Patents by Inventor Longcheng Li

Longcheng Li 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).

  • Publication number: 20240117467
    Abstract: Provided are an electrokinetic device and method for in-situ leaching of uranium, belonging to the technical field of in-situ leaching of uranium. The electrokinetic device for in-situ leaching of uranium includes an injection well, a pumping well, a positive electrode, a negative electrode, leaching solution, and a direct current power supply. Uranium ore is provided between the injection well and the pumping well, the negative electrode is arranged in the injection well, and the positive electrode is arranged in the pumping well. The leaching solution is injected from the injection well, flows through the uranium ore, and then is pumped from the pumping well for uranium extraction. The direct current power supply is respectively connected to the positive electrode and the negative electrode, and is configured to apply direct current between the positive electrode and the negative electrode to promote the pooling of uranium-carrying ions towards the pumping well.
    Type: Application
    Filed: April 13, 2023
    Publication date: April 11, 2024
    Inventors: Chunguang LI, Longcheng LIU, Chong ZHANG, Kaixuan TAN, Zhenzhong LIU, Yongmei LI, Shuo MENG, Wenji WANG, Qi LIU, Qianjin NIU
  • Publication number: 20230287416
    Abstract: Provided herein are methods and compositions related to combinations of (a) agents that increase the expression of SMN2 gene or protein, and (b) modulators of SMN2 mRNA splicing or stability that increase the production of functional SMN2 mRNA and SMN protein, and their use in treating SMA and related conditions or diseases. In certain embodiments, the methods relate to using SMN2 saRNA and SMN2 mRNA modulators for diminishing the symptoms of SMA.
    Type: Application
    Filed: July 29, 2021
    Publication date: September 14, 2023
    Inventors: Longcheng LI, Moorim KANG, Jiancheng WU
  • Publication number: 20230220389
    Abstract: Provided is a double-stranded nucleic acid molecule, in particular to a small activating nucleic acid molecule, wherein the small activating nucleic acid molecule may be a nucleic acid molecule targeting MITF gene and at least comprises a first oligonucleotide strand. Further provided are compositions or formulations comprising the small activating nucleic acid molecule and uses thereof. The small activating nucleic acid molecule, or the composition or formulation comprising the small activating nucleic acid molecule, can be used to activate or upregulate the MITF gene expression in a cell, and treat a disease or condition related to insufficient or decreased MITF protein expression.
    Type: Application
    Filed: May 6, 2021
    Publication date: July 13, 2023
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20230212565
    Abstract: The present invention relates to a small activating nucleic acid molecules and uses thereof for treating diseases and conditions, such as thrombocytopenia, related to THPO protein deficiency or insufficiency. As described herein, small activating nucleic acid molecules can be double-stranded or single-stranded RNA molecules targeting the promoter region of the Thpo/THPO gene through an RNA activation mechanism and comprise a first nucleic acid strand and a second nucleic acid strand. The double-stranded RNA molecule targeting the promoter region of the Thpo/THPO gene comprises two nucleic acid strands of 16 to 35 nucleotides in length, wherein one nucleic acid strand has at least 75% homology or complementarity to a target selected from the promoter region of the Thpo/THPO gene.
    Type: Application
    Filed: September 18, 2020
    Publication date: July 6, 2023
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20220313721
    Abstract: The present invention relates to oligomeric nucleic acid molecules and uses thereof for treating hearing loss. The present invention relates to small activating nucleic acid molecules for treating hearing loss. The small activating nucleic acid molecules of the present invention can be double-stranded or single-stranded RNA molecules targeting the promoter region of an ATOH1 gene comprising a first nucleic acid strand and a second nucleic acid strand. The double-stranded RNA molecule targeting the promoter region of the ATOH1 gene comprises two nucleic acid strands of 16 to 35 nucleotides in length, wherein one nucleic acid strand has at least 75% homology or complementarity to a target selected from the promoter region of the ATOH1 gene.
    Type: Application
    Filed: July 3, 2020
    Publication date: October 6, 2022
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20220211739
    Abstract: The present invention relates to compositions of small activating nucleic acid molecules for increasing the expression of HMBS gene and a use thereof. The small activating nucleic acid molecule can be a double-stranded or single-stranded RNA molecule targeting the promoter region of the HMBS gene. The first nucleic acid strand and the second nucleic acid strand each contain a complementary region, and the complementary regions can form a double-stranded nucleic acid structure, which can promote the expression of the HMBS gene. The first nucleic acid strand or the second nucleic acid strand independently have a length of 16 to 35 nucleotides. The 3? terminus of the two oligonucleotide strands may have an overhang of 0 to 6 nucleotides in length.
    Type: Application
    Filed: April 29, 2020
    Publication date: July 7, 2022
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20220096516
    Abstract: The present invention relates to oligomeric nucleic acids and uses thereof for the treatment of tumors. The oligomeric nucleic acid for tumor treatment provided by the present application can be small activating nucleic acid molecules. A small activating nucleic acid molecule of the present invention can be a double-stranded or single-stranded RNA molecule targeting the promoter region of an LHPP gene comprising a first nucleic acid strand and a second nucleic acid strand. The double-stranded RNA molecule targeting the promoter region of the LHPP gene comprises two nucleic acid strands of 16 to 35 nucleotides in length, wherein one of the nucleic acid strands has at least 75% homology or complementarity to a target selected from the promoter region of the LHPP gene.
    Type: Application
    Filed: June 25, 2019
    Publication date: March 31, 2022
    Inventors: Tao KANG, Longcheng LI, Moorim KANG
  • Publication number: 20220096350
    Abstract: Provided are small activating nucleic acid molecules for skin care and uses thereof. The small activating nucleic acid molecule of the present invention comprises two oligonucleotide strands of 16 to 35 nucleotides in length, wherein one nucleotide strand has at least 75% homology or complementarity to a target selected from a promoter region of a target gene. Also provided are skin care products comprising a small activating nucleic acid molecule targeting the promoter region of the AQP3, AQP9, ELN, COL1A1, COL1A2, COL3A1, HAS1, HAS2, HAS3 or MFAP2 genes or a nucleic acid encoding the same and optionally an carrier or other effective ingredients. Further provided are methods for upregulating the expression of a target gene in cells using the small activating nucleic acid molecule or the nucleic acid encoding the same and improving skin conditions using the skin care products.
    Type: Application
    Filed: January 22, 2020
    Publication date: March 31, 2022
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20220064642
    Abstract: The present invention relates to a small activating nucleic acid molecule for treating spinal muscular atrophy and use thereof. The small activating nucleic acid molecule comprises a sense nucleic acid strand and an antisense nucleic acid strand, wherein the sense nucleic acid strand and the antisense nucleic acid strand are independently an oligonucleotide strand of 16 to 35 nucleotides in length, in which one nucleotide strand has at least 75% base homology or complementarity to a target selected from a promoter region of a target gene SMN2.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 3, 2022
    Inventors: Longcheng LI, Moorim KANG
  • Publication number: 20210332366
    Abstract: saRNAs are provided in the present invention. The saRNAs are composed of a first oligonucleotide strand containing 17 to 30 nucleotides and a second oligonucleotide strand containing 17 to 30 nucleotides. Sequences of at least 15 nucleotides in length are complementary in the two oligonucleotide strands, and the unpaired terminal nucleotides form overhangs. The first oligonucleotide strand or the second oligonucleotide strand has more than 75% homology or complementarity with any continuous fragment of 16 to 35 nucleotides in length in the promoter of the target gene. The second oligonucleotide strand has an overhang composed of 1 to 4 nucleotides at 3? end. saRNAs of the present invention can upregulate target gene expression more effectively while reducing off-target effects.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 28, 2021
    Inventors: Longcheng LI, Moorim KANG, Robert F. PLACE, Jiancheng WU
  • Publication number: 20210024915
    Abstract: The present invention provides a saRNA for activating or upregulating human p21 expression, the saRNA comprises a sense oligonucleotide strand and an antisense oligonucleotide strand, and the sense nucleic acid strand or the antisense nucleic acid strand has more than 75% homology with any continuous fragment of 16 to 35 nucleotides in length in the target gene sequence of a human p21 promoter, wherein the target nucleic acid sequence of the human p21 promoter is selected from a group consisting of SEQ ID NOs: 5, 6, 7, 8, 9, 10, 11, and 12.
    Type: Application
    Filed: April 10, 2019
    Publication date: January 28, 2021
    Inventors: Longcheng Li, Moorim Kang, Jiancheng Wu
  • Patent number: 9297008
    Abstract: The present invention provides compositions, pharmaceutical preparations, kits and methods for increasing expression of a gene product in a cell by contacting the cell with a small activating RNA (saRNA) molecule comprising a ribonucleic strand that is complementary to a non-coding nucleic acid sequence of the gene.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: March 29, 2016
    Assignee: The Regents of the University of California
    Inventors: Longcheng Li, Rajvir Dahiya
  • Publication number: 20150104869
    Abstract: The present invention provides compositions, pharmaceutical preparations, kits and methods for increasing expression of a gene product in a cell by contacting the cell with a small activating RNA (saRNA) molecule comprising a ribonucleic strand that is complementary to a non-coding nucleic acid sequence of the gene.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 16, 2015
    Inventors: Longcheng Li, Rajvir Dahiya
  • Patent number: 8877721
    Abstract: The present invention provides compositions, pharmaceutical preparations, kits and methods for increasing expression of a gene product in a cell by contacting the cell with a small activating RNA (saRNA) molecule comprising a ribonucleic strand that is complementary to a non-coding nucleic acid sequence of the gene.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: November 4, 2014
    Assignee: The Regents of the University of California
    Inventors: Longcheng Li, Rajvir Dahiya
  • Publication number: 20100210707
    Abstract: The present invention provides compositions, pharmaceutical preparations, kits and methods for increasing expression of a gene product in a cell by contacting the cell with a small activating RNA (saRNA) molecule comprising a ribonucleic strand that is complementary to a non-coding nucleic acid sequence of the gene.
    Type: Application
    Filed: April 11, 2006
    Publication date: August 19, 2010
    Inventors: Longcheng Li, Rajvir Dahiya