Category: 71989-31-6

Acar, Tayfun published the artcileAngiotensin(1-7)-stearic acid conjugate: synthesis and characterization, Name: Fmoc-Pro-OH, the publication is Journal of the Turkish Chemical Society, Section A: Chemistry (2022), 9(2), 331-338, database is CAplus.

The novel coronavirus, SARS-CoV-2, broken out as the COVID-19 epidemic, is transported into the cytoplasm by angiotensin-converting enzyme-2 (ACE2), a key protein of the renin-angiotensin-system (RAS). ACE2 is a protective protein that reduces angiotensin (Ang) II, the bioactive component of RAS, by converting it to its potent antagonist, Ang-(1-7) peptide, in order to provide a pathophysiol. response to stimuli. Although ACE-2 is upregulated especially in pulmonary endothelial cells and alveolar epithelial cells, downregulation of ACE-2 in the lung owing to loss of key regulatory factors explains the enzyme-dependent lethality of SARS-CoV-2. The N-terminal domain (NTD) of S1, one of the protein subunits of coronaviruses, is known to recognize acetylated sialic acids on glycosylated cell surface receptors. In this study, the stearic acid-peptide conjugate mimicking the sialic acid structure was synthesized, which will be able to balance uncontrolled inflammatory response and excessive cytokine production, and depending on these to suppress pneumonia and acute respiratory distress syndrome (ARDS), against SARS-CoV-2. It was expected that fatty acid acylation would greatly enhance cellular internalization and cytosolic distribution of the peptide through the cell membrane. Thus, we synthesized fatty acyl derivative of the N-Ac-Gly4-Ang (1-7) peptide. The peptide was synthesized using Fmoc/tBu solid-phase peptide chem. and characterized by FT-IR, Zetasizer, and LC-ESI-MS. This study provided more detailed insights into understanding and meeting the basic structural requirements for optimal cellular delivery and formulation of the stearyl Ang (1-7)-peptide conjugate.

Journal of the Turkish Chemical Society, Section A: Chemistry published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Name: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Rol, Alvaro published the artcileStructure-based design of a Cortistatin analogue with immunomodulatory activity in models of inflammatory bowel disease, SDS of cas: 71989-31-6, the publication is Nature Communications (2021), 12(1), 1869, database is CAplus and MEDLINE.

Ulcerative colitis and Crohn¡äs disease are forms of inflammatory bowel disease whose incidence and prevalence are increasing worldwide. These diseases lead to chronic inflammation of the gastrointestinal tract as a result of an abnormal response of the immune system. Recent studies positioned Cortistatin, which shows low stability in plasma, as a candidate for IBD treatment. Here, using NMR structural information, we design five Cortistatin analogs adopting selected native Cortistatin conformations in solution One of them, A5, preserves the anti-inflammatory and immunomodulatory activities of Cortistatin in vitro and in mouse models of the disease. Addnl., A5 displays an increased half-life in serum and a unique receptor binding profile, thereby overcoming the limitations of the native Cortistatin as a therapeutic agent. This study provides an efficient approach to the rational design of Cortistatin analogs and opens up new possibilities for the treatment of patients that fail to respond to other therapies.

Nature Communications published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, SDS of cas: 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Patil, Nitin A. published the artcileAn efficient approach for the design and synthesis of antimicrobial peptide-peptide nucleic acid conjugates, Synthetic Route of 71989-31-6, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2022), 843163, database is CAplus and MEDLINE.

Peptide-Peptide Nucleic Acid (PNA) conjugates targeting essential bacterial genes have shown significant potential in developing novel antisense antimicrobials. The majority of efforts in this area are focused on identifying different PNA targets and the selection of peptides to deliver the peptide-PNA conjugates to Gram-neg. bacteria. Notably, the selection of a linkage strategy to form peptide-PNA conjugate plays an important role in the effective delivery of PNAs. Recently, a unique Cysteine- 2-Cyanoisonicotinamide (Cys- CINA) click chem. has been employed for the synthesis of cyclic peptides. Considering the high selectivity of this chem., we investigated the efficiency of Cys-CINA conjugation to synthesize novel antimicrobial peptide-PNA conjugates. The PNA targeting acyl carrier protein gene (acpP), when conjugated to the membrane-active antimicrobial peptides (polymyxin), showed improvement in antimicrobial activity against multidrug-resistant Gram-neg. Acinetobacter baumannii. Thus, indicating that the Cys-CINA conjugation is an effective strategy to link the antisense oligonucleotides with antimicrobial peptides. Therefore, the Cys-CINA conjugation opens an exciting prospect for antimicrobial drug development.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Synthetic Route of 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tsuei, Michael published the artcileInterfacial Polyelectrolyte-Surfactant Complexes Regulate Escape of Microdroplets Elastically Trapped in Thermotropic Liquid Crystals, Quality Control of 71989-31-6, the publication is Langmuir (2022), 38(1), 332-342, database is CAplus and MEDLINE.

Polyelectrolytes adsorbed at soft interfaces are used in contexts such as materials synthesis, stabilization of emulsions, and control of rheol. Here, we explore how polyelectrolyte adsorption to aqueous interfaces of thermotropic liquid crystals (LCs) influences surfactant-stabilized aqueous microdroplets that are elastically trapped within the LC. We find that adsorption of poly(diallyldimethylammonium chloride) (PDDA) to the interface of a nematic phase of 4-cyano-4¡ä-pentylbiphenyl (5CB) triggers the ejection of microdroplets decorated with sodium dodecylsulfate (SDS), consistent with an attractive elec. double layer interaction between the microdroplets and LC interface. The concentration of PDDA that triggers release of the microdroplets (millimolar), however, is three orders of magnitude higher than that which saturates the LC interfacial charge (micromolar). Observation of a transient reorientation of the LC during escape of microdroplets leads us to conclude that complexes of PDDA and SDS form at the LC interface and thereby regulate interfacial charge and microdroplet escape. Poly(sodium 4-styrenesulfonate) (PSS) also triggers escape of dodecyltrimethylammonium bromide (DTAB)-decorated aqueous microdroplets from 5CB with dynamics consistent with the formation of interfacial polyelectrolyte-surfactant complexes. In contrast to PDDA-SDS, however, we do not observe a transient reorientation of the LC when using PSS-DTAB, reflecting weak association of DTAB and PSS and slow kinetics of formation of PSS-DTAB complexes. Our results reveal the central role of polyelectrolyte-surfactant dynamics in regulating the escape of the microdroplets and, more broadly, that LCs offer the basis of a novel probe of the structure and properties of polyelectrolyte-surfactant complexes at interfaces. We demonstrate the utility of these new insights by triggering the ejection of microdroplets from LCs using peptide-polymer amphiphiles that switch their net charge upon being processed by enzymes. Overall, our results provide fresh insight into the formation of polyelectrolyte-surfactant complexes at aqueous-LC interfaces and new principles for the design of responsive soft matter.

Langmuir published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C15H14O3, Quality Control of 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

McCoy, Michael A. published the artcileBiophysical Survey of Small-Molecule ¦Â-Catenin Inhibitors: A Cautionary Tale, Name: Fmoc-Pro-OH, the publication is Journal of Medicinal Chemistry (2022), 65(10), 7246-7261, database is CAplus and MEDLINE.

The canonical Wingless-related integration site signaling pathway plays a critical role in human physiol., and its dysregulation can lead to an array of diseases. ¦Â-Catenin is a multifunctional protein within this pathway and an attractive yet challenging therapeutic target, most notably in oncol. This has stimulated the search for potent small-mol. inhibitors binding directly to the ¦Â-catenin surface to inhibit its protein-protein interactions and downstream signaling. Here, we provide an account of the claimed (and some putative) small-mol. ligands of ¦Â-catenin from the literature. Through in silico anal., we show that most of these mols. contain promiscuous chem. substructures notorious for interfering with screening assays. Finally, and in line with this anal., we demonstrate using orthogonal biophys. techniques that none of the examined small mols. bind at the surface of ¦Â-catenin. While shedding doubts on their reported mode of action, this study also reaffirms ¦Â-catenin as a prominent target in drug discovery.

Journal of Medicinal Chemistry published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Name: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Dewangan, Rikeshwer Prasad published the artcileCell-penetrating peptide conjugates of indole-3-acetic acid-based DNA primase/Gyrase inhibitors as potent anti-tubercular agents against planktonic and biofilm culture of Mycobacterium smegmatis, Safety of Fmoc-Pro-OH, the publication is Chemical Biology & Drug Design (2021), 98(5), 722-732, database is CAplus and MEDLINE.

Mycobacterium tuberculosis (Mtb) is a pathogenic bacterium that caused 1.5 million fatalities globally in 2018. New strains of Mtb resistant to all known classes of antibiotics pose a global healthcare problem. In this work, we have conjugated novel indole-3-acetic acid-based DNA primase/gyrase inhibitor with cell-penetrating peptide via cleavable and non-cleavable bonds. For non-cleavable linkage, inhibitor was conjugated with peptide via an amide bond to the N-terminus, whereas a cleavable linkage was obtained by conjugating the inhibitor through a disulfide bond. We performed the conjugation of the inhibitor either directly on a solid surface or by using solution-phase chem. M. smegmatis (non-pathogenic model of Mtb) was used to determine the minimal inhibitory concentration (MIC) of the synthetic conjugates. Conjugates were found more active as compared to free inhibitor mols. Strikingly, the conjugate also impairs the development of biofilm, showing a therapeutic potential against infections caused by both planktonic and sessile forms of mycobacterium species.

Chemical Biology & Drug Design published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Safety of Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Rani, Anjeeta published the artcileProfiling the impact of choline chloride on the self-assembly of collagen mimetic peptide (Pro-Hyp-Gly)₁₀, SDS of cas: 71989-31-6, the publication is Process Biochemistry (Oxford, United Kingdom) (2022), 26-34, database is CAplus.

The promising applications of collagen in tissue engineering, regenerative medicine and biomaterials have intrigued great interest in development of collagen mimetic peptides (CMPs). In past decades, the large-scale collagen structures via the self-assembly of small CMPs have been extensively explored. Moreover, CMPs entail novel strategies in order to play a critical role in the discovery of new generation biomaterials. In this regard, we herein have synthesized a CMP, (Pro-Hyp-Gly)₁₀ i.e.POG10. CMP has been examined in the presence of varying concentration of choline chloride (ChCl) by using various biophys. techniques such as CD (CD), UV-vis spectroscopy, fluorescence spectroscopy, Fourier transform IR spectroscopy (FTIR) spectroscopy, differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and dynamic light scattering (DLS). For the first time, we have demonstrated the use of choline chloride (ChCl) to manipulate stability and aggregation of CMP triple helixes in order to delineate the factors responsible for the stability of triple helixes.

Process Biochemistry (Oxford, United Kingdom) published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, SDS of cas: 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Allouche, Emmanuelle M. D. published the artcileN-Terminal selective C-H azidation of proline-containing peptides: A platform for late-stage diversification, Recommanded Product: Fmoc-Pro-OH, the publication is Chemistry – A European Journal (2022), 28(17), e202200368, database is CAplus and MEDLINE.

A methodol. for the C-H azidation of N-terminal proline-containing peptides was developed employing only com. available reagents. Peptides bearing a broad range of functionalities and containing up to 6 amino acids were selectively azidated at the carbamate-protected N-terminal residue in presence of the numerous other functional groups present on the mols. Post-functionalizations of the obtained aminal compounds were achieved: cycloaddition reactions or C-C bond formations via a sequence of imine formation/nucleophilic addition were performed, offering an easy access to diversified peptides.

Chemistry – A European Journal published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Recommanded Product: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Khan, Sadiq Noor published the artcilePeptide conjugates of 18¦Â-glycyrrhetinic acid as potent inhibitors of ¦Á-glucosidase and AGEs-induced oxidation, SDS of cas: 71989-31-6, the publication is European Journal of Pharmaceutical Sciences (2022), 106045, database is CAplus and MEDLINE.

18¦Â-Glycyrrhetinic acid (18¦Â-GA) is known for several biol. activities, and has been the focus of extensive research for the development of therapeutic agents. In the current study, 18¦Â-GA-peptide conjugates 2-11 were evaluated for their in vitro ¦Á-glucosidase inhibitory and antiglycation activities. Structure-activity relationship (SAR) established and mol. interactions of active bioconjugates with the enzyme¡äs binding sites were predicted through mol. modeling approach. In tripeptide moiety of conjugates 2-11, peptide residue at position 1 was found to have a significant role on ¦Á-glucosidase inhibition. The most active 18¦Â-GA-peptide conjugates 5 (18¦Â-GA-Cys¹-Tyr²-Gly³), and 8 (18¦Â-GA-Pro¹-Tyr²-Gly³) exhibited several-fold potent ¦Á-glucosidase inhibition (IC₅₀ values 20-28 ¦¬M), as compared to standard drug acarbose (IC₅₀ = 875.8 ¡À 2.10 ¦¬M). Kinetic studies of potent compounds, 4-8 revealed that conjugate 5 exhibits competitive-type of inhibition, while conjugates 6-8 showed a non-competitive type of inhibition. The simulation studies also supported the kinetic results that conjugate 5 (18¦Â-GA-Cys¹-Tyr²-Gly³) inhibits the ¦Á-glucosidase enzyme by blocking its substrate binding site. AGEs-induced NO? inhibitors play an important role in controlling the inflammation associated with diabetes mellitus. The peptide conjugates 2-11 were also evaluated in vitro for AGEs-induced NO? inhibition using RAW 264.7 macrophage cell line. Our data revealed that conjugates 7-10 were the more potent AGEs-induced NO? inhibitors, comparable to standards rutin, and PDTC. The peptide conjugate 5 (a competitive inhibitor of ¦Á-glucosidase) also exhibited a strong inhibitory activity against AGEs-induced NO? production Furthermore, peptide conjugates 2-11 were found non-cytotoxic to mouse fibroblast NIH-3T3, and murine macrophages RAW 264.7 cell lines. In conclusion, our data demonstrates that besides possessing strong ¦Á-glucosidase inhibition, the newly synthesized peptide conjugates also alleviated the AGEs-induced NO? production in RAW macrophages. Dual inhibition of ¦Á-glucosidase enzyme, and AGEs-induced NO? production by 18¦Â-GA-peptide conjugates qualify them for further research in anti-diabetic drug discovery.

European Journal of Pharmaceutical Sciences published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, SDS of cas: 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Lopez-Vidal, Eva M. published the artcileDeep Learning Enables Discovery of a Short Nuclear Targeting Peptide for Efficient Delivery of Antisense Oligomers, Recommanded Product: Fmoc-Pro-OH, the publication is JACS Au (2021), 1(11), 2009-2020, database is CAplus and MEDLINE.

Therapeutic macromols. such as proteins and oligonucleotides can be highly efficacious but are often limited to extracellular targets due to the cell¡äs impermeable membrane. Cell-penetrating peptides (CPPs) are able to deliver such macromols. into cells, but limited structure-activity relationships and inconsistent literature reports make it difficult to design effective CPPs for a given cargo. For example, polyarginine motifs are common in CPPs, promoting cell uptake at the expense of systemic toxicity. Machine learning may be able to address this challenge by bridging gaps between exptl. data in order to discern sequence-activity relationships that evade our intuition. Our earlier data set and deep learning model led to the design of miniproteins (>40 amino acids) for antisense delivery. Here, we leveraged and expanded our model with data augmentation in the short CPP sequence space of the data set to extrapolate and discover short, low-arginine-content CPPs that would be easier to synthesize and amenable to rapid conjugation to desired cargo, and with minimal in vivo toxicity. The lead predicted peptide, termed P6, is as active as a polyarginine CPP for the delivery of an antisense oligomer, while having only one arginine side chain and 18 total residues. We determined the pentalysine motif and the C-terminal cysteine of P6 to be the main drivers of activity. The antisense conjugate was able to enhance corrective splicing in an animal model to produce functional eGFP in heart tissue in vivo while remaining nontoxic up to a dose of 60 mg/kg. In addition, P6 was able to deliver an enzyme to the cytosol of cells. Our findings suggest that, given a data set of long CPPs, we can discover by extrapolation short, active sequences that deliver antisense oligomers.

JACS Au published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Recommanded Product: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia