中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (19): 4860-4866.doi: 10.12307/2026.782

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

来源于前列腺周围脂肪的脂肪干细胞膜片培养与鉴定

周术奎,刘金鹏,高文隆,杨盛柯,廖  洪,吴  毅,李  曾   

  1. 四川省肿瘤医院·研究所,四川省肿瘤临床医学研究中心,四川省癌症防治中心,电子科技大学附属肿瘤医院泌尿外科,四川省成都市  610041
  • 收稿日期:2025-09-10 接受日期:2025-11-11 出版日期:2026-07-08 发布日期:2026-02-13
  • 通讯作者: 李曾,硕士,副主任医师,副研究员,四川省肿瘤医院·研究所,四川省肿瘤临床医学研究中心,四川省癌症防治中心,电子科技大学附属肿瘤医院泌尿外科,四川省成都市 610041
  • 作者简介:周术奎,男,1985年生,四川省成都市人,汉族,2017年上海交通大学毕业,博士,主治医师,副研究员,主要从事泌尿系肿瘤和修复重建的临床与基础研究。
  • 基金资助:
    四川省自然科学基金面上项目(2024NSFSC0699),项目负责人:周术奎

Culture and identification of adipose-derived stem cells from periprostatic adipose tissue

Zhou Shukui, Liu Jinpeng, Gao Wenlong, Yang Shengke, Liao Hong, Wu Yi, Li Zeng   

  1. Department of Urology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu 610041, Sichuan Province, China
  • Received:2025-09-10 Accepted:2025-11-11 Online:2026-07-08 Published:2026-02-13
  • Contact: Li Zeng, MS, Associate chief physician, Associate researcher, Department of Urology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu 610041, Sichuan Province, China
  • About author:Zhou Shukui, MD, Attending physician, Associate researcher, Department of Urology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu 610041, Sichuan Province, China
  • Supported by:
    Natural Science Foundation of Sichuan Province (General Program), No. 2024NSFSC0699 (to ZSK)

摘要:

文题释义:

前列腺周围脂肪组织:包绕前列腺周围的脂肪库,前列腺周围脂肪组织通过旁分泌效应或细胞间相互作用调节前列腺微环境。
细胞膜片:通过连续培养,刺激种子细胞分泌细胞外基质,形成一种复杂的三维结构来高度模拟自然组织,由于未经过胰酶消化,能完整地保留细胞外基质和细胞间连接,细胞损伤小,细胞凋亡率低。

摘要
背景:前列腺周围脂肪组织是最接近前列腺的白色内脏脂肪组织,属于前列腺癌肿瘤微环境的一部分,在前列腺癌发生和进展中起关键作用。
目的:观察前列腺周围脂肪组织来源脂肪干细胞形成三维细胞膜片的能力。
方法:选取拟行前列腺癌根治术患者,术中切取前列腺周围脂肪组织,采用酶消化联合机械切割方式制成脂肪干细胞悬液,CCK-8试剂盒检测脂肪干细胞增殖情况,流式细胞仪检测干细胞相关抗原CD34/CD44/CD45/CD90/CD105表达,采用成骨/成脂/成软骨诱导分化试剂盒检测干细胞多向分化潜能。将前列腺周围脂肪组织来源脂肪干细胞用含100 μg/mL维生素C、体积分数10%胎牛血清的低糖DMEM培养液连续培养3周构建细胞膜片,进行组织学分析和扫描电镜观察。
结果与结论:①前列腺周围脂肪组织来源脂肪干细胞呈长纺锤体或长梭形,同向生长,形态较为一致;原代培养9-10 d可达到95%细胞融合,细胞活性良好,连续传代到第15代时仍未见明显细胞衰老迹象;②流式细胞检测CD44、CD90和CD105表达率为98.24%,84.99%和89.14%;CD34和CD45表达率为0.64%,1.02%;经成骨/成脂/成软骨诱导3周后,前列腺周围脂肪组织来源脂肪干细胞能多向分化诱导为成骨细胞、成脂肪细胞和成软骨细胞;③前列腺周围脂肪组织来源脂肪干细胞经连续培养3周即可形成三维细胞膜片组织,表面光整,质地均匀,其中纤连蛋白和Ⅰ型胶原蛋白等细胞外基质含量丰富;扫描电镜观察结果显示膜片表面平整,长梭形细胞排列方向一致,细胞间大量胞外基质沉积。该实验从前列腺癌患者前列腺周围脂肪组织中原代分离脂肪干细胞,通过维生素C刺激细胞外基质分泌,连续培养3周成功构建细胞三维膜片。

关键词: 前列腺癌, 前列腺周围脂肪组织, 脂肪干细胞, 细胞外基质, 细胞膜片

Abstract: BACKGROUND: Periprostatic adipose tissue is the white visceral adipose tissue that closest to the prostate, which is part of the prostate cancer microenvironment and plays a key role in the occurrence and progression of prostate cancer.
OBJECTIVE: To investigate the ability of adipose-derived stem cells derived from periprostatic adipose tissue to form three-dimensional cell sheets.
METHODS: Periprostatic adipose tissue was harvested from patients undergoing radical prostatectomy. Adipose-derived stem cell suspensions were prepared using a combination of enzymatic digestion and mechanical dissection. Adipose-derived stem cell proliferation was assessed using a CCK-8 assay. Expression of stem cell-associated antigens CD34/CD44/CD45/CD90/CD105 was determined by flow cytometry. Multidirectional differentiation potential of the stem cells was assessed using osteogenic/adipogenic/chondrogenic differentiation assays. Adipose-derived stem cells were cultured for three weeks in low-glucose DMEM supplemented with 100 μg/mL vitamin C and 10% fetal bovine serum to form cell sheets. Histological analysis and scanning electron microscopy were performed. 
RESULTS AND CONCLUSION: (1) The cell morphology of periprostatic adipose-derived stem cells was long spindles or long spindles, grew in the same direction and relatively consistent. After 9-10 days of primary culture, 95% of the cells were fused, and the cell activity was good. No obvious signs of cell senescence were seen even when the cells were passed through passage 15. (2) The expression rates of CD44, CD90, and CD105 were 98.24%, 84.99% and 89.14%, respectively. The expression rates of CD34 and CD45 were 0.64% and 1.02%. After 3 weeks of osteogenic/lipogenic/chondrogenic induction, periprostatic adipose tissue-adipose-derived stem cells could be induced into osteoblast, adipoblast, and chondroblast in multiple directions. (3) Continuous culture of periprostatic adipose tissue-adipose-derived stem cells for 3 weeks could form three-dimensional cell sheet tissue. The surface of the sheet was smooth with uniform texture, and it was rich in extracellular matrix, such as fibronectin and type 1 collagen. The results of scanning electron microscopy observation showed that the surface of the cell sheet was smooth and the long spindle-shaped cells were arranged in a consistent direction, with a large amount of extracellular matrix deposited between cells. In this study, adipose-derived stem cells were successfully isolated from prostate cancer patient derived periprostatic adipose tissue. Vitamin C was used to stimulate extracellular matrix secretion, and three-dimensional cell membranes were successfully constructed after three weeks of continuous culture.

Key words: prostate cancer, periprostatic adipose tissue, adipose-derived stem cells, extracellular matrix, cell sheet

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