AIM:To investigate the expression of interleukin (IL)-22 and its related proteins in biopsy specimens from patients with ulcerative colitis (UC) and UC-related carcinogenesis. METHODS:Biopsy specimens were obtained fr...AIM:To investigate the expression of interleukin (IL)-22 and its related proteins in biopsy specimens from patients with ulcerative colitis (UC) and UC-related carcinogenesis. METHODS:Biopsy specimens were obtained from patients with inactive (n = 10), mild-to-moderately active (n = 30), severely active (n = 34), initial (n = 30), and chronic UC (n = 44), as well as UC patients with dysplasia (n = 10). Specimens from patients without colonic abnormalities (n = 20) served as controls. Chronic colitis in experimental mice was induced by 2.5% dextran sodium sulfate. The expression levels of IL-22, IL-23, IL-22R1 and phosphorylated STAT3 (p- STAT3) were determined by immunohistochemistry. Bcl-2, cyclin D1 and survivin expression was detected by Western blotting. RESULTS:Patients with active UC had significantly more IL-22, IL-23, IL-22R1 and p-STAT3-positive cells than the patients with inactive UC and normal controls. Furthermore, IL-22 and related proteins were closely related to the severity of the colitis. The expression of IL-22 and IL-22R1 in the tissue of initial UC was stronger than in that of chronic UC, whereas the expression of p-STAT3 was significantly increased in chronic UC tissues. In dysplasia tissues, the expression level of IL-22 and related proteins was higher compared with controls. Mouse colitis model showed that expression of IL-22, IL-22R1 and IL-23 was increased with time, p-STAT3 and the downstream gene were also remarkably upregulated.CONCLUSION:IL-22/STAT3 signaling pathway may be related to UC and UC-induced carcinogenesis and IL-22 can be used as a biomarker in judging the severity of UC.展开更多
目的观察窄谱中波紫外线(NB-UVB)治疗寻常型银屑病的临床疗效并分析Th17细胞及相关细胞因子在治疗前后与银屑病皮损面积和严重程度(psoriasis area and severity index,PASI)评分的相关性。方法选取符合寻常型银屑病诊断标准的患者40例...目的观察窄谱中波紫外线(NB-UVB)治疗寻常型银屑病的临床疗效并分析Th17细胞及相关细胞因子在治疗前后与银屑病皮损面积和严重程度(psoriasis area and severity index,PASI)评分的相关性。方法选取符合寻常型银屑病诊断标准的患者40例作为治疗组,采用NB-UVB照射治疗,以PASI评分评价疗效。另随机选取30名健康者作为对照组。分别检测对照组和患者治疗前、后外周血Th17细胞百分比及血清中IL-17、IL-22及IL-23的水平,并分析其与PASI评分的相关性。结果外周血Th17细胞比较:患者治疗前Th17细胞百分比明显高于健康对照组,差异有统计学意义(P<0.05);光疗12周后,患者外周血Th17细胞百分比与光疗前相比显著下降,差异有统计学意义(P<0.05);此外,NB-UVB治疗前后患者Th17、IL-17、IL-22及IL-23水平与PASI评分均呈正相关(P<0.05)。结论 NB-UVB照射可明显下调外周血Th17细胞及IL-17、IL-22和IL-23的水平,可能是NB-UVB治疗银屑病的机制之一。NB-UVB治疗寻常型银屑病疗效好,安全性高。展开更多
AIM: To investigate the expression of Th22 cells and related cytokines in colorectal cancer(CRC) tissues, and the probably mechanism.METHODS: CRC tumor and paratumor tissues were collected to detect the expression lev...AIM: To investigate the expression of Th22 cells and related cytokines in colorectal cancer(CRC) tissues, and the probably mechanism.METHODS: CRC tumor and paratumor tissues were collected to detect the expression levels of Th22 cells and of related cytokines by immunohistochemistry, flow cytometry and real-time quantitative polymerase chain reaction(RT-q PCR).Interleukin(IL)-22 alone or with a STAT3 inhibitor was co-cultured with RKO cells in vitro to study the effects of IL-22 on colon cancer cells.IL-22 alone or with a STAT3 inhibitor was injected into a BALB/c nude mouse model with subcutaneously transplanted RKO cells to study the effects of IL-22 on colon cancer growth.RESULTS: The percentage of Th22 cells in the CD4+ T subset was significantly higher in tumor tissues compared with that in paratumor tissues(1.47% ± 0.083% vs 1.23% ± 0.077%, P < 0.05) as determined by flow cytometry.RT-qP CR analysis revealed that the m RNA expression levels of IL-22, aryl hydrocarbon receptor, CCL20 and CCL22 were significantly higher in tumor tissues compared with those in paratumor tissues.CCL27 mR NA also displayed a higher expression level in tumor tissues compared with that in paratumor tissues; however, these levels were not significantly different(2.58 ± 0.93 vs 2.30 ± 0.78, P > 0.05).IL-22 enhanced colon cancer cell proliferation in vitro and displayed anti-apoptotic effects; these effects were blocked by adding a STAT3 inhibitor.IL-22 promoted tumor growth in BALB/c nude mice; however, this effect was reversed by adding a STAT3 inhibitor.CONCLUSION: Th22 cells that accumulate in CRC may be associated with the chemotactic effect of the tumor microenvironment.IL-22 is associated with CRC development, most likely via STAT3 activation.展开更多
AIM: To investigate the potential protective effect of exogenous recombinant interleukin-22(r IL-22) on L-arginine-induced acute severe pancreatitis(SAP)-associated lung injury and the possible signaling pathway invol...AIM: To investigate the potential protective effect of exogenous recombinant interleukin-22(r IL-22) on L-arginine-induced acute severe pancreatitis(SAP)-associated lung injury and the possible signaling pathway involved.METHODS: Balb/c mice were injected intraperitoneally with L-arginine to induce SAP. Recombinant mouse IL-22 was then administered subcutaneously to mice. Serum amylase levels and myeloperoxidase(MPO) activity in the lung tissue were measured after the L-arginine administration. Histopathology of the pancreas and lung was evaluated by hematoxylin and eosin(HE) staining. Expression of B cell lymphoma/leukemia-2(Bcl-2), Bcl-x L and IL-22RA1 m RNAs in the lung tissue was detected by real-time PCR. Expression and phosphorylation of STAT3 were analyzed by Western blot. RESULTS: Serum amylase levels and MPO activity in the lung tissue in the SAP group were significantly higher than those in the normal control group(P < 0.05). In addition, the animals in the SAP group showed significant pancreatic and lung injuries. The expression of Bcl-2 and Bcl-x L m RNAs in the SAP group was decreased markedly, while the IL-22RA1 m RNA expression was increased significantly relative to the normal control group(P < 0.05). Pretreatment with PBS did not significantly affect the serum amylase levels, MPO activity or expression of Bcl-2, Bcl-x L or IL-22RA1 m RNA(P > 0.05). Moreover, no significant differences in the degrees of pancreatic and lung injuries were observed between the PBS and SAP groups. However, the serum amylase levels and lung tissue MPO activity in the r IL-22 group were significantly lower than those in the SAP group(P < 0.05), and the injuries in the pancreas and lung were also improved. Compared with the PBS group, r IL-22 stimulated the expression of Bcl-2, Bcl-x L and IL-22RA1 m RNAs in the lung(P < 0.05). In addition, the ratio of p-STAT3 to STAT3 protein in the r IL-22 group was significantly higher than that in the PBS group(P < 0.05).CONCLUSION: Exogenous recombinant IL-22 protects mice against 展开更多
基金Supported by National Natural Science Foundation of China,No.81072692Natural Science Foundation of Jiangsu Higher Education Institutions of China,No.10KJB320007
文摘AIM:To investigate the expression of interleukin (IL)-22 and its related proteins in biopsy specimens from patients with ulcerative colitis (UC) and UC-related carcinogenesis. METHODS:Biopsy specimens were obtained from patients with inactive (n = 10), mild-to-moderately active (n = 30), severely active (n = 34), initial (n = 30), and chronic UC (n = 44), as well as UC patients with dysplasia (n = 10). Specimens from patients without colonic abnormalities (n = 20) served as controls. Chronic colitis in experimental mice was induced by 2.5% dextran sodium sulfate. The expression levels of IL-22, IL-23, IL-22R1 and phosphorylated STAT3 (p- STAT3) were determined by immunohistochemistry. Bcl-2, cyclin D1 and survivin expression was detected by Western blotting. RESULTS:Patients with active UC had significantly more IL-22, IL-23, IL-22R1 and p-STAT3-positive cells than the patients with inactive UC and normal controls. Furthermore, IL-22 and related proteins were closely related to the severity of the colitis. The expression of IL-22 and IL-22R1 in the tissue of initial UC was stronger than in that of chronic UC, whereas the expression of p-STAT3 was significantly increased in chronic UC tissues. In dysplasia tissues, the expression level of IL-22 and related proteins was higher compared with controls. Mouse colitis model showed that expression of IL-22, IL-22R1 and IL-23 was increased with time, p-STAT3 and the downstream gene were also remarkably upregulated.CONCLUSION:IL-22/STAT3 signaling pathway may be related to UC and UC-induced carcinogenesis and IL-22 can be used as a biomarker in judging the severity of UC.
文摘目的观察窄谱中波紫外线(NB-UVB)治疗寻常型银屑病的临床疗效并分析Th17细胞及相关细胞因子在治疗前后与银屑病皮损面积和严重程度(psoriasis area and severity index,PASI)评分的相关性。方法选取符合寻常型银屑病诊断标准的患者40例作为治疗组,采用NB-UVB照射治疗,以PASI评分评价疗效。另随机选取30名健康者作为对照组。分别检测对照组和患者治疗前、后外周血Th17细胞百分比及血清中IL-17、IL-22及IL-23的水平,并分析其与PASI评分的相关性。结果外周血Th17细胞比较:患者治疗前Th17细胞百分比明显高于健康对照组,差异有统计学意义(P<0.05);光疗12周后,患者外周血Th17细胞百分比与光疗前相比显著下降,差异有统计学意义(P<0.05);此外,NB-UVB治疗前后患者Th17、IL-17、IL-22及IL-23水平与PASI评分均呈正相关(P<0.05)。结论 NB-UVB照射可明显下调外周血Th17细胞及IL-17、IL-22和IL-23的水平,可能是NB-UVB治疗银屑病的机制之一。NB-UVB治疗寻常型银屑病疗效好,安全性高。
基金Supported by National Natural Science Foundation of China,No.81260316 and No.81260335
文摘AIM: To investigate the expression of Th22 cells and related cytokines in colorectal cancer(CRC) tissues, and the probably mechanism.METHODS: CRC tumor and paratumor tissues were collected to detect the expression levels of Th22 cells and of related cytokines by immunohistochemistry, flow cytometry and real-time quantitative polymerase chain reaction(RT-q PCR).Interleukin(IL)-22 alone or with a STAT3 inhibitor was co-cultured with RKO cells in vitro to study the effects of IL-22 on colon cancer cells.IL-22 alone or with a STAT3 inhibitor was injected into a BALB/c nude mouse model with subcutaneously transplanted RKO cells to study the effects of IL-22 on colon cancer growth.RESULTS: The percentage of Th22 cells in the CD4+ T subset was significantly higher in tumor tissues compared with that in paratumor tissues(1.47% ± 0.083% vs 1.23% ± 0.077%, P < 0.05) as determined by flow cytometry.RT-qP CR analysis revealed that the m RNA expression levels of IL-22, aryl hydrocarbon receptor, CCL20 and CCL22 were significantly higher in tumor tissues compared with those in paratumor tissues.CCL27 mR NA also displayed a higher expression level in tumor tissues compared with that in paratumor tissues; however, these levels were not significantly different(2.58 ± 0.93 vs 2.30 ± 0.78, P > 0.05).IL-22 enhanced colon cancer cell proliferation in vitro and displayed anti-apoptotic effects; these effects were blocked by adding a STAT3 inhibitor.IL-22 promoted tumor growth in BALB/c nude mice; however, this effect was reversed by adding a STAT3 inhibitor.CONCLUSION: Th22 cells that accumulate in CRC may be associated with the chemotactic effect of the tumor microenvironment.IL-22 is associated with CRC development, most likely via STAT3 activation.
基金Supported by the Shandong Provincial Science and TechnologyCommittee of China,No.2014GGH218034
文摘AIM: To investigate the potential protective effect of exogenous recombinant interleukin-22(r IL-22) on L-arginine-induced acute severe pancreatitis(SAP)-associated lung injury and the possible signaling pathway involved.METHODS: Balb/c mice were injected intraperitoneally with L-arginine to induce SAP. Recombinant mouse IL-22 was then administered subcutaneously to mice. Serum amylase levels and myeloperoxidase(MPO) activity in the lung tissue were measured after the L-arginine administration. Histopathology of the pancreas and lung was evaluated by hematoxylin and eosin(HE) staining. Expression of B cell lymphoma/leukemia-2(Bcl-2), Bcl-x L and IL-22RA1 m RNAs in the lung tissue was detected by real-time PCR. Expression and phosphorylation of STAT3 were analyzed by Western blot. RESULTS: Serum amylase levels and MPO activity in the lung tissue in the SAP group were significantly higher than those in the normal control group(P < 0.05). In addition, the animals in the SAP group showed significant pancreatic and lung injuries. The expression of Bcl-2 and Bcl-x L m RNAs in the SAP group was decreased markedly, while the IL-22RA1 m RNA expression was increased significantly relative to the normal control group(P < 0.05). Pretreatment with PBS did not significantly affect the serum amylase levels, MPO activity or expression of Bcl-2, Bcl-x L or IL-22RA1 m RNA(P > 0.05). Moreover, no significant differences in the degrees of pancreatic and lung injuries were observed between the PBS and SAP groups. However, the serum amylase levels and lung tissue MPO activity in the r IL-22 group were significantly lower than those in the SAP group(P < 0.05), and the injuries in the pancreas and lung were also improved. Compared with the PBS group, r IL-22 stimulated the expression of Bcl-2, Bcl-x L and IL-22RA1 m RNAs in the lung(P < 0.05). In addition, the ratio of p-STAT3 to STAT3 protein in the r IL-22 group was significantly higher than that in the PBS group(P < 0.05).CONCLUSION: Exogenous recombinant IL-22 protects mice against
