microRNAs play critical roles in the survival and recovery of Caenorhabditis elegans from starvation-induced L1 diapause

We further examined worms recovering from 4 d of L1 starvation and found that around 90% of the mir-71(lf) mutants displayed retarded vulval precursor cell (VPC) division, compared with less than 5% in wild type (Fig. 4A). We found that the 3′UTRs of several genes of the InsR pathway, including unc-31, age-1, pdk-1, akt-2, and sgk-1, contain predicted miR-71 targeting sites (as predicted by TargetScan and mirWIP). (H and I) Fluorescence images (H) and statistical data (I) showing that the M cell diveded in fed animals but remained undivided in 4-, 7-, or 11-d–starved L1 wild-type and mir-71(lf) worms. (E) Fluorescence and DIC images showing that the unc-31 3′UTR reporter was repressed in mir-71(+)worms (2/2 transgenic lines) but not in mir-71(lf) worms (4/4 transgenic lines). We found that the poor survival rate of daf-16(mu86)(lf) was further decreased by mir-71(lf) (Fig. 2C), consistent with the notion that a portion of miR-71 activities regulate genes that act in parallel to UNC-31–mediated InsR/PI3K signaling for long-term survival during L1 diapause. Mutating miR-71 drastically reduces the survival rate of animals in L1 diapause, and the effect can be suppressed by mutations of insulin receptor pathway genes age-1 and unc-31.

The Recovery and Resilience Facility in your country

If you created a Google Drive backup using the old Duo Restore toggle and know the recovery password you set when enabling Duo Mobile backup, you can still access this backup to perform an Instant Restore. If you have Google account backup disabled or your device does not have a PIN, pattern, or password screen lock, please see Enabling Duo Restore for the legacy Instant Restore flow. You’ll still need to perform the Instant Restore steps before you can use those accounts to log in to Duo-protected services with Duo Push or Duo Mobile passcodes. Note that this doesn’t reconnect your Duo-protected accounts.