Day: December 3, 2021

I found the field of Science & Technology – Other Topics; Materials Science very interesting. Saw the article Reduction/Oxidation-Responsive Hierarchical Nanoparticles with Self-Driven Degradability for Enhanced Tumor Penetration and Precise Chemotherapy published in 2020.0. SDS of cas: 56-17-7, Reprint Addresses Li, J (corresponding author), China Pharmaceut Univ, Dept Pharmaceut, State Key Lab Nat Med, Nanjing 210009, Peoples R China.. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

Deep tumor penetration, long blood circulation, rapid drug release, and sufficient stability are the most concerning dilemmas of nano-drug-delivery systems for efficient chemotherapy. Herein, we develop reduction/oxidation-responsive hierarchical nanoparticles co-encapsulating paclitaxel (PTX) and pH-stimulated hyaluronidase (pSH) to surmount the sequential biological barriers for precise cancer therapy. Poly(ethylene glycol) diamine (PEG-dia) is applied to collaboratively cross-link the shell of nanoparticles self-assembled by a hyaluronic acid-stearic acid conjugate linked via a disulfide bond (HA-SS-SA, HSS) to fabricate the hierarchical nanoparticles (PHSS). The PTX and pSH coloaded hierarchical nanoparticles (PTX/pSH-PHSS) enhance the stability in normal physiological conditions and accelerate drug release at tumorous pH, and highly reductive or oxidative environments. Functionalized with PEG and HA, the hierarchical nanoparticles preferentially prolong the circulation time, accumulate at the tumor site, and enter MDA-MB-231 cells via CD44-mediated endocytosis. Within the acidic tumor micro-environment, pSH would be partially reactivated to decompose the dense tumor extracellular matrix for deep tumor penetration. Interestingly, PTX/pSH-PHSS could be degraded apace by the completely activated pSH within endo/lysosomes and the intracellular redox micro-environment to facilitate drug release to produce the highest tumor inhibition (93.71%) in breast cancer models.

Welcome to talk about 56-17-7, If you have any questions, you can contact Yin, SP; Gao, Y; Zhang, Y; Xu, JN; Zhu, JP; Zhou, F; Gu, XC; Wang, GJ; Li, J or send Email.. SDS of cas: 56-17-7

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

HPLC of Formula: C4H14Cl2N2S2. Yu, K; Yang, XY; He, LH; Zheng, R; Min, J; Su, HY; Shan, SY; Jia, QM in [Yu, Kun; He, Lihua; Zheng, Rong; Min, Jie; Su, Hongying; Shan, Shaoyun; Jia, Qingming] Kunming Univ Sci & Technol, Fac Chem Engn, 727 South Jingming Rd, Kunming 650500, Yunnan, Peoples R China; [Yang, Xiyao] Kunming Univ Sci & Technol, Fac Life Sci & Technol, 727 South Jingming Rd, Kunming 650500, Yunnan, Peoples R China published Facile preparation of pH/reduction dual-stimuli responsive dextran nanogel as environment-sensitive carrier of doxorubicin in 2020.0, Cited 39.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7.

Dual and multi-stimuli responsive polymeric nanoparticles that can respond to two or more signals have been demonstrated as prospective drug carriers with enhanced tumor accumulation and on-demand drug release profiles. In this study, dextran-based (Dex-SS) nanogels were developed via a facile method based on the disulfide containing Schiff base formation between polyaldehyde dextran and cystamine in water-in-oil inverse microemulsion. Acidic and reductive (GSH) environment sensitive degradation behaviors of the resulted nanogels were investigated by morphology analysis of the treated nanogels using SEM imaging. Doxorubicin (DOX) was covalently conjugated into the dextran nanogels via Schiff base linkages, and pH/GSH dual sensitive drug release profiles were demonstrated. Effective cell uptake of the DOX-loaded nanogels was finally identified by human cancer cell line of H1299. Take advantage of the acidic and reductive tumor microenvironment, the dual-stimuli responsive Dex-SS nanogels can serve as micmenvironment-sensitive drug delivery systems for tumor therapy.

HPLC of Formula: C4H14Cl2N2S2. Bye, fridends, I hope you can learn more about C4H14Cl2N2S2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

Recently I am researching about PH-SENSITIVE MICELLES; POLYMERIC MICELLES; ANTICANCER DRUG; DELIVERY-SYSTEMS; NANOCARRIERS; SHELL, Saw an article supported by the National NaturalScienceFoundation of ChinaNational Natural Science Foundation of China (NSFC) [51873042, 21808039]; Natural Science Foundation of Guangdong ProvinceNational Natural Science Foundation of Guangdong Province [2018A030310525]; Science and Technology Planning Project of Guangdong Province [2017B090915004]; Guangdong Provincial Key Laboratory of Advanced Coatings Research and Development [2017B030314105]. Product Details of 56-17-7. Published in POLYMER SOC KOREA in SEOUL ,Authors: Huang, YW; Li, YZ; Tang, ZL; Su, QP; Liao, TT; Gu, YX; Lin, XF; Zu, XH; Lin, WJ; Yi, GB. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

The four-arm star copolymers poly(methacrylic acid)-poly(2-hydroxyethyl methacrylate-disulfide similar to)-poly(poly(ethylene glycol) methyl ether methacrylate) (4AS-PMAA(x)-(PHEMA-SS similar to)(y)-PPEGMA(z)) with four different block ratios were synthesized and could self-assembled into cross-linked polymer micelles for the exploration of the structure-property relationship. The cross-linked polymer micelles in aqueous solution had low critical micelle concentration (CMC) values (1.9-4.6 mg/L), which exhibited better stability than non-cross-linked micelles. The CMC value decreased with the increase of the length of inner PMAA core and hydrophobic PHEMA cross-linked middle layer. The blank and doxorubicin (DOX)-loaded micelles with different block ratios were prepared by dialysis with the particle sizes of 120-240 nm. The longer inner PMAA core and cross-linked middle layer enhanced the drug loading content (DLC) results and led to relatively bigger particle sizes of polymer micelles. The in vitro DOX release data revealed that DOX-loaded micelles had low DOX cumulative release percentages of 18-37% after 110 h at pH 7.4, but up to 83-90% when introducing reductant GSH at pH 5.0. The 4AS-PMAA(21.2)-(PHEMASS approximate to)(13.1)-PPEGMA(5.1) micelles with the longest PMAA core had the largest cumulative release of 90.1%. The DOX release process and mechanism of the micelles at different conditions fitted well with the semi-empirical equation. Overall, the results demonstrated that the block ratios and pH/redox-responsiveness of these four-arm star copolymers could be well-controlled and their self-assembled cross-linked micelles as anticancer drug carrier system could be improved by optimizing the different ratios.

Bye, fridends, I hope you can learn more about C4H14Cl2N2S2, If you have any questions, you can browse other blog as well. See you lster.. Product Details of 56-17-7

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

An article Preparation of functionalized star polymer nanoparticles by RAFT polymerization and their application in positionally assembled enzymes for cascade reactions WOS:000470919700015 published article about METAL-ORGANIC FRAMEWORKS; HOST-GUEST INTERACTIONS; RADICAL POLYMERIZATION; HOLLOW NANOFIBERS; CROSS-LINKING; IMMOBILIZATION; COLOCALIZATION; COPOLYMERS; SCAFFOLDS; EFFICIENT in [Chen, Zhiwu; Cao, Hui; Tan, Tianwei] Beijing Univ Chem Technol, Coll Life Sci & Technol, Beijing Key Lab Bioproc, Beijing 100029, Peoples R China in 2019.0, Cited 51.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7. Computed Properties of C4H14Cl2N2S2

A well-defined functional star polymer nanoparticle was prepared using an “ arm first” approach via RAFT polymerization. In this work, N-adamantylacrylamide and N-succinimidyl acrylate were copolymerized with N-isopropylacrylamide sucessfully. The obtained diblock copolymer regarded as an “ arm” endowed the star polymer with multiple conjugate functions. By adjusting the amount of crosslinking agent, the size and polydispersity of the star polymer were controlled. With the star polymer as the scaffold, a sequential multi-enzyme system was constructed, where HRP was placed in the inner layer through covalent conjugation, and b-cyclodextrin-modified GOx was assembled in the outer layer through hostguest recognition. More interestingly, the activity of the enzyme modified by b-cyclodextrin was improved. In addition to the enhanced thermal stability, this multienzyme system also exhibited a reduced Km value (from 2.18 mM to 0.39 mM) and an excellent substrate affinity. The specificity constant (Kcat/Km) for GOx in the star polymer@ HRP@ GOx system was 1.7-fold higher than that of the free HRP with free GOx system. This strategy will promote the development of biocatalysis reactions and biosensors as a promising method.

Computed Properties of C4H14Cl2N2S2. Welcome to talk about 56-17-7, If you have any questions, you can contact Chen, ZW; Cao, H; Tan, TW or send Email.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

In 2020.0 THERANOSTICS published article about CYANINE DYES; IN-VIVO; PHOTODYNAMIC THERAPY; CANCER; NANOPARTICLES; RELEASE; NANOMEDICINE; CHEMOTHERAPY; DOXORUBICIN; METASTASES in [Mo, Shanyan; Zhang, Xiaoting; Hameed, Sadaf; Zhou, Yiming; Dai, Zhifei] Peking Univ, Dept Biomed Engn, Coll Engn, Beijing 100871, Peoples R China; [Mo, Shanyan] Beijing Univ Technol, Coll Life Sci & Bioengn, Beijing 100124, Peoples R China in 2020.0, Cited 58.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7. Formula: C4H14Cl2N2S2

Near-infrared (NIR) fluorescence imaging has been proved as an effective modality in identifying the tumor border and distinguishing the tumor cells from healthy tissue during the oncological surgery. Developing NIR fluorescent probes with high tumor to background (T/B) signal is essential for the complete debulking of the tumor, which will prolong the survival rate of tumor patients. However, the nonspecific binding and always-on properties of the conventional fluorescent probes leads to high background signals and poor specificity. Method: To address this problem, glutathione (GSH)-responsive, two disulfide-bonded dicyanine dyes (ss-diCy5 and ss-diNH800CW) were synthesized. As synthesized dyes are quenched under normal physiological conditions, however, once reached to the tumor site, these dyes are capable of emitting strong fluorescence signals primarily because of the cleavage of the disulfide bond in the tumor microenvironment with high GSH concentration. Besides, the GSH-responsive behavior of these dyes was monitored using the UV-vis and fluorescence spectroscopy. The diagnostic accuracy of the aforementioned dyes was also tested both in tumor cells and 4T1-bearing mice. Results: The fluorescence signal intensity of disulfide dicyanine dyes was quenched up to 89% compared to the mono cyanine dyes, thus providing a very low fluorescence background. However, when the disulfide dicyanine dye reaches the tumor site, the dicyanine is cleaved by GSH into two mono-dyes with high fluorescence strength, thus producing strong fluorescent signals upon excitation. The fluorescent signal of the dicyanine was enhanced by up to 27-fold after interacting with the GSH solution. In vivo xenografts tumor studies further revealed that the fluorescence signals of aforementioned dyes can be quickly recovered in the solid tumor. Conclusion: In summary, the disulfide dicyanines dyes can provide a promising platform for specific tumor-activatable fluorescence imaging with improved T/B value.

Formula: C4H14Cl2N2S2. Welcome to talk about 56-17-7, If you have any questions, you can contact Mo, SY; Zhang, XT; Hameed, S; Zhou, YM; Dai, ZF or send Email.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

I found the field of Science & Technology – Other Topics; Materials Science very interesting. Saw the article Engineering of Bone- and CD44-Dual-Targeting Redox-Sensitive Liposomes for the Treatment of Orthotopic Osteosarcoma published in 2019.0. Product Details of 56-17-7, Reprint Addresses Wu, ZM (corresponding author), Yantai Univ, Collaborat Innovat Ctr Adv Drug Delivery Syst & B, Key Lab Mol Pharmacol & Drug Evaluat, Sch Pharm,Minist Educ, Yantai 264005, Peoples R China.; Wu, ZM (corresponding author), Univ Auckland, Sch Pharm, Auckland 1142, New Zealand.. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

This study aimed to develop an efficient step-by-step osteosarcoma (OS)-targeting liposome system functionalized with a redox-cleavable, bone- and cluster of differentiation 44 (CD44)-dual-targeting polymer. Furthermore, the effect of coadministration of a tumor-penetrating peptide, internalizing RGD (iRGD), was investigated. First, a bone-targeting moiety, alendronate (ALN), was conjugated with hyaluronic acid (HA), a ligand for CD44. This ALN-HA conjugate was coupled with DSPE PEG(2000)-COOH through a bioreducible disulfide linker (-SS-) to obtain a functionalized lipid, ALN-HA-SS-L, to be postinserted into preformed liposomes loaded with doxorubicin (DOX). The roles of ALN, HA, and the redox sensitivity of the ALN-HA-SS-L liposomes (ALN-HA-SS-L-L) in the anti-OS effect were critically evaluated against various reference liposomal formulations (with only ALN, HA, or redox sensitivity). ALN-HA-SS-L-L displayed a zeta potential of -26.07 +/- 0.32 mV and selectively disassembled in the presence of a reducing agent, 10 mM glutathione, which can be found in cancer cells. cells. Compared to various reference liposomes, ALN-HA-SS-L-L/DOX had significantly higher cytotoxicity to human OS MG-63 cells alongside high and rapid cellular uptake. In the orthotopic OS nude mouse models, ALN-HA-SS-L-L/DOX showed remarkable tumor growth suppression and prolonged survival time. This result was further improved by the coadministration of iRGD. The antitumor effects of various liposomes were ranked in the same order as the degree of tumor biodistribution shown by in vivo/ex vivo imaging: ALN-HA-SS-L-L coadministered with iRGD > ALN-HA-SS-L-L > HA-SS-L-L > HA-L-L > PEG-L> free drug. ALN-HA-SS-L-L/DOX also reduced the cardiotoxicity of DOX and lung metastases. Overall, this study demonstrated that ALN-HA-SS-L-L/DOX, equipped with bone- and CD44-dual-targeting abilities and redox sensitivity, could be a promising OS-targeted therapy. The efficacy could also be augmented by coadministration of iRGD.

Product Details of 56-17-7. Bye, fridends, I hope you can learn more about C4H14Cl2N2S2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

An article One step synthesis of monodisperse thiol-ene clickable polymer microspheres and application on biological functionalization WOS:000456751000004 published article about BLOCK-COPOLYMER NANOASSEMBLIES; RAFT DISPERSION POLYMERIZATION; NANOPARTICLES; MORPHOLOGY; PROTEINS; DELIVERY; UNIFORM; STYRENE; ACID; DRUG in [Huang, Yongping; Yuan, Jiayu; Tang, Jianhua; Yang, Jianwen; Zeng, Zhaohua] Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China; [Yang, Jianwen; Zeng, Zhaohua] Sun Yat Sen Univ, Minist Educ, Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Guangdong, Peoples R China in 2019.0, Cited 53.0. COA of Formula: C4H14Cl2N2S2. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7

Introducing clickable groups onto polymer microspheres allows the microspheres to be facilely functionalized via a click reaction. In this report, we have synthesized monodisperse PMMA microspheres with clickable double bonds on the surface by one-step RAFT-assisted dispersion photopolymerization using a cyclohexyl-containing macro-RAFT agent as a stabilizer. This macro-RAFT agent, named P(THPAA-b-AA)-TTC, was synthesized by RAFT-mediated block copolymerization of a cyclohexyl-containing monomer (THPAA, obtained by esterification of cis-1,2,3,6-tetrahydrophthalic with 2-hydroxyethyl acrylate) and acrylic acid. The obtained microspheres were analyzed by H-1 NMR and Iodometric method, indicating that the content of carbon double bonds on the microspheres increased with increasing the amount of P(THPAA-b-AA)-TTC in the polymerization feed. We then used a thiolated biotin to perform the photo-click reaction with the cyclohexene double bond on the micro spheres, thereby attaching the biotin unit onto the microspheres. The biotinylated PMMA microspheres were found to be able to effectively immobilize fluorescein isothiocyanate streptavidin (FITC-SAv) via the specific adsorption of biotin to streptavidin, and thus exhibited clear fluorescence under confocal microscope. This study provides a convenient and feasible way to prepare surface-functionalized microspheres, which has great potential in biological applications as well as other fields.

COA of Formula: C4H14Cl2N2S2. Welcome to talk about 56-17-7, If you have any questions, you can contact Huang, YP; Yuan, JY; Tang, JH; Yang, JW; Zeng, ZH or send Email.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

Recently I am researching about LOADING CAPACITY; DRUG; DOXORUBICIN; APATINIB; NANOMEDICINE; THERAPEUTICS; CONJUGATE, Saw an article supported by the National Youth Science Foundation Project of China [NSFC81503583]. Computed Properties of C4H14Cl2N2S2. Published in TAYLOR & FRANCIS LTD in ABINGDON ,Authors: Zhang, XQ; Ren, XM; Tang, JY; Wang, JT; Zhang, X; He, P; Yao, C; Bian, WH; Sun, LZ. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

Multidrug resistance (MDR) of cancer cells is a significant challenge in chemotherapy, highlighting the urgent medical need for simple and reproducible strategies to reverse this process. Here, we report the development of an active tumor-targeting and redox-responsive nanoplatform (PA-ss-NP) using hyaluronic acid-g-cystamine dihydrochloride-poly-epsilon-(benzyloxycarbonyl)-L-lysine (HA-ss-PLLZ) to co-deliver paclitaxel (PTX) and apatinib (APA) for effective reversal of MDR. This smart nanoplatform specifically bound to CD44 receptors, leading to selective accumulation at the tumor site and uptake by MCF-7/ADR cells. Under high concentrations of cellular glutathione (GSH), the nanocarrier was degraded rapidly with complete release of its encapsulated drugs. Released APA effectively inhibited the function of the P-glycoprotein (P-gp) drug pump and improved the sensitivity of MDR cells to chemotherapeutic agents, leading to the recovery of PTX chemosensitivity in MDR cells. As expected, this newly developed intelligent drug delivery system could effectively control MDR, both in vitro and in vivo.

Computed Properties of C4H14Cl2N2S2. Welcome to talk about 56-17-7, If you have any questions, you can contact Zhang, XQ; Ren, XM; Tang, JY; Wang, JT; Zhang, X; He, P; Yao, C; Bian, WH; Sun, LZ or send Email.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

An article Boronate affinity sorbents based on thiol-functionalized polysiloxane-polymethacrylate composite materials in syringe format for selective extraction of glycopeptides WOS:000635090400004 published article about HYBRID MONOLITHIC COLUMN; ENRICHMENT in [Mompo-Rosello, Oscar; Vergara-Barberan, Maria; Lerma-Garcia, Maria Jesus; Simo-Alfonso, Ernesto F.; Herrero-Martinez, Jose Manuel] Univ Valencia, Dept Analyt Chem, C Dr Moliner 50, Valencia 46100, Spain in 2021.0, Cited 46.0. Application In Synthesis of 2,2′-Disulfanediyldiethanamine dihydrochloride. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7

In this work, two novel boronate affinity monolithic materials able to extract glycopeptides within a polypropylene syringe are described and compared. The first material was synthesized from glycidyl methacrylate (GMA)-based monoliths modified with poly-3-mercaptopropyl-methylsiloxane (PMPMS) followed by attachment of 4-vinylphenylboronic acid (VPBA) via thiol-ene click reaction. The second material was prepared by using gold nanoparticle (AuNP)-modified monoliths as substrate followed by subsequent attachment of PMPMS and VPBA. The resulting materials were used as sorbents for solid-phase extraction (SPE) to selectively preconcentrate glycopeptides from horseradish peroxidase (HRP) digests. The material that gave the superior performance was that prepared with AuNPs due to the presence of abundant boronic acid groups, being its practical applicability also examined. The hybrid material exhibited a satisfactory efficiency of glycopeptide enrichment (identifying 24 glycopeptides from a total of 27) in mixture of tryptic digests of HRP and bovine serum albumin (BSA) (1:100, w/w). The sorbent shows low sensitivity (0.5 fmol/?L), good adsorption capacity (25 mg g-1) and suitable reusability (over 10 times). Moreover, the hybrid monolith was successfully applied to the selective enrichment of glycopeptides from human serum digests, without any pretreatment, in which 85 glycopeptides were identified by nano-LC-MS/MS, suggesting a great potential for application in glycoproteome field.

Application In Synthesis of 2,2′-Disulfanediyldiethanamine dihydrochloride. Welcome to talk about 56-17-7, If you have any questions, you can contact Mompo-Rosello, O; Vergara-Barberan, M; Lerma-Garcia, MJ; Simo-Alfonso, EF; Herrero-Martinez, JM or send Email.

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem

Authors Ma, D; Shi, MH; Li, X; Zhang, JL; Fan, Y; Sun, K; Jiang, TT; Peng, C; Shi, XY in AMER CHEMICAL SOC published article about ALGINATE NANOGELS; DRUG-DELIVERY; TUMOR; SIZE; GLUTATHIONE; T-1; ACCUMULATION; PENETRATION; ASSEMBLIES; MICELLES in [Ma, Dan; Zhang, Jiulong; Peng, Chen; Shi, Xiangyang] Tongji Univ, Sch Med, Shanghai Peoples Hosp 10, Canc Ctr, Shanghai 200072, Peoples R China; [Ma, Dan; Shi, Menghan; Li, Xin; Fan, Yu; Jiang, Tingting; Shi, Xiangyang] Donghua Univ, Coll Chem Chem Engn & Biotechnol, Shanghai 201620, Peoples R China; [Sun, Kai] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA; [Peng, Chen] Ninghai First Hosp, Ningbo 315600, Peoples R China in 2020.0, Cited 44.0. Category: thiazines. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7

Development of novel activable dual-mode T-1/T-2-weighted magnetic resonance (MR) contrast agents with the same composition for dynamic precision imaging of tumors has been a challenging task. Here, we demonstrated a strategy to prepare clustered Fe3O4 nanoparticles (NPs) with redox-responsiveness to tumor microenvironment to achieve switchable T-2/T-1-weighted dual-mode MR imaging applications. In this study, we first synthesized ultrasmall Fe3O4 NPs with an average size of 3.3 nm and an r, relaxivity of 4.3 mM(-1) s(-1), and then cross-linked the single Fe3O4 NPs using cystamine dihydrochloride (Cys) to form clustered Fe3O4/Cys NPs. The Fe3O4 nanoclusters (NCs) possess desirable colloidal stability, cytocompatibility, high r(2) relaxivity (26.4 mM(-1) s(-1)), and improved cellular uptake efficiency. Importantly, with the redox-responsiveness of the disulfide bond of Cys, the Fe3O4 NCs can be dissociated to form single particles under a reducing condition, hence displaying a switchable T-2/T-1-weighted MR imaging property that can be utilized for dynamic precision imaging of cancer cells in vitro and a subcutaneous tumor model in vivo due to the reductive intracellular environment of cancer cells and the tumor microenvironment. With the tumor reductive microenvironment-mediated switching of T-2 to T-1 MR effect and the ultrasmall size of the single particles that can pass through the kidney filter, the developed Fe3O4 NCs may be used as a promising switchable T-2/T-1 dual-mode MR contrast agent for precision imaging of different biosystems.

Welcome to talk about 56-17-7, If you have any questions, you can contact Ma, D; Shi, MH; Li, X; Zhang, JL; Fan, Y; Sun, K; Jiang, TT; Peng, C; Shi, XY or send Email.. Category: thiazines

Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem