Disclosed herein include guide RNA (gRNA), such as single gRNA (sgRNA), and compositions thereof, comprising 2′-O-methyldithiomethyl modified sugar moieties which can be reduced to 2′-O-methanethiol groups in the reducing environment of cells and then converted (e.g., spontaneously converted) to 2′-OH. The resultant gRNA can bind to and direct the activity of an RNA-guided endonuclease (e.g., Cas9).

Provided are peptide nucleic acid derivatives targeting a 3′ splice site of the human tyrosinase pre-mRNA. The peptide nucleic acid derivatives potently induce a splice variant of the human tyrosinase mRNA in cells, and are useful to safely treat dermatological indications or conditions involving the human tyrosinase protein upon topical administration.

Provided are peptide nucleic acid derivatives targeting a 3′ splice site of the human tyrosinase pre-mRNA. The peptide nucleic acid derivatives potently induce a splice variant of the human tyrosinase mRNA in cells, and are useful to safely treat dermatological indications or conditions involving the human tyrosinase protein upon topical administration.

The present invention relates to RNAi agents, e.g., dsRNA agents, targeting the angiotensin converting enzyme 2 (ACE2) gene. The invention also relates to methods of using such RNAi agents to inhibit expression of an ACE2 gene and to methods of treating or preventing an ACE2-associated disease, e.g., COVID-19, in a subject.

The present invention relates to RNAi agents, e.g., dsRNA agents, targeting the angiotensin converting enzyme 2 (ACE2) gene. The invention also relates to methods of using such RNAi agents to inhibit expression of an ACE2 gene and to methods of treating or preventing an ACE2-associated disease, e.g., COVID-19, in a subject.

The present invention relates, in general to agents that modulate the pharmacological activity of conjugated siRNAs.

The present invention relates, in general to agents that modulate the pharmacological activity of conjugated siRNAs.

The present invention relates to RNAi agents, e.g., dsRNA agents, targeting the transmembrane serine protein 2 (TMPRSS2) gene. The invention also relates to methods of using such RNAi agents to inhibit expression of a TMPRSS2 gene and to methods of treating or preventing a TMPRSS2-associated disease, e.g., COVID-19, in a subject.

The present invention relates to RNAi agents, e.g., dsRNA agents, targeting the transmembrane serine protein 2 (TMPRSS2) gene. The invention also relates to methods of using such RNAi agents to inhibit expression of a TMPRSS2 gene and to methods of treating or preventing a TMPRSS2-associated disease, e.g., COVID-19, in a subject.

Provided herein are methods, compounds, and compositions for reducing expression of a DMPK mRNA and protein in an animal. Also provided herein are methods, compounds, and compositions for preferentially reducing CUGexp DMPK RNA, reducing myotonia or reducing spliceopathy in an animal. Such methods, compounds, and compositions are useful to treat, prevent, delay, or ameliorate type 1 myotonic dystrophy, or a symptom thereof.