114 results about "Proliferation rate" patented technology

The invention provides cubilose peptide and a key preparation method of cubilose peptide maternity cubilose, and the preparation method of the cubilose peptide comprises the following steps: soaking dry cubilose in pure water at 0-4 DEG C according to a material-liquid ratio of 1: 10 for 2 hours, scattering, and spin-drying to obtain soaked cubilose; mixing the soaked cubilose with pure water according to a mass ratio of 1: (15-20), sealing, stewing at 121-123 DEG C for 12-15 minutes, cooling to room temperature, and repeatedly stewing once to obtain fresh stewed cubilose; carrying out an in-vitro digestion experiment on the freshly stewed cubilose, and simulating the digestion process of the freshly stewed cubilose in gastrointestinal tracts to obtain digested cubilose; and centrifuging the digested cubilose to obtain a supernatant, treating the supernatant, carrying out protein sequencing, and carrying out on-line database comparison to screen out peptide fragments with high matching degree and response value greater than 109, thereby obtaining the cubilose peptide. The cubilose peptide can significantly improve the proliferation rate of nerve cells, and provides a cell basis for the development of a nervous system.

The invention discloses a culture method for improving proliferation and differentiation capacity of NK (Natural Killer) cells based on angelica sinensis-astragalus membranaceus exosomes, which comprises the following steps: firstly extracting exosomes in angelica sinensis and astragalus membranaceus, then adding the exosomes into an NK cell culture system according to a specific concentration, and regulating and controlling an NK cell signal channel by virtue of active ingredients carried by the exosomes so as to improve the proliferation and differentiation capacity of the NK cells. Therefore, the proliferation rate and differentiation maturity of the NK cells are remarkably improved. Experimental results show that compared with a traditional culture method, the proliferation multiple of the NK cells cultured through the method is increased by 28.99%-33.69%, the proportion of differentiated mature cells is increased by 15.91%-28.30%, and the cell killing activity is not remarkably reduced. The method can be widely applied to the field of immune cell treatment, provides a high-quality NK cell source for clinic, effectively solves the problems of slow cell proliferation rate, low differentiation maturity, easy activity reduction after large-scale culture and the like in traditional NK cell in-vitro culture, and has important clinical application value and industrialization prospect.

The invention discloses a tissue dissociation liquid, a tissue dissociation method and application thereof, and relates to the technical field of cell biology. In a DMEM / F12 culture medium, the tissue dissociation liquid only contains the following raw materials in concentration: 0.5 to 3 mg / mL of type II collagenase, 0.5 to 2 mg / mL of type IV collagenase, 0.5 to 2 mg / mL of hyaluronidase, 10 to 18 [mu] M of Y27632 and 80 to 150 [mu] g / mL of primocin. The tissue dissociation liquid provided by the invention can dissociate normal tissues or tumor tissues into single cells or cell clusters, the single cells obtained by the digestion method are high in proliferation rate and easy to successfully culture, and the tissue dissociation liquid has the technical advantages that the cell yield and survival rate are maintained at a relatively high level. Therefore, the tissue dissociation liquid provided by the invention has good application prospects in tumor tissue dissociation, cell line construction and organoid model construction.

The invention provides a dynamic regulation and control method for optimizing CAR-T cell amplification conditions, which comprises the following steps: acquiring high-frequency cell activity monitoring data from a cell culture system, and extracting metabolic marker fluctuation and proliferation rate mutation from the high-frequency cell activity monitoring data to obtain real-time cell state parameters; comparing the real-time cell state parameters with a T cell subset proportion and a cell factor release mode in historical immune data of the patient to obtain a cell state deviation value, and determining an abnormal fluctuation condition of proliferation rate mutation according to the cell state deviation value; if the abnormal fluctuation of the proliferation rate mutation exceeds a preset fluctuation threshold value, capturing proliferation signal abnormity by analyzing metabolic marker fluctuation and metabolic waste accumulation according to the cell state deviation value; according to the targeted culture parameter set, adjusting the oxygen supply quantity and the culture solution microenvironment of an oxygen concentration control system to obtain a culture environment for inhibiting cytokine storm and proliferation signal abnormity.

The invention discloses an EST protease activity detection method which comprises the following steps: a, setting an EST experimental group, a negative control group and a blank control group; b, carrying out incubation reaction on the EST experimental group, the negative control group and the blank control group to obtain respective reaction mixtures; c, detecting the influence of the reaction mixture on breast cancer cell proliferation to obtain the proliferation rate of each group; and d, calculating the enzymatic activity of the EST protein. The method disclosed by the invention is simple and easy to implement, good in repeatability and capable of effectively detecting the activity of the EST protease.

The invention discloses an umbilical cord mesenchymal stem cell serum-free culture medium, which is composed of a basic culture medium and additive components, and the additive components comprise, by final concentration, 5-20 [mu] g / mL of astragalus polysaccharide, 0.5-2.0 [mu] g / mL of salidroside, 0.1-0.5 [mu] g / mL of tanshinone IIA, 0.1-0.3 mg / mL of sodium pyruvate, 5-15 mM of D-ribose, 3-6 mg / mL of recombinant human albumin, and 5-10 [mu] g / mL of recombinant transferrin; the invention also discloses a method for culturing umbilical cord mesenchymal stem cells under the hypoxia condition by using the serum-free culture medium. The method comprises the steps of cell inoculation, culture under the hypoxia condition, subculture, cell passage and the like. The astragalus polysaccharide, the salidroside, the tanshinone IIA, the sodium pyruvate, the recombinant human albumin and the recombinant transferrin are added into the serum-free culture medium, so that nutrition supply and function maintenance of cells under a low-oxygen condition are guaranteed, the proliferation rate and the differentiation capacity of the cultured cells are improved, the apoptosis rate of the cells is reduced, and the survival rate of the cells is increased. Wide application prospects are realized in the fields of cell culture, regenerative medicine and the like.

The present application relates to the field of plant tissue culture technology, and particularly discloses a lily stem cell abundance ex vivo regulation method. The lily bulb is used as the starting material, stem cell magnitude amplification and regulation culture can produce lily tissue organ materials with high stem cell abundance. The present application provides sterile lily materials with high stem cell abundance, which has the characteristics of strong regenerative ability, high proliferation rate, etc., is the basis for protoplast preparation and high-efficiency regeneration, and is suitable for different lily varieties, and provides technical support for cell engineering breeding, seedling scale breeding, etc.

This invention belongs to the field of biomedical research, specifically relating to the use of the human CFAP65 gene as a target in the preparation of therapeutic or diagnostic drugs for gastric cancer. Extensive and in-depth research has revealed that downregulating the expression of the human CFAP65 gene using RNAi methods can effectively inhibit the proliferation of gastric cancer cells and effectively control the growth process of gastric cancer. The siRNA or nucleic acid constructs containing the siRNA sequence, or lentiviruses provided by this invention, can specifically inhibit the proliferation rate and growth of gastric cancer cells, thereby treating gastric cancer and opening up new directions for gastric cancer treatment.

The invention discloses a plant stem cell nutrition synergist, and belongs to the technical field of plant stem cell nutrient solutions. The nutrient synergist can significantly improve the proliferation rate and survival rate of stem cells, promotes differentiation of the stem cells to target cell types, plays an important role in stem cell culture, can significantly improve the culture efficiency of the stem cells, provides comprehensive nutrient support and a suitable growth environment for stem cell culture, and has good application prospects. Proliferation and differentiation of the stem cells are promoted, and further research on the plant stem cells is facilitated.

The application provides a kind of mitochondrial function optimization additive for cell culture, preparation method and application, belongs to cell culture technical field.The additive includes core active ingredient, auxiliary component and carrier, and the core active ingredient includes D-Arg-Cha-Lys-Phe-NH2 Polypeptide, ubiquinone-10 phosphate, reduced glutathione and alpha-lipoic acid.The application forms a multi-target core active system through the synergy of the four, realizes the triple synergistic protection of stabilizing mitochondrial cardiolipin, maintaining mitochondrial morphology and membrane potential, and reducing mitochondrial ROS, which can significantly improve cell culture quality.When applied, the mitochondrial cardiolipin content can be increased by more than 50%, the mitochondrial abnormality ratio can be reduced to less than 12%, the membrane potential positive cell ratio can be increased to more than 86%, the mitochondrial ROS level can be reduced by more than 40%, and the cell proliferation rate can be increased by more than 25%, which is suitable for in vitro culture of various eukaryotic cells, and the preparation process is simple and has no cytotoxicity.

Methods are provided for generating unlimited immune cells with increased lifespan and high proliferation rate by modifying them to express BCL6 and genes that promote cell survival. Further methods are provided for generating and using said unlimited immune cells to treat diseases such as cancer.

The invention relates to a method for efficiently increasing the somatic embryo occurrence rate in the later stage of picea crassifolia embryonic tissue proliferation and continuously obtaining regenerated plants. The method mainly comprises the following steps of pretreatment before differentiation of embryonic tissues subjected to long-term subculture preservation, somatic embryo differentiation and somatic embryo germination and somatic embryo seedling transplanting. In order to solve the technical problem that excellent cell lines are difficult to continuously use due to the fact that the proliferation rate and the somatic embryo occurrence rate are obviously reduced after the picea crassifolia embryogenic tissue is subcultured for a long time, the invention constructs a set of efficient somatic embryo generation and plant regeneration technology suitable for the later proliferation period of the picea crassifolia embryogenic tissue. According to the method, the proliferation rate and somatic embryo occurrence rate of the embryogenic tissue are greatly improved by pretreating the embryogenic tissue in the later proliferation stage, and the problem that the proliferation rate and somatic embryo differentiation rate of the picea crassifolia embryogenic tissue are rapidly reduced along with the prolongation of subculture time is effectively solved by combining with an optimized culture medium formula in the somatic embryo differentiation stage.

This invention relates to the field of biomedical polymer materials and surface modification engineering, specifically to a posterior scleral reinforcement material and its preparation method. It comprises a polymer matrix and a bioactive modified layer formed by the oxidative crosslinking of a heterobifunctional polymer coupling compound. This copolymer structure includes anchoring groups, hydrophilic linkers, and bioactive groups. Its core principle is to utilize the flexible extension of the hydrophilic linkers to reduce steric hindrance, fully exposing the bioactive groups to the material surface, thereby achieving efficient recognition and binding to integrin receptors. This invention effectively solves the problems of bioinertness of the synthesized polymer matrix and lack of cell recognition sites, achieving a cell proliferation rate more than twice that of the unmodified matrix, demonstrating the material's excellent bioactivity and cell compatibility.

The invention discloses a composition of type III collagen and beta-glucan and application of the composition in repairing vaginal mucosa injury, and belongs to the technical field of biological medicine, and the composition comprises the following effective components: type III collagen with the concentration of 0.3-1.8 mg / mL and beta-glucan with the mass concentration of 0.1-0.8%. The collagen III provides structural support required by tissue repair, the beta-glucan improves inflammation microenvironment, regulates immune response and jointly promotes proliferation and migration of damaged vaginal epithelial cells, the cell proliferation rate and the scratch healing rate are far higher than those of a group using any component independently, and rapid repair of mucosal lesions can be achieved.

The invention discloses a rumen fibroblast line as well as a construction method, a culture method and application thereof, the rumen fibroblast line G8 is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: C2025332, the rumen fibroblast line G8 has a typical fibroblast-like form and can be stably passaged, and the rumen fibroblast line G8 can be used as a rumen fibroblast cell line. The cell culture medium also has the characteristic of highly expressing fibroblast marker genes and the function of tolerating and utilizing rumen core metabolite butyric acid, and the proliferation rate and metabolic activity of the cell culture medium under the condition that 15mmol / L butyric acid is used as a main energy source are obviously superior to those of glucose culture; according to the construction method of the rumen fibroblast line, the steps of function screening and molecular identification are introduced, so that the identity authenticity of the constructed cell line can be ensured; the culture method of the rumen fibroblast line is simple and effective, culture medium materials are easy to obtain, and culture conditions are easy to realize; the rumen fibroblast line can be used for rumen in-vitro research, and is beneficial to clarification of a mechanism for regulating rumen interstitial metabolism and tissue repair by butyric acid.

The invention discloses a medical-grade PEEK composite material for 3D printing and a preparation method of the medical-grade PEEK composite material, relates to the technical field of 3D printing, and solves the problem of low biological activity of an existing PEEK material. The medical-grade PEEK composite material is prepared from the following raw materials in parts by weight: 80-95 parts of a polyether-ether-ketone matrix, 5-15 parts of a bioactive filler, 0.5-5 parts of an interface modifier and 0.1-3 parts of a heat conduction and nucleation enhancer, the bioactive filler comprises nano-hydroxyapatite and bioactive glass in a weight ratio of (1-5): (5-1). The natural bone environment can be effectively simulated, the biological activity of the composite material is improved, and cell adhesion and proliferation are promoted, so that the cell proliferation rate is increased, and the antibacterial effect and the mechanical property of the composite material can be effectively improved.

The application provides a kind of mitochondrial function optimization additive for cell culture, preparation method and application, belong to cell culture technical field.The additive includes core active ingredient, auxiliary component and carrier, and the core active ingredient includes D-Arg-Cha-Lys-Phe-NH2 Polypeptide, ubiquinone-10 phosphate, reduced glutathione and alpha-lipoic acid.The application forms a multi-target core active system through the synergy of the four, realizes the triple synergistic protection of stabilizing mitochondrial cardiolipin, maintaining mitochondrial morphology and membrane potential, and reducing mitochondrial ROS, which can significantly improve cell culture quality.When applied, the mitochondrial cardiolipin content can be increased by more than 50%, the mitochondrial abnormality ratio can be reduced to less than 12%, the membrane potential positive cell ratio can be increased to more than 86%, the mitochondrial ROS level can be reduced by more than 40%, and the cell proliferation rate can be increased by more than 25%, which is suitable for in vitro culture of various eukaryotic cells, and the preparation process is simple and has no cytotoxicity.

The invention belongs to the technical field of food-borne functional factors, and particularly relates to a bioactive glycopeptide as well as a preparation method and application thereof. According to the application, casein glycomacropeptide is taken as a substrate, specific protease is adopted for carrying out directional enzymolysis reaction on the casein glycomacropeptide, and after primary separation and purification by hydrophilic interaction chromatography and secondary purification by cation exchange chromatography are carried out, the bioactive glycopeptide with the molecular weight of less than 1,500 Da and more than 80% of components and the random coil secondary structure content of more than 35% is obtained. A system performance test shows that in an in-vitro cell experiment, the bioactive glycopeptide prepared by the embodiment of the invention can remarkably improve the proliferation rate of preosteoblasts and lay a sufficient cell quantity foundation for bone cell generation; meanwhile, the activity of an osteogenic early differentiation key marker ALP is effectively up-regulated, and the differentiation process of preosteoblasts towards the osteoblast direction is accelerated; in addition, the expression quantity of osteogenesis-related regulatory protein calcium-sensitive receptors is remarkably increased, and the function improvement of cells to mature bone cells is further promoted.

This invention discloses a culture medium, preparation method, and culture method for the industrial-scale preparation of mesenchymal stem cells, belonging to the field of cell therapy technology. The culture medium comprises a basal medium, cell growth factors, cell proliferation promoters, a vitamin mixture, a nucleoside mixture, and an amino acid mixture; wherein the cell growth factors are selected from one or more of TGF-β, bFGF, VEGF, PDGF, EGF, and IGF. Through the synergistic effect of the composite nutrient system, this invention significantly improves the proliferation rate and cell viability of mesenchymal stem cells, maintains stem cell stemness, trilineage differentiation ability, and secretion levels of key cytokines (VEGF, HGF, TGF-β, IL-10, etc.); it can be stably and continuously passaged up to the 15th generation without abnormal changes in genetic material. This culture medium contains no animal-derived components, has high batch-to-batch stability, and is cost-controllable, making it suitable for GMP-level large-scale industrial preparation of mesenchymal stem cells from various sources such as umbilical cord, bone marrow, adipose tissue, and placenta.

The culture medium comprises a primary culture medium, a proliferation culture medium, a differential culture medium and a rooting culture medium, and the primary culture medium is used for inducing calluses from explants; the proliferation culture medium is used for culturing adventitious buds from the calluses; the differential culture medium is used for culturing true leaves from the adventitious buds; the rooting culture medium is used for enabling true leaves to root; the primary culture medium, the proliferation culture medium, the differential culture medium and the rooting culture medium are sterilized sterile culture mediums; by adopting the culture medium disclosed by the invention, the highest induction rate, the highest proliferation rate, the highest differentiation rate and the highest rooting rate are 95%, and the effect is remarkable.

This invention discloses a strain of Rhodotorula glutinis I7Y2 that promotes cell proliferation in a serum-free environment and its applications. Rhodotorula glutinis ( Rhodotorula mucilaginosa The yeast strain I7Y2 was deposited at the Guangdong Provincial Microbial Culture Collection Center (GDMCC) on March 13, 2026, with accession number GDMCC No: 67951. This invention has a good effect on promoting Vero cell proliferation, specifically manifested in: (1) the yeast involved in this invention can produce various active substances such as amino acids, polypeptides, sanshool, and inositol to meet the nutritional needs of cell growth; (2) it can effectively improve the viability and density of Vero cells in the basal culture medium; (3) it can effectively improve the proliferation rate and migration rate of Vero cells in the basal culture medium; and (4) it can effectively reduce the apoptosis rate of Vero cells and the expression of apoptosis-related genes in the basal culture medium. Therefore, Rhodotorula glutinis I7Y2 has great application potential in promoting cell proliferation, especially in serum-free culture products.

The invention relates to the technical field of collagen, in particular to expression and application of recombinant humanized collagen. The recombinant collagen comprises AXBYCZ (AXBYCZ); wherein X and Z are independently selected from 0 or 1, and Y is an integer greater than or equal to 1; x and Z are not 0 at the same time; the structural domain A is a collagen N-terminal peptide or a peptide fragment thereof, the structural domain B is a Gly-Xaa-Yaa structure, and the structural domain C is a collagen C-terminal peptide or a peptide fragment thereof; the recombinant collagen not only shows excellent cell compatibility including relatively high cell viability, cell adhesion rate and cell proliferation rate, but also has the effects of resisting inflammation and inhibiting melanogenesis, and can promote synthesis of type I collagen, type III collagen and elastin, so that the recombinant collagen can be used for preparing the anti-inflammatory and anti-melanogenesis collagen. The method can be widely applied to the technical fields of biological medicine, medical equipment, cosmetics and biological engineering.

The invention relates to the technical field of cells, and particularly discloses an amino acid culture medium for promoting synthesis of casein of dairy cow mammary cells and a preparation method. In the culture medium, the addition amount of lysine is 0.74 mmol / L, the addition amount of threonine is 0.22 mmol / L, and the addition amount of phenylalanine is 0.28 mmol / L. Tests prove that the culture medium under the condition of the application can obviously improve the relative proliferation rate and casein expression quantity of dairy cow mammary gland cells compared with a culture medium under 4 times of plasma concentration (optimal amino acid supply mode) of dairy cow. The method for promoting casein synthesis comprises the following steps: culturing cow mammary epithelial cells to P3 generation; when the P3 generation cells grow to 75-85% of the adherent area in a 75 cm < 3 > culture flask, transferring the P3 generation cells into a culture medium without lysine, threonine and phenylalanine, and starving for 16 hours; when the cells are hungry, transferring the cells into the culture medium prepared by the invention to be continuously cultured for 24 hours; and after culture is finished, measuring the relative proliferation rate and casein expression quantity of the cells.

The invention provides a method for enriching Tcm cells and application thereof, and particularly, the method comprises the step of performing first co-culture on a T cell population and stem cell exosomes. The exosome secreted by the stem cells contains a plurality of active proteins, RNA, lipids, metabolites and other molecules for keeping the dryness of the cells, the stem cell exosome and the T cell population are co-cultured, and the stem cell exosome can keep the rejuvenation of the T cells in the culture process and induce the differentiation of the T cells to the Tcm cells, so that the proportion of the Tcm cells is increased, and the cell proliferation rate is increased. High cell viability and proliferation capacity are maintained, and guarantee is provided for the function exertion of the T cells and related cell products thereof.

The present application belongs to the field of cell biology, specifically by adding recombinant human DFF45 protein, Z-VAD-FMK, Cyclosporin A, bFGF, N-Acetylcysteine, regulating the activity and effect of apoptosis-specific nuclease, reducing the apoptosis rate of umbilical cord mesenchymal stem cells, and also can improve the proliferation effect of umbilical cord mesenchymal stem cells, the proliferation rate of umbilical cord mesenchymal stem cells is increased by 17.53%, and the apoptosis rate of umbilical cord mesenchymal stem cells by ordinary conventional culture method is reduced from 14.32% to 9.81%, effectively solving the core problem of stem cell proliferation attenuation, apoptosis rate increase in the existing culture technology, maintaining the biological activity and quality stability of stem cells in the long-term subculture process, providing reliable technical support and experimental basis for the large-scale culture, in vitro expansion and subsequent clinical transformation application of umbilical cord mesenchymal stem cells.

The invention provides a visual biological scaffold capable of discharging percolate in a self-pumping manner and a preparation method of the visual biological scaffold. The visual biological scaffold comprises the following components in parts by weight: 5-20 parts of a hydrophobic high polymer material, 80-95 parts of a volatile solvent, 5-10 parts of a hydrophobic component, 3-15 parts of a hydrophilic high polymer material and 0.1-15 parts of an antibacterial agent. A hydrophilic and hydrophobic material is co-spun through electrostatic spinning, the material is endowed with certain hydrophilicity, the attachment and proliferation rate of cells can be increased, wound healing is promoted, a 3D network microchannel is formed, and the channel has a self-pumping drainage effect and can be used as a miniature infusion pump; the antibacterial substance is carried through electrostatic spinning, the antibacterial substance is physically wrapped in the fiber or dispersed in a fiber matrix or adsorbed on the surface of the fiber, and the antibacterial substance has a slow release effect, so that efficient and continuous sterilization is achieved, and wound infection is prevented; the device has the characteristic of visualization, and the wound healing degree can be observed; the electrostatic spinning in-situ forming technology is adopted, and the biological scaffold deposited on the wound has adhesiveness and does not need to be fixed additionally.

The present invention relates to: a method for mass-culturing mesenchymal stem cells, comprising a step of gradually increasing the P / V value of a bioreactor in a specific range; mesenchymal stem cells prepared using the method; and a use thereof. The mass-culturing method can increase the proliferation rate of stem cells while maintaining the characteristics thereof, and thus can be effectively used in related technical fields such as the treatment of autoimmune diseases, inflammatory diseases, or hair loss by using mesenchymal stem cells.

The invention discloses a tuna red meat immunity enhancing peptide and application thereof in enhancing immunity, and belongs to the technical field of biology. According to the invention, polypeptides with immunocompetence are extracted from tuna red meat, and the polypeptides comprise FLQGF and LAKFPDF. Experiments prove that the polypeptide prepared by the invention has no obvious toxic effect on cells, and can improve the proliferation rate and the phagocytic rate of macrophages and the release rate of NO to different degrees. An in-vitro immunomodulatory activity result shows that the LAKFPDF and the FLQGF can activate a TLR4 dependent NF-kB / MAPK signal channel, regulate and control the immune response of macrophages and play an immunomodulatory role. Research results of the invention provide a basis for high-value development and utilization of tuna red meat, and provide a new resource for preparation of immunopotentiation products.

This utility model belongs to the technical field of cell culture equipment, specifically relating to a mesenchymal stem cell hypoxia culture device. It includes a culture chamber, which consists of an outer door, an inner partition door, a chamber body, and a shelf. The chamber body has a hollow structure, and the shelf is installed inside the chamber. The inner partition door is connected to both sides of the front end of the chamber body and closes it. The outer door is connected to the chamber body and closes the inner partition door. The sides of the chamber body also have connecting holes that penetrate the cavity. A gas filter is installed on the pipe connected to the connecting holes. The bottom of the chamber body also has a flow guide mechanism for collecting condensate. This utility model's mesenchymal stem cell hypoxia culture device reduces the impact of opening and closing the door on the culture environment by using a partitioned cabinet door, while simultaneously disinfecting and filtering the gas entering the culture chamber, thereby improving the proliferation rate of stem cell culture.

The application provides a key preparation method of bird's nest peptide and bird's nest peptide for pregnant women, and the preparation method of the bird's nest peptide comprises the following steps: soaking dry bird's nest in pure water at 0-4 DEG C for 2 h at a material-to-liquid ratio of 1:10, beating and then drying to obtain soaked bird's nest; mixing the soaked bird's nest with pure water at a mass ratio of 1:15-20, sealing and then stewing at 121-123 DEG C for 12-15 min, repeating the stewing once after cooling to room temperature to obtain fresh stewed bird's nest; carrying out in-vitro digestion experiment on the fresh stewed bird's nest to simulate the digestion process of the fresh stewed bird's nest in the gastrointestinal tract, and obtaining digested bird's nest; centrifuging the digested bird's nest to obtain supernatant, treating the supernatant, and then carrying out protein sequencing; comparing the protein sequencing with an online database, screening out a peptide segment with high matching degree and a response value greater than 10 9 The bird's nest peptide can significantly improve the proliferation rate of nerve cells, and provides a cell basis for the development of the nervous system.