Day: January 30, 2022

I found the field of Pharmacology & Pharmacy very interesting. Saw the article Self-assembled nanoparticles of reduction-sensitive poly (lactic-co-glycolic acid)-conjugated chondroitin sulfate A for doxorubicin delivery: preparation, characterization and evaluation published in 2019.0. Safety of 2,2′-Disulfanediyldiethanamine dihydrochloride, Reprint Addresses Ren, J; Yu, JM (corresponding author), Jiujiang Univ, Sch Pharm & Life Sci, 320 Xunyang East Rd, Jiujiang 332000, Peoples R China.. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

In this study, reduction-sensitive self-assembled polymer nanoparticles based on poly (lactic-co-glycolic acid) (PLGA) and chondroitin sulfate A (CSA) were developed and characterized. PLGA was conjugated with CSA via a disulfide linkage (PLGA-ss-CSA). The critical micelle concentration (CMC) of PLGA-ss-CSA conjugate is 3.5 mu g/mL. The anticancer drug doxorubicin (DOX) was chosen as a model drug, and was effectively encapsulated into the nanoparticles (PLGA-ss-CSA/DOX) with high loading efficiency of 15.1%. The cumulative release of DOX from reduction-sensitive nanoparticles was only 34.8% over 96h in phosphate buffered saline (PBS, pH 7.4). However, in the presence of 20mM glutathione-containing PBS environment, DOX release was notably accelerated and almost complete from the reduction-sensitive nanoparticles up to 96h. Moreover, efficient intracellular DOX release of PLGA-ss-CSA/DOX nanoparticles was confirmed by CLSM assay in A549 cells. In vitro cytotoxicity study showed that the half inhibitory concentrations of PLGA-ss-CSA/DOX nanoparticles and free DOX against A549 cells were 1.141 and 1.825 mu g/mL, respectively. Therefore, PLGA-ss-CSA/DOX nanoparticles enhanced the cytotoxicity of DOX in vitro. These results suggested that PLGA-ss-CSA nanoparticles could be a promising carrier for drug delivery.

Welcome to talk about 56-17-7, If you have any questions, you can contact Wang, XF; Ren, J; He, HQ; Liang, L; Xie, X; Li, ZX; Zhao, JG; Yu, JM or send Email.. Safety of 2,2′-Disulfanediyldiethanamine dihydrochloride

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

Name: 2,2′-Disulfanediyldiethanamine dihydrochloride. I found the field of Chemistry; Science & Technology – Other Topics; Materials Science; Physics very interesting. Saw the article Combining Dextran Conjugates with Stimuli-Responsive and Folate-Targeting Activity: A New Class of Multifunctional Nanoparticles for Cancer Therapy published in 2021.0, Reprint Addresses Nicoletta, FP (corresponding author), Univ Calabria, Dept Pharm Hlth & Nutr Sci, I-87036 Arcavacata Di Rende, Italy.. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride.

Nanoparticles with active-targeting and stimuli-responsive behavior are a promising class of engineered materials able to recognize the site of cancer disease, targeting the drug release and limiting side effects in the healthy organs. In this work, new dual pH/redox-responsive nanoparticles with affinity for folate receptors were prepared by the combination of two amphiphilic dextran (DEX) derivatives. DEXFA conjugate was obtained by covalent coupling of the polysaccharide with folic acid (FA), whereas DEXssPEGCOOH derived from a reductive amination step of DEX was followed by condensation with polyethylene glycol 600. After self-assembling, nanoparticles with a mean size of 50 nm, able to be destabilized in acidic pH and reducing media, were obtained. Doxorubicin was loaded during the self-assembling process, and the release experiments showed the ability of the proposed system to modulate the drug release in response to different pH and redox conditions. Finally, the viability and uptake experiments on healthy (MCF-10A) and metastatic cancer (MDA-MB-231) cells proved the potential applicability of the proposed system as a new drug vector in cancer therapy.

Welcome to talk about 56-17-7, If you have any questions, you can contact Curcio, M; Paoli, A; Cirillo, G; Di Pietro, S; Forestiero, M; Giordano, F; Mauro, L; Amantea, D; Di Bussolo, V; Nicoletta, FP; Iemma, F or send Email.. Name: 2,2′-Disulfanediyldiethanamine dihydrochloride

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

Recently I am researching about CYANINE DYES; IN-VIVO; PHOTODYNAMIC THERAPY; CANCER; NANOPARTICLES; RELEASE; NANOMEDICINE; CHEMOTHERAPY; DOXORUBICIN; METASTASES, Saw an article supported by the National Key Research and Development Program of China [2016YFA0201400]; Beijing Natural Science Foundation, Haidian, original innovation joint fund [17L20170]; National Project for Research and Development of Major Scientific Instruments [81727803]; Foundation for Innovative Research Groups of the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [81421004]. Category: thiazines. Published in IVYSPRING INT PUBL in LAKE HAVEN ,Authors: Mo, SY; Zhang, XT; Hameed, S; Zhou, YM; Dai, ZF. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

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.

Category: thiazines. 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 NIR-II Dual-Modal Optical Coherence Tomography and Photoacoustic Imaging-Guided Dose-Control Cancer Chemotherapy WOS:000535175700026 published article about DRUG-DELIVERY SYSTEMS; ANTICANCER DRUGS; LIPID NANOCAPSULES; SORAFENIB; CELL; NANOPARTICLES; MICELLES; INHIBITOR; MODELS in [Liu, Yubin; Xu, Mengze; Dai, Yunlu; Zhao, Qi; Zhu, Lipeng; Guan, Xiaowen; Li, Gang; Yuan, Zhen] Univ Macau, Fac Hlth Sci, Canc Ctr, Taipa 999078, Macao, Peoples R China; [Yuan, Zhen] Univ Macau, Ctr Cognit & Brain Sci, Taipa 999078, Macao, Peoples R China; [Liu, Yubin] Fujian Normal Univ, Coll Photon & Elect Engn, Fuzhou 350007, Peoples R China; [Yang, Sihua] South China Normal Univ, Coll Biophoton, MOE Key Lab Laser Life Sci, Guangzhou 510631, Peoples R China; [Yang, Sihua] South China Normal Univ, Coll Biophoton, Inst Laser Life Sci, Guangzhou 510631, Peoples R China in 2020.0, Cited 42.0. Recommanded Product: 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 study, an organic nanodrug delivery platform was constructed as a biocompatible cancer chemotherapeutic system, in which clinically approved sorafenib was loaded in the redox-responsive polymeric micelles, enabling dose-control release of drug to cancer tissues. In addition, visualizing tumor microenvironment changes is also essential for cancer chemotherapy, which can provide a priori and feedback control of drug delivery with reduced side effects. Therefore, second near-infrared window (NIR-II) dual-modal optical coherence tomography (OCT) and photoacoustic imaging were performed for real-time visualization of the tumor microenvironment changes in vivo during chemotherapy. In particular, the tumor angiogenesis, the vascular networks density change, and the quantitative total hemoglobin concentration and oxygen saturation of cancer tissues were carefully characterized for individually optimized cancer chemotherapy. It was discovered that the final tumor growth inhibition by dual-modal imaging-guided dose-control chemotherapy can be up to 94.6% during a 30-day treatment, which is much higher than the efficacy from presently utilized tumor treatment options. Herein, the combination of a redox-responsive theranostic agent and NIR-II dual-modal OCT and photoacoustic imaging paved a novel avenue both for guiding dosage control of antiangiogenic drugs to avoid toxic effects and for monitoring and inspecting tumor microenvironment changes while substantially enhancing tumor penetration and antitumor efficacy.

Recommanded Product: 2,2′-Disulfanediyldiethanamine dihydrochloride. 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

Authors Hayashida, O; Tanaka, Y; Miyazaki, T in MDPI published article about MOLECULAR RECOGNITION; DISULFIDE BONDS; CHEMISTRY; MACROCYCLES; COMPLEXES; BREAKING in [Hayashida, Osamu; Tanaka, Yudai; Miyazaki, Takaaki] Fukuoka Univ, Dept Chem, Fac Sci, Nanakuma 8-19-1, Fukuoka 8140180, Japan in 2021.0, Cited 43.0. Name: 2,2′-Disulfanediyldiethanamine dihydrochloride. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7

A water-soluble cyclophane dimer having two disulfide groups as a reduction-responsive cleavable bond as well as several acidic and basic functional groups as a pH-responsive ionizable group 1 was successfully synthesized. It was found that 1 showed pH-dependent guest-binding behavior. That is, 1 strongly bound an anionic guest, 6-p-toluidinonaphthalene-2-sulfonate (TNS) with binding constant (K/M-1) for 1:1 host-guest complexes of 9.6 x 10(4) M-1 at pH 3.8, which was larger than those at pH 7.4 and 10.7 (6.0 x 10(4) and 2.4 x 10(4) M-1, respectively), indicating a favorable electrostatic interaction between anionic guest and net cationic 1. What is more, release of the entrapped guest molecules by 1 was easily controlled by pH stimulus. Large favorable enthalpies (Delta H) for formation of host-guest complexes were obtained under the pH conditions employed, suggesting that electrostatic interaction between anionic TNS and 1 was the most important driving force for host-guest complexation. Such contributions of Delta H for formation of host-guest complexes decreased along with increased pH values from acidic to basic solutions. Upon addition of dithiothreitol (DTT) as a reducing reagent to an aqueous PBS buffer (pH 7.4) containing 1 and TNS, the fluorescence intensity originating from the bound guest molecules decreased gradually. A treatment of 1 with DTT gave 2, having less guest-binding affinity by the cleavage of disulfide bonds of 1. Consequently, almost all entrapped guest molecules by 1 were released from the host. Moreover, such reduction-responsive cleavage of 1 and release of bound guest molecules was performed more rapidly in aqueous buffer at pH 10.7.

Welcome to talk about 56-17-7, If you have any questions, you can contact Hayashida, O; Tanaka, Y; Miyazaki, T or send Email.. Name: 2,2′-Disulfanediyldiethanamine dihydrochloride

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