Objective　To evaluate the long-term therapeutic effects of autologous peripheral blood stem cell transplantation (auto-PBSCT) on the treatment of hematological and solid tumors. Methods　Fifty-one patients were recruited in this auto-PBSCT study, in which several potentially important parameters were studied including the optimal time for stem cell collection, the dose of stem cell reinfusion, the time of hematopoietic reconstitution, the disease free survival (DFS) and overall survival (OS), complications related to transplantation, and maintenance chemotherapy after auto-PBSCT. Results　After APBSCT, 3-year and 5-year survival rates of NHL were 83.3%; those of AML were 74.7%; those of MM were 37.9% and 19%; those of ALL were 40% and 0% respectively. Hematopoietic reconstitution was greatly promoted by granulocyte colony stimulating factor (G-CSF). The mean time for patients' neutrophil to recover up to >0.5×109/L after APBSCT was 11.14 days in the group of the patients receiving G-CSF in contrast to 17.6 days in the group receiving no G-CSF. The most common complications of transplantation were fever, liver dysfunction and hypokalaemia, which were curable. No death was due to transplantation related complications. Conclusion　Comparing with conventional chemotherapy, our study suggests that auto-PBSCT is a very important therapeutic option that can significantly improve the prognosis in the patients with hematological and solid tumors, especially in the patients with AML and NHL.

Plant-derived aromatic natural products have important medicinal value and can be made into pharmaceutical and healthcare products with antibacterial, anti-inflammatory, analgesic, anti-oxidative, insecticidal and anthelmintic, expectorant and cough suppressant, tranquilizer and antitumor effects. However, the low content of aromatic natural products in plants and the difficulty and high costs in extraction and purification hampered its large-scale production and application. Recent advances in synthetic biology and metabolic engineering have enabled the tailor-made production of aromatic natural products using engineered microbial cell factories. This review summarizes the categories, the synthetic pathways, the key enzymes and the synthetic biology strategies for production of aromatic natural products, and discusses the challenges and opportunities in this area.
Biological Products ; Metabolic Engineering ; Plants ; Synthetic Biology