摘要
目的模拟微重力培养甲状旁腺细胞,观察细胞形态及细胞分泌功能,以探讨甲状旁腺细胞更为优良的培养方法。方法雄性Wistar大鼠,37只,体质量150~200 g。1%戊巴比妥钠(50 mg/kg)腹腔注射麻醉。手术切取甲状旁腺并经病理学证实。用胶原酶Ⅱ消化获得甲状旁腺细胞后,按培养条件不同分为普通培养组(单纯甲状旁腺细胞静置培养)、聚羟基乙酸(polyglycolic acid,PGA)支架培养组(甲状旁腺细胞接种在PGA支架上静置培养)、微重力培养组(甲状旁腺细胞和PGA支架在模拟微重力环境中共培养)3组。于细胞培养第1、3、5、7天时测量各组细胞培养液中甲状旁腺激素(parathyroid hormone,PTH)的浓度,于倒置相差显微镜下观察甲状旁腺细胞的生长形态、吖啶橙/碘化丙啶染色细胞并计算细胞存活率。结果普通培养组的细胞在第7天时大部分细胞形态良好,部分细胞团中心出现坏死灶。PGA支架培养组在第7天时支架上的细胞大部分沿PGA纤维纵轴方向向两极伸展,相邻支架被细胞外基质连接。微重力培养组的细胞在培养第7天时细胞仍呈圆形,相互聚集成团,并逐渐增大;培养液中的PTH浓度也明显高于PGA支架培养组和普通培养组(P<0.05),且存活率也明显高于另外两组(P<0.05)。结论模拟微重力培养甲状旁腺细胞,能使细胞保持良好形态,并显著提高细胞活力及存活率,从而为细胞输注移植治疗甲状旁腺功能减退症提供优良的供体细胞,PGA支架可以作为甲状旁腺细胞培养的良好载体。
Objective To culture primary parathyroid cells by mean of simulated microgravity, observe their basic morphological characteristics, study survival rate and secretory function of parathyroid cells, and explore more excellent culture mean of parathyroid cells. Methods There were 37 male Wistar rats, the body weight was 150-200 g. The rat was intraperitoneally injected with 1% pentobarbital sodium （50 mg/kg）. The parathyroid glands were surgically excised and identified pathologically. The parathyroid gland cells were got and digested them with coUagenase Ⅱ, which were divided into three groups： conventional culture group （simple parathyroid cells were cultured）, polyglycolic acid （PGA） scaffold culture group （the parathyroid cells were cultured on the PGA scaffold）, and simulated microgravity culture group （the parathyroid cells and PGA scaffolds were cultured in simulated microgravity environment）. The parathyroid cells were cultured for 1, 3, 5 or 7 days in different culture conditions, then the parathyroid hormone （PTH） was measured, morphological characteristics of the parathyroid cell was observed under phase contrast microscope, survival rate of the parathyroid cells was calculated by acridine orange/propidium iodide staining. Results The parathyroid cell morphologies of most cells were well and center of part of cell mass was necrosis on day 7 in the conventional culture group. The most parathyroid cells were spreading toward the poles along the PGA cell scaffold in the longitudinal direction and the adjacent stents were connected by extracellular matrix on day 7 in the PGA scaffold culture group. The parathyroid cells cultured under the simulated microgravity were got round and formed clusters on day 7 in the simulated microgravity culture group. Compared with the other two groups on day 7, the PTH and the survival rate of the parathyroid cells were significantly higher in the simulated microgravity culture group （P〈0.05）. Conclusions Parathyroid cells cultured in simulated microgravity environment could maintain better morphology, survival rate is higher, and secretory function is better. Therefore, parathyroid cells cultured in simulated microgravity could be used as good donor cell for treatment of hypoparathyroidism. PGA scaffold could be used as a good carrier for culture of parathyroid cell.
出处
《中国普外基础与临床杂志》
CAS
2017年第2期179-184,共6页
Chinese Journal of Bases and Clinics In General Surgery
基金
哈尔滨市科技创新人才项目(编号:2013RFXYJ008)
