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Chen Z, Zhang X, Fu Y, Jin Y, Weng Y, Bian X, Chen X. Degradation Behaviors of Polylactic Acid, Polyglycolic Acid, and Their Copolymer Films in Simulated Marine Environments. Polymers (Basel) 2024; 16:1765. [PMID: 39000621 PMCID: PMC11244091 DOI: 10.3390/polym16131765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 07/17/2024] Open
Abstract
Poly(lactic acid) (PLA) and poly(glycolic acid) (PGA) are extensively studied biodegradable polymers. However, the degradation behavior of their copolymer, poly(lactic-co-glycolic acid) (PLGA), in marine environments has not yet been confirmed. In this study, the changes in macroscopic and microscopic morphology, thermal properties, aggregation, and chemical structure of PLA, PGA, PLGA-85, and PLGA-75 (with 85% and 75% LA content) in simulated marine environments were investigated. Results revealed that degradation occurred through hydrolysis of ester bonds, and the degradation rate of PGA was faster than that of PLA. The amorphous region degraded preferentially over the crystalline region, leading to cleavage-induced crystallization and decreased thermal stability of PLA, PLGA-85, and PLGA-75. The crystal structures of PLGAs were similar to those of PLA, and the higher GA content, the faster was the degradation rate. This study provides a deeper understanding of the seawater degradation behaviors of PLA, PGA, and their copolymers, and provides guidance for the preparation of materials with controllable degradation performance.
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Affiliation(s)
- Zeyu Chen
- College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Xi Zhang
- College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Ye Fu
- College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Yujuan Jin
- College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Yunxuan Weng
- College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Xinchao Bian
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuesi Chen
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Wang P, Liu B, Wang Q, Wang Y, Gao X, Gou J, He H, Zhang Y, Yin T, Jin X, Tang X. Enhanced localized therapeutic precision: A face-to-face folate-targeted Cu 2+-mediated nanotherapy with thermosensitive sustained-release system. Int J Pharm 2024; 658:124213. [PMID: 38729382 DOI: 10.1016/j.ijpharm.2024.124213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/29/2024] [Accepted: 05/06/2024] [Indexed: 05/12/2024]
Abstract
Safe and effective Cu2+ supplementation in local lesion is crucial for minimizing toxicity of DSF-based chemotherapy. Targeted delivery of Cu2+ appears more promising. Intraperitoneal chemotherapy for peritoneal carcinoma (PC) establishes "face-to-face" contact between targeted nanocarriers and tumor tissue. Herein, this study developed a biodegradable, injectable thermosensitive hydrogel that coencapsulating DSF submicroemulsion (DSF-SE) and folate-modified liposome loading glycyrrhizic acid-Cu (FCDL). FCDL acted as 'beneficial horse' to target the tumor-localized folate receptor, thus liberating Cu2+ in tumor nidus. The prepared FCDL and DSF-SE were found with uniform sizes (160.2 nm, 175.4 nm), low surface charge (-25.77 mV, -16.40 mV) and high encapsulation efficiency (97.93 %, 90.08 %). In vitro drug release profile of FCDL, DSF-SE and FCDL&DSF-SE@G followed a sustained release pattern. And the release behavior of Cu2+ from FCDL was pH-related, i.e., Cu2+ was released faster under acidic condition. When FCDL and DSF-SE were loaded into an PLGA-PEG-PLGA-based hydrogel system, FCDL&DSF-SE@G was formed to ensure separated delivery of Cu2+ and DSF in space but synchronized release over time. The rheology experiment showed a satisfactory gelling temperature of 32.7 °C. In vitro cytotoxicity study demonstrated that FCDL&DSF-SE@G significantly lowered the IC50 of free Cu2+/DSF, Cu2+/DSF hydrogel and non-targeted analogue by almost 70 %, 65 % and 32 %, respectively. Accordingly, in tumor-bearing mice, FCDL&DSF-SE@G augmented the tumor inhibition rates for the same formulations by 352 %, 145 % and 44 %, respectively. The main mechanism was attributed to higher uptake of FCDL and DSF-SE, resulting in increased Cu(DDTC)2 formation, ROS production and cell apoptosis. In conclusion, this targeted nanotherapy approach with dual-nanocarriers loaded hydrogel system, with its focus on face-to-face contact between nanocarriers and tumor tissues in the peritoneal cavity, holds significant promise for intraperitoneal chemotherapy in PC.
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Affiliation(s)
- Ping Wang
- School of Pharmaceutical Sciences, Jilin University, No. 1266, Fujin Road, Changchun 130021, China
| | - Boyuan Liu
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Qingqing Wang
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Yue Wang
- Department of Pharmacy, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital), Beijing 100730, China
| | - Xiuqian Gao
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Jingxin Gou
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Haibing He
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Yu Zhang
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Tian Yin
- School of Functional Food and Wine, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Xiangqun Jin
- School of Pharmaceutical Sciences, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Xing Tang
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
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Farooq U, Mirza MA, Alshetaili A, Mohapatra S, Jain P, Hassan N, Iqbal Z, Ali A. In silico and in vitro assessment of an optimized QbD-guided myoinositol and metformin-loaded mucus-penetrating particle-based gel for the amelioration of PCOS. NANOSCALE ADVANCES 2024; 6:648-668. [PMID: 38235090 PMCID: PMC10791119 DOI: 10.1039/d3na00943b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 11/29/2023] [Indexed: 01/19/2024]
Abstract
Polycystic ovarian syndrome (PCOS) is a multi-factorial endocrine disorder affecting women of reproductive age. However, its high prevalence and the unsuccessful translation of conventional modalities have made PCOS a pharmaco-therapeutic challenge. In the present study, we explored bi-formulations (comprising metformin-loaded mucus-penetrating nanoparticles, MTF-MPPs, and myoinositol-loaded mucus-penetrating particles, MI-MPPs) incorporated in a carbomer gel tailored for intravaginal administration. For the development and optimization of the MPPs-gel, a QbD (quality by design) approach was employed, including the initial and final risk assessment, central composite design of experts, and method validation. The optimized MTF-MPPs and MI-MPPs possessed an optimum nanometric particle size (195.0 nm and 178.8 nm, respectively) and a PDI of 0.150 and 0.123, respectively, together with a negligible negative zeta potential (-5.19 mV and -6.19 mV, respectively) through the vaginal mucus. It was observed that the MPPs are small and monodisperse with a neutral surface charge. It was observed that the MPPs-gel formulations released approximately 69.86 ± 4.65% of MTF and 67.14 ± 5.74% of MI within 120 h (5 days), which was observed to be sustained unlike MFT-MI-gel with approximately 94.89 ± 4.17% of MTF and 90.91 ± 15% of MI drugs released within 12 h. The confocal microscopy study of rhodamine-loaded MPPs indicated that they possessed a high fluorescence intensity at a depth of 15 μm, while as the penetration trajectory in the vaginal tissue increased to 35 μm, their intensity was reduced, appearing to be more prominent in the blood vessels. The analyzed data of MPPs-gel suggest that the optimized MPPs-gel formulation has potential to reach the targeted area via the uterovaginal mucosa, which has a wide network of blood vessels. Subsequently, in vivo studies were conducted and the results revealed that the proposed MPPs-gel formulation could regulate the estrous cycle of the reproductive system compared to the conventional formulation. Moreover, the formulation significantly reduced the weight of the ovaries compared to the control and conventional vaginal gel. Biochemical estimation showed improved insulin and sex hormone levels. Thus, the obtained data revealed that the deep penetration and deposition of MTF and MI on the targeted area through intravaginal delivery resulted in better therapeutic effects than the conventional vaginal gel. The obtained results confirmed the amelioration of PCOS upon treatment using the prepared MPPs-gel formulation. According to the relevant evaluation studies, it was concluded that MPPs-gel was retained in the vaginal cavity for systemic effects. Also, the sustained and non-irritating therapeutic effect meets the safety aspects. This work serves as a promising strategy for intravaginal drug delivery.
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Affiliation(s)
- Uzma Farooq
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Mohd Aamir Mirza
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Abdullah Alshetaili
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University Alkharj Saudi Arabia
| | - Sradhanjali Mohapatra
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Pooja Jain
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Nazia Hassan
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Zeenat Iqbal
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
| | - Asgar Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India +91-9899571726 +91-9811733016
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Fan R, Sun W, Zhang T, Wang R, Tian Y, Zhang H, Li J, Zheng A, Song S. Paclitaxel-nanocrystals-loaded network thermosensitive hydrogel for localised postsurgical recurrent of breast cancer after surgical resection. Biomed Pharmacother 2022; 150:113017. [PMID: 35483193 DOI: 10.1016/j.biopha.2022.113017] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 04/19/2022] [Indexed: 11/02/2022] Open
Abstract
The recurrence of cancer after local surgery has been a difficult problem in the clinic for a long time. In recent years, local treatment via drug-loaded thermosensitive hydrogels have become a promising strategy to prevent cancer recurrence. Thus, a thermosensitive hydrogel based on poloxamer 407, poloxamer 188 and the bioadhesive excipient carbomer 974P was designed to locally release paclitaxel and prevent local tumour recurrence after direct smearing of the hydrogel at the site of injury in the surgical cavity. To improve the local drug concentration, paclitaxel was prepared into nanocrystals via a wet mill process. A series of studies were performed on this paclitaxel nanocrystal thermosensitive hydrogel (PTX-NCS-gel), including examination of its rheological properties and in vitro release and dissolution studies. Moreover, a postoperative tumour recurrence mouse model was established to evaluate the antitumour effects of this thermosensitive hydrogel. The results showed that PTX-NCS-gel had a clear, regular network structure with excellent temperature sensitivity and could be gelated within minutes at 33.1 °C. Additionally, the rheological property investigation indicated that the hydrogel has proper viscoelasticity and self-recovery ability. In vivo imaging showed that PTX-NCS-gel inhibited both local tumour recurrence and distant metastasis. Moreover, PTX-NCS-gel has the following advantages: it is more convenient to administer, avoids strong allergic responses, and has fewer side effects on the liver and spleen. This hydrogel has the potential to serve as a powerful auxiliary medication to prevent postoperative local tumour recurrence.
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Affiliation(s)
- Ranran Fan
- School of Pharmacy, Bengbu Medical College, Anhui 233030, China; Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China
| | - Wenjun Sun
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China
| | - Ting Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Rongrong Wang
- North China University of Science and Technology, Hebei 063210, China
| | - Yang Tian
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China
| | - Hui Zhang
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China.
| | - Jianchun Li
- School of Pharmacy, Bengbu Medical College, Anhui 233030, China.
| | - Aiping Zheng
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China.
| | - Shenghan Song
- Department of Vascular Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
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Liu H, Prachyathipsakul T, Koyasseril-Yehiya TM, Le SP, Thayumanavan S. Molecular bases for temperature sensitivity in supramolecular assemblies and their applications as thermoresponsive soft materials. MATERIALS HORIZONS 2022; 9:164-193. [PMID: 34549764 PMCID: PMC8757657 DOI: 10.1039/d1mh01091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Thermoresponsive supramolecular assemblies have been extensively explored in diverse formats, from injectable hydrogels to nanoscale carriers, for a variety of applications including drug delivery, tissue engineering and thermo-controlled catalysis. Understanding the molecular bases behind thermal sensitivity of materials is fundamentally important for the rational design of assemblies with optimal combination of properties and predictable tunability for specific applications. In this review, we summarize the recent advances in this area with a specific focus on the parameters and factors that influence thermoresponsive properties of soft materials. We summarize and analyze the effects of structures and architectures of molecules, hydrophilic and lipophilic balance, concentration, components and external additives upon the thermoresponsiveness of the corresponding molecular assemblies.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | | | | | - Stephanie P Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Centre for Bioactive Delivery, Institute for Applied Life Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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