[Purpose] To summarize SHEN Yiping's clinical experience and academic views about treatment of elderly acute myeloid leukemia(AML) patients with traditional Chinese medicine(TCM).[Method] By means of learning form Professor SHEN in the clinic,collect cases and analyze them,and then conclude his clinical thought and dialectical methods,further summarize his clinical experience and academic views.[Result] Professor SHEN Yiping believes that these patients have deficiency of the lung,spleen and kidney,easily form the unhealthy environmental influences with shapes such as phlegm,damoeness,blood stasis,meeting with invaded by the invasion,causing the results of the happening of the disease.The functions of Zang-fu are damaged after chemotherapy,with the presentation of deficiency of qi and yin.Professor SHEN thinks that the treatment should be tonifying lung,spleen and kidney,dispelling the pathological products such as phlegm,dampness,blood stasis,eliminating the invasion at the same time.For those patients who are in remission,we should use the therapy of purging fire and maintaining yin,in order to remove leukemia residual of lesions thoroughly.Professor SHEN uses the anticancer drugs which could clear away heat and toxic frequently in order to depress the proliferation of the leukemia cells.[Conclusion]Professor SHEN is well-versed in the learning of both TCM and modern medicine,abundant clinical experience and rigorous dialectical methods,skilled in using TCM to treat elderly AML patients.He also has peculiar methods for the treatment of patients with recurrence of leukemia.His clinical experience and academic thoughts are worth learning and communication for us.

ObjectiveTo observe the apoptotic effect of cardamonin on K562 cells and its relationship with the expressions of PTEN, p-Akt, NF-κB and Bcl-2.Methods K562 cells were treated with cardamonin for 48 h, and the following tests were performed:(1) The cell morphology was observed by light microscopy.(2)IC50 of the K562 cells was dtermined by MTT test.(3) The apoptosis rate was detected by flow cytometry.(4) The expressions of Bcl-2 and Bax mRNA were detected a by RT-PCR.(5) The expressions of PTEN, p-Akt, NF-κB and Bcl-2 proteins were detected by Western blot.Results Obvious apoptosis was observed in the K562 cells after treated with cardamonin for 48 h.MTT assay indicated that the proliferation of K562 cells was obviously inhibited in a dose-and time-dependent manner. Comparing with the blank group, the early apoptosis rate and expression of Bax mRNA were significantly increased.At the same time, the expression of Bcl-2 mRNA was significantly decreased.All of them presented a dose-dependent manner. The expression of PTEN obviously increased with the increasing dose of cardamonin and the expressions of p-Akt, NF-κB and Bcl-2 were decreased.Conclusions Cardamonin promotes the apoptosis in K562 cells in a dose-dependent manner by increasing the expression of PTEN and decreasing the expressions of p-Akt, NF-κB, and Bcl-2.

OBJECTIVETo investigate the effects of angular pyranocoumarin (±) -4'-O- acetyl-3'-Oangeloyl- cis- khellactone (APC) extracted from peucedanum praeruptoruon on the proliferation and apoptosis of U266 cells, and to explore its related mechanism.

METHODSAPC was extracted by petroleum ether technique, and its purity was tested by high performance liquid chromatography, and its chemical structure was identified by magnetic resonance spectroscopy. U266 cells were treated with APC in various concentrations (0, 10, 20, 30, 40 μg/ml）for different durations（24 and 48 h). The inhibitive effect of APC on cell growth was detected by CCK-8 method. After U266 cells were incubated with APC（0, 10, 20, 30, 40 μg/ml）for 24 h, the apoptosis of cells were observed by flow cytometry stained with Annexin Ⅴ/PI and Hochest33342; the expression levels of caspase-3, 8, ERK, p-ERK, AKT and p-AKT protein were assayed by Western blot; the expression of hTERT mRNA was measured by RT-PCR.

RESULTSThe purity of APC identified by magnetic resonance imaging was 98.8%. The proliferation of U266 cells was inhibited, and the apoptosis was induced in a time- and/or dose- dependent manner after treatment with APC. APC could upregulate the caspase- 8, 3 protein expression and downregulate the p- ERK, p-AKT protein expression along with the increase of APC dose. APC also could downregulate the hTERT mRNA expression.

CONCLUSIONAngular pyranocoumarin APC could inhibit the proliferation and induce the apoptosis of U266 cells. The probable mechanism might be achieved by upregulating caspase-8, 3 protein expression and downregulating p-ERK, P-AKT protein and the hTERT mRNA expression.

Apiaceae ; chemistry ; Apoptosis ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Down-Regulation ; Flow Cytometry ; Gene Expression Regulation, Leukemic ; Humans ; MAP Kinase Signaling System ; Multiple Myeloma ; Phytochemicals ; pharmacology ; Pyranocoumarins ; pharmacology ; Telomerase ; metabolism