Effects Of Rhizoma Alterolia Extract On The Expression Of GLC - 82 In Lung Adenocarcinoma Cell Line At Different Elevations

Background: Lung cancer is one of the most common malignant tumors．Recently，the attact rate of lung cancer rises yearly，and the age of onset is more younger now，the disease threatens seriously the health of people．Rhubarb is a perennial herbaceousplants,which widely are distributed in Asia altitude alpine meadows, thicket marginsdamp cold zone. Rheum tanguticum distributed in gansu, qinghai and qinghaiprovince and the Tibet border area at an altitude of2300-4200m.Rheum tanguticumis the main source of rhubarb medicinal material,Its effective composition is mainlyanthraquinone derivatives. such as rhein, emodin, rheum emodin, aloe-emodin, andmethyl ether etc., There are diarrhoea, antibacterial, anti-inflammatory, antitumor,reducing blood fat, liver, gallbladder and other pharmacological effects. Rheumtanguticum is traditional Chinese medicine.Modern research has found thatanthraquinone compounds have antitumor effect.This experiment studied the effectsof ethanol extract of different altitude of qinghai province Rheum tanguticum onGLC-82cellsObjective:To study the effects of ethanol extract of different altitude of qinghaiprovince Rheum tanguticum on GLC-82cellsMethods: MTT assay was applied to determine the cell proliferation of GLC-82cellsafter treated with different concentrations for different time durations (24,48and72h).The influence of the extract on cell apoptasis was researched with Annexin V－FITC/PI kit and flow cytometry．Results:The FCM analysis showed that lower concentrations of the extract causedcell apoptosis early and there is no significant difference between the two groups.With the increasing of drug concentration,tumor cells appear late apoptosis andnecrosis.Conclusion:The quantity of late apoptosis and necrosis cells of elevation4500meters Rheum tanguticum ethanol extract group is obviously higher than that of the elevation3200meters group.