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ArticleRecent patents on biotechnology2024

Designing a Secretory form of RTX-A as an Anticancer Toxin: An

Mortaza Taheri-Anganeh, Navid Nezafat, Saba Gharibi, Seyyed Hossein Khatami, Farzaneh Vahedi, Zahra Shabaninejad, Marzieh Asadi, Amir Savardashtaki, Ahmad Movahedpour, Hassan Ghasemi

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Article in Recent patents on biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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10 authors.

Mortaza Taheri-AnganehCellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.ORCID 0000-0002-9659-7491
Navid NezafatPharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.ORCID 0000-0001-8103-2685
Saba GharibiSchool of Exercise and Nutrition Sciences, Faculty of Health, Deakin University, Melbourne, Australia.
Seyyed Hossein KhatamiDepartment of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Farzaneh VahediDepartment of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
Zahra ShabaninejadDepartment of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
Marzieh AsadiDepartment of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
Amir SavardashtakiDepartment of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
Ahmad MovahedpourBehbahan Faculty of Medical Sciences, Behbahan, Iran.ORCID 0000-0002-0576-4435
Hassan GhasemiAbadan University of Medical Sciences, Abadan, Iran.

Funding

Abadan University of Medical Sciences Grant Number: 1401U-1470
6 · The paper itself

Abstract

backgroundCancer is a leading cause of death and a significant public health issue worldwide. Standard treatment methods such as chemotherapy, radiotherapy, and surgery are only sometimes effective. Therefore, new therapeutic approaches are needed for cancer treatment. Sea anemone actinoporins are pore-forming toxins (PFTs) with membranolytic activities. RTX-A is a type of PFT that interacts with membrane phospholipids, resulting in pore formation. The synthesis of recombinant proteins in a secretory form has several advantages, including protein solubility and easy purification. In this study, we aimed to discover suitable signal peptides for producing RTX-A in Bacillus subtilis in a secretory form.

methodsSignal peptides were selected from the Signal Peptide Web Server. The probability and secretion pathways of the selected signal peptides were evaluated using the SignalP server. ProtParam and Protein-sol were used to predict the physico-chemical properties and solubility. AlgPred was used to predict the allergenicity of RTX-A linked to suitable signal peptides. Non-allergenic, stable, and soluble signal peptides fused to proteins were chosen, and their secondary and tertiary structures were predicted using GOR IV and I-TASSER, respectively. The PROCHECK server performed the validation of 3D structures.

resultsAccording to bioinformatics analysis, the fusion forms of OSMY_ECOLI and MALE_ECOLI linked to RTX-A were identified as suitable signal peptides. The final proteins with signal peptides were stable, soluble, and non-allergenic for the human body. Moreover, they had appropriate secondary and tertiary structures.

conclusionThe signal above peptides appears ideal for rationalizing secretory and soluble RTX-A. Therefore, the signal peptides found in this study should be further investigated through experimental researches and patents.

Indexed as

Antineoplastic AgentsBacillus subtilisComputer SimulationAnimalsCnidarian VenomsComputational BiologyHumansPatents as TopicProtein Sorting SignalsSea AnemonesSolubilityactinoporin RTX-A, Heteractis crispaAntineoplastic AgentsCnidarian VenomsProtein Sorting Signalsactinoporinsanticancer toxin.cancerIn silicoRTX-Asignal peptide

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.