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Zhang Y, Sun W, Cui Z, Wang Y, Li W, Zhou C, Run M, Guo S, Qin J. Self-healing hydrogel from poly(aspartic acid) and dextran with antibacterial property for burn wound healing. Int J Biol Macromol 2024; 279:135149. [PMID: 39214218 DOI: 10.1016/j.ijbiomac.2024.135149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 08/24/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
Designing hydrogel dressing with intrinsic antibacterial property to promote skin injury recovery remains a significant challenge. In this research, poly(aspartic hydrazide) with grafted betaine (PAHB) was designed and reacted with oxidized dextran (OD) to fabricate biodegradable PAHB/OD hydrogel and its application as wound dressing was systematically investigated. The PAHB/OD hydrogels exhibited fast gelation, strong tissue adhesion, preferable mechanical properties and biocompatibility. The grafted betaine endowed the hydrogel with antibacterial property and antibacterial rate enhanced through photothermal performance of composited CuS nanoparticles under near infrared (NIR) radiation. The CuS composited PAHB/OD hydrogel (CuS/hydrogel) with microporous morphology was used as burn wound dressing with loaded anti-inflammatory drug diclofenac sodium (DS) in mouse model. The results showed the DS loaded CuS/hydrogel (CuS@DS/hydrogel) promoted the tissue regeneration and suppressed the inflammatory response. The histological analysis and immunohistochemical expression confirmed the CuS@DS/hydrogel promote angiogenesis of the burn wound by regulating the expression of inflammatory cytokines (IL-6 and CD68) and vascular endothelial growth factor (VEGF). Overall, the CuS@DS/hydrogel hydrogel is a promising candidate as wound dressing due to its tissue adhesive, antioxidant, antibacterial and anti-inflammatory activities.
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Affiliation(s)
- Yu Zhang
- College of Chemistry and Materials Science, Hebei University, Baoding City, Hebei Province 071002, China
| | - Weichen Sun
- College of Chemistry and Materials Science, Hebei University, Baoding City, Hebei Province 071002, China
| | - Zhe Cui
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Yong Wang
- Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases in Hebei Province, Hebei University, Baoding City, Hebei Province 071002, China
| | - Wenjuan Li
- Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases in Hebei Province, Hebei University, Baoding City, Hebei Province 071002, China
| | - Chengyan Zhou
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China
| | - Mingtao Run
- College of Chemistry and Materials Science, Hebei University, Baoding City, Hebei Province 071002, China
| | - Shuai Guo
- School of Life Sciences, Hebei University, Baoding City, Hebei Province 071002, China.
| | - Jianglei Qin
- College of Chemistry and Materials Science, Hebei University, Baoding City, Hebei Province 071002, China; School of Life Sciences, Hebei University, Baoding City, Hebei Province 071002, China.
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Chiang PY, Zeng PH, Yeh YC. Luminescent lanthanide-containing gelatin/polydextran/laponite nanocomposite double-network hydrogels for processing and sensing applications. Int J Biol Macromol 2024; 260:129359. [PMID: 38242388 DOI: 10.1016/j.ijbiomac.2024.129359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/29/2023] [Accepted: 01/08/2024] [Indexed: 01/21/2024]
Abstract
Lanthanide-containing nanomaterials have gained significant popularity for their utilization in polymeric networks, enabling the creation of luminescent nanocomposites for advanced applications. In this study, we developed a new type of lanthanide-containing nanocomposite hydrogels by incorporating terbium-containing laponite (Tb3+@Lap) into the networks of polyethyleneimine-modified gelatin/polydextran aldehyde (PG/PDA) through dynamic bonds. The structures and properties of the Tb3+@Lap-containing nanocomposite double-network (ncDN) hydrogels were comprehensively investigated in comparison with the DN hydrogels with a pure polymeric network and the Lap-containing ncDN hydrogels. The PG/PDA/Tb3+@Lap ncDN hydrogels with multiple dynamic bonds (i.e., imine bonds, coordination bonds, hydrogen bonds, and electrostatic interactions) exhibited remarkable characteristics of shear-thinning and self-healing, making them suitable for the construction of hydrogel scaffolds on a macroscale using fabrication techniques such as electrospinning and 3D printing. Moreover, the PG/PDA/Tb3+@Lap ncDN hydrogels have been demonstrated to act as sensitive and selective luminescent sensors for detecting copper ions. Taken together, a versatile lanthanide-containing ncDN hydrogel platform capable of dynamic features is developed for processing and sensing applications.
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Affiliation(s)
- Pei-Yu Chiang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Pin-Han Zeng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
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Vakhshiteh F, Bagheri Z, Soleimani M, Ahvaraki A, Pournemat P, Alavi SE, Madjd Z. Heterotypic tumor spheroids: a platform for nanomedicine evaluation. J Nanobiotechnology 2023; 21:249. [PMID: 37533100 PMCID: PMC10398970 DOI: 10.1186/s12951-023-02021-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 07/23/2023] [Indexed: 08/04/2023] Open
Abstract
Nanomedicine has emerged as a promising therapeutic approach, but its translation to the clinic has been hindered by the lack of cellular models to anticipate how tumor cells will respond to therapy. Three-dimensional (3D) cell culture models are thought to more accurately recapitulate key features of primary tumors than two-dimensional (2D) cultures. Heterotypic 3D tumor spheroids, composed of multiple cell types, have become more popular than homotypic spheroids, which consist of a single cell type, as a superior model for mimicking in vivo tumor heterogeneity and physiology. The stromal interactions demonstrated in heterotypic 3D tumor spheroids can affect various aspects, including response to therapy, cancer progression, nanomedicine penetration, and drug resistance. Accordingly, to design more effective anticancer nanomedicinal therapeutics, not only tumor cells but also stromal cells (e.g., fibroblasts and immune cells) should be considered to create a more physiologically relevant in vivo microenvironment. This review aims to demonstrate current knowledge of heterotypic 3D tumor spheroids in cancer research, to illustrate current advances in utilizing these tumor models as a novel and versatile platform for in vitro evaluation of nanomedicine-based therapeutics in cancer research, and to discuss challenges, guidelines, and future directions in this field.
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Affiliation(s)
- Faezeh Vakhshiteh
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Zeinab Bagheri
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, 1983969411, Iran.
| | - Marziye Soleimani
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, 1983969411, Iran
| | - Akram Ahvaraki
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, 1983969411, Iran
| | - Parisa Pournemat
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, 1983969411, Iran
| | - Seyed Ebrahim Alavi
- Faculty of Medicine, Frazer Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
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Sarvestani FS, Tamaddon AM, Yaghoobi R, Geramizadeh B, Azarpira N. Biocompatible scaffolds based on collagen and oxidized dextran for endothelial cell survival and function in tissue engineering. Eng Life Sci 2023; 23:2200140. [PMID: 37408870 PMCID: PMC10317976 DOI: 10.1002/elsc.202200140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 05/24/2023] [Accepted: 05/27/2023] [Indexed: 07/07/2023] Open
Abstract
Angiogenesis is a vital step in tissue regeneration. Hence, the current study aimed to prepare oxidized dextran (Odex)/collagen (Col)-hydrogels with laminin (LMN), as an angiogenic extracellular matrix (ECM) component, for promoting human umbilical vein endothelial cell (HUVEC) proliferation and function. Odex/Col scaffolds were constructed at various concentrations and temperatures. Using oscillatory rheometry, scanning electron microscopy (SEM), and cell viability testing, the scaffolds were characterized, and then HUVEC proliferation and function was compared with or without LMN. The gelation time could be modified by altering the Odex/Col mass ratio as well as the temperature. SEM showed that Odex/Col hydrogels had a more regular three-dimensional (3D) porous structure than the Col hydrogels. Moreover, HUVECs grew faster in the Col scaffold (12 mg/mL), whereas the Odex (30 mg/mL)/Col (6 mg/mL) scaffold exhibited the lowest apoptosis index. Furthermore, the expression level of vascular endothelial growth factor (VEGF) mRNA in the group without LMN was higher than that with LMN, and the Odex (30 mg/mL)/Col (6 mg/mL) scaffold without LMN had the highest VEGF protein secretion, allowing the cells to survive and function effectively. Odex/Col scaffolds, with or without LMN, are proposed as a tissue engineering construct to improve HUVEC survival and function for angiogenesis.
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Affiliation(s)
| | - Ali-Mohammad Tamaddon
- Department of Pharmaceutical Nanotechnology and Center for Nanotechnology in Drug Delivery School of Pharmacy Shiraz University of Medical Sciences Shiraz Iran
| | - Ramin Yaghoobi
- Transplant Research Center Shiraz University of Medical Sciences Shiraz Iran
| | - Bita Geramizadeh
- Transplant Research Center Shiraz University of Medical Sciences Shiraz Iran
| | - Negar Azarpira
- Transplant Research Center Shiraz University of Medical Sciences Shiraz Iran
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Alternative lung cell model systems for toxicology testing strategies: Current knowledge and future outlook. Semin Cell Dev Biol 2023; 147:70-82. [PMID: 36599788 DOI: 10.1016/j.semcdb.2022.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 01/04/2023]
Abstract
Due to the current relevance of pulmonary toxicology (with focus upon air pollution and the inhalation of hazardous materials), it is important to further develop and implement physiologically relevant models of the entire respiratory tract. Lung model development has the aim to create human relevant systems that may replace animal use whilst balancing cost, laborious nature and regulatory ambition. There is an imperative need to move away from rodent models and implement models that mimic the holistic characteristics important in lung function. The purpose of this review is therefore, to describe and identify the various alternative models that are being applied towards assessing the pulmonary toxicology of inhaled substances, as well as the current and potential developments of various advanced models and how they may be applied towards toxicology testing strategies. These models aim to mimic various regions of the lung, as well as implementing different exposure methods with the addition of various physiologically relevent conditions (such as fluid-flow and dynamic movement). There is further progress in the type of models used with focus on the development of lung-on-a-chip technologies and bioprinting, as well as and the optimization of such models to fill current knowledge gaps within toxicology.
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Abdollahzadeh H, Amoabediny G, Haghiralsadat F, Rahimi F, Adibfar A. Liposomal Doxorubicin Kinetic Study in an In vitro 2D and 3D Tumor Model for Osteosarcoma in a Perfusion Bioreactor. Pharm Nanotechnol 2023; 11:447-459. [PMID: 37138490 DOI: 10.2174/2211738511666230501202946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/04/2023] [Accepted: 02/15/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND In vivo drug screening in animal models is contrary to ethical values, costly and time-consuming. Traditional static in vitro models do not reflect the basic characteristics of bone tumor microenvironments; therefore, perfusion bioreactors, in particular, would be an applicable choice due to their advantages to regenerate versatile bone tumor models for studying in vitro novel drug delivery systems. METHODS In this study, an optimal drug formulation of liposomal doxorubicin was prepared, and the release kinetics of the drug and its toxicity effect on MG-63 bone cancer cell line were investigated in two-dimensional, static three-dimensional media on a PLGA/β-TCP scaffold and also in a dynamic media in a perfusion bioreactor. In this assay, the efficacy of the IC50 of this formulation which had been obtained in two-dimensional cell culture (= 0.1 μg/ml), was studied in static and dynamic threedimensional media after 3 and 7 days. Liposomes with good morphology and encapsulation efficiency of 95% had release kinetics of the Korsmeyer-Peppas model. RESULTS The results of cell growth before treatment and cell viability after treatment in all three environments were compared. Cell growth in 2D was rapid, while it was slow in static 3D conditions. In the dynamic 3D environment, it was significant compared to the static tumor models. Cell viability after 3 and 7 days from treatment was 54.73% and 13.39% in 2D conditions, 72.27% and 26.78% in the static 3D model, while 100% and 78.92% in the dynamic culture indicating the effect of drug toxicity over time, but drug resistance of 3D models compared to 2D culture. In the bioreactor, the formulation used in the mentioned concentration showed very small cytotoxicity demonstrating the dominance of mechanical stimuli on cell growth over drug toxicity. CONCLUSION Increasing drug resistance in 3D models compared to 2D models indicates the superiority of liposomal Dox over free form to reduce IC50 concentration.
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Affiliation(s)
- H Abdollahzadeh
- Department of Biotechnology and Pharmaceutical Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - G Amoabediny
- Department of Biotechnology and Pharmaceutical Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
- Department of Biomedical Engineering, Research Center for New Technologies in Life Science Engineering at the University of Tehran, Tehran, Iran
| | - F Haghiralsadat
- Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - F Rahimi
- Medical Biotechnology Department, School of Medical Sciences, and Research Center and Laboratory of New Nano-technology, Shahed University, Tehran, Iran
| | - A Adibfar
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
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Modi U, Kedaria D, Vasita R. Differential Migration and Proliferation Potential of the Hydrogel Aided 3D Tumoroid. Macromol Biosci 2022; 22:e2200196. [PMID: 35997309 DOI: 10.1002/mabi.202200196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/04/2022] [Indexed: 12/25/2022]
Abstract
For substantial in vitro cancer biology research, the 3D cell culture method has now been regarded as more suitable model expected to be recapitulating maximum in vivo tumor mass relevance. Despite of available techniques to develop in vitro 3D models, a system availing a physiologically relevant in vitro 3D model of primary lung adenocarcinoma with extracellular matrix (ECM) mimicry and similar tumorigenic properties still remains a quest. Thus, in the present study, chemically modified Dextran-Chitosan (MDC) hydrogel has been developed as a 3D tumoroid aiding scaffold. The 3D A549 tumoroids aided by the MDC scaffold have physiologically relevant proliferation, migration, invasive potential, and Gefitinib [targeting epidermal growth factor receptor (EGFR)] efficacy as compared to the 2D cultured cells. The surface topography and wettability of hydrogel availed in vivo micro tumor mass mimicking Lung adenocarcinoma 3D in vitro model. Thus, opening an innovative avenue for elucidating the disease mechanism and drug efficacy on relevant 3D cancer models in vitro.
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Affiliation(s)
- Unnati Modi
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Dhaval Kedaria
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Rajesh Vasita
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
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Rather HA, Varghese JF, Dhimmar B, Yadav UC, Vasita R. Polycaprolactone-collagen nanofibers loaded with dexamethasone and simvastatin as an osteoinductive and immunocompatible scaffold for bone regeneration applications. BIOMATERIALS AND BIOSYSTEMS 2022; 8:100064. [PMID: 36824372 PMCID: PMC9934467 DOI: 10.1016/j.bbiosy.2022.100064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 11/29/2022] Open
Abstract
Physiological inflammation has been shown to promote bone regeneration; however, prolonged inflammation impedes the osteogenesis and bone repair process. To overcome the latter we aimed to develop a dual drug delivering nanofibrous scaffold to promote osteogenic differentiation of mesenchymal stromal cells (MSCs) and modulate the pro-inflammatory response of macrophages. The polycaprolactone (PCL)-collagen nanofibrous delivery system incorporating dexamethasone and simvastatin was fabricated by electrospinning process. The morphological analysis and mRNA, as well as protein expression of proinflammatory and anti-inflammatory cytokines in human monocytes (U937 cells), demonstrated the immunocompatibility effect of dual drug-releasing nanofibrous scaffolds. Nitric oxide estimation also demonstrated the anti-inflammatory effect of dual drug releasing scaffolds. The scaffolds demonstrated the osteogenic differentiation of adipose-derived MSCs by enhancing the alkaline phosphatase (ALP) activity and mineral deposition after 17 days of cell culture. The increased expression of Runt-related transcription factor-2 (RUNX-2) and osteocalcin at mRNA and protein levels supported the osteogenic potential of dual drug-loaded fibrous scaffolds. Hence, the results indicate that our fabricated nanofibrous scaffolds exhibit immunomodulatory properties and could be employed for bone regeneration applications after further in-vivo validation.
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Affiliation(s)
- Hilal Ahmad Rather
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | | | - Bindiya Dhimmar
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Umesh C.S. Yadav
- Metabolic Disorders and Inflammatory pathologies Laboratory, Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Rajesh Vasita
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India,Corresponding author.
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Yeh YY, Tsai YT, Wu CY, Tu LH, Bai MY, Yeh YC. The role of aldehyde-functionalized crosslinkers on the property of chitosan hydrogels. Macromol Biosci 2022; 22:e2100477. [PMID: 35103401 DOI: 10.1002/mabi.202100477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/22/2022] [Indexed: 11/10/2022]
Abstract
XXXX This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ying-Yu Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Ting Tsai
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Chun-Yu Wu
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, 10617, Taiwan
| | - Ling-Hsien Tu
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Meng-Yi Bai
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, 10617, Taiwan.,Biomedical Engineering Program, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 10617, Taiwan.,Adjunct Appointment to the Department of Biomedical Engineering, National Defense Medical Center, Taipei, 11490, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
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Modi U, Makwana P, Vasita R. Molecular insights of metastasis and cancer progression derived using 3D cancer spheroid co-culture in vitro platform. Crit Rev Oncol Hematol 2021; 168:103511. [PMID: 34740822 DOI: 10.1016/j.critrevonc.2021.103511] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 02/06/2023] Open
Abstract
The multistep metastasis process is carried out by the combinatorial effect of the stromal cells and the cancerous cells and plays vital role in the cancer progression. The scaffold/physical cues aided 3D cancer spheroid imitates the spatiotemporal organization and physiological properties of the tumor. Understanding the role of the key players in different stages of metastasis, the molecular cross-talk between the stromal cells and the cancer cells contributing in the advancement of the metastasis through 3D cancer spheroid co-culture in vitro platform is the center of discussion in the present review. This state-of-art in vitro platform utilized to study the cancer cell host defence and the role of exosomes in the cross talk leading to cancer progression has been critically examined here. 3D cancer spheroid co-culture technique is the promising next-generation in vitro approach for exploring potent treatments and personalized medicines to combat cancer metastasis leading to cancer progression.
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Affiliation(s)
- Unnati Modi
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India
| | - Pooja Makwana
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India
| | - Rajesh Vasita
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India.
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Lee C, Lim K, Kim SS, Thien LX, Lee ES, Oh KT, Choi HG, Youn YS. Near infrared light-responsive heat-emitting hemoglobin hydrogels for photothermal cancer therapy. Colloids Surf B Biointerfaces 2019; 176:156-166. [DOI: 10.1016/j.colsurfb.2018.12.070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/02/2018] [Accepted: 12/29/2018] [Indexed: 12/29/2022]
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Wang T, Hu Q, Lee JY, Luo Y. Solid Lipid-Polymer Hybrid Nanoparticles by In Situ Conjugation for Oral Delivery of Astaxanthin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9473-9480. [PMID: 30130387 DOI: 10.1021/acs.jafc.8b02827] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Solid lipid-polymer hybrid nanoparticles (SLPN) are nanocarriers made from a combination of polymers and lipids, integrating the advantages of biocompatible lipid-based nanoparticles and gastrointestinal (GI)-stable polymeric nanoparticles. In this study, a novel preparation strategy was proposed to fabricate GI-stable SLPN through in situ conjugation between oxidized dextran and bovine serum albumin. Effects of molecular weight of dextran (20, 40, 75, and 150 kDa), conjugation temperature (65 °C, 75 °C, and 85 °C), and time (30, 60, 120 min) on the particulate characteristics and stability were comprehensively investigated and optimized. As heating temperature increased from 65 °C to 75 °C, the particle size of SLPN increased from 139 to 180 nm with narrow size distribution, but when the temperature reached 85 °C severe aggregation was observed after 60 min. SLPN prepared with 40 kDa oxidized dextran under 85 °C/30 min heating condition exhibited excellent GI stability with no significant changes in particle size and PDI after incubation in simulated GI fluids. The prepared SLPN were then used to encapsulate astaxanthin, a lipophilic bioactive compound, studied as a model nutrient. After encapsulation in SLPN, antioxidant activity of astaxanthin was dramatically enhanced in aqueous condition and a sustained release was achieved in simulated GI fluids. Therefore, the SLPN developed in this study are a promising oral delivery system for lipophilic compounds, such as astaxanthin.
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Affiliation(s)
- Taoran Wang
- Department of Nutritional Sciences , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Qiaobin Hu
- Department of Nutritional Sciences , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Ji-Young Lee
- Department of Nutritional Sciences , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Yangchao Luo
- Department of Nutritional Sciences , University of Connecticut , Storrs , Connecticut 06269 , United States
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