scholarly journals A magnetic T7 peptide&AS1411 aptamer-modified microemulsion for triple glioma-targeted delivery of shikonin and docetaxel

2021 ◽  
Author(s):  
Hong Wang ◽  
Wanghao Chen ◽  
Guojian Wu ◽  
Jun Kong ◽  
Shaofei Yuan ◽  
...  
Keyword(s):  
Targeted Delivery ◽  
As1411 Aptamer

scholarly journals Chemotherapeutic, Toxin, and Therapeutic Protein Delivery via Nucleolin Aptamer-functionalized Nanoplatforms for Targeted Cancer Therapy

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Pouya Safarzadeh Kozani ◽  
Pooria Safarzadeh Kozani ◽  
Fatemeh Rahbarizadeh
Keyword(s):  
Cancer Therapy ◽  
Targeted Delivery ◽  
Protein Delivery ◽  
Therapeutic Potential ◽  
Therapeutic Protein ◽  
Targeted Cancer Therapy ◽  
Chemotherapeutic Drugs ◽  
Different Types ◽  
As1411 Aptamer ◽  
Targeting Peptide

: Nucleolin is a protein abundantly present in the nucleolus, but its expression on the surface of cells is potentially associated with various types of malignancies. So far, several nucleolin-targeting strategies, including the nucleolin-targeting peptide, anti-nucleolin pseudopeptides, anti-nucleolin antibodies, and the anti-nucleolin aptamer, AS1411, have been developed and investigated in different types of studies. The AS1411 aptamer has been known as the outstanding approach for targeting nucleolin with superior specificity and therapeutic potential in comparison with other targeting strategies. In this review, we highlight different nucleolin-targeting strategies for the targeted delivery of chemotherapeutic drugs, proteins with therapeutic potential, and toxins.

pH Dependent Release Potential of Natural Polymers in Sustained Release of Ornidazole From Colon Targeted Delivery System)

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Sharma Pankaj ◽  
Tailang Mukul
Keyword(s):  
Drug Release ◽  
Delivery System ◽  
Targeted Delivery ◽  
Guar Gum ◽  
Acidic Environment ◽  
Natural Polymers ◽  
Weight Variation ◽  
Curve Determination ◽  
Preformulation Studies

The aim of present work was to prepare colon specific delivery system of Ornidazole using different ratio of shellac, zein and guar gum. From study of various literature it revealed that shellac, zein and guar gum released drug from dosage form at the pH of 6.9, 11.5, 7-9 respectively. The main problem associated with colon targeted drug delivery system is degradation of drug in the acidic environment of stomach to circumvent the present problem different combinations of shellac, zein and guar gum were employed in the formulation of colon targeted tablet. Several preformulation parameters were determined such as melting point, FTIR spectroscopy, preparation of calibration curve, determination of λmax and partition coefficient. After the preformulation studies, next steps were preparation of core tablets, evaluation of core of tablets and coating of tablets. The data obtained from preformulation study seven formulations were developed and evaluated for various parameters. Based on evaluated parameter such as weight variation, friability, dissolution study, invitro drug release etc. the F7 formulation show better results colon targeted tablets. Drug content in F7 formulation was 95% and drug release after 6 hrs was 96%. Formulation containing combination of shellac, zein and guar gum released least amount of drug in the acidic environment of stomach and released most of the drug in colon. It is evide

Ligand Design for Specific MHC Class I Molecules on the Cell Surface

2020 ◽  
Author(s):  
Xizheng Sun ◽  
Reika Tokunaga ◽  
Yoko Nagai ◽  
Ryo Miyahara ◽  
Akihiro Kishimura ◽  
...  
Keyword(s):  
Cell Surface ◽  
Mhc Class I ◽  
Targeted Delivery ◽  
Peptide Ligands ◽  
Class I ◽  
Class I Mhc ◽  
Mhc I ◽  
Histocompatibility Complex ◽  
High Binding Affinity ◽  
Mhc Class I Molecules

<p><a></a><a></a><a>We have validated that ligand peptides designed from antigen peptides could be used for targeting specific major histocompatibility complex class I (MHC-I)</a> molecules on cell surface. To design the ligand peptides, we used reported antigen peptides for each MHC-I molecule with high binding affinity. From the crystal structure of the peptide/MHC-I complexes, we determined a modifiable residue in the antigen peptides and replaced this residue with a lysine with an ε-amine group modified with functional molecules. The designed ligand peptides successfully bound to cells expressing the corresponding MHC-I molecules via exchange of peptides bound to the MHC-I. We demonstrated that the peptide ligands could be used to transport a protein or a liposome to cells expressing the corresponding MHC-I. The present strategy may be useful for targeted delivery to cells overexpressing MHC-I, which have been observed autoimmune diseases.</p>

Sign in / Sign up

Export Citation Format

Share Document