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Facile synthesis of insulin fusion derivatives through sortase A ligation

Acta Pharmaceutica Sinica B 2021年第9期11卷 2719-2725页

作者： Maria M.Disotuar Jake A.Smith Jinze Li steve alam Nai-Pin Lin Danny Hung-Chieh Chou Department of Biochemistry School of MedicineUniversity of UtahSalt Lake CityUT 84112USA Division of Endocrinology and Diabetes Department of PediatricsSchool of MedicineStanford UniversityPalo AltoCA 94305USA

Insulin derivatives such as insulin detemir and insulin degludec are *** and Drug Administration(FDA)-approved long-acting insulin currently used by millions of people with *** derivatives are modified in C-terminal B29 lysine to retain insulin *** and efficient methods for facile synthesis of insulin derivatives may lead to new discovery of therapeutic ***,we report a new method using sortase A(SrtA)-mediated ligation for the synthesis of insulin derivatives with high efficiency and functional group tolerance in the C-terminal B *** new insulin molecule(Ins-SA) with an SrtA-recognizing motif can be conjugated to diverse groups with N-terminal oligoglycines to generate new insulin *** further demonstrated that a new insulin derivative synthesized by this SrtA-mediated ligation shows strong cellular and in vivo *** enzymatic method can therefore be used for future insulin design and development.

关键词： Diabetes mellitus Insulin synthesis Sortase A(SrtA)ligation Albumin-binding peptide SA21 Long-acting insulin

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Insecticidal Potential of α-Pinene and β-Caryophyllene against Myzus persicae and Their Impacts on Gene Expression

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Phyton-International Journal of Experimental Botany 2023年第7期92卷 1943-1954页

作者： Talha Ali Chohan Tahir Ali Chohan Muhammad Zahid Mumtaz Muhammad Waqar alam Salah ud Din Iqra Naseer Ayesha Riaz Tayyeba Naseem Areeba Iftikhar Dur ENajaf Ali Mubashir Hassan Hayssam M.Ali Institute of Molecular Biology and Biotechnology(IMBB) The University of LahoreLahore54000Pakistan Institute of Pharmaceutical Sciences University of Veterinary and Animal SciencesLahore54000Pakistan Deparment of Plant Pathology University of OkaraOkara56300Pakistan Deparment of Bioinformatics University of OkaraOkara56300Pakistan Department of Soil Science The Islamia University of BahawalpurBahawalpur63100Pakistan Department of Zoology The Islamia University of BahawalpurBahawalpur(Bahawalnagar Campus)63100Pakistan The steve and Cindy Rasmussen Institute for Genomic Medicine Nationwide Children’s HospitalColumbusOhio43205USA Department of Botany and Microbiology College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Myzus persicae(***)is now considered a threat to agricultural crops due to economic *** synthetic insecticides applied every year against ***,are reported to be unsafe for environment,humans,and beneficial ***,several species of Myzus have been found to develop resistance due to over application of these ***,it is required to find some novel insecticide that would be safe for the environment as well as for *** the current study,two major pure constituentsα-pinene andβ-caryophyllene were evaluated for their insecticidal potential against *** using a fumigant toxicity ***,impact ofα-pinene andβ-caryophyllene on expression of five different genes,e.g.,HSP 60,FPPS I,OSD,TOL and ANT responsible for reproduction,dispersion,and growth of *** has also been *** perform fumigant toxicity assay,five different concentrations(3.5,4,4.5,5 and 6μL L−1)ofα-pinene andβ-caryophyllene were *** concentration(LC)was calculated,and gene expression studies were executed through qRT PCR at LC30 ofα-pinene andβ-*** constituents demonstrated excellent fumigant toxicity effects against *** at all five ***,α-pinene shows significantly better results(98%)as compared toβ-caryophyllene(80%)after 72 h at 6μL L−1 of *** highest upregulation in expression was demonstrated at LC30 dose ofα-pinene in five in three out of five genes understudy(TOL,ANT,and FPPS I).Conversely,two genes HSP 60 and OSD demonstrated downregulation at LC30 dose ofβ-***,our results highlighted the promising insecticidal potential of both compoundsα-pinene andβ-caryophylleneby interfering with the reproduction and development related processes in ***,allowing us to recommend the phytoconstituents under investigation as an ecofriendly alternative to synthetic insecticides.

关键词： Fumigation M.persicae gene expression real time PCR α-pinene β-caryophyllene

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