113 results about "Granular cell" patented technology

An inverted microwell (102) provides rapid and efficient microanalysis system (100) and method for screening of biological particles (128), particularly functional analysis of cells on a single cell basis. The use of an inverted open microwell system (102) permits identification of particles, cells, and biomolecules that may be combined to produce a desired functional effect also functional screening of secreted antibody therapeutic activity as well as the potential to recover cells and fluid, and optionally expand cells, such as antibody secreting cells, within the same microwell.

A particle/cell separation device is described which is particularly adapted for neutrophil depletion from a preparation of whole blood or platelet-rich plasma. Also described are blood and platelet rich plasma compositions produced using the device which are neutrophil-depleted.

This invention relates to reagent comprising: any one of cells, viral particles, organelles, parasites, cells comprising organelles, cells comprising viral particles, cells comprising parasites, cells comprising bacterial cells and any combination thereof, the cells, viral particles, organelles or parasites comprising at least one nucleic acid sequence serving as an internal control (IC) target for nucleic acid testing (NAT) assay; wherein the reagent is suitable to be added to a test sample undergoing sample preparation to release, concentrate and/or purify nucleic acids and amplification and/or detection of nucleic acids so as to be used to verify: (i) the efficiency of sample preparation; and (ii) the efficiency of nucleic acid amplification and/or detection. The present invention also relates to a method to verify or validate the preparation and amplification and/or detection of a nucleic acid target sequence in a sample spiked with a reagent of the present invention.

The invention discloses a method for promoting in-vitro maturing of human immature oocyte by utilizing a 3D printing technology. The method comprises the following steps: separating and collecting granular cells in clinic, propagating the granular cells in an in-vitro culture mode for 2 to 7 days; evenly mixing biological hydrogel with the pre-processed granular cells, printing artificial follicles by a biological 3D printing technology; adding a culture liquid into the artificial follicles, wherein the volume percentage content of human mature follicular fluid of the culture liquid is not less than 10%; culturing for 24 to 48 hours, then adding an immature oocyte-cumulus granular cell composite body, and culturing the 3D cells for 24 to 48 hours to promote the maturing. In the provided method, a 3D cell printing technology is adopted, human granular cells are used to construct an immature oocyte 3D culturing system, and multiple growth factors and simulated follicle culture liquid are added at the same time to create a simulated human follicle so as to promote the in-vitro maturing of immature oocyte.

The invention discloses an immune chromatography reagent paper for rapidly diagnosing anaplasmosises of granular cells of a human body, comprising a sample loading pad (1), a colloidal gold pad (2) of an msp2 antibody containing a golden mark, a pyroxylin film (3) for wrapping a quality control line (6) and a detection line (5), and a sample absorbing pad (4), wherein the upper surface of the pyroxylin film (3) is respectively provided with the colloidal gold pad (2) and the sample absorbing pad (4); the sample loading pad (1) is arranged on the upper surface of the colloidal gold pad (2); the detection line (5) is an msp2 polyclonal antibody which is coated on the pyroxylin film (3); and the quality control line (6) is a goat-anti-rabbit IgG antibody which is coated on the pyroxylin film (3). The invention also provides a preparation method for the immune chromatography reagent paper which is suitable for diagnosing anaplasmosises of granular cells of a human body on site.

The invention provides a miRNA biomarker for diagnosis of polycystic ovarian syndromes.The miRNA biomarker is miR27a.Research shows that miR27a promotes apoptosis of granular cells, inhibits generation of aromatase, makes female hormones in granular cells disproportionate and leads to ovulation failures to cause polycystic ovarian syndromes.By inducing a mouse polycystic ovarian syndrome model with DHT, it is found that miR27a is highly expressed in the mouse polycystic ovarian syndrome model, and the effect of miR27a and target genes thereof in nosogenesis of polycystic ovarian syndromes is verified.miR27a can serve as a biomarker for polycystic ovarian syndromes, and a theoretical basis is provided for clinical pharmacy.

The invention discloses a construction method of a Rosa26 gene Mir3061 fixed-point knock-in heterozygote mouse model and an application thereof. The constructed mouse gene is Rosa26LSL/+, and the construction method is provided for the first time and is not reported in any domestic or foreign literature reports. And the model provides an effective experimental animal model for the research on thepathogenesis of POF, the research and development of medicines and the evaluation of drug effect. The invention also provides the application of the mouse model in screening and preparing medicines for detecting/treating reproductive development diseases and medicines for detecting/treating aging and apoptosis diseases of ovarian granulosa cells. The model provides an effective experimental animalmodel for reproductive development genetics, preparation of medicines for detecting/treating ovarian diseases and screening of related medicines, and has good practical value, good medical clinical application prospect and great social benefit.

The invention provides a method for obtaining an FSHR (follicle-stimulating hormone receptor) full-length coding region sequence with multiple splice forms. The method comprises the steps: extracting total RNA of a sheep granular cell, and reversely transcribing into cDNA; according to initiation codon upstream and termination codon downstream of a cDNA sequence of a sheep FSHR gene, designing two pairs of primers, wherein an upstream primer F1 is CAAAAGGGCTCAGTGTGGAG, an upstream primer F2 is CGTCTGCAGAAGCAGAAGCA, a downstream primer R1 is CTTATGGATGTGCCAGGGAG, and a downstream primer R2 is AGTGCTCTGTCAGCTCTTGC; taking the obtained cDNA as a template, carrying out PCR amplification of the FSHR gene, and extracting the PCR product by a Tiangen gel extraction kit; and adding an A tail into the PCR product, and cloning, sequencing and verifying an T vector. The obtained FSHR full-length coding region sequence with the multiple splice forms is characterized by comprising the oFSHR695, oFSHR694, oFSHR648, oFSHR633 and oFSHR595.

The invention discloses a blood cell separation method for portunus trituberculatus. The method comprises the following steps: diluting iodixanol with an isotonic solution obtained by regulating an osmotic pressure of a PBS buffer solution by utilizing a sodium chloride solution, and performing gradient preparation to obtain three iodixanol solutions of different concentrations; forming gradient solutions of different densities by adopting a cushion technology, and standing to form a continuous density gradient solution to serve as a cell separation solution; collecting blood cells of portunustrituberculatus, and taking mixed cell suspension obtained by diluting the isotonic solution; slowly dropping the mixed cell suspension into the cell separation solution, centrifuging, and dividing the blood cells of portunus trituberculatus into three layers, wherein the uppermost layer refers to clear cells, the intermediate layer refers to small granular cells, and the lowest layer refers to large granular cells. The method has the advantages that only one-step density gradient centrifugation is adopted, the operation is simple, and experiments discover that the separated blood cells haveexcellent viabilities and can be used for cell culture.

The invention discloses application of PIK3R2 in pig ovarian granular cells. A PIK3R2 interference small fragment is synthesized with PIK3R2 as a research object, ovarian granular cells are transfected, it is found that PIK3R2 promotes granular cell apoptosis and inhibits cell proliferation, and research is performed by regulating the functions of miR-126-3p cells expressed by PIK3R2 in granular cells. After exogenous disturbance PIK3R2 is supplemented, cell function phenotype caused by miR-126-3p can be restored through the verification, it is shown that PIK3R2 is an important functional target of miR-126-3p in granular cells, and miR-126-3p can regulate cell development of the granular cells by means of PIK3R2. By means of PIK3R2 and application of targeted miRNA of miR-126-3p in ovarian granular cells, PIK3R2 has good application value for researching an ovarian follicles locking mechanism.

The invention discloses application of a RBP1 gene in sow ovarian granular cells. RBP1 is taken as a research object, and a molecular and cell biological method is adopted to study the application ofthe RBP1 in sow ovarian granular cells. The molecular and cell biological method includes the following steps that through ChIP-Seq, it is found that the enrichment degree of H3K4me3 is different in RBP1 gene promoter regions in follicles different in size; through qRT-PCR, it is found that the expression quantity of the RBP1 gene in follicles different in size is different significantly. By promoting or inhibiting the enrichment degree of H3K4me3 in the sow ovarian granular cells, it is found that promotion of the enrichment degree of H3K4me3 can promote transcription of the RBP1 gene, and inhibition of the enrichment degree of H3K4me3 can inhibit transcription of the RBP1 gene; through RBP1 over-expression or interference with RBP1, it is found that RBP1 can promote proliferation of thesow ovarian granular cells and inhibit apoptosis.

The invention discloses a method for constructing a heterozygote mouse model of an Amh gene fixed-point knock-in 2A-Cre and an application thereof. According to the method, the heterozygote mouse model can be obtained, and an effective experimental animal model is provided for the research of POF pathogenesis, the research and development of drugs and the evaluation of drug effect. The invention provides the application of the heterozygote mouse model in screening and preparing drugs for detecting/treating reproductive development diseases, drugs for detecting/treating ovarian diseases and drugs for aging and apoptosis diseases of ovarian granulosa cells. The invention provides the method for constructing the heterozygote mouse model for the first time, and no domestic and foreign literature reports are found before. The model has good medical clinical application prospect, has great application value in preparing medicaments for detecting/treating ovarian diseases, and has great social benefit.

The invention provides oocyte culture fluid and a culture method of the oocyte culture fluid. The oocyte culture fluid is easy to prepare and low in cost and comprises G-IVF culture fluid, follicular fluid and granular cells. According to the oocyte culture fluid and the culture method of the oocyte culture fluid, the follicular fluid extracted from the follicle of a patient and granular cells around the oocyte are treated specially and added into the culture fluid, so that in-vitro maturity culturing is carried out on the immature egg of the remaining ICSI period, then fertilization, embryonic development and pregnancy results are analyzed, a simple, convenient and effective in-vitro maturity culture scheme is set up, the effective utilization rate of the immature egg is increased, and more pregnancy opportunities can be provided for the infertility patient.

The invention discloses a separation, primary culture and subculture method for granulosa cells in follicles in a pig ovary GV period. The method comprises the following steps: collecting a cyst-free healthy pig ovary, and cleaning the ovary; separating granular cells; carrying out primary culture on the granular cells for 48 hours; changing liquid in a culture bottle for primary culture; after changing the liquid, continuously culturing the cells for 36 hours, and cleaning, digesting and terminating the cultured cells; and finally, sub-packaging and subculturing the cells for 48 hours. The invention provides a pollution-free ovary collection method, optimizes a granulosa cell acquisition and culture method, and further provides a primary granulosa cell subculture method. Granular cells obtained by the method are almost free of pollution, high in cell uniformity, high in consistency in the growth and development period, high in cell survival rate, high in success rate of making oxidative stress models and the like, and high in result consistency, practicability, stability and feasibility. In addition, the number of obtained cells is large, many subsequent experiments can be carried out, the number of times of going to a slaughter house is reduced, and the efficiency is high.

The invention relates to the field of biological medicines, in particular to an application of nicotinamide mononucleotide in preparation of a medicine for preventing, improving and/or treating the polycystic ovarian syndrome (PCOS). A PCOS rat model is constructed by combining letrozole with high-fat feed, the protective effect of the nicotinamide mononucleotide on the PCOS is studied, and experimental results show that nicotinamide mononucleotide intervention can obviously improve the follicular development condition of PCOS rats, increase the number of corpus luteum, thicken granular cell layers, restore the oestrus cycle of the rats, reduce body weight and fasting blood sugar, reduce serum androgen, luteinizing hormone, insulin and insulin resistance index level, increase secretion oflactic acid and ATP, and improve ovarian energy metabolism.

The invention provides an embryonic stem cell specific marker GM-CSFR alpha (granular cell-macrophage colony stimulating-factor receptor alpha link) and an application thereof. The embryonic stem cell is directly used as immunogen, the prepared GM-CSFR alpha polyclonal antibody or rabbit antibody GM-CSFR alpha is used as a stem cell identification reagent, the detected specificity and sensitivity are higher, and the embryonic stem cell specific marker GM-CSFR alpha can be used for the separation and activity detection of the embryonic stem cell. An embryonic stem cell detection reagent kit containing the GM-CSFR alpha polyclonal antibody or a rabbit antibody GM-CSFR alpha not only can be used for testing the totipotency of the embryonic stem cell, but also can be used for detecting the activity of the stem cell, so that the function of the detection reagent kit can be enlarged.

The invention discloses a novel cervical exfoliated cell separation method, which is characterized by: placing cervical exfoliated cells in phosphate buffer solution (PBS) and uniformly mixing by whirling to obtain cell suspension; adding the cell suspension into mucilage separating solution; centrifuging, removing supernate, adding the phosphate buffer solution (PBS) again and re-suspending sediment to obtain re-suspended cell suspension; and adding the re-suspended cell suspension into neutral granular cell separating solution Ficoll, centrifuging, removing supernate and obtaining the settlement which is pure cells after centrifugation. The method of the invention greatly purify clinically extracted cervical exfoliated cell specimens, adopts simple and convenient operation steps, is suitable for large-scale cell separation with stable and reliable effect, can obtain high-purity target cells, has high actual use value and a promising market prospect.

The present invention provides a method or a kit for diagnosing polycystic ovary syndrome by the detection of HMGA2-IMP2 pathway. The present invention also provides a method or a kit for diagnosing female granular cell abnormality by the detection of the HMGA2-IMP2 pathway.

The invention discloses a jujube cheese which is prepared by mixing the following raw materials in parts by weight: 25-35 parts of golden-silk jujube, 25-35 parts of wild jujube, 0.6-1 part of sweetener, 0.15-0.3 part of stabilizer and 10 parts of xylitol. The advantages of the jujube of the invention are as follows: 1. the jujube cheese can kill enzyme in granular cells to prevent browning phenomenon; 2. the jujube cheese does not damage stone cells and pulp in the jujube pulp; 3. the jujube cheese can lead fine pulp particles to be evenly suspended in the jujube pulp to increase mouth feel, thus people can feel the color, aroma and taste of the jujube, and CMC is odorless, tasteless and non-toxic, and has good binding force and diffusivity; and 4. the jujube cheese preserves the nutrition constituents and the flavor of red jujubes and the wild jujubes to the greatest extent, and is a natural, green, healthy and high-nutritive-value beverage.

The invention provides a culture method for in-vitro human oocyte preantral follicles. The culture method is characterized by comprising the following specific steps of: 1) unfreezing the in-vitro human oocytes placed in frozen protecting solution containing cane sugar and propylene glycol and subjected to liquid nitrogen low-temperature storage, and then reviving and culturing; and 2) separating and extracting the in-vitro human oocytes obtained by reviving and culturing, then placing the in-vitro human oocytes in nutrient solution containing follicle-stimulating hormone (FSH), and performing preantral culture, wherein the culture for in-vitro human oocyte preantral follicles needs the support of FSH, and FSH can be used for promoting the growth of the follicles, increasing the survival time of the follicles, promoting the proliferation of granular cells, and promoting the maturation of the oocytes, as well as is an important factor for regulating and controlling the growth and development of the follicles; and trichostatin A can be used for effectively inhibiting the proliferation of tumour cells, regulating and controlling the progress of a cell cycle and then inducing the apoptosis of tumour cells, thus ensuring the survival quality of the cells. The method has important significance on researches in the aspect of test-tube babies.