL-R3, and PD-L1 which is relevant in the context of immunotherapy. These experiments can help inform future investigations into how the pH of the tumor microenvironment may be extrinsically modulated to improve anti-tumor immune response in solid tumors such as colorectal cancer.
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Affiliation(s)
- Kelsey E Huntington
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- The Joint Program in Cancer Biology, Brown University and Lifespan Health SystemProvidence, RI 02912, USA
- Cancer Center at Brown University, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Pathobiology Graduate Program, Brown UniversityProvidence, RI 02912, USA
| | - Anna Louie
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- The Joint Program in Cancer Biology, Brown University and Lifespan Health SystemProvidence, RI 02912, USA
- Cancer Center at Brown University, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Surgery, Lifespan Health System and Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
| | - Lanlan Zhou
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- The Joint Program in Cancer Biology, Brown University and Lifespan Health SystemProvidence, RI 02912, USA
- Cancer Center at Brown University, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
| | - Attila A Seyhan
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- The Joint Program in Cancer Biology, Brown University and Lifespan Health SystemProvidence, RI 02912, USA
- Cancer Center at Brown University, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
| | - Aaron WP Maxwell
- Department of Diagnostic Imaging, Lifespan Health System and Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
| | - Wafik S El-Deiry
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- The Joint Program in Cancer Biology, Brown University and Lifespan Health SystemProvidence, RI 02912, USA
- Cancer Center at Brown University, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown UniversityProvidence, RI 02912, USA
- Pathobiology Graduate Program, Brown UniversityProvidence, RI 02912, USA
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21
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Pohlkamp T, Xian X, Wong CH, Durakoglugil MS, Werthmann GC, Saido TC, Evers BM, White CL, Connor J, Hammer RE, Herz J. NHE6 depletion corrects ApoE4-mediated synaptic impairments and reduces amyloid plaque load. eLife 2021; 10:72034. [PMID: 34617884 PMCID: PMC8547963 DOI: 10.7554/elife.72034] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/19/2021] [Indexed: 11/13/2022] Open
Abstract
Apolipoprotein E4 (ApoE4) is the most important and prevalent risk factor for late-onset Alzheimer’s disease (AD). The isoelectric point of ApoE4 matches the pH of the early endosome (EE), causing its delayed dissociation from ApoE receptors and hence impaired endolysosomal trafficking, disruption of synaptic homeostasis, and reduced amyloid clearance. We have shown that enhancing endosomal acidification by inhibiting the EE-specific sodium-hydrogen exchanger 6 (NHE6) restores vesicular trafficking and normalizes synaptic homeostasis. Remarkably and unexpectedly, loss of NHE6 (encoded by the gene Slc9a6) in mice effectively suppressed amyloid deposition even in the absence of ApoE4, suggesting that accelerated acidification of EEs caused by the absence of NHE6 occludes the effect of ApoE on amyloid plaque formation. NHE6 suppression or inhibition may thus be a universal, ApoE-independent approach to prevent amyloid buildup in the brain. These findings suggest a novel therapeutic approach for the prevention of AD by which partial NHE6 inhibition reverses the ApoE4-induced endolysosomal trafficking defect and reduces plaque load.
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Affiliation(s)
- Theresa Pohlkamp
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States
| | - Xunde Xian
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States.,Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University, Beijing, China
| | - Connie H Wong
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States
| | - Murat S Durakoglugil
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States
| | - Gordon Chandler Werthmann
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States
| | - Takaomi C Saido
- Laboratory for Proteolytic Neuroscience, Riken Center for Brain Science, Wako, Japan
| | - Bret M Evers
- Center for Translational Neurodegeneration Research, Dallas, United States
| | - Charles L White
- Pathology, University of Texas Southwestern Medical Center, Dallas, United States
| | - Jade Connor
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States
| | - Robert E Hammer
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, United States
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, United States.,Center for Translational Neurodegeneration Research, Dallas, United States.,Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, United States.,Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, United States
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22
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Xu Z, Zhang B, Liao Z, Gou S. A gemcitabine-based conjugate with enhanced antitumor efficacy by suppressing HIF-1α expression under hypoxia. Bioorg Med Chem 2021; 41:116214. [PMID: 33992863 DOI: 10.1016/j.bmc.2021.116214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 10/21/2022]
Abstract
Hypoxia is one of the unique features of tumor physiology. Hypoxia inducible factor (HIF-1α), as a major transcription factor in response to hypoxia, has been considered as a promising tumor-specific target for anticancer therapy. The formation of a hypoxic microenvironment in tumors can decrease the curative effect of cytotoxic chemotherapeutic drugs. To promote the antitumor efficacy of chemotherapy by suppressing hypoxia, we designed and prepared a novel gemcitabine-based drug conjugate (GEM-5) containing a HIF-1α inhibitor (YC-1). As expected, GEM-5 showed excellent antiproliferative activity (IC50 = 0.03 μΜ under hypoxia) and remarkably induced the apoptosis of A2780 cells in vitro. Additionally, western blot analysis demonstrated that GEM-5 significantly down-regulated the expression of HIF-1α and up-regulated the expression of tumor suppressor p53. More importantly, GEM-5 effectively inhibited tumor growth in the A2780 xenograft mouse model and significantly ameliorated tumor hypoxia in vivo. This novel, simple, and effective strategy for overcoming tumor hypoxia and enhancing the antitumor effect of chemotherapeutic drugs has great potential in cancer therapy.
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Affiliation(s)
- Zichen Xu
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Institute of Nanjing Junruo Biomedicine, Nanjing 211100, China
| | - Bin Zhang
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Zhixin Liao
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Shaohua Gou
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Institute of Nanjing Junruo Biomedicine, Nanjing 211100, China.
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23
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Ritter M, Bresgen N, Kerschbaum HH. From Pinocytosis to Methuosis-Fluid Consumption as a Risk Factor for Cell Death. Front Cell Dev Biol 2021; 9:651982. [PMID: 34249909 PMCID: PMC8261248 DOI: 10.3389/fcell.2021.651982] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/29/2021] [Indexed: 12/11/2022] Open
Abstract
The volumes of a cell [cell volume (CV)] and its organelles are adjusted by osmoregulatory processes. During pinocytosis, extracellular fluid volume equivalent to its CV is incorporated within an hour and membrane area equivalent to the cell's surface within 30 min. Since neither fluid uptake nor membrane consumption leads to swelling or shrinkage, cells must be equipped with potent volume regulatory mechanisms. Normally, cells respond to outwardly or inwardly directed osmotic gradients by a volume decrease and increase, respectively, i.e., they shrink or swell but then try to recover their CV. However, when a cell death (CD) pathway is triggered, CV persistently decreases in isotonic conditions in apoptosis and it increases in necrosis. One type of CD associated with cell swelling is due to a dysfunctional pinocytosis. Methuosis, a non-apoptotic CD phenotype, occurs when cells accumulate too much fluid by macropinocytosis. In contrast to functional pinocytosis, in methuosis, macropinosomes neither recycle nor fuse with lysosomes but with each other to form giant vacuoles, which finally cause rupture of the plasma membrane (PM). Understanding methuosis longs for the understanding of the ionic mechanisms of cell volume regulation (CVR) and vesicular volume regulation (VVR). In nascent macropinosomes, ion channels and transporters are derived from the PM. Along trafficking from the PM to the perinuclear area, the equipment of channels and transporters of the vesicle membrane changes by retrieval, addition, and recycling from and back to the PM, causing profound changes in vesicular ion concentrations, acidification, and-most importantly-shrinkage of the macropinosome, which is indispensable for its proper targeting and cargo processing. In this review, we discuss ion and water transport mechanisms with respect to CVR and VVR and with special emphasis on pinocytosis and methuosis. We describe various aspects of the complex mutual interplay between extracellular and intracellular ions and ion gradients, the PM and vesicular membrane, phosphoinositides, monomeric G proteins and their targets, as well as the submembranous cytoskeleton. Our aim is to highlight important cellular mechanisms, components, and processes that may lead to methuotic CD upon their derangement.
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Affiliation(s)
- Markus Ritter
- Center for Physiology, Pathophysiology and Biophysics, Institute for Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria
- Institute for Physiology and Pathophysiology, Paracelsus Medical University, Nuremberg, Germany
- Gastein Research Institute, Paracelsus Medical University, Salzburg, Austria
- Ludwig Boltzmann Institute for Arthritis und Rehabilitation, Salzburg, Austria
- Kathmandu University School of Medical Sciences, Dhulikhel, Nepal
| | - Nikolaus Bresgen
- Department of Biosciences, University of Salzburg, Salzburg, Austria
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24
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SCAMP5 plays a critical role in axonal trafficking and synaptic localization of NHE6 to adjust quantal size at glutamatergic synapses. Proc Natl Acad Sci U S A 2021; 118:2011371118. [PMID: 33372133 DOI: 10.1073/pnas.2011371118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Glutamate uptake into synaptic vesicles (SVs) depends on cation/H+ exchange activity, which converts the chemical gradient (ΔpH) into membrane potential (Δψ) across the SV membrane at the presynaptic terminals. Thus, the proper recruitment of cation/H+ exchanger to SVs is important in determining glutamate quantal size, yet little is known about its localization mechanism. Here, we found that secretory carrier membrane protein 5 (SCAMP5) interacted with the cation/H+ exchanger NHE6, and this interaction regulated NHE6 recruitment to glutamatergic presynaptic terminals. Protein-protein interaction analysis with truncated constructs revealed that the 2/3 loop domain of SCAMP5 is directly associated with the C-terminal region of NHE6. The use of optical imaging and electrophysiological recording showed that small hairpin RNA-mediated knockdown (KD) of SCAMP5 or perturbation of SCAMP5/NHE6 interaction markedly inhibited axonal trafficking and the presynaptic localization of NHE6, leading to hyperacidification of SVs and a reduction in the quantal size of glutamate release. Knockout of NHE6 occluded the effect of SCAMP5 KD without causing additional defects. Together, our results reveal that as a key regulator of axonal trafficking and synaptic localization of NHE6, SCAMP5 could adjust presynaptic strength by regulating quantal size at glutamatergic synapses. Since both proteins are autism candidate genes, the reduced quantal size by interrupting their interaction may underscore synaptic dysfunction observed in autism.
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25
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Harper K, Yatsyna A, Charbonneau M, Brochu-Gaudreau K, Perreault A, Jeldres C, McDonald PP, Dubois CM. The Chicken Chorioallantoic Membrane Tumor Assay as a Relevant In Vivo Model to Study the Impact of Hypoxia on Tumor Progression and Metastasis. Cancers (Basel) 2021; 13:cancers13051093. [PMID: 33806378 PMCID: PMC7961795 DOI: 10.3390/cancers13051093] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/26/2022] Open
Abstract
Simple Summary Hypoxia is a negative prognostic factor known to be closely associated with tumor progression and metastasis. However, existing animal models with the ability to recreate the tumor hypoxic microenvironment have disadvantages that limit our ability to understand and target this pathological condition. The chicken ChorioAllantoic Membrane (CAM) assay is increasingly used as a rapid cost-effective drug-testing model that recapitulates many aspects of human cancers. Whether this model recreates the hypoxic environment of tumors remains understudied. Here, we demonstrate that the CAM model effectively supports the development of hypoxic zones in a variety of tumor types. Treatment of tumors with angiogenesis inhibitors or inducers significantly modulated the formation of hypoxic zones as well as tumor progression and metastasis. Our findings suggest that the CAM-based tumor model is a relevant in vivo platform to further understand the pathological responses to hypoxia and test therapeutic interventions aimed at targeting hypoxic cancers. Abstract Hypoxia in the tumor microenvironment is a negative prognostic factor associated with tumor progression and metastasis, and therefore represents an attractive therapeutic target for anti-tumor therapy. To test the effectiveness of novel hypoxia-targeting drugs, appropriate preclinical models that recreate tumor hypoxia are essential. The chicken ChorioAllantoic Membrane (CAM) assay is increasingly used as a rapid cost-effective in vivo drug-testing platform that recapitulates many aspects of human cancers. However, it remains to be determined whether this model recreates the hypoxic microenvironment of solid tumors. To detect hypoxia in the CAM model, the hypoxic marker pimonidazole was injected into the vasculature of tumor-bearing CAM, and hypoxia-dependent gene expression was analyzed. We observed that the CAM model effectively supports the development of hypoxic zones in a variety of human tumor cell line-derived and patient’s tumor fragment-derived xenografts. The treatment of both patient and cell line-derived CAM xenografts with modulators of angiogenesis significantly altered the formation of hypoxic zones within the xenografts. Furthermore, the changes in hypoxia translated into modulated levels of chick liver metastasis as measured by Alu-based assay. These findings demonstrate that the CAM xenograft model is a valuable in vivo platform for studying hypoxia that could facilitate the identification and testing of drugs targeting this tumor microenvironment.
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Affiliation(s)
- Kelly Harper
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
| | - Anna Yatsyna
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
| | - Martine Charbonneau
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
| | - Karine Brochu-Gaudreau
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
| | - Alexis Perreault
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
| | - Claudio Jeldres
- Department of Surgery, Division of Urology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada;
| | - Patrick P. McDonald
- Department of Medicine, Pulmonary Division, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada;
| | - Claire M. Dubois
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1H 5H3, Canada; (K.H.); (A.Y.); (M.C.); (K.B.-G.); (A.P.)
- Correspondence:
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Abstract
Extracellular acidification is a well-known driver of tumorigenesis that has been extensively studied. In contrast, the role of endosomal pH is novel and relatively unexplored. There is emerging evidence from a growing number of studies showing that the pH of endosomal compartments controls proliferation, migration, stemness, and sensitivity to chemoradiation therapy in a variety of tumors. Endosomes are a crucial hub, mediating cellular communication with the external environment. By finely regulating the sorting and trafficking of vesicular cargo for degradation or recycling, endosomal pH determines the fate of plasma membrane proteins, lipids, and extracellular signals including growth factor receptors and their ligands. Several critical regulators of endosomal pH have been identified, including multiple isoforms of the family of electroneutral Na+/H+ exchangers (NHE) such as NHE6 and NHE9. Recent studies have shed light on molecular mechanisms linking endosomal pH to cancer malignancy. Manipulating endosomal pH by epigenetic reprogramming, small molecules, or nanoparticles may offer promising new options in cancer therapy. In this review, we summarize evidence linking endosomal pH to cancer, with a focus on the role of endosomal Na+/H+ exchangers and how they affect the prognosis of cancer patients, and also suggest how regulation of endosomal pH may be exploited to develop new cancer therapies.
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27
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Wang S, Zheng H, Zhou L, Cheng F, Liu Z, Zhang H, Zhang Q. Injectable redox and light responsive MnO2 hybrid hydrogel for simultaneous melanoma therapy and multidrug-resistant bacteria-infected wound healing. Biomaterials 2020; 260:120314. [DOI: 10.1016/j.biomaterials.2020.120314] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/09/2020] [Accepted: 08/10/2020] [Indexed: 12/15/2022]
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28
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Khoo TC, Tubbesing K, Rudkouskaya A, Rajoria S, Sharikova A, Barroso M, Khmaladze A. Quantitative label-free imaging of iron-bound transferrin in breast cancer cells and tumors. Redox Biol 2020; 36:101617. [PMID: 32863219 PMCID: PMC7327243 DOI: 10.1016/j.redox.2020.101617] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/02/2020] [Accepted: 06/18/2020] [Indexed: 02/07/2023] Open
Abstract
Transferrin (Tf) is an essential serum protein which delivers iron throughout the body via transferrin-receptor (TfR)-mediated uptake and iron release in early endosomes. Currently, there is no robust method to assay the population of iron-bound Tf in intact cells and tissues. Raman hyperspectral imaging detected spectral peaks that correlated with iron-bound Tf in intact cells and tumor xenografts sections (~1270-1300 cm-1). Iron-bound (holo) and iron-free (apo) human Tf forms were endocytosed by MDAMB231 and T47D human breast cancer cells. The Raman iron-bound Tf peak was identified in cells treated with holo-Tf, but not in cells incubated with apo-Tf. A reduction in the Raman peak intensity between 5 and 30 min of Tf internalization was observed in T47D, but not in MDAMB231, suggesting that T47D can release iron from Tf more efficiently than MDAMB231. MDAMB231 may display a disrupted iron homeostasis due to iron release delays caused by alterations in the pH or ionic milieu of the early endosomes. In summary, we have demonstrated that Raman hyperspectral imaging can be used to identify iron-bound Tf in cell cultures and tumor xenografts and detect iron release behavior of Tf in breast cancer cells.
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Affiliation(s)
- Ting Chean Khoo
- Physics Department, SUNY University at Albany, 1400, Washington Avenue, Albany, NY, USA
| | - Kate Tubbesing
- Department of Molecular and Cellular Physiology, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA
| | - Alena Rudkouskaya
- Department of Molecular and Cellular Physiology, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA
| | - Shilpi Rajoria
- Department of Molecular and Cellular Physiology, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA
| | - Anna Sharikova
- Physics Department, SUNY University at Albany, 1400, Washington Avenue, Albany, NY, USA
| | - Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA.
| | - Alexander Khmaladze
- Physics Department, SUNY University at Albany, 1400, Washington Avenue, Albany, NY, USA.
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29
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Zheng T, Jäättelä M, Liu B. pH gradient reversal fuels cancer progression. Int J Biochem Cell Biol 2020; 125:105796. [DOI: 10.1016/j.biocel.2020.105796] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/19/2020] [Accepted: 06/24/2020] [Indexed: 12/18/2022]
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30
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Gu Y, Zhao Z, Niu G, Zhang H, Wang Y, Kwok RTK, Lam JWY, Tang BZ. Visualizing semipermeability of the cell membrane using a pH-responsive ratiometric AIEgen. Chem Sci 2020; 11:5753-5758. [PMID: 32832051 PMCID: PMC7422962 DOI: 10.1039/d0sc02097d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/14/2020] [Indexed: 12/15/2022] Open
Abstract
In clinical chemotherapy, some basic drugs cannot enter the hydrophobic cell membrane because of ionization in the acidic tumor microenvironment, a phenomenon known as ion trapping. In this study, we developed a method to visualize this ion trapping phenomenon by utilizing a pH-responsive ratiometric AIEgen, dihydro berberine (dhBBR). By observing the intracellular fluorescence of dhBBR, we found that non-ionized dhBBR can enter cells more easily than ionized forms, which is in accordance with the concept of ion trapping. In addition, dhBBR shows superior anti-photobleaching ability to Curcumin thanks to its AIE properties. These results suggest that dhBBR can serve as a bioprobe for ion trapping.
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Affiliation(s)
- Yuan Gu
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Zheng Zhao
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Guangle Niu
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Han Zhang
- Center for Aggregation-Induced Emission , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Yiming Wang
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Ryan T K Kwok
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Jacky W Y Lam
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
| | - Ben Zhong Tang
- Department of Chemical and Biological Engineering , Department of Chemistry , The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China .
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area Hi-tech Park , Nanshan , Shenzhen 518057 , China
- Center for Aggregation-Induced Emission , SCUT-HKUST Joint Research Institute , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
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31
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Becker HM, Deitmer JW. Transport Metabolons and Acid/Base Balance in Tumor Cells. Cancers (Basel) 2020; 12:cancers12040899. [PMID: 32272695 PMCID: PMC7226098 DOI: 10.3390/cancers12040899] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/03/2020] [Accepted: 04/04/2020] [Indexed: 02/07/2023] Open
Abstract
Solid tumors are metabolically highly active tissues, which produce large amounts of acid. The acid/base balance in tumor cells is regulated by the concerted interplay between a variety of membrane transporters and carbonic anhydrases (CAs), which cooperate to produce an alkaline intracellular, and an acidic extracellular, environment, in which cancer cells can outcompete their adjacent host cells. Many acid/base transporters form a structural and functional complex with CAs, coined "transport metabolon". Transport metabolons with bicarbonate transporters require the binding of CA to the transporter and CA enzymatic activity. In cancer cells, these bicarbonate transport metabolons have been attributed a role in pH regulation and cell migration. Another type of transport metabolon is formed between CAs and monocarboxylate transporters, which mediate proton-coupled lactate transport across the cell membrane. In this complex, CAs function as "proton antenna" for the transporter, which mediate the rapid exchange of protons between the transporter and the surroundings. These transport metabolons do not require CA catalytic activity, and support the rapid efflux of lactate and protons from hypoxic cancer cells to allow sustained glycolytic activity and cell proliferation. Due to their prominent role in tumor acid/base regulation and metabolism, transport metabolons might be promising drug targets for new approaches in cancer therapy.
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Affiliation(s)
- Holger M. Becker
- Institute of Physiological Chemistry, University of Veterinary Medicine Hannover, D-30559 Hannover, Germany
- Correspondence:
| | - Joachim W. Deitmer
- Department of Biology, University of Kaiserslautern, D-67653 Kaiserslautern, Germany;
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32
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Li Y, Liu J, Wang Z, Jin J, Liu Y, Chen C, Tang Z. Optimizing Energy Transfer in Nanostructures Enables In Vivo Cancer Lesion Tracking via Near-Infrared Excited Hypoxia Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907718. [PMID: 32091152 DOI: 10.1002/adma.201907718] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/02/2020] [Indexed: 05/18/2023]
Abstract
To explore highly sensitive and low-toxicity techniques for tracking and evaluation of non-small-cell lung cancer (NSCLC), one of the most mortal tumors in the world, it is utterly imperative for doctors to select the appropriate treatment strategies. Herein, developing near-infrared (NIR) excited nanosensors, in which the donor and acceptor pairs within a biological metal-organic framework (bio-MOF) matrix are precisely controlled to rationalize upconversion Förster resonance energy transfer (FRET), is suggested for detecting the O2 concentration inside tumors with reduced signal disturbance and health detriment. Under NIR excitation, as-fabricated core/satellite nanosensors exhibit much improved FRET efficiency and reversible hypoxic response with high sensitivity, which are effective both in vitro and in vivo (zebrafish) for cycling normoxia-hypoxia imaging. Significantly, combined with a reliable preclinical genetically engineered murine model, such nanosensors successfully realize tracking of in vivo NSCLC lesions upon clear and gradient hypoxia signals without apparent long-term biotoxicity, illustrating their exciting potential for efficient NSCLC evaluation and prognosis.
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Affiliation(s)
- Yantao Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
| | - Jiaming Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, No. 19(A) Yuquan Rd, Shijingshan District, Beijing, 100049, P. R. China
| | - Zuochao Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
| | - Jun Jin
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
| | - Yaling Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
| | - Chunying Chen
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, No. 19(A) Yuquan Rd, Shijingshan District, Beijing, 100049, P. R. China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, No. 19(A) Yuquan Rd, Shijingshan District, Beijing, 100049, P. R. China
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33
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Li K, Li M, Luo Z, Mao Y, Yu Y, He Y, Zhou J, Fei Y, Pei Y, Cai K. Overcoming the hypoxia-induced drug resistance in liver tumor by the concurrent use of apigenin and paclitaxel. Biochem Biophys Res Commun 2020; 526:321-327. [PMID: 32220496 DOI: 10.1016/j.bbrc.2020.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 03/01/2020] [Indexed: 01/16/2023]
Abstract
The chemotherapeutic efficacy of paclitaxel against hypoxic tumors is usually unsatisfactory, which is partially due to the so-called hypoxia-induced drug resistance. The mechanism of hypoxia-induced resistance is primarily associated with hypoxia-inducible factor 1α (HIF-1α), which is an oxygen-sensitive transcriptional activator coordinating the cellular response to hypoxia. Apigenin is a natural occurring HIF-1α inhibitor that can suppress the expression of HIF-1α through multiple pathways and reverse the hypoxia-induced resistance found in cancer cells. Here we report that the use of apigenin can suppress the HIF-1α expression in hypoxic tumors through the simultaneous inhibition of the AKT/p-AKT pathway and HSP90, which is beneficial for enhancing the anticancer activity of the co-administered paclitaxel. The potential synergistic effect of apigenin and paclitaxel was further validated on HepG2 cell line and tumor-bearing mouse models.
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Affiliation(s)
- Ke Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Menghuan Li
- School of Life Science, Chongqing University, Chongqing, 401331, China
| | - Zhong Luo
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China; School of Life Science, Chongqing University, Chongqing, 401331, China.
| | - Yulan Mao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Yonglin Yu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Ye He
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Jun Zhou
- School of Life Science, Chongqing University, Chongqing, 401331, China
| | - Yang Fei
- School of Life Science, Chongqing University, Chongqing, 401331, China
| | - Yuxia Pei
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
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Hallal S, Russell BP, Wei H, Lee MYT, Toon CW, Sy J, Shivalingam B, Buckland ME, Kaufman KL. Extracellular Vesicles from Neurosurgical Aspirates Identifies Chaperonin Containing TCP1 Subunit 6A as a Potential Glioblastoma Biomarker with Prognostic Significance. Proteomics 2020; 19:e1800157. [PMID: 30451371 DOI: 10.1002/pmic.201800157] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 11/01/2018] [Indexed: 12/13/2022]
Abstract
Glioblastoma, WHO-grade IV glioma, carries a dismal prognosis owing to its infiltrative growth and limited treatment options. Glioblastoma-derived extracellular vesicles (EVs; 30-1000 nm membranous particles) influence the microenvironment to mediate tumor aggressiveness and carry oncogenic cargo across the blood-brain barrier into the circulation. As such, EVs are biomarker reservoirs with enormous potential for assessing glioblastoma tumors in situ. Neurosurgical aspirates are rich sources of EVs, isolated directly from glioma microenvironments. EV proteomes enriched from glioblastoma (n = 15) and glioma grade II-III (n = 7) aspirates are compared and 298 differentially-abundant proteins (p-value < 0.00496) are identified using quantitative LC-MS/MS. Along with previously reported glioblastoma-associated biomarkers, levels of all eight subunits of the key molecular chaperone, T-complex protein 1 Ring complex (TRiC), are higher in glioblastoma-EVs, including CCT2, CCT3, CCT5, CCT6A, CCT7, and TCP1 (p < 0.00496). Analogous increases in TRiC transcript levels and DNA copy numbers are detected in silico; CCT6A has the greatest induction of expression and amplification in glioblastoma and shows a negative association with survival (p = 0.006). CCT6A is co-localized with EGFR at 7p11.2, with a strong tendency for co-amplification (p < 0.001). Immunohistochemistry corroborates the CCT6A proteomics measurements and indicated a potential link between EGFR and CCT6A tissue expression. Putative EV-biomarkers described here should be further assessed in peripheral blood.
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Affiliation(s)
- Susannah Hallal
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Sydney Medical School, University of Sydney, NSW, Australia
| | | | - Heng Wei
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Maggie Yuk T Lee
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | | | - Joanne Sy
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Brindha Shivalingam
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Department of Neurosurgery, Chris O'Brien Lifehouse, Camperdown, NSW, Australia
| | - Michael E Buckland
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Sydney Medical School, University of Sydney, NSW, Australia.,Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Kimberley L Kaufman
- Brainstorm Brain Cancer Research, Brain and Mind Centre, University of Sydney, NSW, Australia.,Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.,School of Life and Environmental Science, University of Sydney, NSW, Australia
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Pedersen SF, Counillon L. The SLC9A-C Mammalian Na +/H + Exchanger Family: Molecules, Mechanisms, and Physiology. Physiol Rev 2019; 99:2015-2113. [PMID: 31507243 DOI: 10.1152/physrev.00028.2018] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Na+/H+ exchangers play pivotal roles in the control of cell and tissue pH by mediating the electroneutral exchange of Na+ and H+ across cellular membranes. They belong to an ancient family of highly evolutionarily conserved proteins, and they play essential physiological roles in all phyla. In this review, we focus on the mammalian Na+/H+ exchangers (NHEs), the solute carrier (SLC) 9 family. This family of electroneutral transporters constitutes three branches: SLC9A, -B, and -C. Within these, each isoform exhibits distinct tissue expression profiles, regulation, and physiological roles. Some of these transporters are highly studied, with hundreds of original articles, and some are still only rudimentarily understood. In this review, we present and discuss the pioneering original work as well as the current state-of-the-art research on mammalian NHEs. We aim to provide the reader with a comprehensive view of core knowledge and recent insights into each family member, from gene organization over protein structure and regulation to physiological and pathophysiological roles. Particular attention is given to the integrated physiology of NHEs in the main organ systems. We provide several novel analyses and useful overviews, and we pinpoint main remaining enigmas, which we hope will inspire novel research on these highly versatile proteins.
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Affiliation(s)
- S F Pedersen
- Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark; and Université Côte d'Azur, CNRS, Laboratoire de Physiomédecine Moléculaire, LP2M, France, and Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
| | - L Counillon
- Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark; and Université Côte d'Azur, CNRS, Laboratoire de Physiomédecine Moléculaire, LP2M, France, and Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
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36
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Spatiotemporal control of photothermal heating using pH sensitive near-infrared croconaine-based dyes. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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37
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Zhang Y, Wu Z, Yu H, Wang H, Liu G, Wang S, Ji X. Chinese Herbal Medicine Wenxia Changfu Formula Reverses Cell Adhesion-Mediated Drug Resistance via the Integrin β1-PI3K-AKT Pathway in Lung Cancer. J Cancer 2019; 10:293-304. [PMID: 30719123 PMCID: PMC6360309 DOI: 10.7150/jca.25163] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 10/04/2018] [Indexed: 12/24/2022] Open
Abstract
In the treatment of lung cancer, the multidrug resistance to chemotherapeutic drugs is one of the reasons of low rates for cure and treatment failure, the combination of chemotherapeutic drugs and traditional Chinese medicine can increase the sensitivity of chemotherapy and reduce its adverse effects. Our previous study has proved that Chinese herbal medicine (CHM) Wenxia Changfu Formula (WCF for short) effectively enhances chemotherapeutic efficacy in lung cancer treatment and reverses multidrug resistance in lung cancer cells in vitro. The present study aims to investigate the effect and mechanism of WCF in reversing cell adhesion-mediated drug resistance of lung cancer by using A549 three-dimensional cell culture and nude mouse model of the A549 cell line with Integrin β1 overexpression. We show that the combination of WCF with DDP can decrease proliferation of lung cancer cells by inducing cell cycle arrest and apoptosis. Moreover, we find that the combination of WCF with DDP suppresses the expression of certain molecules which regulate cell cycle and apoptosis. Mechanistically, we show that the Integrin β1, FAK, PI3K, and AKT protein expressions are suppressed by DDP and even more responses are observed when DDP and WCF are combined, showing WCF treatment enhances the effect of commonly used anticancer drugs. In line with the above findings, our results confirm that WCF reverses cell adhesion-mediated drug resistance of lung cancer via inactivating Integrin β1/PI3K/AKT and apoptosis induction.
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Affiliation(s)
- YaNan Zhang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shangdong Province 250355, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - ZhiChun Wu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shangdong Province 250355, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - HuaYun Yu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shangdong Province 250355, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - HuaXin Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shangdong Province 250355, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - Guowei Liu
- Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - ShiJun Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shangdong Province 250355, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
| | - XuMing Ji
- College of Basic Medicine,Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310053, China.,Shandong Provincial Chinese Medicine Classical Prescription Demonstration Engineering Technology Research Center, Jinan, Shangdong Province 250355, China
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Liu Y, Chen D, Chen X, Kam WR, Hatton MP, Sullivan DA. Hypoxia: A breath of fresh air for the meibomian gland. Ocul Surf 2018; 17:310-317. [PMID: 30528291 DOI: 10.1016/j.jtos.2018.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 12/19/2022]
Abstract
PURPOSE Optimal meibomian gland (MG) function is critically important for the health and wellbeing of the ocular surface. We hypothesize that low oxygen (O2) conditions promote the function of human MG epithelial cells (HMGECs) and that human MGs exist in a relatively hypoxic environment. The purpose of this study was to test our hypotheses. METHODS We used human and mouse eyelid segments, and immortalized human MG epithelial cells (IHMGECs) in our studies. To evaluate oxygen (O2) levels in the mouse MG and vicinity, we injected pimonidazole (pimo), a hypoxia marker, before sacrifice. Human eyelid samples were stained with the hypoxia marker glucose transporter 1 (Glut-1). To determine the effect of low O2 levels on IHMGECs, we cultured cells under proliferating and differentiating conditions in both normoxic (21% O2) and hypoxic (3% O2) conditions for 5-15 days. IHMGECs were evaluated for cell number, neutral lipid content, lysosome accumulation, expression of biomarker proteins and DNase II activity. RESULTS Our results demonstrate that human and mouse MGs, but not the surrounding connective tissue, exist in a relatively hypoxic environment in vivo. In addition, our findings show that hypoxia does not influence IHMGEC numbers in basal or proliferating culture conditions, but does stimulate the expression of SREBP-1 in differentiating IHMGECs. Hypoxia also significantly increased DNase II activity, and apparently IHMGEC terminal differentiation. CONCLUSIONS Our Results support our hypotheses, and indicate that relative hypoxia promotes MG function.
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Affiliation(s)
- Yang Liu
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA.
| | - Di Chen
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA; Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Xiaomin Chen
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA; Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Wendy R Kam
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA
| | - Mark P Hatton
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA; Ophthalmic Consultants of Boston, Boston, 02114, USA
| | - David A Sullivan
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, 02114, USA
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Shao M, Zhu W, Lv X, Yang Q, Liu X, Xie Y, Tang P, Sun L. Encapsulation of chloroquine and doxorubicin by MPEG-PLA to enhance anticancer effects by lysosomes inhibition in ovarian cancer. Int J Nanomedicine 2018; 13:8231-8245. [PMID: 30584297 PMCID: PMC6284531 DOI: 10.2147/ijn.s174300] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Purpose As the deadliest gynecological malignancy, ovarian cancer ranks as a major cause of disease-related deaths to women worldwide and is treated with transurethral resection or systemic chemotherapy. However, traditional chemotherapeutic drug in antitumor therapy has shown unavoidable limitations, such as poor curative effects, systemic toxicity and development of drug resistance, leading to failure of tumor inhibition and recurrence. This study aims to explore an innovative method to enhance the clinical efficiency of ovarian cancer. Materials and methods Using MTT assay, the cell viability was detected under different culture systems. Western blot was used to examine the expression of P-gp in doxorubicin-resistant and wild-type A2780/SKOV3 cells. We used confocal to examine the drug concentration under different culture conditions. Also, flow cytometry was used to detect the drug absorption at the determined time points under different culture systems. Using nude mice model, we evaluated the killing efficacy of chemotherapeutic drugs with or without nanoparticle encapsulation. ELISA was used to examine the levels of creatinine, alanine aminotransferase and aspartate aminotransferase in plasma. Results We found that pretreatment of chloroquine (CQ) as chemosensitizer markedly enhanced the anticancer effects in ovarian cancer. We also provided evidence that CQ efficiently increase the pH value of lysosomes in tumor cells, leading to the reverse of drug sequestration induced by lysosomes. To further improve the pharmacokinetics profiles and avoid the systemic toxicity caused by chemotherapeutic agents, we encapsulated CQ and chemotherapeutic drugs by polymeric nanoparticles methoxy poly(ethylene glycol)-poly(l-lactic acid). Codelivery of CQ and chemotherapeutic agents by nanocarrier revealed enhanced anticancer effects compared with the free drug delivery by tail vein injection. More importantly, accumulated drugs, prolonged drug circulation and reduced organic damages were observed in nanoparticles delivery. Conclusion Codelivery of CQ and chemotherapeutic drugs by methoxy poly(ethylene glycol)-poly(l-lactic acid) could significantly improve the anticancer effects and might have important potency in clinical applications for ovarian cancer therapy.
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Affiliation(s)
- Ming Shao
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Weitao Zhu
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Xianping Lv
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Qiankun Yang
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Xin Liu
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Ying Xie
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Ping Tang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China,
| | - Ling Sun
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China,
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40
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Yang J, Li W, Luo L, Jiang M, Zhu C, Qin B, Yin H, Yuan X, Yin X, Zhang J, Luo Z, Du Y, You J. Hypoxic tumor therapy by hemoglobin-mediated drug delivery and reversal of hypoxia-induced chemoresistance. Biomaterials 2018; 182:145-156. [DOI: 10.1016/j.biomaterials.2018.08.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 02/06/2023]
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41
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Wang D, Lin H, Zhang G, Si Y, Yang H, Bai G, Yang C, Zhong K, Cai D, Wu Z, Wang R, Zou D. Effective pH-Activated Theranostic Platform for Synchronous Magnetic Resonance Imaging Diagnosis and Chemotherapy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31114-31123. [PMID: 30141893 DOI: 10.1021/acsami.8b11408] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Current magnetic resonance imaging (MRI)-guided pH-switching therapeutic platforms have encountered problems such as low relaxation rates, poor pH-switching efficiencies, and a lag in the drug release behind the MRI. Herein, we designed a nanoplatform with tunable pore size, which could match the size of drug molecules for pH-switching MRI and chemotherapy via ultrasmall manganese oxide-capped mesoporous silica nanoparticles (USMO@MSNs). USMO@MSN could quickly dissolve under weakly acidic conditions and leach abundant Mn2+ ions (leaching ratio: 76%), enhancing the MR contrast. The longitudinal relaxation rate ( r1) of USMO@MSNs significantly increased from 0.65 to 5.61 mM-1 s-1 as the pH decreased from 7.4 to 4.5, showing an ultrahigh-efficiency pH-switching T1-weighted MR contrast ability for in vivo tumor. Meanwhile, the matching pore structure allowed effective loading of doxorubicin (DOX) on USMO@MSNs to form smart therapeutic system (USMO@MSNs-DOX). The DOX release rate was strongly proportional to the pH-switching MRI signal of USMO@MSNs-DOX, allowing the release of DOX to be efficiently monitored by MRI. Confocal observations indicated that USMO@MSNs-DOX could be effectively internalized by HSC3 cells, and the entire system showed a good pH-switching theranostic performance for HSC3 cells. Therefore, this simple pH-switching system provides a new avenue for timely cancer diagnosis and personalized therapy.
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Affiliation(s)
- Dan Wang
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province , Anhui Medical University , Hefei 230032 , People's Republic of China
| | - Haiyan Lin
- Hangzhou Stomatological Hospital , University of Chinese Academy of Sciences , Hangzhou 310002 , People's Republic of China
| | | | - Yuanchun Si
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province , Anhui Medical University , Hefei 230032 , People's Republic of China
| | | | - Guo Bai
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases , Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology , Shanghai 200001 , P.R. China
| | - Chi Yang
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases , Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology , Shanghai 200001 , P.R. China
| | | | | | | | - Renfei Wang
- Hangzhou Stomatological Hospital , University of Chinese Academy of Sciences , Hangzhou 310002 , People's Republic of China
| | - Duohong Zou
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province , Anhui Medical University , Hefei 230032 , People's Republic of China
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases , Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology , Shanghai 200001 , P.R. China
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Lertsuwan J, Lertsuwan K, Sawasdichai A, Tasnawijitwong N, Lee KY, Kitchen P, Afford S, Gaston K, Jayaraman PS, Satayavivad J. CX-4945 Induces Methuosis in Cholangiocarcinoma Cell Lines by a CK2-Independent Mechanism. Cancers (Basel) 2018; 10:E283. [PMID: 30142881 PMCID: PMC6162756 DOI: 10.3390/cancers10090283] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/20/2018] [Accepted: 08/20/2018] [Indexed: 02/06/2023] Open
Abstract
Cholangiocarcinoma is a disease with a poor prognosis and increasing incidence and hence there is a pressing unmet clinical need for new adjuvant treatments. Protein kinase CK2 (previously casein kinase II) is a ubiquitously expressed protein kinase that is up-regulated in multiple cancer cell types. The inhibition of CK2 activity using CX-4945 (Silmitasertib) has been proposed as a novel treatment in multiple disease settings including cholangiocarcinoma. Here, we show that CX-4945 inhibited the proliferation of cholangiocarcinoma cell lines in vitro. Moreover, CX-4945 treatment induced the formation of cytosolic vacuoles in cholangiocarcinoma cell lines and other cancer cell lines. The vacuoles contained extracellular fluid and had neutral pH, features characteristic of methuosis. In contrast, simultaneous knockdown of both the α and α' catalytic subunits of protein kinase CK2 using small interfering RNA (siRNA) had little or no effect on the proliferation of cholangiocarcinoma cell lines and failed to induce the vacuole formation. Surprisingly, low doses of CX-4945 increased the invasive properties of cholangiocarcinoma cells due to an upregulation of matrix metallopeptidase 7 (MMP-7), while the knockdown of CK2 inhibited cell invasion. Our data suggest that CX-4945 inhibits cell proliferation and induces cell death via CK2-independent pathways. Moreover, the increase in cell invasion brought about by CX-4945 treatment suggests that this drug might increase tumor invasion in clinical settings.
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Affiliation(s)
- Jomnarong Lertsuwan
- Laboratory of Chemical Carcinogenesis, Chulabhorn Research Institute, Bangkok 10210, Thailand.
| | - Kornkamon Lertsuwan
- Department of Biochemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand.
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand.
| | - Anyaporn Sawasdichai
- Laboratory of Chemical Carcinogenesis, Chulabhorn Research Institute, Bangkok 10210, Thailand.
| | | | - Ka Ying Lee
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Philip Kitchen
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Simon Afford
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, UK.
| | - Kevin Gaston
- Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Padma-Sheela Jayaraman
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Jutamaad Satayavivad
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand.
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Harper K, R. Lavoie R, Charbonneau M, Brochu-Gaudreau K, Dubois CM. The Hypoxic Tumor Microenvironment Promotes Invadopodia Formation and Metastasis through LPA1 Receptor and EGFR Cooperation. Mol Cancer Res 2018; 16:1601-1613. [DOI: 10.1158/1541-7786.mcr-17-0649] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/03/2018] [Accepted: 05/17/2018] [Indexed: 11/16/2022]
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Kong D, Tian X, Li Y, Zhang S, Cheng Y, Huo L, Ma H, Yang Z, Ren L, Zhang M, Zhang W. Revealing the Inhibitory Effect of Ginseng on Mitochondrial Respiration through Synaptosomal Proteomics. Proteomics 2018; 18:e1700354. [PMID: 29687596 DOI: 10.1002/pmic.201700354] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/19/2018] [Indexed: 12/25/2022]
Abstract
Ginseng, the active ingredients of which are ginsenosides, is the most popular herbal medicine and has potential merit in the treatment of cerebral disorders. To better understand the function of Ginseng in the cerebral system, we examined changes in the protein expression profiles of synaptosomes extracted from the cerebral cortical and hippocampal tissues of rats administered a high or low dose of Ginseng for 2 weeks. More than 5000 proteins belonging to synaptosomes were simultaneously identified and quantitated by an approach combining tandem mass tags with 2D liquid chromatography-mass spectrometry (LC-MS). Regarding differentially expressed proteins, downregulated proteins were much more highly induced than upregulators in the cerebral cortical and hippocampal synaptosomes, regardless of the dose of Ginseng. Bioinformatic analysis indicated the majority of the altered proteins to be located in the mitochondria, directly or indirectly affecting mitochondrial oxidative respiration. Further functional experiments using the substrate-uncoupler inhibitor titration approach confirmed that three representative ginsenosides were able to inhibit oxidative phosphorylation in mitochondria. Our results demonstrate that Ginseng can regulate the function of mitochondria and alter the energy metabolism of cells, which may be useful for the treatment of central nervous disorders.
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Affiliation(s)
- Dezhi Kong
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Xiaolin Tian
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Yunshan Li
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Saihang Zhang
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Yiru Cheng
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Lifang Huo
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Huanhuan Ma
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Zuxiao Yang
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Leiming Ren
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Mingquan Zhang
- Department of Basic Theory of Chinese Medicine, Hebei University of Chinese Medicine, Shijiazhuang, 050017, P. R. China
| | - Wei Zhang
- Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
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45
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Lucien F, Lavoie RR, Dubois CM. Targeting endosomal pH for cancer chemotherapy. Mol Cell Oncol 2018; 5:e1435184. [PMID: 30250892 PMCID: PMC6149877 DOI: 10.1080/23723556.2018.1435184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 01/07/2018] [Accepted: 01/08/2018] [Indexed: 01/25/2023]
Abstract
Altered pH homeostasis in cancer cells has been linked with essentially all classical hallmarks of cancer, including chemoresistance. We recently identified a conceptually novel mechanism for how dysregulated pH in hypoxic cells causes chemoresistance which is based on the aberrant cellular distribution of the endosomal pH regulator, the sodium/hydrogen exchanger 6 (NHE6).
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Affiliation(s)
- Fabrice Lucien
- Division of Immunology, Faculty of Medicine and Health Sciences, University of Sherbrooke, Canada.,Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Roxane R Lavoie
- Division of Immunology, Faculty of Medicine and Health Sciences, University of Sherbrooke, Canada.,Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Claire M Dubois
- Division of Immunology, Faculty of Medicine and Health Sciences, University of Sherbrooke, Canada.,Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
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