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Natan Y, Blum YD, Arav A, Poliansky Y, Neuman S, Ecker Cohen O, Ben Y. Amorphous Calcium Carbonate Shows Anti-Cancer Properties That are Attributed to Its Buffering Capacity. Cancers (Basel) 2023; 15:3785. [PMID: 37568601 PMCID: PMC10417113 DOI: 10.3390/cancers15153785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/03/2023] [Accepted: 07/15/2023] [Indexed: 08/13/2023] Open
Abstract
AIM Amorphous calcium carbonate (ACC) is a non-crystalline form of calcium carbonate, and it is composed of aggregated nano-size primary particles. Here, we evaluated its anti-cancer effect postulated relative to its buffering capabilities in lung cancer. METHODS Tumors were evaluated in vivo using the Lewis lung carcinoma (LLC) mouse cell line and A549 human lung cancer carcinoma cell line. LLC and A549 cells were injected subcutaneously into the right hind leg of mice. Treatments (ACC, cisplatin, vehicle, and ACC with cisplatin, all given via daily IP injections) started once tumors reached a measurable size. Treatments were carried out for 14 days in the LLC model and for 22 and 24 days in the xenograft model (two experiments). LLC tumors were resected from ACC at the end of the study, and vehicle groups were evaluated for cathepsin B activity. Differential gene expression was carried out on A549 cells following 8 weeks of in vitro culture in the presence or absence of ACC in a culture medium. RESULTS The ACC treatment decelerated tumor growth rates in both models. When tumor volumes were compared on the last day of each study, the ACC-treated animal tumor volume was reduced by 44.83% compared to vehicle-treated animals in the LLC model. In the xenograft model, the tumor volume was reduced by 51.6% in ACC-treated animals compared to vehicle-treated animals. A more substantial reduction of 74.75% occurred in the combined treatment of ACC and cisplatin compared to the vehicle (carried out only in the LLC model). Cathepsin B activity was significantly reduced in ACC-treated LLC tumors compared to control tumors. Differential gene expression results showed a shift towards anti-tumorigenic pathways in the ACC-treated A549 cells. CONCLUSION This study supports the ACC anti-malignant buffering hypothesis by demonstrating decelerated tumor growth, reduced cathepsin B activity, and altered gene expressions to produce anti-cancerous effects.
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Affiliation(s)
- Yehudit Natan
- Amorphical Ltd., 11 HaHarash st., Nes-Ziona 7403118, Israel
| | - Yigal Dov Blum
- Amorphical Ltd., 11 HaHarash st., Nes-Ziona 7403118, Israel
| | - Amir Arav
- A.A. Cash Technology Ltd., 59 Shlomzion Hamalka st., Tel-Aviv 6226618, Israel
| | | | - Sara Neuman
- Amorphical Ltd., 11 HaHarash st., Nes-Ziona 7403118, Israel
| | | | - Yossi Ben
- Amorphical Ltd., 11 HaHarash st., Nes-Ziona 7403118, Israel
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Wu W, Lu Z, Lu C, Sun X, Ni B, Cölfen H, Xiong R. Bioinspired Stabilization of Amorphous Calcium Carbonate by Carboxylated Nanocellulose Enables Mechanically Robust, Healable, and Sensing Biocomposites. ACS Nano 2023; 17:6664-6674. [PMID: 36946540 PMCID: PMC10100558 DOI: 10.1021/acsnano.2c12385] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
Nature builds numerous structurally complex composites with fascinating mechanical robustness and functionalities by harnessing biopolymers and amorphous calcium carbonate (ACC). The key to successfully mimicking these natural designs is efficiently stabilizing ACC, but developing highly efficient, biodegradable, biocompatible, and sustainable stabilizing agents remains a grand challenge since anhydrous ACC is inherently unstable toward crystallization in the wet state. Inspired by the stabilized ACC in crustacean cuticles, we report the efficient stabilization ability of the most abundant biopolymer-cellulose nanofibrils (CNFs) for ACC. Through the cooperative stabilizing effect of surface carboxyl groups and a rigid segregated network, the CNFs exhibit long-term stability (more than one month) and achieved a stabilization efficiency of 3.6 and 4.4 times that of carboxymethyl cellulose (CMC) and alginate, respectively, even higher than poly(acrylic acid). The resulting CNF/ACC dispersions can be constructed into transparent composite films with the high strength of 286 MPa and toughness up to 28.5 MJ/m3, which surpass those of the so far reported synthetic biopolymer-calcium carbonate/phosphate composites. The dynamic interfacial interaction between nanocomponents also provides the composite films with good self-healing properties. Owing to their good wet stability, the composite films present high humidity sensitivity for monitoring respiration and finger contact.
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Affiliation(s)
- Wanlin Wu
- State Key
Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Zhixing Lu
- Engineering
Research Center of Polymer Green Recycling of Ministry of Education,
College of Environmental and Resource Sciences, Fujian Normal University, Fuzhou 350007, China
| | - Canhui Lu
- State Key
Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Xunwen Sun
- State Key
Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Bing Ni
- Physical
Chemistry, Department of Chemistry, University
of Konstanz, Konstanz 78457, Germany
| | - Helmut Cölfen
- Physical
Chemistry, Department of Chemistry, University
of Konstanz, Konstanz 78457, Germany
| | - Rui Xiong
- State Key
Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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Tagliavento M, Davies AJ, Bernecker M, Staudigel PT, Dawson RR, Dietzel M, Götschl K, Guo W, Schulp AS, Therrien F, Zelenitsky DK, Gerdes A, Müller W, Fiebig J. Evidence for heterothermic endothermy and reptile-like eggshell mineralization in Troodon, a non-avian maniraptoran theropod. Proc Natl Acad Sci U S A 2023; 120:e2213987120. [PMID: 37011196 PMCID: PMC10104568 DOI: 10.1073/pnas.2213987120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 02/15/2023] [Indexed: 04/05/2023] Open
Abstract
The dinosaur-bird transition involved several anatomical, biomechanical, and physiological modifications of the theropod bauplan. Non-avian maniraptoran theropods, such as Troodon, are key to better understand changes in thermophysiology and reproduction occurring during this transition. Here, we applied dual clumped isotope (Δ47 and Δ48) thermometry, a technique that resolves mineralization temperature and other nonthermal information recorded in carbonates, to eggshells from Troodon, modern reptiles, and modern birds. Troodon eggshells show variable temperatures, namely 42 and 29 ± 2 °C, supporting the hypothesis of an endothermic thermophysiology with a heterothermic strategy for this extinct taxon. Dual clumped isotope data also reveal physiological differences in the reproductive systems between Troodon, reptiles, and birds. Troodon and modern reptiles mineralize their eggshells indistinguishable from dual clumped isotope equilibrium, while birds precipitate eggshells characterized by a positive disequilibrium offset in Δ48. Analyses of inorganic calcites suggest that the observed disequilibrium pattern in birds is linked to an amorphous calcium carbonate (ACC) precursor, a carbonate phase known to accelerate eggshell formation in birds. Lack of disequilibrium patterns in reptile and Troodon eggshells implies these vertebrates had not acquired the fast, ACC-based eggshell calcification process characteristic of birds. Observation that Troodon retained a slow reptile-like calcification suggests that it possessed two functional ovaries and was limited in the number of eggs it could produce; thus its large clutches would have been laid by several females. Dual clumped isotope analysis of eggshells of extinct vertebrates sheds light on physiological information otherwise inaccessible in the fossil record.
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Affiliation(s)
- Mattia Tagliavento
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Amelia J. Davies
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Miguel Bernecker
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Philip T. Staudigel
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Robin R. Dawson
- Department of Earth, Geographic and Climate Sciences, University of Massachusetts, Amherst, MA01003
| | - Martin Dietzel
- Institute of Applied Geosciences, Graz University of Technology,8010Graz, Austria
| | - Katja Götschl
- Institute of Applied Geosciences, Graz University of Technology,8010Graz, Austria
| | - Weifu Guo
- Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA02543
| | - Anne S. Schulp
- Vertebrate Evolution and Development, Naturalis Biodiversity Center,2333CRLeiden, the Netherlands
- Department of Earth Sciences, Faculty of Geosciences, Universiteit Utrecht,3584 CBUtrecht, the Netherlands
| | | | | | - Axel Gerdes
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
- Frankfurt Isotope and Element Research Center, Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Wolfgang Müller
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
- Frankfurt Isotope and Element Research Center, Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
| | - Jens Fiebig
- Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main60438, Germany
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Wang Y, Zhang D, Sun Y, Zeng Y, Qi P. Precise Localization and Simultaneous Bacterial Eradication of Biofilms Based on Nanocontainers with Successive Responsive Property toward pH and ATP. ACS Appl Mater Interfaces 2023; 15:8424-8435. [PMID: 36744696 DOI: 10.1021/acsami.2c22682] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The bacterial colonization of surfaces and subsequent biofilm formation are a great threat in medical therapy and clinical diagnosis. The complex internal structure and composition sets an enormous obstacle for the localization and removal of biofilms. In this study, we proposed a novel biofilm-targeted nanocontainer with successive responsive property toward pH and ATP for precise localization and simultaneous bacterial eradication, with an acidic and adenosine triphosphate (ATP)-rich microenvironment within biofilms, formed due to the accumulation of fatty acids and ATP in the three-dimensional enclosed structure, integrated as two successive indicators to improve the precision of biofilm identification and removal. The biofilm-targeted nanocontainer was composed of a ATP-responsive zeolitic imidazolate framework-90 (ZIF-90) core loaded with Rho 6G and doxorubicin hydrochloride (DOX) encapsulated in the pH-responsive amorphous calcium carbonate/poly(acrylic acid) (ACC/PAA) shell. In the presence of biofilms, the ACC/PAA shell and ZIF-90 core were successively degraded by the accumulated H+ and ATP within biofilms, resulting in the release of fluorescence indicators and antimicrobial agents. On the other hand, to meet the application requirements of different biofilm scenarios, the pH response ability of the nanocontainers could be adjusted by changing the metallic ions (Ni2+, Zn2+, and Cu2+) doped into the structure of the ACC/PAA shell. Owing to excellent water dispersion of the pH/ATP double-responsive ZIF-90@Zn-ACC/PAA nanocontainer, precise localization and simultaneous bacterial eradication was successfully realized via a simple spray process. The successive pH/ATP two-step unlocking processes endowed the nanocontainers high precision for localization and simultaneous eradication of biofilms, which made the proposed nanocontainers high promising in food safety and medical treatment.
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Affiliation(s)
- Yingwen Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao 266237, China
| | - Dun Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao 266237, China
| | - Yan Sun
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao 266237, China
| | - Yan Zeng
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao 266237, China
| | - Peng Qi
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao 266237, China
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Wang S, Neufurth M, Schepler H, Tan R, She Z, Al-Nawas B, Wang X, Schröder HC, Müller WEG. Acceleration of Wound Healing through Amorphous Calcium Carbonate, Stabilized with High-Energy Polyphosphate. Pharmaceutics 2023; 15:pharmaceutics15020494. [PMID: 36839816 PMCID: PMC9961744 DOI: 10.3390/pharmaceutics15020494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Amorphous calcium carbonate (ACC), precipitated in the presence of inorganic polyphosphate (polyP), has shown promise as a material for bone regeneration due to its morphogenetic and metabolic energy (ATP)-delivering properties. The latter activity of the polyP-stabilized ACC ("ACC∙PP") particles is associated with the enzymatic degradation of polyP, resulting in the transformation of ACC into crystalline polymorphs. In a novel approach, stimulated by these results, it was examined whether "ACC∙PP" also promotes the healing of skin injuries, especially chronic wounds. In in vitro experiments, "ACC∙PP" significantly stimulated the migration of endothelial cells, both in tube formation and scratch assays (by 2- to 3-fold). Support came from ex vivo experiments showing increased cell outgrowth in human skin explants. The transformation of ACC into insoluble calcite was suppressed by protein/serum being present in wound fluid. The results were confirmed in vivo in studies on normal (C57BL/6) and diabetic (db/db) mice. Topical administration of "ACC∙PP" significantly accelerated the rate of re-epithelialization, particularly in delayed healing wounds in diabetic mice (day 7: 1.5-fold; and day 13: 1.9-fold), in parallel with increased formation/maturation of granulation tissue. The results suggest that administration of "ACC∙PP" opens a new strategy to improve ATP-dependent wound healing, particularly in chronic wounds.
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Affiliation(s)
- Shunfeng Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Meik Neufurth
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Hadrian Schepler
- Department of Dermatology, University Clinic Mainz, Langenbeckstr. 1, D-55131 Mainz, Germany
| | - Rongwei Tan
- Shenzhen Lando Biomaterials Co., Ltd., Building B3, Unit 2B-C, China Merchants Guangming Science Park, Guangming District, Shenzhen 518107, China
| | - Zhending She
- Shenzhen Lando Biomaterials Co., Ltd., Building B3, Unit 2B-C, China Merchants Guangming Science Park, Guangming District, Shenzhen 518107, China
| | - Bilal Al-Nawas
- Clinic for Oral and Maxillofacial Surgery and Plastic Surgery, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, D-55131 Mainz, Germany
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Heinz C. Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
- Correspondence: (H.C.S.); (W.E.G.M.)
| | - Werner E. G. Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
- Correspondence: (H.C.S.); (W.E.G.M.)
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Weinstein Y, Ovadia Y, Weinstein B, Weinstein A. The Effects of Amorphous Calcium Carbonate (ACC) Supplementation on Resistance Exercise Performance in Women. Nutrients 2023; 15:nu15030538. [PMID: 36771244 PMCID: PMC9919417 DOI: 10.3390/nu15030538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
The effects of 9 weeks of amorphous calcium carbonate (ACC) supplementation (1000 mg/day) and resistance exercise training (RT) on one repetition maximum (1-RM) values were tested. Thirty-one women (33.1 ± 7.3 y) were randomly assigned into a supplement (ACC, n = 14) or a placebo (PL, n = 17) group. On day 1 and following 9 weeks of intervention, the participants underwent anthropometric measurements and filled out a food frequency questionnaire (FFQ) and sports injuries questionnaires. 1-RM values were measured for the back squat and bench press exercises. All the participants significantly (p = 0.01) improved their mean back squat and bench press 1-RM values (time effect). While no between-group difference was observed in the bench press 1-RM values, the ACC groups' mean post-pre bench press 1-RM differences (Δ1-RM) were significantly higher than in the PL group, expressed in kg (p = 0.049), per body mass (p = 0.042), or per lean body mass (p = 0.035). No significant interaction was observed for time X group effect (p = 0.421). No differences (within- or between-groups) were observed in the anthropometric values or in the questionnaires' results. ACC supplementation revealed an ergogenic effect by augmenting the improvement of maximum amount generated force, which can possibly be attributed to the calcium and/or the carbonate components.
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Affiliation(s)
- Yitzhak Weinstein
- Department of Nutritional Sciences, Tel-Hai Academic College, Kiryat Shmone 1220800, Israel
- Correspondence:
| | - Yarden Ovadia
- Department of Nutritional Sciences, Tel-Hai Academic College, Kiryat Shmone 1220800, Israel
| | - Bar Weinstein
- Department of Statistics and Operations Research, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ayelet Weinstein
- Department of Nutritional Sciences, Tel-Hai Academic College, Kiryat Shmone 1220800, Israel
- Department of Sports Medicine and Research, Wingate Institute, Netanya 4290200, Israel
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Yu J, Wang L, Xie X, Zhu W, Lei Z, Lv L, Yu H, Xu J, Ren J. Multifunctional Nanoparticles Codelivering Doxorubicin and Amorphous Calcium Carbonate Preloaded with Indocyanine Green for Enhanced Chemo-Photothermal Cancer Therapy. Int J Nanomedicine 2023; 18:323-337. [PMID: 36700147 PMCID: PMC9869790 DOI: 10.2147/ijn.s394896] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/07/2023] [Indexed: 01/20/2023] Open
Abstract
Background Multifunctional stimuli-responsive nanoparticles with photothermal-chemotherapy provided a powerful tool for improving the accuracy and efficiency in the treatment of malignant tumors. Methods Herein, photosensitizer indocyanine green (ICG)-loaded amorphous calcium-carbonate (ICG@) nanoparticle was prepared by a gas diffusion reaction. Doxorubicin (DOX) and ICG@ were simultaneously encapsulated into poly(lactic-co-glycolic acid)-ss-chondroitin sulfate A (PSC) nanoparticles by a film hydration method. The obtained PSC/ICG@+DOX hybrid nanoparticles were characterized and evaluated by Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), transmission electron microscopy (TEM), and differential scanning calorimetry (DSC). The cellular uptake and cytotoxicity of PSC/ICG@+DOX nanoparticles were analyzed by confocal laser scanning microscopy (CLSM) and MTT assay in 4T1 cells. In vivo antitumor activity of the nanoparticles was evaluated in 4T1-bearing Balb/c mice. Results PSC/ICG@+DOX nanoparticles were nearly spherical in shape by TEM observation, and the diameter was 407 nm determined by DLS. Owing to calcium carbonate and disulfide bond linked copolymer, PSC/ICG@+DOX nanoparticles exhibited pH and reduction-sensitive drug release. Further, PSC/ICG@+DOX nanoparticles showed an effective photothermal effect under near-infrared (NIR) laser irradiation, and improved cellular uptake and cytotoxicity in breast cancer 4T1 cells. Importantly, PSC/ICG@+DOX nanoparticles demonstrated the most effective suppression of tumor growth in orthotopic 4T1-bearing mice among the treatment groups. In contrast with single chemotherapy or photothermal therapy, chemo-photothermal treatment by PSC/ICG@+DOX nanoparticles synergistically inhibited the growth of 4T1 cells. Conclusion This study demonstrated that PSC/ICG@+DOX nanoparticles with active targeting and stimuli-sensitivity would be a promising strategy to enhance chemo-photothermal cancer therapy.
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Affiliation(s)
- Jingmou Yu
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Huzhou, People’s Republic of China,Jiangxi Provincial Laboratory Laboratory of System Biomedicine, Jiujiang University, Jiujiang, People’s Republic of China,School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China,Correspondence: Jingmou Yu; Jin Ren, Email ;
| | - Liangliang Wang
- Affiliated Hospital of Jiujiang University, Jiujiang, People’s Republic of China
| | - Xin Xie
- Jiangxi Provincial Laboratory Laboratory of System Biomedicine, Jiujiang University, Jiujiang, People’s Republic of China
| | - Wenjing Zhu
- School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China
| | - Zhineng Lei
- School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China
| | - Linghui Lv
- School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China
| | - Hongling Yu
- School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China
| | - Jing Xu
- Affiliated Hospital of Jiujiang University, Jiujiang, People’s Republic of China
| | - Jin Ren
- Jiangxi Provincial Laboratory Laboratory of System Biomedicine, Jiujiang University, Jiujiang, People’s Republic of China,School of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, People’s Republic of China
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Tilman A. Grünewald, Stefano Checchia, Hamadou Dicko, Gilles Le Moullac, Manaarii Sham Koua, Jeremie Vidal-Dupiol, Julien Duboisset, Julius Nouet, Olivier Grauby, Marco Di Michiel, Virginie Chamard. Structure of an amorphous calcium carbonate phase involved in the formation of Pinctada margaritifera shells. Proc Natl Acad Sci U S A 2022; 119:e2212616119. [PMID: 36322756 DOI: 10.1073/pnas.2212616119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Some mollusc shells are formed from an amorphous calcium carbonate (ACC) compound, which further transforms into a crystalline material. The transformation mechanism is not fully understood but is however crucial to develop bioinspired synthetic biomineralization strategies or accurate marine biomineral proxies for geoscience. The difficulty arises from the simultaneous presence of crystalline and amorphous compounds in the shell, which complicates the selective experimental characterization of the amorphous fraction. Here, we use nanobeam X-ray total scattering together with an approach to separate crystalline and amorphous scattering contributions to obtain the spatially resolved atomic pair distribution function (PDF). We resolve three distinct amorphous calcium carbonate compounds, present in the shell of Pinctada margaritifera and attributed to: interprismatic periostracum, young mineralizing units, and mature mineralizing units. From this, we extract accurate bond parameters by reverse Monte Carlo (RMC) modeling of the PDF. This shows that the three amorphous compounds differ mostly in their Ca-O nearest-neighbor atom pair distance. Further characterization with conventional spectroscopic techniques unveils the presence of Mg in the shell and shows Mg-calcite in the final, crystallized shell. In line with recent literature, we propose that the amorphous-to-crystal transition is mediated by the presence of Mg. The transition occurs through the decomposition of the initial Mg-rich precursor into a second Mg-poor ACC compound before forming a crystal.
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Nie B, Wang H, Rao C, Zhang Y, Wang H, Lian X, Gao X, Niu B, Li W. Preparation and characterization of sodium alginate/phosphate-stabilized amorphous calcium carbonate nanocarriers and their application in the release of curcumin. Nanotechnology 2021; 32:375712. [PMID: 34044371 DOI: 10.1088/1361-6528/ac05ea] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
Phosphate-stabilized amorphous calcium carbonate (ACCP) has excellent biocompatibility, bioactivity, and biodegradability, and can be easily synthesized and stored. However, unmodified ACCP, as a controlled drug release carrier, decomposes rapidly in an acidic environment and highly depends on the system's pH value, which can not meet the need for long-term release of active substances, thus limiting its application scope. To realize the specific pH responsiveness of ACCP nanoparticles, we designed and synthesized monodisperse sodium alginate/ACCP (Alginate/ACCP) composite nanoparticles in this paper. After ultrasonic treatment, nanoparticles with an average particle size less than 200 nm could form stable water dispersion that could be dispersed for up to 10 d. Based on the specific pH sensitivity of sodium alginate, the drug-controlled release performance of composite nanoparticles and the therapeutic effect of drug-loaded nanoparticles on A549 cancer cells were studied. The results indicated that under the same pH condition, the curcumin (Cur) release rate of composite nanoparticles gradually decreased with sodium alginate addition. When the dosage of sodium alginate was 1.0 mg ml-1, the cumulative drug release rate of nanoparticles in 40 h was only about 35%. Besides, the drug-loaded nanoparticles showed the excellent killing ability of cancer cells, and the survival rate of cancer cells decreased in a concentration-dependent manner. Therefore, through reasonable optimization design, we can synthesize composite nanoparticles with excellent sustained-release properties to provide a new strategy for cancer cells' long-term treatment.
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Affiliation(s)
- Bin Nie
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Hong Wang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Chaohui Rao
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Yanwei Zhang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Huifang Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Xiaojie Lian
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Shanxi Key Laboratory of Material Strength & Structural Impact, Institute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
| | - Xianghua Gao
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Baolong Niu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
| | - Wenfeng Li
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, People's Republic of China
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10
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Cestari F, Agostinacchio F, Galotta A, Chemello G, Motta A, M. Sglavo V. Nano-Hydroxyapatite Derived from Biogenic and Bioinspired Calcium Carbonates: Synthesis and In Vitro Bioactivity. Nanomaterials (Basel) 2021; 11:264. [PMID: 33498482 PMCID: PMC7909533 DOI: 10.3390/nano11020264] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 02/02/2023]
Abstract
Biogenic calcium carbonates naturally contain ions that can be beneficial for bone regeneration and therefore are attractive resources for the production of bioactive calcium phosphates. In the present work, cuttlefish bones, mussel shells, chicken eggshells and bioinspired amorphous calcium carbonate were used to synthesize hydroxyapatite nano-powders which were consolidated into cylindrical pellets by uniaxial pressing and sintering 800-1100 °C. Mineralogical, structural and chemical composition were studied by SEM, XRD, inductively coupled plasma/optical emission spectroscopy (ICP/OES). The results show that the phase composition of the sintered materials depends on the Ca/P molar ratio and on the specific CaCO3 source, very likely associated with the presence of some doping elements like Mg2+ in eggshell and Sr2+ in cuttlebone. Different CaCO3 sources also resulted in variable densification and sintering temperature. Preliminary in vitro tests were carried out (by the LDH assay) and they did not reveal any cytotoxic effects, while good cell adhesion and proliferation was observed at day 1, 3 and 5 after seeding through confocal microscopy. Among the different tested materials, those derived from eggshells and sintered at 900 °C promoted the best cell adhesion pattern, while those from cuttlebone and amorphous calcium carbonate showed round-shaped cells and poorer cell-to-cell interconnection.
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Affiliation(s)
- Francesca Cestari
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
| | - Francesca Agostinacchio
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
- BIOTech Research Center, and European Institute of Excellence on Tissue Engineering and Regenerative Medicine Unit, University of Trento, via delle Regole 101, 38123 Trento, Italy
| | - Anna Galotta
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
| | - Giovanni Chemello
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
| | - Antonella Motta
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
- BIOTech Research Center, and European Institute of Excellence on Tissue Engineering and Regenerative Medicine Unit, University of Trento, via delle Regole 101, 38123 Trento, Italy
- INSTM, Via G. Giusti 9, 50121 Firenze, Italy
| | - Vincenzo M. Sglavo
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (F.A.); (A.G.); (G.C.); (A.M.); (V.M.S.)
- INSTM, Via G. Giusti 9, 50121 Firenze, Italy
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11
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Wang J, Tao S, Jin X, Song Y, Zhou W, Lou H, Zhao R, Wang C, Hu F, Yuan H. Calcium Supplement by Tetracycline guided amorphous Calcium Carbonate potentiates Osteoblast promotion for Synergetic Osteoporosis Therapy. Am J Cancer Res 2020; 10:8591-8605. [PMID: 32754265 PMCID: PMC7392017 DOI: 10.7150/thno.45142] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/01/2020] [Indexed: 12/18/2022] Open
Abstract
Background: The calcium supplement is a clinically approved approach for osteoporosis therapy but usually requires a large dosage without targetability and with poor outcome. This modality is not fully explored in current osteoporosis therapy due to the lack of proper calcium supplement carrier. Methods: In this study, we constructed a tetracycline (Tc) modified and simvastatin (Sim) loaded phospholipid-amorphous calcium carbonate (ACC) hybrid nanoparticle (Tc/ACC/Sim). Results: The resulted Tc/ACC/Sim was able to enhance its accumulation at the osteoporosis site. Most importantly, the combination of calcium supplement and Sim offered synergetic osteoblast promotion therapy of osteoporosis with advanced performance than non-targeted system or mono therapy. Conclusion: This platform provides an alternative approach to stimulate bone formation by synergetic promotion of osteoblast differentiation using calcium supplement and Sim.
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12
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Tolba E, Wang X, Wang S, Neufurth M, Ackermann M, Schröder HC, Müller WEG. Amorphous Polyphosphate and Ca-Carbonate Nanoparticles Improve the Self-Healing Properties of both Technical and Medical Cements. Biotechnol J 2020; 15:e2000101. [PMID: 32497376 DOI: 10.1002/biot.202000101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/12/2020] [Indexed: 02/04/2023]
Abstract
Cement is used both as a construction material and for medical applications. Previously, it has been shown that the physiological polymer inorganic polyphosphate (polyP) is morphogenetically active in regeneration of skin, bone, and cartilage. The present study investigates the question if this polymer is also a suitable additive to improve the self-healing capacity not only of construction cement but also of inorganic bone void fillers. For the application in the cement, two different polyP-based amorphous nanoparticles (NP) are prepared, amorphous Ca-polyP NP and amorphous Ca-carbonate (ACC) NP. The particles are integrated into poly(methyl methacrylate) in a concentration ratio of 1:10. This material applied onto Portland cement blocks either by brush application or by blow spinning strongly accelerates the self-healing property of the cement after a 10 day incubation period. Most likely, this process depends on bacteria and their membrane-associated alkaline phosphatase, resulting in the formation of calcite from ACC. In a second approach, polyP is integrated into a calcium-silicate-based cement used in reconstitutive medicine. Subsequently, the cement becomes softer and more elastic. The data show that bioinspired polyP/ACC NP are suitable additives to improve the self-healing of construction cement and to biologize bone cement.
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Affiliation(s)
- Emad Tolba
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany.,Polymers and Pigments Department, National Research Center, Dokki, Giza, 12622, Egypt
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany
| | - Shunfeng Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany
| | - Meik Neufurth
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany
| | - Maximilian Ackermann
- Institute of Functional and Clinical Anatomy, University Medical Center of the Johannes Gutenberg University, Johann Joachim Becher Weg 13, Mainz, 55099, Germany
| | - Heinz C Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany.,NanotecMARIN GmbH, Mühlstrasse 19, Ingelheim am Rhein, 55218, Germany
| | - Werner E G Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, Mainz, 55128, Germany
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13
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Tolba E, Wang S, Wang X, Neufurth M, Ackermann M, Muñoz-Espí R, Abd El-Hady BM, Schröder HC, Müller WEG. Self-Healing Properties of Bioinspired Amorphous CaCO 3/Polyphosphate-Supplemented Cement. Molecules 2020; 25:E2360. [PMID: 32438652 PMCID: PMC7287741 DOI: 10.3390/molecules25102360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 12/27/2022] Open
Abstract
There is a strong interest in cement additives that are able to prevent or mitigate the adverse effects of cracks in concrete that cause corrosion of the reinforcement. Inorganic polyphosphate (polyP), a natural polymer that is synthesized by bacteria, even those on cement/concrete, can increase the resistance of concrete to progressive damage from micro-cracking. Here we use a novel bioinspired strategy based on polyP-stabilized amorphous calcium carbonate (ACC) to give this material self-healing properties. Portland cement was supplemented with ACC nanoparticles which were stabilized with 10% (w/w) Na-polyP. Embedding these particles in the hydrated cement resulted in the formation of calcite crystals after a hardening time of 10 days, which were not seen in controls, indicating that the particles dissolve and then transform into calcite. While there was no significant repair in the controls without ACC, almost complete closure of the cracks was observed after a 10 days healing period in the ACC-supplemented samples. Nanoindentation measurements on the self-healed crack surfaces showed a similar or slightly higher elasticity at a lower hardness compared to non-cracked surfaces. Our results demonstrate that bioinspired approaches, like the use of polyP-stabilized ACC shown here, can significantly improve the repair capacity of Portland cement.
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Affiliation(s)
- Emad Tolba
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
- Polymers and Pigments Department, National Research Center, Dokki, Giza 12622, Egypt;
| | - Shunfeng Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
| | - Meik Neufurth
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
| | - Maximilian Ackermann
- Institute of Functional and Clinical Anatomy, University Medical Center of the Johannes Gutenberg University, Johann Joachim Becher Weg 13, 55099 Mainz, Germany;
| | - Rafael Muñoz-Espí
- Institute of Materials Science (ICMUV), Universitat de València, C/Catedràtic José Beltrán 2, 46980 Paterna, València, Spain;
| | | | - Heinz C. Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
- NanotecMARIN GmbH, Mühlstr. 19, 55218 Ingelheim am Rhein, Germany
| | - Werner E. G. Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany; (E.T.); (S.W.); (M.N.); (H.C.S.)
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14
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Drake JL, Mass T, Stolarski J, Von Euw S, van de Schootbrugge B, Falkowski PG. How corals made rocks through the ages. Glob Chang Biol 2020; 26:31-53. [PMID: 31696576 PMCID: PMC6942544 DOI: 10.1111/gcb.14912] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 05/03/2023]
Abstract
Hard, or stony, corals make rocks that can, on geological time scales, lead to the formation of massive reefs in shallow tropical and subtropical seas. In both historical and contemporary oceans, reef-building corals retain information about the marine environment in their skeletons, which is an organic-inorganic composite material. The elemental and isotopic composition of their skeletons is frequently used to reconstruct the environmental history of Earth's oceans over time, including temperature, pH, and salinity. Interpretation of this information requires knowledge of how the organisms formed their skeletons. The basic mechanism of formation of calcium carbonate skeleton in stony corals has been studied for decades. While some researchers consider coral skeletons as mainly passive recorders of ocean conditions, it has become increasingly clear that biological processes play key roles in the biomineralization mechanism. Understanding the role of the animal in living stony coral biomineralization and how it evolved has profound implications for interpreting environmental signatures in fossil corals to understand past ocean conditions. Here we review historical hypotheses and discuss the present understanding of how corals evolved and how their skeletons changed over geological time. We specifically explain how biological processes, particularly those occurring at the subcellular level, critically control the formation of calcium carbonate structures. We examine the different models that address the current debate including the tissue-skeleton interface, skeletal organic matrix, and biomineralization pathways. Finally, we consider how understanding the biological control of coral biomineralization is critical to informing future models of coral vulnerability to inevitable global change, particularly increasing ocean acidification.
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Affiliation(s)
- Jeana L Drake
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
| | - Tali Mass
- Department of Marine Biology, The Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
| | | | - Stanislas Von Euw
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | | | - Paul G Falkowski
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, USA
- Department of Earth and Planetary Sciences, Rutgers University, New Brunswick, NJ, USA
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15
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Wang Y, Wang Y, Wang J, Zhao F, Xu Z, Yuan Z, Niu X, Li L, Bai S, Shi Y, Guo X. Mineralized Supramolecular Hydrogels Bearing Tunable Thermo-Responsiveness. Macromol Rapid Commun 2019; 40:e1900516. [PMID: 31692166 DOI: 10.1002/marc.201900516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/08/2019] [Indexed: 12/29/2022]
Abstract
Although a variety of biomimetic mineralized materials have been created in the lab, the vast majority of these manmade examples lack response to external stimuli. Here, mineralized supramolecular hydrogels with on-demand thermo-responsiveness that are formed by a simple, physical crosslinking between amorphous CaCO3 (ACC) nanoparticles and poly(acrylic acid) (PAA) are reported. Upon the addition of Na2 CO3 solution into a mixture composed of PAA and CaCl2 , amorphous ACC nanoparticles are formed in situ and simultaneously crosslinked by PAA chains, giving rise to the mineralized hydrogels. Interestingly, upon tuning the content of the formed ACC, hydrogels with different types of thermo-responsiveness can be easily obtained, and the transparencies of the resulting hydrogels are dramatically changed during the temperature-driven phase transitions. As an application, these thermo-responsive mineralized hydrogels are used to control the exposure of UV light, which is successfully applied to switch fluorescent signals in response to temperature.
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Affiliation(s)
- Yu Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Yiming Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Jie Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Fang Zhao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Zhi Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Zhenyu Yuan
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Xiaofeng Niu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Shengyu Bai
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China
| | - Yulin Shi
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, North Fourth Road 221, 832000, Shihezi, P. R. China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237, Shanghai, P. R. China.,Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, North Fourth Road 221, 832000, Shihezi, P. R. China
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16
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Abstract
Nature produces biomineral-based materials with a fascinating set of properties using only a limited number of elements. This set of properties is obtained by closely controlling the structure and local composition of the biominerals. We are far from achieving the same degree of control over the properties of synthetic biomineral-based composites. One reason for this inferior control is our incomplete understanding of the influence of the synthesis conditions and additives on the structure and composition of the forming biominerals. In this Review, we provide an overview of the current understanding of the influence of synthesis conditions and additives during different formation stages of CaCO3 , one of the most abundant biominerals, on the structure, composition, and properties of the resulting CaCO3 crystals. In addition, we summarize currently known means to tune these parameters. Throughout the Review, we put special emphasis on the role of water in mediating the formation of CaCO3 and thereby influencing its structure and properties, an often overlooked aspect that is of high relevance.
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Affiliation(s)
- Huachuan Du
- Soft Materials Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Esther Amstad
- Soft Materials Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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17
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Wang C, Yu F, Liu X, Chen S, Wu R, Zhao R, Hu F, Yuan H. Cancer-Specific Therapy by Artificial Modulation of Intracellular Calcium Concentration. Adv Healthc Mater 2019; 8:e1900501. [PMID: 31368208 DOI: 10.1002/adhm.201900501] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/18/2019] [Indexed: 01/16/2023]
Abstract
Calcium (Ca2+ ) hemeostasis is crucial for the normal function of cellular biochemistry. The abnormal frequency of Ca2+ signaling in cancer cells makes them more vulnerable to Ca2+ modulation than normal cells. Here in this study, a novel cancer-specific therapy by artificially triggering Ca2+ overload in cancer cells is proposed. The feasibility of this therapy is illustrated by successful coupling of selective extrusion (Ca2+ ) inhibition effect of Curcumin (Cur) and the effective Ca2+ generating capability of amorphous calcium carbonate (ACC) into a facilely prepared water responsive phospholipid (PL)-ACC hybrid platform (PL/ACC-Cur). The obtained results demonstrate that PL/ACC-Cur can specifically boost the intracellular Ca2+ concentration to cause Ca2+ overload and to trigger mitochondria-related apoptosis in MCF-7 cells while sparing normal hepatocyte (L02), which might be a promising approach for effective cancer therapy.
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Affiliation(s)
- Cheng Wang
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
- School of Food Science and Pharmaceutical EngineeringNanjing Normal University No. 1 Wenyuan Road Nanjing 210046 China
| | - Fangying Yu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Xuerong Liu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Shaoqing Chen
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Rui Wu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Rui Zhao
- Sir Run Run Shaw HospitalSchool of MedicineZhejiang University No. 3 Qingchun East Road Hangzhou 310016 China
| | - Fuqiang Hu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Hong Yuan
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
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18
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Hoeher A, Mergelsberg S, Borkiewicz OJ, Dove PM, Michel FM. A new method for in situ structural investigations of nano-sized amorphous and crystalline materials using mixed-flow reactors. Acta Crystallogr A Found Adv 2019; 75:758-765. [PMID: 31475919 PMCID: PMC6718202 DOI: 10.1107/s2053273319008623] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/17/2019] [Indexed: 11/29/2022] Open
Abstract
Structural investigations of amorphous and nanocrystalline phases forming in solution are historically challenging. Few methods are capable of in situ atomic structural analysis and rigorous control of the system. A mixed-flow reactor (MFR) is used for total X-ray scattering experiments to examine the short- and long-range structure of phases in situ with pair distribution function (PDF) analysis. The adaptable experimental setup enables data collection for a range of different system chemistries, initial supersaturations and residence times. The age of the sample during analysis is controlled by adjusting the flow rate. Faster rates allow for younger samples to be examined, but if flow is too fast not enough data are acquired to average out excess signal noise. Slower flow rates form older samples, but at very slow speeds particles settle and block flow, clogging the system. Proper background collection and subtraction is critical for data optimization. Overall, this MFR method is an ideal scheme for analyzing the in situ structures of phases that form during crystal growth in solution. As a proof of concept, high-resolution total X-ray scattering data of amorphous and crystalline calcium phosphates and amorphous calcium carbonate were collected for PDF analysis.
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Affiliation(s)
- Alexandria Hoeher
- Geosciences, Virginia Tech, 4044 Derring Hall, 1405 Perry Street, Blacksburg, VA 24060, USA
| | - Sebastian Mergelsberg
- Geosciences, Virginia Tech, 4044 Derring Hall, 1405 Perry Street, Blacksburg, VA 24060, USA
| | - Olaf J. Borkiewicz
- X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA
| | - Patricia M. Dove
- Geosciences, Virginia Tech, 4044 Derring Hall, 1405 Perry Street, Blacksburg, VA 24060, USA
| | - F. Marc Michel
- Geosciences, Virginia Tech, 4044 Derring Hall, 1405 Perry Street, Blacksburg, VA 24060, USA
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19
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Neira-Carrillo A, Vásquez-Quitral P, Sánchez M, Farhadi-Khouzani M, Aguilar-Bolados H, Yazdani-Pedram M, Cölfen H. Functionalized Multiwalled CNTs in Classical and Nonclassical CaCO 3 Crystallization. Nanomaterials (Basel) 2019; 9:E1169. [PMID: 31443227 DOI: 10.3390/nano9081169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 08/08/2019] [Accepted: 08/10/2019] [Indexed: 11/16/2022]
Abstract
Multiwalled carbon nanotubes (MWCNTs) are interesting high-tech nanomaterials. MWCNTs oxidized and functionalized with itaconic acid and monomethylitaconate were demonstrated to be efficient additives for controlling nucleation of calcium carbonate (CaCO3) via gas diffusion (GD) in classical as well as nonclassical crystallization, yielding aragonite and truncated calcite. For the first time, all amorphous calcium carbonate (ACC) proto-structures, such as proto calcite-ACC, proto vaterite-ACC and proto aragonite-ACC, were synthesized via prenucleation cluster (PNC) intermediates and stabilized at room temperature. The MWCNTs also showed concentration-dependent nucleation promotion and inhibition similar to biomolecules in nature. Incorporation of fluorescein-5-thiosemicarbazide (5-FTSC) dye-labeled MWCNTs into the CaCO3 lattice resulted in fluorescent hybrid nanosized CaCO3. We demonstrate that functionalized MWCNTs offer a good alternative for controlled selective crystallization and for understanding an inorganic mineralization process.
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20
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Demmert B, Schinzel F, Schüßler M, Mondeshki M, Kaschta J, Schubert DW, Jacob DE, Wolf SE. Polymer-Functionalised Nanograins of Mg-Doped Amorphous Calcium Carbonate via a Flow-Chemistry Approach. Materials (Basel) 2019; 12:E1818. [PMID: 31167501 PMCID: PMC6601056 DOI: 10.3390/ma12111818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/29/2019] [Accepted: 06/03/2019] [Indexed: 11/16/2022]
Abstract
Calcareous biominerals typically feature a hybrid nanogranular structure consisting of calcium carbonate nanograins coated with organic matrices. This nanogranular organisation has a beneficial effect on the functionality of these bioceramics. In this feasibility study, we successfully employed a flow-chemistry approach to precipitate Mg-doped amorphous calcium carbonate particles functionalized by negatively charged polyelectrolytes-either polyacrylates (PAA) or polystyrene sulfonate (PSS). We demonstrate that the rate of Mg incorporation and, thus, the ratio of the Mg dopant to calcium in the precipitated amorphous calcium carbonate (ACC), is flow rate dependent. In the case of the PAA-functionalized Mg-doped ACC, we further observed a weak flow rate dependence concerning the hydration state of the precipitate, which we attribute to incorporated PAA acting as a water sorbent; a behaviour which is not present in experiments with PSS and without a polymer. Thus, polymer-dependent phenomena can affect flow-chemistry approaches, that is, in syntheses of functionally graded materials by layer-deposition processes.
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Affiliation(s)
- Benedikt Demmert
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
- Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109 NSW, Australia.
| | - Frank Schinzel
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Martina Schüßler
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Mihail Mondeshki
- Institute for Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Joachim Kaschta
- Department of Materials Science and Engineering (WW), Institute of Polymer Materials (WW5), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Dirk W Schubert
- Department of Materials Science and Engineering (WW), Institute of Polymer Materials (WW5), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
| | - Dorrit E Jacob
- Department of Earth and Planetary Sciences, Macquarie University, Sydney, 2109 NSW, Australia.
| | - Stephan E Wolf
- Department of Materials Science and Engineering (WW), Institute of Glass and Ceramics (WW3), Friedrich-Alexander University Erlangen-Nuremberg (FAU), Martensstrasse 5, D-91058 Erlangen, Germany.
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany.
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21
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Liu X, Wang C, Ma H, Yu F, Hu F, Yuan H. Water-Responsive Hybrid Nanoparticles Codelivering ICG and DOX Effectively Treat Breast Cancer via Hyperthermia-aided DOX Functionality and Drug Penetration. Adv Healthc Mater 2019; 8:e1801486. [PMID: 30856296 DOI: 10.1002/adhm.201801486] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 02/20/2019] [Indexed: 01/10/2023]
Abstract
Tumor growth and metastasis are the major causes of high mortality in breast cancer. In this study, a water-responsive phospholipid-calcium-carbonate hybrid nanoparticle (PL/ACC-DOX&ICG) surface modified with a phospholipid shell is designed and covered with a shielding polymer polyethylene glycol; this development is loaded with the photosensitizer indocyanine green (ICG) and the chemotherapeutic drug doxorubicin (DOX) for near-infrared (NIR) imaging and chemophotothermal combination therapy against breast cancer. PL/ACC-DOX&ICG exhibits satisfactory stability against various aqueous environments with minimal drug leakage and can readily decompose to facilitate quick drug release into cancer cells. In vivo biodistribution studies, PL/ACC-DOX&ICG demonstrated strong tumor-homing properties. Interestingly, the in vitro cellular uptake and intratumoral penetration depth of PL/ACC-DOX&ICG are significantly enhanced under NIR laser irradiation, owing to ICG-induced hyperthermia, which not only enhances cell permeability and fluidity but also disrupts the dense tumor extracellular matrix. Compared to chemotherapy or photothermal therapy alone, chemophotothermal combination therapy synergistically induces apoptosis and death in 4T1 cells. Moreover, compared with the phosphate buffer saline group, the combined treatment suppress primary tumor growth at a rate of approximately 94.88% and decrease the number of metastatic nodules by about 93.6%. Therefore, PL/ACC-DOX&ICG may be a promising nanoplatform for breast cancer treatment.
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Affiliation(s)
- Xuerong Liu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Cheng Wang
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Huisong Ma
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Fangying Yu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Fuqiang Hu
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Hong Yuan
- College of Pharmaceutical SciencesZhejiang University 866 Yuhangtang Road Hangzhou 310058 China
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22
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Wang C, Han M, Liu X, Chen S, Hu F, Sun J, Yuan H. Mitoxantrone-preloaded water-responsive phospholipid- amorphous calcium carbonate hybrid nanoparticles for targeted and effective cancer therapy. Int J Nanomedicine 2019; 14:1503-1517. [PMID: 30880961 PMCID: PMC6396884 DOI: 10.2147/ijn.s193976] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The application of mitoxantrone (MIT) in cancer therapy has been severely limited by its inherent drawbacks. In addition, effective cancer therapy calls for drug release systems capable of enforcing drug release within cancer cells in response to infinite stimulant with enhanced drug penetration capability. METHODS MIT-preloaded phospholipid-amorphous calcium carbonate hybrid nanoparticles (PL/ACC-MIT) that surface modified with PL shell (containing shielding polymer polyethylene glycol and targeting moiety folic acid) were prepared by a facile solvent-diffusion method. RESULTS It has been proven that the resulting PL/ACC-MIT nanoparticles demonstrated satisfactory stability against various aqueous environments with minimal drug leakage and exerted strong targeting capability but selective preference to the folate receptor-overexpressing cell line. In contrast, once exposed to the enzyme-abundant and acidic environments of cancer cells, the PL/ACC-MIT nanoparticles can readily decompose to facilitate quick drug release and enhanced drug penetration to yield preferable antitumor effect both in vitro and in vivo. CONCLUSION In this study, MIT-preloaded water-responsive hybrid nanoparticles with increased stability, targetability, controlled drug release, and enhanced drug penetration were successfully developed, which might be a candidate for targeted and effective cancer therapy.
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Affiliation(s)
- Cheng Wang
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
| | - Min Han
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
- Hangzhou Zhongmei Huadong Pharmaceutical Co, Ltd, Hangzhou 310011, China
| | - Xuerong Liu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
| | - Shaoqing Chen
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
| | - Fuqiang Hu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
| | - Jihong Sun
- Department of Radiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China,
| | - Hong Yuan
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China,
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23
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Tan M, Liu W, Liu F, Zhang W, Gao H, Cheng J, Chen Y, Wang Z, Cao Y, Ran H. Silk Fibroin-Coated Nanoagents for Acidic Lysosome Targeting by a Functional Preservation Strategy in Cancer Chemotherapy. Am J Cancer Res 2019; 9:961-973. [PMID: 30867809 PMCID: PMC6401409 DOI: 10.7150/thno.30765] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 01/07/2019] [Indexed: 01/07/2023] Open
Abstract
Background: Premature drug leakage and inefficient cellular uptake are stand out as considerable hurdles for low drug delivery efficiency in tumor chemotherapy. Thus, we established a novel drug delivery and transportation strategy mediated by biocompatible silk fibroin (SF)-coated nanoparticles to overcome these therapeutic hurdles. Methods: we first synthesised a TME-responsive biocompatible nanoplatform constructed of amorphous calcium carbonate (ACC) cores and SF shells for enhanced chemotherapy by concurrently inhibiting premature drug release, achieving lysosome-targeted explosion and locally sprayed DOX, and monitoring via PAI, which was verified both in vitro and in vivo. Results: The natural SF polymer first served as a “gatekeeper” to inhibit a drug from prematurely leaking into the circulation was demonstrated both in vitro and in vivo. Upon encountering TMEs and targeting to the acidic pH environments of lysosomes, the sensitive ACC nanoparticles were gradually degraded, eventually generating a large amount of Ca2+ and CO2, resulting in lysosomal collapse, thus preventing both the efflux of DOX from cancer cells and the protonation of DOX within the lysosome, releasing multiple hydrolytic enzyme to cytoplasm, exhibiting the optimal therapeutic dose and remarkable synergetic therapeutic performance. In particular, CO2 gas generated by the pH response of ACC nanocarriers demonstrated their imaging capability for PAI, providing the potential for quantifying and guiding drug release in targets. Conclusion: In this work, we constructed TME-responsive biocompatible NPs by coating DOX-preloaded ACC-DOX clusters with SF via a bioinspired mineralization method for efficient therapeutics. This functional lysosome-targeted preservation-strategy-based therapeutic system could provid novel insights into cancer chemotherapy.
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24
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Blondeau M, Sachse M, Boulogne C, Gillet C, Guigner JM, Skouri-Panet F, Poinsot M, Ferard C, Miot J, Benzerara K. Amorphous Calcium Carbonate Granules Form Within an Intracellular Compartment in Calcifying Cyanobacteria. Front Microbiol 2018; 9:1768. [PMID: 30127775 PMCID: PMC6087745 DOI: 10.3389/fmicb.2018.01768] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 07/16/2018] [Indexed: 12/17/2022] Open
Abstract
The recent discovery of cyanobacteria forming intracellular amorphous calcium carbonate (ACC) has challenged the former paradigm suggesting that cyanobacteria-mediated carbonatogenesis was exclusively extracellular. Yet, the mechanisms of intracellular biomineralization in cyanobacteria and in particular whether this takes place within an intracellular microcompartment, remain poorly understood. Here, we analyzed six cyanobacterial strains forming intracellular ACC by transmission electron microscopy. We tested two different approaches to preserve as well as possible the intracellular ACC inclusions: (i) freeze-substitution followed by epoxy embedding and room-temperature ultramicrotomy and (ii) high-pressure freezing followed by cryo-ultramicrotomy, usually referred to as cryo-electron microscopy of vitreous sections (CEMOVIS). We observed that the first method preserved ACC well in 500-nm-thick sections but not in 70-nm-thick sections. However, cell ultrastructures were difficult to clearly observe in the 500-nm-thick sections. In contrast, CEMOVIS provided a high preservation quality of bacterial ultrastructures, including the intracellular ACC inclusions in 50-nm-thick sections. ACC inclusions displayed different textures, suggesting varying brittleness, possibly resulting from different hydration levels. Moreover, an electron dense envelope of ∼2.5 nm was systematically observed around ACC granules in all studied cyanobacterial strains. This envelope may be composed of a protein shell or a lipid monolayer, but not a lipid bilayer as usually observed in other bacteria forming intracellular minerals. Overall, this study evidenced that ACC inclusions formed and were stabilized within a previously unidentified bacterial microcompartment in some species of cyanobacteria.
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Affiliation(s)
- Marine Blondeau
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Martin Sachse
- Unité Technologie et Service BioImagerie Ultrastructurale, Citech, Institut Pasteur, Paris, France
| | - Claire Boulogne
- CEA, Centre National de la Recherche Scientifique, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Cynthia Gillet
- CEA, Centre National de la Recherche Scientifique, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Jean-Michel Guigner
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Fériel Skouri-Panet
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Mélanie Poinsot
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Céline Ferard
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Jennyfer Miot
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
| | - Karim Benzerara
- UMR CNRS 7590, IRD, Muséum National d'Histoire Naturelle, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Paris, France
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25
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Sun R, Zhang P, Bajnóczi ÉG, Neagu A, Tai CW, Persson I, Strømme M, Cheung O. Amorphous Calcium Carbonate Constructed from Nanoparticle Aggregates with Unprecedented Surface Area and Mesoporosity. ACS Appl Mater Interfaces 2018; 10:21556-21564. [PMID: 29862822 DOI: 10.1021/acsami.8b03939] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Amorphous calcium carbonate (ACC), with the highest reported specific surface area of all current forms of calcium carbonate (over 350 m2 g-1), was synthesized using a surfactant-free, one-pot method. Electron microscopy, helium pycnometry, and nitrogen sorption analysis revealed that this highly mesoporous ACC, with a pore volume of ∼0.86 cm3 g-1 and a pore-size distribution centered at 8-9 nm, is constructed from aggregated ACC nanoparticles with an estimated average diameter of 7.3 nm. The porous ACC remained amorphous and retained its high porosity for over 3 weeks under semi-air-tight storage conditions. Powder X-ray diffraction, large-angle X-ray scattering, infrared spectroscopy, and electron diffraction exposed that the porous ACC did not resemble any of the known CaCO3 structures. The atomic order of porous ACC diminished at interatomic distances over 8 Å. Porous ACC was evaluated as a potential drug carrier of poorly soluble substances in vitro. Itraconazole and celecoxib remained stable in their amorphous forms within the pores of the material. Drug release rates were significantly enhanced for both drugs (up to 65 times the dissolution rates for the crystalline forms), and supersaturation release of celecoxib was also demonstrated. Citric acid was used to enhance the stability of the ACC nanoparticles within the aggregates, which increased the surface area of the material to over 600 m2 g-1. This porous ACC has potential for use in various applications where surface area is important, including adsorption, catalysis, medication, and bone regeneration.
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Affiliation(s)
- Rui Sun
- Division of Nanotechnology and Functional Materials, Department of Engineering Sciences , Uppsala University , SE-751 21 Uppsala , Sweden
| | - Peng Zhang
- Division of Nanotechnology and Functional Materials, Department of Engineering Sciences , Uppsala University , SE-751 21 Uppsala , Sweden
- Department of Materials and Environmental Chemistry , Stockholm University , SE-106 91 Stockholm , Sweden
| | - Éva G Bajnóczi
- Department of Molecular Sciences , Swedish University of Agricultural Sciences , SE-750 07 Uppsala , Sweden
| | - Alexandra Neagu
- Department of Materials and Environmental Chemistry , Stockholm University , SE-106 91 Stockholm , Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry , Stockholm University , SE-106 91 Stockholm , Sweden
| | - Ingmar Persson
- Department of Molecular Sciences , Swedish University of Agricultural Sciences , SE-750 07 Uppsala , Sweden
| | - Maria Strømme
- Division of Nanotechnology and Functional Materials, Department of Engineering Sciences , Uppsala University , SE-751 21 Uppsala , Sweden
| | - Ocean Cheung
- Division of Nanotechnology and Functional Materials, Department of Engineering Sciences , Uppsala University , SE-751 21 Uppsala , Sweden
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26
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Albéric M, Bertinetti L, Zou Z, Fratzl P, Habraken W, Politi Y. The Crystallization of Amorphous Calcium Carbonate is Kinetically Governed by Ion Impurities and Water. Adv Sci (Weinh) 2018; 5:1701000. [PMID: 29876222 PMCID: PMC5980180 DOI: 10.1002/advs.201701000] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 01/12/2018] [Indexed: 05/17/2023]
Abstract
Many organisms use amorphous calcium carbonate (ACC) and control its stability by various additives and water; however, the underlying mechanisms are yet unclear. Here, the effect of water and inorganic additives commonly found in biology on the dynamics of the structure of ACC during crystallization and on the energetics of this process is studied. Total X-ray scattering and pair distribution function analysis show that the short- and medium-range order of all studied ACC samples are similar; however, the use of in situ methodologies allow the observation of small structural modifications that are otherwise easily overlooked. Isothermal calorimetric coupled with microgravimetric measurements show that the presence of Mg2+ and of PO43- in ACC retards the crystallization whereas increased water content accelerates the transformation. The enthalpy of ACC with respect to calcite appears, however, independent of the additive concentration but decreases with water content. Surprisingly, the enthalpic contribution of water is compensated for by an equal and opposite entropic term leading to a net independence of ACC thermodynamic stability on its hydration level. Together, these results point toward a kinetic stabilization effect of inorganic additives and water, and may contribute to the understanding of the biological control of mineral stability.
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Affiliation(s)
- Marie Albéric
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Luca Bertinetti
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Zhaoyong Zou
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Peter Fratzl
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Wouter Habraken
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Yael Politi
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
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27
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Wang C, Chen S, Wang Y, Liu X, Hu F, Sun J, Yuan H. Lipase-Triggered Water-Responsive "Pandora's Box" for Cancer Therapy: Toward Induced Neighboring Effect and Enhanced Drug Penetration. Adv Mater 2018; 30:e1706407. [PMID: 29484719 DOI: 10.1002/adma.201706407] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/12/2018] [Indexed: 05/20/2023]
Abstract
Insufficient drug release as well as poor drug penetration are major obstacles for effective nanoparticles (NPs)-based cancer therapy. Herein, the high aqueous instability of amorphous calcium carbonate (ACC) is employed to construct doxorubicin (DOX) preloaded and monostearin (MS) coated "Pandora's box" (MS/ACC-DOX) NPs for lipase-triggered water-responsive drug release in lipase-overexpressed tumor tissue to induce a neighboring effect and enhance drug penetration. MS as a solid lipid can prevent potential drug leakage of ACC-DOX NPs during the circulatory process, while it can be readily be disintegrated in lipase-overexpressed SKOV3 cells to expose the ACC-DOX core. The high aqueous instability of ACC will lead to burst release of the encapsulated DOX to induce apoptosis and cytotoxicity to kill the tumor cells. The liberated NPs from the dead or dying cells continue to respond to the ubiquitous aqueous environment to sufficiently release DOX once unpacked, like the "Pandora's box", leading to severe cytotoxicity to neighboring cells (neighboring effect). Moreover, the continuously released free DOX molecules can readily diffused through the tumor extracellular matrix to enhance drug penetration to deep tumor tissue. Both effects contribute to achieve elevated antitumor benefits.
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Affiliation(s)
- Cheng Wang
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Shaoqing Chen
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Yunxin Wang
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Xuerong Liu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Fuqiang Hu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Jihong Sun
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No. 3 Qingchun East Road, Hangzhou, 310016, China
| | - Hong Yuan
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
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28
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Dhand C, Barathi VA, Ong ST, Venkatesh M, Harini S, Dwivedi N, Goh ETL, Nandhakumar M, Venugopal JR, Diaz SM, Fazil MHUT, Loh XJ, Ping LS, Beuerman RW, Verma NK, Ramakrishna S, Lakshminarayanan R. Latent Oxidative Polymerization of Catecholamines as Potential Cross-linkers for Biocompatible and Multifunctional Biopolymer Scaffolds. ACS Appl Mater Interfaces 2016; 8:32266-32281. [PMID: 27800687 DOI: 10.1021/acsami.6b12544] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electrospinning of naturally occurring biopolymers for biological applications requires postspinning cross-linking for endurance in protease-rich microenvironments and prevention of rapid dissolution. The most commonly used cross-linkers often generate cytotoxic byproducts, which necessitate high concentrations or time-consuming procedures. Herein, we report the addition of "safe" catecholamine cross-linkers to collagen or gelatin dope solutions followed by electrospinning yielded junction-containing nanofibrous mats. Subsequent in situ oxidative polymerization of the catecholamines increased the density of soldered junctions and maintained the porous nanofiber architecture. This protocol imparted photoluminescence to the biopolymers, a smooth noncytotoxic coating, and good mechanical/structural stability in aqueous solutions. The utility of our approach was demonstrated by the preparation of durable antimicrobial wound dressings and mineralized osteoconductive scaffolds via peptide antibiotics and calcium chloride (CaCl2) incorporation into the dope solutions. The mineralized composite mats consist of amorphous calcium carbonate that enhanced the osteoblasts cell proliferation, differentiation, and expression of important osteogenic marker proteins. In proof-of-concept experiments, antibiotic-loaded mats displayed superior antimicrobial properties relative to silver (Ag)-based dressings, and accelerated wound healing in a porcine deep dermal burn injury model.
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Affiliation(s)
- Chetna Dhand
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Veluchamy Amutha Barathi
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School , Singapore 169857, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore 119077, Singapore
| | - Seow Theng Ong
- Lee Kong Chian School of Medicine, Nanyang Technological University , Experimental Medicine Building, 59 Nanyang Drive, Singapore 636921, Singapore
| | - Mayandi Venkatesh
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Sriram Harini
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Neeraj Dwivedi
- Department of Electrical and Computer Engineering, National University of Singapore , 3 Engineering Drive 3, Singapore 117583, Singapore
| | - Eunice Tze Leng Goh
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Muruganantham Nandhakumar
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Jayarama Reddy Venugopal
- Center for Nanofibers and Nanotechnology and Department of Mechanical Engineering, National University of Singapore , Singapore 117576, Singapore
| | - Silvia Marrero Diaz
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Mobashar Hussain Urf Turabe Fazil
- Lee Kong Chian School of Medicine, Nanyang Technological University , Experimental Medicine Building, 59 Nanyang Drive, Singapore 636921, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A *STAR) , Singapore 117602, Singapore
| | - Liu Shou Ping
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School , Singapore 169857, Singapore
| | - Roger W Beuerman
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School , Singapore 169857, Singapore
| | - Navin Kumar Verma
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University , Experimental Medicine Building, 59 Nanyang Drive, Singapore 636921, Singapore
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology and Department of Mechanical Engineering, National University of Singapore , Singapore 117576, Singapore
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), Jinan University , Guangzhou 510632, China
| | - Rajamani Lakshminarayanan
- Anti-Infectives Research Group, Singapore Eye Research Institute , The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School , Singapore 169857, Singapore
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Farhadi-Khouzani M, Chevrier DM, Zhang P, Hedin N, Gebauer D. Water as the Key to Proto-Aragonite Amorphous CaCO3. Angew Chem Int Ed Engl 2016; 55:8117-20. [PMID: 27254155 DOI: 10.1002/anie.201603176] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Indexed: 12/15/2022]
Abstract
Temperature and pH value can affect the short-range order of proto-structured and additive-free amorphous calcium carbonates (ACCs). Whereas a distinct change occurs in proto-vaterite (pv) ACC above 45 °C at pH 9.80, proto-calcite (pc) ACC (pH 8.75) is unaffected within the investigated range of temperatures (7-65 °C). IR and NMR spectroscopic studies together with EXAFS analysis showed that the temperature-induced change is related to the formation of proto-aragonite (pa) ACC. The data strongly suggest that the binding of water molecules induces dipole moments across the carbonate ions in pa-ACC as in aragonite, where the dipole moments are due to the symmetry of the crystal structure. Altogether, a (pseudo-)phase diagram of the CaCO3 polyamorphism in which water plays a key role can be formulated based on variables of state, such as the temperature, and solution parameters, such as the pH value.
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Affiliation(s)
- Masoud Farhadi-Khouzani
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, Box 714, 78457, Konstanz, Germany
| | - Daniel M Chevrier
- Department of Chemistry & School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Peng Zhang
- Department of Chemistry & School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Niklas Hedin
- Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden
| | - Denis Gebauer
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstrasse 10, Box 714, 78457, Konstanz, Germany.
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Luquet G, Dauphin Y, Percot A, Salomé M, Ziegler A, Fernández MS, Arias JL. Calcium Deposits in the Crayfish, Cherax quadricarinatus: Microstructure Versus Elemental Distribution. Microsc Microanal 2016; 22:22-38. [PMID: 26818557 DOI: 10.1017/s1431927615015767] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The crayfish Cherax quadricarinatus stores calcium ions, easily mobilizable after molting, for calcifying parts of the new exoskeleton. They are chiefly stored as amorphous calcium carbonate (ACC) during each premolt in a pair of gastroliths synthesized in the stomach wall. How calcium carbonate is stabilized in the amorphous state in such a biocomposite remains speculative. The knowledge of the microstructure at the nanometer level obtained by field emission scanning electron microscopy and atomic force microscopy combined with scanning electron microscopy energy-dispersive X-ray spectroscopy, micro-Raman and X-ray absorption near edge structure spectroscopy gave relevant information on the elaboration of such an ACC-stabilized biomineral. We observed nanogranules distributed along chitin-protein fibers and the aggregation of granules in thin layers. AFM confirmed the nanolevel structure, showing granules probably surrounded by an organic layer and also revealing a second level of aggregation as described for other crystalline biominerals. Raman analyses showed the presence of ACC, amorphous calcium phosphate, and calcite. Elemental analyses confirmed the presence of elements like Fe, Na, Mg, P, and S. P and S are heterogeneously distributed. P is present in both the mineral and organic phases of gastroliths. S seems present as sulfate (probably as sulfated sugars), sulfonate, sulfite, and sulfoxide groups and, in a lesser extent, as sulfur-containing amino acids.
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Affiliation(s)
- Gilles Luquet
- 1Sorbonne Universités,Biologie des Organismes et des Ecosystèmes Aquatiques (BOREA),UMR MNHN/CNRS-7208/UPMC/UCN/UA/IRD-207,Muséum National d'Histoire Naturelle,75005 Paris,France
| | - Yannicke Dauphin
- 2Sorbonne Universités,Département Systèmatique et Evolution,Mammifères et Oiseaux,Muséum National d'Histoire Naturelle,75005 Paris,France
| | - Aline Percot
- 3Sorbonne Universités,MONARIS, UMR 8233 CNRS/UPMC,Université Paris 06,75005 Paris,France
| | - Murielle Salomé
- 4ID21, European Synchrotron Radiation Facility,38000 Grenoble,France
| | - Andreas Ziegler
- 5Central Facility for Electron Microscopy,University of Ulm,89069 Ulm,Germany
| | - Maria S Fernández
- 6Faculty of Veterinary and Animal Sciences,University of Chile,Santiago de Chile,Chile
| | - José L Arias
- 6Faculty of Veterinary and Animal Sciences,University of Chile,Santiago de Chile,Chile
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Tewes F, Gobbo OL, Ehrhardt C, Healy AM. Amorphous Calcium Carbonate Based-Microparticles for Peptide Pulmonary Delivery. ACS Appl Mater Interfaces 2016; 8:1164-1175. [PMID: 26692360 DOI: 10.1021/acsami.5b09023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Amorphous calcium carbonate (ACC) is known to interact with proteins, for example, in biogenic ACC, to form stable amorphous phases. The control of amorphous/crystalline and inorganic/organic ratios in inhalable calcium carbonate microparticles may enable particle properties to be adapted to suit the requirements of dry powders for pulmonary delivery by oral inhalation. For example, an amorphous phase can immobilize and stabilize polypeptides in their native structure and amorphous and crystalline phases have different mechanical properties. Therefore, inhalable composite microparticles made of inorganic (i.e., calcium carbonate and calcium formate) and organic (i.e., hyaluronan (HA)) amorphous and crystalline phases were investigated for peptide and protein pulmonary aerosol delivery. The crystalline/amorphous ratio and polymorphic form of the inorganic component was altered by changing the microparticle drying rate and by changing the ammonium carbonate and HA initial concentration. The bioactivity of the model peptide, salmon calcitonin (sCT), coprocessed with alpha-1-antitrypsin (AAT), a model protein with peptidase inhibitor activity, was maintained during processing and the microparticles had excellent aerodynamic properties, making them suitable for pulmonary aerosol delivery. The bioavailability of sCT after aerosol delivery as sCT and AAT-loaded composite microparticles to rats was 4-times higher than that of sCT solution.
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Affiliation(s)
- Frederic Tewes
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin , Dublin 2, Ireland
- INSERM U 1070, Pôle Biologie-Santé, Université de Poitiers , Faculté de Médecine & Pharmacie, 1 Rue Georges Bonnet, 86022 Poitiers Cedex, France
| | - Oliviero L Gobbo
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin , Dublin 2, Ireland
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin , Dublin 2, Ireland
| | - Anne Marie Healy
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin , Dublin 2, Ireland
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Tewes F, Brillault J, Lamy B, O'Connell P, Olivier JC, Couet W, Healy AM. Ciprofloxacin-Loaded Inorganic-Organic Composite Microparticles To Treat Bacterial Lung Infection. Mol Pharm 2015; 13:100-12. [PMID: 26641021 DOI: 10.1021/acs.molpharmaceut.5b00543] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Ciprofloxacin (CIP) is an antibiotic that has been clinically trialed for the treatment of lung infections by aerosolization. However, CIP is rapidly systemically absorbed after lung administration, increasing the risk for subtherapeutic pulmonary concentrations and resistant bacteria selection. In the presence of calcium, CIP forms complexes that reduce its oral absorption. Such complexation may slow down CIP absorption from the lung thereby maintaining high concentration in this tissue. Thus, we developed inhalable calcium-based inorganic-organic composite microparticles to sustain CIP within the lung. The aerodynamics and micromeritic properties of the microparticles were characterized. FTIR and XRD analysis suggest that the inorganic component of the particles comprised amorphous calcium carbonate and amorphous calcium formate, and that CIP and calcium interact in a 1:1 stoichiometry in the particles. CIP was completely released from the microparticles within 7 h, with profiles showing a slight dependence on pH (5 and 7.4) compared to the dissolution of pure CIP. Transport studies of CIP across Calu-3 cell monolayers, in the presence of various calcium concentrations, showed a decrease of up to 84% in CIP apparent permeability. The apparent minimum inhibitory concentration of CIP against Pseudomonas aeruginosa and Staphylococcus aureus was not changed in the presence of the same calcium concentration. These results indicate that the designed particles should provide sustained levels of CIP with therapeutic effect in the lung. With these microparticles, it should be possible to control CIP pharmacokinetics within the lung, based on controlled CIP release from the particles and reduced apparent permeability across the epithelial barrier due to the cation-CIP interaction.
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Affiliation(s)
- Frederic Tewes
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France.,School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
| | - Julien Brillault
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Barbara Lamy
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Peter O'Connell
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
| | - Jean-Christophe Olivier
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - William Couet
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Anne Marie Healy
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
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Benzerara K, Skouri-Panet F, Li J, Férard C, Gugger M, Laurent T, Couradeau E, Ragon M, Cosmidis J, Menguy N, Margaret-Oliver I, Tavera R, López-García P, Moreira D. Intracellular Ca-carbonate biomineralization is widespread in cyanobacteria. Proc Natl Acad Sci U S A 2014; 111:10933-8. [PMID: 25009182 DOI: 10.1073/pnas.1403510111] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cyanobacteria have played a significant role in the formation of past and modern carbonate deposits at the surface of the Earth using a biomineralization process that has been almost systematically considered induced and extracellular. Recently, a deep-branching cyanobacterial species, Candidatus Gloeomargarita lithophora, was reported to form intracellular amorphous Ca-rich carbonates. However, the significance and diversity of the cyanobacteria in which intracellular biomineralization occurs remain unknown. Here, we searched for intracellular Ca-carbonate inclusions in 68 cyanobacterial strains distributed throughout the phylogenetic tree of cyanobacteria. We discovered that diverse unicellular cyanobacterial taxa form intracellular amorphous Ca-carbonates with at least two different distribution patterns, suggesting the existence of at least two distinct mechanisms of biomineralization: (i) one with Ca-carbonate inclusions scattered within the cell cytoplasm such as in Ca. G. lithophora, and (ii) another one observed in strains belonging to the Thermosynechococcus elongatus BP-1 lineage, in which Ca-carbonate inclusions lie at the cell poles. This pattern seems to be linked with the nucleation of the inclusions at the septum of the cells, showing an intricate and original connection between cell division and biomineralization. These findings indicate that intracellular Ca-carbonate biomineralization by cyanobacteria has been overlooked by past studies and open new perspectives on the mechanisms and the evolutionary history of intra- and extracellular Ca-carbonate biomineralization by cyanobacteria.
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Abstract
For growing, crustaceans have to molt cyclically because of the presence of a rigid exoskeleton. Most of the crustaceans harden their cuticle not only by sclerotization, like all the arthropods, but also by calcification. All the physiology of crustaceans, including the calcification process, is then linked to molting cycles. This means for these animals to find regularly a source of calcium ions quickly available just after ecdysis. The sources of calcium used are diverse, ranging from the environment where the animals live to endogenous calcium deposits cyclically elaborated by some of them. As a result, crustaceans are submitted to an important and energetically demanding calcium turnover throughout their life. The mineralization process occurs by precipitation of calcium carbonate within an organic matrix network of chitin-proteins fibers. Both crystalline and stabilized amorphous polymorphs of calcium carbonate are found in crustacean biominerals. Furthermore, Crustacea is the only phylum of animals able to elaborate and resorb periodically calcified structures. Notably for these two previous reasons, crustaceans are more and more extensively studied and considered as models of choice in the biomineralization research area.
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Affiliation(s)
- Gilles Luquet
- Biogéosciences, UMR 5561 CNRS - Université de Bourgogne, Dijon, France
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