Are there any publicly available databases providing expression data for long non-coding RNAs (lncRNAs) across cell types of multicellular organisms? Alternatively, are there lesser known UCSC tracks for this?
Example 1: I want to compare tissue-specific expression of the human lncRNA Xist across HeLa, GM12878, and HEK293 cell types [or more].
Example 2: I want to compare tissue-specific expression of the plant lncRNA COLDAIR across cortex, phloem, and trichoblast cell types [or more].