41 results about "Apoptosis resistance" patented technology

The invention belongs to the field of allogenic mesenchymal stem cells, and particularly relates to a preparation method of allogenic mesenchymal stem cells by CRISPR (clustered regularly interspaced short palindromic repeats) technique editing and IGF (insulin-like growth factor) optimization and application of the allogenic mesenchymal stem cells in treating myocardial infarction. The preparation method comprises the following steps: carrying out separation by density gradient centrifugation to obtain allogenic single karyocytes, and carrying out adherent culture to obtain mesenchymal stem cells; designing a mesenchymal stem cell surface antigen B2M-gRNA and an inflammatory factor TNF-alpha-gRNA; establishing recombinant slow virus particles, and transfecting the mesenchymal stem cells; optimizing the mesenchymal stem cells by using IGF-1; and preparing drugs for treating myocardial infarctions by using the modified and optimized mesenchymal stem cells. The CRISPR/Cas9 technique is utilized to remove the antigens capable of causing immunological rejection and the inflammatory factors capable of causing inflammatory reaction on the mesenchymal stem cell surface, and the IGF-1 is utilized to enhance the apoptosis resistance of the mesenchymal stem cells and promote the homing of the mesenchymal stem cells, thereby providing a new technical scheme for preparing drugs for treating cardiovascular diseases in clinic. The prepared allogenic mesenchymal stem cells can not cause immunological rejection after cell transplantation.

The invention belongs to the field of medicament technology, and especially relates to applications of a tetramethylpyrazine derivative tetramethylpyrazine nitrone to medicament preparation as well as prevention and treatment of brain injury diseases. Experiments prove that tetramethylpyrazine nitrone can improve traumatic brain injury and brain injury after subarachnoid hemorrhage; the improvements concretely comprise the following aspects: improvement of behaviors of model rats with traumatic brain injury and subarachnoid hemorrhage, reduction of cerebral infarction areas due to traumatic brain injury, improvement of vasospasm state after subarachnoid hemorrhage, and protection of brain tissues. Mechanisms of action of tetramethylpyrazine nitrone relate to inhibition of oxidative stress injuries, inhibition of inflammatory reactions, and apoptosis resistance. Tetramethylpyrazine nitrone can be used as a medicine for preventing and treating brain injury diseases, especially traumatic brain injury and subarachnoid hemorrhage, and can be prepared into various dosage forms with medicinal carriers.

The invention discloses genetic recombinant collagen-like peptide MJLGG-34 as well as a preparation method and application thereof, and belongs to the technical field of genetic engineering. Comparedwith the traditional natural collagen, the collagen-like peptide MJLGG-34 obtained through genetic recombination has the advantages that the collagen-like peptide MJLGG-34 is small in molecular weight, easy to prepare and stable biological activity, has better transdermal rate and higher biological activity, and is more easily absorbed by skin while guaranteeing the biological activity; the collagen-like peptide MJLGG-34 is good in biocompatibility and biology safety, has excellent biological activity, such as oxidation resistance, apoptosis resistance and melanogenesis inhibiting, can obviously inhibit oxidative damage of skin, regulate melanogenesis and resist ageing, and does not have obvious toxic or side effects; the collagen-like peptide MJLGG-34 can be applied to food, health care products and cosmetics, and is wide in application range, thereby having the excellent application value and industrial prospect. The preparation method is simple, high in production efficiency, low inproduction cost and wide in application prospect.

The invention discloses a glycosyl-modified polyphenol compound and a preparation method as well as an application thereof. The glycosyl-modified polyphenol compound has the following structure shown in the specification. The glycosyl-modified polyphenol compound is good in water solubility and has the high free radical scavenging rate and the good cell oxidation apoptosis resistance, thereby being wide in application prospect. The glycosyl-modified polyphenol compound can be applied to the development of anti-oxidation medicines. The glycosyl-modified polyphenol compound is simple in preparation method and easy to operate and avoids the application of a catalyst so as to realize environmental friendliness.

The invention belongs to the technical field of gene engineering, and particularly relates to a fusion protein formed by fusing a protein transduction domain (PTD) coded by TAT (trans-activator of transcription) genes of HIV (human immunodeficiency viruses) and an X-linked inhibitor of apoptosis protein (XIAP) nucleotide sequence. The amino acid sequence of the fusion protein is expressed as SEQ ID No: 1. Compared with the prior art, the original XIAP genes with nucleotide sequence expressed as SEQ ID No: 3 are optimized by using escherichia coli preferred codons so that the original XIAP genes are efficiently expressed in escherichia coli, the defect that the XIAP cannot stride the blood brain barrier or enter the brain to play a role in apoptosis resistance is made up by using the transduction capability of the PTD coded by the TAT genes of the HIV so that the final expression product of the genes can enter the brain tissue cells to play a role in cell apoptosis resistance, and the fusion protein is used for therapy and research of central nervous system diseases.

The invention belongs to the field of pharmacy and relates to a new application of a traditional Chinese medicine motherwort extract in pharmacy, in particular to the application of the purified motherwort extract in preparing nerve protection medicine for treating cerebral injury, especially the application of the purified motherwort extract in preparing brain protection medicine for treating artery obstruction in the brain. By an animal experiment of the purified motherwort extract, a result indicates that the brain stem volume is obviously reduced after the purified motherwort extract is applied, the obstacle grading of the nerve function is decreased by being compared with a contrast group, the total antioxidant concentration in plasma is increased, the DNA oxidation injury is reduced, the expression levels of apoptosis and apoptosis promoting protein are reduced, and the content of apoptosis resistance protein is also increased. The purified motherwort extract can be used for preparing the nerve protection medicine for treating the cerebral injury and can effectively treat cerebral apoplexy.

The invention discloses application of baicalein (chemical name: 5,6,7-trihydroxyflavone) as shown in a general formula (I) in preparing medicaments for preventing and treating Parkinson diseases. The invention relates to the application of the baicalein capable of reducing the trembling frequencies and amplitudes of the Parkinson diseases and improving and treating the symptoms of the Parkinson diseases, in particular to the application of the baicalein capable of protecting dopaminergic neurons from damage so that the pathological changes and the development of the Parkinson diseases can be effectively prevented and treated; and the baicalein exerts the function of protecting the dopaminergic neurons through apoptosis resistance, inflammatory resistance and antioxidation and exerts the function of inhibiting Parkinson symptoms through the function on nervous systems.

The invention relates to a medicament based on rosmarinic acid and application thereof in treating Parkinson's disease. According to the formula of the medicament, the medicament comprises rosmarinic acid and sodium citrate with the molar concentration thereof being 1:104 to 1:1011. The medicament achieving the effect of neuroprotection in MES23.5 dopaminergic cells can obviously relieve the reduction in the survival rate of the MES23.5 cells caused by the induction of neurotoxin, i.e., 6-hydroxydopamine (6-OHDA) or 1-methyl-4-phenylpyridine cations, obviously relieve the reduction in the mitochondrial membrane potential of the cells caused by the induction of neurotoxin, i.e., 1-methyl-4-phenylpyridine cations and the generation of ROS (reactive oxygen species) substances and obviously improve the morphologic changes of nuclei caused by the induction of neurotoxin, i.e., 6-hydroxydopamine (6-OHDA) or 1-methyl-4-phenylpyridine cations, thereby achieving the effects of neuropretection, oxidation resistance and apoptosis resistance. The medicament of the invention having low toxicity and side effect has significant application prospect and actual value for the development into a novel anti-Parkinsonism natural medicament.

The invention relates to an application of miR-21 in preparing an EnMSCs (endometrium derived mesenchymal stem cells) paracrine effect regulator, and a culture method for regulating an EnMSCs paracrine effect. According to the application provided by the invention, it proves that with the down-regulated expression of the miR-21, an EnMSCs paracrine protective effect can be weakened. The invention provides the application of the miR-21 in preparing the EnMSCs paracrine effect regulator; and through miR-21-KD (miRNA-21 knockdown), the effects of an EnMSCs exosome on myocardium cell apoptosis resistance and angiogenesis of HUVECs (human umbilical vein endothelial cells) can be effectively inhibited, thus proving the effect of the miR-21 on regulating and controlling the EnMSCs.

The invention belongs to the field of biologic medicines, and particularly relates to an application of autocrine VEGF-B to T cell metabolism and functions as well as tumor immunity treatment. For thefirst time, the invention discloses that blood vessel endothelium growth factors B(VEGF-B) are metabolism adjusting and controlling factors selectively secreted by different subtypes of activated T cells. Through antibodies, or peptide activated T cells, and/or excitants which can promote biologic synthesis of mitochondria, or reagents for adjusting and controlling ROS/AP-1 signals pertinent to the mitochondria, the activated T cells can be induced by a ROS/AP-1 signal channel to secrete VEGF-B, so that fatty acid ingestion, apoptosis resistance, tumor resistance activity and the like of theT cells can be promoted. The metabolism of T lymphocytes is programmed through tumor microenvironment, and the autocrine VEGF-B has great application prospects in tumor immunity treatment.

The invention discloses a dithiocarbamic acid mixed-valence copper complex as well as preparation and application thereof; the chemical formula of the copper complex is [CuII2(L)2(Br)2CuI(Br)], wherein HL is 2-(bis(pyridin-2-yl)methylene)hydrazine methyl methyl dithiosulfate. The preparation method of the copper complex is simple, and the target product dithiocarbamic acid mixed-valence copper complex has obvious fluorescence in a green region of 450-650 nm of a visible spectrum, is used for cancer cell imaging based on fluorescence and is used for preparing a cancer cell imaging fluorescent probe. The target product also has good anti-cancer activity and cancer cell metastasis resistance activity. Particularly, the target product provided by the invention can induce cancer cells with apoptosis resistance, such as pancreatic cancer cells and ferroptosis (cell death in a non-apoptotic form), effectively overcomes the occurrence of drug resistance, and has quite good application value.

The invention discloses a circRNA marker related to apoptosis of dairy cow mammary epithelial cells and application thereof. The circRNA marker is circbEZH2, and the sequence of the circbEZH2 is shown as SEQ ID NO: 1. Whether the circbEZH2 forms a ring or not and the effect of an overexpression vector in the process of detecting the apoptosis resistance of the dairy cow mammary cells are verified, the overexpression vector plasmid of the circbEZH2 is transfected into the dairy cow mammary epithelial cells, the overexpression circbEZH2 can inhibit apoptosis of the dairy cow mammary epithelial cells, a new thought is provided for further analyzing the genetic mechanism of growth and development of the dairy cow mammary cells, deeper cognition is brought to the molecular mechanism of regulating and controlling the lactation characters of dairy cows through circular RNA, and the circRNA marker is applied to research of the molecular regulation and control mechanism of heat stress resistance of livestock and has good application prospects; and the circRNA marker has important significance in researching lactation regulation and control of the dairy cows and improving the dairy cow quality.