PT - JOURNAL ARTICLE AU - Nathan A Bracey AU - Jaye M Platnich AU - Arthur Lau AU - Hyunjae Chung AU - M Eric Hyndman AU - Justin A MacDonald AU - Justin Chun AU - Paul L Beck AU - Stephen E Girardin AU - Paul MK Gordon AU - Daniel A Muruve TI - Tissue-selective alternate promoters guide NLRP6 expression AID - 10.26508/lsa.202000897 DP - 2021 Mar 01 TA - Life Science Alliance PG - e202000897 VI - 4 IP - 3 4099 - https://www.life-science-alliance.org/content/4/3/e202000897.short 4100 - https://www.life-science-alliance.org/content/4/3/e202000897.full SO - Life Sci. Alliance2021 Mar 01; 4 AB - The pryin domain (PYD) domain is involved in protein interactions that lead to assembly of immune-sensing complexes such as inflammasomes. The repertoire of PYD-containing genes expressed by a cell type arms tissues with responses against a range of stimuli. The transcriptional regulation of the PYD gene family however is incompletely understood. Alternative promoter utilization was identified as a mechanism regulating the tissue distribution of human PYD gene family members, including NLRP6 that is translationally silenced outside of intestinal tissue. Results show that alternative transcriptional promoters mediate NLRP6 silencing in mice and humans, despite no upstream genomic synteny. Human NLRP6 contains an internal alternative promoter within exon 2 of the PYD, resulting in a truncated mRNA in nonintestinal tissue. In mice, a proximal promoter was used that expanded the 5′ leader sequence restricting nuclear export and abolishing translational efficiency. Nlrp6 was dispensable in disease models targeting the kidney, which expresses noncanonical isoforms. Thus, alternative promoter use is a critical mechanism not just for isoform modulation but for determining expression profile and function of PYD family members.