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- 저자 : Da-Qi Fu (검색결과 2 건)
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Proteomic Profiling of Serum from Stage I Lung Squamous Cell Carcinoma Patients
Li, Xin-Ju,Wu, Qi-Fei,He, Da-Lin,Fu, Jun-Ke,Jin, Xin Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.4
Objectives: This study employed proteomic profiling to identify specific tumor markers that might improve early diagnosis of lung squamous cell carcinoma. Methods: Serum samples were isolated from 30 patients with stage I lung squamous cell carcinoma and 30 age-and gender-matched healthy controls, and proteomic profiles were obtained by matrix-assisted laser desorption ionization time of flight mass spectrometry. Results: Three highly expressed potential tumor markers were identified in the sera of stage I lung squamous cell carcinoma patients, with molecular weights of 3261.69, 3192.07, and 2556.92 Da. One protein peak with molecular weight 3261.69 Da was chosen as the candidate biomarker and identified as a fibrinogen alpha chain through a search of the IPI, NCBI or SWISS-PROT protein databases. Conclusion: As a potential tumor biomarker, fibrinogen alpha chain may be applicable for the early diagnosis and prognosis of lung squamous cell carcinoma patients.
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Enhancement of Virus-induced Gene Silencing in Tomato by Low Temperature and Low Humidity
Da-Qi Fu,Ben-Zhong Zhu,Hong-Liang Zhu,Hong-Xing Zhang,Yuan-Hong Xie,Wei-Bo Jiang,Xiao-Dan Zhao,Yun-Bo Luo 한국분자세포생물학회 2006 Molecules and cells Vol.21 No.1
Virus-induced gene silencing (VIGS) is an attractive reverse-genetics tool for studying gene function in plants. We showed that silencing of a phytoene desaturase (PDS) gene is maintained throughout TRV-PDSinoculated tomato plants as well as in their flowers and fruit and is enhanced by low temperature (15°C) and low humidity (30%). RT-PCR analysis of the PDS gene revealed a dramatic reduction in the level of PDS mRNA in leaves, flowers and fruits. Silencing of PDS results in the accumulation of phytoene, the desaturase substrate. In addition, the content of chlorophyll a, chlorophyll b and total chlorophyll in the leaves of PDS-silenced plants was reduced by more than 90%. We also silenced the LeEIN2 gene by infecting seedlings, and this suppressed fruit ripenning. We conclude that this VIGS approach should facilitate large-scale functional analysis of genes involved in the development and ripening of tomato.
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