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Multiomics Research

Pathology image, radiomics, spatial transcriptomics(ST)๋ฅผ ํ†ตํ•ฉํ•˜๊ธฐ ์œ„ํ•œ ์—ฐ๊ตฌ ์›Œํฌ์ŠคํŽ˜์ด์Šค์ž…๋‹ˆ๋‹ค.
Pathology image๋กœ๋ถ€ํ„ฐ ST๋ฅผ ์˜ˆ์ธกํ•˜๋Š” ๊ณผ์ œ์— radiomics๋ฅผ ๊ฒฐํ•ฉํ•˜๋Š” ๋‘ ๊ฐ€์ง€ ํ”„๋ ˆ์ž„์›Œํฌ๋ฅผ ์†Œ๊ฐœํ•ฉ๋‹ˆ๋‹ค.

Radiomics-Pathomics Contrastive Learning for Interpretable ST Prediction

RaPaCL์€ ๋ณ‘๋ฆฌ ์ด๋ฏธ์ง€ ๊ธฐ๋ฐ˜ ST ์˜ˆ์ธก ๋ชจ๋ธ์— ํ•ด์„ ๊ฐ€๋Šฅํ•œ radiomics ํ‘œํ˜„์„ ํ†ตํ•ฉํ•˜๊ธฐ ์œ„ํ•œ ํ”„๋ ˆ์ž„์›Œํฌ์ž…๋‹ˆ๋‹ค. Cell-segmented patch์—์„œ ์ถ”์ถœํ•œ handcrafted radiomics feature์™€ ๋”ฅ๋Ÿฌ๋‹ ๊ธฐ๋ฐ˜ pathomics feature๋ฅผ contrastive learning์œผ๋กœ ๋™์ผํ•œ latent space์— ์ •๋ ฌํ•˜์—ฌ, ๋ชจ๋ธ์ด ์กฐ์ง์˜ textureยทshapeยทmorphology์˜ ํ†ต๊ณ„์  ์ˆ˜์น˜์™€ ๊ฐ™์€ ํ•ด์„ ๊ฐ€๋Šฅํ•œ ํŠน์„ฑ์„ ํ•™์Šตํ•˜๋„๋ก ์œ ๋„ํ•ฉ๋‹ˆ๋‹ค. ์ •๋ ฌ๋œ radiomics-pathomics ํ‘œํ˜„์„ ์œตํ•ฉํ•˜์—ฌ spot-wise gene expression์„ ์˜ˆ์ธกํ•˜๋ฉฐ, ์˜ˆ์ธก ์„ฑ๋Šฅ๊ณผ ํ•ด์„ ๊ฐ€๋Šฅ์„ฑ์„ ๋™์‹œ์— ํ–ฅ์ƒ์‹œํ‚ค๋Š” ๊ฒƒ์„ ๋ชฉํ‘œ๋กœ ํ•ฉ๋‹ˆ๋‹ค.

RaPaCL-figure

Spatially-aware Radiomics Network for ST Prediction

STaRN์€ ๊ฒฝ๋Ÿ‰ radiomics ํ‘œํ˜„์„ ํ™œ์šฉํ•˜์—ฌ ๊ณต๊ฐ„์  ์ด์›ƒ ์ •๋ณด(spatial context) ๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ํ•™์Šตํ•˜๋Š” ํ”„๋ ˆ์ž„์›Œํฌ์ž…๋‹ˆ๋‹ค. ๊ฐ spot๊ณผ ์ฃผ๋ณ€ ์ด์›ƒ spot๋“ค์„ Summary Table ํ˜•ํƒœ๋กœ ๊ตฌ์„ฑํ•œ ๋’ค, SAINT ๊ธฐ๋ฐ˜ dual-attention encoder๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ spot ๋‚ด feature ์ƒํ˜ธ์ž‘์šฉ(column attention)๊ณผ ์ด์›ƒ ๊ฐ„ ๊ด€๊ณ„(row attention)๋ฅผ ๋™์‹œ์— ๋ชจ๋ธ๋งํ•ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ UNI ๋ฐ scFoundation ๊ธฐ๋ฐ˜ teacher representation์œผ๋กœ๋ถ€ํ„ฐ distillation์„ ์ˆ˜ํ–‰ํ•˜๊ณ , self-contrastive learning์„ ๊ฒฐํ•ฉํ•˜์—ฌ ๊ณต๊ฐ„์ ยท์˜๋ฏธ์  ๋งฅ๋ฝ์„ ๋ฐ˜์˜ํ•˜๋Š” radiomics ํ‘œํ˜„์„ ํ•™์Šตํ•ฉ๋‹ˆ๋‹ค. ํ•™์Šต๋œ ํ‘œํ˜„์€ downstream gene expression prediction์— ํ™œ์šฉ๋ฉ๋‹ˆ๋‹ค.

STaRN-figure

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๐Ÿ” ์˜๋ฃŒ ๋ฉ€ํ‹ฐ๋ชจ๋‹ฌ ์—ฐ๊ตฌ ํ”„๋กœ์ ํŠธ. Pathomics ร— Radiomics ร— Spatial Transcriptomics.

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