Method for inducing human skin fibroblasts to differentiate into adipocytes in vitro

A fibroblast, inducing differentiation technology, applied in biochemical equipment and methods, animal cells, vertebrate cells, etc., can solve the problem of inability to induce differentiation of human skin fibroblasts, inability to apply skin wound repair and scar repair, tissue source Restriction and other problems to achieve the effect of promoting differentiation into adipocytes

Active Publication Date: 2019-12-20
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The source of cells in this protocol is primary mouse embryonic fibroblasts (MEF), which is relatively cumbersome and limited in tissue sources; in addition, thi

Method used

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  • Method for inducing human skin fibroblasts to differentiate into adipocytes in vitro
  • Method for inducing human skin fibroblasts to differentiate into adipocytes in vitro
  • Method for inducing human skin fibroblasts to differentiate into adipocytes in vitro

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1 The method for inducing human skin fibroblasts to differentiate into adipocytes in vitro

[0045] In this example, the isolated primary human skin fibroblasts (passage 6) were taken as an example, and the differentiation mode of "6+2+8=16 days" was adopted to induce the differentiation of primary human skin fibroblasts into adipocytes in vitro . The specific method is as follows:

[0046] 1. Make about 10 5 HDF cells were subcultured into a 35mm culture dish, added with 4ml of basal medium, and cultured in an incubator for 2 days. Cell culture conditions are 37 °C, 5% CO 2 , the same below.

[0047] 2. When the confluence of the cells reaches 95%, replace the medium with 3ml induction differentiation medium ①, replace it every two days, and induce culture for 6 days.

[0048] 3. Replace the induction differentiation medium ① with 3ml induction differentiation medium ②, and culture for 2 days.

[0049] 4. Replace the differentiation-inducing medium ② wit...

Embodiment 2

[0086] Example 2 Induced Differentiation Medium ① Composition Optimization Experiment

[0087] The specific experimental steps of this example are the same as in Example 1, and the differentiation mode of "6+2+8=16 days" is also adopted to induce differentiation of primary human skin fibroblasts (6th passage). The difference is that the following adjustments were made to the composition of the induction differentiation medium ①:

[0088] Control group: differentiation induction medium ① containing 1 μM dexamethasone, 20 μg / mL insulin, 2 μM rosiglitazone, 0.5 mM 1-methyl-3-isobutylxanthine;

[0089] Dexamethasone-free group: differentiation induction medium ① containing 20 μg / mL insulin, 2 μM rosiglitazone, 0.5 mM 1-methyl-3-isobutylxanthine;

[0090] Insulin-free group: induction differentiation medium ① containing 1 μM dexamethasone, 2 μM rosiglitazone, 0.5 mM 1-methyl-3-isobutylxanthine;

[0091] No rosiglitazone group: differentiation induction medium ① containing 1 μM de...

Embodiment 3

[0097] Embodiment 3 The influence of generation number of human skin fibroblasts on the effect of inducing differentiation

[0098] The specific experimental steps of this example are the same as in Example 1, and the differentiation mode of "6+2+8=16 days" is also adopted to induce differentiation of primary human skin fibroblasts of different passages. The 3rd, 7th, 10th and 12th passage cells were selected for experiments.

[0099] The results of oil red staining are shown in Figure 7 , as shown in the figure, with the increase of the cell generation, the oil red staining gradually decreased, and the oil red staining was almost undetectable in the 12th passage cells.

[0100] For statistical results of oil red staining, see Figure 8 , as shown in the figure, with the increase of cell generation, the number of oil red stained cells gradually decreased, and the number of oil red stained cells in the 12th generation cells was almost zero.

[0101] For the test results of ...

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Abstract

The invention provides a method for inducing human skin fibroblasts to differentiate into adipocytes in vitro. The method comprises the following steps: A, carrying out in-vitro culture and passage onthe human skin fibroblasts in a basal culture medium, and carrying out induced differentiation when the cell confluence degree reaches 80-100%; and B, changing the basic culture medium in the step Ainto an induced differentiation culture medium (1), culturing for 6-10 days, and changing liquid once every two days; then, replacing the induced differentiation culture medium (1) with an induced differentiation culture medium (2), and culturing for 2-4 days; and finally, changing the induced differentiation culture medium (2) into a basic culture medium, culturing for 8-14 days, and changing liquid once every two days. According to the method, the problem that human skin fibroblasts are induced to be differentiated into adipocytes is successfully solved; the skin fibroblasts are induced to be differentiated into the adipocytes, so that scars left in skin during wound healing are reduced, and a new thought and a new therapy are provided for clinical wound repair, scar repair and the like.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a method for inducing human skin fibroblasts to differentiate into fat cells in vitro. Background technique [0002] At present, the in vitro induction and differentiation methods of adipocytes are basically the same, and they are all schemes to induce the differentiation of primary mouse embryonic fibroblasts into adipocytes. This protocol is currently a relatively mature adipocyte induction and differentiation protocol, which is widely used in the research of fat metabolism and adipocyte induction and differentiation. The source of cells in this protocol is primary mouse embryonic fibroblasts (MEF), which is relatively cumbersome and limited in tissue sources; in addition, this protocol cannot induce the differentiation of human skin fibroblasts into adipocytes, so it cannot be applied clinically Skin wound repair and scar repair etc. Contents of the invention [0003] The purp...

Claims

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Application Information

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IPC IPC(8): C12N5/077A61L27/38
CPCA61L27/3804A61L27/3895C12N5/0653C12N2500/30C12N2500/40C12N2500/84C12N2501/33C12N2506/1307
Inventor 张传茂王向阳
Owner PEKING UNIV
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