What question did this study set out to answer?

To investigate whether oridonin induces autophagy in human cervical carcinoma HeLa cells and characterize the involved signaling pathways.

Oridonin Induced Autophagy in Human Cervical Carcinoma HeLa Cells Through Ras, JNK, and P38 Regulation

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In vitro study demonstrates oridonin-induced autophagy in HeLa cervical carcinoma cells, highlighting regulation by Ras, JNK, and P38 pathways.

To investigate whether oridonin induces autophagy in human cervical carcinoma HeLa cells and characterize the involved signaling pathways.
Treated HeLa cervical cancer cells in vitro with oridonin across varying concentrations and time intervals.
Quantified autophagy levels and autophagosome formation using monodansylcadaverine (MDC) fluorescence and measured MAP-LC3 and Beclin 1 protein expression.
Co-treated cells with the autophagy inhibitor 3-methyladenine (3-MA) or specific inhibitors targeting Ras, P38, and JNK MAPKs to identify regulatory pathways.
Oridonin induced autophagy in HeLa cells in a dose- and time-dependent manner, significantly increasing MDC-positive fluorescent particles alongside upregulation of MAP-LC3 and Beclin 1.
Autophagy inhibition via 3-MA dose-dependently reduced the autophagic ratio and downregulated MAP-LC3 and Beclin 1 expression.
Pharmacological inhibition of Ras increased autophagic levels, whereas P38 and JNK inhibitors significantly decreased autophagy; Raf-1 and ERK1/2 showed no evident association.

Cui et al. (2007) studied this question.

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In vitro study demonstrates oridonin-induced autophagy in HeLa cervical carcinoma cells, highlighting regulation by Ras, JNK, and P38 pathways.