Month: January 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

An article Aldehyde-mediated bioconjugation via in situ generated ylides WOS:000502103100008 published article about NEUTRAL PH; PROTEINS; TYROSINE; PEPTIDOGLYCAN; HYDRAZONES; STABILITY; LIGATION; REAGENTS; PEPTIDE in [Parmar, Sangeeta; Pawar, Sharad P.; Iyer, Ramkumar; Kalia, Dimpy] IISER Bhopal, Dept Chem, Bhopal Bypass Rd, Bhopal 462066, Madhya Pradesh, India in 2019.0, Cited 51.0. Quality Control 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

A technically simple approach for rapid, high-yielding and site-selective bioconjugation has been developed for both in vitro and cellular applications. This method involves the generation of maleimido-phosphonium ylides via 4-nitrophenol catalysis under physiological conditions followed by their Wittig reactions with aldehyde-appended biomolecules.

Welcome to talk about 56-17-7, If you have any questions, you can contact Parmar, S; Pawar, SP; Iyer, R; Kalia, D or send Email.. Quality Control of 2,2′-Disulfanediyldiethanamine dihydrochloride

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

In 2020.0 DRUG DELIV published article about LOADING CAPACITY; DRUG; DOXORUBICIN; APATINIB; NANOMEDICINE; THERAPEUTICS; CONJUGATE in [Zhang, Xiaoqing; Ren, Xiaomei; Tang, Jiayin; Wang, Jiangtao; He, Peng; Yao, Chang; Bian, Weihe] Nanjing Univ Chinese Med, Jiangsu Prov Hosp TCM, Dept Mastopathy, Affiliated Hosp, Nanjing, Peoples R China; [Zhang, Xiang; Sun, Lizhu] Xuzhou Med Univ, Affiliated Shuyang Hosp, Dept Oncol, Suqian, Peoples R China in 2020.0, Cited 42.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7. Safety 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.

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.. Safety of 2,2′-Disulfanediyldiethanamine dihydrochloride

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

I found the field of Chemistry very interesting. Saw the article A reversibly mechanochromic conjugated polymer published in 2019.0. Quality Control of 2,2′-Disulfanediyldiethanamine dihydrochloride, Reprint Addresses Kim, JM (corresponding author), Hanyang Univ, Dept Chem Engn, Seoul 04763, South Korea.; Kim, JM (corresponding author), Hanyang Univ, Inst Nano Sci & Technol, Seoul 04763, South Korea.. The CAS is 56-17-7. Through research, I have a further understanding and discovery of 2,2′-Disulfanediyldiethanamine dihydrochloride

A reversibly mechanochromic conjugated polymer has been developed. The polymer, polydiacetylene (PDA), obtained by thermal polymerization of a diphenyldisulfide-containing bisdiacetylene undergoes a blue-to-green color change upon grinding. The original blue color of the PDA is regenerated via a metastable red-color state by utilizing a thermochromic (heating-cooling) process.

Quality Control of 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

In 2020.0 J CONTROL RELEASE published article about IRON-OXIDE NANOPARTICLES; MAGNETIC-RESONANCE; POLYMERIC MICELLES; ENHANCED PERMEABILITY; CONTRAST AGENTS; NANOPLATFORM; CHITOSAN; DESIGN in [Fu, Yan; Yang, Hong Yu] Jilin Inst Chem Technol, Coll Mat Sci & Engn, Jilin 132022, Jilin, Peoples R China; [Wang, Nannan] Jilin Inst Chem Technol, Coll Biol & Food Engn, Jilin 132022, Jilin, Peoples R China; [Li, Yi] Jiaxing Univ, Coll Mat & Text Engn, Jiaxing 314001, Zhejiang, Peoples R China; [Wu, Te Peng; Lee, Doo Sung] Sungkyunkwan Univ, Theranost Macromol Res Ctr, Suwon 16419, Gyeonggi Do, South Korea; [Wu, Te Peng; Lee, Doo Sung] Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, Gyeonggi Do, South Korea; [Jang, Moon-Sun; Lee, Jung Hee] Sungkyunkwan Univ, Samsung Med Ctr, Sch Med, Dept Radiol, Seoul 06351, South Korea; [Jang, Moon-Sun; Lee, Jung Hee] Samsung Biomed Res Inst, Ctr Mol & Cellular Imaging, Seoul 06351, South Korea in 2020.0, Cited 53.0. The Name is 2,2′-Disulfanediyldiethanamine dihydrochloride. Through research, I have a further understanding and discovery of 56-17-7. Safety of 2,2′-Disulfanediyldiethanamine dihydrochloride

Multifunctional nanosystems that can transport therapeutic and diagnostic agents into tumor sites and activate their respective functions via tumor-microenvironment recognition are highly desirable for clinical applications. We fabricated pH and redox dual-activatable self-assembled nanotheranostics (named as DA-SNs) via coordination-driven self-assembly of chlorin e6 (Ce6) disulfide-linked pH sensitive polymer ligand, poly (isobutylene-alt-maleic anhydride-graft-methoxy-poly (ethyleneglycol)-graft-imidazole-graft-Cystamine-Ce6) [PIMA-mPEG-API-SS-Ce6], and gadolinium ions (Gd3+). DA-SNs exhibited uniform particle size of similar to 48 nm, excellent stability, and inherent biosafety. Negatively charged DA-SNs could prolong blood circulation time (t(1/2) = 2.91 h) and improve tumor accumulation. Moreover, DA-SNs could undergo surface charge switch from negative charge to positive one in a slightly acidic tumor extracellular environment (pH 6.8), thus enhancing cellular uptake. After entering tumor cells, fluorescence, photodynamic therapeutic activity, and T1MR contrast from DA-SNs could be activated within this intracellular environment with lowered pH and high level of GSH. Importantly, human tumors implanted in mice could be successfully visualized via distinct pH and redox dual-sensitive T1MR contrast and fluorescence imaging, indicating that DA-SNs could serve as a dual-modal MR/fluorescence imaging probe for tumor-targeting diagnosis. In addition, DA-SNs exhibited superior photodynamic therapeutic efficiency with negligible side effects. Therefore, this DA-SN shows great promise for synergistic photodynamic therapy and diagnostic imaging.

Safety of 2,2′-Disulfanediyldiethanamine dihydrochloride. Welcome to talk about 56-17-7, If you have any questions, you can contact Fu, Y; Jang, MS; Wang, NN; Li, Y; Wu, T; Lee, JH; Lee, DS; Yang, HY or send Email.

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

An article Glutathione-responsive disassembly of disulfide dicyanine for tumor imaging with reduction in background signal intensity WOS:000508008300009 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. Recommanded Product: 56-17-7

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.

Recommanded Product: 56-17-7. 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