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10.1371/journal.pone.0247396

http://scihub22266oqcxt.onion/10.1371/journal.pone.0247396
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33606823!7894964!33606823
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suck abstract from ncbi


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pmid33606823      PLoS+One 2021 ; 16 (2): e0247396
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  • Exploring novel and potent cell penetrating peptides in the proteome of SARS-COV-2 using bioinformatics approaches #MMPMID33606823
  • Kardani K; Bolhassani A
  • PLoS One 2021[]; 16 (2): e0247396 PMID33606823show ga
  • Among various delivery systems for vaccine and drug delivery, cell-penetrating peptides (CPPs) have been known as a potent delivery system because of their capability to penetrate cell membranes and deliver some types of cargoes into cells. Several CPPs were found in the proteome of viruses such as Tat originated from human immunodeficiency virus-1 (HIV-1), and VP22 derived from herpes simplex virus-1 (HSV-1). In the current study, a wide-range of CPPs was identified in the proteome of SARS-CoV-2, a new member of coronaviruses family, using in silico analyses. These CPPs may play a main role for high penetration of virus into cells and infection of host. At first, we submitted the proteome of SARS-CoV-2 to CellPPD web server that resulted in a huge number of CPPs with ten residues in length. Afterward, we submitted the predicted CPPs to C2Pred web server for evaluation of the probability of each peptide. Then, the uptake efficiency of each peptide was investigated using CPPred-RF and MLCPP web servers. Next, the physicochemical properties of the predicted CPPs including net charge, theoretical isoelectric point (pI), amphipathicity, molecular weight, and water solubility were calculated using protparam and pepcalc tools. In addition, the probability of membrane binding potential and cellular localization of each CPP were estimated by Boman index using APD3 web server, D factor, and TMHMM web server. On the other hand, the immunogenicity, toxicity, allergenicity, hemolytic potency, and half-life of CPPs were predicted using various web servers. Finally, the tertiary structure and the helical wheel projection of some CPPs were predicted by PEP-FOLD3 and Heliquest web servers, respectively. These CPPs were divided into: a) CPP containing tumor homing motif (RGD) and/or tumor penetrating motif (RXXR); b) CPP with the highest Boman index; c) CPP with high half-life (~100 hour) in mammalian cells, and d) CPP with +5.00 net charge. Based on the results, we found a large number of novel CPPs with various features. Some of these CPPs possess tumor-specific motifs which can be evaluated in cancer therapy. Furthermore, the novel and potent CPPs derived from SARS-CoV-2 may be used alone or conjugated to some sequences such as nuclear localization sequence (NLS) for vaccine and drug delivery.
  • |*Computational Biology[MESH]
  • |*Computer Simulation[MESH]
  • |*Drug Delivery Systems[MESH]
  • |*Proteome[MESH]
  • |Animals[MESH]
  • |COVID-19[MESH]
  • |COVID-19 Vaccines/*chemistry/genetics/metabolism[MESH]
  • |Cell-Penetrating Peptides/*chemistry/genetics/metabolism[MESH]
  • |HIV-1/chemistry/genetics[MESH]
  • |Herpesvirus 1, Human/chemistry/genetics[MESH]
  • |Humans[MESH]
  • |SARS-CoV-2/*chemistry/genetics/metabolism[MESH]
  • |Viral Structural Proteins/chemistry/genetics[MESH]


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