Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
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Question: To examine the expression of Twist1 in cervical cancer and to explore its biological function in the progression of cervical cancer.\u2029', 'The expressions of Twist1 in 32 cervical cancers and matched normal tissues were examined by immunohistochemistry (IHC). Cell invasive ability and the expression of invasion-related genes were determined in RNAi-based Twist1-silencing HeLa cells. The relationship between Twist1 and microRNA-33a (miR-33a) in cervical cancer was studied by Pearson correlation analysis, and the roles of miR-33a in regulation of Twist1 and cell invasiveness were studied.\u2029', 'The positive expression rate of Twist1 was 75.0% (24/32) and 21.9% (7/32) in the cervical cancer and the matched normal tissues, respectively, with significant difference between them (P<0.05). Twist1 shRNA significantly decreased the invasiveness of HeLa cells (P<0.05). Compared with the matched normal tissues, the expression of miR-33a was increased in the cervical cancer tissues, which was negatively correlated with Twist1 (r=-0.661, P<0.05). Overexpression of miR-33a could significantly suppress Twist1 expression as well as cell invasiveness (P<0.05).\u2029

Answer: Does [ MicroRNA-33a regulate the invasion of cervical cancer cells via targeting Twist1 ]?


Question: Dihydrofolate reductase (DHFR) and thymidylate synthase (TS) are crucial enzymes in DNA synthesis. In alveolata both enzymes are expressed as one bifunctional enzyme.', "Loss of this essential enzyme activities after successful allelic assortment of knock out alleles yields an auxotrophic marker in ciliates. Here the cloning, characterisation and functional analysis of Tetrahymena thermophila's DHFR-TS is presented. A first aspect of the presented work relates to destruction of DHFR-TS enzyme function in an alveolate thereby causing an auxotrophy for thymidine. A second aspect is to knock in an expression cassette encoding for a foreign gene with subsequent expression of the target protein.

Answer: Does the bifunctional dihydrofolate reductase thymidylate synthase of Tetrahymena thermophila provide a tool for molecular and biotechnology applications?


Question: Retrospective evaluation of the long-term health-related quality of life (HRQoL) among survivors after non-small-cell lung cancer (NSCLC) surgery.', 'A total of 586 patients underwent surgery for NSCLC in Helsinki University Central Hospital between January 2000 and June 2009. Two validated quality-of-life questionnaires, the 15D and the EORTC QLQ-C30 with its lung cancer-specific module, QLQ-LC13, were sent to the 276 patients alive in June 2011. Response rate was 83.3%. Results of the 15D were compared with those of an age- and gender-standardized general population.', 'Median follow-up was 5 years. Compared with a general population, our patients had a significantly lower 15D total score, representing their total HRQoL and scores for dimensions of mobility, breathing, usual activities, depression, distress, and vitality. The patients, however, scored significantly higher on vision, hearing, and mental function.

Answer:
Do long-term lung cancer survivors have permanently decreased quality of life after surgery?