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Mol Carcinog ; 63(5): 938-950, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38353288


Pancreatic ductal adenocarcinoma (PDAC) is a highly invasive cancer with a poor prognosis and a 5-year survival rate of less than 11%. As a member of the CAP superfamily of proteins, the role of peptidase inhibitor 16 (Pi16) in tumor progression is still unclear. Immunohistochemistry and quantitative RT-PCR methods were used to detect the expression levels of Pi16 protein and mRNA in PDAC patients. CRISPR/Cas9 technology was used to knock out the expression of Pi16 in PDAC cell lines. In vivo and in vitro experiments were used to verify the effect of Pi16 on PDAC proliferation ability. By RNA sequencing, we found that oligoadenylate synthetase L (OASL) can serve as a potential downstream target of Pi16. The expression of Pi16 was higher in PDAC tissues than in matched adjacent tissues. High expression of Pi16 was associated with PDAC progression and poor prognosis. Overexpression of Pi16 could promote the proliferation of PDAC cells in vitro and in vivo. Bioinformatics analysis and coimmunoprecipitation assays showed that Pi16 could bind to OASL. Moreover, the functional recovery test confirmed that Pi16 could promote the proliferation of PDAC via OASL. Our present study demonstrates that Pi16 might participate in the occurrence and development of PDAC by regulating cell proliferation by binding to OASL, indicating that Pi16 might be a promising novel therapeutic target for PDAC.

2',5'-Oligoadenilato Sintetase , Nucleotídeos de Adenina , Carcinoma Ductal Pancreático , Glicoproteínas , Neoplasias Pancreáticas , Humanos , Carcinoma Ductal Pancreático/genética , Carcinoma Ductal Pancreático/patologia , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas/patologia , Glicoproteínas/metabolismo , Proteínas de Transporte/metabolismo , 2',5'-Oligoadenilato Sintetase/metabolismo
Tumour Biol ; 36(9): 7121-31, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25877754


Newcastle disease virus (NDV), an avian paramyxovirus, possesses the ability to kill tumor cells. Here, we report the effects of NDV strain D90, which was isolated in China, against oral squamous cell carcinoma (OSCC) cells. In this study, we showed that the cell death induced by D90 was apoptotic. Furthermore, the apoptosis induced by D90 was dependent on the mitochondrial pathway, and the death receptor pathway may be not involved. Bax and Bcl-2 also played a role in the apoptosis induced by D90. Lymph node metastasis is a serious problem for oral cancer; we therefore evaluated the impact of D90 on the migration and invasion of OSCC cells. NDV D90 affected microtubules and microfilaments to inhibit the motility of OSCC prior to apoptosis. The effects of D90 on the migration and invasion rates of OSCC cells were evaluated by migration and invasion assays. Subsequently, the changes in sp1, RECK, MMP-2, and MMP-9 induced by a low concentration of D90 were detected by western blot and gelatin zymography. D90 significantly inhibited the invasion and metastasis of OSCC cells by decreasing the expression of sp1 and increasing the expression of RECK to suppress the expression and activity of MMP-2 and MMP-9.

Carcinoma de Células Escamosas/terapia , Proteínas Ligadas por GPI/biossíntese , Metaloproteinase 2 da Matriz/biossíntese , Metaloproteinase 9 da Matriz/biossíntese , Neoplasias Bucais/terapia , Vírus da Doença de Newcastle/genética , Animais , Apoptose/genética , Carcinoma de Células Escamosas/genética , Carcinoma de Células Escamosas/patologia , Linhagem Celular Tumoral , Movimento Celular/genética , Proteínas Ligadas por GPI/genética , Humanos , Metástase Linfática , Metaloproteinase 2 da Matriz/genética , Metaloproteinase 9 da Matriz/genética , Mitocôndrias/genética , Mitocôndrias/metabolismo , Neoplasias Bucais/genética , Neoplasias Bucais/patologia , Invasividade Neoplásica/genética , Invasividade Neoplásica/patologia , Terapia Viral Oncolítica , Fator de Transcrição Sp1/biossíntese