Patents by Inventor Xiangtao Liu
Xiangtao Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11952401Abstract: The present disclosure belongs to the technical field of biological products for veterinary medicine, and specifically relates to a recombinant foot-and-mouth disease virus (FMDV) with a reduced immunosuppressive activity, a preparation method and use thereof, and a recombinant vaccine strain. According to the present disclosure, it is firstly discovered that FMDV 3B protein has an immunosuppressive function, and key sites for exerting the immunosuppressive function are found. A recombinant FMDV vaccine strain with a lost immunosuppressive function in FMDV 3B protein is constructed by introducing amino acid mutations into three repeated copies of FMDV 3B protein.Type: GrantFiled: July 14, 2021Date of Patent: April 9, 2024Assignee: Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural SciencesInventors: Haixue Zheng, Fan Yang, Zixiang Zhu, Xiangle Zhang, Weijun Cao, Congcong Wang, Kangli Li, Huisheng Liu, Hong Tian, Keshan Zhang, Xiangtao Liu
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Patent number: 11883411Abstract: The present disclosure belongs to the technical field of African swine fever (ASF) treatment, in particular to use of a compound aprepitant in prevention or treatment of the ASF. In the present disclosure, it is found that the compound aprepitant can significantly inhibit replication of an African swine fever virus (ASFV); in addition, it is found that the aprepitant inhibits transcription and protein expression of D1133L, and reduces transcription and protein expression levels of p30 and p72, preventing virus invasion on host cells. Therefore, the compound aprepitant can be used to inhibit early and late infection of the ASFV. Accordingly, the compound aprepitant can be used to prevent or treat the ASF.Type: GrantFiled: August 25, 2022Date of Patent: January 30, 2024Assignee: LANZHOU VETERINARY RESEARCH INSTITUTE, CHINESE ACADEMY OF AGRICULTURAL SCIENCESInventors: Keshan Zhang, Haixue Zheng, Huimei Cui, Bo Yang, Hong Tian, Zixiang Zhu, Tao Feng, Fan Yang, Weijun Cao, Xusheng Ma, Yi Ru, Jianhong Guo, Xiangtao Liu
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Patent number: 11883482Abstract: The disclosure provides a recombinant nucleic acid of Seneca valley virus, a recombinant vaccine strain and preparation method and use thereof, and relates to the technical field of genetic engineering. The disclosure provides the recombinant nucleic acid of Seneca valley virus, recombinant Seneca valley virus comprising the recombinant nucleic acid, recombinant Seneca valley virus encoded by the recombinant nucleic acid, recombinant Seneca valley virus vaccine strain comprising the recombinant Seneca valley virus and preparation method and use thereof. According to the disclosure, a vaccine strain characterized by high antigen production capacity, remarkably reduced pathogenicity (even having no pathogenicity to pigs), strong antibody induction activity, high immune protection rate is prepared. The vaccine strain remarkably improves the biological safety and can be used for preventing and controlling Seneca valley virus in China and the neighboring countries.Type: GrantFiled: May 24, 2021Date of Patent: January 30, 2024Inventors: Haixue Zheng, Fan Yang, Zixiang Zhu, Weijun Cao, Hong Tian, Keshan Zhang, Ting Wei, Min Zheng, Wei Zhang, Wen Dang, Xusheng Ma, Dan Li, Yi Ru, Jijun He, Jianhong Guo, Xiangtao Liu
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Publication number: 20230295641Abstract: The present disclosure belongs to the technical field of biology, and in particular relates to an attenuated strain of African swine fever virus (ASFV) with IPTG-induced deletion of a D1133L gene and use thereof. In the present disclosure, it is firstly found that the D1133L protein of ASFV can inhibit production of IFN-? and downstream cytokines ISG-15 and ISG-56, and can be used as an immunosuppressant with a relatively strong immunosuppressive effect. In addition, the attenuated strain of ASFV with IPTG-induced deletion of the D1133L gene is constructed. Specifically, a screening expression cassette is inserted into a position before the non-structural protein gene D1133L of the ASFV using an Escherichia coli lac operator-repressor system, to obtain a recombinant virus. In the presence of the IPTG, the recombinant virus has similar characteristics to a wild-type virus; and in the absence of the IPTG, the expression of the D1133L protein is inhibited.Type: ApplicationFiled: November 21, 2022Publication date: September 21, 2023Applicant: LANZHOU VETERINARY RESEARCH INSTITUTE, CHINESE ACADEMY OF AGRICULTURAL SCIENCESInventors: Haixue ZHENG, Keshan ZHANG, Ting ZHANG, Tao FENG, Bo YANG, Xing YANG, Xijuan SHI, Hong TIAN, Yi RU, Fan YANG, Zixiang ZHU, Jianhong GUO, Jijun HE, Xiangtao LIU
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Publication number: 20230270747Abstract: The present disclosure belongs to the technical field of African swine fever (ASF) treatment, in particular to use of a compound aprepitant in prevention or treatment of the ASF. In the present disclosure, it is found that the compound aprepitant can significantly inhibit replication of an African swine fever virus (ASFV); in addition, it is found that the aprepitant inhibits transcription and protein expression of D1133L, and reduces transcription and protein expression levels of p30 and p72, preventing virus invasion on host cells. Therefore, the compound aprepitant can be used to inhibit early and late infection of the ASFV. Accordingly, the compound aprepitant can be used to prevent or treat the ASF.Type: ApplicationFiled: August 25, 2022Publication date: August 31, 2023Applicant: LANZHOU VETERINARY RESEARCH INSTITUTE, CHINESE ACADEMY OF AGRICULTURAL SCIENCESInventors: Keshan ZHANG, Haixue ZHENG, Huimei CUI, Bo YANG, Hong TIAN, Zixiang ZHU, Tao FENG, Fan YANG, Weijun CAO, Xusheng MA, Yi RU, Jianhong GUO, Xiangtao LIU
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Publication number: 20220031832Abstract: The disclosure provides a recombinant nucleic acid of Seneca valley virus, a recombinant vaccine strain and preparation method and use thereof, and relates to the technical field of genetic engineering. The disclosure provides the recombinant nucleic acid of Seneca valley virus, recombinant Seneca valley virus comprising the recombinant nucleic acid, recombinant Seneca valley virus encoded by the recombinant nucleic acid, recombinant Seneca valley virus vaccine strain comprising the recombinant Seneca valley virus and preparation method and use thereof. According to the disclosure, a vaccine strain characterized by high antigen production capacity, remarkably reduced pathogenicity (even having no pathogenicity to pigs), strong antibody induction activity, high immune protection rate is prepared. The vaccine strain remarkably improves the biological safety and can be used for preventing and controlling Seneca valley virus in China and the neighboring countries.Type: ApplicationFiled: May 24, 2021Publication date: February 3, 2022Applicant: Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural SciencesInventors: Haixue Zheng, Fan Yang, Zixiang Zhu, Weijun Cao, Hong Tian, Keshan Zhang, Ting Wei, Min Zheng, Wei Zhang, Wen Dang, Xusheng Ma, Dan Li, Yi Ru, Jijun He, Jianhong Guo, Xiangtao Liu
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Publication number: 20220017576Abstract: The present disclosure belongs to the technical field of biological products for veterinary medicine, and specifically relates to a recombinant foot-and-mouth disease virus (FMDV) with a reduced immunosuppressive activity, a preparation method and use thereof, and a recombinant vaccine strain. According to the present disclosure, it is firstly discovered that FMDV 3B protein has an immunosuppressive function, and key sites for exerting the immunosuppressive function are found. A recombinant FMDV vaccine strain with a lost immunosuppressive function in FMDV 3B protein is constructed by introducing amino acid mutations into three repeated copies of FMDV 3B protein.Type: ApplicationFiled: July 14, 2021Publication date: January 20, 2022Inventors: Haixue ZHENG, Fan YANG, Zixiang ZHU, Xiangle ZHANG, Weijun CAO, Congcong WANG, Kangli LI, Huisheng LIU, Hong TIAN, Keshan ZHANG, Xiangtao LIU
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Publication number: 20210016272Abstract: A test strip for detecting a serotype O foot-and-mouth disease, the test strip including: a bottom board; a detection layer being disposed on the bottom board and including a detection line and a control line; an absorbent layer being disposed at one end of the detection layer close to the control line; a gold colloidal conjugate pad being disposed at the other side of the detection layer close to the detection line; and a sample pad is disposed on a top of the gold colloidal conjugate pad. The gold colloidal conjugate pad is coated with colloidal gold particles that are conjugated with a Staphylococcus protein A (SPA) marker. The detection line is coated or impregnated with serotype O FMDV-like particles, and the control line is coated or impregnated with rabbit IgG.Type: ApplicationFiled: September 30, 2020Publication date: January 21, 2021Inventors: Shiqi SUN, Huichen GUO, Yun ZHANG, Yanyan CHANG, Yanquan WEI, Jiaxi RU, Xiaoying ZHI, Ping DU, Xiangtao LIU, Hong YIN, Jianxun LUO
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Patent number: 10894081Abstract: The present disclosure relates to a foot-and-mouth disease virus vaccine composition, especially a recombinant bivalent vaccine composition against type O and type A foot-and-mouth disease viruses. The present disclosure further relates to a method for preparing the foot-and-mouth disease virus vaccine composition, and a use of the foot-and-mouth disease virus vaccine composition in preparing medicines for preventing and/or controlling foot-and-mouth disease in animals.Type: GrantFiled: March 23, 2018Date of Patent: January 19, 2021Assignee: LANZHOU VETERINARY RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCESInventors: Haixue Zheng, Fan Yang, Zixiang Zhu, Weijun Cao, Hong Tian, Keshan Zhang, Dan Li, Ye Jin, Jianhong Guo, Jijun He, Xuepeng Cai, Xiangtao Liu
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Patent number: 10829741Abstract: A method for preparing serotype O foot-and-mouth disease virus-like particles, the method including: construction of small ubiquitin-like modifier fusion expression vector, construction of recombinant expression vectors, construction of recombinant co-expression vector, expression and purification of proteins, and in-vitro assembly of serotype O foot-and-mouth disease virus-like particles. The disclosure also provides a test strip for detecting serotype O foot-and-mouth disease including a bottom board, and a detection layer disposed on the top of the bottom board. A detection line and a control line are disposed on the detection layer. An absorbent layer is disposed at one end of the detection layer close to the control line, and an immuno-gold pad is disposed at the other side of the detection layer close to the detection line. A sample pad is disposed on the top of the immuno-gold pad.Type: GrantFiled: May 31, 2018Date of Patent: November 10, 2020Assignee: LANZHOU VETERINARY RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCESInventors: Shiqi Sun, Huichen Guo, Yun Zhang, Yanyan Chang, Yanquan Wei, Jiaxi Ru, Xiaoying Zhi, Ping Du, Xiangtao Liu, Hong Yin, Jianxun Luo
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Publication number: 20200237897Abstract: The present disclosure relates to a foot-and-mouth disease virus vaccine composition, especially a recombinant bivalent vaccine composition against type O and type A foot-and-mouth disease viruses. The present disclosure further relates to a method for preparing the foot-and-mouth disease virus vaccine composition, and a use of the foot-and-mouth disease virus vaccine composition in preparing medicines for preventing and/or controlling foot-and-mouth disease in animals.Type: ApplicationFiled: March 23, 2018Publication date: July 30, 2020Inventors: Haixue ZHENG, Fan YANG, Zixiang ZHU, Weijun CAO, Hong TIAN, Keshan ZHANG, Dan LI, Ye JIN, Jianhong GUO, Jijun HE, Xuepeng CAI, Xiangtao LIU
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Patent number: 10532092Abstract: Foot-and-mouth disease virus like particles, the particles including a structural protein VP0, a structural protein VP1 including a mineralization peptide, a structural protein VP3, and a calcium phosphate coat. The structural protein VP1 including a mineralization peptide is encoded by a gene sequence represented by SEQ ID NO. 7, SEQ ID NO. 8 or SEQ ID NO. 9. The structural protein VP0 is encoded by a gene sequence represented by SEQ ID NO. 2. The structural protein VP3 is encoded by a gene sequence represented by SEQ ID NO. 3. The calcium phosphate coat covers the structural protein VP0, the structural protein VP1 including a mineralization peptide, and the structural protein VP3.Type: GrantFiled: July 4, 2018Date of Patent: January 14, 2020Assignees: LANZHOU VETERINARY RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES, ZHEJIANG UNIVERSITYInventors: Huichen Guo, Shiqi Sun, Ping Du, Zhidong Teng, Ruikang Tang, Ruibo Zhao, Jiaxi Ru, Yanquan Wei, Yun Zhang, Yuan Gao, Junwu Ma, Xiangtao Liu, Hong Yin
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Publication number: 20190367885Abstract: A method for preparing serotype O foot-and-mouth disease virus-like particles, the method including: construction of small ubiquitin-like modifier fusion expression vector, construction of recombinant expression vectors, construction of recombinant co-expression vector, expression and purification of proteins, and in-vitro assembly of serotype O foot-and-mouth disease virus-like particles. The disclosure also provides a test strip for detecting serotype O foot-and-mouth disease including a bottom board, and a detection layer disposed on the top of the bottom board. A detection line and a control line are disposed on the detection layer. An absorbent layer is disposed at one end of the detection layer close to the control line, and an immuno-gold pad is disposed at the other side of the detection layer close to the detection line. A sample pad is disposed on the top of the immuno-gold pad.Type: ApplicationFiled: May 31, 2018Publication date: December 5, 2019Inventors: Shiqi SUN, Huichen GUO, Yun ZHANG, Yanyan CHANG, Yanquan WEI, Jiaxi RU, Xiaoying ZHI, Ping DU, Xiangtao LIU, Hong YIN, Jianxun LUO
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Publication number: 20190008944Abstract: Foot-and-mouth disease virus like particles, the particles including a structural protein VP0, a structural protein VP1 including a mineralization peptide, a structural protein VP3, and a calcium phosphate coat. The structural protein VP1 including a mineralization peptide is encoded by a gene sequence represented by SEQ ID NO. 7, SEQ ID NO. 8 or SEQ ID NO. 9. The structural protein VP0 is encoded by a gene sequence represented by SEQ ID NO. 2. The structural protein VP3 is encoded by a gene sequence represented by SEQ ID NO. 3. The calcium phosphate coat covers the structural protein VP0, the structural protein VP1 including a mineralization peptide, and the structural protein VP3.Type: ApplicationFiled: July 4, 2018Publication date: January 10, 2019Inventors: Huichen GUO, Shiqi SUN, Ping DU, Zhidong TENG, Ruikang TANG, Ruibo ZHAO, Jiaxi RU, Yanquan WEI, Yun ZHANG, Yuan GAO, Junwu MA, Xiangtao LIU, Hong YIN
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Patent number: 9891816Abstract: A method and a mobile terminal for processing touch input are provided. The mobile terminal has a rectangular touch screen with long sides and short sides. The mobile terminal having two state: a first state in which only the short sides are parallel with a horizontal surface and a second state in which only the long sides are parallel with the horizontal surface. The method comprises the following steps of: obtaining from the touch screen a gesture in a first direction as input by a touch object on the touch screen when the mobile terminal is in the first state; triggering a first touch command in response to the gesture in the first direction; obtaining from the touch screen a gesture in a second direction as input by the touch object on the touch screen when the mobile terminal is in the second state, the second direction being the same as the first direction; and triggering the first touch command in response to the gesture in the second direction.Type: GrantFiled: November 2, 2015Date of Patent: February 13, 2018Assignees: LENOVO (BEIJING) LIMITED, BEIJING LENOVO SOFTWARE, LTD.Inventors: Dayong Gan, Lei Lv, Xiangtao Liu
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Patent number: 9715536Abstract: A virtualization method for large-scale distributed heterogeneous data includes using a three-layer structure and a two-level mapping. According to different abstraction degrees, a data model is defined as three layers from low to high: a physical layer, a virtual table layer, and a virtual view layer. Each layer has a proprietary data model. The two-level mapping comprises a PV mapping and a VV mapping, which is a transformation mechanism of the data models of different layers. As a result, the virtualization method virtualizes decentralized heterogeneous data, and is applicable to data interoperability treatments.Type: GrantFiled: February 10, 2014Date of Patent: July 25, 2017Assignee: GUANGDONG ELECTRONICS INDUSTRY INSTITUTE LTD.Inventors: Xiangtao Liu, Yi Xie, Qiang Yue, Tongkai Ji
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Patent number: 9689186Abstract: A hinge and an electronic device are provided according to the present application. The hinge includes a spindle, a spindle sleeve arranged with respect to the spindle, and a first material with a variable state arranged between the spindle and the spindle sleeve, and a torsion of the spindle is variable according to the variable state of the first material. The electronic device includes the hinge, a first body and a second body; and the first body and the second body are rotatably connected via the hinge.Type: GrantFiled: March 27, 2015Date of Patent: June 27, 2017Assignee: Lenovo (Beijing) Co., Ltd.Inventor: Xiangtao Liu
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Publication number: 20160267155Abstract: A virtualization method for large-scale distributed heterogeneous data includes using a three-layer structure and a two-level mapping. According to different abstraction degrees, a data model is defined as three layers from low to high: a physical layer, a virtual table layer, and a virtual view layer. Each layer has a proprietary data model. The two-level mapping comprises a PV mapping and a VV mapping, which is a transformation mechanism of the data models of different layers. As a result, the virtualization method virtualizes decentralized heterogeneous data, and is applicable to data interoperability treatments.Type: ApplicationFiled: February 10, 2014Publication date: September 15, 2016Inventors: Xiangtao Liu, Yi Xie, Qiang Yue, Tongkai Ji
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Publication number: 20160123059Abstract: A hinge and an electronic device are provided according to the present application. The hinge includes a spindle, a spindle sleeve arranged with respect to the spindle, and a first material with a variable state arranged between the spindle and the spindle sleeve, and a torsion of the spindle is variable according to the variable state of the first material. The electronic device includes the hinge, a first body and a second body; and the first body and the second body are rotatably connected via the hinge.Type: ApplicationFiled: March 27, 2015Publication date: May 5, 2016Applicant: Lenovo (Beijing) Co., Ltd.Inventor: Xiangtao Liu
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Patent number: 9310918Abstract: The present disclosure provides a display module, an electronic device and a control method thereof. The display module may comprise: a covering unit satisfying a first light transmittance, comprising a touch area; a sensing unit satisfying a second light transmittance, comprising a sensing layer, wherein the covering unit is arranged on a first side of the sensing layer, and the sensing layer is configured to sense a touch position of an operator in the touch area when the operator touches the touch area; a reflective type display unit, comprising a display layer and a reflective surface, wherein the display unit is arranged on a second side of the sensing layer, and the display layer and the reflective surface are respectively opposite to the sensing layer.Type: GrantFiled: December 27, 2011Date of Patent: April 12, 2016Assignees: Beijing Lenovo Software Ltd., Lenovo (Beijing) LimitedInventors: Qing Xu, Xiangtao Liu