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59 results about "Nuclear localization sequence" patented technology

A nuclear localization signal or sequence (NLS) is an amino acid sequence that 'tags' a protein for import into the cell nucleus by nuclear transport. Typically, this signal consists of one or more short sequences of positively charged lysines or arginines exposed on the protein surface. Different nuclear localized proteins may share the same NLS. An NLS has the opposite function of a nuclear export signal (NES), which targets proteins out of the nucleus.

Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery and methods of using same

ActiveUS20140079774A1Promoting death of cancer cellEfficient packagingBiocideSpecial deliveryLipid formationBinding peptide
The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g. siRNA or a protein toxin such as ricin toxin A-chain or diphtheria toxin A-chain) and / or a histone-packaged plasmid DNA disposed within the nanoporous silica core (preferably supercoiled in order to more efficiently package the DNA into protocells) which is optionally modified with a nuclear localization sequence to assist in localizing protocells within the nucleus of the cancer cell and the ability to express peptides involved in therapy (apoptosis / cell death) of the cancer cell or as a reporter, a targeting peptide which targets cancer cells in tissue to be treated such that binding of the protocell to the targeted cells is specific and enhanced and a fusogenic peptide that promotes endosomal escape of protocells and encapsulated DNA. Protocells according to the present invention may be used to treat cancer, especially including hepatocellular (liver) cancer using novel binding peptides (c-MET peptides) which selectively bind to hepatocellular tissue or to function in diagnosis of cancer, including cancer treatment and drug discovery.
Owner:NAT TECH & ENG SOLUTIONS OF SANDIA LLC +1

Nanoparticle delivery vehicle

A nanoparticle delivery vehicle, comprising a nanoparticle, an active agent and a nuclear localization signal and methods of modulating gene expression and protein expression employing the nanoparticle delivery vehicle. A representative method includes providing a nanoparticle delivery vehicle comprising a nanoparticle having a diameter of about 30 nm or less, an active agent and a nuclear localization signal; and contacting a target cell with the nanoparticle delivery vehicle, whereby an active agent is delivered to the nucleus of a target cell. Another representative method includes providing a nanoparticle delivery vehicle comprising a nanoparticle having a diameter greater than or equal to about 30 nm, an active agent and a nuclear localization signal; and contacting a target cell with the nanoparticle delivery vehicle, whereby an active agent is delivered to the cytoplasm of a cell.
Owner:NORTH CAROLINA STATE UNIV

Biodegradable cross-linked cationic multi-block copolymers for gene delivery and methods of making thereof

A biodegradable cross-linked cationic multi-block copolymer of linear polyethylenimine (LPEI) wherein the LPEI blocks are linked together by hydrophilic linkers with a biodegradable disulfide bond and methods of making thereof. The biodegradable cross-linked cationic multi-block copolymer may also contain pendant functional moieties which are preferably receptor ligands, membrane permeating agents, endosomolytic agents, nuclear localization sequences, pH sensitive endosomolytic peptides, chromogenic or fluorescent dyes.
Owner:CLSN LAB

Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery including transdermal delivery of cargo and methods thereof

The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g. siRNA or a protein toxin such as ricin toxin A-chain or diphtheria toxin A-chain) and / or a histone-packaged plasmid DNA disposed within the nanoporous silica core (preferably supercoiled in order to more efficiently package the DNA into protocells) which is optionally modified with a nuclear localization sequence to assist in localizing protocells within the nucleus of the cancer cell and the ability to express peptides involved in therapy (apoptosis / cell death) of the cancer cell or as a reporter, a targeting peptide which targets cancer cells in tissue to be treated such that binding of the protocell to the targeted cells is specific and enhanced and a fusogenic peptide that promotes endosomal escape of protocells and encapsulated DNA. Protocells according to the present invention may be used to treat cancer, especially including hepatocellular (liver) cancer using novel binding peptides (c-MET peptides) which selectively bind to hepatocellular tissue or to function in diagnosis of cancer, including cancer treatment and drug discovery.
Owner:STC UNM +1

Genetic assay for protein nuclear transport

InactiveUS6902886B1Decreasing reporter gene expression levelFunction increaseSugar derivativesMicroorganismsProtein insertionNuclear transport
The invention provides methods of determining the presence of a nuclear localization signal and / or the presence of a nuclear export signal in a protein of interest. The invention further provides chimeric nucleic acids and recombinant host cells for use in such methods. Additionally provided is a nucleic acid molecule encoding a modified LexA protein, wherein the modified LexA protein has no nuclear localization signal, as well as the modified LexA protein itself. In the nuclear import assay, if a protein of interest fused to a mLexA-Gal4AD hybrid contains a functional NLS, the fusion product will enter the yeast cell nucleus and activate the expression of reporter genes. In the nuclear export assay, if a protein of interest fused to a mLexA-SV40 NLS-Gal4AD hybrid contains a functional NES, the fusion product localized to the cell nucleus will exit into the cytoplasm, decreasing the reporter gene expression levels.
Owner:THE RES FOUND OF STATE UNIV OF NEW YORK

Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery including transdermal delivery of cargo and methods thereof

The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g. siRNA or a protein toxin such as ricin toxin A-chain or diphtheria toxin A-chain) and / or a histone-packaged plasmid DNA disposed within the nanoporous silica core (preferably supercoiled in order to more efficiently package the DNA into protocells) which is optionally modified with a nuclear localization sequence to assist in localizing protocells within the nucleus of the cancer cell and the ability to express peptides involved in therapy (apoptosis / cell death) of the cancer cell or as a reporter, a targeting peptide which targets cancer cells in tissue to be treated such that binding of the protocell to the targeted cells is specific and enhanced and a fusogenic peptide that promotes endosomal escape of protocells and encapsulated DNA. Protocells according to the present invention may be used to treat cancer, especially including hepatocellular (liver) cancer using novel binding peptides (c-MET peptides) which selectively bind to hepatocellular tissue or to function in diagnosis of cancer, including cancer treatment and drug discovery.
Owner:STC UNM +1

Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery and methods of using same

The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g. siRNA or a protein toxin such as ricin toxin A-chain or diphtheria toxin A-chain) and / or a histone-packaged plasmid DNA disposed within the nanoporous silica core (preferably supercoiled in order to more efficiently package the DNA into protocells) which is optionally modified with a nuclear localization sequence to assist in localizing protocells within the nucleus of the cancer cell and the ability to express peptides involved in therapy (apoptosis / cell death) of the cancer cell or as a reporter, a targeting peptide which targets cancer cells in tissue to be treated such that binding of the protocell to the targeted cells is specific and enhanced and a fusogenic peptide that promotes endosomal escape of protocells and encapsulated DNA. Protocells according to the present invention may be used to treat cancer, especially including hepatocellular (liver) cancer using novel binding peptides (c-MET peptides) which selectively bind to hepatocellular tissue or to function in diagnosis of cancer, including cancer treatment and drug discovery.
Owner:NAT TECH & ENG SOLUTIONS OF SANDIA LLC +1

Regulation of receptor expression through delivery of artificial transcription factors

The invention relates to an artificial transcription factor comprising a polydactyl zinc finger protein targeting specifically a receptor gene promoter fused to an inhibitory or activatory protein domain, a nuclear localization sequence, and a protein transduction domain. In particular examples these receptor gene promoters regulate the expression of the endothelin receptor A, the endothelin receptor B, the Toll-like receptor 4 or the high-affinity IgE receptor. Artificial transcription factors directed to the endothelin A or B receptors are useful in the treatment of diseases modulated by endothelin, such as cardiovascular diseases, and, in particular, eye diseases, e.g. retinal vein occlusion, retinal artery occlusion, macular edema, optic neuropathy, central serous chorioretinopathy, retinitis pigmentosa, Leber's hereditary optic neuropathy, and the like. Artificial transcription factors directed to the Toll-like receptor 4 or the IgE receptor are useful for the treatment of autoimmune disorders, and the like, and allergic disorders, respectively.
Owner:ALIOPHTHA

Vector for mediating high-efficiency expression of exogenous gene in cells of mammal and use thereof

The invention discloses a combined vector for mediating the high-efficiency expression of an exogenous gene in cells of a mammal, which comprises an exogenous gene high-efficiency expression vector pATEW and an artificial transcription factor pcDNA3.1(+) / Hy / GVP4. The exogenous gene high-efficiency expression vector pATEW combines gene expression regulatory elements including a human beta-globin MAR sequence, a hEF-1a genetic transcription regulatory sequence, an after-transcription regulatory element WPRE and the like and an artificial transcription factor combined site sequence. The artificial transcription factor expression vector (pcDNA3.1(+) / Hy / GVP4 is an artificial transcription factor GVP4 which is formed by connecting two parts: four tandem repeats of 12 peptides (DALDDFDLDMLG) in VP16, which serves as the functional structural region of the artificial transcription factor; and the nuclear localization sequence of SV40. By co-transfecting cells of the mammal with the pATEW carrying the exogenous gene and the pcDNA3.1(+) / Hy / GVP4, the high-efficiency expression of the exogenous gene in the cells of the mammal can be realized.
Owner:INST OF BIOENG ACAD OF MILITARY MEDICAL SCI OF THE CHINESE

Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery including transdermal delivery of cargo and methods thereof

InactiveUS20170232115A1Amenable to high capacity loadingPorosity adjustableOrganic active ingredientsPowder deliveryCancer cellApoptosis
The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g. siRNA or a protein toxin such as ricin toxin A-chain or diphtheria toxin A-chain) and / or a histone-packaged plasmid DNA disposed within the nanoporous silica core (preferably supercoiled in order to more efficiently package the DNA into protocells) which is optionally modified with a nuclear localization sequence to assist in localizing protocells within the nucleus of the cancer cell and the ability to express peptides involved in therapy (apoptosis / cell death) of the cancer cell or as a reporter, a targeting peptide which targets cancer cells in tissue to be treated such that binding of the protocell to the targeted cells is specific and enhanced and a fusogenic peptide that promotes endosomal escape of protocells and encapsulated DNA. Protocells according to the present invention may be used to treat cancer, especially including hepatocellular (liver) cancer using novel binding peptides (c-MET peptides) which selectively bind to hepatocellular tissue or to function in diagnosis of cancer, including cancer treatment and drug discovery.
Owner:STC UNM +1

PiggyBac transformation system

The present invention is directed to a transformation system for making transgenic organisms that includes a vector containing a modified piggyBac transposon into which is inserted an enhanced green fluorescent protein gene linked to a polyubiquitin promoter sequence and a nuclear localizing sequence; and a helper transposase vector that includes an hsp70 promoter sequence upstream of the putative piggyBac promoter that increases the transformation frequency of this system.
Owner:UNITED STATES OF AMERICA AS REPRESENTED BY THE SEC OF AGRI THE

Compounds and methods of use to treat infectious diseases

The present invention concerns alkyl aryl carbonyl compounds that possess anti-infective activity. The compounds of the invention can be used to target specific nuclear localization signal, thereby blocking importation of specific proteins or molecular complex into the nucleus of a cell. The invention encompasses methods of use of such compounds for treatment or prevention of infectious diseases, such as parasitic and viral diseases, including, for example, malaria and acquired immunodeficiency syndrome. The use of the compounds to detect certain specific protein structures which are present in nuclear localization sequences is also taught.
Owner:FERRING BV

Antibacterial polypeptide conjugate with multiple target points and synthesis method and application of biopolymer of antibacterial polypeptide conjugate

The invention provides an antibacterial polypeptide conjugate Acr3-NLS (nuclear localization sequence) as well as a bipolymer (Acr3-NLS)2 of the antibacterial polypeptide conjugate, and belongs to the field of medicinal chemistry. The antibacterial polypeptide conjugate Acr3-NLS is formed by connecting acridine molecules to an N end of NLS, and the biopolymer (Acr3-NLS)2 is formed by connecting Acr3-NLS molecules by virtue of a disulfide bond. The activity test shows that the antibacterial activity of the antibacterial polypeptide conjugate Acr3-NLS and (Acr3-NLS)2 is remarkably improved compared with that of the NLS, and the bacteria can be killed by virtue of the action mechanism of multiple target points. The action mechanism of the multiple target points can enable the Acr3-NLS and (Acr3-NLS)2 to kill the traditional antibiotics drug-fastness bacteria; moreover, the bacteria is unlikely to have drug fastness. The Acr3-NLS and (Acr3-NLS)2 as an active ingredient have a potential application value in preparing the antibacterial drugs.
Owner:LANZHOU UNIVERSITY

Non-viral gene vector constructed on basis of N-terminal octadecane acylated antibacterial peptide

The invention discloses a non-viral gene vector constructed on the basis of N-terminal octadecane acylated antibacterial peptide. The vector utilizes the characteristics of melittin, i.e. endosome-destroying activity and membrane penetrating activity, moreover, a nuclear localization sequence and a polyarginine sequence are added into the melittin sequence, and then a series of forward and reverse analogues are synthesized, and octadecanoic acid is connected with the N terminals of the obtained analogues, so that the analogues and plasmid DNA (deoxyribonucleic acid) form stable nano-particles. An experiment result shows that because the non-viral gene vector constructed on the basis of N-terminal octadecane acylated antibacterial peptide has higher transfection efficiency and lower cytotoxicity and the polypeptide vector is easy to biodegrade, the non-viral gene vector is more suitable for application in vivo.
Owner:LANZHOU UNIVERSITY

Non-viral vector

The present invention provides a non-viral vector which comprises a sequence encoding an RNA replicase and a nuclear localisation sequence. The vector may also comprise a nucleotide sequence of interest (NOI). The vector may be used to deliver an NOI to a target cell.
Owner:UNIV COLLEGE CORK NAT UNIV OF IRELAND CORK

Saccharomyces cerevisiae engineering bacteria with low-yielding ethyl carbamate, and building method and application of saccharomyces cerevisiae engineering bacteria

The invention discloses saccharomyces cerevisiae engineering bacteria with low-yielding ethyl carbamate. A regulatory factor G1n3p in saccharomyces cerevisiae is transformed through engineering bacteria. The concrete strategy is that a phosphorylation site on a G1n3p nuclear localization sequence is subjected to mutation to form three phosphorylation sites on the G1n3p nuclear localization sequence; the three phosphorylation sites respectively are the 344th, 347th and 355th serine. In order to obtain a better technical effect, a nuclear localization regulatory region of combining G1n3p with an upstream regulatory factor can be further removed; the G1n3p of a regulatory sequence at the tail end of C is removed by truncated expression, wherein an expression sequence is 1-653. The EC yield of the engineering bacteria disclosed by the invention is reduced by 62% by detection of a yellow rice wine simulation system. In addition, the content of main ingredients is not significantly changed, and the fermentation characteristics and the growth characteristics of a bacterial strain are not affected after the content of other ingredients in a fermentation liquor after fermentation is detected.
Owner:JIANGNAN UNIV

Artificial transcription factors for the treatment of diseases caused by opa1 haploinsufficiency

The invention relates to an artificial transcription factor comprising a polydactyl zinc finger protein targeting specifically the OPA1 promoter fused to an activatory protein domain, and a nuclear localization sequence. Artificial transcription factors directed against the OPA1 promoter are useful for the treatment of diseases associated with OPA1 haploinsufficiency, such as autosomal dominant optic atrophy, syndromic autosomal dominant optic atrophy plus and normal tension glaucoma.
Owner:ALIOPHTHA

Method with function of reducing accumulation of ethyl carbamate in rice wine fermentation

The invention belongs to the field of microbial genetics and molecular biology and discloses a method with a function of reducing accumulation of ethyl carbamate in rice wine fermentation. Genetically engineered bacteria modified by nitrogen catabolite repression regulation factors are adopted for rice wine fermentation, and engineered saccharomyces cerevisiae eliminates nuclear localization regulatory sequences of the regulation factors Gln3p and Gat1p and mutates phosphorylation sites of the nuclear localization sequences. In a simulated rice wine fermentation system, compared with rice wine with wild strains for fermentation, rice wine fermented with the genetically engineered bacteria has the advantages that contents of carbamide and ethyl carbamate in the rice wine are decreased by 63% and 72% respectively, the content of the ethyl carbamate in the rice wine is decreased to about 55.53 microgram / L, and contents of major nutrient substances and characteristic flavor substances are less in difference. Therefore, the method has a huge potential of application to rice wine production.
Owner:JIANGNAN UNIV

Chlamydomonas exogenous gene expression system based on blue light induction and application thereof

The invention discloses a chlamydomonas exogenous gene expression system based on blue light induction and an application thereof. Expression system elements include a light receptor cryptochrome CRY2 gene and an interacting protein CIB1 gene, a GAL4 DNA binding structural domain BD and an activation domain VP64 having transcriptional activation of an active herpes simplex virus, a nuclear localization sequence NLS, a UAS sequence which can be combined with the GAL4 transcription factor DNA binding structural domain BD, and an exogenous gene, wherein CRY2-BD, CIB1-VP64-NLS and a UAS-exogenous gene are connected together and are integrated into a nuclear genome of chlamydomonas through genetic transformation. Single color light-blue light is used as an inducing factor for inducing the expression of the exogenous gene, and the damage of algae cells caused by heat shock induction is overcome, and the influence of various chemical inducers on the metabolism of the algae cells is overcome.
Owner:SHENZHEN UNIV

Functionalized peptide transporters for cellular uptake

Disclosed are novel cell-penetrating transporters for enhancing cellular uptake of peptide fusion proteins into live cells. The cell-penetrating transporters comprise a functionalized peptide construct comprising a cell importation peptide covalently bound to a cargo, the cell importation peptide in an unreactive monomeric form, and a pharmaceutical carrier. In certain embodiments, the cargo further comprises a nuclear localization sequence (NLS) allowing the cargo to be transported across the nuclear membrane.
Owner:GENERAL ELECTRIC CO

Tonoplast localization sequence and its application

The invention relates to a tonoplast localization sequence and its application. The inventor, for the first time, separates a segment of signal sequence for specific location of cell tonoplast, i.e. a tonoplast targeting sequence (TTS). The sequence can lead accurate and efficient location of protein on intracellular tonoplast. The sequence can be utilized to perform localization transformation on target protein, and expression of the target protein at other sites other than the tonoplast can be reduced or prevented.
Owner:SHANGHAI INST OF BIOLOGICAL SCI CHINESE ACAD OF SCI

Porcine circovirus type 2 Cap gene modified recombinant antigen and application thereof

The invention discloses a porcine circovirus type 2 Cap gene modified recombinant antigen and an application thereof, and belongs to the field of veterinary vaccine researches. The modified recombinant antigen is obtained by modification and construction of a Cap gene after a nuclear localization sequence of a porcine circovirus type 2 LG strain widely prevalent in swinery in China at present is deleted. A vaccine prepared from the modified recombinant antigen can stimulate organisms to produce high-level neutralizing antibodies, is superior to commercially available inactivated influenza virus vaccines and separate Cap protein immunization groups after nuclear localization sequences are deleted, has a highest antibody level, is safe and harmless to immunized animals after inoculation, has the advantages of low price, safety, stability, high yield and easiness in preservation and application, and has great significance to related diseases caused by porcine circovirus type 2 infection in China, so that the porcine circovirus type 2 Cap gene modified recombinant antigen has a good application prospect.
Owner:SOUTH CHINA AGRI UNIV

Artificial transcription factors for the treatment of diseases caused by opa1 haploinsufficiency

The invention relates to an artificial transcription factor comprising a polydactyl zinc finger protein targeting specifically the OPA1 promoter fused to an activatory protein domain, and a nuclear localization sequence. Artificial transcription factors directed against the OPA1 promoter are useful for the treatment of diseases associated with OPA1 haploinsufficiency, such as autosomal dominant optic atrophy, syndromic autosomal dominant optic atrophy plus and normal tension glaucoma.
Owner:ALIOPHTHA
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